JP6470953B2 - Loading platform lifting device - Google Patents

Description

  The present invention relates to a hydraulically driven load receiving table lifting device provided in a cargo handling vehicle.

  The following Patent Document 1 has been proposed as this type of load receiving table lifting device. The load receiving table lifting device of Patent Document 1 is a device in which a power unit that operates a hydraulic cylinder is housed in a mounting member provided on a vehicle body frame so as to be freely inserted and removed.

  The hydraulic piping connected to the power unit and disposed in the mounting member is fixed to the vehicle body frame side in order to be connected to the hydraulic cylinder. On the other hand, since the power unit moves relative to the mounting member as the power unit is put in and out, it is necessary to arrange hydraulic piping so as to allow the movement.

Japanese Utility Model Publication No. 1-173032

  As the power unit is inserted and removed, it is necessary to prevent the hydraulic piping from being hindered in function due to, for example, tangling or stretching in the mounting member. However, this point was not particularly considered in the device according to Patent Document 1.

  Therefore, an object of the present invention is to provide a cargo receiving platform lifting / lowering device that suppresses functional problems that occur when a power unit is inserted and removed.

The present invention is a vehicle-side structural member provided with a load receiving platform, and a cross member extending in the vehicle width direction, a part of which is housed in the cross member, and can be pulled out along the longitudinal direction of the cross member. A power unit which is a hydraulic drive source for raising and lowering the load receiving table, and a power unit external hydraulic pipe and a power unit external electrical wiring which are located in the cross member and connected to the power unit, the power unit comprising: The cross member can be pulled out from one end side in the longitudinal direction, and at least the power unit external hydraulic pipe is connected to the power unit when the power unit is housed in the cross member and when pulled out from the cross member . The cross member extends from the connecting portion to the other end side in the longitudinal direction of the cross member. The direction is reversed on the other end side in the longitudinal direction of the cross member and extends to one end side in the longitudinal direction of the cross member, and then extends through the cross member to the outside of the cross member. And a cross member side fixing portion for fixing the power unit external hydraulic pipe to the cross member , and the power unit side connecting portion and the cross member side fixing portion of the power unit external hydraulic pipe or the power unit external electric wiring. Is a load receiving platform elevating device longer than a linear distance connecting the connecting portion on the power unit side and the cross member side fixing portion when the power unit is pulled out from the cross member .

In the above configuration, the cross member includes a cross member side fixing portion that fixes the hydraulic piping outside the power unit to the cross member at the penetrating portion. For this reason, when the power unit is put in and taken out, the power unit external hydraulic pipe can be followed with the cross member side fixed portion as a base point. And since a tensile force is not applied with respect to hydraulic piping outside a power unit or electric wiring outside a power unit at the time of putting in and out of a power unit, damage can be controlled. Also, when the power unit is housed, it bends according to the approximately U-shaped slack in which the hydraulic piping outside the power unit or the electrical wiring outside the power unit remains. Yes.

  Further, in addition to the cross member side fixing portion, the power unit includes a power unit side fixing portion for fixing the power unit external hydraulic pipe to a back side portion which is an end portion on the other end side in the cross member longitudinal direction. it can.

  In the above configuration, since the power unit includes the power unit side fixing portion at the back side portion of the power unit, the power unit external hydraulic pipe freely moves in the cross member at the other end side of the cross member from the back side portion, so that it does not catch on the power unit. Therefore, the power unit external hydraulic piping can be more reliably followed when the power unit is put in and out. In addition, when the power unit is inserted into and removed from the cross member, the power unit external hydraulic pipe can be made to follow the power unit with the cross member side fixing portion and the power unit side fixing portion as a base point. For this reason, it can be suppressed that the power unit external hydraulic pipes become entangled in the cross member, thereby obstructing the insertion and removal of the power unit.

  In addition, the cross member side fixing portion is located in the cross member, and in the state where the power unit is housed in the cross member, it is a back surface that is an end surface on the other end side in the cross member longitudinal direction of the power unit. The structure located in the other end side of a cross member further than a side end surface is employable. For this reason, it is possible to suppress damage caused by the cross member-side fixing portion interfering with the power unit.

  The cross member includes an opening through which the power unit external hydraulic pipe passes, and a lid member attached to the opening, and the lid member passes when the power unit external hydraulic pipe passes through the opening. A structure having a lead-out port and capable of closing the opening of the opening except for the lead-out port can be employed.

  In the above configuration, the lid member can close the opening of the opening except for the outlet. For this reason, piping work is easy. Moreover, since the opening is closed by the lid member except for the outlet, foreign matter does not enter the cross member.

  The electrical wiring outside the power unit extends from the connection point to the power unit to the other end side in the longitudinal direction of the cross member, and the direction is reversed at the other end side in the longitudinal direction of the cross member. It extends to one end side in the longitudinal direction of the member and then extends through the cross member to the outside of the cross member. The lid member includes the cross member side fixing portion, and the cross member side fixing portion is inside the cross member. It is possible to employ a configuration in which a connector for connecting the electric wiring outside the power unit located on the inner surface side when the lid member is attached to the cross member can be employed.

  In the above configuration, since the connector is provided on the inner surface side when the lid member is attached to the cross member, it is easy to connect the electric wiring outside the cross member to the electric wiring outside the power unit by removing the lid member.

  Further, the power unit may include a power unit side hydraulic pipe connection part or an electric terminal, and the power unit side hydraulic pipe connection part or the electric terminal may be positioned on the other end side in the longitudinal direction of the cross member in the power unit. For this reason, the length of the hydraulic piping outside the power unit or the electric wiring outside the power unit between the power unit and the cross member opening can be shortened.

  Further, the power unit side hydraulic pipe connecting portion is located on the back side portion which is the end portion on the other end side in the cross member longitudinal direction in the power unit, and the end portion is on the other end side in the cross member longitudinal direction. It is possible to employ a configuration that opens while extending toward the front. For this reason, in the above configuration, since the hydraulic pipe can be extended from the power unit side hydraulic pipe connection part to the other end side in the longitudinal direction of the cross member, it is possible to suppress the hydraulic pipe from being bent excessively. Inconveniences such as breakage, rupture of hydraulic piping due to increased hydraulic pressure, and occurrence of oil leakage can be suppressed.

  In addition, the cross member side fixing portion includes a cross member side hydraulic pipe connecting portion, and the cross member side hydraulic pipe connecting portion is opened while an end portion extends toward the other end side in the cross member longitudinal direction. Configuration can be adopted. For this reason, when the power unit is pulled out, a substantially U-shaped slack is left in the hydraulic piping outside the power unit or the electric wiring outside the power unit. When the power unit is housed, the piping / wiring is bent according to the “U-shape”, so that the power unit can be housed smoothly compared to when the hydraulic piping outside the power unit or the electric wiring outside the power unit is bent from a straight state.

  In the present invention, when the power unit is put in and taken out, the power unit external hydraulic pipe can be followed with the cross member side fixed portion as a base point. For this reason, it is possible to provide a load receiving table lifting device that suppresses functional problems with the insertion and removal of the power unit.

1 is an overall view of a cargo bed lifting device in an embodiment of the present invention. It is a whole rear view of the power unit. It is the figure which looked at the valve block from the drawer side end face. FIG. 3 is a rear view in which a part of FIG. 2 is enlarged. It is a top view of the power unit, (a) is an overall plan view of a state where the power unit is housed in a cross member, (b) is a plan view of a state where a part of the power unit is pulled out. It is YY sectional drawing in FIG. 2 of the oil tank. It is the figure which looked at the same power unit from the gate type cover side. (A) is the perspective view which showed schematically the relationship between the cross member and a power unit, (b) is the figure which shows the outline of the electrical wiring inside and outside the cross member. (A) is a perspective view on the plane side showing the cross member, power unit, and hydraulic piping, and (b) is a perspective view on the front side of the vehicle showing the cross member, power unit, and hydraulic piping. It is a perspective view by the side of the side which shows arrangement | positioning of the hydraulic piping in the cross member. (A) is the schematic of the cross-sectional view which shows the state by which the power unit is not pulled out with respect to the cross member, (b) is the cross-sectional view which shows the state where the power unit was pulled out with respect to the cross member FIG. It is a schematic exploded perspective view which shows the structure of the opening part vicinity of the cross member. It is a disassembled perspective view which shows the box part in other embodiment of this invention. The box part of the state attached to the cross member main body in other embodiment of this invention is shown, (a) is a front view of the state seen from the vehicle front (piping and wiring are abbreviate | omitting illustration), (b) is (a) It is an AA arrow sectional view of).

  Hereinafter, a power unit according to an embodiment of the present invention will be described. This power unit drives an actuator of a load receiving table lifting device mounted on a truck. In other words, the power unit is a hydraulic drive source for operating the cargo cradle provided in the truck. Prior to the description of the power unit, a schematic configuration of the truck and the receiving platform lifting device will be described.

  Referring to FIG. 1, a cargo box 1 having a cargo bed 3 on a vehicle body 2 is mounted on a truck 1. At the rear portion of the vehicle body 2, a load receiving platform lifting / lowering device 5 for loading and unloading loads on the loading platform 3 is disposed via an attachment frame 6 attached to the rear portion of the vehicle body 2. The load receiving table lifting device 5 includes a pair of left and right lifting frames 7 and a rectangular plate-shaped load receiving table 8. The load receiving table lifting device 5 further includes a pair of left and right parallel links 9. The parallel link 9 has a maximum ascending position (indicated by a one-dot chain line in FIG. 1) where the load receiving platform 8 is substantially at the same height as the upper surface of the load receiving platform 3 while the pair of left and right lifting frames 7 are kept in a fixed posture. It is possible to move up and down between the lowest position 8 (shown by a two-dot chain line in FIG. 1) in which 8 is grounded. A hollow reinforcing support member 10 for reinforcing the load receiving table 8 is fixed to the rear surface of the load receiving table 8 in a pair of left and right.

