JPH0423913Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a counterweight locking device for locking and fixing a removable counterweight installed in a forklift.

(Prior Art) As shown in FIG. 3, in the conventional forklift, a fork 2 is disposed at the front of a vehicle body frame 1 so as to be operable up and down, and a counterweight 3 is provided at the rear of the vehicle body frame 1. In order to separate the counterweight 3 from the vehicle body frame 1 when carrying the forklift into the ship, the counterweight 3 is removably mounted on the vehicle body frame 1, and the counterweight 3 is detachably mounted on the vehicle body frame 1. A counterweight locking device 5 for locking and fixing the counterweight 3 is provided.

A conventional example of the counterweight locking device 5 is as follows:
As shown in FIG. 4, a stopper 7 with a handle 7a is provided opposite to a positioning plate 6 attached to the vehicle body frame 1 via brackets 6a, 6a so as to be movable forward and backward and rotatable.
A receiving groove 8 is provided opposite to the removable counterweight 3 placed close to the rear of the counterweight, and the handle 7a is rotated to move the stopper 7 into the receiving groove 8 and locked, thereby positioning the handle 7a. By locking in the locking groove 9a provided in the plate 6, the vehicle body frame 1
At the same time, the handle 7a rotates with the stopper 7, and the stopper 7 is moved toward the vehicle body frame 1, and the handle 7a is fitted into the locking groove 9b. stop,
It has a structure in which the counterweight 3 can be opened and separated.

(Problems with the prior art) The conventional counterweight locking device has a counterweight 3 mounted on the vehicle body frame 1.
Handle 7 of stopper 7 locked in receiving groove 8 of
a is fitted and locked in the locking groove 9a of the positioning plate 6, so the handle 7a may come off from the locking groove 9a due to vibrations during driving, or the handle 7a may be pulled. The counterweight 3 may be hooked and come off from the locking groove 9a.
There are problems such as the risk of the parts falling off.

(Purpose of the invention, means for solving the problems) This invention is an invention to deal with the above-mentioned problems, and is a device that uses a pair of front and rear brackets to attach the counterweight to the vehicle body frame on which the counterweight is removably mounted. A stopper is slidably and rotatably engaged with a receiving groove provided in the counterweight, and a handle protruding from the stopper is fitted into a locking groove of a positioning plate attached via the bracket. In the forklift counterweight locking device, one end is fixed to one of the brackets by surrounding the stopper, and the other end is fixed to the handle, so that the handle is placed on the side of the locking groove. The feature is that the stopper is provided with a spring that urges the stopper toward the receiving groove side. By adding a spring that urges the receiving groove, the stopper that is locked in the receiving groove of the counterweight is prevented from being disengaged, improving the locking performance and reliability of the counterweight. An object of the present invention is to provide a locking device for a forklift counterweight that solves the problems such as.

(Embodiment) An embodiment of the present invention is shown in Figs. 1 and 2. In the figures, 1 is a forklift vehicle body frame, and 13 is a vehicle body frame 1 that is removably placed close to the rear side of the vehicle body frame 1. It is a counterweight that has been
A positioning plate 16 is fixed to the vehicle body frame 1 via brackets 16a, 16a, and a handle 17 is attached to the positioning plate 16.
The stopper 17 with a is attached to the bracket 16a, 1
The counterweight 13 is provided with a receiving groove 18, and the stopper 17 is slidably inserted into the stopper 6a, that is, slidably moved toward the counterweight 13 and rotatably inserted into the positioning plate 16.
It is set up opposite.

Furthermore, a compression spring 2 is attached to the stopper 17.
0 (coil spring) is fitted and attached, and both ends of the compression spring 20 are fixed to the bracket 16a and the handle 17a. At the same time, the handle 17a is urged to rotate into locking grooves 19a and 19b provided in the positioning plate 16, that is, in the direction of the arrow B.

(Function) Since the present invention has the above-described configuration, when the handle 17a is removed from the locking groove 19b, the stopper 17 is urged by the compression spring 20 toward the counterweight 13 and is advanced and received. Groove 1
8 and is locked, and the handle 17 is rotated in the direction of the arrow B by the compression spring 20.
a is fitted into the locking groove 19a of the positioning plate 16, and as shown in FIG. fixed,
Since the stopper 17 is biased toward the receiving groove 18 by a compression spring 20, the stopper 17 is prevented from escaping from the receiving groove 18. Also, due to the rotational bias of the compression spring 20, the locking groove 19
The handle 17a inside the handle 17a is prevented from coming off, and the locking performance and reliability of the counterweight 13 are improved.

Also, the stopper 17 is rotated together with the handle 17a against the spring bias, and is moved toward the vehicle body frame 1 side (left side in the figure), and the handle 17a is moved to the locking groove 19b.
When the handle 17a in the locking groove 19b is inserted, the counterweight 13 is released and can be removed and separated from the vehicle body frame 1 as shown in FIG.
is also prevented from escaping by the rotational bias of the compression spring 20.

(Effect of the invention) As described above, according to the invention, on the vehicle body frame 1 on which the counterweight 13 is removably mounted,
A stopper 17 is slidably and rotatably engaged with a receiving groove 18 provided in the counterweight 13 via a pair of front and rear brackets 16a, 16a, and a handle 1 projects from the stopper 17.
The locking grooves 19a, 1 of the positioning plate 16 to which the brackets 7a are attached via the brackets 16a, 16a.
9b, the stopper 17 is surrounded and one end is fixed to one of the brackets 16a, and the other end is fixed to the handle 16a.
7a, and the handle 17a is inserted into the locking groove 19.
a, 19b side, and the stopper 1
7 toward the receiving groove 18 side;
0, the stopper 17 is always urged by the spring 20 in the rotational direction and forward/backward direction, so that the handle 17a may come off from the locking grooves 19a, 19b due to vibrations during traveling, or There is no fear that the handle 17a will be hooked and come off the locking groove 19a and the counterweight 13 will fall off, so the locking and fixing performance and reliability of the counterweight 13 are significantly improved, and the counterweight 13 can be easily released. This has the effect of improving operational performance.

[Brief explanation of the drawing]

Fig. 1A is a side view of the main parts of a forklift showing an embodiment of the present invention, and Fig. 1B is a - of Fig. 1A.
A side view of the part, Figure 2 is an explanatory diagram of the action of Figure 1A,
Figure 3 is a side view of the forklift, Figure 4A is an enlarged side view of the part shown in Figure 3, and Figure 4B is Figure 4A.
It is a side view of the BB section of FIG. DESCRIPTION OF SYMBOLS 1...Vehicle frame, 13...Counterweight, 16...Positioning plate, 17...Stopper, 17a...Handle, 18...Receiving groove, 20...
...Spring (compression spring).

Claims (1)

[Scope of utility model registration request] A stopper that removably engages with a receiving groove provided in the counterweight through a pair of front and rear brackets is provided on the vehicle body frame on which the counterweight is removably mounted, so that the stopper is slidable and rotatable. In the counterweight locking device for a forklift, in which a handle protruding from the stopper is locked in a locking groove of a positioning plate attached via the bracket, one end is attached to one side of the bracket, surrounding the stopper. A counterweight for a forklift, characterized in that it is provided with a spring that is fixed and has its other end fixed to the handle so as to bias the handle toward the locking groove and bias the stopper toward the receiving groove. Locking device.