KR100481450B1 - Arrangement for fixing axle beam in forklift truck - Google Patents

Abstract

The present invention relates to an axle beam support structure of a forklift truck. The support structure of the present invention is the axle beam support of the forklift for supporting the axle beam 7 provided with the driving / steering wheel 5a of the rear wheel 5 and the idle wheel 5b on the frame 1a of the vehicle body 1. In the structure, the support shaft 10 is provided with a first fixing end 12 on one side and a second fixing end 14 on the other side and rotatably fitted in the shaft hole 7a of the axle beam 7. and; It is fixed to the frame (1a), so as to fix the receiving groove 22 having a recess for receiving the first fixing end 12 of the support shaft 10 and the receiving shaft 10 accommodated in the receiving groove (22) A first shaft receiving block 20 having a cap 24 assembled to a recess of the receiving groove 22; A second bearing block 30 fixed to the frame 1a so as to face the first bearing block 20 and having an assembly hole 34a aligned with the receiving groove 22 of the first bearing block 20; It has an accommodating hole 42 for accommodating the 2nd fixed end 14 of the support shaft 10, Comprising: In the assembly hole 34a of the 2nd receiving block block 30 with the 2nd fixed end 14 accommodated. Adapter 40 is screwed; An adjuster 50 detachably assembled to the adapter 40 so that the adapter 40 can be rotated to screw the axle beam 7 in the pressing direction; And locking means capable of locking the adapter 40 pressurized by the axle beam 7.

Description

Axle beam support structure of forklift truck {ARRANGEMENT FOR FIXING AXLE BEAM IN FORKLIFT TRUCK}

The present invention relates to an axle beam support structure of a forklift, and more particularly, to an axle beam support structure of a forklift that can prevent flow of an axle beam provided with driving / steering wheels and idle wheels of a rear wheel.

A forklift is a typical conveying and unloading equipment, which is used to lift and unload heavy loads or transport them to a desired position. Such forklifts are distinguished from standard forklifts configured to only lift in a fixed position, and, in contrast, a rich type forklift in which the mast assembly is configured to be movable forward and backward.

The rich type forklift is provided with a vehicle body 1 as shown in FIG. 1, and a pair of rich legs 2 extending side by side forward in the lower portion of the vehicle body 1 is installed. And the front wheel 3 of a relatively small diameter is provided in the front-end | tip of the rich leg 2, and the rear wheel 5 which has a larger diameter compared with the front wheel 3 is provided in the lower part of the vehicle body 1. As shown in FIG. As shown in FIG. 2, the rear wheels 5 are provided at one side of the driving / steering wheel 5a to enable driving and steering of the vehicle and the other side to assist the driving / steering wheel 5a. It consists of the idle wheel 5b. Here, the driving / steering wheel 5a is rotated by a drive motor (not shown), and its direction is changed by a steering cylinder (not shown), whereby steering is possible.

On the other hand, the driving / steering wheel 5a and the idling wheel 5b are installed on both sides of the axle beam 7, which axle beam 7 supports the support shaft 8 on the frame 1a of the vehicle body 1. It is installed rotatably around the center. Here, the support shaft 8 is inserted into the shaft hole 7a of the axle beam 7 through the bush 8a, as shown in FIG. 3, and passes through the pair of bearing blocks installed in the frame 1a. Both ends are supported by (9), respectively. In particular, both ends of the support shaft 8 is accommodated in the lower receiving groove 9a formed in the bearing block 9, as shown in FIG. 2, and then caps 9b covering the lower opening of the receiving groove 9a. It is configured to be fixedly installed by.

The axle beam 7 serves to support the driving / steering wheel 5a and the idling wheel 5b, and simultaneously supports the driving / steering wheel 5a so as to be movable up and down with respect to the vehicle body 1. The driving / steering wheel 5a capable of vertical movement as described above can move in accordance with the state of the road surface while driving, thereby enabling the forklift to stably run regardless of the road surface state. Here, a suspension device S is provided at one end of the axle beam 7 so as to absorb the kinetic force of the axle beam 7 which moves up and down.

