Torque adjusting mechanism for forklift steering rod

Abstract

The utility model discloses a torque adjusting mechanism for a forklift steering rod, which comprises a fixed seat, a torque adjusting mechanism and a torque adjusting mechanism, the fixed seat is provided with a mounting hole along a first direction, and the steering rod is rotatably arranged in the mounting hole in a penetrating manner; an adjusting hole is formed in the fixing seat in the second direction, and the adjusting hole is communicated with the mounting hole; an adjusting screw rod and an abutting piece are arranged in the adjusting hole, the adjusting screw rod is in threaded connection with the fixing base, and the abutting piece can abut against the side wall of the steering rod; a pre-tightening spring is further arranged between the abutting piece and the adjusting screw rod, and the deformation quantity of the pre-tightening spring is adjusted by rotating the adjusting screw rod. According to the utility model, the adjusting screw rod can be driven to axially move along the adjusting hole by rotating the adjusting screw rod, so that the compression amount of the pre-tightening spring is changed, the pre-tightening force of the pre-tightening spring on the abutting piece is adjusted, the acting force of the abutting piece on the steering rod is also adjusted, and the adjustment of the steering torque of the steering rod is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of forklifts, in particular to a torque regulating mechanism for a forklift steering rod. Background Art

[0002] The forklift uses a steering handle to drive the steering rod to rotate, which in turn drives the steering wheel to rotate, thereby realizing the steering of the forklift.

[0003] However, due to factors of its assembly process and manufacturing process, it is difficult to ensure that the existing steering rod is installed in the center, which causes the steering rod to have different steering torques at different angles, and the steering torque cannot be adjusted. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to propose a torque adjustment mechanism for a forklift steering rod, so as to solve the problem that the steering torque of the forklift steering rod cannot be adjusted in the prior art.

[0005] The technical solution adopted by the utility model to solve the technical problem is a torque adjustment mechanism for a forklift steering rod, comprising:

[0006] A fixing seat, wherein the fixing seat is provided with a mounting hole along a first direction, and the steering rod is rotatably inserted into the mounting hole; the fixing seat is provided with an adjustment hole along a second direction, and the adjustment hole is communicated with the mounting hole; wherein the first direction is perpendicular to the second direction;

[0007] An adjusting screw and an abutment are arranged in the adjusting hole. The adjusting screw is threadedly connected to the fixing seat, and the abutment can abut against the side wall of the steering rod. A preload spring is also arranged between the abutment and the adjusting screw. The adjusting screw is rotated to adjust the deformation of the preload spring.

[0008] Furthermore, a blind hole is opened inwardly at one end of the adjusting screw, the preload spring is arranged in the blind hole, and one end of the preload spring abuts against the bottom surface of the blind hole, and the other end abuts against the abutting piece.

[0009] Further, the abutment member is slidably disposed in the blind hole, and the abutment member at least partially extends out of the blind hole and abuts against a side wall of the steering rod.

[0010] Furthermore, the abutment member is spherical, the cross section of the blind hole is circular, and a spherical pair is formed between the inner wall of the blind hole and the abutment member.

[0011] Furthermore, an inner wall of the adjusting hole is provided with an internal thread, and an external thread is provided on the adjusting screw, and the internal thread is meshed with the external thread.

[0012] Furthermore, a nut is fixedly connected to the outer side of the fixing seat, the adjusting screw is threadedly connected to the nut, and the adjusting screw is rotatably arranged in the adjusting hole.

[0013] Furthermore, an adjustment hole is respectively provided on both sides of the fixing seat, and an adjustment screw, a preload spring and an abutment member are provided in each of the adjustment holes.

[0014] Further, the two abutment members are symmetrical about the central axis of the steering rod, and the two adjusting screws are symmetrical about the central axis of the steering rod.

[0015] Compared with the prior art, the utility model has at least the following beneficial effects:

[0016] (1) Since the adjusting screw is threadedly connected to the fixing seat, the adjusting screw can be driven to move axially along the adjusting hole by rotating the adjusting screw, thereby changing the compression amount of the preload spring, adjusting the preload force of the preload spring on the abutment, and thus adjusting the force of the abutment on the steering rod, thereby achieving the adjustment of the steering torque of the steering rod.

