JP2589571Y2 - Outrigger folding structure for forklift - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding structure of an outrigger for a forklift, and more particularly, to ensure that the outrigger can be easily folded and unfolded and has sufficient rigidity without a gap which causes play. The present invention relates to a possible forklift outrigger folding structure.

[0002]

2. Description of the Related Art A lightweight forklift having a support wheel 52 protruding forward through an outrigger 51 can be transported by loading the forklift itself on a truck bed or the like. In this case, the outrigger 51 can be folded. An outrigger folding structure that is rotatable with respect to the body of the forklift is provided.

The folding structure of this outrigger is shown in FIG.
As shown in (A), insertion holes 54, 54 formed in the main body 53 on the fixed side and the outrigger 51 on the movable side.
And fixing pins 55 which can be inserted into and removed from the insertion holes 54, 54. With this folded structure, the outrigger can be fixed at the horizontal and vertical positions corresponding to the unfolded state and the folded state. In addition, an auxiliary wheel 56 is provided on the base end side of the outrigger so that the forklift can be moved at the time of folding. Reference numerals 51a, 55a, and 56a denote respective folded states of the outrigger 51, the fixing pin 55, and the auxiliary wheel 56.

The procedure for folding the outrigger 51 is such that the weight of the main body 53 is supported by the lowered fork, the load on the outrigger 51 is removed, and the fixing pin 55 is inserted and removed, and the folding of the outrigger is rotated manually. Done by

[0005]

However, since the outrigger and its folding structure are subjected to a large load during loading and unloading, sufficient rigidity is required in the folding direction and the torsional direction. The fixing pin requires high-precision fitting with a small gap and a sufficient length, and when the outrigger is folded, the weight of the outrigger acts on the folding structure, so the angle adjustment of the heavy outrigger is subtle. It is necessary to remove and insert the fixing pin, which requires a great amount of alignment and a large amount of force, which is a bottleneck in the work and creates a gap in the engaging and fixing part, causing play, and ensuring sufficient rigidity. It was difficult.

SUMMARY OF THE INVENTION An object of the present invention is to provide an outrigger folding structure in which the outrigger can be folded and unfolded by light work, and has sufficient rigidity by eliminating a gap that causes play.

[0007]

In order to solve the above-mentioned problems, an outrigger is provided rotatably with respect to a main body of a forklift, and the outrigger is fixed to each position when it is unfolded and when it is folded. In a folding structure of an outrigger for a forklift having a set member forming a side and a lock member engageable with the set member, a positioning portion corresponding to both the unfolding and folding positions of the outrigger is formed on the set member. The lock member engaged with the positioning portion has a screw member for moving the lock member forward and backward, and has a U-shaped cross-section capable of capturing both the outrigger and the set member, and supports the working load of the outrigger. An engaging portion having sufficient rigidity was provided.

[0008]

The engagement portion of the lock member captures both the outrigger and the set member, and in the deployed position of the outrigger, supports the applied load by the rigidity of the engagement portion, and the lock member is set by the rotation of the screw member. Is reciprocally engageable.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view of a forklift having an outrigger folding structure according to the present invention, FIG. 2 is a perspective view showing an embodiment of the present invention, FIG. 3 is an exploded perspective view of FIG. 2, and FIG. FIG. 5 is a sectional view taken along line AA of FIG.

In FIG. 1, a forklift 1 having a folding structure of an outrigger according to the present invention has a forklift body 2 having a small size and light weight. The elevating mast 6 supporting the fork 5 stands upright. The outrigger 3 and the fork 5 are provided so as to be turned around a horizontal axis in the width direction of the vehicle body so as to be foldable for loading and transporting the forklift 1 on a truck bed or the like. 3
a and 5a show the respective folded states of the outrigger 3 and the fork 5.

In FIG. 2 or FIG.
Is provided rotatably with respect to the main body 2 of the forklift, and has a folding structure of the auxiliary wheel 3b and the outrigger on the base side thereof. This folding structure includes a set member 7 fixed to the body 2 side of the forklift, and a set member 7
And a lock member 8 which engages with and retracts from the lock member 8.

The set member 7 has two positioning portions 7a, 7 corresponding to both the unfolded and folded positions of the outrigger 3.
b. The lock member 8 has a U-shaped cross section capable of capturing both the outer surface of the outrigger 3 having a square cross section and the set member 7 and has a rib having sufficient rigidity to support the load applied to the outrigger. Part 9
And a screw member 10 for moving the engaging portion 9 forward and backward, and a lever 10a for rotating the screw member 10.

In FIG. 4, the two positioning portions 7a and 7b of the set member 7 make an angle difference of 90 degrees corresponding to both the deployed and folded positions of the outrigger 3. In addition, stoppers 2a and 2b for restricting the rotation range of the outrigger 3 are provided on the main body 2 of the forklift. The stopper 2a corresponding to the lateral position is made of an elastic material in order to buffer the outrigger 3 when it is deployed.

