JP3019837U - Pallet rack - Google Patents

Abstract

(57) [Abstract] [Purpose] In a pallet transfer mechanism using a transfer trolley and its drive trolley, the pallet hook of the transfer trolley is disengaged from and engaged with the pallet with a simple structure to reduce the overall cost. . A pair of free roller groups 110 for supporting pallets are installed on a rack base 100, a first rail 120 is installed on the rack base 100 between each row, and a carriage 130 is installed there. Also, a pair of second rails 140 are installed, and the drive carriage 1 is installed there.
50 are arranged. In the first rail 120,
The pallet hook 13 is placed at the retracted position of the carriage 130 on the back side.
3 is a low-position rail surface 12 that can be separated from the pallet
1 is set, and the connecting surface 122 having an upward slope is added to this.
The rail surface 123 is set at a high position so that the pallet hook 133 can contact and engage with the pallet on the side of the cargo entry / exit end 102.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pallet rack including a pallet transport mechanism including a pallet transport carrier and a drive carrier for the pallet.

[0002]

[Prior art]

 A conventional pallet rack of this type is disclosed in Japanese Utility Model Publication No. 3-50082. The outline of the configuration will be described below with reference to FIG. In FIG. 2, reference numeral 2 is an elongated rack, and free roller groups 3 each composed of a plurality of free rollers 5 are installed along the longitudinal direction on both sides of the rack, and the position between these free roller groups 3 is lower than the height thereof. A traveling rail 7 is installed on the traveling rail 7, and a pallet transporting carriage 6 is movably disposed on the traveling rail 7. Further, a pair of traveling rails (not shown) are installed in the lower inner side of each free roller group 3, and a drive carriage 17 for driving the carriage is arranged on the traveling rails so as to be able to travel.

The carrier vehicle 6 includes an elongated frame 8 having a rectangular tubular shape, and a plurality of wheels 9 intermittently arranged in the lower longitudinal direction of the frame 8. In addition, a plurality of pallet hooks 11 are intermittently rotatably supported in the longitudinal direction of the upper surface of the pallet hooks 11, and a conveyor bar 13 having a hook lifter 14 below the row of the pallet hooks 11 is movably mounted in the frame 8. Then, each pallet hook 11 is operated by engaging / disengaging the hook lifter 14 with respect to the pallet hook 11 by the traveling movement of the transport bar 13 in the frame 8. It should be noted that stoppers 15 are provided in front of and behind the carrier truck 6 in order to limit the moving range of the carrier bar 13 on the carrier truck 6.

On the other hand, the drive carriage 17 is composed of a frame 18 having a width between the two free roller groups 3 and wheels 19 arranged on both sides of the frame 18.

The carrier truck 6 is arranged on the back side of the traveling rail 7 and the driving carriage 17 is arranged on the cargo loading / unloading end side of the pair of traveling rails, respectively. It is connected by a forward drive wire 20 wound in a U-turn shape via a pulley 21 provided at the end. In the transport carriage 6, although not particularly shown, a backward drive wire is connected to the rear end of the transport bar 13, and the backward drive wire is hung down via a pulley attached to the rear end of the rack 2. A weight is attached to the end of the conveyor bar 13, and the conveyor bar 13 is normally pulled rearward.

Next, the loading and unloading of cargo by the pallet transport mechanism using the pallet rack transport trolley 6 and the drive trolley 17 of the conventional example will be described.

A case where a cargo is carried into the rack 2 will be described with reference to FIG. First, the fork for loading the cargo of the forklift supports the pallet on which the cargo is loaded and puts it on the free roller group 3 from the cargo entry / exit end side. Then, the fork pushes the cargo in the depth direction of the rack 2 to roll it on the free roller group 3. Continue to carry in the next cargo in the same way.

