JPH0211439Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a bale clamping device in a forklift for handling cargo such as raw cotton.

(Prior Art) As shown in FIGS. 2 and 3, a bale clamp device for a forklift includes a clamp base attached to a lift bracket 3 that is moved up and down along the left and right masts 2, 2 of a forklift 1. 10, a pair of left and right clamp arms 11, 11 are provided so as to be movable in the left and right directions, respectively, and the clamp arms 11, 11 are opened and closed by clamp cylinders to clamp the load and release the clamp. It is becoming possible to do this.

Therefore, the conventional bale clamp device merely functions as a bale clamp for cargo handling. Therefore, since the bale clamp device cannot be used for multiple purposes, the forklift can be used for multiple purposes by completely replacing the attachment to the lift bracket 2 of the forklift 1. Ta.

(Problems to be solved by the invention) When using the forklift for multiple purposes in the conventional technology described above, it is necessary to replace the entire attachment, which is a large-scale replacement work that takes many man-hours and time. The attachment itself is expensive and requires a large space to store the attachment. This is especially true for forklifts used primarily for bale clamping operations, where forklift operations are occasionally required, or when used in small-scale warehouses, factories, etc.
It is difficult to adopt the above-mentioned attachment due to its replacement, cost, storage space, etc. Therefore, in this industry, the above-mentioned problem occupies a large proportion and a solution is desperately needed. This is the current situation.

Therefore, in order to solve the above-mentioned problems, this invention aims to propose a bale clamp device that can easily attach and detach the fork member to the clamp arm provided on the clamp base. It is something.

(Means for Solving the Problems) In order to solve the problems in the above-mentioned conventional technology, this invention has an engagement groove on the upper surface of the pair of left and right clamp arms on the front surface of the clamp base that is attached to the lift bracket. At the same time, the fork member formed in a substantially L-shape is provided with an engagement protrusion that is removable from the engagement groove, and the engagement groove and the engagement protrusion are connected to the fork member on the outside or inside of the clamp arm. The gist of the configuration is that it can be selectively arranged.

(Function) According to the above-described means, the fork member is attached to the clamp arm by a simple operation of engaging the engagement protrusion of the fork member with the engagement groove of the clamp arm, and the fork member is attached to the clamp arm. The fork member is removed from the clamp arm by a simple operation of disengaging the engagement protrusion of the fork member from the engagement groove.

Further, by selectively arranging the fork member on the outside or inside of the clamp arm, the bale clamp device can be used for multiple purposes.

(Example) Hereinafter, an example of this invention will be described with reference to FIGS. 1 to 8. In FIGS. 2 and 3, which schematically illustrate a forklift equipped with a bale clamping device, left and right masts 2, 2 of a forklift 1 are shown.
A clamp base 10 is attached to the lift bracket 3 which is raised and lowered along the lift bracket 3. A pair of left and right clamp arms 11, 11 are provided on the front surface of the clamp base 10 so as to be movable in the left and right directions, and a clamp cylinder (not shown) is provided.
By opening and closing the clamp arms 11, 11, the cargo is clamped and unclamped.

Next, the clamp arm 11 will be described with reference to FIG. 1, which shows the clamp arm in a perspective view, and FIG. 4, which shows an enlarged cross-section of the main parts thereof. The clamp arm 11 is attached to the clamp base 1
It is made of a flat plate extending vertically and forwardly from the front surface of 0, and has a guide rail 12 at the rear end.
12 is fixed. In addition, guide rail 1
2 and 12 are slidably engaged with a rail holder (not shown) of the clamp base 10 in the left-right direction.

The upper end surface of the clamp arm 11 has a plurality of square-shaped engagement grooves 13 (four shown in the figure).
.about.13 are recessed in an array at approximately equal intervals (see FIG. 5). In addition, the clamp arm 11
At the lower part of the outer surface of
are each formed in a penetrating shape.