[0017] (2) An adjustment hole is provided on each side of the fixing seat, and the two abutments are symmetrical about the central axis of the steering rod, so that the two abutments act on the steering rod symmetrically, thereby preventing the steering rod from tilting due to asymmetric force points. At the same time, the two adjustment screws are symmetrical about the central axis of the steering rod, so that the telescopic lengths of the two adjustment screws are consistent, and the corresponding compression amounts of the two preload springs are consistent, so that the forces acting on the steering rod by the two abutments are consistent, thereby enabling the steering rod to be centrally assembled, so that the steering torque is consistent when the steering rod is rotated to any angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the steering rod and the torque adjustment mechanism in the embodiment;

[0019] Figure 2 is a cross-sectional view of a steering rod and a fixing seat in an embodiment;

[0020] Figure 3 It is a structural schematic diagram of a fixing seat in an embodiment;

[0021] In the figure:

[0022] 100. Steering rod;

[0023] 200, fixing seat; 210, mounting hole; 220, adjustment hole;

[0024] 300, adjusting screw; 310, preload spring; 320, nut;

[0025] 400. Abutment member. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] Please refer to Figure 1-Figure 3 The utility model discloses a torque adjustment mechanism for a forklift steering rod, comprising:

[0028] A fixing seat 200, wherein the fixing seat 200 is provided with a mounting hole 210 along a first direction, and the steering rod 100 is rotatably inserted into the mounting hole 210; the fixing seat 200 is provided with an adjustment hole 220 along a second direction, and the adjustment hole 220 is communicated with the mounting hole 210; wherein the first direction is perpendicular to the second direction;

[0029] An adjusting screw 300 and abutment 400 are arranged in the adjusting hole 220. The adjusting screw 300 is threadedly connected to the fixing seat 200, and the abutment 400 can abut against the side wall of the steering rod 100. A preload spring 310 is also arranged between the abutment 400 and the adjusting screw 300. The adjusting screw 300 is rotated to adjust the deformation of the preload spring 310.

[0030] Specifically, a mounting hole 210 is provided in the vertical direction of the fixing seat 200, and the steering rod 100 is rotatably arranged in the mounting hole 210. Meanwhile, an adjustment hole 220 communicating with the mounting hole 210 is provided in the lateral direction of the fixing seat 200. An adjustment screw 300, a preload spring 310 and an abutment member 400 are arranged in the adjustment hole 220, so that one end of the preload spring 310 abuts against the adjustment screw 300, and the other end abuts against the abutment member 400, and the abutment member 400 abuts against the side wall of the steering rod 100. The preload spring 310 is compressed by the adjusting screw 300, so that the abutment member 400 always abuts against the steering rod 100, so as to provide a rotational torque of the steering rod 100.

[0031] What is important is that since the adjusting screw 300 is threadedly connected to the fixing seat 200, by rotating the adjusting screw 300, the adjusting screw 300 can be driven to move axially along the adjusting hole 220, thereby changing the compression amount of the preload spring 310, adjusting the preload force of the preload spring 310 on the abutment 400, and thus adjusting the force of the abutment 400 on the steering rod 100, thereby realizing the adjustment of the steering torque of the steering rod 100.

[0032] Furthermore, a blind hole is opened inwardly at one end of the adjusting screw 300 , and the preload spring 310 is arranged in the blind hole, and one end of the preload spring 310 abuts against the bottom surface of the blind hole, and the other end abuts against the abutting member 400 .

[0033] A blind hole is provided to accommodate the preload spring 310, so as to constrain the deformation direction of the preload spring 310 and prevent the preload spring 310 from bending laterally. Meanwhile, the preload spring 310 is accommodated in the blind hole, which can save the space occupied by the preload spring 310 and make the structure more compact.

[0034] Furthermore, the abutment member 400 is slidably disposed in the blind hole, and the abutment member 400 at least partially extends out of the blind hole and abuts against the side wall of the steering rod 100 .

[0035] Specifically, when the adjusting screw 300 is rotated, the adjusting screw 300 can move laterally relative to the fixing seat 200, and the abutment member 400 is arranged in the blind hole and partially extends out of the blind hole, so that the abutment member 400 always maintains abutment with the steering rod 100 during the lateral movement of the adjusting screw 300.

[0036] Furthermore, the abutment member 400 is spherical, the cross section of the blind hole is circular, and a spherical pair is formed between the inner wall of the blind hole and the abutment member 400 .

[0037] Specifically, the abutment 400 can rotate in any radial direction in the blind hole, so that the abutment 400 can rotate along with the steering rod 100. The friction between the abutment 400 and the side wall of the steering rod 100 is rolling friction, which reduces the wear of the abutment 400 and the steering rod 100.

