JPH0231510Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to industrial vehicles such as forklifts and shovel loaders, and more specifically to a support device that allows a counterweight to be freely attached and detached.

(Prior Art) FIG. 3 shows an example of a counterweight support device in a conventional forklift.As shown in the figure, the counterweight 31, which is formed into an almost upside-down L-shape, has a horizontal portion on the side. When placed on the frame 32 and locked by the locking part 33, the vertical part covering the rear part of the vehicle body is fixed to the rear frame 34 (usually a rear axle bracket) via a hook 35. That is,
A hook 3 is attached to the rear lower part of the rear frame 34 via a pin 36 so as to be rotatable around a horizontal axis.
5 to a notch 38 formed on the side of the vertically long opening 37 in the vertical part of the counterweight 31.
The hook 35 is held in the locking position or the release position by replacing the stopper pin 39.

Although not shown in the drawings, another known fixing method is to fix the vertical portion of the counterweight to the rear frame with bolts.

By the way, since the counterweight 31 is arranged so as to cover both sides of the rear part of the engine room, if the counterweight 31, which is suspended by a crane or the like, swings carelessly when it is being attached or detached, it may damage the relatively rear part of the engine room. There is a risk of colliding with the radiator, muffler 40, etc. located on the side and damaging them. Therefore, conventionally, a guard member 41 made of a bar is provided at the rear upper part of the side frame 32 to cover the muffler 40 and the like to protect them.

(Problems to be solved by the invention) In the conventional method in which the vertical part of the counterweight 31 is fixed by the hook 35,
Vertical opening 3 in the vertical part of the counterweight
7 and notches 38 need to be formed, and the bolt-based fixing method has disadvantages in that it is troublesome to attach and detach the bolts and requires the preparation of special tools. Apart from this, it was necessary to specially install a guard member to protect the muffler and the like.

In view of the above-mentioned problems, the technical problem of the present invention is to construct a counterweight support device using a guard member as a protection member for a muffler or the like.

(Means for solving the problem) The technical means for solving the above problem is to place and lock the horizontal part of the counterweight, which is formed in an almost upside-down L shape, on the upper surface of the rear end of the side frame. On the other hand, in an industrial vehicle of the type in which the inner surface of the vertical part that extends downward from the horizontal part and covers the rear part of the vehicle body is in contact with the rear frame, a vertical part that extends downward from the horizontal part and covers the rear part of the vehicle body is in contact with the rear frame. attached to the guard member so as to be reversible between a front position and a rear position; in the rear position, the counterweight is restrained from upward movement by opposing the bottom surface of the exhaust opening formed in the counterweight; The present invention includes a restraining member that releases the restraint at the front position, and a stopper capable of holding the restraining member at least in the rear position.

(Function) When the counterweight is mounted on the vehicle body, its forward and backward movement is restrained by the locking portions of the side frames, and its backward rotation is prevented by the rear frame. If the member faces rearward and is restrained from moving upward by engaging the lower surface of the exhaust opening of the counterweight, the counterweight is prevented from moving in all directions and is prevented from falling off the vehicle body. Ru. Further, if the restraining member is reversed so that it faces forward, upward movement is permitted, and therefore the counterweight can be attached and detached in this state.

(Example) Hereinafter, an example of the present invention will be specifically described based on the drawings. In the figure, 1 indicates a frame constituting the main body of a forklift, and the frame 1 is made up of a pair of left and right side frames 2 extending in the front-rear direction, and a cross member 3 that connects them at appropriate locations. Further, a member 5 on which a radiator and a muffler 4 (only the muffler is shown) placed on the rear side of the engine room is horizontally fixed to the rear lower part of the side frame 2.

Reference numeral 6 designates a counterweight that is approximately in the shape of an inverted L, and is placed at the rear of the vehicle body. The horizontal part of the counterweight 6 has a cavity 7 having a gate shape when viewed from the front, and has recesses 8 on the left and right walls of the cavity 7, respectively, and the recesses 8 are formed on the left and right side frames 2. By being mounted on the side frame 2 so as to be engaged with the locking portion 9, movement in the front-rear direction and the left-right direction is prevented.
Further, the vertical part of the counterweight 6 is suspended so as to cover the rear of the vehicle body, and its inner surface abuts against the rear axle bracket 10 fixed to the central rear surface of the member 5 in the width direction, so that it does not rotate rearward. is being prevented. In addition, an opening 11 having a rectangular cross section is provided horizontally in the front-rear direction at the rear central portion of the counterweight 6, mainly for discharging hot air.

