JP2012218855A - Cargo feeding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent generation of loud noise during unloading operation, to prevent occurrence of any load collapse caused by shocks, and to prevent any space from being formed between a cargo and a back wall part of a container or the like or between cargoes.SOLUTION: A cargo feeding apparatus has an unloading support mechanism for supporting the unloading operation of a cargo M on a conveying roller from a front end of a movable table 5 onto a cargo receiving face. In the cargo unloading support mechanism, guide mechanisms 90a, 90b are arranged at the front end of the movable table 5. The guide mechanisms 90a, 90b have a right and left rocking plate 95 supported in a collapsible manner so as to be collapsed forward, and a spring 99 for urging the rocking plate 95 in an upright posture. A feed roller 96 is horizontally provided between upper ends of the right and left rocking plates 95 at the position lower than the conveying roller. A guide plate 98 projecting forward is provided parallel to the feed roller 96 at the position in a vicinity of the front side of the feed roller 96.

Description

  The present invention relates to a load feeding device that is used to feed a load onto a predetermined receiving surface in a production factory, a distribution center, a three-dimensional warehouse, etc. In particular, the present invention relates to a load on a loading platform or a container of a transport vehicle. The present invention relates to a loading device suitable for loading and loading.

  Conventionally, as shown in FIG. 13 (1), this type of load feeding device is configured such that a movable table 112 in which a plurality of conveying rollers 111 are arranged in parallel is reciprocally movable on a base 110. Under the movable table 112, support rollers 113 that roll on the base 110 are arranged at a plurality of positions on both sides. Each support roller 113 is supported by a displacement mechanism (not shown) so that the support roller 113 can be displaced vertically. When the support roller 113 is displaced upward and the outer peripheral surface of the support roller 113 is pressed against the outer peripheral surface of the transport roller 111 at a predetermined position, The conveying roller 111 integrally rotates in the opposite direction to the support roller 113 by the frictional force between them (see, for example, Patent Document 1).

  For example, when loading and loading the load M onto the load receiving surface 115 in the container of the transport vehicle, the movable table 112 is driven with the support roller 113 lowered by the displacement mechanism to advance the load receiving surface 115 (FIG. 13). (2)). In this state, the support roller 113 and the transport roller 111 are not in contact with each other, and the transport roller 111 does not rotate. Therefore, the load M moves onto the load receiving surface 115 together with the movable base 112 while remaining stationary. When the load M reaches a predetermined position in front of the back wall portion 116 in the container, the movable platform 112 stops moving forward.

  Next, the support roller 113 is displaced upward by the displacement mechanism, and the outer peripheral surface of the support roller 113 is brought into pressure contact with the outer peripheral surface of the transport roller 111. When the movable table 112 moves backward on the load receiving surface 115 in this pressure contact state, the transport rollers 111 rotate simultaneously in the direction in which the load M is fed as the movable table 112 moves backward. Since the load M on the transport roller 111 is sent forward at the same speed as the retraction speed of the movable table 112, the load M is stopped at a fixed position on the load receiving surface 115, and the movable table 112 is moved with the retraction of the movable table 112. Are sequentially lowered onto the load receiving surface 115 from the front end portion of FIG. 13 (3).

  An inclined guide mechanism 114 for smoothly dropping the load M on the transport roller 111 onto the load receiving surface 115 is provided at the front end of the movable table 112. As shown in FIG. 14, the inclined guide mechanism 114 includes a guide roller 117 that is rotatably supported, and a guide plate 118 that extends obliquely downward from the vicinity of the front side of the guide roller 117. When the load M is lowered onto the load receiving surface 115, the load M protrudes from the front end of the movable base 112 and tilts as shown by a one-dot chain line in the figure, and the lower end of the front end portion of the load M is placed on the load receiving surface 115. The upper end portions abut against the back wall portion 116 of the container. Thereafter, the lower surface of the load M is supported by the guide roller 117 while the load M is tilted. Finally, the rear end portion of the lower surface of the load M slides down the guide plate 118 and is lowered onto the load receiving surface 115.

