JP4795321B2 - Loading device - Google Patents

Description

  The present invention relates to a loading device that is used to feed a load onto a predetermined receiving surface in a production factory, a distribution center, a three-dimensional warehouse, and the like. In particular, the present invention loads a load onto a loading platform of a transportation vehicle. The present invention relates to a loading device suitable for the above.

Conventionally, as this type of loading apparatus, as shown in FIG. 12, a movable base 101 on which a conveyor belt 100 supporting the lower surface of a load M is arranged is reciprocated with respect to a load receiving surface 102 of a transport vehicle. There is something. After a large number of loads M are placed on the conveyor belt 100, the movable base 101 is moved forward to shift onto the load receiving surface 102 of the transport vehicle. FIG. 12 (1) shows the state after the transition.
Next, after the rear end portion of the upper side portion 100a of the conveyor belt 100 is clamped by the clamp mechanism 103, when the movable base 101 is retracted, the lower end portion 100b of the conveyor belt 100 is moved from its front end side as the movable base 101 is retracted. Therefore, the load M is sequentially lowered onto the load receiving surface 102 from the front end portion (FIG. 11 (2)).

However, since the above-described loading apparatus requires the clamp mechanism 103, not only the configuration of the entire apparatus is complicated, but also the load cannot be loaded at the clamp location, and the loading on the movable table 101 is restricted. There is a problem of receiving.
Therefore, the applicant of the present invention has recently proposed a loading device that does not require the clamping mechanism 103 and is not restricted by loading on the movable table 101 (see, for example, Patent Document 1).

Japanese Patent No. 3200383

  As shown in FIG. 13, this load feeding device is configured such that a movable table 112 in which a plurality of conveying rollers 111 are arranged in parallel is arranged on a base 110 so as to be able to reciprocate. Support rollers 113 that roll on the base 110 are arranged at a plurality of locations. Each support roller 113 is supported by an elevating support mechanism 114 so that the support roller 113 can move up and down. When the outer peripheral surface of the support roller 113 comes into contact with the outer peripheral surface of the transport roller 111 at a predetermined position when the support roller 113 is lifted, the transport roller 111 rotates as a unit.

When sending the load onto the load receiving surface, as shown in FIG. 14, the movable platform 112 is advanced toward the load receiving surface while the support roller 113 is lowered by the elevating support mechanism 114. In this state, the support roller 113 is not in contact with the transport roller 111 and the transport roller 111 does not rotate, so that the load moves onto the load receiving surface together with the movable base 112 while remaining stationary.
Next, as shown in FIG. 15, when the support roller 113 is lifted by the lifting support mechanism 114 to bring the outer peripheral surface into contact with the outer peripheral surface of the transport roller 111, and in this state, the movable platform 112 is moved backward from the load receiving surface, Each transport roller 111 rotates in the load feeding direction as the movable table 112 moves backward. As a result, the load on the transport roller 111 is sequentially lowered from the front end portion onto the load receiving surface. In the figure, reference numeral 117 denotes a wedge member that reciprocates by the cylinder mechanisms 115 and 116 of the lifting support mechanism 114 to move the support roller 113 up and down.

  However, since the above-described loading device requires a driving source such as the cylinder mechanisms 115 and 116 as the lifting support mechanism 114, the structure and piping are complicated, and there is a problem that the apparatus is increased in size and cost. is there.

  The present invention has been made paying attention to the above-mentioned problem, and the support roller is caused to react to the reciprocating motion of the movable base so as to be brought into contact with or not to be brought into contact with the transport roller without depending on a driving source such as a cylinder mechanism. Accordingly, an object of the present invention is to provide a loading device that simplifies the structure and prevents an increase in size and cost of the device.