A case where a cargo is unloaded from a rack will be described with reference to FIGS. 2 (a) and 2 (b). First of all, by pushing the drive carriage 17 inward of the rack 2 from the cargo loading and unloading side of the rack 2 with the cargo loading fork of the forklift, the transport bar 13 connected to the drive carriage 17 by the forward drive wire 20 is moved. The pallet hooks 11 are driven forward on the transport carriage 6, and by the forward movement of the drive transport bar 13, the hook lifters 14 raise the pallet hooks 11 to come into contact with the bottoms of the pallets placed on the free roller group 3. Let When the drive carriage 17 is pushed further in this state, the carrier bar 13 hits the front stopper 15 of the carrier carriage 6, and the carrier carriage 6 is advanced to roll the pallet carrying the cargo on the free roller group 3. When the pallet has been sent to the loading / unloading end, lift the fork and carry out the pallet. At the same time, the pressing of the forks against the drive carriage 17 is released, and the transport bar 13 is pulled by the weight through the rearward drive wire and is driven backward. When the transport bar 13 is retracted, the hook lifters 14 are disengaged from the pallet hooks 11, and the pallet hooks 11 fall down to separate from the succeeding pallet. Subsequent pallets are on standby on the free roller group 3 at that position. When the transport bar 13 retreats and hits the rear stopper of the transport vehicle 6, the transport bar 13 is driven backward together with the transport vehicle 6 and returned to the original position on the back side. Then, by repeating the same operation, the subsequent pallet is similarly sent to the cargo entry / exit end side and is carried out by the fork.

As described above, in the above-mentioned conventional pallet rack, the pallet transport mechanism is configured by the transport trolley 6 and its drive trolley 17, and the cargo can be easily loaded and unloaded at one end of the rack 2.

[0010]

[Problems to be solved by the device]

 However, in the above-mentioned conventional pallet rack, in the palette transport mechanism of the transport carriage and the drive carriage, in order to disengage and engage each pallet hook of the transport carriage with respect to the pallet, the pallet hook is undulated on the transport carriage. Therefore, each part of the transport carriage that constitutes the pivotal support mechanism of each pallet hook, each part and each part that constitutes the pallet hook operation mechanism, and each part are required, and the structure is complicated and costly. There was a problem of getting high.

The present invention solves such a conventional problem. In a pallet transport mechanism including a transport carriage and a drive carriage thereof, a pallet hook of the transport carriage is detached from a pallet with a simple structure. In addition, the objective is to provide a pallet rack that can reduce costs as a whole.

[0012]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the pallet rack according to the present invention has an elongated rack base which is set in advance with one end as a cargo entry / exit end and the other end as a far end, and is installed on both sides of the rack base along its longitudinal direction. Between the pair of free rollers, which are installed as a pair of free rollers that rotatably support a plurality of pallets for loading cargo, and a position lower than the level of support for the pallets. Installed on the first guide rail and a pair of second guide rails on both sides of the first guide rail, and a plurality of pallet hooks that are arranged so that they can travel on the first guide rail and that can contact and engage with the pallet on the upper surface. A carriage for protruding pallets, a pull-in urging means for pulling the carriage on the upper side of the first guide rail in the normal state, and a pair of second guides. A drive carriage for driving a carriage that is laid between the rails and is arranged so that it can travel on the second guide rail starting from the cargo entry / exit end, and a pulley installed on the cargo entry / exit end side of the rack base. And a drive wire connected to the drive carriage at one end and the drive wire connected to the drive carriage at the other end. Each pallet hook of the trolley is continuous with a low-position rail surface that can be separated from the pallet and an up-sloping connecting surface to this low-position rail surface. The hook is provided with a high-position rail surface that can be engaged with the pallet by contact.

[0013]

[Action]

 According to the present invention, with the above configuration, the following cargo can be loaded and unloaded. In the normal state, the transport carriage is towed by its retracting biasing means and is stopped by waiting on the lower rail surface on the upper back side of the first guide rail, and the drive wire is manually pulled in to drive the drive carriage. Is stopped at the cargo entry / exit end on the second guide rail.

When carrying a cargo into a pallet rack, first, a cargo loading forklift fork supports the pallet on which the cargo is loaded, and this is loaded from the cargo loading / unloading end onto a pair of free roller groups on both sides of the rack base. Put it on, then push the cargo with a fork, and push the pallet inward while rolling it on the free rollers. At this time, the carrier truck is stopped on the rail surface at the low position on the first guide rail, so that each pallet hook on the upper surface does not come into contact with the pallet. Then, by repeating this loading operation as necessary, the respective cargoes are pushed by the front cargoes and pushed inward.

