JP6933432B1 - Attachment for forklift - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attachment for a forklift suitable for using a forklift as a turret type transport vehicle. An attachment 2 is a reach-type fork attachment, which is provided below a loading platform 20 and a loading platform 20, a pair of left and right outrigger connecting portions, and a pair of left and right brackets provided on the rear side of the loading platform 20. It is provided with a connecting portion. The bracket connecting portion has a hook-shaped locking portion 221 and is locked to the plate portion 140 of the lift bracket when the loading platform 20 is lifted by the fork 15. The outrigger connection has a plurality of rollers 212, which are introduced into the rail guide 110 by the fork 15 lifting the loading platform 20 and pulling back the fork 15, and then the rail by further lifting the loading platform 20 by the fork 15. It comes into contact with the upper surface in the guide 110. [Selection diagram] Fig. 5

Description

The present invention relates to an attachment used for a forklift, and more particularly to an attachment suitable for using the forklift as a turret type material handling vehicle.

A turret-type material handling vehicle is known as a material handling vehicle used in warehouses and wholesale markets (see, for example, Patent Document 1). The turret-type transport vehicle is provided with a cylindrical swivel power unit, a driver's cab, and a loading platform horizontal to the ground, and the power unit is equipped with a steering device and drive wheels. Turret trucks are easy to get on and off and have a small turn, but they do not take into account the cargo handling work of loading and unloading. Therefore, in the wholesale market, the roles of transporting loads by turret trucks and loading and unloading by forklifts are carried out.

By the way, if the forklift also plays the role of a turret-type material handling vehicle, the number of turret-type material handling vehicles owned can be reduced and costs can be reduced. However, for example, when the pallet is lifted horizontally with the ground by a forklift and used as a loading platform of a turret type material handling vehicle, the pallet may slip off from the fork. Further, conventionally, although a forklift has an attachment to be attached to a fork (see, for example, Patent Document 2), there is no consideration for using the forklift like a turret type transport vehicle.

Japanese Unexamined Patent Publication No. 2006-213101 Japanese Unexamined Patent Publication No. 2017-095235

Therefore, an object to be solved by the present invention is to provide an attachment for a forklift suitable for using the forklift as a turret type material handling vehicle.

In order to solve the above problems, the forklift attachment according to the present invention is
With the car body
A pair of left and right masts extending vertically in front of the car body,
A lift bracket that is guided by the mast and can be raised and lowered,
A pair of left and right forks connected to the lift bracket,
A pair of left and right carriages connected to the mast,
A pair of left and right outriggers that extend forward from the vehicle body on the outside of the pair of left and right masts and have a U-shaped rail guide with a U-shaped cross section that guides the carriage inside.
An elevating part that raises and lowers the lift bracket along the mast,
An attachment for a reach-type forklift equipped with a reach cylinder that moves the carriage in the front-rear direction along the outriggers.
With the loading platform
It is located below the loading platform, and the fork lifts the loading platform and pulls it back to introduce it into the rail guide, and then the fork further lifts the loading platform so that it comes into contact with the upper surface in the rail guide and outriggers. A pair of left and right outrigger connecting parts that are connected to each other
It is provided on the rear side of the loading platform, and includes a bracket connecting portion having a locking portion that is locked to the lift bracket when the loading platform is lifted by a fork to a height at which the outrigger connecting portion is guided in the rail guide. , Characterized by.

The above attachment is preferably
The outrigger connection has a plurality of rollers provided along the front-rear direction.
The roller is introduced into the rail guide by pulling back the fork, and the fork lifts the loading platform so that it comes into contact with the upper surface in the rail guide.

The above attachment is preferably
The outrigger connecting portion extends horizontally in the front-rear direction, is introduced into the rail guide by pulling back the fork, and is brought into contact with the upper surface in the rail guide by lifting the loading platform by the fork.