  The load receiving table lifting device 5 includes a lifting cylinder (lift cylinder) 11. The lifting cylinder 11 is an actuator for driving the lifting frame 7 to move up and down. The lifting cylinder 11 is arranged between each parallel link 9 and the mounting frame 6. A base frame 12 of a load receiving platform 8 is pivotally supported on each of the left and right lifting frames 7, and the load receiving platform 8 is placed at a standing storage position (shown by a solid line in FIG. 1) and substantially the same height as the upper surface of the loading platform 3. It can be rotated between a horizontal overhanging position (shown by a one-dot chain line in FIG. 1).

  The load receiving table lifting device 5 includes a hoisting cylinder (tilt cylinder) 13. The hoisting cylinder 13 is an actuator for hoisting the load receiving table 8. The hoisting cylinder 13 is disposed between a support bracket (not shown) fixed to the back surface of the load receiving platform 8 and the elevating frame 7. By extending the hoisting cylinder 13, the load receiving base 8 can be raised.

  The load receiving table lifting device 5 includes a cross member 14. The cross member 14 extends in the vehicle width direction, which is a direction orthogonal to the vehicle front-rear direction, as a longitudinal direction, and is disposed on the rear lower surface of the vehicle body 2. The cross member 14 includes a bottom wall 14A, a top wall 14B, and side walls 14C and 14D, and is formed in a hollow cross-sectional rectangular shape whose one end in the longitudinal direction is closed. A middle portion in the longitudinal direction of the top wall 14B of the cross member 14 is fixed (for example, welded) to the lower surface of the rear portion of the vehicle body 2. The other end in the longitudinal direction of the cross member 14 is an open insertion port 14E. Each mounting frame 6 is formed with an insertion opening 6a. The portions near the ends of the cross member 14 in the longitudinal direction are inserted into the insertion openings 6a. The portions near the ends of the cross member 14 in the longitudinal direction are inserted into the insertion openings 6a. The cross member 14 and each attachment frame 6 are fixed (for example, welded) in the inserted state.

  As shown in FIG. 2, the power unit 15 includes a power unit main body 16, a base 17 to which the power unit main body 16 is attached, a valve block 23, an oil tank 24, and a pump 25 that are a part of the configuration of the power unit main body 16. A holding member 18 to be held, a portal cover 19 that prevents interference between the cross member 14 and the power unit main body 16, a vibration isolating rubber 20 that protects the power unit main body 16 from vibration (see FIG. 3), an electrical wiring 21, and hydraulic pressure And a pipe 22.

  The power unit main body 16 can be pulled out in the longitudinal direction of the cross member 14 by a predetermined amount (as will be described later, the amount pulled out until the restriction bolt B4 contacts the holding bolt B1). Can be stored in the cross member 14. The power unit main body 16 includes the valve block 23, the oil tank 24, the pump 25, the electric motor 26, and the controller 27 in a row.

  In a state where the power unit main body 16 is housed in the cross member 14, the valve block 23, the oil tank 24, the pump 25, the electric motor 26, and the controller 27 are in this order in the insertion port 14 </ b> E side that is the drawing side end of the cross member 14. It arrange | positions on one line (straight line) so that it may follow a longitudinal direction toward an insertion side end. The pull-out side is the front side (left side in FIG. 2) C1 of the cross member 14 from which the power unit main body 16 is pulled out from the cross member 14, and the insertion side is the power unit main body 16 in the cross member 14 inserted into the cross member 14. The back side (the right side in FIG. 2) is defined as C2.

  The valve block 23 is a part that relays the flow of hydraulic oil between the oil tank 24 and the lifting cylinder 11 and the undulation cylinder 13 that are actuators. The valve block 23 includes a rectangular parallelepiped block main body portion 28 and a cylindrical block-side lid portion 29. The block main body 28 includes a needle valve for opening and closing the platform, a flow control valve for adjusting the descending speed of the load receiving platform 8, and a relief valve for adjusting the discharge pressure of the hydraulic oil. As shown in FIGS. 3 and 4, the block main body portion 28 has a drawing-side end surface (longitudinal end surface) 30 as one surface thereof, a needle valve adjusting portion 31 (two for opening and closing) as an adjusting portion, and a flow control valve. An adjustment unit 32, a relief valve adjustment unit 33, a solenoid SOLA for a descending solenoid valve, a solenoid SOLB for a undulation switching solenoid valve, and a pressure sensor 34 are provided. The solenoid SOLA and the solenoid SOLB are of a cartridge type (for example, constructed by assembling a spring, a spool, an O-ring, etc.), and are replaced when a failure occurs.

  As shown in FIG. 4, the block-side lid portion 29 is a part of the valve block 23, and thus is provided integrally with the block main body portion 28. The block-side lid portion 29 is fitted (internally fitted) to a valve-side small cross-sectional portion 35 of the oil tank 24, which will be described later, and also functions as a valve block 23 and a lid for the valve-side small cross-sectional portion 35. ing. The seal ring 36 is fitted on the outer peripheral surface of the block-side lid 29, and the sealing performance when the block-side lid 29 is fitted to the valve-side small cross-section 35 is ensured.

  A pipe connection portion is arranged on the other surface of the valve block 23, that is, the insertion side end surface 38 facing the oil tank 24 in the longitudinal direction and facing the one surface. The insertion side end surface 38 also includes the end surface of the block side lid portion 29. The insertion side end face 38 of the block main body 28 is in contact with the valve side small cross section 35.

  As shown in FIG. 5 (a), the pipe connecting portion is connected to the inlet piping 39 for connecting the inlet piping 39 for introducing the hydraulic oil from the pump 25 to the valve block 23, and from the valve block 23 to each actuator side. Derived pipe connecting portions 43 and 44 for connecting the derived pipes 41 and 42 for leading the hydraulic oil are provided.

  In this case, the introduction pipe 39 is an inner pipe inserted through the oil tank, and one end side and the other end side thereof are connected to the pump 25 and the valve block 23, respectively. The introduction pipe connecting portion 40 is an introduction side screw hole provided on the insertion side end face 38 of the valve block 23, and one end side of the introduction pipe 39 is connected to the introduction side screw hole 45 provided on the pump 25 side via an adapter 45a. The other end is connected to an introduction-side screw hole 40 provided on the end surface of the block-side lid 29 via an adapter 39a.

  The lead-out piping connection parts 43 and 44 are arranged at positions corresponding to the upper part of the insertion-side end face 38 that is removed from the oil tank 24 (above the valve-side small cross-sectional part 35 of the oil tank 24 described later). This is a lead-out side screw hole provided in the block 23. More specifically, the outlet pipe connecting portions 43 and 44 are disposed in the vicinity of the upper corner portion of the insertion side end surface 38 and in the vicinity of both ends in the width direction. One end side of the outlet pipe 41 is connected to one outlet side screw hole 43 provided on the insertion side end face 38 via an adapter 43a, and one end side of the outlet pipe 42 is the other outlet side provided on the insertion side end face 38. The screw hole 44 is connected via an adapter 44a.

  As shown in FIG. 3, groove-like recesses extending in the longitudinal direction are formed on both side surfaces in the width direction of the valve block 23. Specifically, the groove-shaped concave portion includes an upper concave portion 46 formed at a substantially central portion in the height direction on both side surfaces in the width direction, and a lower concave portion 47 formed below the upper concave portion 46. The height of the upper concave portion 46 is set higher than that of the lower concave portion 47. The lower recessed portion 47 is formed below the upper recessed portion 46 so as to be continuous with the upper recessed portion 46 and set to be deeper than the upper recessed portion 46. In other words, the upper concave portion 46 and the lower concave portion 47 are formed so as to be continuous vertically through the stepped surface 48 in the middle in the vertical direction.

  The oil tank 24 stores hydraulic oil supplied to the lifting and lowering cylinders 11 and 13. As shown in FIG. 2, the oil tank 24 includes a large cross section 49, the valve side small cross section 35, and a pump side small cross section 50. The large cross section 49, the valve side small cross section 35, and the pump side small cross section 50 are integrally formed of synthetic resin. The large cross section 49 is disposed in the middle in the longitudinal direction and is formed in the same cross sectional shape in the longitudinal direction. As shown in FIGS. 3 and 6, chamfers 51, 52, 53, and 54 are applied to the four corners of the large cross-section portion 49, so that the cross-sectional shape of the large cross-section portion 49 is formed in an octagonal cylindrical shape. ing. An oil supply port 55 (see FIG. 2), which is an oil pouring spout, is provided on the upper surface 49a of the large cross section 49, and the oil supply port 55 is closed by a cap 55a. A breather is provided.

  Outlet pipes 41 and 42 are arranged in the longitudinal direction of the cross member 14 along the upper chamfers 51 and 52 among the chamfers 51, 52, 53 and 54, respectively. Connected to the cylinder 13 side.

  The valve-side small cross-section portion 35 and the pump-side small cross-section portion 50 are formed to have a smaller cross section than the large cross-section portion 49 by being narrowed compared to the large cross-section portion 49. The valve side small cross section 35 is disposed on the valve block side with respect to the large cross section 49. The pump-side small cross section 50 is arranged on the pump side with respect to the large cross section 49.

  The cross-sectional shapes of the valve-side small cross-sectional portion 35 and the pump-side small cross-sectional portion 50 are substantially cylindrical. The cylinder centers of the valve-side small cross-section portion 35 and the pump-side small cross-section portion 50 are displaced in the vertical direction, for example. Since the cylinder centers of the valve-side small cross-section portion 35 and the pump-side small cross-section portion 50 are displaced in the vertical direction, the rotation of the oil tank 24 is suppressed against the force in the direction in which the oil tank 24 is rotated. The

  As shown in FIG. 6, groove-shaped concave portions 56 are formed on both side surfaces in the width direction of the large cross-section portion 49 over the longitudinal direction. The groove-shaped recess 56 is formed to be concave toward the center in the width direction (inward in the radial direction) of the oil tank 24. The groove-shaped concave portion 56 is formed by the upper wall portion 57, the lower wall portion 58, and the back wall portion 59, and has the same cross section in the longitudinal direction. The groove-shaped recess 56 is not formed in the valve-side small cross-sectional portion 35 and the pump-side small cross-sectional portion 50. The groove-like recess 56 is located at a position corresponding to the positions of the upper recess 46 and the lower recess 47 of the valve block 23, and the depth position of the inner surface 59 a of the inner wall 59 is higher than that of the upper recess 46 of the valve block 23. It is set deeper than the back surface 47 a of the deep lower recess 47. Thus, a groove-shaped concave portion of the valve block 23, which will be described later, the oil tank 24, and the holding member 18 attached to the pump 25 in the longitudinal direction are prevented from interfering with the oil tank 24.

