JPH0638872Y2 - Forklift Road Stabilizer - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a load stabilizer for a forklift, and more specifically, when fork work, when the pressing plate for luggage is obstructed, it is stowed upward. Regarding the road stabilizer that can do.

(Prior Art) During the cargo handling work by a forklift with a load stabilizer, for example, when handling a tall load, the holding plate may interfere with the cargo handling work. For this reason, conventional load stabilizers have been provided in which a pressing plate for luggage is folded and stored as needed, or is lifted up and stored.
As the former folding type road stabilizer, for example, Japanese Utility Model Publication No. 57-594 (hereinafter referred to as the first publication) is disclosed.
For the latter type, for example,
Publication (hereinafter, referred to as the second publication), JP-B-52-29400 (hereinafter referred to as the third publication), or JP-B-6 position-
No. 24559 (hereinafter referred to as the fourth publication) can be mentioned.

In the folding type load stabilizer disclosed in the first publication, a holding plate is rotatably attached to a guide rod side which is a supporting member, and a hook provided on the guide rod side is always attached to a pin provided on the holding plate side. Stopping the presser plate to hold it in a horizontal position for work, and lowering the fork to a predetermined position while lowering the presser plate to the descending end, further lowering the fork and the presser plate integrally. The hook and the pin are disengaged from each other, and the guide rod is raised thereafter to rotate the pressing plate downward so that the pressing plate can be folded.

In addition, in the flip-up type load stabilizer disclosed in the second and fourth publications, a pressing plate is rotatably attached to a support member, and a lock pin is replaced with two lock holes formed on the support member side. The work position can be fixed in the horizontal position and the storage position in the upright position. Further, in the third publication, a holding plate is rotatably attached to a support member, and a holding hydraulic plate is provided on the supporting member to move the holding plate between a horizontal working position and an upright storage position. It is designed so that it can be rotationally displaced.

(Problems to be solved by the invention) However, in the conventional load stabilizer described above,
In the case of the folding type disclosed in the first publication, there is a problem that the front view is obstructed by the pressing plate when the pressing plate is folded and the safety and workability are deteriorated. Also, the second
In the case of the gazette and the fourth gazette, when the holding plate is jumped up to the storage position or returned to the working position, it is necessary to descend from the driver's seat each time, and the pins must be replaced at a high position. Further, in the case of the third publication, the holding plate is hoisted up and held by the hoisting cylinder by the hoisting cylinder, so that the holding plate is caused by oil leakage of the cylinder or swaying during traveling. There is a problem in that it fluctuates.

Therefore, in view of the above problems, the present invention is a forklift truck that can perform the rotational displacement of the holding plate to the storage position and the working position on the driver's seat, and that can stably hold the holding plate in the storage position. The purpose is to provide a road stabilizer of.

(Means for Solving the Problems) The present invention is configured as follows to solve the above problems.

In a load stabilizer of a forklift, a holding plate for holding a load on a fork is mounted on an upper part of a rail member that is lifted and lowered by a stabilizer cylinder, and the holding plate is rotated between a horizontal working position and an upright storage position. A flip-up cylinder for displacing is installed.

An engaging member is formed on the pressing plate, and a rail holder that guides the vertical movement of the rail includes the engaging member when the pressing plate is lowered by the stabilizer cylinder while being lifted by the jumping cylinder. A stopper member that engages with the mating member is formed.

(Operation) According to the present invention configured as described above, by operating the flip-up cylinder, the pressing plate can be rotationally displaced between the horizontal work position and the upright storage position. Then, when the pressing plate is jumped up at the rising end and then lowered, the engaging member of the pressing plate engages with the stopper member provided on the rail holder side, which causes the movement of the pressing plate in the front-rear direction. Be detained. That is, the holding plate is stably held in the storage position.

(Embodiment) An embodiment of the present invention will be specifically described below with reference to the drawings.

As shown in FIG. 1, a pair of left and right rail holders 4 are erected and fixed on a lift bracket 1 which is moved up and down along a mast (not shown) of a forklift, and rail members 5 are respectively attached to the rail holders 4. Is mounted movably up and down via a roller (not shown). The left and right rail members 5 are connected to each other by the upper and lower tie plates 6. A stabilizer cylinder 7 for raising and lowering the rail member 5 is provided upright between the left and right rail members 5 substantially at the rear side of the center member. The stabilizer cylinder 7 is provided with a finger bar 2 fixed to the front surface of the lift bracket 1. The lower end is fixed via the bracket 2a on the back side, and the upper end of the piston rod 8 is connected to the upper tie plate 6 of the rail member 5 via the bracket 9. Reference numeral 3 is a fork moored to the finger bar 2.

In addition, protrusions 10 are formed on the upper front surfaces of the left and right rail members 5, and the bases of the two left and right arms 12 provided on the pressing plate 11 are vertically attached to the protrusions 10 via support pins 13. Is rotatably attached to. The stabilizer cylinder 7 is provided between the left and right rail members 5.
A flip-up cylinder 14 for vertically displacing the holding plate 11 between the horizontal work position and the upright storage position is disposed on the front side in a vertical direction, and the base of the flip-up cylinder 14 is located at the base of the rail member 5. The lower tie plate 6 is pivotally attached to the lower tie plate 6 by a pin 16, and the upper end of the piston rod 15 is held by the holding plate 11.
Is pivotally attached by a pin 18 to a tie bar 17 connecting the left and right arms 12 of. That is, when the hoisting plate 11 is extended, the holding plate 11 is rotated about the support pin 13 to the horizontal work position as shown in FIG.
At the time of contraction of 14, as shown in FIG. 3, it can be jumped up to the storage position in the upright posture.