Further, when unloading cargo from the pallet rack, first, the fork for loading the cargo of the forklift pushes the driving carriage from the cargo loading / unloading end on the second guide rail in the depth direction to drive the cargo. The transport carriage connected via the wire is driven forward from the rail surface at the lower position on the first guide rail, and when the transport carriage rides on the ascending contact surface, the pallet hooks on the top surface of the transport carriage reach the bottom of the pallet. When they are brought into contact with each other and the driving carriage is pushed further from this state, the pallet rolls forward on the free roller group as the conveying carriage moves forward, and the cargo moves to the cargo entry / exit end side. Then, when the pallet is sent to the front, the fork is lifted and the cargo is carried out together with the pallet. Here, the pressing of the fork on the drive carriage is released, and the transport carriage is driven backward by the pulling biasing means to the original low rail surface on the first guide rail, and at the same time, the drive wire of the transport carriage is driven. The drive carriage is driven backwards on the second guide rail to the original cargo entry / exit end by hand-in. Then, by repeating such an operation as necessary, the succeeding pallet is similarly sent to the cargo in / out end side and is carried out by the fork.

[0016]

【Example】

 FIG. 1 shows the configuration of an embodiment of the present invention. In FIG. 1, reference numeral 100 denotes a rack base, which is composed of a plurality of base frames 101, and these base frames 101 are long and narrow flat regions in which one end is previously set as a cargo loading / unloading end 102 and the other end is set as a back side end 103. A pair of free roller groups 110, which are arranged in parallel in the width direction thereof and rotatably support a cargo loading pallet, are installed on the rack base 100. The first guide rail 120 is installed between the pair of free roller groups 110 at a position lower than the support level for the pallet, and the pallet transporting carriage 130 can travel on the guide rail 120. A pair of second guide rails 140 are installed on both sides of the guide rail 140, and a drive carriage 150 for driving the carriage is arranged on the guide rails 140 so that the carriage can travel. The pallet transport mechanism is constituted by 150. Hereinafter, each part will be described in detail.

Each free roller group 110 is configured by arranging a plurality of free rollers 112 between a pair of two roller frames 111, and on both sides of the rack base 100 along the longitudinal direction thereof, that is, the cargo loading / unloading end 102. It is installed from the rear end 103 to the rear side. The roller frame 111 has a certain height, and the support level of each free roller group 110 with respect to the pallet is set to a predetermined height from the rack base 100.

The first guide rail 120 is composed of an elongated rail frame having a substantially U-shaped cross-section with an open upper surface, and on the inner side surface thereof, a low-position rail surface 121 set at a fixed portion on the inner side and a lower rail surface 121. The rail surface 121 at a low position is connected to the rail surface 121 at a predetermined angle via a connecting surface 122 that is upwardly inclined, and has a rail surface 123 at a high position set on the cargo entry / exit end 102 side. It is laid in the middle of the group 110. Here, each rail surface 121, 123 is set at a position lower than the support level of each free roller group 110 for the pallet by a predetermined dimension.

The carrier truck 130 is composed of an elongated frame 131 in the shape of a rectangular tube and a plurality of wheels 132 arranged at equal intervals on both sides of the frame 131, and has a plurality of pallets on the upper surface at regular intervals in the longitudinal direction. The hook 133 is fixed upward. Here, the frame 131 has a size that can be fitted into the rail frame of the first guide rail 120, and its entire length corresponds to the length of the rail surface 121 at a substantially low position, and the frame 131 is attached to each pallet hook 133 on the upper surface. A predetermined height is set so that the pallet hooks 133 reach the pallet support level of the pair of free roller groups 110 on the rail surface 121 of the first guide rail 120, which is a low position, as a whole. Instead, a dimensional structure is adopted in which each pallet hook 133 is brought into contact with the pallet on the free roller group 110 on the rail surface 123 at a high position.