However, such a conventional forklift truck has an axle beam (7) to prevent the axle beam 7 from flowing between both bearing blocks 9 along the longitudinal direction of the support shaft 8 as shown in FIG. The shim (8b) is interposed between the 7) and the bearing block (9), this shim (8b) has a lot of difficulties in installing the support shaft (8) in the bearing block (9).

That is, conventionally, a shim 8b is disposed between the axle beam 7 and the bearing block 9 to restrict the flow of the axle beam 7 between the bearing block 9, which is provided with a shim 8b. It is configured to fit on both sides of the support shaft (8). On the other hand, the distance between the shim 8b and the shim 8b of the support shaft 8, in which the shim 8b is fitted, is configured to be larger than the inner distance between the bearing blocks 9 on both sides, whereby both shims There are many difficulties in assembling the support shaft 8 to the bearing block 9 so that 8b is disposed between the bearing blocks 9.

As a result, in order to assemble the support shaft 8 into the receiving groove 9a of the bearing block 9, it is difficult to press or strike the support shaft 8 with a press or a hammer to accommodate the receiving shaft 9a. It is. In addition, the shim 8b of the axle beam 7 and the bearing block 9 wears out as time passes, and the support shaft 8 is periodically separated from the bearing block 9 to remove the shim 8b. You must exchange it. However, as described above, since the assembling work of the support shaft 8 with respect to the bearing block 9 is very difficult, there are many difficulties and inconveniences in periodically separating and combining the bearing block 9 and the support shaft 8. Suffer.

Accordingly, the present invention has been made to solve the conventional problems as described above, the object is to adjust the distance between the axle beam and the bearing block without depending on the seam to prevent the flow of the axle beam It is to provide an axle beam support structure of the configured forklift.

Another object of the present invention is to provide an axle beam support structure of a forklift, which enables to easily separate and couple the support shaft of the axle beam from the bearing block.

In order to achieve the above object, the present invention provides an axle beam support structure of a forklift for supporting an axle beam provided with driving / steering wheels and idle wheels of a rear wheel on a frame of a vehicle body, the first fixing end of one side and the second of the other side. A support shaft having a fixed end and rotatably fitted in the shaft hole of the axle beam; A first shaft receiving block fixed to the frame and having a receiving groove having a recess for accommodating the first fixed end of the supporting shaft, and a cap assembled to the opening of the receiving groove to fix the supporting shaft received in the receiving groove; ; A second bearing block fixed to the frame so as to face the first bearing block and having an assembly hole aligned with the receiving groove of the first bearing block; An adapter having an accommodating hole for accommodating the second fixed end of said support shaft, said adapter being screwed into an assembly hole of said second receiving block while accommodating said second fixed end; An adjuster detachably assembled to the adapter to rotate the adapter and to screw in the direction of pressing the axle beam; And locking means capable of locking the adapter that presses the axle beam.

Hereinafter, a preferred embodiment of the axle beam support structure of the forklift according to the present invention will be described in detail with reference to the accompanying drawings.

4 and 5 are planar cross-sectional views showing the axle beam support structure of the forklift according to the present invention, FIG. 6 is a sectional view taken along the line VI-VI of FIG. 4, and FIG. 7 is an exploded perspective view showing the main part of the present invention. First, referring to FIG. 4, the axle beam support structure of the present invention supports the axle beam 7 provided with the driving / steering wheel 5a and the idle wheel 5b to the frame 1a of the vehicle body 1. A shaft 10 and first and second bearing blocks 20, 30 provided on the frame 1a of the vehicle body 1 so as to support both ends of the support shaft 10 are provided.

