JP6341845B2 - Cable guide device - Google Patents

Description

  The present invention relates to a cable guide device that is attached to a traveling body such as a transport carriage and is used to guide a cable that transmits power to the traveling body in a cable pit.

  A traveling body traveling along a rail such as a transport carriage needs to be supplied with power from an external power source through a cable. As a method of handling the cable, a curtain method, a cable winding method, and the like are known. In the cable winding system, a cable guide device is attached to a traveling body, one end side portion of the cable is wound around a winder such as a drum, and the other end side portion of the cable is placed in a grooved cable pit formed on the traveling road surface. Lay down. The cable guide device guides the cable fed from the winder into the cable pit by the guide roller when the traveling body travels forward.

  In the cable guide device of Patent Document 1, a plurality of guide rollers are arranged on the vertical lower side of the winder. The guide roller is attached to the frame, and a horizontal roller capable of rolling in the cable pit is attached to the frame.

JP 2012-70588 A

  Incidentally, the rail includes not only a straight section but also a curved section, and a cable section formed along the rail may include a curved section. When the guide roller passes over the curve section of the cable pit, in the prior art structure, due to the contact between the cable pit and the horizontal roller, a rotational force around the vertical axis is applied to the frame so as to follow the bending of the curve section. As a result, it is considered that the guide roller rotates around the vertical axis with respect to the winder.

  When the guide roller rotates around the vertical axis, the extension angle (described later) of the cable extending from the winder increases, and the cable can easily ride on the flange portion of the winder. If you attempt to wind the cable with the winder in this state, the cable run position will be displaced in the circumferential direction of the flange, and the cable will be caught by the components around the winder, making it difficult to wind the cable properly. There is a risk of becoming.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a cable guide device that makes it easy to wind up a cable appropriately when guiding the cable in a cable pit including a curved section. is there.

  A cable guide device according to an aspect of the present invention is a cable guide device that is attached to a traveling body that travels along a rail and is used to guide a cable in a cable pit formed on a traveling road surface. From the winder that winds the cable from one end, the cable holding part that holds the cable in the cable pit by touching a part of the other end of the cable laid in the cable pit from the upper side, and the winder A first cable guide portion around which a part of the cable is wound in a range reaching the cable holding portion.

  According to an aspect of the present invention, when a cable is guided into a cable pit including a curved section, the cable can be easily wound up appropriately.

It is a top view which shows roughly the traveling body in which the cable guide apparatus which concerns on 1st Embodiment is used. It is a side view which shows the cable guide apparatus which concerns on 1st Embodiment. It is an expanded side sectional view showing the guide body of the cable guide device concerning a 1st embodiment. 4A is a diagram schematically showing the BB line arrow of FIG. 3, and FIG. 4B is a diagram schematically showing the CC line arrow of FIG. (C) is a figure which shows roughly the DD arrow of FIG. It is a top view which shows typically the state by which the cable was laid in the curve area of a cable pit. FIG. 6A schematically shows a state when the guide body according to the first embodiment passes on the straight section of the cable pit, and FIG. 6B shows a state where the guide body passes on the curve section of the cable pit. FIG. 6C is a diagram showing only the holding roller and the second cable guide roller of the guide body of FIG. 6B. It is a top view which shows typically the positional relationship of the traveling body and cable guide apparatus which concern on 1st Embodiment. It is a side view which shows the cable guide apparatus which concerns on 2nd Embodiment. It is a figure which shows roughly the EE arrow view of FIG.

  Hereinafter, in each embodiment, the same code | symbol is attached | subjected to the same component and the overlapping description is abbreviate | omitted. Moreover, in each drawing, a part of component is abbreviate | omitted suitably for convenience of explanation.

[First Embodiment]
FIG. 1 is a plan view schematically showing a traveling body 12 in which the cable guide device 10 according to the first embodiment is used. The traveling body 12 is a transport cart used in an automatic warehouse or the like. The traveling body 12 can travel along a rail 16 laid on the traveling road surface 14. The rail 16 includes a pair of a left rail 16L and a right rail 16R that are laid on the traveling road surface 14 with a space left and right.

  The traveling body 12 includes a plurality of wheels 18 that roll along the rails 16, and a main body 20 that is supported by the plurality of wheels 18. The wheels 18 include a pair of front wheels 18 </ b> F installed on the front left and right of the main body 20 and a pair of rear wheels 18 </ b> R installed on the rear left and right of the main body 20. The left front wheel 18F and the rear wheel 18R roll along the left rail 16L and become drive wheels that are driven to travel by a travel drive motor (not shown). The right front wheel 18F and the rear wheel 18R are driven wheels that roll along the right rail 16R. A cable guide device 10 is attached to a side portion of the main body 20.