In FIG. 5, the main body 2 of the forklift
A fixed shaft 2c is provided in the width direction of the fixed shaft 2c, an outrigger 3 is rotatably fitted to the fixed shaft 2c, and a stopper 2d is provided at a shaft end of the fixed shaft 2c. A screw member 10 is screwed into the center of the fixed shaft 2c, and the screw member 10 rotatably fits the engaging portion 9 of the lock member 8 between the large and small flanges 10b and 10c. When the screw member 10 is rotated, the engaging portion 9 is advanced and retracted as the screw member 10 is advanced and retracted, and the engaging portion 9 can capture both the outer surface of the outrigger 3 and the positioning portions 7a and 7b of the set member 7.

The operation of the above-structured outrigger folding structure will be described below.

FIG. 6 is a sectional view of a main part showing a folding process, and FIG.
FIG. 4 is a side view showing a state where the outrigger is folded.

By lowering the folded fork 5a of FIG. 1 and supporting the vehicle body load with the fork 5a, the support wheel 4 at the tip of the outrigger 3 is lifted off the road surface, and the lever of FIG. The screw member 10 is loosened via 10a.

As shown in FIG. 6A, the outer surface of the outrigger 3 and the set member 7 are moved with the retreat operation of the screw member 10.
The engaging portion 9 of the lock member 8, which has captured both, comes off the set member 7. As a result, the outrigger 3 is rotatable, so that the outrigger 3 can be turned to a vertical position.

When the outrigger 3 is rotated to the vertical position,
As shown in FIG. 2B, the lock member 8 capturing only the outrigger 3 is rotated together with the rotation of the outrigger 3. At this time, the rotation of the lock member 8 is regulated by the stopper 2b in FIG. 7 and faces the positioning portion 7b on the vertical position side of the set member 7.

By tightening the screw member 10 via the lever 10a, the lock member 8 advances toward the set member 7 together with the axial movement of the screw member 10, and as shown in FIG. The engaging portion 9 of 8 catches the positioning portion 7b of the set member 7 together with the outer surface of the outrigger 3, and engages and fixes the outrigger 3 in the vertical position.

In this case, even if there is a slight angle difference between the engaging portion 9 and the positioning portion 7b, the locking member 8 can be advanced by a slight lever operation force through the screw member 10 because the locking member 8 moves forward. The set member 7 can be easily captured, and the outrigger 3 can be reliably fixed in the vertical position. The same applies to the fixing of the outrigger 3 in the lateral position.

When the outrigger 3 is folded, the auxiliary wheel 3b at the base end thereof is located below, and the vehicle body is lowered by raising the fork supporting the vehicle body, and as shown in FIG. It touches the ground and the vehicle can move.
In this state, loading on a truck is performed.

[0024]

As described above, the screw member for moving the lock member forward and backward, the U-shaped cross-section that can catch the set member together with the outrigger, and the rigidity sufficient to support the acting load of the outrigger are provided. By providing the locking portion with the locking member, the locking member is reciprocally engageable with the set member by the rotation of the screw member, and the locking portion captures both the outrigger and the set member, and has a rigidity. This supports the working load of the outrigger.

Therefore, since the lock member can be moved forward and backward by a light operation by rotating the screw member, the operation of switching the vertical position or the horizontal position of the outrigger can be performed efficiently, and the locking member can be engaged. The joint portion can secure sufficient rigidity without a gap that causes play, thereby improving the cargo handling capacity of the small fork.

[Brief description of the drawings]

FIG. 1 is a side view of a forklift having an outrigger folding structure according to the present invention.

FIG. 2 is a perspective view showing an embodiment of the present invention.

FIG. 3 is an exploded perspective view of FIG. 2;

FIG. 4 is a side view of the embodiment of the present invention.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a sectional view of an essential part showing a folding process of the outrigger.

FIG. 7 is a side view showing a state where the outrigger is folded.

FIG. 8 is a side view of a conventional folding structure of an outrigger and a plan view showing main parts thereof.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Forklift, 2 ... Body part, 2a, 2b ... Stopper, 2c ... Fixed shaft, 3, 3a ... Outrigger, 3b ... Auxiliary wheel, 4 ... Support wheel, 5, 5a ... Fork, 6 ... Elevating mast, 7 ... Set Members, 7a, 7b: positioning portion, 8: locking member, 9: engaging portion, 10: screw member, 10a: lever, 10b, 10c: flange.

Claims (1)

(57) [Scope of request for utility model registration] An outrigger is provided so as to be rotatable with respect to a main body of a forklift, and in order to fix the outrigger in each of a deployed position and a folded position, a set member serving as a fixed side and a set member are provided. In the folding structure of an outrigger for a forklift including a lock member that is engageable with the lock member, the set member has a positioning portion corresponding to both the unfolding position and the folding position of the outrigger. Has a screw member for moving the lock member forward and backward, and an engaging portion having a U-shaped cross section capable of capturing both the outrigger and the set member and having sufficient rigidity to support the acting load of the outrigger. Outrigger folding structure for forklifts.