  A load feeding device according to the present invention is for feeding a load onto a load receiving surface, and a plurality of conveying rollers which are supported on a base plate so as to freely reciprocate and support the lower surface of the load are arranged in parallel to be interlocked. And a reciprocating mechanism for reciprocating the movable base between the base and the load receiving surface. The movable table is provided with wheels at a plurality of positions at least at both side positions, and the outer peripheral surface of the movable table rolls in contact with the upper surface of the base table on the surface where the movable table travels below the predetermined conveying roller. A support roller is provided. The support roller is supported so that the shafts at both ends can freely move in the front-rear direction in long holes provided in the frame of the movable table. Each elongated hole moves to a position where the support roller does not contact the outer peripheral surface of the conveyance roller when the movable table moves forward, and moves to a position where the support roller contacts the outer peripheral surface of the conveyance roller when the movable table moves backward. The length in the front-rear direction is set. The support roller is formed such that at least the outer peripheral surface is compressed and deformed between the transport roller and the load receiving surface when the movable table is retracted, and is brought into close contact with the outer peripheral surface of the transport roller so that the transport roller rotates integrally by a frictional force. Has been.

In the above loading device, when a reciprocating mechanism is operated after loading a load on the transport roller of the movable table, the wheel rolls on the base and the movable table moves forward, and the load is received from the base. Transfer to the surface. When the movable base moves forward, the support roller rolls at the rear end position of the long hole portion, that is, the position not in contact with the outer peripheral surface of the transport roller, so the rotation of the support roller is not transmitted to the transport roller, and the transport roller rotates. do not do. Therefore, the load is transferred onto the load receiving surface together with the movable table while remaining stationary.
Next, when the reciprocating mechanism is operated in the reverse direction, the wheels roll on the load receiving surface and the movable table moves backward. When the movable table is retracted, the support roller moves to the front end position of the long hole portion, that is, the position in contact with the outer peripheral surface of the transport roller and rolls at that position, so that the support roller is between the transport roller and the load receiving surface. Due to compression deformation, the outer peripheral surface comes into close contact with the outer peripheral surface of the conveying roller. As a result, the transport roller integrally rotates due to the frictional force with the support roller, and the other transport rollers are also interlocked with this, so that the load on the transport roller is sequentially lowered onto the load receiving surface from the front end of the movable table.

  In the above-described configuration of the present invention, the movable table may be integrally constructed as a whole. Preferably, the movable table includes a movable table for loading and an inclined surface for lowering the load onto the load receiving surface. It is configured by connecting a movable platform for unloading. The movable platform for loading may be one or a plurality of coupled platforms, and the wheels are respectively provided at the positions of the front end and the rear end for each movable platform. Yes.

In a preferred embodiment of the present invention, the support rollers are respectively arranged at positions where the wheels are provided, and in a more preferred embodiment, two support rollers are arranged so as to sandwich the wheels from the front and rear.
According to this embodiment, since the support roller is arranged at a position where the wheels at both side positions are provided, the support roller rolls following the rolling of the wheel, and the load receiving surface is uneven. By being present, the wheel that has ridden on the uneven surface is lifted from the load receiving surface, and even if the support roller at that position does not roll away from the load receiving surface, the other support roller contacts the load receiving surface and rolls. As long as the rotation of the transport roller is not interrupted.

In a preferred embodiment of the present invention, the support roller is an elastic body made of a material such that an outer peripheral surface of a metal roller body is compressed and deformed under a load and is brought into close contact with the outer peripheral surface of the conveying roller by compressive deformation. For example, it is covered with urethane foam or rubber.
In this embodiment, when the movable table is retracted, the support roller moves to the front end position of the long hole portion, that is, the position in contact with the outer peripheral surface of the transport roller, and the elastic body on the outer peripheral surface is located between the transport roller and the load receiving surface. To compress and deform. Due to this compressive deformation, the elastic body comes into close contact with the outer peripheral surface of the conveying roller, so a large frictional force is generated between the supporting roller and the conveying roller, and the conveying roller reliably rotates integrally with the supporting roller without slipping due to the frictional force. To do. The support roller may be formed entirely of an elastic body.

  In the present invention, as described above, the support roller is caused to respond to the reciprocating motion of the movable base, and the support roller is brought into a contact state or a non-contact state with respect to the transport roller without depending on a driving source such as a cylinder mechanism. Compared with the conventional example that requires a driving source such as a cylinder mechanism, the structure can be simplified, and the size and cost of the apparatus can be prevented.

