JPH0638873Y2 - 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 a pressing plate for luggage is obstructive during fork work, it is stowed upward. Regarding possible road stabilizers.

(Prior Art) During a cargo handling operation 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 of jump-up, for example,
Publication No. 9 (hereinafter referred to as the second 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 engagement between the hook and the pin is released by the above, and then the guide rod is raised to rotate the pressing plate downward to fold it to the storage position.

Further, the flip-up type load stabilizer disclosed in the second publication is configured such that an arm of a holding plate is rotatably pin-connected to a guide bar which is moved up and down along a guide rail, and is located above an arm connecting point of the guide bar. In addition to rotatably attaching one end of the support arm to the, the free end of the support arm is connected to the middle part of the arm by connecting pins that are attached and detached at the working position and the storage position, respectively. The rotational displacement from the use position to the storage position (or vice versa) is performed after the pin connecting the support arm and the holding plate arm is removed.

(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 official gazette, when jumping up the holding plate to the storage position or returning to the working position, once descend from the driver's seat and pull out the pin, return to the driver's seat to lift or return the holding plate, and then again. It is necessary to carry out the pin attaching / detaching work twice, that is, getting out of the driver's seat and inserting the pin, which compels the driver to perform an extremely troublesome work. In addition, since the holding plate is in the upright posture in the stored state, the portion where the pin should be attached / detached is at a high position, and the workability is poor.

Therefore, in the present invention, in the flip-up type road stabilizer which is advantageous in terms of the front field of view, the workability is reduced by reducing the number of times the connecting pin is detached and attached when the holding plate is jumped up to the storage position or returned to the working position. The purpose is to raise.

(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 pressing plate for pressing a load is rotatably attached to the upper part of a rail member that is lifted and lowered by a stabilizer cylinder, and the pressing plate is mounted in a horizontal position by a hoisting cylinder attached to the rail member. And the storage position in the upright posture.

The support arm for receiving the load for pushing the load has one end rotatably connected to a portion above the pressing plate rotation fulcrum of the rail member, and has a pin hole at the other end. A connecting pin that can be inserted into and removed from the pin hole of the support arm is provided on the upper surface of the pressing plate so that the connecting pin can be inserted and removed when the pressing plate is in the working position. An arm accommodating portion into which the tip portion of the support arm can be inserted when the pressing plate is jumped up to the accommodating position is formed on the front side of the attachment portion of the connecting pin.

(Operation) With the configuration described above, when the holding plate is in the working position, the connecting pin is inserted into the pin hole of the supporting arm, and the supporting arm is connected to the holding plate. Therefore, the load for pressing the load is received by the triangular truss structure including the holding plate, the support arm, and the rail member.

When switching the work clamp from the work position to the storage position, pull out the connecting pin from the pin hole of the support arm and then operate the flip-up cylinder to raise the work clamp. The other end of the support arm moves relatively along the upper surface of the holding plate due to the offset with respect to the center of rotation, and is forcibly pushed into the arm storage portion to be in the upright state, so that the holding plate is in the upright posture in the storage position. The stable state is maintained. That is, at the storage position in the upright posture, it is not necessary to connect the support arm and the pressing plate with the connecting pin.

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

As shown in FIG. 4, a pair of left and right rail holders 5 are erected and fixed on a lift bracket 1 which is moved up and down along a mast (not shown) of a forklift. Is mounted movably up and down via a roller (not shown). The left and right rail members 6 are connected to each other by the upper and lower tie plates 7. A stabilizer cylinder 8 for raising and lowering the rail member 6 is provided upright in the substantially central rear portion between the left and right rail members 6, and the stabilizer cylinder 8 is the rear surface of the finger bar 2 fixed to the front surface of the lift bracket 1. On the side, the lower end is fixed via a bracket 2a, and the upper end of the piston rod 9 is connected to the upper tie plate 7 of the rail member 6 via a bracket 10. 3 is a fork moored to the finger bar 2, and 4 is a backrest fixed to the finger bar 2.

Further, as shown in FIG. 1, FIG. 2 or FIG. 4, projection pieces 11 are formed on the upper front surfaces of the left and right rail members 6, and the projection pieces 11 are provided on the holding plate 12. The base ends of the two left and right arms 13 are attached via a support pin 14 so as to be vertically rotatable. Further, between the left and right rail members 6, in front of the stabilizer cylinder 8, a flip-up cylinder 15 for vertically displacing the holding plate 12 between a horizontal work position and an upright storage position is arranged vertically. The base of the flip-up cylinder 15 is pivotally attached to the lower tie plate 7 of the rail member 6 by the pin 17, and the upper end of the piston rod 16 is pivotally attached to the arm 13 of the holding plate 12 by the pin 18. It is worn.