The lower end of the steel strip is approximately L as the fork part 16.
At the upper end of the fork member 15 bent into a letter shape, an engaging part 17 is formed that protrudes in a direction opposite to the fork part 16, and an engaging part 17 that projects downward is formed at the tip of the engaging part 17. It has a protrusion 18. Thus, the engaging protrusion 18 is engaged with the engaging groove 13 of the clamp arm 11 with the side surface of the fork member 16 substantially in close contact with the side surface of the clamp arm 11. Note that the fork member 15 is in close contact with the outer surface or inner surface of the clamp arm 11, and the fork member 15 is inserted into the engagement groove 1 of the clamp arm 11.
3 can be engaged. This fork member 1
At the bottom of 5 is a screw hole 14 of the clamp arm 11.
A corresponding through hole 19 is opened.

The fork member 15 is fastened to the clamp arm 11 by screwing a fixing bolt 20 into a screw hole 14 of the clamp arm 11 through a through hole 19.

Thus, the two fork members 15 are fixed to the clamp arm 11 by engaging the engagement protrusions 18 in appropriate engagement grooves 13, respectively, and by fixing bolts 20.

In addition, in the figure, 21 indicates a washer.

In the bale clamp device described above, when removing the fork member 15 from the clamp arm 11, loosen and remove the fixing bolt 20, and then move the fork member 15 upward to remove it from the engagement groove 13 of the clamp arm 11. It is sufficient to remove the engaging protrusion 18.

Conversely, when attaching the fork member 15 to the clamp arm 11, move the fork member 15 from above to below along the side surface of the clamp arm 11 to engage the engagement protrusion 18 in the engagement groove 13 of the clamp arm 11. After fitting, insert the fixing bolt 20 into the through hole 19.
through the screw hole 14 of the clamp arm 11. This causes the fork member 15 to be fastened to the clamp arm 11.

The fixing bolt 20 that fastens the fork member 15 to the clamp arm 11 is counterbore into the fork member 15 so that the head end face of the fixing bolt 20 is flush with the surface of the fork member 15. It is desirable to provide a section so that it can be fastened there. In addition, the engagement groove 13 and the engagement protrusion 1
8, the fork member 15 is sufficiently held on the clamp arm 11, so it is also possible to omit the fixing bolt 20.

Next, some usage examples of a forklift equipped with the above bale clamp device will be listed.

(1) Fork member 1 on the outside of clamp arm 11
If 5 and 15 are not installed, conventional bale clamping work can be performed.

(2) Fork member 15, 1 on clamp arm 11
5 is installed, it is possible to fork the cargo 4 on the side of the forklift 1, so-called intercepting work (see Fig. 6).

(3) Clamp base 1 for lift bracket 3
When the fork members 15, 15 are attached to the clamp arm 11 of a fully rotary bale clamp device in which a rotator is installed, side damping is performed by utilizing the rotation of the clamp arm 11 due to the operation of the rotator. Must be able to perform the work (see Figure 7). Note that since the rotator is well known, its explanation will be omitted.

(4) Place the fork member 1 inside the clamp arm 11.
By attaching the fork members 15 and 15, as shown in FIG. In this state, the load 4 is intercepted, and the other clamp arm 1 is placed at the place where the load 4 is placed.
1 to open (shift to the left in the figure) and push the baggage 4 into that location.

As described above, this bale clamp device allows the forklift 1 to be used for multiple purposes.

In addition to the above embodiment, another example will be explained with reference to FIGS. 9 and 10.

In the upper and lower end surfaces of the clamp arm 22 of this example, upper and lower engagement grooves 23, 23 each having a square cross section are recessed along the longitudinal direction thereof. Further, a plurality of rectangular grooves 24 (four in the figure) are formed in the side wall of the upper engagement groove 23 at approximately equal intervals.

A fork portion 26 is provided at the upper end and center of the fork member 25, which is formed by bending a steel band material into a substantially L-shape.
The upper and lower engaging portions 27, 2 protrude in opposite directions.
7 is formed. The distal ends of both the engaging portions 27, 27 have engaging protrusions 28, 28, respectively, which protrude in directions facing each other. However,
Both the engagement protrusions 28, 28 are inserted into the respective engagement grooves 23, 28 of the clamp arm 22, with the side surface of the fork member 25 being in close contact with the side surface of the clamp arm 22.
23. The upper engaging portion 27 of the fork member 25 has a concave groove 2 of the clamp arm 22.
A screw hole 29 corresponding to No. 4 is opened.