FIG. 1 shows a use state of a loading apparatus according to an embodiment of the present invention, and FIG. 2 shows an appearance and a configuration of the loading apparatus.
The loading device of the illustrated example is for feeding a plurality of loads M onto a load receiving surface 1a of a transport vehicle 1 such as a truck or a container vehicle. However, the present invention is not limited to the transport vehicle 1 and is fixed. The present invention can also be applied to a facility for sending the load M onto the load receiving surface.

  This loading device is supported on a base 2 having a pair of left and right horizontal guide rails 20 and 20 set at the same height as the load receiving surface 1a, and on the left and right guide rails 20 and 20 so as to freely reciprocate. The movable base 5 and a pair of left and right reciprocating mechanisms 7 and 7 for reciprocating the movable base 5 in a direction along the guide rails 20 and 20 (hereinafter, this direction is referred to as “front-rear direction”) are included.

  As shown in FIGS. 1 and 5, the base 2 includes upper and lower frames 21, 21 and lower frames 22, 22 extending in the front-rear direction, left and right upper frames 21, and left and right lower frames 22. It is comprised by the support | pillar 23 provided in between and the said guide rail 20 fixed on each upper frame 21. As shown in FIG. Each of the left and right lower frames 22 is provided with a height adjusting member 24 for making the height position of the guide rail 20 coincide with the height of the load receiving surface 1a of the transport vehicle 1. As a possible configuration, the height of the guide rails 20 and 20 may be adjusted.

  The movable table 5 has a plurality of loading movable tables (hereinafter referred to as “loading table”) 5A, the upper surface of which is a horizontal support surface A for stably supporting the load M; It comprises a movable unloading platform (hereinafter referred to as “unloading platform”) 5B having a similar support surface A and an inclined surface B for smoothly unloading the load M onto the load receiving surface 1a. A necessary number of the bases 5A are connected according to the depth of the load receiving surface 1a, and an unloading base 5B is connected to the front end of the loading base 5A at the head position.

As shown in FIGS. 3 and 4, each loading platform 5 </ b> A is provided with a plurality of conveying rollers 6 that constitute the support surface A, and each of the positions of the front end portion and the rear end portion on both sides has a base. A short cylindrical wheel 3 that travels between the guide rail 20 of the base 2 and the load receiving surface 1a of the transport vehicle 1 is disposed, and two wheels 3 at each position are sandwiched from the front and rear. Short cylindrical support rollers 4 and 40 are arranged in parallel with the wheels 3, respectively.
The unloader 5B includes a plurality (four in the illustrated example) of conveying rollers 60 for configuring the support surface A and a plurality (three in the illustrated example) of conveying rollers 61 for configuring the inclined surface B. The short-wheel-shaped wheel 3 and two short-cylindrical support rollers 4 and 40 are parallel to each other so as to sandwich the wheel 3 at each position from the front and rear at positions below the support surface A on both sides. In addition, one long rod-shaped body 30 a whose both ends function as wheels 30, 30 is disposed at a position below the inclined surface B.

  The movable platform 5 comprising the loading platform 5A and the unloading platform 5B has a leading unloading platform that moves forward when the wheels 3, 30 roll on the guide rails 20 and 20 and the load receiving surface 1a. It is supported on the guide rails 20 and 20 or on the load receiving surface 1a so as to freely reciprocate so that the front end of 5B reaches the inner position on the load receiving surface 1a. In addition, in order to improve the running stability of the movable platform 5, the number of installed wheels 3 and 30 may be increased.