The above attachment is preferably
The outrigger connecting portion has a rectangular cross section and has sliding members on its upper surface, lower surface and / or side surface thereof.

The above attachment is preferably
Further wheels for movement are provided below the loading platform.

The forklift attachment of the present invention allows the forklift to be appropriately used as a turret truck.

It is a perspective view which shows typically the forklift which concerns on 1st Embodiment of this invention. The forklift attachment according to the first embodiment of the present invention is schematically shown, where A is a perspective view, B is a side view, and C is a front view. The fork of FIG. 1 is schematically shown below the loading platform of FIG. 2, where A is a perspective view and B is a side view. A portion of the attachment of FIG. 2 being lifted by the fork of FIG. 1 is shown schematically, where A is a perspective view and B is a side view. The attachment of FIG. 2 is schematically shown attached to the forklift of FIG. 1, A is a perspective view, B is a side view, and C is an enlarged view of part C of B. It is a front view which shows roughly the position of the roller in the rail guide at the time of attaching an attachment, A shows before the attachment is attached, and B shows after the attachment is attached. It is a perspective view which shows typically the forklift which concerns on 2nd Embodiment of this invention. A forklift attachment according to a second embodiment of the present invention is schematically shown, where A is a perspective view, B is a side view, and C is a front view. A portion of the attachment of FIG. 8 being lifted by the fork of FIG. 7 is schematically shown, where A is a perspective view and B is a side view. The attachment of FIG. 8 is schematically shown attached to the forklift of FIG. 7, A is a perspective view, B is a side view, and C is an enlarged view of part C of B. The forklift attachment according to the third embodiment of the present invention is schematically shown, where A is a perspective view, B is a side view, and C is a front view. The attachment of FIG. 11 is schematically shown attached to the forklift of FIG. 7, A is a perspective view, B is a side view, and C is an enlarged view of part C of B.

Hereinafter, the first to third embodiments of the forklift attachment according to the present invention will be described with reference to the accompanying drawings. The front-back direction and the left-right direction in the present invention are based on the double-headed arrows X and Y in the attached drawings.

<First Embodiment>
<Forklift>
First, the forklift 1 according to the first embodiment will be described with reference to FIG. The forklift 1 is a conventional reach type forklift, and includes a vehicle body 10, a pair of left and right outriggers 11, a pair of left and right masts 12, a pair of left and right carriages 13, a reach cylinder (not shown), and a lift bracket 14. A pair of left and right forks 15, a backrest 16, and an elevating part (not shown) are provided.

The outrigger 11 is provided on the lower front side of the vehicle body 10 and extends forward. The outrigger 11 has a rail guide 110 provided along the inside and a front wheel 111 provided at the front portion. The rail guide 110 is formed in a U-shaped cross section. The carriage 13 has a carriage roller 130 guided in the front-rear direction by the rail guide 110, and the mast 12 is connected to the outrigger 11 via the carriage 13. Further, the mast 12 is connected to the reach cylinder and is moved in the front-rear direction along the rail guide 110 by expansion and contraction in the front-rear direction of the reach cylinder.

The lift bracket 14 has a plate portion 140 extending between the left and right masts 12. The lift bracket 14 is connected to the mast 12 and is guided in the vertical direction by a guide included in the mast 12. Further, the lift bracket 14 is connected to the elevating part, and is moved up and down along the guide of the mast 12 by driving the elevating part. The fork 15 and the backrest 16 are connected to the lift bracket 14 and are moved up and down in conjunction with the lift bracket 14.

<Attachment>
As shown in FIGS. 2A to 2C, the forklift attachment 2 includes a loading platform 20, a pair of left and right outrigger connecting portions 21 provided on the lower surface of the loading platform 20, and a pair of left and right brackets provided at the rear end of the loading platform 20. A connecting portion 22 is provided.