Japanese Patent No. 3200383

  In the inclined guide mechanism 114 configured as described above, when the rear end of the lower surface of the load M slides down the guide plate 118, the load M is forward-fed at the moment of downhill if the machine height is high. There is almost no gap between the portion 116 and between the load M and the load M, but when landing on the load receiving surface 115, a large collision noise is generated, and the impact may cause collapse of the load. When the aircraft height is lowered to suppress the generation of this sound, the forward feeding action of the load M during downhill is reduced, and a gap s is formed between the back wall 116 of the container and between the load M and the load M. For this reason, not only the load amount of the container load is reduced, but also the load M moves during transportation, causing a collapse of the load. In order to prevent this, in addition to the load-feeding operation by the load-feeding device, a manual preloading operation of the load is required, so that the efficiency of the loading operation is greatly reduced, and the work load on the operator is increased.

  The present invention has been made paying attention to the above-mentioned problem, and when unloading the load from the movable platform onto the load receiving surface, it is possible to gently unload the load while the load is being forwarded. An object of the present invention is to provide a load feeding device that does not generate a loud sound, prevents the collapse of a load due to an impact, and does not generate a gap between a back wall portion of a container or the like or between a load and a load.

  A load feeding device according to the present invention includes a movable base that can move back and forth on a load receiving surface for feeding loads, a plurality of conveying rollers that are horizontally arranged on the movable base in the front-rear direction, and the movable base. Supports the roller drive mechanism that drives the transport roller so that the load on the transport roller is forward-fed at a speed that matches the retreating speed, and the operation to lower the load on the transport roller from the front end of the movable base onto the load receiving surface. The unloading support mechanism is configured by disposing at least one guide mechanism at the front end portion of the movable table. The guide mechanism includes left and right swing plates that are supported in a tiltable manner so as to be able to fall forward, and a spring that biases the swing plate to be in an upright posture. Between the upper end portions of the plates, a feed roller is horizontally provided at a position lower than the conveying roller, and a guide plate protruding forward is provided in parallel with the feed roller at a position near the front side of the feed roller.

  In the above-described load feeding device, after a load is stacked on the transport roller of the movable table, when the movable table is driven to advance on the load receiving surface, the load is sent to the load receiving surface together with the movable table in a stationary state. When the load reaches a position in front of the back wall of a container or the like, the movable platform stops moving forward. Next, when the movable table is moved backward on the load receiving surface, the roller driving mechanism drives the conveyance roller so that the load on the conveyance roller is forward-fed at a speed that matches the reverse speed of the movable table. As a result of the load M on the transport roller being forwarded at a speed that matches the retreating speed of the movable table, the load stops at a fixed position on the load receiving surface, and from the front end of the movable table as the movable table moves backward. Sequentially lowered onto the receiving surface.

  At the time of unloading, when more than half of the load protrudes from the front end of the movable platform, the load tilts, the upper end of the front end of the load hits the back wall of the container, etc. Supported by a roller. When the rear end of the lower surface of the load passes over the feed roller and moves onto the guide plate, the load of the load is applied to the guide plate and the swinging plate falls forward to a forward leaning posture, and the load slides down the inclined guide plate. . As a result of the forward movement of the load due to the rotational displacement when the swinging plate is tilted forward, the load is packed forward and the inclination is reduced, and thereafter, the load is forwarded while sliding down the guide plate and on the load receiving surface. It is taken down quietly.

  In the above-described configuration of the present invention, one guide mechanism may be provided at a position corresponding to the load conveyance path on the movable table, but it is preferable to provide a pair of left and right guide mechanisms.

  In a preferred embodiment of the present invention, the guide mechanism further includes a drive roller that is rotatably supported so as to roll on a load receiving surface, and the feed roller is caused by a frictional force with the drive roller. The outer peripheral surface is pressed against the drive roller so as to rotate integrally in the reverse direction.

  According to this embodiment, since the feed roller is supported on the drive roller when the swinging plate is in the standing posture, the load of the load applied to the feed roller is stably supported by the feed roller and the drive roller. It can withstand a considerable load. In addition, since the feed roller rotates in the direction to forward the load, the frictional force acting between the lower surface of the load and the feed roller prevents the load from being pushed back. When the rear end smoothly passes over the feed roller and the load is transferred onto the guide plate, the rotational force of the feed roller boosts the load.

  In a further preferred aspect of the present invention, the feed roller is positioned rearward with respect to a fulcrum position of the swing plate when the swing plate is in a standing posture.