  An electric device (not shown) is mounted on the traveling body 12, and one end portion (the left end portion in FIG. 1) of the cable 22 for transmitting power to the electric device is electrically connected. This electric device includes a motor drive device including the above-described travel drive motor and a winding device 34 described later. An external device (not shown) such as an external power source is connected to the other end portion (the right end portion in FIG. 1) of the cable 22. Electric power is supplied to the electric device of the traveling body 12 from the external device through the cable 22, but a control signal or the like may be transmitted.

  A grooved cable pit 26 (hereinafter also simply referred to as pit 26) is formed on the traveling road surface 14 along the right rail 16R on the right side of the right rail 16R. The other end portion 22 b of the cable 22 is laid in the pit 26. The other end portion 22 b of the cable 22 is accommodated in the pit 26 so as to be located below the traveling road surface 14. In the following description, the extending direction of the pit 26 is the front-rear direction, and the groove width direction of the pit 26 is the horizontal direction. Further, the side where the cable 22 is not laid in the pit 26 (the left end side in FIG. 1) is the front side, and the side where the cable 22 is laid (the right end side in FIG. 1) is the rear side.

  The rail 16 has a shape in which a straight section 16a that extends linearly and a curved section 16b that curves so as to be curved are combined in plan view. The pit 26 also has a shape in which a straight section 26a that extends linearly and a curved section 26b that curves so as to be curved are combined in a plan view. Both the rail 16 and the pit 26 are provided with curved sections 16b and 26b in a part of the extending direction thereof.

  The cable guide device 10 includes a base frame 28 as a base body attached to a side portion of the traveling body 12. The base frame 28 is configured by combining a plurality of horizontal frame members 30 and a plurality of front and rear frame members 32. Each of the frame members 30 and 32 is a long metal member having a predetermined cross-sectional shape such as an L shape. The plurality of horizontal frame members 30 are provided so as to protrude laterally from the side portion of the traveling body 12 with an interval in the front-rear direction of the pit 26, and extend in the lateral direction of the pit 26. The plurality of front and rear frame members 32 are connected to the plurality of horizontal frame members 30 in the front-rear direction of the pit 26 and extend in the front-rear direction of the pit 26.

  FIG. 2 is a side view showing the cable guide device 10. In this figure, the AA arrow directional view of FIG. 1 is shown. As shown in FIGS. 1 and 2, the cable guide device 10 includes a winding device 34 mounted on a plurality of front and rear frame members 32. The winding device 34 includes a winder 36 that winds the cable 22 from one end side, and a rotation drive motor 38 that rotates the winder 36 forward and backward.

  The winder 36 is a drum, and includes a cylindrical shaft core portion 40 around which the one end side portion 22 a of the cable 22 is wound, and a pair of flange portions 42 provided on both end sides of the shaft core portion 40. The flange portion 42 is provided in a disk shape so as to project outward from the shaft core portion 40 in the radial direction. The one end portion 22a of the cable 22 does not overlap in the axial direction when viewed from the axial direction of the winder 36 (in the direction orthogonal to the plane of FIG. 2), and is directed radially outward from the axial side of the winder 36. Then, it is wound around the winder 36 so as to form a spiral shape. One end portion (not shown) of the cable 22 is connected to the shaft core portion 40 of the winder 36, and is electrically connected to the electric device of the traveling body 12 via the shaft core portion 40.

  The rotation drive motor 38 switches the rotation direction according to the traveling direction of the traveling body 12 under the control of a motor control unit (not shown). The rotational drive motor 38 rotates the winder 36 so that the cable 22 is unrolled when traveling forward and the cable 22 is wound when traveling backward. Note that an urging member such as a spring may be used instead of the rotation drive motor 38 as a rotational force applying mechanism for rotating the winder 36 forward and backward. When the urging member is used, the urging member is elastically deformed as the traveling body 12 travels, and the winder 36 is rotated by a restoring force with respect to the elastic deformation.

  A first cable guide roller 44 as a first cable guide portion is attached to the base frame 28. A first roller bracket 46 is fixed to the front and rear frame members 32 on the base frame 28, and a first horizontal shaft 48 extending in the lateral direction X is attached to the first roller bracket 46. The first cable guide roller 44 is supported by the first horizontal shaft 48 and is rotatably provided around the first horizontal shaft 48.