That is, the holding plate 12 is rotated to the horizontal work position around the support pin 14 as shown in FIG. 1 when the hoisting cylinder 15 is extended, and is shown in FIG. 2 when the hoisting cylinder 15 is contracted. As shown, it can be jumped up to the upright storage position.

Further, as shown in FIGS. 1 and 2, one end (rear end) of each of the left and right support arms 19 that receives the pressing force when pressing the load by the pressing plate 12 is a fulcrum of rotation of the pressing plate 12. A pin 20 is rotatably connected to a part of the upper tie plate 7 of the rail member 6 that is offset slightly rearward and upward from a certain support pin 14. Further, as shown in FIG. 3, the rollers 23 are provided at the other ends (front ends) of the left and right support arms 19 via roller shafts 22 each having a pin hole 21 at the center.
Are rotatably mounted, and the rollers 23 are rotatably fitted into the left and right roller guides 24 having a groove-shaped cross section extending in the front-rear direction formed on the upper surface of the pressing plate 12 so as to correspond to the support arms 19. ing. The support arm 19 includes a mounting portion 19a for the rail member 6, a roller supporting portion 19b, rod portions 19c in which reverse screws formed at both front and rear ends are respectively screwed into the mounting portion 19a and the roller supporting portion 19b, and a loosening stopper. And a lock nut 19d for use with it, and has a structure in which the entire length can be adjusted by turning the rod portion 19c.

On the other hand, on the holding plate 12, as shown in FIG. 4, when the holding plate 12 is in the horizontal position of the working position, two left and right connections are provided for connecting the other end of the support arm 19 to the holding plate 12 side. A pin 26 is provided. As shown in FIG. 3, each connecting pin 26 is inserted into the pin hole 21 of the roller shaft 22 through the lock hole 25 formed on the rear side of the roller guide 24, thereby supporting arm.
Pin portion 26a for fixing 19 to roller guide 24 and presser plate 12
It comprises a rod portion 26b slidably penetrating a pin guide 27 fixed to the upper surface. The left and right pin guides 27 are formed in an arch-shaped cross section and extend in a direction orthogonal to the longitudinal direction of the roller guide 24, and the upper surface is open in almost half of the longitudinal direction.

In addition, a vertically long cylindrical pin receiving portion 26c is formed at the end of the rod portion 26b of each connecting pin 26.
By selectively engaging the two set holes 30a and 30b formed in the holding plate 12, the connecting pin 25 is supported by the supporting arm.
A lock pin 28 for holding the pin 19 at a position where it is inserted into the pin hole 21 and a position where it is pulled out is assembled in a state of being urged downward via a spring 29.

On the other hand, on the front end side of the roller guide 24, there is formed a box-shaped arm storage portion 31 into which the roller 23 including the roller support portion 19b of the support arm 19 enters when the pressing plate 12 is jumped up to the storage position. The arm housing 31 has an inner width equal to the outer diameter of the roller 23. In addition, in the upright position in which the holding plate 12 is jumped up to the stowed position, the holding plate is
The front surface of 12 is set to match the front surface of the backrest 4.

The present embodiment is configured as described above, and its operation will be described below.

FIG. 1 shows a state in which the hoisting cylinder 15 is fully extended and the presser plate 12 is in the horizontal work position. At this time, as shown by the solid line in FIG. 3, the pin portion 26a of the connecting pin 26 is shown.
Is inserted into the pin hole 21 of the support arm 19, the support arm 19 is connected to the roller guide 24, and the connection pin 26 is connected by engaging the lock pin 28 with the one set hole 30a of the holding plate 12. Held in position. Therefore, in this state, by appropriately operating the stabilizer cylinder 8, it is possible to perform a so-called stabilizer operation in which the holding plate 12 is moved up and down together with the rail member 6 to press the load on the fork 3. Then, the pressing load acting on the pressing plate 12 at the time of pressing the load is received by the triangular truss structure composed of the pressing plate 12, the support arm 19 and the rail member 6, and is distributed to each member. The load on the connecting portion is reduced.