  According to this embodiment, when the lower surface of the inclined load is supported by the feed roller, the feed roller is slightly tilted backward, so that the swing plate is against the load of the load acting on the feed roller. It is difficult to fall forward, and the standing posture of the swing plate is stably maintained until the rear end of the lower surface of the load gets over the feed roller and moves onto the guide plate.

  According to the present invention, when unloading, the load is pre-packed and gently lowered on the load receiving surface while the inclination posture is corrected, so that a large landing sound is not generated and there is a risk of collapse of the load due to impact. Nor. In addition, since there is no gap between the back wall of the container or the like or between the load and the load, the load capacity of the load does not decrease, and the load may move during transportation and cause collapse. Nor. Furthermore, since no manual pre-packing work is required, the loading work can be performed efficiently, and the work load on the operator can be reduced.

It is a side view which shows the use condition of the load feeding apparatus which is one Example of this invention. 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 AA line of FIG. It is a side view which shows operation | movement of the support roller accompanying the reciprocation of a loading platform. It is a longitudinal cross-sectional view of a support roller. It is a top view which shows the structure of an unloading assistance mechanism. It is a front view which shows the structure of the guide mechanism of an unloading assistance mechanism. It is a side view which expands and shows the structure of the guide mechanism of an unloading assistance mechanism. It is explanatory drawing which shows load sending operation. It is a side view which shows unloading operation | movement. It is explanatory drawing which shows the load feeding operation | movement by the conventional load feeding apparatus. It is a side view which shows the unloading operation | movement by the conventional load feeding apparatus.

FIG. 1 shows a use state of a load feeding device according to an embodiment of the present invention.
The load feeding device of the illustrated example is used to load and load a plurality of loads M into a container or a loading platform of a transport vehicle 1 such as a container car or a truck. It can also be used for applications such as loading and loading a load M on the floor surface.

  As shown in FIGS. 1 and 2, the illustrated load feeding device has a pair of left and right horizontal guides set at the same height as the floor surface in the container of the transport vehicle 1 (hereinafter referred to as “load receiving surface 1a”). The base 2 having the rails 20, 20, the movable base 5 supported on the left and right guide rails 20, 20 so as to freely reciprocate, and the direction of the movable base 5 along the guide rails 20, 20 (hereinafter referred to as this direction). A pair of left and right reciprocating mechanisms 7 and 7 that reciprocate in the “front-rear direction”.

  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 of the guide rail 20 coincide with the height of the load receiving surface 1 a of the transport vehicle 1.

  The movable table 5 has a horizontal support surface A for stably supporting the load M on the upper surface, and a plurality of loading tables 5A and 5A are connected in a necessary number according to the depth of the load receiving surface 1a. Configured. An unloading support mechanism 9 (details will be described later) for smoothly unloading the load M on the loading platform 5A onto the load receiving surface 1a is provided at the front end of the leading loading platform 5A.

As shown in FIGS. 3 and 4, each loading platform 5 </ b> A is provided with a plurality of transport rollers 6 constituting the support surface A in parallel along the front-rear direction. Short cylindrical wheels 3 running on the guide rails 20 of the base 2 and the load receiving surface 1a of the transport vehicle 1 are disposed at the positions of the front end and the rear end of both sides of each loading platform 5A. In addition, two short cylindrical support rollers 4 and 40, which will be described later, are disposed at the positions of the wheels 3, respectively. Although not shown, each wheel 3 has a structure in which a metal cylinder is supported on a fixed shaft so as to freely rotate, and its outer peripheral surface is covered with an elastic body such as urethane foam.
The movable table 5 is configured such that each wheel 3 described above of each loading platform 5A rolls on the guide rails 20 and 20 and the load receiving surface 1a of the transport vehicle 1, so that the front end is the back of the back on the load receiving surface 1a. It can advance to the position of the wall 1b.

  Each loading platform 5 </ b> A is formed in a rectangular planar shape by the side frames 11, 11 on both sides and the front and rear frames 12, 12, and constitutes a support surface A between the opposed side frames 11, 11. A plurality of transport rollers 6 are provided. Each conveyance roller 6 is arranged in parallel in the direction orthogonal to the front-rear directions a and b in which the movable base 5 reciprocates. The shafts at both ends of each transport roller 6 are supported rotatably on each side frame 11 on both sides so that the upper part of the outer peripheral surface of the transport roller 6 protrudes from the upper surface of the side frame 11 to form the support surface A. Has been. In this embodiment, the movable table 5 is formed by connecting the front and rear loading platforms 5A and 5A via the joint portion 51, but the movable table 5 may be a series.