The support shaft 10 is fitted into the shaft hole 7a of the axle beam 7, and has a first fixed end 12 on one side and a second fixed end 14 on the other side, as shown in FIG. 7. . As shown in FIG. 4, the first fixing end 12 is supported by the first bearing block 20, and as shown in FIG. 7, the chamfered portion 12a is prevented from rotating in the state supported by the first bearing block 20. Equipped) The second fixing end 14 is supported by the second bearing block 30 in FIG. 4 and has a screw hole 14a formed along the axial direction from the end as shown in FIG. In addition, a key groove 14b is formed around the outer surface. The screw hole 14a is coupled with a fixing bolt 56 for fixing the adjuster 50 to be described later to the support shaft 10. And the key groove 14b is configured so that the key 62 of the locking washer 60 to be described later is fitted.

As shown in FIG. 4, the support shaft 10 has both ends of the first bearing block 20 of the frame 1a in a state in which the support shaft 10 is fitted to the shaft hole 7a of the axle beam 7 via the bush 10a. ) And the second bearing block 30 serve to rotatably support the axle beam 7 to the vehicle body 1.

And the first shaft receiving block 20 for supporting the first fixed end 12 of the support shaft 10 is provided with a receiving groove 22 of the lower opening as shown in Figure 6, this receiving groove 22 ) Is configured to be closed by the cap 24. The first bearing block 20 accommodates the first fixing end 12 of the support shaft 10 in the receiving groove 22 having a lower opening, and then the lower opening of the receiving groove 22 through the cap 24. By closing the first fixing end 12 of the support shaft 10 is fixed to the vehicle body (1). Here, the chamfered portion (12a) formed in the first fixed end 12 of the support shaft 10 is configured to be interviewed in the cap 24 for closing the receiving groove (22) accommodated in the receiving groove (22) 10) limit the rotation.

In addition, the second bearing block 30 for supporting the second fixing end 14 of the support shaft 10 is fixed to the frame 1a of the vehicle body 1 as shown in FIG. 4. And a subblock 34 fixed to the main block 32. The main block 32 is fixed to the frame 1a by bolts B, and has a central through hole 32a. In particular, the central through hole 32a is configured to align with the tool passage 1b formed in the frame 1a. The subblock 34 is fixedly installed in the main block 32, and has a central assembly hole 34a having a female thread formed therein. The center assembly hole 34a is configured to align with the through hole 32a of the main block 32. Here, the sub-block 34 is fixed to the main block 32 by the bolt (B) for fastening the main block 32 and the frame (1a).

On the other hand, the axle beam support structure of the present invention has an adapter 40 screwed into the assembly hole 34a of the main block 32. The adapter 40 has a receiving hole 42 for receiving the second fixed end 14 of the support shaft 10. The adapter 40 is screwed into the assembly hole 34a of the subblock 34 in a state in which the second fixing end 14 of the support shaft 10 is accommodated, so that the second fixing end of the support shaft 10 is fixed. (14) serves to support the second bearing block (30). In addition, the adapter 40 screwed to the subblock 34 is configured to screw with respect to the subblock 34 in accordance with its rotation, such that the adapter 40 is screwed against the subblock 34. It is configured to protrude from the sub-block 34 and to be in close contact with the axle beam (7), thereby eliminating the gap between the axle beam (7) and the second bearing block (30). As a result, the adapter 40 which eliminates the gap between the axle beam 7 and the second bearing block 30 serves to prevent the flow of the axle beam 7.

4, the axle beam support structure of the present invention is equipped with an adjuster 50 for rotating the adapter 40 from the outside. The adjuster 50 has a coupling plate 52 fixed to the adapter 40 with a bolt B, and a nut 54 welded and fixed to the center of the coupling plate 52 so as to rotate the coupling plate 52. It is composed of In particular, the nut 54 is configured to rotate with a tool such as a wrench, and is operable through the tool passage 1b of the frame 1a and the through hole 32a of the main block 32. .