  The valve-side small cross-sectional portion 35 and the pump-side small cross-sectional portion 50 of the oil tank 24 have a substantially cylindrical shape and are open. Therefore, the valve-side small cross-sectional portion 35 is covered by the one side end member, and the pump-side small cross-sectional portion 50 is covered by the other side end member. One side member corresponds to the valve block 23. The member that covers the valve side small cross-sectional portion 35 is the block side lid portion 29 as described above. The other side member corresponds to the pump 25, which will be described later.

  The pump 25 sucks the hydraulic oil in the oil tank 24 and discharges the hydraulic oil to the introduction pipe 39 (valve block 23 side). As shown in FIG. 2, a gear pump is used for the pump 25. The pump 25 includes a rectangular parallelepiped pump body 60 and a cylindrical pump-side lid 61. The pump-side lid 61 is fitted (internally fitted) to the pump-side small cross-sectional portion 50 of the oil tank 24, and has a function of covering the pump-side small cross-sectional portion 50 together with the function of the pump 25. The seal ring 37 is fitted on the outer peripheral surface of the pump-side lid 61, and the sealing performance when the pump-side lid 61 is fitted to the pump-side small cross section 50 of the oil tank 24 is ensured. The drawing-side end surface 60 a of the pump main body 60 is in contact with the pump-side small cross-sectional portion 50.

  Although not shown, a plate-shaped resin pad is attached to the upper surface of the pump body 60. With this resin pad, the distance between the inner surface of the cross member 14 and the power unit 15 can be reduced. For this reason, it is possible to prevent the power unit 15 from being damaged or causing abnormal noise in the cross member 14 due to the power unit 15 moving up and down in the cross member 14 due to vibration during traveling of the lorry 1. In order to suppress the vertical movement of the power unit 15, for example, the base 17 can be sandwiched with metal fittings provided in the cross member 14. Various other means can be employed.

  On both side surfaces of the pump 25 in the width direction, groove-shaped recesses extending in the longitudinal direction are formed. The groove-shaped recess is located at a position corresponding to the position of the lower recess 47 of the valve block 23, and the inner surface of the groove-shaped recess is set to be flush with the inner surface 47a of the lower recess 47 of the valve block 23. ing.

  In the groove-like recess of the valve block 23, the lower recess 47 is set to be deeper than the upper recess 46, and the inner surface of the groove-like recess of the pump 25 and the inner surface 47a of the lower recess 47 are flush with each other. The reason why the depths of the upper concave portion 46 and the lower concave portion 47 are changed in this way is to prevent the groove-shaped concave portion from interfering with the connecting portion of the electric motor 26 in the pump 25.

  The oil tank 24 is in a floating state with respect to the base 17, and as described above, the block-side lid portion 29 is fitted to the valve-side small cross-sectional portion 35, and the pump-side lid portion 61 is fitted to the oil tank 24. The oil tank 24 is temporarily held by the valve block 23 and the pump 25 by fitting to the pump side small cross section 50.

  The electric motor 26 is for driving the pump 25 and is disposed adjacent to the insertion side of the pump 25. The controller 27 controls the valve drive unit of the valve block 23 and the drive unit of the electric motor 26 and is disposed adjacent to the insertion side of the electric motor 26.

  A portal cover 19 is disposed near the insertion side of the controller 27. As shown in FIGS. 2 and 7, the portal cover 19 includes a pair of side wall parts 63 fixed to a side guard 62 of the base 17, which will be described later, and a top wall that connects both side wall parts 63 in the width direction at the upper end parts thereof. A wall 64. The side wall portion 63 extends in the vertical direction from the inner surface of the side guard 62 and is bent toward the center in the width direction at the upper portion thereof. The top wall portion 64 is arranged along the width direction. The height position of the top wall 64 is set higher than other members constituting the power unit main body 16. With such a structure of the portal cover 19, when the power unit 15 is pulled out in the longitudinal direction of the cross member 14, the power unit 15 can be prevented from interfering with the inner wall surface of the cross member 14, and the power unit 15 can be protected.

  As shown in FIGS. 3 and 6, the holding member 18 includes a hook-like portion 65, a cover portion 66, and a holding bolt B <b> 1. The holding members 18 are provided as a pair at least two apart from each other in the outer circumferential direction of the oil tank 24. In this case, the holding member 18 is arranged separately on one side and the other side with respect to a vertical plane P which is a predetermined reference plane including the longitudinal direction of the valve block 23, the oil tank 24, and the pump 25. Both the block 23 (one side end member) and the pump 25 (the other side end member) are configured to be held on one side and the other side of the reference surface.

  The bowl-shaped portion 65 seals the valve side small cross-sectional portion 35 which is one side opening in the longitudinal direction of the oil tank 24 with the valve block 23, and the pump 25 small cross section which is the other side opening in the longitudinal direction with the pump 25. In a state in which the portion 50 is sealed, it has a length corresponding to at least the lengths of the valve block 23, the oil tank 24, and the pump 25 in the longitudinal direction. Specifically, the bowl-shaped portion 65 is formed to have a length substantially equal to the length in the longitudinal direction of the valve block 23, the oil tank 24, and the pump 25, and the groove-shaped concave portion of the valve block 23 and the oil tank 24. It is installed over.

  The hook-shaped portion 65 is a U-shaped portion having a U-shaped cross section orthogonal to the longitudinal direction. The U-shaped part is formed to be convex toward the center in the width direction. The U-shaped portion will be described with respect to the portion corresponding to the oil tank 24. As shown in FIG. 6, the U-shaped portion includes the upper wall portion 57, the rear wall portion 59, and the lower wall portion 57 of the groove-shaped recess 56 of the oil tank 24. A top wall side holding wall portion 67, a back wall side holding wall portion 68, and a bottom wall side holding wall portion 69 that respectively face the wall portion 58 are provided. The hook-like portion 65 will be described with respect to the portion corresponding to the valve block 23. The hook-like portion 65 is integrally provided with a side surface holding wall portion 70 that faces the side surface in the width direction of the valve block 23 at a position removed from the groove-like recess. Is provided. The side surface holding wall portion 70 is integrally formed so as to extend upward from the upper end of the U-shaped top wall side holding wall portion 67.

  The cover portion 66 is a portion that covers the electrical wiring 21 for supplying power for driving the power unit 15. The cover part 66 is formed integrally with the bottom wall side holding wall part 69 of the bowl-shaped part 65. The cover part 66 is formed at the open end of the U-shaped part. Specifically, the cover portion 66 is flush with the side surface holding wall portion 70 and covers the electric wiring 21 on the outer side in the width direction, and the groove-shaped recess 56 from the lower end of the outer covering wall portion 71. And a lower covering wall portion 72 that is bent so as to face the lower wall portion 58 and covers the electric wiring 21 on the lower side thereof.

  As shown in FIG. 2, the electrical wiring 21 connects the controller 21 and the electric motor 26, the wiring 21 </ b> B connecting the controller 27 and the valve block 23, and the controller 27 and the pressure sensor 34. Wiring 21C is provided. Among these, the wiring 21B and the wiring 21C are inserted into the groove-like recesses formed in the valve block 23, the oil tank 24, and the pump 25 in the middle of the wiring (see FIG. 6).

  The valve block 23 is provided with solenoids arranged in the middle of the hydraulic circuit connecting the oil tank 24 and the raising / lowering cylinder 11 and the oil tank 24 and the raising / lowering cylinder 13. Further, an emergency switch SW that is operated in an emergency (for example, an unexpected stop of the elevating cylinder 11) is disposed at a position away from the valve block 23. The wiring 21B includes a wiring having one end connected to the controller 27 and the other end connected to each solenoid, and a wiring having one end connected to the controller 27 and the other end connected to an emergency switch. The pressure sensor 34 is provided so as to protrude from the valve block 23 toward the drawing side, and one end of the wiring 21 </ b> C is connected to the controller 27 and the other end is connected to the pressure sensor 34.

  As described above, of the electrical wiring 21, the wiring 21 </ b> B and the wiring 21 </ b> C are inserted into the groove-shaped recesses in the middle of the wiring, and between the cover portion 66 and the outer surface along the longitudinal direction of the pump main body portion 60, the cover portion 66. And the outer surface along the longitudinal direction of the oil tank 24, and the cover portion 66 and the outer surface along the longitudinal direction of the block main body portion 28 are covered with the cover portion 66. The wiring 21B and the wiring 21C are accommodated in the groove-shaped recess in a state substantially parallel to the flange 65 (U-shaped portion).

  As shown in FIG. 3, the holding bolt B <b> 1 is disposed near the drawing side end and the insertion side end when the valve block 23, the oil tank 24, and the pump 25 are combined. That is, the holding bolt B1 extends in the width direction from the rear wall side holding wall portion 68 to the block main body portion 28 at a position corresponding to the block main body portion 28 of the valve block 23 of the rear wall side holding wall portion 68 of the bowl-shaped portion 65. Are screwed together. In other words, the holding bolt B <b> 1 is arranged so as to be opposed in a straight line from both sides of the holding bolt B <b> 1 through the vertical plane P, and goes toward the center of the valve block 23 and the pump 25, respectively. Further, the holding bolt B1 extends in the width direction from the rear wall side holding wall portion 68 to the pump main body portion 60 at a position corresponding to the pump main body portion 60 of the pump 25 in the rear wall side holding wall portion 68 of the bowl-shaped portion 65. It is screwed. Such holding bolts B <b> 1 are provided for the hook-like portions 65 on both sides, and are provided as a pair spaced apart in the longitudinal direction of the block main body 28 and the pump main body 60. Note that the holding bolt B <b> 1 does not penetrate the oil tank 24.