  FIG. 3 is an enlarged side sectional view in which a part of the cable guide device 10 is enlarged. The cable guide device 10 includes a guide body 52 that is coupled to the base frame 28 via a first turning shaft 50. A mounting bracket 53 is fixed to the rear portion of the lateral frame member 30 on the rear side of the base frame 28, and the first turning shaft 50 is attached to the lower portion of the mounting bracket 53 so as to protrude downward. The first turning shaft 50 extends in the up-down direction Z.

  The guide body 52 has a first turning frame 54 as a first turning body connected to the base frame 28 via a first turning shaft 50. The first turning frame 54 includes a first frame member 56 as a long material. A first shaft holding portion 58 that holds the first turning shaft 50 is connected to one end portion of the first frame member 56. The first shaft holding portion 58 is provided so as to be rotatable around the first turning shaft 50, and the first turning frame 54 can turn in the circumferential direction Q 1 around the first turning shaft 50 with respect to the base frame 28.

  The guide body 52 has a second turning frame 62 as a second turning body connected to the first turning frame 54 via a second turning shaft 60. A second shaft holding portion 64 that holds the second turning shaft 60 is connected to the other end portion of the first frame member 56. The second shaft holding portion 64 is provided below the first shaft holding portion 58, and the second turning shaft 60 is positioned below the first turning shaft 50 so as to be shifted downward. The second shaft holding portion 64 is rotatably provided around the second turning shaft 60, and the second turning frame 62 can turn in the circumferential direction Q2 around the second turning shaft 60 with respect to the first turning frame 54.

  The second turning frame 62 is configured by combining a plate-like upper frame member 66, a plate-like lower frame member 68, and a plurality of side frame members 70 connecting the upper frame member 66 and the lower frame member 68. . The second pivot shaft 60 is attached to the upper frame member 66 so as to protrude upward. The second turning shaft 60 extends in the up-down direction Z.

  A holding roller 72 as a cable holding portion is attached to the second turning frame 62. A second roller bracket 74 is fixed to the upper frame member 66 in the second revolving frame 62, and a second horizontal shaft 76 extending in the lateral direction X is provided on the second roller bracket 74. The holding roller 72 is supported by the second horizontal shaft 76 and is rotatably provided around the second horizontal shaft 76. A hole 78 is formed in the lower frame member 68 at a position corresponding to the holding roller 72. The holding roller 72 is disposed so as to protrude to the lower side of the second revolving frame 62 through the hole 78. FIG. 4A is a diagram schematically showing the BB line arrow of FIG. A part of the lower portion of the holding roller 72 is disposed in the pit 26.

  FIG. 4 (b) is a diagram schematically showing a CC arrow view of FIG. As shown in FIG. 3 and FIG. 4B, a second cable guide roller 82 as a second cable guide portion is attached to the second turning frame 62. A first vertical axis 84 is attached to the second turning frame 62 with an interval in the lateral direction X on the upper frame member 66. The plurality of first vertical axes 84 extend in the vertical direction Z so as to protrude downward from the upper frame member 66. The second cable guide roller 82 is supported by each of the plurality of first longitudinal axes 84 and is provided to be rotatable around the first longitudinal axis 84. The cable 22 is disposed so as to pass between the plurality of second cable guide rollers 82.

  FIG.4 (c) is a figure which shows schematically the DD arrow of FIG. As shown in FIG. 3 and FIG. 4C, a third cable guide roller 88 as a third cable guide portion is attached to the second turning frame 62. A third horizontal shaft 90 extending in the horizontal direction X is attached to the second turning frame 62 between the side frame members 70 adjacent in the horizontal direction. The third cable guide roller 88 is supported by the third horizontal shaft 90 and is rotatably provided around the third horizontal shaft 90.

  The third cable guide rollers 88 are arranged on both sides in the front-rear direction Y from the second cable guide rollers 82. A pair of third cable guide rollers 88 is disposed on the front side of the second cable guide roller 82 with a space in the vertical direction Z, and the cable 22 is disposed so as to pass between them. One third cable guide roller 88 is disposed on the rear side of the second cable guide roller 82, and the cable 22 is disposed so as to pass through the upper side thereof.