Next, when the pressing plate 12 is not used, first the lock pin 28 is pulled out from the one set hole 30a and the connecting pin 2
By sliding 6 along the pin guide 27 and pulling out the pin portion 26a from the pin hole 21 of the support arm 19, the support arm
After the connection between 19 and the roller guide 24 is released, the lock pin 28 is engaged with the other set hole 30b (see the phantom line in FIG. 3). If the hoisting cylinder 15 is contracted in this state,
As shown in FIG. 2, the holding plate 12 is flipped up around the support pin 14 until the arm 13 contacts the front surface of the upper tie plate 7 of the rail member 6. That is, the holding plate 12 is flipped up to the storage position in the upright posture. At this time, presser plate
The support arm 19 and the pressing plate 12 that have been disconnected from the 12 side move relative to each other as their attachment points to the rail member 6 are vertically offset. That is, the roller 23 of the support arm 19 rolls forward along the roller guide 24, and in the storage position, the support arm 19 is in the upright state like the pressing plate 12, and the roller including the tip of the roller support portion 19b. 23 is an arm storage part 31 of the roller guide 24
It is forced into the inside. Thus, the holding plate 12 is stably held in the storage position without being connected by the connecting pin 26.

Since the holding plate 12 is aligned with the same vertical plane as the backrest 4 in this storage position, it can function as a load receiver when handling a tall load and prevent the load from collapsing.

To return the holding plate 12 from the stored position to the work position, the support arm 19 and the holding plate 12 are connected by the connecting pin 26 while the hoisting cylinder 15 is extended to a horizontal posture. By this, the pressing plate 12 can be fixed to the working position.

In this embodiment, the supporting arms 19 are two left and right,
It is possible to change to a single central type, and in some cases, the roller 23 may be omitted and the arm tip may be directly inserted into the arm storage portion.

(Effect of the Invention) As described in detail above, according to the present invention, when the holding plate is jumped up to the storage position, the tip of the support arm is forcibly pushed into the arm storage portion formed on the side of the holding plate. By inserting the pressing plate, the pressing plate can be held in a stable state at the storage position, and therefore, the connection between the support arm and the pressing plate side by the connecting pin becomes unnecessary. That is, it is sufficient that the work of removing the connecting pin is performed only in the work position where the holding plate is in the horizontal position, and therefore, when the holding plate is rotationally displaced from the working position to the storage position or from the storage position to the work position, the connection pin is connected. Since the work of attaching and detaching the pin is only required once, there is no need to take the trouble of twice as in the conventional case, and since the work of placing the connecting pin in the work position where the holding plate is in a horizontal position, work at low positions is possible. It is possible and the workability is good.

In addition, when the presser plate is set to the work position, the load pressing load can be distributed by the triangular truss structure of the support arm, the presser plate and the rail member, so the load load acting on the pins such as the connecting pin and the support pin. This is effective in reducing the size and weight of the parts related to the connecting portion.

[Brief description of drawings]

The drawings show an embodiment of the present invention, FIG. 1 is a side sectional view showing a state in which a holding plate is set to a working position, and FIG. 2 is a side sectional view showing a state in which the holding plate is jumped up to a storage position. 3 is a sectional view showing a structure of a connecting portion of a support arm to a holding plate, and FIG. 4 is an overall perspective view of a load stabilizer. 1 ... Lift bracket 5 ... Rail holder 6 ... Rail member 8 ... Stabilizer cylinder 12 ... Holding plate, 14 ... Support pin 15 ... Lifting cylinder, 19 ... Support arm 20 ... Pin, 21 ... … Pin hole 23 …… Roller, 24 …… Roller guide 26 …… Connecting pin, 31 …… Arm storage

Claims (1)

[Scope of utility model registration request] 1. A presser plate for pressing a load is rotatably attached to an upper portion of a rail member which is lifted and lowered by a stabilizer cylinder, and a hoisting cylinder having the presser plate attached to the rail member causes a horizontal work position and an upright posture. In the load stabilizer that is rotatably displaced to the storage position of the support arm, one end of the support arm that receives the load for pressing the load is rotatably connected to a portion above the pressing plate rotation fulcrum of the rail member, and the support arm is also supported. A pin hole is formed at the other end of the holding plate, and a connecting pin that can be inserted into the pin hole of the supporting arm is provided on the upper surface of the holding plate so that the pin can be inserted and removed when the holding plate is in the working position. The upper surface of
A load stabilizer for a forklift having an arm storage portion formed in front of the attachment portion of the connecting pin, into which the tip portion of the support arm can be inserted when the pressing plate is jumped up to the storage position.