  Thus, the holding bolt B1 corresponds to the block main body portion 28 of the valve block 23 of the rear wall side holding wall portion 68 of the bowl-shaped portion 65 in a state where the valve block 23, the oil tank 24, and the pump 25 are combined. At the position corresponding to the pump main body 60 of the pump 25, the rear wall side holding wall 68 is screwed into the block main body 28 in the width direction. The rear wall side holding wall portion 68 is screwed into the pump main body portion 60 in the width direction. As a result, the oil tank 24 is securely held by the valve block 23 and the pump 25, and the oil tank 24, the valve block 23, and the pump 25 are held evenly.

  As shown in FIG. 3, the power unit main body 16 is fixed to the base 17 and can be handled collectively. That is, the power unit main body 16 can be pulled out and inserted (stored) in the longitudinal direction with respect to the cross member 14 together with the base 17. The longitudinal direction of the base 17 coincides with the longitudinal direction of the cross member 14.

  The base 17 includes a base main body 73, a vibration-proof rubber mounting portion 74, and the side guard 62. The base main body 73 is formed as a flat plate that follows the wall surface of the bottom wall 14A of the cross member 14, and is set to a length sufficient to mount the power unit main body 16.

  The anti-vibration rubber mounting portion 74 includes a one-side mounting plate portion 75 extended so as to incline upward from one end (front end) in the width direction of the base body portion 73 and the other end in the width direction of the base body portion 73 ( And the other-side mounting plate portion 76 that is extended so as to incline upward from the rear end). The side guards 62 extend upward from the one side mounting plate portion 75 and the other side mounting plate portion 76, respectively, and are formed in a plate shape set to the same length as the base main body portion 73. The one side attachment portion 75, the other side attachment portion 76, and the side guard 62 are formed by bending the end of the base body portion.

  The anti-vibration rubber 20 is formed in a substantially rectangular parallelepiped shape, and is placed on the upper surfaces of the one side mounting plate portion 75 and the other side mounting plate portion 76 via mounting members 77 that are respectively mounted along the inclination thereof. Yes. The mounting member 77 has a predetermined length in the longitudinal direction, and the anti-vibration rubber 20 is formed in a length corresponding to the longitudinal direction of the mounting member 77. In particular, the mounting member 77 is disposed in a position corresponding to the valve block 23, the pump 25, and the electric motor 26 in the power unit main body 16. The anti-vibration rubber 20 is placed at the center in the longitudinal direction of each placement member 77.

  The anti-vibration rubber 20 is fixed to the mounting member 77 from the outside of the mounting member 77 by an inner fixing bolt B2 inserted and screwed in a direction orthogonal to the inclination direction of the mounting member 77. The front end side of the inner fixing bolt B2 is screwed into the outer periphery of the valve block 23, the pump 25, and the electric motor 26. With this configuration, the valve block 23, the pump 25, and the electric motor 26 are mounted on the mounting member. 77 and the anti-vibration rubber 20 are integrated.

  The power unit main body 16 is fixed to the base 17 via a vibration isolating rubber 20 and a mounting member 77. In particular, in the power unit main body 16, regions corresponding to the valve block 23, the pump 25, and the electric motor 26 are fixed to the base 17 via the vibration isolating rubber 20 and the mounting member 77, so that the power unit main body 16 is 17 is fixed.

  Specifically, in the region of the one side mounting plate portion 75 and the other side mounting plate portion 76 where the mounting member 77 is disposed, the outer side fixing bolt B3 is connected to the one side mounting plate portion 75 and the other side mounting plate portion 76. The mounting member 77 is fixed to the base 17 by being inserted and screwed into the mounting member 77 in a direction orthogonal to the inclination direction from the outside. The outer fixing bolt B3 is arranged on both sides in the longitudinal direction with respect to the inner fixing bolt B2 in order to avoid the inner fixing bolt B2. With such a configuration, the power unit main body 16 is securely fixed to the base 17.

  Referring to FIG. 6, one side wall of the cross member 14, in this case, the side wall 14 </ b> C on the front side of the vehicle, is brought into contact with the holding bolt B <b> 1, thereby restricting the amount of the power unit 15 pulled out from the cross member 14. The restriction bolt B4 is inserted. In this case, the holding bolt B <b> 1 is a bolt screwed into the pump main body 60 of the pump 25. The amount by which the power unit 15 is pulled out from the cross member 14, that is, the longitudinal position of the regulating bolt B4 is set so that at least the breather 55 of the oil tank 24 is exposed. That is, all the valve blocks 23 are exposed (see FIG. 5B).

  2, 5, and 7, reference numeral 78 denotes a lid. The lid 78 is a member that opens and closes the insertion port 14E of the cross member 14. The lid 78 is fixed to the end of the base 17 in the longitudinal direction. With the power unit main body 16 accommodated in the cross member 14, the insertion port 14E of the cross member 14 is closed, and the power unit main body 16 is pulled out from the cross member 14. In this state, the cross member 14 is separated from the insertion port 14E (the insertion port 14E is opened).

  In the power unit 15 configured as described above, the valve block 23 is disposed at the drawing-side end of the cross member 14. Therefore, as shown in FIG. 5B, when the power unit body 16 is pulled out in the longitudinal direction of the cross member 14 until the regulating bolt B4 comes into contact with the holding bolt B1 on the pump body 60 side, the needle valve adjustment is performed. Since the portion 31, the flow control valve adjustment portion 32, and the relief valve adjustment portion 33 are exposed from the cross member 14, these adjustments and maintenance are easy to perform.

  Further, the block main body portion 28 has a needle valve adjusting portion 31, a flow control valve adjusting portion 32, a relief valve adjusting portion 33, a solenoid SOLA for a descending solenoid valve, an undulation on a drawing side end surface (longitudinal end surface) 30 which is one surface thereof. A solenoid SOLB of the switching solenoid valve and the pressure sensor 34 are disposed, and the outlet pipe connecting portions 43 and 44 are disposed in the vicinity of the upper corner of the insertion side end surface 38 and in the vicinity of both ends in the width direction. That is, there are no outlet pipe connection parts 43 and 44 (outlet pipes 41 and 42) on the surface on which the needle valve adjustment part 31, the flow control valve adjustment part 32, the relief valve adjustment part 33 and the like are arranged. For this reason, when the power unit 15 is pulled out in the longitudinal direction of the cross member 14 and adjustment and maintenance are performed on the adjustment unit, adjustment and maintenance of the adjustment unit are further facilitated.

  Further, the needle valve adjustment unit 31, the flow control valve adjustment unit 32, the relief valve adjustment unit 33, and the like are disposed on the drawer side end surface 30 of the block main body 28. Therefore, when the power unit 15 is pulled out in the longitudinal direction of the cross member 14, it is possible to prevent the needle valve adjusting portion 31, the flow control valve adjusting portion 32, the relief valve adjusting portion 33 and the like from interfering with the cross member 14, and these adjusting portions. Can be protected.

  The lead-out pipes 41 and 42 are arranged in the longitudinal direction of the cross member 14 so as to be along the upper chamfers 51 and 52 among the chamfers 51, 52, 53 and 54 of the oil tank 24. 11 is connected to the undulation cylinder 13 side. As in this configuration, the lead-out pipes 41 and 42 are arranged along the longitudinal direction of the cross member 14 from the pipe connection part arranged at the upper part of the insertion-side end face of the block main body part 28, thereby preventing the oil tank 24. The lead-out pipes 41 and 42 can be connected to the lead-out pipe connecting portions 43 and 44 without being connected, and the lead-out pipes 41 and 42 led out from the upper part of the insertion side end face of the valve block 23 are used as they are. By making it go to the side, the outlet pipes 41 and 42 can be easily routed, and the outlet pipes 41 and 42 can be easily maintained from above.

  Furthermore, by placing the outlet pipes 41 and 42 in the space between the cross member 14 and the chamfers 51 and 52, the outlet pipes 41 and 42 are not damaged when the power unit 15 is taken in and out of the cross member 14.

  Next, the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 having one end connected to the power unit 15 and the other end connected to the lifting cylinder 11, the hoisting cylinder 13, the outer terminal box 149, the remote control box 1410, etc. To do.

  In the present embodiment, an element corresponding to “inside the power unit” is an element that integrally operates (moves) when the power unit 15 is inserted into and removed from the cross member 14. On the other hand, the element corresponding to “outside the power unit” is an element outside the range that moves integrally. That is, it is an element that moves (moves) relative to the integrally moving (moving) portion when the power unit 15 is put in and out.

  As described above, the cross member 14 is fixed to the vehicle side including the cargo receiving platform 8. The power unit 15 is a hydraulic drive source for raising and lowering the load receiving table 8 and is housed in the cross member 14 and along the cross member longitudinal direction 14L (see FIG. 8A), the cross member longitudinal direction 14L. Can be pulled out from one end side (the right end side in FIG. 8A). The power unit 15 includes a power unit side hydraulic pipe connecting portion 15J1 communicating with the hydraulic pipe 22 in the power unit 15, and an electric terminal 15J2 connected to the electric wiring 21 in the power unit 15, as shown by a broken line in FIG. The power unit-side hydraulic pipe connection portion 15J1 is connected to the power unit-external hydraulic pipe L1, and as shown in FIGS. 5A and 8B, the power terminal-side electric wiring L2 is connected to the electric terminal 15J2. A flexible hose is used as the hydraulic piping L1 outside the power unit. As this hose, for example, a resin hose in which a wire is embedded can be used. Of the hydraulic power pipe L1 outside the power unit and the electrical wiring L2 outside the power unit connected to the power unit 15, portions located in the cross member 14 are shown in FIGS. 9A, 9B, and 11A, 11B. As shown, the cross member 14 is arranged in a substantially U shape (or a substantially Ω shape).

