JP6831169B1 - Attachments for forklifts and forklifts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attachment for a forklift and a forklift capable of appropriately suspending a load according to the dimensions of the load. SOLUTION: A forklift attachment 2 is independently attached to each of a pair of left and right forks 12 included in a forklift, and extends in a front-rear direction X along a fork insertion portion 20A into which the fork 12 is inserted. The long portion 20B is provided with a long portion 20B, and the long portion 20B is provided with a cord-shaped body mounting hole 26 into which a cord-shaped body R for suspending a load L is attached. There are multiple. [Selection diagram] FIG. 7

Description

The present invention relates to an attachment for a forklift for lifting a load, and a forklift provided with the attachment.

Patent Document 1 describes an attachment to be attached to a fork of a forklift. The attachment includes a horizontal frame that is inserted into a pair of left and right forks, the horizontal frame is provided so as to hang between the two forks, and hanging straps are provided at both ends of the horizontal frame.

Japanese Unexamined Patent Publication No. 2012-1299

However, when the attachment of Patent Document 1 is attached to a fork, the distance between the pair of left and right forks is fixed, so that it is difficult to hang a plurality of types of loads having different dimensions in the left and right directions. In addition, it was difficult to hang a load having a large size in the front-rear direction. That is, there is a problem that the load cannot be properly hung according to the size of the load.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an attachment for a forklift and a forklift capable of appropriately suspending a load according to the dimensions of the load.

In order to solve the above problem, the fork lift attachment according to claim 1 is independently attached to each of the pair of left and right forks included in the fork lift so as to be along the fork insertion portion into which the fork is inserted and the fork. The long portion is provided with a long portion extending in the front-rear direction, and the long portion is a cord-like portion to which a long plate portion and a short plate portion provided below the fork insertion portion and a cord-like body for suspending a load are attached. A body mounting hole is provided, and a plurality of the cord-shaped body mounting holes are provided at intervals in the front-rear direction, and the long plate portion has a plurality of the cord-shaped body mounting holes opening in the left-right direction. It extends in the front-rear direction, the short plate portion extends in the left-right direction so as to intersect the long plate portion, and the long plate portion and the short plate portion are placed on a flat mounting surface so as to be self-supporting. It is characterized by being configured in .

The forklift attachment according to claim 2 is the forklift attachment according to claim 1, wherein the long portion is configured to project forward from the front end of the fork.

The forklift attachment according to claim 3 is the forklift attachment according to claim 1 or 2, wherein a plurality of fork insertion portions are provided at intervals in the front-rear direction.

The forklift attachment according to claim 4 is the forklift attachment according to any one of claims 1 to 3 , wherein the forklift attachment includes a pin penetrating the fork and the fork insertion portion, and the fork insertion portion has a pin. It is characterized in that a pin removal prevention structure for preventing the pin from falling out from the fork and the fork insertion portion is provided.

The forklift according to claim 5 is characterized by including the forklift attachment according to any one of claims 1 to 4 .

According to the present invention, the load can be appropriately suspended according to the dimensions of the load.

It is a side view of the forklift equipped with the attachment for the forklift which concerns on one Embodiment of this invention. (A) is a plan view of the forklift attachment according to the same embodiment, and (B) is a left side view thereof. It is a front view of the attachment for a forklift which concerns on the same embodiment. It is sectional drawing which shows the pin removal prevention structure which concerns on this embodiment. FIG. 5 is a cross-sectional view taken along the line BB in FIG. (A) and (B) are schematic views showing a state in which a forklift attachment hangs a plurality of types of loads having different dimensions in the left-right direction. (A) and (B) are schematic views showing a state in which a forklift attachment suspends a plurality of types of loads having different dimensions in the front-rear direction and the up-down direction.

The forklift 1 which is a cargo handling vehicle according to the embodiment of the present invention will be described with reference to the drawings. The front-back direction X, the left-right direction Y, and the up-down direction Z in the drawing are linear directions orthogonal to each other.

FIG. 1 shows a left side view of the forklift 1.
As shown in FIG. 1, the forklift 1 includes a vehicle body 11 provided with a driver's seat 11A and the like, a pair of left and right forks 12 provided so as to be able to move up and down with respect to the vehicle body 11, and a pair of left and right forks 12, respectively. It is equipped with an attachment 2 for a forklift that is independently mounted on the vehicle. Hereinafter, the attachment 2 for a forklift is referred to as "attachment 2".