The pair of second guide rails 140 are each formed of a rail frame having an L-shaped cross section, and each rail frame extends along the inner lower portion of both free roller groups 110, on the rack base 100, on the cargo loading / unloading end 102 side. It is laid in a certain range. Here, the rail surface is set at a position lower than the support level of each free roller group 110 for the pallet by a predetermined dimension.

The drive carriage 150 includes a frame 151 having a length corresponding to the distance between the free roller groups 110, and wheels 152 on both sides of the frame 151. Along the rear edge of the frame 151, an operating surface 153 on which a pair of forks for loading the cargo of the forklift can collide can be formed. Here, the drive carriage 150 is arranged on the second guide rail 140 and is positioned below the pallet support level of the free roller group 110.

The carrier truck 130 is disposed on the back side of the first guide rail 120, and a spring 160 is interposed between the carrier truck 130 and the rack base 100, and the urging force of the spring 160 normally lowers the back position. Of the rail surface 121. On the other hand, the drive carriage 150 is arranged on the second guide rail 140 on the cargo loading / unloading end 102 side of the pair, and the pulley 170 is installed on the cargo carriage 130 on the cargo loading / unloading end 102 side of the rack base 100. Via a drive wire 180 wound in a U-turn shape.

Next, the loading and unloading of cargo based on the operation of the pallet transport mechanism by the pallet rack transport trolley 130 and the drive trolley 150 of the above embodiment will be described. In the normal state, the transport carriage 130 is pulled by the biasing force of the spring 160 to the lower rail surface 121 on the upper back side of the first guide rail 120 and is stopped for standby, and the drive wire 180 of the transport carriage 130 is also provided. The drive carriage 150 is stopped at the freight entry / exit end 102 on the second guide rail 140 by pulling in.

When carrying the cargo into this pallet rack, first, the cargo loading fork of the forklift is used to support the pallet on which the cargo is loaded, and then the cargo is loaded and unloaded from the cargo loading / unloading end 102 to the pair of free bases on both sides of the rack base 100. It is placed on the roller group 110. Next, the cargo is pushed by a fork, and the pallet is pushed inward while rolling on the both free roller groups 110. Here, since the carrier vehicle 130 is stopped on the rail surface 121 at a lower position on the first guide rail 120, the pallet hooks 133 on the upper surface do not interfere with the pallet. Then, the same carrying-in operation is repeated as necessary, and the respective goods are pushed by the cargo on the front side and pushed inward.

When unloading a cargo from this pallet rack, first, both the pair of forks for loading the cargo of the forklift push the operating surface 153 of the driving carriage 150 from the cargo loading / unloading end 102 to move the driving carriage 150 to the second guide. The rail 140 is driven forward in the inner direction. At this time, since both forks push the operating surface 153 at the rear side edge of the drive carriage 150, the drive carriage 150 moves smoothly and straight without tilting. As a result, the transport carriage 130 connected to the drive carriage 150 via the drive wire 180 is driven forward from the rail surface 121 at the lower position above the first guide rail 120 toward the cargo loading / unloading end 102, and the transport carriage 130 is moved. When the vehicle rides on the ascending communication surface 1220, the pallet hooks 133 on the upper surface thereof come into contact with and engage with the bottom portion of the pallet. When the drive carriage 150 is continuously pushed in by both forks, the pallet rolls forward on both free roller groups 110 as the transport carriage 130 is driven forward, and the cargo is moved to the cargo loading / unloading end 102 side. When the pallet has been sent to the cargo entry / exit end 102, the fork is raised and the cargo loaded on the pallet is carried out. On the other hand, the pressing of both forks against the drive carriage 150 is released, the transport carriage 130 is pulled by the biasing force of the spring 160, and is driven backward on the first guide rail 120 to the original low-position rail surface 121, At the same time, the drive carriage 180 is driven backward by the transport carriage 130 to drive the drive carriage 150 backward on the second guide rail 140 to the original cargo loading / unloading end 102. Then, the same unloading operation is repeated as required, and the subsequent pallets are similarly sent to the cargo loading / unloading end 102 and carried out by the forks.

