JPH04182300A - Claw fixing structure of fork lift - Google Patents

Abstract

PURPOSE:To prevent rattle by fixing a supporting member having an inclined surface in the back of a lower end part of a claw, and providing an inclined surface, of which rear lower part is opened, in a lower end of a finger bar lower and fixing an engaging member having an inclined surface which abuts on both the inclined surfaces. CONSTITUTION:A supporting member 3 having an inclined surface 3d is fixed to the back of a lower end of a claw 1. An inclined surface 5a, of which rear lower part is opened, is formed in a lower end of a finger bar lower 5. An engaging member 17 is fitted between the supporting member 3 and the finger bar lower 5 for fixation. Namely, the engaging member 17 is formed into a projected shape formed with a base part 17a, a tip part 17b for abutting on the claw 1 and an upper and a lower inclined surfaces 17c, 17d, and the engaging member 17 is fastened to the claw 1 with a bolt 23 to make the inclined surfaces 17c, 17d abut on the inclined surfaces 3a, 5a, and rattle of the claw 1 is thereby eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a fixing structure for a pawl that is supported and fixed to the front end of a forklift.

2. Description of the Related Art As a conventional forklift claw fixing structure, the example shown in FIG. 3 is generally employed. 1 in the figure is a pawl that is supported and fixed to the front end of the forklift, and a mounting portion 1a extending from the lower end of this pawl 1 in the front FR direction is integrally formed with a bend. Outside luggage is loaded.

Reference numeral 3 denotes a support member integrally welded near the lower end of the rear RR side surface of the pawl 1, and this support member 3 is disposed on the lower side of the finger bar lower 5 to which the pawl 1 is attached. A similar support member that engages with the finger bar upper (not shown) is welded near the upper end of the rear RR side surface of the claw 1, and this upper support member (not shown) and the support shown in the figure The claw 1 is attached to an arbitrary position on the upper and lower finger bars by means of the member 3.

Also, in order to prevent rattling noise from occurring between the claw 1 and the finger bar during forklift operation,
As shown in the figure, the lower end of the finger bar lower 5 is provided with an inclined surface 5a that is open diagonally downward at the rear, while the two ends of the support member 3 are provided with an inclined surface 5a of the finger bar lower 5 slightly A protrusion 3c having inclined surfaces 3a facing each other with a distance α is provided, and the tightening bolt 11 is inserted from the rear RR direction of the bolt insertion hole 7 formed in the protrusion 3c with a lock nut 9 interposed therebetween. A configuration is adopted in which the tip end portion 11a of the tightening bolt II is brought into contact with the inclined surface 5a of the finger bar lower 5. (Regarding the rattling prevention structure of such forklift claws, refer to 5ilent published by Nissan Motor Co., Ltd.
Fo'fk catalog, NewHO1・HO2S e
See R.I.E.S., as of May 1986.

) According to such a forklift claw fixing structure, a plurality of bolt insertion holes 7 are provided in advance in the protrusion 3c of the support portion 3, and the bolts are tightened in the presence of lock nuts 9 in the bolt insertion holes 7. This tightening bolt 11 is screwed together with the bolt 11.
The tip end 11 a of the fin carver lower 5 is connected to the inclined surface 5 a of
By coming into contact with the claw 1 when working with a forklift,
It is possible to prevent the "rattle sound" that tends to occur between the finger bar and the finger bar.

Problems to be Solved by the Invention However, in such a conventional forklift claw fixing structure, the area of the tip 11a of the tightening bolt 11 that comes into contact with the inclined surface 5a of the finger bar lower 5 is limited. During long-term use, the tip 11a of the tightening bolt 11 wears out, resulting in the above-mentioned rattling noise.
In order to prevent this, it is necessary to periodically loosen the lock nut 9 and retighten the tightening bolt 11, which is a disadvantage in that the operation is cumbersome. Furthermore, in order to secure the above-mentioned additional tightening allowance, the bolt head 11b of the tightening bolt 11 protrudes by a certain length in the rear RR direction, so the bolt head 11b interferes with other members such as pallets during cargo handling by a forklift. I'm used to doing it.

Furthermore, in order to arrange the protrusion 3C of the support member 3 on the finger bar lower 5 at the position shown in the figure, a notch (not shown) is provided in advance at an appropriate position on the finger bar lower 5, and from within this notch. After inserting the protrusion 3c of the support member 3, the claw 1 must be moved to an arbitrary position on the left or right, so the attachment of the claw 1 to the finger bar is cumbersome.