The fork member 25 is fixed to the clamp arm 22 by screwing the fixing bolt 30 into the screw hole 29 and by bringing the tip of the fixing bolt 30 into contact with the bottom surface of the groove 24 of the clamp arm 22. ing.

Thus, two fork members 25 are fixed to the clamp arm 22 in a positioned manner via fixing bolts 30.

In addition, in the figure, 31 indicates a washer.

In the bale clamp device described above, when removing the fork member 25 from the clamp arm 22, after loosening and removing the fixing bolt 30 (or after loosening the bolt until the tip is pulled into the engaging portion 27), By moving the fork member 25 forward, both engaging grooves 23, 2 of the clamp arm 22
It is sufficient to remove both the engaging protrusions 28, 28 from 3.

On the other hand, when attaching the fork member 22 to the clamp arm 22, move the fork member 22 from the front to the rear along the side surface of the clamp arm 22, and attach the engaging protrusions 28, 28 to the clamp arm 22.
After engaging both the engagement grooves 23, 23, the fixing bolt 30 is screwed into the screw hole 29, and the fixing bolt 3
0 is brought into contact with the concave groove 24 of the clamp arm 22. This causes the fork member 25 to be fixed to the clamp arm 22.

The forklift equipped with the bale clamp device described above can be used for multiple purposes, similar to the embodiments described above.

(Effect of the invention) In other words, the gist of this invention is the configuration described in the column of "Means for solving the problem" mentioned above, and the engaging protrusion of the fork member is engaged with the engaging groove of the clamp arm. The fork member is attached to the clamp arm by doing this, and the fork member is removed from the clamp arm by disengaging the engagement protrusion of the fork member from the engagement groove of the clamp arm. Therefore, compared to the conventional method of replacing the entire attachment for the lift bracket of a forklift, it is possible to easily replace the fork member with the clamp arm provided on the clamp base attached to the forklift. Can be attached and detached. Therefore, the number of man-hours and time required for replacement is reduced, the replacement work is simplified, and the fork members can be manufactured at low cost, and the space for storing the fork members can be reduced. . This is especially true for forklifts used primarily for bale clamping operations, where forklift operations are occasionally required.
It is also useful when used in small-scale warehouses, factories, etc.

Further, according to the present invention, by selectively arranging the fork member on the outside or inside of the clamp arm, for example, by arranging the fork member on the outside of the clamp arm, it is possible to intercept the cargo, and by arranging the fork member on the inside of the clamp arm. This allows the bale clamp device to be used for multiple purposes, such as pushing cargo.

In addition, by providing an engagement groove on the upper surface of the clamp arm in which the engagement protrusion of the fork member is engaged and disengaged,
No bearing is caused during normal bale clamping work. For example, if the engagement groove is provided on the clamping surface of the clamp arm, unevenness may be formed on the clamping surface, which may interfere with normal bale clamping operations. According to the present invention, such defects can be avoided. is resolved.

[Brief explanation of the drawing]

1 to 8 show an embodiment of this invention, in which FIG. 1 is a perspective view of a clamp arm of a bale clamp device, and FIG. 2 is a schematic side view of a forklift equipped with a bale clamp device. Fig. 3 is a schematic plan view of the same, Fig. 4 is an enlarged sectional view of the main parts, Fig. 5 is an exploded perspective view of the bale clamp device, and Figs. 6 to 8 show examples of use of a forklift. The schematic front view, FIGS. 9 and 10 show other examples of the embodiment, FIG. 9 is a perspective view of the clamp arm of the bale clamp device, and FIG. 10 is an enlarged sectional view of the main part. . 1... Forklift, 10... Clamp base, 11, 22... Clamp arm, 13, 23
...Engagement groove, 15, 25...Fork member, 1
8, 28...Engaging protrusion.

Claims (1)

[Scope of utility model registration request] Engagement grooves are provided on the upper surfaces of the pair of left and right clamp arms on the front surface of the clamp base that is attached to the lift bracket, and an engagement protrusion that can be engaged with and detached from the engagement grooves is provided on the fork member formed in an approximately L-shape. A bale clamp device for a forklift, wherein the engaging groove and the engaging protrusion are formed so that the fork member can be selectively placed on the outside or inside of the clamp arm.