  A plurality of pit guide rollers 92 (hereinafter also simply referred to as pit rollers 92) are attached to the second turning frame 62. A second vertical axis 94 is attached to the second revolving frame 62 with a space in the front-rear direction Y on the lower frame member 68. The plurality of second vertical axes 94 extend in the vertical direction Z so as to protrude downward from the lower frame member 68. The pit roller 92 is supported by each of the plurality of second vertical axes 94 and is provided to be rotatable around the second vertical axis 94. A holding roller 72 is disposed between the plurality of pit rollers 92. The pit roller 92 has an outer diameter slightly smaller than the lateral width of the pit 26 as shown in FIG. The pit roller 92 can roll along the side wall portion of the pit 26 when the holding roller 72 passes along the extending direction of the pit 26.

  As shown in FIG. 3, a scraper 96 is attached to the second revolving frame 62 on the front side of the holding roller 72. When the guide body 52 passes over the pit 26 along the extending direction of the pit 26, the scraper 96 passes through the pit 26 in a section where the cable 22 is not laid. When the scraper 96 passes through the pit 26 forward, foreign matter such as dust in the pit 26 can be discharged to the front side. Thereby, when laying the cable 22 in the pit 26, the cable 22 can be prevented from climbing onto the foreign matter in the pit 26.

  Guide grooves 98 are formed on the outer peripheral surfaces of the holding roller 72 and the first cable guide roller 44 along the circumferential direction, as shown in FIGS. The guide groove 98 is formed in a U shape so as to narrow the groove width toward the groove bottom side, but may be formed in a V shape or the like. The cable 22 is disposed in the guide groove 98, and the movement of the cable 22 in the lateral direction of the holding roller 72 and the first cable guide roller 44 is restricted by engagement with the side surface of the guide groove 98. On the other hand, the outer peripheral surfaces of the second cable guide roller 82 and the third cable guide roller 88 are formed flat in the lateral direction, and the guide groove 98 such as the holding roller 72 is not formed.

  The guide body 52 described above is disposed away from the winder 36 and the first cable guide roller 44 in the rearward direction of the pit 26. Details of this positional relationship will be described later. Further, the guide body 52 can turn around the first turning shaft 50. At this time, the guide body 52 can turn around the first turning shaft 50 so as to be displaced relative to the winder 36 and the first cable guide roller 44. Further, the holding roller 72, the second cable guide roller 82, and the third cable guide roller 88 are provided in a part of the guide body 52, more specifically, in a part of the second turning frame 62 of the guide body 52.

  In the cable guide device 10 described above, as shown in FIG. 2, the one end portion 22 a of the cable 22 is wound around the winder 36, and the other end portion 22 b of the cable 22 is laid in the pit 26. A holding roller 72 is disposed above a part of the other end portion 22 b of the cable 22. When a tension is applied between the one end side portion 22a and the other end side portion 22b of the cable 22, the holding roller 72 comes into contact with a part of the other end side portion 22b from above, so that one end of the other end side portion 22b. The part is held in the pit 26. At this time, a part of the other end portion 22b of the cable 22 is held at a distance from the side wall portions on both lateral sides of the pit 26, as shown in FIG.

  Here, let us consider a case where the cable guide device 10 does not have the guide body 52 including the holding roller 72 and the other end portion 22b of the cable 22 is laid in the curve section 26b of the pit 26 as shown in FIG. In this case, when tension is applied between the one end side portion 22 a and the other end side portion 22 b of the cable 22, the cable 22 is displaced toward the side wall portion of the curve section 26 b of the pit 26 due to the tension. At this time, if the cable 22 comes out of the pit 26, the cable 22 is displaced to the inside (direction P) of the bending of the curved section 26b by the tension, and the cable 22 is within the pit 26 in a wide range of the curved section 26b. There is a risk of getting out of it. In this regard, according to the present embodiment, a part of the other end portion 22b of the cable 22 can be held in the pit 26 by the holding roller 72, so even when the above-described tension is applied, the curve section 26b of the pit 26 The cable 22 can be prevented from coming off over a wide range.

The operation of the cable guide device 10 will be described.
When the traveling body 12 travels along the rail 16, the cable guide device 10 moves in the same direction as the traveling direction of the traveling body 12, and the guide body 52 of the cable guide device 10 is also the same as the traveling body 12 on the pit 26. Move in the direction. When the traveling body 12 travels forward, the cable 22 fed out from the winder 36 is guided by the cable guide rollers 44, 82, 88 and the holding roller 72, and is laid forward in the pit 26. When the traveling body 12 travels backward, the other end portion 22b of the cable 22 laid in the pit 26 is taken up from one end side by the winder 36 while being guided by the cable guide rollers 44, 82, 88. It is done.