Therefore, the present invention solves the problems of the conventional forklift pawl fixing structure and eliminates the "rattle noise".
There is no need to add additional tightening bolts on a regular basis to prevent this, there is no interference with other parts due to the protruding port head of the tightening bolts, and it is easy to attach the claws to the finger bar. The purpose of this invention is to provide a fixing structure that can be implemented in the following manner.

Means for Solving the Problems The present invention is intended to achieve the above objects (forklift)
- A fixed structure in which cargo handling claws are attached to appropriate positions of the finger bar upper and the finger bar lower at the front end, and a hook that engages with the finger bar upper is fixed to the back surface near the upper end of the claw; A supporting member having an inclined surface is fixed to the back surface of the lower end of the claw, and an inclined surface whose rear diagonally downward direction is open is provided at the lower end of the finger bar lower, and the inclined surface of the supporting section and the finger This is a forklift claw fixing structure in which an engaging member having an inclined surface that contacts the inclined surface of the bar lower is fixed to the claw.

According to this forklift fixing structure, when the claw is installed between the finger bar upper and the finger bar lower, the hook fixed near the first end of the claw is engaged with the finger bar upper, and the engaging member By inserting the engaging member between the support member and the finger bar lower and fixing the engagement member to the claw, the slope formed at the lower end of the finger bar lower and the slope formed at the support part are connected to each other. The engaging members make surface contact with each other.

Therefore, the contact area between the engaging member and the finger bar lower,
The contact area between the engaging member and the supporting member is both increased, and based on this contact action, it is possible to obtain the effect that "rattle noise" does not occur between the pawl and the finger bar during forklift operation. .

EXAMPLE Hereinafter, an example of a forklift claw fixing structure according to the present invention will be described in detail, with the same reference numerals used for the same components as those of the conventional structure.

In the configuration shown in FIG. 1, reference numeral 1 denotes a cargo handling claw that is supported and fixed to the front end of a forklift. It is formed. When the forklift is operated, a load (not shown) is loaded onto the loading section 1a.

A hook 15 is integrally welded to the back surface of the claw 1 near the upper end 1b. At the end of the rear RR side of this hook 15, locking pieces 1 and 5a are provided which protrude downward. The protruding locking piece 13a is engaged.

Furthermore, a support member 3 is integrally welded to the lower part of the rear RR side surface of the claw 1. This support member 3 is formed with an inclined surface 3d having a shape in which one side is opened diagonally backward,
Further, step portions 3e and 3f are formed around the inclined surface 3d.

On the other hand, at the lower end portion of the finger bar lower 5 shown by the imaginary line in FIG. 1, an inclined surface 5a having a shape that is open diagonally downward at the rear is formed.

Reference numeral 17 denotes an engagement member that is fitted and fixed between the support member 3 and the finger bar lower 5. This engaging member includes a base portion 17a and a tip portion 17 that comes into contact with the rear RR side surface of the claw 1.
b, and a lower inclined surface 17c formed between the base 17a and the tip 17b.

17d and a member having a substantially convex cross section,
The lower inclined surface 1.7c is set to contact the inclined surface 3d of the support member 3, and the upper inclined surface 17cl is set to contact the inclined surface 5a of the finger bar lower 5.

This engaging member 17 has a screw hole 19 passing through it in the front-rear direction.
19 is opened and the claw 1 faces the engaging member 17.
A similar screw hole 21.21 is opened therein. In the case of this embodiment, counterbore holes 27 and 27 are provided on the rear RR side surface of the base 17a.

According to this configuration, the claw 1 is connected to the fin carver upper 13.
When attaching the finger bar lower 5 to the finger bar lower 5, first the locking piece 1 of the hook 15 welded near the upper end 1b of the claw 1
5a to any position of the locking piece 13a of the finger bar upper 13, and then as shown in the enlarged cross-sectional view of the main part in FIG. and the finger bar lower 5, and can be screwed into the screw hole 19 of the engagement member 17 and the screw hole 21 of the pawl.
23.23 and washer 25.25]
7 is screwed onto claw 1 and fixed.

At this time, the upper and lower inclined surfaces 17c and 17d formed on the engagement member 17 are aligned with the inclined surface 3d of the support member 3 and the inclined surface 5a of the finger bar lower 5, and The tip portion 17b of the engaging member 17 is in contact with the step portion 3e and the step portion 5e of the finger bar lower 5, and the step portion 3f of the support member 3 and the base portion 1 of the engaging member 17 are in contact with each other.
7a is in contact with it.