The tie bar 17 connecting the arm 12 of the holding plate 11 is provided with two left and right engaging members 19 formed in the shape of an arm. The engaging member 19 makes the holding plate 11 in a horizontal posture. At some time, as shown in FIG. 2, the arm 12 is extended upward so as to be substantially orthogonal to the arm 12, and at this time, the front surface of the tip abuts against the back surface of the upper tie plate 6 of the rail member 5 so that Hold the holding plate 11 in a horizontal position.

Further, when the pressing plate 11 is flipped up, the engagement member 19 is converted into a posture in which it extends substantially horizontally rearward as shown in FIG. 3, and when it is lowered in this posture. The left and right rail holders 4 are engageable with left and right stopper members 22 in the shape of a substantially rectangular block provided on the front surface of a tie beam 21 that couples the upper back surfaces of the rail holders 4 to each other.
Specifically, an engaging portion 20 having an engaging surface that is substantially L-shaped when the pressing plate 11 is flipped up is formed at the tip of the engaging member 19, and the engaging portion 20 is arranged vertically with respect to the stopper member 22. It is configured to engage with both sides in the front-back direction.

This embodiment is constructed as described above. Therefore, as shown in FIG. 2, the hoisting cylinder 14 is extended and the holding plate is pressed.
In the normal state where 11 is in the horizontal position, the engaging member 19
The pressing plate 11 is regulated in a horizontal posture by the front surface of the tip of the pressing member abutting against the rear surface of the upper tie plate 6 of the rail member 5. In this state, the back surface of the engaging member 19 has a space A between the engaging member 19 and the stopper member 22. Therefore, when the pressing plate 11 is moved up and down by the expansion and contraction operation of the stabilizer cylinder 7, the engaging member 19 is in front of the stopper member 22. The stabilizer work can be carried out without any problems. Note that the horizontal posture of the pressing plate 11 may be restricted by the stroke end of the flip-up cylinder 14 instead of the engagement member 19.

Next, the operation of storing the holding plate 11 when the load stabilizer is not used will be described. First, the stabilizer cylinder 7 is extended to hold the rail member 5 together with the holding plate 11
To the highest. Then, the hoisting cylinder 14 is contracted to the stroke end to hoist the holding plate 11 upward with the support pin 13 of the arm 12 as a fulcrum, as shown in FIG. Thereafter, when the holding plate 11 is lowered together with the rail member 5 by the stabilizer cylinder 7, the engaging portion 20 of the engaging member 19 is moved to the stopper member as shown in FIGS. 1 and 4.
Engage with 22. Since this engagement is an engagement in both the up-down direction and the front-back direction, this engagement causes the holding plate
11 is completely prevented from moving in the stowed storage position. That is, the holding plate 11 is prevented from wobbling at the storage position.

5 to 7 show modifications of the engaging portion between the engaging member 19 and the stopper member 22, respectively.
First, as shown in FIG. 5, the tip of the engaging portion 20 of the engaging member 19 is formed into a block shape, while an L-shaped engaging surface is formed on the stopper member 22 side. Further, FIG. 6 shows that the engaging portion 20 of the engaging member 19 has an inverted U shape, while the stopper member 22 is formed in a simple protrusion shape, and further shown in FIG. In the above, the engaging portion 20 of the engaging member 19 has a simple protrusion shape, while the stopper member 22 has a U-shape.

And in any of the examples and the modified examples,
It is desirable that the engaging portion 20 of the engaging member 19 and the engaging surface of the stopper member 22 are formed into tapered surfaces, and at that time, the degree of engagement between both members is increased, and the engaging is facilitated.

(Effect of the Invention) As described in detail above, according to the present invention, when the pressing plate is stowed upward, the engaging member provided on the pressing plate side is replaced with the stopper member provided on the rail holder side. Since the movement of the presser plate in the front-back direction can be restricted by engaging it,
Even if oil leaks from the hoisting cylinder, it can prevent the work clamp from wobbling in the stored condition and maintain a stable posture.The operation of switching the work clamp from the working condition to the retracted condition can be performed. Since it can be realized by operating the stabilizer cylinder and the flip-up cylinder on the seat, the switching work is greatly simplified without the troubles of the conventional pin replacement type.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention, FIG. 1 is an overall perspective view of a load stabilizer, FIG. 2 is a side view when a holding plate is in a working state, FIG. 3 and FIG. Are side views showing the storage mode of the holding plate, FIG. 5, FIG. 6 and FIG.
The drawings are explanatory views showing modifications of the engaging member and the stopper member, respectively. 1 …… Lift bracket 4 …… Rail holder 5 …… Rail member 7 …… Stabilizer cylinder 11 …… Holder plate 12 …… Arm 14 …… Raising cylinder 19 …… Engaging member 22 …… Stopper member

Claims (1)

[Scope of utility model registration request] 1. A holding plate for holding a load on a fork on an upper portion of a rail member that is lifted and lowered by a stabilizer cylinder, and the holding plate is rotationally displaced to a working position in a horizontal posture and a storage position in an upright posture. In a load stabilizer having a hoisting cylinder for causing the hoisting plate to have an engaging member, the hoisting plate is moved to the storage position by the hoisting cylinder on the rail holder that guides the vertical movement of the rail member. A load stabilizer for a forklift provided with a stopper member that engages with the engaging member when lowered by a stabilizer cylinder in a raised posture.