Each loading platform 5A and unloading platform 5B has a rectangular planar shape as a whole by side frames 11 and 11 on both sides along the length direction and frame 12 along the width direction. A plurality of conveying rollers 6 constituting a support surface A are provided between the side frames 11, 11 facing each loading platform 5A, and a support surface A is provided between the side frames 11, 11 opposing the unloading platform 5B. Four conveying rollers 60 constituting the structure and three conveying rollers 61 constituting the inclined surface B are provided.
The transport rollers 6, 60, 61 are arranged in parallel in a direction orthogonal to the front-rear directions a, b in which the movable base 5 reciprocates. The shaft portions at both ends of the transport rollers 6, 60, 61 are transported. The upper part of the outer peripheral surface of the roller 6 protrudes from the upper surface of the side frame 11 so as to form a support surface A and an inclined surface B, and is supported rotatably on each side frame 11 on both sides.
In this embodiment, the loading table 5A and the loading table 5A and the loading table 5A and the unloading table 5B are connected in the front-rear direction via the joint portion 9, but are movable. The platform 5 may be one in which a loading platform 5A and an unloading platform 5B are integrally formed.

  In this embodiment, each wheel 3 having a short cylindrical shape has a length of about 20 cm, while the width of the movable base 5 is about 2 m, and is fixed as shown in FIG. A metal wheel main body 33 having a cylindrical shape is supported on the shaft 31 via bearings 32 and 32 at both ends, and the outer peripheral surface of the wheel main body 33 is covered with an elastic body 34 made of urethane foam. It has been done. One end of the fixed shaft 31 is fixed to the one side frame 11 and the other end is fixed to the intermediate frame 13 provided inside the side frame 11 with screws.

  The rod-shaped body 30 a that causes both ends to function as the wheels 30, 30 has a length corresponding to the width of the movable table 5. The shaft portions 35, 35 at both ends are rotatably supported by bearings 36 attached to the side frames 11, 11 on both sides. The wheels 30, 30 at both ends are configured by elastic members 37 made of urethane foam around the outer peripheral surfaces of both ends of the rod-shaped body 30a.

Each conveyance roller 6 of each loading platform 5A and each conveyance roller 60, 61 of the unloading platform 5B have shaft portions at both ends protruding to the outside of the side frame 11, and transmission pulleys 62 are mounted on the protruding ends. Yes.
Each transport roller 6 of each loading platform 5A is connected two by two by passing an endless belt 63 between two transmission pulleys 62, 62 on either side. The pair of transmission pulleys 62 and 62 around which the endless belt 63 is stretched are shifted one by one on both sides, and thereby all the transport rollers 6 are linked together. For example, assuming that the first transport roller 6 and the second transport roller 6 are connected by the endless belt 63 with a pair of transmission pulleys 62 and 62 on one side, the second transport roller 6 and the third transport roller 6 are connected. The roller 6 is a pair of transmission pulleys 62, 62 on the other side and is connected by an endless belt 63, whereby all the transport rollers 6 are connected in series and interlocked for each loading platform 5A. .

In the unloading base 5B, the four conveying rollers 60 constituting the support surface A are hung with an endless belt 64 between the transmission pulleys 62 and 62 as a pair while sequentially shifting the positions on both sides. Each of them is connected. Further, the three conveying rollers 61 constituting the inclined surface B are also connected to each other by passing an endless belt 65 between the transmission pulleys 62 and 62 as a pair while sequentially shifting the positions on both sides. The outer peripheral surfaces of the wheels 30 at both ends are in close contact with the conveying roller 61 at the rear end position, whereby the conveying roller rotates integrally with the wheel 30 and the other conveying rollers 61 are interlocked with this.
A toothed pulley is used for each transmission pulley 62, and a toothed flat belt is used for the endless belts 63, 64, and 65, so that a gap between the transmission pulley 62 and the endless belts 63, 64, and 65 can be obtained. Slip is prevented from occurring.

  As shown in FIGS. 3 and 6, the joint portion 9 is formed between the side frames 11 and 11 of the front and rear loading platforms 5A and 5A, the side frame 11 of the loading platform 5A, and the side of the unloading platform 5B. Connecting plates 90 are respectively straddled between the frames 11, brackets 91 project outwardly from the outer surfaces of the connecting plates 90, and roller holders 92 are pivotally supported at the respective ends so as to freely swing within a horizontal plane. In addition, a pair of front and rear guide rollers 93 and 93 are supported on a roller holder 92 so as to freely rotate. Each joint portion 9 is provided with one free roller 94.

