JP4716403B2 - Transfer equipment - Google Patents

Description

  The present invention relates to a transfer device for transferring a pallet for loading a load between a conveyor and a lift truck that handles cargo with a fork.

FIG. 6 shows the conveyor 101 as a plan view. The conveyor 101 conveys a load together with the pallet 3 by driving the checker 6 such as a chain or a belt in the horizontal direction indicated by the arrow X and placing the pallet 3 loaded with the load on the checker 6. . When the pallet 3 placed on the checker 6 of the conveyor 101 is transferred to the lift truck 2 having a pair of liftable forks 7, the lift truck 2 is moved from the direction indicated by the arrow A to the end 102 of the conveyor 101. The lift truck 2 is stopped when the pair of forks 7 enter below the pallet 3.

  The lift truck 2 has a structure in which a wheel 72 is provided in the vicinity of the tip of each fork 7 and a part of the load received by each fork 7 is borne by these wheels 72. For this reason, it is essential that the individual wheels 72 are grounded to the floor or the like with the pair of forks 7 entering the lower side of the pallet. When a deck plate or the like is provided on the lower side of the pallet, the wheel 72 is grounded while avoiding the deck plate or the like.

  Subsequently, when the pair of forks 7 of the lift truck 2 is raised and the pallet 3 is lifted from the checker 6 of the conveyor 101, the pallet 3 is supported by the pair of forks 7. In this state, after the lift truck 2 is retracted from the end 102 of the conveyor 101, the load can be moved to another place while being supported by the pair of forks 7 together with the pallet 3.

  On the other hand, when the pallet 3 supported by the fork 7 of the lift truck 2 is transferred to the conveyor 101, the lift truck 2 is moved forward toward the end 102 of the conveyor 101 as described above, and the pallet 3 is checked. When it reaches just above, lift truck 2 is stopped. Then, if the pair of forks 7 are lowered until they become lower than the checker 6, the pallet 3 is received by the checker 6. Thereafter, if the check body 6 is driven, the cargo can be transported together with the pallet 3.

Also, in the following patent document, an elevating means for receiving a load so as to be able to move up and down is installed near one end of the conveyor, and the load received by the elevating means is lowered onto the conveyor by lowering the elevating means, A technique for lifting a load from a conveyor by raising the means is disclosed.
JP 2004-269161 A

In the case of transferring goods using the lift truck 2 as described above, if a wall or a pillar is located near the end 102 of the conveyor 101, the lift truck 2 is pointed by an arrow A in FIG. It is difficult to approach the conveyor 101 from the direction. However, if the lift truck 2 is caused to approach the side portion 103 of the conveyor 101 from the direction indicated by the arrow B, the wheels 72 of the lift truck 2 are obstructed by the checker 6 and the pair of forks 7 are moved below the pallet 3. Cannot enter. Therefore, when installing the conveyor 101, arrangement | positioning of a wall or a pillar must be considered and there exists a problem that the place which installs the conveyor 101, or the usability of the lift truck 2 is restrict | limited unnecessarily.

  Then, an object of this invention is to provide the transfer apparatus which can deliver / receive a load from the side part of a conveyor using a lift truck.

  The present invention wraps an endless checker around a plurality of rotating wheels separated from each other, and drives the checker in a feeding direction from one rotating wheel to another rotating wheel among the plurality of rotating wheels, A lift truck having a conveyor that conveys a pallet having a size in the feed direction larger than the interval between the one rotating wheel and the other rotating wheel by placing the pallet on the checker, and a fork that can support the pallet to be raised and lowered. And the transfer device for transferring the pallet between the one rotating wheel and the other rotating wheel, and the lift truck crosses the feeding direction of the checker A floor member capable of traveling in a direction, and a guide wheel that detours the checker below the floor member are provided.

  Furthermore, the transfer device according to the present invention is characterized in that it includes elevating means for elevating and lowering the checker with respect to the floor member.

  In order to convey a pallet by the conveyor of the transfer device according to the present invention, an endless checker wound around a plurality of rotating wheels is directed from one rotating wheel among the rotating wheels to another rotating wheel. It can be done by driving in the feed direction and placing a pallet on this checker. In this process of transporting the pallet, the checker is diverted below the floor member by the guide wheel between the one rotating wheel and the other rotating wheel, so that the checker is detached below the pallet. On the other hand, since the pallet has a dimension in the feed direction that is larger than the distance between one rotating wheel and another rotating wheel, even if the checker is detached from the corresponding part between the one rotating wheel and the other rotating wheel. The other side is always in contact with the checker. As a result, the pallet continues to receive a force in the feed direction from the checker even in a state where the pallet straddles between one rotary wheel and another rotary wheel, and is further conveyed in the forward direction of the feed direction.