  FIGS. 6A and 6B schematically show states when the guide body 52 passes over the straight section 26a and the curved section 26b of the pit 26, respectively. FIG. 6C shows only the holding roller 72 and the second cable guide roller 82 of the guide body 52 of FIG. 6A and 6B mainly show the second turning frame 62 of the guide body 52, and the first turning frame 54 and the turning shafts 50 and 60 are shown in a simplified manner. Moreover, the cable 22 shows only a center line with a dashed-dotted line.

  When the guide body 52 passes over the curve section 26b of the pit 26, the second turning frame 62 of the guide body 52 is brought into contact with the pit roller 92 and the side wall portion of the pit 26 as shown in FIG. Following the bending of the curve section 26b, the vehicle turns in the circumferential direction Q2 around the second turning shaft 60. The first turning frame 54 of the guide body 52 also turns in the circumferential direction Q1 around the first turning shaft 50 following the bending of the curve section 26b. Accordingly, the holding roller 72 rotates so that the central axis L1 of the holding roller 72 approaches the groove width direction axis of the pit 26 below the holding roller 72. This means that the holding roller 72 turns so that the holding roller 72 is oriented in the horizontal plane with respect to a part of the pit 26 through which the holding roller 72 passes.

  However, when the guide body 52 cannot turn following the bending of the curve section 26b of the pit 26, a large load is applied from the pit 26 to the guide body 52 due to the contact between the pit 26 and the pit roller 92, and the guide body 52 and the base frame. 28 may be damaged. In this respect, according to the present embodiment, the guide body 52 turns following the bending of the curve section 26b of the pit 26. Therefore, the load applied to the guide body 52 from the pit 26 can be suppressed, and the guide body 52 and the base frame 28 can be suppressed. Can be prevented from being damaged.

  A part of the cable 22 is wound around the first cable guide roller 44 in a range from the winder 36 to the holding roller 72. When the direction of the holding roller 72 relative to the winder 36 changes due to the turning of the guide body 52 or the like, the first cable guide roller 44 extends from the winder 36 with respect to the direction of the winder 36. The cable 22 is guided so that its orientation in the horizontal plane is constant (or within a predetermined range). This is because the cable 22 extending from the winder 36 is the same as the reference line when a virtual line orthogonal to the central axis L2 (see FIG. 6B) of the winder 36 in the horizontal plane is used as the reference line. It means that the cable 22 is guided so that the angle θ1 (hereinafter referred to as the extending angle θ1) formed in plan view between them is constant (or within a predetermined range).

  As shown in FIGS. 6B and 6C, the second cable guide roller 82 is configured so that the cable 22 extends from the first cable guide roller 44 to the holding roller 72 when the holding roller 72 of the guide body 52 rotates. From one side of both sides. Thereby, when the holding roller 72 turns, the second cable guide roller 82 aligns the orientation of the cable 22 extending from the holding roller 72 toward the winder 36 in the horizontal plane with respect to the direction of the holding roller 72. Thus, the cable 22 is guided. This guides the cable 22 so that the extension angle θ2 of the cable 22 extending from the holding roller 72 toward the second cable guide roller 82 with respect to the central axis L1 of the holding roller 72 is constant (or within a predetermined range). Means that. Thereby, when the holding roller 72 turns, the cable 22 is held so that the extension angle θ2 of the cable 22 is constant (or within a predetermined range), and the cable 22 is difficult to be detached from the holding roller 72.

  As shown in FIG. 3, the third cable guide roller 88 is in contact with the cable 22 from either the upper side or the lower side in the vicinity of both the front and rear sides of the second cable guide roller 82. Accordingly, the third cable guide roller 88 guides the cable 22 so as to maintain the contact position of the cable 22 in the vertical direction with respect to the second cable guide roller 82. Even if a force that moves the cable 22 up and down is applied in the process in which the guide body 52 repeats the turning operation, the contact position of the cable 22 with respect to the second cable guide roller 82 can be stabilized by the third cable guide roller 88.

  However, if the contact position of the cable 22 with respect to the second cable guide roller 82 becomes unstable and the cable 22 rides on the corners of the upper edge and the lower edge of the second cable guide roller 82, the cable 22 is easily detached. In this regard, according to the present embodiment, the contact position of the cable 22 with respect to the second cable guide roller 82 is stabilized by the third cable guide roller 88, and the cable 22 is not easily detached from the second cable guide roller 82. Further, it is difficult for the cable 22 to ride on the corner portion of the second cable guide roller 82.