The fork 12 includes a blade 12A extending in the horizontal direction and a shank 12B extending in the vertical direction to support the load L. The blade 12A is inserted into the attachment 2 and is configured to prevent the attachment 2 from falling off from the fork 12 by a pin removal prevention structure 3 (see FIG. 4) described later.

Further, the forklift 1 includes a fork shift mechanism (not shown) that adjusts the distance between the pair of left and right forks 12. The fork shift mechanism is configured to operate manually, electrically or hydraulically.

FIG. 2A is a plan view of the attachment 2, FIG. 2B is a left side view of the attachment 2, and FIG. 3 is a front view (front view) of the attachment 2.
As shown in FIGS. 2 (A), 2 (B), and 3, the attachment 2 is front and rear along the fork insertion portion 20A into which the blade 12A of the fork 12 is inserted and the blade 12A of the fork 12. A long portion 20B extending in the direction X and a pin 30 for connecting the fork 12 and the attachment 2 are provided.

The fork insertion portion 20A includes an annular portion 21 that opens in the front-rear direction X and a fork cover portion 22 that covers the blade 12A of the fork 12. A plurality of fork insertion portions 20A are provided at intervals in the front-rear direction X, and the fork insertion portions 20A arranged on the front side are provided with a pin removal prevention structure 3 including a bolt support portion 22A.

The annular portion 21 is fixed to the long portion 20B by welding. A convex portion 21A arranged on the lower surface of the blade 12A is formed on the annular portion 21 of the fork insertion portion 20A arranged on the front side. The fork cover portion 22 is fixed to the inner circumference of the annular portion 21 by welding, and is configured to project forward and backward from the annular portion 21. By inserting the fork 12 into the fork insertion portion 20A, the fork cover portion 22 is placed on the upper surface of the blade 12A. Further, when the fork cover portion 22 comes into contact with the right side surface and the left side surface of the blade 12A, the movement of the attachment 2 in the left-right direction Y (movement to the left and movement to the right) with respect to the fork 12 is restricted. It is configured in. The bolt support portion 22A is fixed to the fork cover portion 22 by welding and projects upward from the fork cover portion 22. The bolt support portion 22A supports a second bolt 51 (see FIG. 3), which will be described later.

The long portion 20B includes a flat plate-shaped horizontal plate portion 23 having a horizontal plane, a flat plate-shaped long plate portion 24A and a short plate portion 24B having a vertical surface provided below the horizontal plate portion 23, and a horizontal plate portion 23. It is provided with a reinforcing plate portion 25 provided on the upper part of the above. The long portion 20B is configured to project forward from the front end of the fork 12. Further, the long portion 20B is provided with a cord-like body mounting hole 26 into which a cord-like body R (see FIG. 1) for suspending the load L is attached (see FIG. 2 (B)).

The horizontal plate portion 23 is fixed to the fork insertion portion 20A by welding. The long plate portion 24A and the short plate portion 24B form a vertical plate portion provided perpendicular to the horizontal plate portion 23, and are fixed to the horizontal plate portion 23 by welding. The long plate portion 24A extends in the front-rear direction so as to have a right side surface and a left side surface, and the short plate portion 24B is provided so as to intersect the long plate portion 24A perpendicularly. The attachment 2 is configured to stand on its own by placing the long plate portion 24A and the short plate portion 24B on a flat mounting surface. The reinforcing plate portion 25 extends in the front-rear direction X and is provided at intervals in the left-right direction Y, and is fixed to the horizontal plate portion 23 and the long plate portion 24A by welding. The cord-shaped body mounting holes 26 are formed in the elongated plate portion 24A, and are provided in plurality at intervals in the front-rear direction X. It is preferable that three or more cord-shaped body mounting holes 26 are provided. In the present embodiment, three cord-shaped body mounting holes 26 are provided at the front end portion of the long portion 20B, and the long portion 20B is provided. One is provided at the rear end .

The pin 30 and the pin removal prevention structure 3 will be described with reference to FIGS. 3 and 4. FIG. 4 is a cross-sectional view of a portion shown by line AA in FIG.

As shown in FIGS. 3 and 4, the pin 30 is provided with a columnar pin shaft portion 31 and a pin head 32 provided at the upper end of one end of the pin shaft portion 31 and having a diameter larger than that of the pin shaft portion 31. And have.