  As shown in FIGS. 2 and 6, guide plates 14 and 14 fixed to the base 2 via support members 15 are provided on both sides of the movable base 5 in parallel with the guide rail 20. . When the movable table 5 reciprocates, the guide rollers 93 and 93 come into contact with the guide plates 14 and 14 to correct the moving direction of the movable table 5.

  The reciprocating mechanisms 7 are respectively provided on both sides of the base 2 and, as shown in FIGS. 2, 3, and 5, via a drive sprocket wheel 70 that rotates in a horizontal plane and a speed reduction mechanism 71. Along with the motor 72 for rotating the driving sprocket wheel 70, a pair of driven sprocket wheels 74, 74 supported by a holder 73 attached to the base 2 and rotating in a horizontal plane, and the side frame 11 of the movable base 5. The roller chain 75 is stretched. Both ends of each roller chain 75 are connected and fixed to chain bolts 76 provided at the front end of the leading unloading base 5B and the rear end of the last loading base 5A. The portion is meshed with each driven sprocket wheel 74, 74 from the inside to make a detour outward, and is meshed with the drive sprocket wheel 70 from the outside.

  When the drive sprocket wheel 70 is rotated in the forward direction (direction indicated by arrow c in FIG. 3) by the motor 72, the roller chain 75 is driven in one direction, so that the movable platform 5 is in the direction indicated by arrow a in FIG. To move forward. When the drive sprocket wheel 70 is rotated in the reverse direction (the direction indicated by the arrow d in FIG. 3) by the motor 72, the roller chain 75 is driven in the opposite direction, so that the movable platform 5 is moved in the direction indicated by the arrow b in FIG. Transition (retreat).

  The support rollers 4 and 40 are arranged at positions where the wheels 3 of the respective loading platforms 5A and unloading platforms 5B are provided so as to sandwich the wheels 3 from the front and rear in parallel with the wheels 3. One support roller 4 is below the predetermined transport roller 6, the other support roller 40 is below the adjacent transport roller 6, and the outer peripheral surface is on the upper surface of the guide rail 20 of the base 2 or the load support surface 1A. It is deployed to roll in contact.

  As shown in FIG. 8, each support roller 4, 40 has a rotating shaft 42 integrally formed on both end faces of a metal roller body 41, and the outer peripheral surface of the roller body 41 is covered with an elastic body 43 made of urethane foam. Configured. The elastic body 43 may be made of a material other than urethane foam as long as it has a property of being compressed and deformed in response to a load and intimately contacting the outer peripheral surface of the transport rollers 6 and 60 by compressive deformation.

  As shown in FIGS. 8 and 9, one rotating shaft 42 of each of the support rollers 4, 40 is a length established at a position corresponding to the two conveying rollers 6 at the above-described end position of the side frame 11. The other rotary shaft 42 is supported by the holes 16 and 17 so as to be freely movable in the front-rear direction by the long holes 18 and 19 provided in the intermediate frame 13 so as to face the long holes 16 and 17. Has been. 9 shows the configuration of the long hole portions 16 and 17 in the loading table 5A, the long hole portions 16 and 17 in the unloading table 5B have the same configuration, and the illustration and description thereof are omitted here. To do.

Each of the long hole portions 16 to 19 is formed in a horizontally long rectangular shape, and the one long hole portion 16 and 18 facing each other is as shown in FIG. When one support roller 4 moves to a position not in contact with the outer peripheral surface of the transport roller 6 and the movable base 5 moves backward, the support roller 4 moves to the outer periphery of the transport roller 6 as shown in FIGS. The position and the length in the front-rear direction are set so as to move to a position in contact with the surface. When the movable base 5 moves forward, the other long hole portions 17 and 19 facing each other move to a position where the other support roller 40 does not contact the outer peripheral surface of the transport roller 6 (FIG. 9 (1)). The position and the length in the front-rear direction are set so that the support roller 40 moves to a position in contact with the outer peripheral surface of the transport roller 6 (FIGS. 9 (2) (3)).
Each of the support rollers 4 and 40 is such that the elastic body 43 on the outer peripheral surface is compressed and deformed between the transport roller 6 and the load receiving surface 1 a when the movable table 5 is retracted, and is in close contact with the corresponding outer peripheral surface of the transport roller 6. Thus, the conveying roller 6 rotates integrally with the supporting rollers 4 and 40 by the frictional force between the elastic body 43 of each supporting roller 4 and 40 and the outer peripheral surface of the conveying roller 6 facing the elastic body 43.