  Further, in this embodiment, the guide body 52 turns following the bending of the curve section 26 b of the pit 26 by the contact between the pit roller 92 and the pit 26. Therefore, when the guide body 52 turns following the pit 26, the holding roller 72 and the like of the guide body 52 can be prevented from coming into direct contact with the pit 26, so that the breakage of the holding roller 72 and the like can be suppressed.

  In addition, the winder 36 is likely to be large in size so that the long cable 22 can be wound up, and tends to be heavy, including the wound cable 22. Accordingly, when the guide body 52 is turned, if the winder 36 is also turned, the moment of inertia is greatly increased, and the load on the structural portion such as the base frame 28 that supports the guide body 52 is increased. In this respect, since the guide body 52 according to the present embodiment turns so as to be displaced relative to the winder 36, an increase in the moment of inertia can be suppressed. Therefore, it is possible to suppress the burden on the structure portion that supports the guide body 52 and to ensure the durability thereof. In addition, since the winder 36 that tends to be large in size when the guide body 52 is turned does not turn, interference due to the turn of the winder 36 to surrounding structures such as the traveling body 12 can be suppressed.

  Further, as shown in FIGS. 3 and 6B, the second turning frame 62 can turn around the first turning shaft 50 and the second turning shaft 60, and is held by a part of the second turning frame 62. A roller 72 is provided. Therefore, the degree of freedom in displacing the holding roller 72 with respect to the base frame 28 is increased as compared with the case where only one turning shaft is used, and the holding roller 72 and the second turning frame 62 can be moved relative to the base frame 28 accordingly. The range is expanded. For this reason, when the holding roller 72 is displaced following the bending of the curve section 26b of the pit 26, the holding roller 72 is easily displaced without being restricted by the position of the base frame 28. The load applied to can be further suppressed. Further, in order to increase the degree of freedom of the holding roller 72, a rotating mechanism using the pivot shafts 50 and 60 that is easier to realize than a linear motion mechanism such as a linear guide is used. A structure for turning around 50 and 60 can be realized easily and at low cost.

The effect of the above cable guide apparatus 10 is demonstrated.
However, when the first cable guide roller 44 is not provided and the guide body 52 is swung so as to follow the bending of the curve section 26b of the pit 26, the extension angle θ1 of the cable 22 extending from the winder 36 is 0 °. Become bigger. If the extension angle θ1 increases excessively from 0 °, the cable 22 rides on the flange portion 42 of the winder 36. In particular, when the cable 22 is wound around the winder 36 like the present embodiment, the pair of flange portions 42 guide the cable 22 so that the cable 22 is wound around the winder 36. The interval between the flange portions 42 is narrowed. Therefore, when the extending angle θ1 of the cable 22 is greater than 0 °, the cable 22 is more likely to ride on the flange portion 42.

  When the cable 22 is taken up by the winder 36 with the cable 22 riding on the flange portion 42 of the winder 36, the riding position of the cable 22 is displaced in the circumferential direction of the flange portion 42, and There is a possibility that the cable 22 is caught on the component parts. As a result, the cable 22 cannot be properly wound by the winder 36, and in the worst case, the cable 22 may be cut.

  In this regard, according to the present embodiment, the cable 22 is guided by the first cable guide roller 44 so that the extension angle θ1 of the cable 22 extending from the winder 36 is constant. Therefore, it becomes difficult for the cable 22 to ride on the flange portion 42 of the winder 36. As a result, the cable 22 can be easily wound up by the winder 36.

  FIG. 7 is a plan view schematically showing the positional relationship between the traveling body 12 and the cable guide device 10. A virtual line passing through the center position in the front-rear direction between the front wheel 18F and the rear wheel 18R of the traveling body 12 in the lateral direction is a front-rear center line M1, and the center in the front-rear direction between the front-rear center line M1 and the rear wheel 18R. A virtual line passing through the position in the horizontal direction is defined as a reference line M2. At this time, the first cable guide roller 44 is disposed on the front side of the front-rear center line M1, and the guide body 52 is disposed on the rear side of the reference line M2. The reason for this will be explained.

  When the traveling body 12 travels along the straight section 16 a of the rail 16, the winder 36, the first cable guide roller 44, and the holding roller 72 mounted on the base frame 28 are fixed from the wheels 18 of the traveling body 12. The distance La (see FIG. 1) is moved in the horizontal direction. On the other hand, when the traveling body 12 travels on the curve section 16b of the rail 16, the winder 36 and the first cable guide roller 44 keep the distance La away from the wheel 18 of the traveling body 12, as shown in FIG. Become. On the other hand, since the holding roller 72 is displaced following the pit 26, the lateral distance Lb of the traveling body 12 with respect to the wheel 18 is displaced from the distance La. A displacement amount from the distance La to the distance Lb is defined as Lc.