  As for each conveyance roller 6 of each loading platform 5A, the shaft part of both ends protrudes to the outer side of the side part frame 11, and the transmission pulley 62 is each mounted | worn with the protrusion end. Each conveying roller 6 of each loading platform 5A is connected two by two with a belt 63 being stretched between two transmission pulleys 62, 62 on either side. The pair of transmission pulleys 62 and 62 around which the belt 63 is stretched are shifted one by one on both sides, and thereby all the transport rollers 6 are linked together. In this embodiment, in order to suppress the occurrence of slip between the transmission pulley 62 and the belt 63, a toothed pulley is used for each transmission pulley 62 and a toothed flat belt is used for the belt 63.

  As shown in FIG. 3, the joint portion 51 has a connecting plate 52 straddled between the side frames 11, 11 of the front and rear loading platforms 5 </ b> A, 5 </ b> A, and a bracket 53 is attached to the outer surface of each connecting plate 52. Projecting outwardly, the roller holders 54 are pivotally supported at their respective ends so as to freely swing within a horizontal plane, and a pair of front and rear guide rollers 55, 55 are rotatably supported by the roller holder 54. is there. Each joint portion 51 is provided with one free roller 56 at the same height as the conveying roller 6.

  As shown in FIG. 2, 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 rails 20. When the movable table 5 swings or snakes during reciprocation, the guide rollers 55 and 55 come into contact with the guide plates 14 and 14 to correct the moving direction of the movable table 5.

  The reciprocating mechanism 7 is provided on both sides of the base 2, and a drive sprocket wheel 70 that rotates in a horizontal plane, a motor 72 that rotates the drive sprocket wheel 70 via a speed reduction mechanism 71, and the base 2 A pair of driven sprocket wheels 74, 74 that are supported by a holder 73 attached to the base plate and rotate in a horizontal plane, and a roller chain 75 that is stretched along the side frame 11 of the movable table 5. . Both ends of each roller chain 75 are connected and fixed to chain bolts 76 provided at the front end portion of the leading loading platform 5A and the rear end portion of the last loading platform 5A. An intermediate portion of each roller chain 75 meshes with each driven sprocket wheel 74, 74 from the inside to make a detour outward, and meshes with the drive sprocket wheel 70 from the outside.

  When the drive sprocket wheel 70 is rotated in the forward direction (the direction indicated by the 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 moved in the direction indicated by the arrow a in FIG. Transition (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 loading platforms 5A are provided so as to sandwich the wheels 3 from the front and rear in parallel with the wheels 3. As shown in FIG. 6, 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 of the guide rail 20 is the base 2. And are arranged so as to roll in contact with the upper surface of the load receiving surface 1a.

  As shown in FIG. 7, each support roller 4, 40 is formed by integrally forming a rotating shaft 42 on both end surfaces of a metal roller body 41. The entire outer peripheral surface of the roller body 41 is covered with an elastic body 43 such as urethane foam, and the elastic body 43 can be brought into close contact with the outer peripheral surface of the conveying roller 6 by compressive deformation.

  One rotating shaft 42 of each support roller 4, 40 rotates in the other direction in the long hole portions 16, 17 opened at the positions corresponding to the two conveying rollers 6 at the end positions of the side frame 11. The shaft 42 is supported by the long hole portions 18 and 19 formed in the intermediate frame 13 so as to face the long hole portions 16 and 17, respectively, so as to be freely movable in the front-rear direction.

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. One support roller 4 moves to a position not in contact with the outer peripheral surface of the transport roller 6, and when the movable table 5 is retracted, the support roller 4 is moved 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. The other long hole portions 17 and 19 facing each other move to a position where the other support roller 40 is not in contact with the outer peripheral surface of the conveying roller 6 when the movable table 5 moves forward (FIG. 6 (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. 6 (2) and (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.

  As shown in FIG. 8, the unloading support mechanism 9 sets a load conveyance path on the left and right of the center line c <b> 1 of the movable table 5 at the front end of the movable table 5 (the front end of the leading loading table 5 </ b> A). The pair of guide mechanisms 90a and 90b are provided at symmetrical positions with respect to the center lines c2 and c3 of the respective load conveyance paths. Note that the installation position and the number of installation of the guide mechanism are not limited to those shown in the drawings, and various design modifications are possible.