As described above, according to the above-described embodiment, in the first guide rail 120, the pallet hooks 133 of the carrier truck 130 are located at the retracted position of the carrier truck 130 on the rear side at a low position where they can be separated from the palette. The rail surface 121 of the pallet is set to be continuous with the rail surface 121 at the lower position through the ascending communication surface 122, and the pallet hook 133 of the carrier truck 130 contacts the pallet on the cargo entry / exit end 102 side. By setting the rail surface 123 at a high position that can be engaged and making the carriage 130 stand by on the rail surface 121 at the low position when the cargo is loaded, the interference of the pallet hook 133 with the pallet is avoided, and the cargo The pallet hook 133 is brought into contact with and engaged with the pallet by moving the carrier truck 130 to the rail surface 123 at a high position at the time of unloading. Therefore, unlike the conventional structure in which the pallet hook is undulated on the carrier truck, the pallet hook 133 can be fixed on the carrier truck 130, which simplifies the overall structure and reduces the cost. Can be planned.

[0027]

[Effect of device]

 As described above, according to the present invention, in a pallet transport mechanism using a transport carriage and its drive carriage, each pallet of the transport carriage is set on the first guide rail at the retracted position of the transport carriage on the back side. The lower rail surface where the hooks can be separated from the pallet and the lower rail surface are continuous via the ascending connecting surface, and the pallet hook of the carrier is set on the cargo entry / exit end side. It is equipped with a high-position rail surface that can be brought into contact with, and when the cargo is carried in, the carrier truck waits on the low-position rail surface to avoid the interference of the pallet hook with the pallet, and when the cargo is unloaded. Since the pallet hook is brought into contact with and engaged with the pallet by moving the carrier truck to the rail surface at a high position, the pallet carrier machine is composed of the carrier truck and the drive carriage. The can be realized by a simple structure, the cost can be reduced as a whole.

[Brief description of drawings]

FIG. 1 shows a configuration of a pallet rack according to an embodiment of the present invention, (a) is a side sectional view thereof, and (b) is a plan view thereof.

FIG. 2 shows a configuration of a conventional pallet rack, (a) is a side sectional view showing a state when a cargo is carried in, and (b) is a side sectional view showing a state when a cargo is carried out.

[Explanation of symbols]

 100 rack base 101 base frame 102 cargo entry / exit end 103 back end 110 pair of free rollers 111 roller frame 112 free roller 120 first guide rail 121 low-position rail surface 122 upslope contact surface 123 high-position rail surface 130 Transport Carriage for Transporting Pallets 131 Frame 132 Wheels 133 Pallet Hook 140 Second Guide Rail 150 Drive Carry for Driving Transport Carriage 151 Frame 152 Wheel 153 Working Surface 160 Spring 170 Pulley 180 Drive Wire

Claims (1)

[Scope of utility model registration request] 1. An elongated rack base which is set in advance so that one end is a cargo loading / unloading end and the other end is a far side end, and a long rack base is installed on both sides of the rack base along its longitudinal direction for loading a plurality of cargos. A pair of free rollers consisting of a plurality of free rollers that rotatably support the pallet, and a first guide rail installed between the pair of free rollers and at a position lower than the support level for the pallet. And a pair of second guide rails on both sides thereof,
A carrier truck for pallet transportation, which is movably arranged on the first guide rail and has a plurality of pallet hooks projectingly provided on the upper surface thereof so as to be in contact with and engageable with the pallet, and the carrier truck as a normal state. The guide urging means for retracting the guide rail to the inner side of the guide rail and the second guide rail forming a pair are bridged, and are arranged so as to be able to travel on the second guide rail starting from the cargo loading / unloading end. It has a drive carriage for driving the transport carriage and a drive wire wound around a pulley installed on the cargo entry / exit end side of the rack base, one end of which is connected to the transport carriage and the other end of which is connected to the drive carriage. Then, on the first guide rail, a rail surface at a low position which is set at the retracted position of the carrier truck on the far side and each pallet hook of the carrier truck can be separated from the pallet, A rail surface at a high position which is continuous with the rail surface of the carrier via an upwardly sloping connecting surface and which is set on the cargo entry / exit end side so that the pallet hook of the carrier can contact and engage with the pallet. Existing pallet rack.