  The displacement Lc increases as the holding roller 72 is closer to the front-rear center line M1 of the traveling body 12, and decreases as the position is farther from the front-rear center line M1. In the present embodiment, in order to reduce the displacement Lc, the first cable guide roller 44 is disposed on one side (front side) in the front-rear direction from the front-rear center line M1, and the guide body 52 is the other in the front-rear direction from the reference line M2. It is arranged on the side (rear side). As a result, the extension angle θ3 of the cable 22 extending from the first cable guide roller 44 toward the holding roller 72 can be reduced, and the cable 22 is less likely to rub due to contact with the side surface of the guide groove 98 of the first cable guide roller 44. The load on the cable 22 can be suppressed. The first cable guide roller 44 may be disposed on the rear side of the front-rear center line M1, and the guide body 52 may be disposed on the front side of the reference line M2.

[Second Embodiment]
FIG. 8 is a side view showing the cable guide device 10 according to the second embodiment, and FIG. 9 is a view schematically showing the EE arrow of FIG. In FIG. 9, the cable 22 is omitted. In FIG. 3, the example in which the guide body 52 can be swung around the first swivel shaft 50 so as to be displaced relative to the winder 36 and the first cable guide roller 44 has been described. In the cable guide device 10 according to the present embodiment, the winder 36 and the first cable guide roller 44 are attached to the guide body 52, and these can be turned around the first turning shaft 50 together with the holding roller 72.

  A first pivot shaft 50 is attached to the base frame 28 so as to protrude upward. The guide body 52 includes a winding device 34 that is coupled to the base frame 28 via the first pivot shaft 50. The guide body 52 has an arm frame 100 that extends rearward from each flange portion 42 of the winder 36. The guide body 52 has a support frame 102 connected to the rear end of the arm frame 100, and the first cable guide roller 44, the holding roller 72, and the pit roller 92 are attached to the support frame 102. The support frame 102 includes a fourth cable guide roller 104 disposed on the lower side of the first cable guide roller 44 with the cable 22 interposed therebetween. The fourth cable guide roller 104 is supported by a fourth horizontal shaft 106 attached to the support frame 102, and is provided to be rotatable around the fourth horizontal shaft 106.

  As mentioned above, although this invention was demonstrated based on embodiment, embodiment shows only the principle and application of this invention. In the embodiment, many modifications and arrangements can be made without departing from the spirit of the present invention defined in the claims.

  The traveling body 12 only needs to travel along the rail 16 laid on the traveling road surface 14, and a crane such as a bridge crane may be used in addition to the transport carriage. The winder 36 has been described as being driven by the rotation drive motor 38 to wind the cable 22 from one end side. In addition, the winder 36 may be urged in the direction of winding the cable 22 by an urging member such as a mainspring spring, and the cable 22 may be wound from one end side by the urging force.

  The guide body 52 includes a first turning frame 54 connected to the base frame 28 via a first turning shaft 50, and a second turning frame 62 connected to the first turning frame 54 via a second turning shaft 60. The example in which the second turning frame 62 turns around the two turning axes 50 and 60 has been described. Besides this. The guide body 52 may be pivoted only around one pivot axis 50 such that the second pivot frame 62 is connected to the base frame 28 via the first pivot axis 50. In addition, the second turning frame 62 of the guide body 52 may be configured to be linearly slidable by a linear motion mechanism such as a linear guide while turning around one turning axis. In this case, one of the first swivel frame 54 and the second swivel frame 62 is connected to the base frame 28 or the first swivel frame 54 via the swivel shafts 50 and 60, and either one of the first swirl frame 54 and the second swivel frame 62 The first turning frame 54 is connected via a linear motion mechanism. Further, the guide body 52 may not include the second cable guide roller 82 and the third cable guide roller 88.

  Although the guide body 52 has been described as being pivotable with respect to the base frame 28, the guide body 52 may not be pivotable. Even in this case, when the guide body 52 passes over the curve section 26b of the pit 26, a rotational force around the vertical axis is applied to the guide body 52 due to contact between the pit roller 92 and the pit 26, or the like. As a result, the holding roller 72 tries to rotate around the vertical axis with respect to the winder 36 with elastic deformation of each of the revolving frames 54 and 62 of the guide body 52. Even at this time, as described above, if the first cable guide roller 44 is provided, an increase in the extension angle θ1 of the cable 22 (see FIG. 6B) can be suppressed, and the cable is connected to the flange portion 42 of the winder 36. 22 is difficult to get on.