The adjuster 50 rotates the coupling plate 52 integrally welded by rotating the nut 54 through a tool such as a wrench, and the adapter 40 integrally coupled as the coupling plate 52 is rotated. ) So that the adapter 40 can be screwed with respect to the subblock 34 of the second bearing block 30. As a result, the distance between the axle beam 7 and the second bearing block 30 can be adjusted by moving the adapter 40 through the adjuster 50 and pushing it to the axle beam 7. This makes it possible to prevent the flow of the axle beam 7.

On the other hand, the axle beam support structure of the present invention has locking means for locking the adapter 40 pressed against the axle beam 7. This locking means is fixed to the adapter 40 with a bolt B as shown in FIG. 5, but with a locking washer 60 having a key 62 fitted into the key groove 14b of the support shaft 10. Is implemented. In particular, the locking washer 60 is the base plate 61 to be fitted into the annular base plate 61 and the key groove 14b of the support shaft 10 fixed to the adapter 40 shown in Figure 7 with the bolt (B). It consists of a key 62 which protrudes from 61.

The locking washer 60 is integrally coupled to the adapter 40 as shown in FIG. 5, while the key 62 is fitted into the key groove 14b of the support shaft 10 to be coupled to the adapter 40. ) To prevent rotation. That is, it is configured to limit the rotation of the adapter 40 by integrally connecting the support shaft 10 and the screw-movable adapter 40 is limited rotation. As a result, the adapter 40 with limited rotation is locked while pressing the axle beam 7.

On the other hand, the locking washer 60 is configured to be assembled to the adapter 40 after separating the adjuster 50 for rotating the adapter 40 from the adapter 40, the locking washer 60 The rear of the adjuster 50 separated from the adapter 40 is configured to be integrally assembled. This is to prevent the adjuster 50 from being lost by reassembling the separated adjuster 50 together with the locking washer 60 to the adapter 40. Meanwhile, the adjuster 50 further includes a fixing bolt 56 fitted into the nut 54 and fastened to the screw hole 14a of the support shaft 10. The fixing bolt 56 includes the adjuster 50. And by tightening the support shaft 10 further enhances the coupling force of the adjuster 50, the locking washer 60 and the support shaft 10.

Next, look at the assembly sequence and operation of the axle beam support structure having such a configuration, as follows. First, as shown in FIG. 4, the first bearing block 20 and the second bearing block 30 are fixed to the frame 1a of the vehicle body 1, and the subblock 34 of the second bearing block 30 is provided. Screw adapter (40). Then, while the support shaft 10 is inserted into the shaft hole 7a of the axle beam 7, the second fixing end 14 of the support shaft 10 is inserted into the receiving hole 42 of the adapter 40. Support In this state, the second fixing end 14 of the support shaft 10 is supported by the frame 1a of the vehicle body 1.

When the support of the second fixing end 14 is completed, as shown in FIG. 6, the first fixing end 12 of the support shaft 10 is fitted into the receiving groove 22 of the first bearing block 20. After arranging, the open bottom of the receiving groove 22 is closed with the cap 24. At this time, the chamfered portion 12a of the first fixing end 12 should be configured to be interviewed with the cap 24, of course. In this state, the first fixing end 12 of the support shaft 10 is fixedly supported by the first bearing block 20, and thus, both ends of the support shaft 10, that is, the first fixing end 12 and the second fixing unit 12. The stage 14 is in a state supported by the vehicle body 1.

On the other hand, when the support of both ends of the support shaft 10 is completed, the sub-block 34 through the tool passage 1b of the frame 1a and the through hole 32a of the main block 32, as shown in FIG. The adjuster 50 is fixedly assembled to the adapter 40 screwed on. When the assembly of the adjuster 50 is completed, the adapter 40 is screwed toward the axle beam 7 by rotating the adjuster 50 through a tool such as a wrench. At this time, the screw 40 is pressed close to the side of the axle beam (7), thereby eliminating the gap between the axle beam (7) and the second bearing block (30).

In this state, the axle beam 7 is prevented from flowing between the first bearing block 20 and the second bearing block 30.