The diameter of the pin shaft portion 31 is smaller than the diameter of the through hole H1 formed in the blade 12A and smaller than the diameter of the through hole H2 formed in the fork cover portion 22. The pin shaft portion 31 penetrates the fork 12 and the attachment 2 by being inserted into the through holes H1 and H2. In this way, the pin 30 is inserted into the blade 12A of the fork 12 and the fork insertion portion 20A of the attachment 2. Hereinafter, the fork 12 and the attachment 2 are referred to as "connection target members".

The pin head 32 is formed of a flat plate-shaped long plate, and is fixed to the pin shaft portion 31 by welding. The diameter of the pin head 32 is larger than the diameter of the through hole H1 and larger than the diameter of the through hole H2. When the pin head 32 comes into contact with the upper surface of the fork cover portion 22, the movement of the pin shaft portion 31 downward in the axial direction (vertical direction Z) is described.

The attachment 2 includes a pin disconnection prevention structure 3 that prevents the pin 30 inserted through the connection target member from falling out of the connection target member.
The pin removal prevention structure 3 includes a first bolt 41 and a first nut 42, 43 fitted to each other, and a second bolt 51 and a second nut 52, 53 fitted to each other.

The first bolt 41 and the first nuts 42, 43 are arranged below the blade 12A. The first bolt 41 penetrates the pin shaft portion 31 and is fixed to the pin shaft portion 31 by tightening the first nuts 42 and 43. The shaft diameter of the first bolt 41 is smaller than the diameter of the through hole H3 formed in the pin shaft portion 31, and the first bolt 41 is fixed without being screwed into the pin shaft portion 31.

The second bolt 51 and the second nuts 52 and 53 are arranged above the pin head 32. The second bolt 51 penetrates the bolt support portion 22A and is fixed to the bolt support portion 22A by tightening the second nuts 52 and 53. The shaft diameter of the second bolt 51 is smaller than the diameter of the through hole H4 formed in the bolt support portion 22A, and the second bolt 51 is fixed to the bolt support portion 22A without being screwed.

When attaching the attachment 2 to the fork 12, the blade 12A is inserted into the fork insertion portion 20A, and then the pin shaft portion 31 is inserted into the through holes H1 and H2. Then, after inserting the pin shaft portion 31 into the through holes H1 and H2, the first bolt 41 and the first nut 42, 43 are fixed to the pin shaft portion 31, and the second bolt 51 and the second nut are fixed to the bolt support portion 22A. 52 and 53 are fixed.

FIG. 5 is a cross-sectional view of a portion shown by line BB in FIG. In FIG. 5, the pin 30 is not shown in cross section, and the bolt support portion 22A, the second bolt 51, and the like are not shown.

As shown in FIG. 5, the upper surface of the blade 12A comes into contact with the lower surface of the fork cover portion 22, so that the attachment 2 is suspended from the fork 12. The distance between the first bolt 41 and the first nuts 42, 43 and the blade 12A is configured to be larger than the distance between the convex portion 21A and the blade 12A. When the pin 30 moves upward with respect to the fork 12 together with the fork insertion portion 20A, the convex portion 21A makes the lower surface of the blade 12A faster than the first bolt 41 and the first nuts 42, 43 come into contact with the lower surface of the blade 12A. The impact generated on the first bolt 41 and the first nuts 42 and 43 is alleviated.

With reference to FIGS. 6A and 6B, an example of how to suspend the load L when a plurality of types of loads L having different dimensions in the left-right direction Y are suspended by the attachment 2 will be described.

As shown in FIG. 6A, when the dimension of the load L in the left-right direction Y is small, the attachment 2 attaches both ends of the load L by adjusting so that the distance between the pair of left and right forks 12 is small. Lift properly. Further, as shown in FIG. 6B, when the dimension of the load L in the left-right direction Y is large, the attachment 2 can be attached to both ends of the load L by adjusting so that the distance between the pair of left and right forks 12 is large. Lift the part properly.

With reference to FIGS. 7A and 7B, an example of how to suspend the load L when the load L having different dimensions in the front-rear direction X and the vertical direction Z is suspended by the attachment 2 will be described.

As shown in FIG. 7A, when the dimensions of the load L in the front-rear direction X and the vertical direction Z are small, the two cord-like shapes provided on the rear side are narrowly spaced among the plurality of cord-like body mounting holes 26. By attaching the cord-shaped body R to the body mounting hole 26, the attachment 2 appropriately lifts the load L with the load L located near the vehicle body 11. Further, as shown in FIG. 6B, when the dimensions of the load L in the front-rear direction X and the vertical direction Z are large, the two cord-shaped body mounting holes 26 having a wide interval among the plurality of cord-shaped body mounting holes 26 By attaching the cord-like body R to the load L, the load L is appropriately lifted.