  And according to the said transfer apparatus, a lift truck can be made to drive | work a floor member arrange | positioned between one rotating wheel and another rotating wheel, and the feed direction of a check body can be made to cross the lift truck. When the pallet placed on the checker passes between one rotating wheel and the other rotating wheel, the drive of the checker is stopped or decelerated, and the lift truck is placed on the floor with its fork facing the pallet. When advancing on the member, the fork is allowed to enter below the pallet. If the fork is raised in this state, the pallet can be supported by the fork. Further, after the lift truck has been retracted away from the conveyor, the pallet can be moved elsewhere along with the lift truck.

  As described above, according to the transfer device, the conveyor carries the pallet, and the lift truck is moved forward or backward from the side of the conveyor without being obstructed by the checker. be able to. Therefore, since it is not always necessary to bring the lift truck close to the end of the conveyor as in the conventional example, for example, even if there is an obstacle such as a wall or a pillar near the end of the conveyor, the pallet is reliably transferred. be able to.

  Further, since the transfer device includes lifting means for raising and lowering the checker with respect to the floor member, the height of the pallet placed on the checker is set according to the height from the floor member to the fork of the lift truck. It can be adjusted freely. As a result, the following effects can be obtained. For example, even if the fork of the lift truck that travels on the floor member is lowered to near its lower limit, the height from the floor member to the fork is determined by the specifications of the lift truck. If the lift truck is advanced to the side of the conveyor with the checker raised from the floor member to the height of such a fork or higher, the fork of the lift truck can be moved below the pallet. Can be surely entered.

  FIG. 1 shows a transfer device 4 for transferring and receiving a pallet 3 loaded with a load between a conveyor 1 and a lift truck 2 that can be manually pushed. As shown in FIG. 2, the conveyor 1 winds an endless checker 6 around a plurality of rotating wheels 50 to 53 that are separated from each other, and this checker 6 is attached to one of the plurality of rotating wheels 50 to 53. It drives in the feed direction which goes to the other rotating wheel 52 from the rotating wheel 51, and conveys it by mounting the pallet 3 on the check body 6. FIG. As shown in FIG. 3, the lift truck 2 has a fork 7 that can support the pallet 3 so as to be movable up and down.

  These details are described as examples. The feed direction is a horizontal direction from the left to the right of the drawing as indicated by an arrow T, and is referred to as “feed direction T” below.

  As shown in FIGS. 1 to 3, the transfer device 4 includes three floor members 8 functioning as a floor surface on which the lift truck 2 can travel in a direction crossing the feeding direction T of the check body 6, and the floor members 8. A plurality of guide wheels 9 for detouring the checker 6 downward, and an elevating means 10 described later are provided. A sprocket, a roller, a pulley, or the like can be applied to each of the plurality of rotating wheels 50 to 53 or the guide wheel 9. Further, a chain, a wire, a belt, or the like can be applied to the check body 6.

  The conveyor 1 rotatably supports a plurality of rotating wheels 50 to 53 inside a pair of frames 11, and the pair of frames 11 are connected by a connecting material 12 made of three angle steels. Each frame 11 includes three sets of one rotating wheel 51 and another rotating wheel 52, and further supports a plurality of guide wheels 9 rotatably below the plurality of rotating wheels 50-53. . Illustrations of bearings and the like for bearing these rotating wheels 50 to 53 and the guide wheels 9 on the individual frames 11 are omitted. The rotating wheel 50 is connected to the electric motor 13 by a drive chain 131. When the electric motor 13 rotates, decelerates, or stops based on a command from an operator or the like, the plurality of rotating wheels 51 to 53 and the plurality of guide wheels 9 follow the rotating wheel 50 through the checker 6.

  The pallet 3 can be transported using the conveyor 1 by placing the pallet 3 on the checker 6 and starting the electric motor 13 to drive the checker 6 in the feed direction T as shown in the figure. In the process of conveying the pallet 3 in this way, the checker 6 is guided by the guide wheel 9 so as to pass below the floor member 8 between the one rotating wheel 51 and the other rotating wheel 52. Further, the checker 6 is detached from the lower surface of the pallet 3 between the one rotating wheel 51 and the other rotating wheel 52, but the dimension in the feed direction of the pallet 3 is different from that of the one rotating wheel 51 and the other rotating wheel 52. Since the distance between the rotating wheel 52 and the rotating wheel 52 is larger, the checker 6 always contacts a part of the lower surface of the pallet 3. For this reason, the pallet 3 continues to receive the force in the feed direction T from the check body 6 even in a state where the pallet 3 straddles between the one rotary wheel 51 and the other rotary wheel 52, and is further conveyed forward in the feed direction T. The

  The lift truck 2 extends the hydraulic jack not shown in the figure by repeatedly tilting the handle 21 back and forth, and the pair of forks 7 can be raised according to the extension of the hydraulic jack. Further, the lift truck 2 can lower the pair of forks 7 by its own weight by opening the relief valve of the hydraulic jack. A wheel 72 is provided near the tip of each fork 7 via a bracket 71. The bracket 71 plays a role of keeping the pair of forks 7 horizontal by standing up according to this operation when the pair of forks 7 are raised or lowered, or by falling sideways.