  As shown in FIGS. 2 and 5, the power unit side hydraulic pipe connecting portion 15J1 is located above the base 17 from the other end side (the right end side in FIGS. 2 and 5 and the left end side of the power unit 15 in FIG. 8A). The power unit hydraulic pipe extending from the valve block 23 to the other side on the power unit 15 is positioned at a tip portion passing below the controller 27. As shown in FIG. 7, when the power unit 15 is viewed from the other end of the cross member 14, the lifting connection 15 </ b> J <b> 1 a located on the left side of the power unit side hydraulic piping connection 15 </ b> J <b> 1 is connected to the lifting cylinder 11. It is a hydraulic port that supplies hydraulic oil, and the undulation connection 15 </ b> J <b> 1 b located on the right side is a hydraulic port that supplies hydraulic oil to the undulation cylinder 13.

  A plurality of electrical terminals 15J2 are provided in the controller 27. As shown in FIG. 8B, for example, there are three types of electrical terminals 15J2, one connected to the outer terminal box 149, one connected to the remote control box 1410, and one connected to the ground E. Incidentally, the outer terminal box 149 is provided outside the cross member 14 as shown in FIG. 8A, and includes a terminal block for relaying the electrical wiring to the driver's seat switch and the solenoid valve for the lift cylinder 11. . Further, the remote control box 1410 is a box for pulling out the wired remote controller 1411 which is located outside the cross member 14 and operates the lifting cylinder 11 and the hoisting cylinder 13 as shown in FIG.

  The power unit side hydraulic piping connection portion 15J1 and the electric terminal 15J2 are located at the back side portion 15X in the power unit 15 (the end portion on the other end side in the cross member longitudinal direction 14L in the power unit 15). For this reason, the length of the power unit external hydraulic pipe L1 and the power unit external electric wiring L2 between the power unit 15 and the opening 141 in the cross member 14 can be shortened.

  The cross member 14 is penetrated by the hydraulic piping L1 outside the power unit and the electrical wiring L2 outside the power unit. The “penetration” passes through a hydraulic flow path and a portion (electric path) through which current flows in the electric wiring L2 outside the power unit through a joint (for example, the joint 147) and a connector (for example, the lid inner surface connector C). Embodiments are also included. And the cross member 14 equips the vehicle front side in the cross member 14 with the opening part 141 which is a horizontally long ellipse in a side view as shown to Fig.8 (a) and FIG. The cross member 14 includes a lid member 142 so as to cover the opening 141 from the outside of the cross member 14.

  A packing 143 made of rubber or the like is disposed between the opening 141 and the lid member 142 in a region indicated by a two-dot chain line in FIG. Spacer plates 144 and 144 having substantially the same thickness as the packing 143 are attached above and below this region. In a state where the lid member 142 is overlapped with the spacer plates 144, 144, the mounting holes 144 a formed in the spacer plates 144 and the mounting holes 142 a formed in the lid member 142 are bolted to each other so as to cross. It is fixed to the body of the member 14.

  The lid member 142 has a plurality of outlets 142b1, 142b2, 142b3 through which the power unit outer hydraulic pipe L1 and the power unit outer electric wiring L2 pass through the cross member 14, except for the outlets 142b1, 142b2, 142b3. The opening of the opening 141 can be closed by the lid member 142. In the outlet 142b1, the power unit external hydraulic pipe L1 is fixed to the cross member 14 via the lid member 142. In the outlets 142 b 2 and 142 b 3, the power unit external wiring L 2 is fixed to the cross member 14 via the lid member 142.

  Specifically, for the power unit external hydraulic pipe L1, the joint 147 is located at the outlet 142b1 (see FIGS. 9A, 9B, 11A, B, and 12), and the power unit external electrical wiring L2 Is fixed by the cable gland G being positioned at the outlet 142b2 (see FIG. 12). As the joint 147, various pipe connection joints such as elbows and tees can be used. A cross member side fixing portion 14S (located at the outlet 142b2) for fixing the power unit external hydraulic pipe L1 and the power unit external electric wiring L2 is provided on the inner side of the cross member 14 in a portion penetrating the cross member 14. That is, the cross member side fixing portion 14 </ b> S is provided so as not to be exposed to the outside of the cross member 14. As shown in FIG. 12, a packing member 145 and a blindfold plate 146 are provided with a lid member 142 at the portion where the cable gland G is located in the lead-out port 142b2 through which the remote control electrical wiring L3 connected to the remote control box 1410 shown in FIG. By attaching to, the outlet 142b2 is closed.

  The power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 are fixed to the cross member 14 by the cross member side fixing portion 14S. Therefore, when the power unit 15 is inserted into and removed from the cross member 14 as shown in FIG. 8A, as shown in FIGS. 11A and 11B, the power unit external hydraulic pipe L1 with the cross member side fixing portion 14S as a base point. And the power unit external electric wiring L2 is made to follow the power unit 15. For this reason, it is possible to prevent the power unit 15 from being taken in and out due to the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 being tangled or stretched in the cross member 14, for example.

  Further, the cross member side fixing portion 14S is further cross member than the back side end surface 15Xa which is the end surface on the other end side in the cross member longitudinal direction 14L in the power unit 15 in a state where the power unit 15 is housed in the cross member 14. It is located on the other end side. For this reason, even when the power unit 15 is most pushed into the cross member 14 (stored state), the cross member-side fixing portion 14S does not interfere with the power unit 15, so the power unit external hydraulic pipe L1 and the power unit outside Damage to the electrical wiring L2 can be suppressed. Note that the back side of the power unit 15 is not necessarily flat but has irregularities in most cases. In this case, the cross member-side fixing portion 14S may be disposed with reference to the rear end face 15Xa which is an irregular surface. .

  Here, also on the power unit 15 side, the power unit external hydraulic pipe L1 is fixed by being connected to the power unit side hydraulic pipe connecting portion 15J1, and the power unit external electric line L2 is fixed to the portal cover 19 by the fixing bracket 191. ing. That is, the power unit 15 includes a power unit side fixing portion 15S that fixes the power unit external hydraulic pipe L1 and the power unit external electric wiring L2 to the back side portion 15X that is an end portion on the other end side in the cross member longitudinal direction 14L. For this reason, the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 are fixed by both the cross member side fixing portion 14S and the power unit side fixing portion 15S, and the respective fixing portions are in a free state in the cross member 14. For this reason, since the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 can freely move in the cross member 14 on the other end side of the cross member 14 from the back side portion 15X, they are not easily caught by the power unit 15. Therefore, when the power unit 15 is inserted into and removed from the cross member 14, the power unit external hydraulic pipe L1 and the power unit external electric wiring L2 are caused to follow the power unit 15 with the cross member side fixing portion 14S and the power unit side fixing portion 15S as the base points. For this reason, it is possible to prevent the power unit 15 from being taken in and out due to the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 being tangled or stretched in the cross member 14, for example. Further, for example, compared to the case where the power unit side fixing portion 15S is not provided, even when a tensile force is applied to the power unit side hydraulic pipe L1 and the power unit side electric wiring L2 at the end on the power unit side, the power unit outside hydraulic pipe L1 and the power unit outside Damage to the electrical wiring L2 (for example, cutting, disconnection, separation from the terminals of the power unit external electrical wiring L2, etc.) can be suppressed.

  The power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 are introduced into the cross member 14 from the outside of the cross member 14 through the opening 141 before the cover member 142 is attached (see, for example, FIG. 12), or the cross member. 14 can be pulled out from inside 14 through opening 141. For this reason, piping and wiring work can be facilitated. In particular, the opening 141 in the present embodiment has a larger opening area than the sum of the cross-sectional areas of the power unit external hydraulic pipe L1 and the power unit external electric wiring L2, so that the piping and wiring work can be facilitated. Since the opening of the opening 141 can be closed except for the outlets 142 b 1, 142 b 2, 142 b 3 by the lid member 142, foreign matter can be prevented from entering the cross member 14 through the opening 141. The outlets 142b1, 142b2, 142b3 are closed by the joint 147 or the cable gland G, respectively.

  Further, in the electric power line outside the power unit L2, a cover inner surface connector C for connecting the electric power line outside the power unit L2 is provided in the vicinity of the inner surface when the cover member 142 is attached to the cross member 14. For this reason, the lid inner surface connector C can easily connect / separate the wiring located in the cross member 14 and the wiring taken out from the cross member 14 out of the power unit external electrical wiring L2. Therefore, in a state where the lid member 142 is removed from the cross member 14, the power unit external electrical wiring L2 can be easily connected and separated.

  As shown in FIGS. 9 and 11, the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 are arranged in a substantially U shape (or a substantially Ω shape) in the cross member 14. The “substantially U-shape” is three-dimensionally formed as shown in FIGS. The power unit external hydraulic piping L1 and the power unit external electrical wiring L2 are connected to the power unit 15 (the power unit side hydraulic piping connection portion 15J1 for the power unit external hydraulic piping L1 and the electrical terminal 15J2 on the terminal block 271 for the power unit external electrical wiring L2). From the inside of the cross member 14 to the other end side in the cross member longitudinal direction 14L (the left end side shown in FIGS. 8A, 9A, 9B, 11A, and 11B), The direction is reversed on the other end side of the member longitudinal direction 14L, and one end side of the cross member longitudinal direction 14L (the right end side shown in FIGS. 8A, 9A, 9B, 11A, and 11B). The cross member 14 extends to the outside of the cross member 14 through the opening 141 in the middle of the cross member 14 in the longitudinal direction.

  More specifically, as shown in FIGS. 9A, 9B and 10, the power unit external hydraulic pipe L1 is connected to the other end in the cross member longitudinal direction 14L from the power unit side hydraulic pipe connecting portion 15J1 (15J1a, 15J1b). When viewed from the side, it extends to the upper left (upper rear side of the vehicle), extends to the other end side along the upper left corner 14Z1 of the cross member 14, and at the other end side, lower right (front of the vehicle) The lower right corner portion 14Z2 of the cross member 14 extends along the cross member longitudinal direction 14L to one end side in the cross member longitudinal direction 14L to form a cross member side hydraulic pipe connection portion 14J. Connected.