  As shown in FIGS. 8 to 10, the guide mechanisms 90 a and 90 b of this embodiment are rotatably arranged between left and right mounting plates 57 and 57 provided to face each other at the front end of the movable base 5. The driving roller 91 is provided. The driving roller 91 has an outer peripheral surface covered with an elastic body 94 such as urethane foam, and the shaft portions 92 at both ends are rotatably supported by bearing holes 57a formed in the left and right mounting plates 57, respectively. ing. The driving roller 91 is rotated by rolling on the load receiving surface 1a with the outer peripheral surface being in contact with the load receiving surface 1a.

  Each of the guide mechanisms 90a and 90b includes left and right swing plates 95 and 95 that are supported in an up and down manner so that the guide mechanisms 90 can be tilted forward, and left and right springs that bias the left and right swing plates 95 in a standing direction. 99,99. A through hole 95 a is provided at the lower end of each swing plate 95, and each swing plate 95 is connected to the shaft 92 of the drive roller 91 by passing the shaft 92 at both ends of the drive roller 91 through the through hole 95 a. It is free to undulate with fulcrum as the fulcrum.

  Each spring 99 is configured by using a coil spring, and is provided on each of the shaft portions 92 at both ends of the drive roller 91. One end of each spring 99 is locked to the mounting plate 57, and the other end is locked to the swing plate 95. Each spring 99 is urged so that each swing plate 95 is in a standing posture, In this angle range (for example, 45 degrees), a forward tilting posture and a standing posture can be obtained.

  Between the upper ends of the left and right swing plates 95, 95, a feed roller 96 that is in contact with the drive roller 91 is provided horizontally at a position lower than the conveying roller 6, and protrudes forward to a position near the front side of the feed roller 96. A strip-shaped guide plate 98 is provided in parallel with the feed roller 96. The feed roller 96 has its outer peripheral surface pressed against the outer peripheral surface of the driving roller 91, and shaft portions 97, 97 at both ends are rotatably supported by bearing holes 95b, 95b formed in the swing plates 95. Thus, it rotates integrally with the driving roller 91 in the opposite direction by the frictional force with the driving roller 91.

When the swinging plates 95 and 95 are in the standing posture under the spring force of the spring 99, the feed roller 96 is positioned almost directly above the drive roller 91, but with respect to the vertical line L passing through the fulcrum of the swinging plate 95. Therefore, the guide plate 98 is slightly lifted forward.
In the above embodiment, the entire outer peripheral surface of the drive roller 91 is covered with the elastic body 94, but only the central portion of the outer peripheral surface of the drive roller 91 may be covered with the elastic body 94. In this case, slipping with the lower surface of the load M can be reduced by applying knurling or the like to both end portions of the outer peripheral surface of the feed roller 96 that do not contact the elastic body 94 of the drive roller 91.

Next, the load feeding operation will be described with respect to the embodiment of the load feeding device described above.
For example, when the load M is sent from the end of the production line, using a forklift or the like, as shown in FIG. It is placed on the transport roller 6. Note that the load M may be placed on a pallet.

  Next, when the reciprocating mechanism 7 is operated, as shown in FIG. 11 (2), each wheel 3 of each loading platform 5A rolls on the guide rails 20 and 20 of the base 2 to move the movable platform 5. Moves forward and transfers onto the load receiving surface 1a of the transport vehicle 1 from the base 2. 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, a position not in contact with the outer peripheral surface of the predetermined conveying roller 6, and supports the other. Since the roller 40 rolls at the rear end position of the long hole portions 17, 19, that is, at a position where it does not contact the outer peripheral surface of the adjacent transport roller 6, the rotation of each support roller 4, 40 is transmitted to the transport roller 6. Therefore, the transport roller 6 does not rotate (see FIG. 6 (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, each wheel 3 of each loading platform 5A rolls on the load receiving surface 1a, and the movable platform 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 roller 6, The 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 roller 6 (see FIG. 6B).