Each outrigger connecting portion 21 is provided on two base portions 210 protruding downward from the loading platform 20 at intervals in the front-rear direction, a support plate 211 connected to the two base portions 210 and extending in the front-rear direction, and a support plate 211. It has a plurality of (two in this embodiment) rollers 212 and the like. The two rollers 212 are rotatably supported on the outside of the support plate 211 at intervals in the front-rear direction.

The roller 212 of the outrigger connecting portion 21 is pulled toward the vehicle body 10 while being introduced into the rail guide 110 of the outrigger 11 by lifting the loading platform 20 by the fork 15 and pulling back the fork 15. Then, the roller 212 is brought into contact with the upper surface of the rail guide 110 by further lifting the loading platform 20 by the fork 15, and is connected to the outrigger 11.

Each bracket connecting portion 22 is connected to the rear end of the loading platform 20 at intervals in the left-right direction, and has a base 220 extending above the loading platform 20 and a hook-shaped locking portion 221 continuous from the base 220. Has.

The bracket connecting portion 22 is connected to the plate portion 140 when the loading platform 20 is lifted to a height at which the outrigger connecting portion 21 is guided in the rail guide 110 by the fork 15, and restricts the movement of the attachment 2 in the front-rear direction.

<How to attach the attachment>
Next, a method of attaching the attachment 2 to the forklift 1 will be described with reference to FIGS. 3 to 6.

As shown in FIGS. 3A and 3B, the forklift 1 first lowers the lift bracket 14 to a position where the upper end of the plate portion 140 of the lift bracket 14 is lower than the tip of the locking portion 221 and rearward the attachment 2. Move forward. At this time, the horizontal portion of the fork 15 is located lower than the lower surface of the loading platform 20. Then, the mast 12 is moved forward by the reach cylinder, and the fork 15 is inserted between the loading platform 20 and the ground.

Then, as shown in FIGS. 4A and 4B, the forklift 1 lifts the loading platform 20 horizontally by the fork 15 until the vertical position of the roller 212 is between the upper surface and the lower surface of the rail guide 110. As a result, the locking portion 221 is locked to the upper end of the plate portion 140, and the movement of the attachment 2 in the front-rear direction is restricted.

Next, as shown in FIGS. 5A to 5C and 6A, the forklift 1 pulls the fork 15 back to pull the attachment 2 toward the vehicle body 10 and introduces the roller 212 into the rail guide 110. As a result, the movement of the attachment 2 in the left-right direction is restricted. Further, as shown in FIGS. 5A-5C and 6B, the forklift 1 lifts the loading platform 20 horizontally by the fork 15 and brings the upper surface 212a of the roller 212 into contact with the upper surface 110a in the rail guide 110. As a result, the vertical movement of the attachment 2 is restricted.

As described above, by attaching the attachment 2 to the forklift 1, the loading platform 20 horizontal to the ground like a turret truck is fixed to the forklift 1. Further, conventionally, the reach type forklift 1 is easy to get on and off and has a small turning ability like a turret type material handling vehicle. Therefore, the user can use the forklift 1 equipped with the attachment 2 like a turret truck. Moreover, the user can attach the attachment 2 while riding on the forklift 1.

<Second Embodiment>
Next, a second embodiment of the forklift attachment 2 according to the present invention will be described with reference to FIGS. 7 to 10. The same components as those in the first embodiment may be designated by the same reference numerals and detailed description thereof may be omitted.

<Forklift>
First, the forklift 1 according to the second embodiment will be described with reference to FIG. 7. The forklift 1 of the present embodiment is different from the forklift 1 of the first embodiment in the shapes of the lift bracket 14 and the backrest 16, but is common to other components.

The lift bracket 14 is integrally formed with the backrest 16 and is connected to the left and right masts 12. The lift bracket 14 has a rectangular frame and a plate extending in the left-right direction at the center of the frame. The plate extending in the left-right direction on the lower side of the frame is the plate portion 140 in the present embodiment.