Next, the operation of the above embodiment will be described.
The load M sent from the end of the production line is placed on the transport roller 6 of the movable table 5 as shown in FIG. 10A using a forklift or the like.

  Next, when the reciprocating mechanism 7 is operated, as shown in FIG. 10 (2), each wheel 3 of each loading platform 5 A and each wheel 3, 30 of the unloading platform 5 B are guided rails 20 of the base 2. , 20 to move the movable table 5 forward, and transfer from the base 2 onto the load receiving surface 1a of the transport vehicle 1. When the movable table 5 moves forward, one support roller 4 at each position on both sides rolls at the rear end position of the long hole portions 16, 18, that is, at a position not in contact with the outer peripheral surface of the predetermined transport rollers 6, 60. The support roller 40 rolls at the rear end position of the long hole portions 17 and 19, that is, at a position where it does not contact the outer peripheral surface of the adjacent transport rollers 6 and 60. The transfer rollers 6 and 60 do not rotate (see FIG. 9 (1)). Therefore, the load M is transferred onto the load receiving surface 1a of the transport vehicle 1 together with the movable table 5 in a stationary state.

  Next, when the reciprocating mechanism 7 is operated in the reverse direction, the wheels 3 and 30 of the loading table 5A and the unloading table 5B roll on the load receiving surface 1a, and the movable table 5 moves backward. When the movable table 5 is retracted, one support roller 4 at each position on both sides moves toward the front end position of the long hole portions 16, 18, that is, the position in contact with the outer peripheral surface of the predetermined transport rollers 6, 60. The other support roller 40 moves toward the rear end position of the long hole portions 17 and 19, that is, the position in contact with the outer peripheral surface of the rear adjacent transport rollers 6 and 60 (see FIG. 9B).

  When one support roller 4 reaches the front end position of the long hole portions 16 and 18 and rolls at that position, and the other support roller 40 reaches the front end position of the long hole portions 17 and 19 and rolls at that position. (Refer to FIG. 9 (3)). As a result of the elastic body 43 on the outer peripheral surface of the support rollers 4 and 40 being compressed and deformed between the transport rollers 6 and 60 and the load receiving surface 1a, the elastic body 43 is transported by this compressive deformation. A large frictional force is generated between the support rollers 4, 40 and the transport rollers 6, 60 in close contact with the outer peripheral surfaces of 6, 60. Due to the frictional force, the transport rollers 6 and 60 are surely rotated integrally with the support rollers 4 and 40 without slipping, and the other transport rollers 6 and 60 are interlocked with this, and further, the inclined surface B of the unloading table 5B is formed. Since the three transport rollers 61 that rotate integrally with the wheel 30, the load M on the transport roller 60 is transferred to the transport rollers 60, as shown in FIGS. 10 (3) and 11 (1) to (3). In response to the frictional force generated by the rotation of 61, the loading surface 1a is sequentially lowered from the inclined surface B of the unloading table 5B.

  When the movable table 5 is retracted, the support rollers 4 and 40 are disposed at the positions where the wheels 3 are provided. Therefore, the support rollers 4 and 40 roll following the rolling of the wheels 3. Even if the load receiving surface 1a has irregularities, the wheel 3 riding on the irregularities floats up from the load receiving surface 1a, and the support rollers 4 and 40 at that position do not roll away from the load receiving surface 1a. As long as the other support rollers 4 and 40 roll in contact with the load receiving surface 1a, the rotation of the transport rollers 6 and 60 is not interrupted.

