JPS6246718Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a removable fork fixing device in a forklift.

PRIOR ART In the case of a forklift, the fork is sometimes replaced with another attachment depending on the content of the work, so the fork is usually removably attached to the finger bar. That is,
Conventionally, as shown in FIG. 6, a set piece 6 is inserted laterally between a lower aft 3 and a lower finger bar 5 while an uppuff finger bar 4 is engaged with an uppuff 2 of a fork (only one side is shown) 1. After inserting the fork 1 further, the stoppers 19 are secured to both end faces of the set piece 6 in the insertion/removal direction with bolts 20 so as to contact the side end faces of the lower shaft 3, respectively, thereby attaching the fork 1 to the finger bar 4,
It is set to be fixed at 5. Therefore, when attaching and detaching the fork 1, a special tool is required for attaching and detaching the stopper, and it is time-consuming and has the disadvantage that the fork is not easy to attach and detach.

Purpose of the invention The purpose of the present invention is to eliminate the above-mentioned conventional drawbacks and provide a fork fixing device for a forklift that can be easily attached and detached.

Structure of the Invention The present invention provides a set piece for fixing a fork that is inserted and removed between a lower shaft and a lower finger bar, and a stopper that can abut against the side end surface of the lower shaft is formed on both end surfaces of the set piece in the insertion and removal direction. At the same time, one of the stoppers can be rotated between a position that allows the set piece to be inserted and removed and a position that prevents the set piece from being removed.

Example 1 This will be explained based on FIGS. 1 to 4. In the case of a removable fork, as shown in FIG. A required gap for detaching and removing the fork is maintained between the lower hook 3 formed at the lower part of the back surface of the fork 1 and the locking part 5a formed at the lower end of the lower finger bar 5, and the set piece 6 is interposed in the gap. The fork 1 is fixed to the finger bars 4 and 5 by means of the fork 1.

A fork fixing set piece 6 inserted between the lower finger bar 5 and the lower finger bar 5 from the side is inserted between the locking portion 5a of the lower finger bar 5 and the lower finger bar 3 as shown in FIG. It is formed in a substantially inverted shape so that it can correspond to each engagement surface of the lower hook 3, and its both end surfaces in the insertion/removal direction prevent the set piece 6 from coming out (fixed) by coming into contact with the side end surfaces of the lower hook 3. Stoppers 7 and 8 are provided for this purpose. One of the stoppers 7 is a fixed stopper that is fixed to the end face of the set piece 6 by welding or the like (or may be integrally molded), and has a handle 9 on the outer surface for attaching and removing the piece. The other stopper 8 is formed to have a similar shape to the set piece 6 and is slightly smaller, and is attached at one end to be rotatable in the vertical direction via a collar 11 by a support pin 10. This allows the movable stopper 8 to An inclined position that aligns with the end face of the set piece (see the imaginary line in Fig. 2), which is a position where insertion and removal are permitted without contacting the lower hook 3;
An almost horizontal position offset from the end face of the set piece as a pull-out prevention position where it can come into contact with the set piece (see solid line in Figure 2)
It is said that it can be displaced as follows.

Further, a torsion spring 13 is housed in a spring chamber 12 formed in a part around the mounting hole of the support pin 10, and the torsion spring 13 is hooked at one end to the set piece 6 and at the other end to the movable stopper 8. 13
Therefore, a downward rotational force is applied to the movable stopper 8, and the movable stopper 8 always has a protrusion 14 protruding from its end on the rotation fulcrum side in contact with a stopper pin 15 protruding from the end face of the set piece 6. It is held at the withdrawal prevention position defined by the contact. A positioning plate 16 is integrally formed on the upper edge of one side of the end face of the set piece to define a position where the movable stopper 8 is allowed to be inserted and removed.

This embodiment is configured as described above,
Therefore, when attaching and detaching the fork 1 to the finger bars 4 and 5, the set piece 6 is attached and detached by grasping the handle 9 with one hand and using the other hand to move the movable stopper 8 against the torsion spring 13 to the insertion/removal permitted position. This can be done by inserting or withdrawing it between the lower shaft 3 and the lower finger bar 5 under rotational displacement. Furthermore, when the fork 1 is fixed by inserting the set piece 6 to the position where the fixed stopper 7 contacts the side end surface of the lower shaft 3, the movable stopper 8 is pulled out by the torsion spring 13 and comes into contact with the side end surface of the lower shaft 3. Since the set piece 6 is rotated to the blocking position, it is prevented from being removed by both stoppers 7 and 8, and is maintained in the fixed position regardless of vibrations (see FIG. 4).

Embodiment 2 As shown in FIG. 5, in this embodiment, a through hole 17 is formed in the set piece 6 in a direction parallel to the insertion/removal direction thereof, and both ends of a round bar 18 are loosely inserted through the through hole 17. The stoppers 7 and 8 are made by bending each of the two pieces. Therefore, the set piece 6 can be inserted and removed by rotating the stoppers 7 and 8 to the almost horizontal position that allows insertion and removal, and in the inserted state, that is, the fork fixed state,
The stoppers 7 and 8 are rotated to a vertical position by their own weight and come into contact with the side end surface of the lower shaft 3 to prevent the set piece 6 from coming off.

In the illustrated embodiment, the fork 1 is moored to the finger bars 4 and 5 via a pair of upper and lower hooks 2 and 3, but for the upper side, the upper finger bar 4 is moored to a removable rod with a circular cross section. There is no problem in changing to a type in which the upper part of the fork fits into this.

Effects of the Invention As detailed above, according to the present invention, the set piece that is interposed between the lower shaft of the fork and the finger bar to fix the fork can be attached and detached without using any tools.
Not only the set piece but also the fork can be easily attached and detached, and the attachment and detachment work is extremely effective in improving efficiency.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the first embodiment of the present invention; Fig. 2 is a perspective view showing the first embodiment of the present invention;
3 is a sectional view showing the mounting part of the movable stopper, FIG. 4 is a side view showing the set piece installed, and FIG. 5 is a perspective view showing the set piece of Example 2. FIG. 6 is a perspective view showing a conventional example. 1...Fork, 2...Atsupafutsuku, 3...
Roafutsuk, 4... Hot Puff Ingerber, 5...
...lower finger bar, 6...set piece,
7, 8...stoppa.

Claims (1)

[Scope of utility model registration request] A set piece for fixing the fork is removably inserted from the side in the gap between the engagement surface between the lower shaft formed at the lower back of the fork and the finger bar, which is removably moored to the finger bar, and the fork is moored to the finger bar in a removable manner. In the forklift designed to be fixed, a stopper for preventing the set piece from coming off is formed on both end faces in the insertion/removal direction of the set piece, which can come into contact with the side end face of the lower shaft, and at least one of the two stoppers is formed. 1. A fork fixing device for a forklift, characterized in that it is rotatably mounted and can be moved between a position allowing insertion and removal of the set piece into the gap and a position preventing removal.