Therefore, the inclined surfaces 17C and 17d formed between the base 17a and the tip 17b of the engaging portion A'17 are in surface contact with the inclined surface 3a of the support member 3 and the inclined surface 5a of the finger bar lower 5, respectively. As a result, the engaging portion 4'' 17 is fitted and fixed to the support member 3 and the finger bar lower 5 in a state in which they are in full surface contact with each other.

Therefore, according to this embodiment, by interposing the engaging member 17 having a substantially convex cross section between the supporting member 3 and the finger bar lower 5, "rattle" can be heard between the pawl 1 and the finger bar during forklift operation. ” does not occur, and since the contact area of the engaging member 17 with the supporting member 3 and the finger bar lower 5 is large, the engaging member 17 and the tightening can be easily maintained even during long-term use. The wear phenomenon of the bolt 23 is eliminated, and the periodic work of tightening the tightening bolt 23 is not required. Furthermore, in order to secure the above-mentioned additional connection allowance, it is not required that the bolt head 23a of the tightening bolt 23 protrudes toward the rear RR direction, and the bolt head 23a interferes with other parts such as pallets during cargo handling operations using a forklift. I'm not afraid.

In particular, by providing the counterbore holes 25.25 on the rear RR side surface of the base 17a of the engaging member 17 as in this embodiment,
The bolt head 23a can be hidden within the engaging member control 7, and the connecting portion between the support member 3 and the finger bar lower 5 can be made into a flat surface as shown in FIG.

Furthermore, according to this embodiment, after engaging the locking piece 15a of the hook 15 at an appropriate position of the finger bar upper 13, when fixing the finger bar lower 5 and the support member 3, the locking piece 15a is set in advance as in the conventional case. Since it is not necessary to provide a notch at an appropriate position on the finger bar lower 5, the operation of attaching the claw 1 to the finger bar is simplified.

Effects of the Invention According to the forklift claw fixing structure according to the present invention described in detail above, when the claw is attached to the finger bar, the engaging member is inserted between the support member and the finger bar lower. By fixing the finger bar lower to the claws, the inclined surfaces formed on the supporting member on the inclined surface formed at the lower end of the finger bar lower come into surface contact with the engaging members, so that the engaging members and the finger bar lower The contact area between the two and the contact area between the engaging member and the support side are both increased, and based on this contact action, the generation of "rattle" between the claw and the finger bar during forklift operation is effectively reduced. It can be prevented.

Furthermore, with the expansion of the contact area mentioned above, there will be no wear of the contact area during long-term use, and there will be no need to periodically increase the number of tightening bolts as in the past, simplifying the operation. It has the effect of being

Furthermore, since the bolt head of the tightening bolt does not protrude toward the rear, there is no risk of the bolt head interfering with other parts during cargo handling operations using a forklift.

Furthermore, when attaching the pawl to the finger bar lower, there is no need to provide a notch for inserting the support member into the appropriate position of the finger bar lower, so the work when attaching the pawl becomes easier. demonstrate.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a main part showing an embodiment of a forklift claw fixing structure according to the present invention, FIG. 2 is a sectional view of the main part, and FIG. 3 is a main part showing an example of a conventional claw fixing structure. FIG. DESCRIPTION OF SYMBOLS 1... Claw, 1a... Mounting part, 3... Support member, 5...
...Finger bar lower, 3d...Slope, 13...Finger bar upper, 15...Hook, 13a, 1.5
a...Locking piece, 17...Engagement member, 17a...Base, 17b...Tip, 17c, 17d...Slope, 2
3...Tightening bolt.

Claims (1)

[Claims] (1) A fixed structure in which cargo handling claws are attached to appropriate positions on the finger bar upper and finger bar lower at the front end of the forklift, and a hook that engages with the finger bar upper is fixed to the back surface near the upper end of the claws. On the other hand, a supporting member having an inclined surface is fixed to the back surface of the lower end of the claw, and an inclined surface whose rear diagonally downward direction is open is provided at the lower end of the finger bar lower, so that the inclined surface of the supporting member and the finger bar A claw fixing structure for a forklift, characterized in that an engaging member having an inclined surface that contacts an inclined surface of a lower is fixed to the claw.