  The individual floor members 8 are respectively disposed between the pair of rotating wheels 51 and the rotating wheels 52. The floor member 8 is a flat plate or rail-like member that can smoothly roll the wheels 72 of the lift truck 2 and is limited as long as it has a strength that can withstand the load of the lift truck 2 during loading. It is not a thing. For example, when a pit or the like for storing the conveyor 1 is dug down on the floor of a warehouse, as shown in FIG. 4, a floor plate 81 that closes the pit or the like is checked together with one rotating wheel 51 and another rotating wheel 52. A plurality of openings 82 for projecting 6 may be provided, and between or near these openings 82 may be used as the floor member 8.

  According to the transfer device 4 described above, the lift truck 2 can travel on the floor member 8 in a direction crossing the feeding direction T of the checker 6 with the wheels 72 placed on the floor member 8, and so on. Can be carried out.

  First, as shown in FIG. 4, the lift truck 2 is placed on standby near the side of the conveyor 1 with the pair of forks 7 facing the pallet 3. On the other hand, as shown in FIGS. 1 and 2, when the pallet 3 placed on the checker 6 passes between one rotating wheel 51 and another rotating wheel 52, the driving of the checker 6 is stopped or Decrease significantly. Subsequently, as shown in FIG. 5, when the lift truck 2 is advanced on the floor member 8 toward the side of the conveyor 1, the pair of forks 7 can enter the lower part of the pallet 3. If the lift truck 2 is stopped and the pair of forks 7 are raised in this state, the pallet 3 can be supported by the pair of forks 7. Further, after the lift truck 2 is moved away from the conveyor 1 from the side of the conveyor 1 to the state shown in FIG. 4, the pallet 3 can be moved freely together with the lift truck 2.

  Further, as described above, in the process in which the lift truck 2 moves forward on the floor member 8, for example, even if the fork 7 is lowered to near its lower limit, as shown by the dimension line h in FIG. The height to each fork 7 is determined by the specifications of the lift truck 2. The fork 7 cannot enter the lower side of the pallet 3 unless the lift 6 is advanced to the side of the conveyor 1 with the checker 6 raised to this height or higher. . Therefore, as shown in FIG. 2, the transfer device 4 includes elevating means 10 that elevates and lowers the check body 6 with respect to the upper surface of the floor member 8, The height from the member 8 to the pallet 3 can be adjusted freely.

  As the lifting means 10, a pantograph lifter that lifts and lowers the frame 11 of the conveyor 1 may be applied. For example, each appropriate place of the treatment 14 is connected to both ends of a hydraulic cylinder 15 that expands and contracts by hydraulic pressure, and the treatment 14 is raised up to push up the frame 11 at each upper end of the treatment 14. The frame 11 may be lowered by tilting the treatment 14 sideways.

  According to the transfer device 4 described above, the conveyor 1 is caused to carry the pallet 3 and the lift truck 2 is advanced to the side of the conveyor 1 without being obstructed by the checker 6 or the conveyor 1 Can be retracted from the side. Therefore, since it is not always necessary for the lift truck 2 to approach the end of the conveyor 1 as in the prior art, even if there is an obstacle such as a wall or a pillar near the end of the conveyor 1, the pallet 3 can be reliably transferred. It can be carried out.

  The transfer device according to the present invention can transport or transfer a load together with a pallet even if the lift truck can be used even in a place where a forklift cannot be entered, such as the second floor of a warehouse.

The top view of the transfer apparatus which concerns on Example 1 of this invention. The side view of the transfer apparatus which concerns on Example 1 of this invention. The side view of the lift truck applied to Example 1 of this invention. The top view which shows 1 process of the usage example of the transfer apparatus which concerns on Example 1 of this invention. The top view which shows the other process of the usage example of the transfer apparatus which concerns on Example 1 of this invention. The top view explaining the conventional procedure which transfers a load between a conveyor and a lift truck.

1: Conveyor 2: Lift truck 3: Pallet 4: Transfer device 6: Check 7: Fork 8: Floor member 9: Guide wheel 10: Lifting means 16: Rotating wheel lifting means 17: Tension holding means 50-53: Rotation ring

Claims (2)

An endless checker is wound around a plurality of rotating wheels separated from each other, and the checker is driven in a feed direction from one rotating wheel to another rotating wheel in the plurality of rotating wheels, and the one rotation A conveyor that conveys a pallet having a larger dimension in the feeding direction than the interval between the wheel and the other rotating wheel by placing the pallet on the checker;
A transfer device for transferring the pallet between a lift truck having a fork capable of supporting the pallet so as to be movable up and down,
A floor member disposed between the one rotating wheel and the other rotating wheel, the lift track being able to travel in a direction crossing the feeding direction of the checker;
A guide wheel for bypassing the checker to the lower side of the floor member;
A transfer apparatus comprising:   The transfer device according to claim 1, further comprising lifting means for lifting the checker with respect to the floor member.

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