  Although the holding roller 72 has been described as the cable holding portion, the cable holding portion may be a guide surface formed on the surface of the guide body 52 in addition to the roller as long as the cable 22 can be guided. Further, although the first cable guide roller 44 has been described as the first cable guide portion, it may also be a guide surface formed on the surface of the base frame 28 or the like. Moreover, although the 2nd cable guide roller 82 was demonstrated as a 2nd cable guide part, the guide surface etc. which were formed in the surfaces, such as the guide body 52, may also be sufficient as this. Further, although the third cable guide roller 88 has been described as the third cable guide portion, it may be a guide surface formed on the surface of the guide body 52 or the like.

In addition, it can be said that the cable guide apparatus 10 which concerns on the above-mentioned embodiment contains the invention as described in the following items.
(item)
A cable guide device that is attached to a traveling body that travels along a rail and is used to guide a cable in a cable pit formed on a traveling road surface,
A winder for winding the cable from one end side;
A base body attached to the traveling body;
A guide body coupled to the base body via a pivot shaft;
A cable holding portion provided in the guide body,
The cable holding portion is held in the cable pit by contacting a part of the other end portion of the cable laid in the cable pit from above,
When the guide body passes on a curve section provided in a part of the extension direction of the cable pit, the guide body can turn around the turning axis following the bending of the curve section. apparatus.

  As described above, the cable pit formed along the rail on the traveling road surface includes the curve section. In the structure described in Patent Document 1, when the guide roller passes over the curve section of the cable pit, the rotational force around the vertical axis is applied to the frame so as to follow the bending of the curve section by the contact between the cable pit and the horizontal roller. Will be added. As a result, the load on the frame and the like is increased, which may adversely affect the durability of the structural portion that supports the guide roller.

  The invention described in the above items has been made in view of such a situation, and the purpose thereof is to ensure the durability of a structural portion that supports a guide roller or the like when a cable is guided in a cable pit including a curved section. It is considered that the present invention is to provide a cable guide device that is easy to do.

DESCRIPTION OF SYMBOLS 10 ... Cable guide apparatus, 12 ... Running body, 14 ... Running road surface, 16 ... Rail, 22 ... Cable, 26 ... Cable pit, 26b ... Curve section, 28 ... Base body (base frame), 36 ... Winding device, 40 ... Axial core part, 42 ... Flange part, 44 ... first cable guide part (first cable guide roller), 50 ... first turning shaft, 52 ... guide body, 54 ... first turning body (first turning frame) 60 ... 2nd turning shaft, 62 ... 2nd turning body (2nd turning frame) 72 ... Cable holding part, 82 ... 2nd cable guide part (2nd cable guide roller), 88 ... 3rd cable guide part (3rd cable) Guide roller), 92... Pit guide roller.

Claims (7)

A cable guide device that is attached to a traveling body that travels along a rail and is used to guide a cable in a cable pit formed on a traveling road surface,
A winder for winding the cable from one end side;
A base body attached to the traveling body;
A guide body for holding a part of the other end portion of the cable in the cable pit,
The guide body is connected to the base body via a pivot axis , and follows the bending of the curve section when passing over a curve section provided in a part of the extension direction of the cable pit. A cable guide device characterized by being capable of swiveling. Provided in a part of the guide body, a part of the other end portion of the cable, by contacting the upper side, to claim 1, further comprising a cable holding portion for holding the cable in the pit The cable guide device described. The cable guide device according to claim 2 , further comprising a first cable guide portion around which a part of the cable is wound in a range from the winder to the cable holding portion. The guide body is
A first swivel body connected to the base body through a first swivel shaft so as to be turnable;
A second swivel body connected to the first swivel body through a second swivel shaft so as to be turnable;
Said cable holding portion cable guide device according to claim 2 or 3, characterized in that provided on a part of the second pivoting member. When the guide body pivots around the pivot axis, the guide body guides the cable so that the cable extending from the cable holding part toward the winder is aligned with the cable holding part. cable guide according to claim 2, characterized in that it comprises a cable guide portion 4. The guide body, to hold the contact position of the cable in the vertical direction with respect to the second cable guide part, according to claim 5, characterized in that it comprises a third cable guide portion for guiding the cable Cable guide device. The cable guide device according to any one of claims 1 to 6 , wherein the guide body includes a pit guide roller that can roll along a side wall portion of the cable pit.

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