  As described above, the transport roller 6, 60, 61 is rotated in the load feeding direction while the movable table 5 is moved backward to send the load M onto the load receiving surface 1a, so that the load M can be received without causing collapse of the load. Can be lowered onto 1a. Further, when the movable table 5 is moved backward, the transport rollers 6, 60, 61 are rotated by the frictional force between the support rollers 4, 40, so that a rotational drive source for rotating the transport rollers 6, 60, 61 is provided. It is unnecessary.

  In addition, although this Example is an example which applied this invention to the automatic loading equipment for sending the load M on the cargo receiving surface 1a of the transport vehicle 1, this invention is not limited to this kind of use. Absent. For example, in a three-dimensional warehouse, the load delivery device of the present invention is mounted on an elevator that reciprocates between warehouses on each floor, and can also be implemented in equipment that delivers stored items to the storage section on each floor. There is a form.

It is a side view which shows the loading apparatus which is one Example of this invention in use condition. It is the perspective view which abbreviate | omitted and showed the intermediate part of the loading apparatus of FIG. It is a top view of the loading apparatus of FIG. It is a side view of the loading apparatus of FIG. It is sectional drawing which follows the CC line of FIG. It is sectional drawing which follows the DD line | wire of FIG. It is a longitudinal cross-sectional view of a wheel. It is a longitudinal cross-sectional view of a support roller. It is a side view which shows operation | movement of the support roller accompanying the reciprocation of a loading platform. It is explanatory drawing which shows loading operation. It is a side view which shows unloading operation | movement. It is explanatory drawing which shows operation | movement of the conventional cargo delivery apparatus. It is a side view which shows the structure of the loading apparatus shown by patent document 1. FIG. It is a side view which shows operation | movement of the loading apparatus of FIG. It is a side view which shows operation | movement of the loading apparatus of FIG.

Explanation of symbols

1a Load receiving surface 2 Base 3 Wheels 4, 40 Support roller 43 Elastic body 5, 5A, 5B Movable base 6, 60, 61 Conveying roller 7 Reciprocating mechanism

Claims (5)

A load feeding device for feeding a load onto a load receiving surface, and a movable table in which a plurality of transport rollers that are supported reciprocally on a base and support the lower surface of the load are arranged in parallel to be interlocked with each other; A reciprocating mechanism that reciprocates the movable table between the base and the load receiving surface, and the movable table is provided with wheels at a plurality of positions at least at both side positions, and a predetermined conveying roller. The support roller is arranged so that the outer peripheral surface rolls in contact with the upper surface of the base on the surface on which the movable base travels at the lower position of
The support rollers are supported so that the shafts at both ends can freely move in the front-rear direction in elongated holes provided in the frame of the movable table, and each elongated hole is supported by the outer periphery of the transport roller when the movable table is advanced. The length in the front-rear direction is set so that the support roller moves to a position in contact with the outer peripheral surface of the transport roller when the movable table is retracted. A loading device formed such that at least an outer peripheral surface is compressed and deformed between a conveying roller and a load receiving surface and is brought into close contact with the outer peripheral surface of the conveying roller so that the conveying roller is integrally rotated by a frictional force.   The movable platform is formed by connecting a movable platform for loading and a movable platform for unloading with an inclined surface for unloading the load onto the load receiving surface, and the movable platform for loading has a front end portion. The load feeding device according to claim 1, wherein the wheels are respectively provided at positions of the rear end portion.   The load feeding device according to claim 1, wherein the support roller is disposed at a position where the wheel is provided.   The said support roller is a loading apparatus described in any one of Claims 1-3 arrange | positioned 2 each so that a wheel may be pinched | interposed from the front and back in the position in which the said wheel is provided.   The support roller is covered with an elastic body made of a material such that an outer peripheral surface of a metal roller body is compressed and deformed by a load and is in close contact with the outer peripheral surface of the transport roller by compressive deformation. The loading device described in any of the above.

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