On the other hand, when the clearance adjustment of the axle beam 7 and the second shaft receiving block 30 is completed, the adjuster 50 is separated from the adapter 40, the locking washer 60 in the place where the adjuster 50 is separated. Assemble At this time, it is a matter of course that the key 62 of the locking washer 60 is inserted into the key groove 14b of the support shaft 10. In this state, the adapter 40 is integrally connected with the support shaft 10 whose rotation is limited, and is locked while the rotation is prevented. Meanwhile, in the process of assembling the locking washer 60 to the adapter 40, the adjuster 50 is integrally assembled to the rear surface of the locking washer 60, and the nut 54 of the assembled adjuster 50 is completed. The fixing bolt 56 is fastened to the screw hole 14a of the support shaft 10.

According to the present invention, the first and second fixed ends 14 of the support shafts 10 fitted to the axle beams 7 are supported by the first and second bearing blocks 20 and 30, and then the adapter ( By removing the gap between the axle beam 7 and the second bearing block 30 as 40, it provides an effect that can prevent the flow of the axle beam 7 between both bearing blocks 20, 30.

Although the preferred embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to these specific embodiments, and may be appropriately changed within the scope of the claims.

As described above, the axle beam support structure of the forklift according to the present invention supports the first and the second fixed end of the support shaft fitted to the axle beam to the first and second bearing blocks, and then the axle beam and the second bearing as adapters. The clearance between the blocks has the advantage of effectively preventing axle beam flow between both bearing blocks.

1 is a side view showing a typical rich type forklift,

2 is a cross-sectional view taken along the line II-II of FIG. 1;

3 is a cross-sectional view taken along line III-III of FIG. 2;

4 and 5 are planar cross-sectional views showing the axle beam support structure of the forklift according to the present invention;

6 is a cross-sectional view taken along line VI-VI of FIG. 4;

7 is an exploded perspective view showing the main part of the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

1: body 1a: frame

5: rear wheel 5a: drive / steer wheel

5b: idle wheel 7: axle beam

10: support shaft 12: first fixing end

12a: Chamfer 14: Second fixing stage

14b: keyway 20: first bearing block

22: receiving groove 24: cap

30: 2nd receiving block 32: Main block

34: subblock 34a: assembly hole

40: adapter 42: receiving hole

50: adjuster 60: locking washer

62: key

Claims (3)

In the axle beam support structure of the forklift for supporting the axle beam 7 provided with the driving / steering wheel 5a of the rear wheel 5 and the idle wheel 5b on the frame 1a of the vehicle body 1, A support shaft (10) having a first fixing end (12) on one side and a second fixing end (14) on the other side, and being rotatably fitted in the shaft hole (7a) of the axle beam (7); The receiving groove 22 is fixed to the frame (1a), having a recess for accommodating the first fixed end 12 of the support shaft 10 and the support shaft 10 accommodated in the receiving groove 22 A first shaft receiving block (20) having a cap (24) assembled to the trimming portion of the receiving groove (22) to fix it; The second bearing block 30 having an assembly hole 34a fixed to the frame 1a to face the first bearing block 20 and aligned with the receiving groove 22 of the first bearing block 20. )and; A mounting hole 42 for accommodating the second fixed end 14 of the support shaft 10, and an assembly hole of the second bearing block 30 with the second fixed end 14 housed therein ( An adapter 40 screwed to 34a); An adjuster (50) detachably assembled to the adapter (40) so as to rotate the adapter (40) to screw in the direction of pressing the axle beam (7); And a locking means for locking the adapter (40) pressurizing the axle beam (7). 2. The locking device according to claim 1, wherein the locking means includes: a key groove (14b) formed in the second fixing end (14) of the support shaft (10); The adjuster 50 is fixedly assembled to the separated adapter 40, characterized in that the locking washer 60 having a key 62 coupled with the key groove 14b of the support shaft 10. Axle beam support structure of forklift. The axle beam support structure of a forklift according to claim 1 or 2, wherein the adjuster (50) separated from the adapter (40) is fixedly assembled to the locking washer (60).