  Outside the cross member 14, the power unit external hydraulic pipe L <b> 1 is connected to the lifting cylinder 11 and the hoisting cylinder 13 via an external pipe L <b> 4 (see FIGS. 9A and 9B) that is exposed outside the cross member 14. The power unit external electrical wiring L2 is connected to an external terminal box 149 and a remote control box 1410 (see FIGS. 8A and 8B) provided outside the cross member 14.

  In addition, regarding the external terminal box 149, with regard to the electrical wiring between the opening 141 and the external terminal box 149, the connection portion to the terminal block provided in the external terminal box 149 is not illustrated in the external terminal box 149. Covered by a cover plate. Since the connection portion is thus covered by the cover plate, the electric wiring between the opening 141 and the outer terminal box 149 cannot be removed from the terminal block unless the cover plate is removed. For this reason, when wiring the electrical wiring from the outer terminal box 149 to the outside (see FIG. 8B), the operator accidentally removes the electrical wiring between the opening 141 and the outer terminal box 149. Therefore, efficient wiring work is possible.

  Since the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 are arranged in a substantially U shape in the cross member 14, the power unit 15 hydraulic pipe L1 and the power unit external electrical wiring L2 are connected to the power unit 15 side and the cross member side fixed. The length connecting the portion 14S (as an example, the length L1x of the power unit external hydraulic pipe L1 is shown in FIG. 11B) is a connection location on the power unit 15 side when the power unit 15 is pulled out from the cross member 14. Is longer than a linear distance connecting the cross member side fixing portion 14S (as an example, the linear distance L1y is shown in FIG. 11B).

  For this reason, as shown in FIG. 11 (b), even when the power unit 15 is pulled out from the cross member 14 to the maximum, the power unit external hydraulic pipe L1 and the power unit external electric wiring L2 are in a slack state, and are substantially U-shaped. Looseness remains. Therefore, when the power unit 15 is taken in and out, the power unit external hydraulic pipe L1 and the power unit external electric wiring L2 are not extended and no tensile force is applied, so that damage can be suppressed. When the power unit 15 is housed in the cross member 14, the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 start to bend according to the remaining “U-shape”, so that the power unit 15 starts to bend from a fully extended state. Compared to the above, the power unit 15 can be stored smoothly without being caught easily.

  Further, the power unit side hydraulic pipe connecting portion 15J1 is a hose joint formed in a substantially cylindrical shape in the back side portion 15X of the power unit 15. A hose which is a power unit external hydraulic pipe L1 is inserted and fixed to the power unit side hydraulic pipe connecting portion 15J1. The power unit side hydraulic pipe connecting portion 15J1 has an end portion that extends along the cross member longitudinal direction 14L and opens toward the other end side in the cross member longitudinal direction 14L.

  Here, when a resin hose is used as the hydraulic pipe L1, if the hose is bent excessively, the wire embedded in the hose is cut and damaged. And if it bends still more strongly, the space inside a hose will be closed and hydraulic oil will not flow, and there exists a possibility that a hose may burst by the oil pressure raised by closure. Further, when the hose is bent excessively in the vicinity of the joint to which the hose is connected, a gap is formed between the hose and the joint, resulting in oil leakage. In the present embodiment, the power unit side hydraulic pipe connecting portion 15J1 is located on the back side portion 15X of the power unit 15 and is open toward the other end side in the cross member longitudinal direction 14L. Since excessive bending is prevented, it is possible to suppress the occurrence of the above-described disadvantages.

  Further, the cross member side fixing portion 14S includes a cross member side hydraulic pipe connecting portion 14J (corresponding to the joint 147 provided on the lid member 142 described above that is located on the inner surface of the cross member 14). An end portion of the cross member side hydraulic pipe connecting portion 14J is opened in the cross member 14 while extending toward the other end side in the cross member longitudinal direction 14L. For this reason, the hydraulic pipe (hose) L1 connected to the cross member side hydraulic pipe connecting portion 14J is connected to the cross member longitudinal direction 14L as shown in FIGS. 9A, 9B, 11A, and 11B. It is guided to the other end side. Therefore, as shown in FIG. 11B, even when the power unit 15 is pulled out from the cross member 14, a substantially U-shaped slack is left in the power unit external hydraulic pipe L1 and the power unit external electric wiring L2. Further, when the power unit 15 is housed in the cross member 14, the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 start to bend according to the remaining “U-shape”, and therefore start to bend from the fully extended state. Compared to the above, the power unit 15 can be housed smoothly without being caught in the power unit outside hydraulic pipe L1 and the power unit outside electric wiring L2.

  With respect to the ends of the power unit side hydraulic pipe connection portion 15J1 and the cross member side hydraulic pipe connection portion 14J, the “opening while extending toward the other end side” is a virtual vertical orthogonal to the longitudinal direction of the cross member 14 and the power unit 15. The direction is the other end side that does not include the vertical plane with respect to the plane. That is, the ends of the power unit side hydraulic piping connection portion 15J1 and the cross member side hydraulic piping connection portion 14J are opened while extending within a range of more than 0 ° and less than 180 ° with respect to the vertical plane. The power unit side hydraulic piping connection portion 15J1 of the present embodiment opens while the central axis extends at an angle of 90 °, and the cross member side hydraulic piping connection portion 14J has its central axis slightly below 90 °. It opens while extending at an angle. In the present embodiment, the cross member side hydraulic pipe connecting portion 14J is opened at an angle with the central axis being 100 °.

  Furthermore, the power unit external hydraulic piping L1 connected to the power unit side hydraulic piping connection portion 15J1 and the cross member side hydraulic piping connection portion 14J is arranged from the top to the bottom, the power unit side hydraulic piping connection portion 15J1, and the cross member side hydraulic piping connection portion. In the case of being connected toward 14J, the angle range is more than 0 ° and not more than 90 ° with respect to the vertical plane as described above. On the other hand, the power unit external hydraulic piping L1 connected to the power unit side hydraulic piping connection portion 15J1 and the cross member side hydraulic piping connection portion 14J is from the bottom to the top, the power unit side hydraulic piping connection portion 15J1, and the cross member side hydraulic piping connection portion. In the case of being connected toward 14J, the angle range is 90 ° or more and less than 180 ° with respect to the vertical plane as described above. In this case, at the ends of the power unit side hydraulic piping connection portion 15J1 and the cross member side hydraulic piping connection portion 14J, the power unit external hydraulic piping L1 extends from the power unit side hydraulic piping connection portion 15J1 and the cross member side hydraulic piping connection portion 14J. Will open in the direction. For this reason, the power unit external hydraulic pipe L1 is easily formed in the “U-shape” in the cross member 14.

  Further, the ends of the power unit side hydraulic pipe connecting portion 15J1 and the cross member side hydraulic pipe connecting portion 14J are configured not to face the horizontal direction having an angle of 90 ° with respect to the vertical plane as described above. You can also In this configuration, when the power unit 15 is taken in and out, a portion where the power unit external hydraulic pipe L1 is folded back to the “U” shape between the power unit 15 and the opening 141 in the cross member 14 is. To the end surface opposite to the end surface of the cross member 14 on the abutting side (the top wall 14B corresponds to the bottom wall 14A, and the side wall 14D on the vehicle rear side corresponds to the side wall 14C on the vehicle front side). It is possible to suppress an increase in the bending of the hydraulic piping L1 outside the power unit.

  Further, regarding the cross member side hydraulic pipe connecting portion 14J, the power unit external hydraulic pipe L1 extending from the cross member side hydraulic pipe connecting portion 14J is in contact with the inner surface of the cross member 14 when viewed from the front or rear of the vehicle. Of the two upper and lower points starting to be folded back to the “U-shape” at the other end of the cross member 14 of the power unit external hydraulic pipe L1, the lower point and the cross member 14 of the cross member side hydraulic pipe connecting portion 14J (this embodiment) In the form, from the straight line connecting the attachment center with the lid member 142), the angle is within a range of less than 135 ° in an angle with the vertical plane as a reference (angle 0 °) as described above.

  In the present embodiment, the extending direction of the power unit side hydraulic pipe connecting portion 15J1 and the cross member side hydraulic pipe connecting portion 14J and the direction of the opening of each connecting portion 15J, 14J match, but do not match. Also good. In short, it is only necessary that the extending direction of the power unit external hydraulic pipe L1 in the connecting portion to the power unit side hydraulic pipe connecting portion 15J1 and the cross member side hydraulic pipe connecting portion 14J is in the angle range.

  In the present embodiment, a plurality of power unit external hydraulic pipes L1 and power unit external electric wires L2 are bundled and arranged in the cross member 14. Specifically, the four wirings constituting the power unit external electrical wiring L2 are bundled by a corrugated tube, and are tied together with vinyl tape together with the two pipes constituting the power unit external hydraulic piping L1. For this reason, the power unit external hydraulic pipe L1 and the power unit external electric wiring L2 move in the cross member 14 in a bundled unit, so that the power unit external hydraulic pipe L1 and the power unit external electric wiring L2 are not easily entangled. For this reason, damage to the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 when the power unit 15 is taken in and out can be suppressed.

  The present invention can be variously modified without departing from the spirit of the present invention. In addition, the specific configuration of each part is not limited to the above embodiment.

  For example, in the embodiment, the cross member 14 is configured to include the lid member 142 that covers the opening 141 from the outside as shown in FIGS. 8A and 12, but the lid member 142 is modified. As an example of the form, as shown in FIG. 13 and FIG. 14A, a box portion 148 may be provided. Hereinafter, the box member 148 and the cross member 14 including the box portion 148 will be described.