The fork 15 is connected to the lift bracket 14 (backrest 16) so that the fork 15 can be shifted to the left or right inside the lift bracket 14 (backrest 16) in the left-right direction.

<Attachment>
As shown in FIGS. 8A to 8C, in the attachment 2 of the present embodiment, the bracket connecting portion 22 is arranged on the outer side in the left-right direction with respect to the attachment 2 of the first embodiment, but other elements are common. ing.

<How to attach the attachment>
Next, a method of attaching the attachment 2 to the forklift 1 will be described with reference to FIGS. 9 and 10.

As shown in FIGS. 9A and 9B, the forklift 1 is subjected to the loading platform 20 by the fork 15 until the vertical position of the roller 212 is between the upper surface and the lower surface of the rail guide 110 in the same manner as in the first embodiment. Lift horizontally. As a result, the locking portion 221 is locked to the upper end of the plate portion 140 on the lateral side of the fork 15 in the left-right direction, and the movement of the attachment 2 in the front-rear direction is restricted.

Next, as shown in FIGS. 10A to 10C, the forklift 1 pulls the attachment 2 toward the vehicle body 10 side in the same manner as in the first embodiment, restricts the movement of the attachment 2 in the left-right direction, and further lowers the loading platform 20. The fork 15 lifts it horizontally and restricts the vertical movement of the attachment 2.

As described above, the attachment 2 according to the second embodiment is restricted from moving in the front-rear direction by connecting the bracket connecting portion 22 to the lift bracket 14 integrally configured with the backrest 16. The lift bracket 14 in the present invention is a concept including a backrest 16 connected to the lift bracket 14.

<Third Embodiment>
Next, a third embodiment of the forklift attachment according to the present invention will be described with reference to FIGS. 11 and 12. In the third embodiment, the configuration of the attachment 2 is different from that of the second embodiment, but the configuration of the forklift 1 is the same. Therefore, the description of the forklift 1 according to the third embodiment will be omitted.

<Attachment>
The attachment 2 according to the present embodiment will be described with reference to FIGS. 11A to 11C. The attachment 2 is provided on the loading platform 20, a pair of left and right bracket connecting portions 22, six support portions 23 protruding from the lower surface of the loading platform 20, six wheels 24 provided on each support portion 23, and the support portion 23. A pair of left and right outrigger connecting portions 25 are provided.

The six support portions 23 are provided on the left and right sides of the lower surface of the loading platform 20 at intervals of three in the front-rear direction. The wheels 24 are rotatably connected to the respective support portions 23 inside the left and right support portions 23.

The outrigger connecting portion 25 has a rectangular cross section, extends horizontally in the front-rear direction, and is connected to the outside of the support portion 23 at the center in the front-rear direction and at the rear. The outrigger connecting portion 25 is provided with sliding members (not shown) on its lower surface and outer surface.

Similar to the bracket connecting portion 22 of the second embodiment, the pair of left and right bracket connecting portions 22 are connected to the rear end of the loading platform 20 at intervals in the left-right direction, and the base portion 220 extending above the loading platform 20. And a hook-shaped locking portion 221 continuous from the base 220.

Since the wheel 24 is provided around the lower surface of the loading platform 20, the attachment 2 can move stably, and the bracket connecting portion 22 can function as a handle, so that the attachment 2 can be used as a carriage.

<How to attach the attachment>
Next, a method of attaching the attachment 2 to the forklift 1 will be described.

The forklift 1 lifts the loading platform 20 horizontally until the vertical position of the outrigger connecting portion 25 is between the upper surface and the lower surface of the rail guide 110 in the same manner as in the second embodiment, and the locking portion 221 is plated. It is locked to the portion 140.