According to the present invention, the following effects can be obtained.
(1) Since the attachment 2 is independently attached to each of the pair of left and right forks 12, the load L can be appropriately suspended by adjusting the distance between the forks 12 according to the dimensions of the load L in the left-right direction. Can be done. Further, the long portion 20B extending in the front-rear direction X along the fork 12 is provided with a cord-shaped body mounting hole 26 to which the cord-shaped body R for suspending the load L is attached, and the cord-shaped body mounting hole 26 is provided in the front-rear direction. A plurality of X are provided at intervals. Therefore, the load L can be appropriately suspended by attaching the cord-shaped body R to any one or more of the plurality of cord-shaped body mounting holes 26 according to the dimensions of the load L in the front-rear direction X and the vertical direction Z. it can. Therefore, the load L can be appropriately suspended according to the dimensions of the load L.

(2) Since the long portion 20B is configured to project forward from the front end of the fork 12, a load L having a long dimension in the front-rear direction X can be appropriately hung.

(3) Since a plurality of fork insertion portions 20A are provided at intervals in the front-rear direction X, the stability of the attachment 2 attached to the fork 12 can be improved while reducing the size of the fork insertion portion 20A.

(4) The long portion 20B is provided so as to extend perpendicularly to the long plate portion 24A and the flat plate-shaped long plate portion 24A extending in the front-rear direction X and having the cord-like body mounting hole 26 formed therein. Since it is provided with a flat plate-shaped short plate portion 24B, the attachment 2 can stand on its own.

(5) Since the fork insertion portion 20A is provided with a pin removal prevention structure 3 for preventing the pin 30 from coming off from the fork 12 and the fork insertion portion 20A, the attachment 2 is prevented from falling off from the fork 12. be able to.

(6) Since the forklift 1 includes attachments 2 that have the effects of (1) to (5), the load L can be appropriately lifted and conveyed.

The present invention is not limited to the above embodiment, and the above configuration can be changed. For example, the following changes can be made and implemented, or the following changes can be combined and implemented.

-The pin 30 is in a state where the first bolt 41 and the first nuts 42 and 43 are fixed to the pin shaft portion 31 and the second bolt 51 and the second nuts 52 and 53 are fixed to the bolt support portion 22A. When the pin head 32 moves upward with respect to the member to be connected, the first nut 43 may come into contact with the blade 12A without contacting the second nut 53.

-The pin 30 may be turned upside down. That is, the pin head 32 may be arranged below the blade 12A, and the first bolt 41 and the first nuts 42, 43 may be arranged above the fork cover portion 22.

-The arrangement and number of the cord-shaped body mounting holes 26 may be changed as appropriate. For example, the long portion 20B may have two cord-like body mounting holes 26. In order to improve the stability of the forklift 1 when lifting the load L, it is preferable that the cord-shaped body R is attached to the cord-shaped body mounting hole 26 arranged at the rear.

1 Forklift 2 Forklift attachment 3 Pin removal prevention structure 12 Fork 20A Fork insertion part 20B Long part 24A Long plate part 24B Short plate part 26 Cord-shaped body mounting hole 30 Pin X Front-rear direction

Claims (5)

It is installed independently on each of the pair of left and right forks of the forklift.
The fork insertion part into which the fork is inserted and
A long portion extending in the front-rear direction along the fork is provided.
The elongated portion, the includes a long board portion and Tan'ita portion provided below the fork insertion portion, and a cord-like body mounting hole wick member is attached hanging the load,
A plurality of the cord-like body mounting holes are provided at intervals in the front-rear direction .
The long plate portion has a plurality of cord-like body mounting holes that open in the left-right direction and extends in the front-rear direction, and the short plate portion extends in the left-right direction so as to intersect the long plate portion.
An attachment for a forklift, characterized in that the long plate portion and the short plate portion are configured to stand on their own by being placed on a flat mounting surface . The forklift attachment according to claim 1, wherein the long portion is configured to project forward from the front end of the fork. The forklift attachment according to claim 1 or 2, wherein a plurality of fork insertion portions are provided at intervals in the front-rear direction. A pin that penetrates the fork and the fork insertion portion is provided.
The fork insertion portion according to any one of claims 1 to 3 , wherein the fork insertion portion is provided with a pin removal prevention structure for preventing the pin from coming off from the fork and the fork insertion portion. Attachment for forklift. A forklift that includes the forklift attachment according to any one of claims 1 to 4 .

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