  As shown in FIG. 13, the box portion 148 includes a box base portion 1481 and a box lid portion 1482 made of hard resin, and a packing 1483 made of soft resin such as rubber. As shown in FIG. 14A, the box base portion 1481 is disposed so as to cover the opening portion 141 of the cross member 14, and the box lid portion 1482 is disposed so as to cover the box base portion 1481 from the vehicle front side. As a result, a box-shaped box portion 148 is disposed in front of the opening 141 in the vehicle, and a space through which the power unit external hydraulic pipe L1 and the power unit external electric wiring L2 can pass is secured as shown in FIG. The The packing 1483 is sandwiched between the box base portion 1481 and the box lid portion 1482, and separates the space and the external space of the box portion 148 except for the portion where the power unit external hydraulic pipe L1 and the power unit external electric wiring L2 pass. Can do.

  The box base portion 1481 is a bottom surface portion of the cross member 14 that faces the front surface of the vehicle in a cross member main body 140 (shown in FIGS. 14A and 14B) that is formed in a hollow rectangular cross section. 1481a, and a side surface portion 1481b raised from the upper end edge, the lower end edge of the bottom surface portion 1481a, and the edge portion on the other end side in the longitudinal direction of the cross member 14 (left end edge portion in FIG. 13) to the vehicle front side. . A plurality of ribs 1481c are formed on the side surface portion 1481b for reinforcement. The side surface portion 1481b is mostly covered by the side surface portion 1482b of the box lid portion 1482 as shown in FIG. 14B when the box lid portion 1482 is attached to the box base portion 1481. For this reason, the vertical dimension and the width dimension at the outer edge of the side surface portion 1481b are smaller than the vertical dimension and the width dimension at the inner edge of the box lid portion 1482. In the box base portion 1481, the side surface portion 1481b is not formed on one end side in the longitudinal direction of the cross member 14 (the right end side in FIG. 13), and the side opening portion through which the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 pass. 1481d. In this embodiment, the opening is formed as a side opening 1481d on one end side in the longitudinal direction of the cross member 14. However, the present invention is not limited to this, and the opening is formed on the other end, upper end, and lower end. (The opening of the box lid 1482 is also the same).

  A bottom surface opening portion 1481e is formed in the bottom surface portion 1481a so as to penetrate in the vehicle front-rear direction. In this embodiment, as shown in FIG. 14A, this corresponds to the opening 141 of the cross member 14 being formed in a substantially rectangular shape, and the bottom opening 1481e is substantially smaller than the opening 141. It is a rectangle. Further, a rear projecting frame 1481f is formed to project from the periphery of the bottom opening 1481e. As shown in FIG. 14B, the rear projecting frame 1481f extends to the vehicle rear side at the other end portion 1481f1 on the edge portion on the other end side in the longitudinal direction of the cross member 14 (left end edge portion in FIG. 13). After that, the cross member body 140 is folded back to the other end side (L-shaped in a cross-sectional view). On the other hand, one end portion 1481f2 on the same end edge (right end edge portion in FIG. 13) has a shape that extends toward the rear side of the vehicle but is not folded back as described above (I shape in a cross-sectional view). Note that a portion of the bottom surface portion 1481a adjacent to the one end portion 1481f2 is a binding band (illustrated) that functions as a cross member-side fixing portion for securing the power unit external hydraulic pipe L1 and the power unit external electric wiring L2 to the box base portion 1481. Band through-hole 1481j through which the (not) can pass is formed. Since the rear projecting frame 1481f has such a shape, for example, the other end portion 1481f1 is first hooked on the edge portion of the opening portion 141 of the cross member 14, and the one end portion 1481f2 is positioned along the edge portion of the opening portion 141. By doing so, the box base portion 1481 can be easily aligned with the cross member main body 140. Further, since the rear projecting frame 1481f is present, the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 that pass outward through the opening 141 are connected to the other end 1481f1 as shown in FIG. The vehicle approaches the vehicle rear side and the vehicle front side of the one end portion 1481f2 (in some cases, contact). For this reason, since the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 do not directly touch the edge portion of the opening 141, damage can be prevented.

  The bottom surface portion 1481 a is provided with a plurality of (four in this embodiment) body fixing bolt through holes 1481 g for bolting the box base portion 1481 to the cross member main body 140. In order to fix the box base portion 1481 to the cross member main body 140, an operator puts a nut (not shown) into the cross member main body 140 by hand through the opening 141, and the main body fixing bolt is fixed to the nut. A bolt (not shown) is inserted into the through hole 1481g from the front of the vehicle and screwed. In this fixing, as shown in FIG. 14 (b), between the cross member main body 140 and the bottom surface portion 1481a of the box base portion 1481, around the rear protruding frame 1481f, for waterproofing and preventing dust intrusion. The seal member 148S is sandwiched.

  The side surface portion 1481b includes a plurality of base side bolt through holes 1481h (four locations in this embodiment) through which the bolts 148B for fixing the box lid portion 1482 pass. Although not shown, the vehicle rear side end portion of the base side bolt through hole 1481h is enlarged so that the nut (hexagonal nut in the present embodiment) 148N can be arranged without rotating. The box base portion 1481 is fixed to the cross member main body 140 in a state where the nut 148N is disposed in this portion (in this state, the base side bolt through hole 1481h is blocked by the outer surface of the cross member main body 140. In this state, the box base portion 1482 is covered with the box lid portion 1482, the bolt 148B is inserted into the base side bolt through hole 1481h through the box lid portion 1482, and the bolt 148B is inserted in advance. The box portion 148 can be assembled by screwing into the nut 148N arranged in the base side bolt through hole 1481h (see FIG. 13).

  On the inner surface of the box base portion 1481 at a position on the one end side in the longitudinal direction of the cross member 14 relative to the bottom surface opening portion 1481e, a packing groove portion 1481i is provided to dispose the packing 1483 from the bottom surface portions 1481a to 1481b.

  The box lid portion 1482 includes a top surface portion 1482a located opposite to the vehicle front side surface of the cross member main body 140, an upper end edge and a lower end edge of the top surface portion 1482a, and an edge portion on the other end side in the longitudinal direction of the cross member 14 ( A side surface portion 1482b is provided from the left end edge of FIG. 13 to the vehicle rear side. A plurality of ribs 1482c are formed on the top surface portion 1482a and the side surface portion 1482b for reinforcement. In the box lid portion 1482, the side surface portion 1482b is not formed on one end side in the longitudinal direction of the cross member 14 (the right end side in FIG. 13), and the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 are connected from the inside of the box 148 to the outside. It is a side opening 1482d that passes through.

  As shown in FIG. 14B, when the box portion 148 is assembled, the vehicle rear side surface of the top surface portion 1482a of the box lid portion 1482 and the end portion of the side surface portion 1481b of the box base portion 1481 are The bolt 148B is tightly attached to 148N (illustration shows the side part 1481b formed on the side, but the side part 1481b formed on the upper side and the lower side is also the same). . Furthermore, since the side surface portion 1481b of the box base portion 1481 and the side surface portion 1482b of the box lid portion 1482 overlap each other as shown in the drawing, the contact portion is separated from the gap 148X between the outer surface of the cross member main body 140 and the box lid portion 1482. It is in a position far away from the vehicle in the longitudinal direction. Moreover, the gap 148X is located on the vehicle rear side of the box lid 1482. That is, this position is a position where moisture and dust are less likely to enter when the vehicle travels compared to the vehicle front side. With the above configuration, moisture and dust can be prevented from entering the box portion 148 in portions other than the side openings 1481d and 1482d.

  The top surface portion 1482a includes a plurality of (four in this embodiment) lid portion side bolt through holes 1482e through which the bolts 148B for fixing the box lid portion 1482 to the box base portion 1481 pass.

  The packing 1483 is disposed in the packing groove 1481 i of the box base portion 1481. For this reason, the packing 1483 can be arranged so as not to be displaced. The packing 1483 is located inward of the side opening 1481d in the box base 1481, and the rear packing 1483a in which the upper surface, the lower surface, and the vehicle rear surface are in close contact with the box base 1481, and the side opening in the box lid 1482. The front packing 1483b is located on the inside of 1482d, the upper surface and the lower surface are in close contact with the box base portion 1481, and the front surface of the vehicle is in close contact with the box lid portion 1482. By the contact, moisture and dust can be prevented from entering the box portion 148 between the box base portion 1481 and the packing 1483 and between the box lid portion 1482 and the packing 1483.

  Each of the packings 1483a and 1483b has a block shape including a plurality of recesses 1483c having a semicircular longitudinal cross section. These recessed portions 1483c become circular holes when the box portion 148 is assembled, and the portions other than the circular holes can be closed at the side opening portions 1481d and 1482d of the box base portion 1481 and the box base portion 1482. The power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 pass through the circular hole. Since the packing 1483 is formed of a soft resin such as rubber, the box portion 148 is formed by forming the concave portion 1483c with an appropriate size with respect to the cross-sectional shapes of the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2. Intrusion of moisture and dust into the interior of the can be suppressed. The “appropriate size” means that the packing 1483 has a lower hardness (softer) than the box base 1481 and the box lid 1482, so that the box base 148 and the box lid 1482 are pressed against each other after the box 148 is assembled. The size is such that it is compressed. By compressing the packing 183, the packing 183 can be more closely attached to the box base portion 1481, the box lid portion 1482, the power unit external hydraulic pipe L1, and the power unit external electrical wiring L2 as compared with the case where the packing 183 is not compressed. .

  In this embodiment, the opening 141 is not directly closed like the lid member 142 of the above embodiment. For this reason, as shown in FIG.14 (b), the power unit exterior hydraulic piping L1 and the power unit exterior electrical wiring L2 can be passed with respect to the opening part 141, without passing through a coupling and a connector. At that time, it can be fixed by sandwiching the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 with the packing 1483. Further, the power unit external hydraulic pipe L1 and the power unit external electric wiring L2 can also be fixed by tying a binding band attached to the band through hole 1481j. That is, the packing 1483 or the binding band functions as a cross member side fixing portion. The binding band is not provided, and the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 can be fixed only by the packing 1483. In this embodiment, the bottom opening 1481e of the box base 1481, the side opening 1481d of the box base 1481, the side opening 1482d of the box lid 1482, and the recess 1483c of the packing 1483 function as the outlet. As described above, according to this embodiment, the power unit external hydraulic piping L1 and the power unit external electrical wiring L2 can be easily extended from the inside of the cross member 14 to the outside, and the configuration for fixing the piping and wiring can be simplified.