  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. 6 (3)) As a result of the elastic body 43 on the outer peripheral surface of the support rollers 4, 40 being compressed and deformed between the transport roller 6 and the load receiving surface 1 a, the elastic body 43 of the transport roller 6 is caused by this compression deformation. A large frictional force is generated between the support rollers 4 and 40 and the conveying roller 6 in close contact with the outer peripheral surface. Due to the frictional force, the conveying roller 6 is reliably rotated integrally with the support rollers 4 and 40 without slipping, and the other conveying rollers 6 are also interlocked with this, so as shown in FIG. The load M is sequentially lowered onto the load receiving surface 1a.

FIGS. 12 (1) to 12 (5) show the operation when unloading the load M from the front end of the movable table 5 onto the load receiving surface 1a.
FIG. 12 (1) shows a state immediately before the movable platform 5 reaches a position on the load receiving surface 1a to be stopped. During this advancement, the drive roller 91 and the feed roller 96 of each guide mechanism 90a, 90b in the unloading support mechanism 9 are integrally rotated in the opposite directions. The front half of the load M is supported on the transport roller 6 and the front half protrudes from the front end of the movable base 5, but the load M is not inclined and is not in contact with the feed roller 96.

  Next, when the movable table 5 is moved backward to unload the load M, if more than half of the load M protrudes from the front end of the movable table 5, the load M is inclined forward as shown in FIG. The upper end portion of the front end portion of M abuts against the back wall portion 1b. The load M is inclined and the lower surface of the load M is supported by the feed roller 96. When the rotating feed roller 96 comes into contact with the lower surface of the load M, a frictional force acts between them. This frictional force is applied to the load M when the rear end of the lower surface of the load M gets over the feed roller 96. It is blocked from being pushed back.

  When the load M is transferred onto the guide plate 98, as shown in FIG. 12 (3), the load of the load M is applied to the guide plate 98 and the swinging plate 95 is tilted forward to assume a forward leaning posture. Slide down the guide plate 98. As a result of the forward movement of the load M due to the rotational displacement when the swinging plate 95 is tilted forward, the load M is packed forward and the inclination is reduced. Thereafter, the load M is forwarded while sliding down the guide plate 98. Then, it is gently lowered onto the load receiving surface 1a (FIG. 12 (4)). When the leading load M is lowered onto the load receiving surface 1a, the swinging plate 95 is raised by receiving the spring force of the spring 99, and the feed roller 96 and the guide plate 98 are moved upward. When unloading is completed, the unloaded load M is pre-packed and no gap is formed between the back wall 1b (FIG. 12 (5)).

  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.

DESCRIPTION OF SYMBOLS 1a Load receiving surface 4,40 Support roller 5 Movable base 6 Conveyance roller 7 Reciprocating mechanism 9 Unloading support mechanism 90a, 90b Guide mechanism 91 Drive roller 95 Swing plate 96 Feed roller 98 Guide plate 99 Spring

Claims (4)

  At a speed that matches the retreating speed of the movable base, a movable base that can move back and forth on the load receiving surface for feeding the load, a plurality of transport rollers that are horizontally arranged on the movable base along the front-rear direction, and A roller drive mechanism that drives the transport roller so that the load on the transport roller is forward-fed, and an unloading support mechanism that supports the operation of unloading the load on the transport roller from the front end of the movable table onto the load receiving surface. In the load feeding device, the unloading support mechanism is configured by disposing at least one guide mechanism at the front end of the movable table, and the guide mechanism can be raised and lowered so as to be able to fall forward. Left and right swing plates and a spring that urges the swing plates to be in an upright posture, and between the upper ends of the left and right swing plates, at a position lower than the transport roller, The feed roller is installed horizontally Front shippers inclusive device comprising disposed in parallel with the guide plate feed rollers projecting forwardly in the vicinity of the feed roller.   The load feeding device according to claim 1, wherein the guide mechanism is provided in a pair on the left and right at a position according to a load conveyance path on the movable table.   The guide mechanism further includes a drive roller supported to freely rotate so as to roll on the load receiving surface, and the feed roller integrally rotates in the opposite direction by a frictional force with the drive roller. The load feeding device according to claim 1, wherein the load feeding device is pressed against the outer peripheral surface of the drive roller.   The load feeding device according to any one of claims 1 to 3, wherein the feed roller is positioned rearward with respect to a fulcrum position of the swing plate when the swing plate is in a standing posture.

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