Next, the forklift 1 pulls the attachment 2 toward the vehicle body 10 by the same method as in the second embodiment, and introduces the outrigger connecting portion 25 into the rail guide 110. Since the outrigger connecting portion 25 has sliding members on the lower surface and the outer surface, friction is small and the outrigger connecting portion 25 is appropriately guided in the rail guide 110. As a result, the movement of the attachment 2 in the left-right direction is restricted. Since the outrigger connecting portion 25 extends in the front-rear direction of the attachment 2, movement in the left-right direction is restricted more stably than in the first and second embodiments.

Further, as shown in FIGS. 12A to 12C, the forklift 1 lifts the loading platform 20 horizontally by the fork 15, brings the upper surface 25a of the outrigger connecting portion 25 into contact with the upper surface 110a in the rail guide 110, and raises and lowers the attachment 2. Regulate directional movement. Since the outrigger connecting portion 25 extends in the front-rear direction and the upper surface 25a of the attachment 2 is not provided with a sliding member, the outrigger connecting portion 25 and the rail guide 110 are more than the first and second embodiments. Friction increases, and movement in the front-back and left-right directions is more restricted.

Although the embodiment of the forklift attachment 2 according to the present invention has been described above, the present invention is not limited to the above embodiment. For example, the configurations of the above embodiments may be combined, or the configurations of the above embodiments may be modified as follows.

-The bracket connecting portion 22 does not have to be a pair on the left and right as long as the front-rear direction of the attachment 2 can be regulated. For example, it may be composed of one bracket connecting portion 22 having a locking portion 221 having a certain width or more in the left-right direction.

A sliding member may also be provided on the upper surface 25a of the outrigger connecting portion 25 in the third embodiment. As a result, the outrigger connecting portion 25 is introduced into the rail guide 110 more smoothly.

1 Forklift 10 Body 11 Outrigger 110 Rail guide 111 Front wheel 12 Mast 13 Carriage 130 Carriage roller 14 Lift bracket 140 Plate 15 Fork 16 Backrest 2 Attachment 20 Loading platform 21, 25 Outrigger connecting 210 Base 211 Support plate 212 Roller 22 Bracket connecting 220 Base 221 Locking 23 Support 24 Wheels

Claims (5)

With the car body
A pair of left and right masts extending in the vertical direction in front of the vehicle body,
A lift bracket that is guided by the mast and can be raised and lowered,
A pair of left and right forks connected to the lift bracket,
A pair of left and right carriages connected to the mast, respectively,
A pair of left and right outriggers extending forward from the vehicle body on the outside of the pair of left and right masts and provided with a U-shaped rail guide having a U-shaped cross section inside the pair of masts.
An elevating part that raises and lowers the lift bracket along the mast,
An attachment for a reach-type forklift equipped with a reach cylinder that moves the carriage in the front-rear direction along the outriggers.
With the loading platform
It is provided below the loading platform, and the loading platform is lifted by the fork and introduced into the rail guide by pulling back the fork, and then the loading platform is further lifted by the fork to be inside the rail guide. A pair of left and right outrigger connecting parts that are in contact with the upper surface of the outrigger and are connected to the outriggers, respectively.
A bracket provided on the rear side of the loading platform and having a locking portion that is locked to the lift bracket when the loading platform is lifted by the fork to a height at which the outrigger connecting portion is guided in the rail guide. An attachment characterized by having a connecting portion. The outrigger connecting portion has a plurality of rollers provided along the front-rear direction.
The roller according to claim 1, wherein the roller is introduced into the rail guide by pulling back the fork, and the roller is brought into contact with the upper surface of the rail guide by lifting the loading platform by the fork. attachment. The outrigger connecting portion extends horizontally in the front-rear direction, is introduced into the rail guide by pulling back the fork, and is brought into contact with the upper surface of the rail guide by lifting the loading platform by the fork. The attachment according to claim 1. The attachment according to claim 3, wherein the outrigger connecting portion has a rectangular cross section and has a sliding member on its upper surface, lower surface, and / or side surface thereof. The attachment according to any one of claims 1 to 4, further comprising a wheel for movement below the loading platform.

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