Reference numeral 12 denotes a guard member that protects the muffler 4 and the like, and includes a pair of left and right side plates 13 erected on the rear upper surfaces of the left and right side frames 2 so as to extend slightly rearward;
3 and a top plate 14 that connects the upper ends of the two. A protrusion 14a is provided at approximately the center of the Atsupa plate 14 to protrude rearward.
There is a restraining plate 1 equipped with a hook 15 at the tip to prevent the counterweight 6 from moving upward.
6 is mounted so as to be horizontally rotatable via a vertical shaft 17. That is, the restraining plate 16 can be reversed between a front position where the hook 15 is on the front side and a rear position where the hook 15 is on the rear side.
It is set so that upward movement of the counterweight 6 is restrained by protruding inside and facing the lower surface thereof, and the restraint is released in the forward position.

Further, the protruding portion 14a of the atspa plate 14
The stopper plates 18 disposed on the left and right sides of the stopper plate 18 are attached at their upper ends to a bracket 19 fixed to the protrusion 14a via a common pin 20 so as to be rotatable around the horizontal axis. In this state, the restraining plate 16 is held in the front position or the rear position by coming into contact with both side surfaces of the restraining plate 16.

This embodiment is configured as described above,
Therefore, when the counterweight 6 is mounted on the rear part of the vehicle body, the horizontal recess 8 mounted on the side frame 2 engages with the locking part 9, preventing movement in the front-rear and left-right directions, and preventing movement in the vertical direction. Since the lower inner surface of the rear axle bracket 10 contacts the rear end surface of the rear axle bracket 10 and is prevented from rotating rearward, in this state, when the restraining plate 16 is set at the rear position as shown by the solid line in FIG. Since the hook 15 opposes the lower surface of the opening 11 and prevents upward movement, the counterweight 6 cannot move in any direction. In this way, the counterweight 6 is fixed at a specified position on the vehicle body and is prevented from falling off, but in this case, the restraining plate 16 is held at the rear position by the stopper plate 18, so it may come off inadvertently. There's no fear.

In addition, when detaching the counterweight 6 from the vehicle body, insert your hand into the opening 11 from the rear of the counterweight 6, rotate the stopper plate 18 upward as shown in the imaginary line, and press the stopper plate 18. If the counterweight 16 is reversed forward around the vertical axis 17 as shown by the imaginary line in the figure, the upper restraint of the counterweight 6 will be released, so by lifting the counterweight 6 with a crane or the like in this state, You can do this.

When the counterweight 6 is lifted or suspended by a crane or the like, even if the counterweight 6 swings (especially toward the front),
By abutting the rear end of the guard member 12 on the inner surface of the counterweight 6 before the muffler 4, a collision with the muffler 4 can be avoided and the muffler can be protected.

(Effects of the invention) As detailed above, the present invention supports the counterweight by attaching a restraining member for preventing the counterweight from falling off to the guard member for protecting the muffler etc. from the counterweight. Since it is used as a part of the device, the structure is simpler and the operation when attaching and detaching is easier compared to conventional devices in which the guard member and fall prevention member were separately installed. Moreover, since the upper movement of the counterweight is prevented by the restraining member by suppressing the lower surface of the exhaust opening, which is always provided in a normal counterweight, a special No machining is required, and any standard counterweight can be used, making it highly versatile.

[Brief explanation of drawings]

1 and 2 show an embodiment of the present invention, with FIG. 1 being a side sectional view showing the rear part of a forklift, and FIG. 2 being a perspective view showing the counterweight separated. Figures 3 and 4 show conventional examples;
The figure is a side sectional view, and FIG. 4 is a sectional view taken along the line -- in FIG. 2...Side frame, 4...Muffler, 6...Counterweight, 8...Recess, 9...Locking part, 11...
Opening, 12... Guard member, 15... Hook, 16
...Suppression plate, 18...Stopper plate.

Claims (1)

[Scope of utility model registration request] The horizontal part of the counterweight, which is formed in an almost upside-down L-shape, rests on and locks the top surface of the rear end of the side frame, while the inner surface of the vertical part that extends downward from the horizontal part and covers the rear of the vehicle body is mounted on the rear end of the side frame. In an industrial vehicle that is in contact with the frame, the guard member is attached to the rear upper surface of the side frame so as to cover the upper part of the muffler, etc., so as to be reversible between the front position and the rear position. A restraining member that opposes the bottom surface of an exhaust opening formed in the counterweight to restrain the upward movement of the counterweight and releases the restraint in the forward position; and a restraining member that holds the restraining member at least in the rearward position. A counterweight support device for an industrial vehicle, which is provided with a stopper.