[0038] Furthermore, an inner wall of the adjusting hole 220 is provided with an internal thread, and an external thread is provided on the adjusting screw 300 , and the internal thread is meshed with the external thread.

[0039] Furthermore, a nut 320 is fixedly connected to the outer side of the fixing seat 200 , the adjusting screw 300 is threadedly connected to the nut 320 , and the adjusting screw 300 is rotatably inserted into the adjusting hole 220 .

[0040] Specifically, the adjusting screw 300 is threadedly connected to the fixing seat 200 by providing an internal thread on the inner wall of the adjusting hole 220 and providing an external thread on the adjusting screw 300. A nut 320 may also be fixed to the outside of the fixing seat 200 so that the adjusting screw 300 and the nut 320 are threadedly connected, and the adjusting screw 300 and the fixing seat 200 can be threadedly connected.

[0041] Furthermore, an adjustment hole 220 is respectively provided on both sides of the fixing seat 200 , and an adjustment screw 300 , a preload spring 310 and an abutment member 400 are provided in each of the adjustment holes 220 .

[0042] Further, the two abutting members 400 are symmetrical about the central axis of the steering rod 100 , and the two adjusting screws 300 are symmetrical about the central axis of the steering rod 100 .

[0043] Specifically, an adjustment hole 220 is provided on both sides of the fixing seat 200, and the two abutting members 400 are symmetrical about the central axis of the steering rod 100, so that the two abutting members 400 act on the steering rod 100 symmetrically, thereby preventing the steering rod 100 from tilting due to asymmetric force points. At the same time, the two adjusting screws 300 are symmetrical about the central axis of the steering rod 100, so that the telescopic lengths of the two adjusting screws 300 are consistent, and the corresponding compression amounts of the two preload springs 310 are consistent, so that the forces of the two abutting members 400 on the steering rod 100 are consistent, thereby enabling the steering rod 100 to be centrally assembled, so that the steering torque is consistent when the steering rod 100 is rotated to any angle.

[0044] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A torque adjustment mechanism for a forklift steering rod, characterized in that: include: A fixing seat, wherein the fixing seat is provided with a mounting hole along a first direction, and the steering rod is rotatably inserted into the mounting hole; the fixing seat is provided with an adjustment hole along a second direction, and the adjustment hole is communicated with the mounting hole; wherein the first direction is perpendicular to the second direction; An adjusting screw and an abutment are arranged in the adjusting hole. The adjusting screw is threadedly connected to the fixing seat, and the abutment can abut against the side wall of the steering rod. A preload spring is also arranged between the abutment and the adjusting screw. The adjusting screw is rotated to adjust the deformation of the preload spring.

2. A torque adjustment mechanism for a forklift steering rod according to claim 1, characterized in that: A blind hole is formed inwardly at one end of the adjusting screw rod, and the preload spring is arranged in the blind hole. One end of the preload spring abuts against the bottom surface of the blind hole, and the other end abuts against the abutting member.

3. A torque adjustment mechanism for a forklift steering rod according to claim 2, characterized in that: The abutment member is slidably disposed in the blind hole, and at least a portion of the abutment member extends out of the blind hole and abuts against a side wall of the steering rod.

4. The torque adjustment mechanism for a forklift steering rod according to claim 3, characterized in that: The abutment piece is spherical, the cross section of the blind hole is circular, and a spherical pair is formed between the inner wall of the blind hole and the abutment piece.

5. The torque adjustment mechanism for a forklift steering rod according to claim 1, characterized in that: The inner wall of the adjusting hole is provided with an internal thread, and the adjusting screw rod is provided with an external thread, and the internal thread is meshed with the external thread.

6. The torque adjustment mechanism for a forklift steering rod according to claim 1, characterized in that: A nut is fixedly connected to the outer side of the fixing seat, the adjusting screw is threadedly connected to the nut, and the adjusting screw is rotatably arranged in the adjusting hole.

7. The torque adjustment mechanism for a forklift steering rod according to claim 1, characterized in that: An adjusting hole is respectively provided on both sides of the fixing seat, and an adjusting screw, a preload spring and an abutment member are arranged in each adjusting hole.

8. The torque adjustment mechanism for a forklift steering rod according to claim 7, characterized in that: The two abutment members are symmetrical about the central axis of the steering rod, and the two adjustment screws are symmetrical about the central axis of the steering rod.

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