  Further, in this embodiment, a recess 1483c in the packing 1483 (packing 1483 as a fixing member on the cross member side) is opened while extending toward the other end in the longitudinal direction of the cross member 14, as shown in FIG. . In this embodiment, as shown in the figure, the entire recess 1483c opens while extending toward the other end in the longitudinal direction of the cross member 14, but at least the end portion on the bottom surface opening 1481e side of the recess 1483c is a cross. The member 14 may be open while extending toward the other end side in the longitudinal direction. With this configuration, when the power unit 15 is pulled out, a substantially U-shaped slack is left in the power unit external hydraulic pipe L1 or the power unit external electrical wiring L2. When the power unit 15 is housed, the piping / wiring is bent according to the “U-shape”. Therefore, the power unit 15 is not easily caught compared to when the power unit outside hydraulic piping L1 or the power unit outside electric wiring L2 is bent from a straight state. It can be done smoothly.

  As a modification of the present invention, in addition to the above, for example, a plurality of power unit external hydraulic pipes L1 and power unit external electric wires L2 can be collected and accommodated in a flexible tube. In this configuration, the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 can be integrated in a larger range in the longitudinal direction than in the configuration bundled by partial tying. And the load concerning the electric power line L2 outside a power unit can be reduced. This is because, when partially tied, when the power unit 15 is moved in and out, the unbound portion behaves differently and an excessive load may be applied to the bound portion.

  Further, the opening 141 can be formed at the center in the longitudinal direction of the cross member 14. In this configuration, the power unit external hydraulic piping L1 and the power unit external electrical wiring L2 taken out to the outside of the cross member 14 can be distributed to approximately the same length, so that the power unit external hydraulic piping L1 and the power unit external electrical wiring L2 can be shared. The handling work of the external power unit hydraulic pipe L1 and the external power unit wiring L2 outside the cross member 14 is also facilitated.

  Moreover, although the opening part 141 was made into the oblong oval shape by the side view in the said embodiment, it is not limited to this. For example, the opening shape is a rectangle (including those with rounded corners), a plurality of arranged circles (with circular openings spaced apart or partially overlapped) ) And the like.

  In addition, the lid member 142 is configured as a single sheet in the embodiment, but is not limited thereto, and may be configured by combining two or more sheets.

  The outlets 142b1, 142b2, 142b3 can also be formed directly on the cross member 14.

  Moreover, although the power unit side fixing | fixed part 15S is located in the back | inner side part 15X of the power unit 15 in the said embodiment, it is not limited to this. For example, the power unit side fixing portion 15 </ b> S can be positioned at the drawer side end of the power unit 15.

  Further, the power unit side hydraulic piping connection portion 15J1 and the electric terminal 15J2 are located at the drawing side end portion of the power unit, and the power unit outside hydraulic piping L1 and the power unit outside electric wiring L2 extending from the drawing side end portion are in the longitudinal direction of the power unit 15. And can be fixed by a fixture 191 at the back end of the power unit.

  Further, the cross member-side fixing portion 14S of the above-described embodiment has a rear end face 15Xa that is an end face on the other end side in the cross member longitudinal direction 14L of the power unit 15 in a state where the power unit 15 is housed in the cross member 14. Is also located on the other end side of the cross member 14, but is not limited thereto. For example, when there is a space in which the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 can be disposed between the power unit 15 and the top surface of the cross member 14, it is closer to one end side of the cross member 14 than the rear end surface 15Xa. Thus, the cross member side fixing portion 14 </ b> S can be positioned above the power unit 15. Even with this configuration, the cross member-side fixing portion 14S does not interfere with the power unit 15.

  Further, the power unit external hydraulic pipe L1 and the power unit external electrical wiring L2 are viewed from the other end side of the cross member, for example, as shown in FIG. Although it is arranged over the part 14Z2), it is not limited to this. For example, it can be disposed diagonally in a symmetrical relationship with the embodiment. Further, by providing a guide member inside the cross member 14, the power unit external hydraulic pipe L1 and the power unit external electric wiring L2 can be arranged in the vertical direction.

  Further, the cross member side fixing portion 14S is inside the cross member 14, and the power unit external hydraulic pipe L1 and the power unit external electric wiring L2 that move following the power unit 15 when the power unit 15 is inserted and removed are constant even when the power unit 15 is inserted and removed. It is preferable that it is fixed so as to keep the length of. By doing so, for example, the piping and the electrical wiring move in and out of the cross member 14 due to vehicle vibration or the power unit 15 being pulled out, and the length of the piping and the electrical wiring in the cross member 14 changes, so that the power unit 15 It is possible to prevent functional troubles from occurring due to the piping and electrical wiring being entangled or stretched during loading and unloading.

  Moreover, in the said embodiment, the part located in the cross member 14 among the power unit external hydraulic piping L1 and the power unit external electrical wiring L2 is arrange | positioned in the cross member 14 in the substantially U shape (or substantially Ω character shape). It was a thing. However, for example, only the power unit external hydraulic pipe L1 is arranged in a substantially U shape (substantially Ω shape), and the power unit external electrical wiring L2 is configured to be maintained even when the power unit 15 is taken in and out. (For example, the electrical wiring is formed into a shape that can be expanded and contracted (coil spring shape or the like), or a contact that is slidable with respect to the rail extending in the longitudinal direction is provided in the cross member 14). It does not have to be arranged in a shape (substantially Ω-shaped).

  DESCRIPTION OF SYMBOLS 1 ... Lorry car, 5 ... Cargo stand raising / lowering device, 8 ... Cargo stand, 11 ... Lifting cylinder, 13 ... Lifting cylinder, 14 ... Cross member, 15 ... Power unit, 141 ... Opening part, 142 ... Cover member, 14S ... Cross member side fixing part, 14J: Cross member side hydraulic pipe connection part, 14L ... Cross member longitudinal direction, 15S ... Power unit side fixing part, 15J1 ... Power unit side hydraulic pipe connection part, 15J2 ... Electrical terminal, 15X ... Back side part, 15Xa ... back side end face, L1 ... hydraulic piping outside power unit, L2 ... electrical wiring outside power unit

Claims (9)

A vehicle-side structural member including a load receiving table, and a cross member extending in the vehicle width direction;
A power unit that is housed in the cross member and that can be pulled out along the longitudinal direction of the cross member and that is a hydraulic drive source for raising and lowering the load receiving table;
A part of the hydraulic power piping outside the power unit and the electrical wiring outside the power unit connected to the power unit, a part of which is located in the cross member,
The power unit can be pulled out from one end side in the longitudinal direction of the cross member,
At least the power unit external hydraulic pipe is disposed in the cross member longitudinal direction from the connection point to the power unit when the power unit is housed in the cross member and pulled out from the cross member. Extending to the other end side of the cross member, the direction is reversed on the other end side in the longitudinal direction of the cross member, extends to one end side in the longitudinal direction of the cross member, and then extends out of the cross member through the cross member.
The cross member includes a cross member side fixing portion that fixes the hydraulic piping outside the power unit to the cross member at the penetrating portion ,
The length connecting the connecting part on the power unit side and the cross member side fixing portion of the hydraulic piping outside the power unit or the electric wiring outside the power unit is the connection on the power unit side when the power unit is pulled out from the cross member. A load receiving table elevating device longer than a linear distance connecting a portion and the cross member side fixing portion .   The power unit includes a power unit side fixing portion that fixes the power unit external hydraulic pipe to a back side portion that is an end portion on the other end side in the cross member longitudinal direction in addition to the cross member side fixing portion. Loading platform lifting device.   The cross member side fixing portion is located in the cross member, and in the state where the power unit is housed in the cross member, a back side end surface which is an end surface on the other end side in the cross member longitudinal direction of the power unit The load receiving table elevating device according to claim 1 or 2, further positioned on the other end side of the cross member. The cross member includes an opening through which the hydraulic piping outside the power unit passes, and a lid member attached to the opening.
The load receiving base according to any one of claims 1 to 3, wherein the lid member has a lead-out port through which the hydraulic piping outside the power unit passes through and allows the opening of the opening to be closed except for the lead-out port. lift device. The electric wiring outside the power unit extends from the connection point to the power unit to the other end side in the cross member longitudinal direction through the inside of the cross member, and the direction is reversed at the other end side in the cross member longitudinal direction. Extending to one end side in the direction and extending through the cross member to the outside of the cross member,
The lid member includes the cross member side fixing portion,
The cross member-side fixing portion includes a connector for connecting the electric wiring outside the power unit located in the cross member on an inner surface side when the lid member is attached to the cross member. Loading platform lifting device. The power unit includes a power unit side hydraulic pipe connection or an electrical terminal,
The load receiving table elevating device according to any one of claims 1 to 5 , wherein the power unit side hydraulic pipe connecting portion or the electric terminal is located on the other end side of the power unit in the longitudinal direction of the cross member. The power unit side hydraulic pipe connecting portion is located at a back side portion which is an end portion on the other end side in the cross member longitudinal direction in the power unit, and the end portion is directed toward the other end side in the cross member longitudinal direction. The load receiving table elevating device according to claim 6 , wherein the device is opened while extending. The cross member side fixing portion includes a cross member side hydraulic pipe connecting portion,
The load receiving platform elevating device according to any one of claims 1 to 7 , wherein the cross member side hydraulic pipe connecting portion is open while an end portion extends toward the other end side in the cross member longitudinal direction. The cross member is formed in a hollow cross-sectional rectangular shape,
  The load receiving stand according to any one of claims 1 to 8, wherein the power unit external hydraulic pipe is disposed across a diagonal of a rectangular cross section of the cross member as viewed from a longitudinal end portion side of the cross member. lift device.

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