A mechanism for adjusting a steering column for a fork lift truck

Abstract

The utility model discloses a kind of adjusting steering column mechanisms for fork truck, including the support being connected with instrument frame, support is connected with steering column assembly, and operating handle assembly is installed on steering column assembly, and operating handle assembly includes: handle casing, is connected with steering column assembly by pivot one;Pawl, handle casing is connected by pivot two, the pawl is engaged with ratchet installed on support.This utility model is simple in structure, and pawl rotates around the outer circumferential surface of pivot by pressing connecting rod, at this time, the end of pawl and ratchet is locked and is lifted to complete separation, and steering column assembly angle adjustment can be completed by operating handle assembly, when adjusting to proper angle, press on connecting rod is released, elastic member resets and drives connecting rod to move up, pawl rotates by pivot until pawl and ratchet are locked and are engaged, complete steering column angle adjustment movement, and the angle of steering column assembly can be accurately adjusted.

Description

Technical Field

[0001] This utility model relates to the field of forklift steering technology, specifically a forklift steering column adjustment mechanism. Background Technology

[0002] In the forklift industry, the steering column, as a key component connecting the steering wheel and the steering system, directly impacts driver comfort and operational safety with its angle adjustment performance. Currently, most mainstream steering column adjustment mechanisms in the industry adopt an integral single-stage adjustment structure, typically relying on a single bolt for locking. This structure has significant technical drawbacks in practical applications: firstly, due to the lack of multi-stage adjustment and positioning devices, drivers cannot finely and progressively adjust the steering column angle according to individual differences such as height and posture, resulting in low adjustment accuracy and difficulty in achieving an ideal operating posture; secondly, the single-bolt locking method is prone to loosening in the frequent vibrations of forklift operation, causing the steering column to wobble or shift during use, affecting handling stability and posing safety hazards. Furthermore, once the integral structure is locked, the adjustment operation is cumbersome, requiring the bolt to be completely loosened before adjustment, which is not conducive to quickly and conveniently adapting to the needs of different operators. Therefore, a steering column adjustment mechanism for forklifts is proposed. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable steering column mechanism for forklifts to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a forklift steering column adjustment mechanism, including a bracket connected to an instrument panel, the bracket being connected to a steering column assembly, and an operating handle assembly mounted on the steering column assembly, the operating handle assembly comprising: The handle housing is connected to the steering column assembly via a pivot. The pawl is connected to the handle housing via a pivot, and the pawl engages with the ratchet teeth mounted on the bracket. The connecting rod is located inside the handle housing, with one end connected to the pawl and the other end connected to the handle housing via an elastic element.

[0005] As a further embodiment of this invention, a button is provided at the end of the connecting rod away from the pawl.

[0006] As a further embodiment of this utility model: the elastic element is a spring, one end of the spring is connected to the inner wall of the handle housing, and the other end of the spring is connected to a limiting block sleeved on the outer circumference of the connecting rod, and the limiting block and the handle housing are in sliding fit.

[0007] As a further embodiment of this utility model: two limiting sleeves are fitted on the outer circumferential surface of the second rotating shaft, and the pawl is located between the two limiting sleeves, and the pawl is in contact with the two limiting sleeves.

[0008] As a further embodiment of this utility model: the bracket is provided with an arc-shaped groove, which is adapted to the rotating shaft.

[0009] As a further embodiment of this utility model: the steering column assembly and the bracket are connected in three phases via a rotating shaft.

[0010] As a further embodiment of this utility model: a steering wheel is installed at one end of the steering column assembly, and a steering shaft is installed at the other end.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This application uses pressing the connecting rod to rotate the pawl around the outer circumference of the shaft. At this time, the end of the pawl that is locked with the ratchet tooth lifts up and disengages. By turning the operating handle assembly, the angle of the steering column assembly can be adjusted. After adjusting to the appropriate angle, releasing the pressing of the connecting rod causes the elastic element to reset and move the connecting rod upward. The pawl rotates through the shaft until the pawl and ratchet tooth lock into place, completing the steering column angle adjustment movement. This allows for precise adjustment of the steering column assembly angle. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall adjustment steering column mechanism of this utility model; Figure 2 This is a schematic diagram of the operating handle assembly of this utility model; Figure 3 This is an enlarged schematic diagram of point A in this utility model; Figure 4 This is a three-dimensional schematic diagram of the adjusting steering column mechanism of this utility model. In the diagram: 1. Bracket; 2. Steering column assembly; 3. Instrument panel; 4. Control handle assembly; 41. Handle housing; 42. Rotary shaft one; 43. Pawl; 44. Rotary shaft two; 45. Linkage; 46. Elastic element; 47. Button; 48. Limit block; 49. Limit sleeve; 5. Ratchet; 6. Rotary shaft three; 7. Steering wheel; 8. Steering shaft. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-4 In this embodiment of the present invention, a forklift adjustable steering column mechanism includes a bracket 1 connected to an instrument panel 3, the bracket 1 being connected to a steering column assembly 2, and an operating handle assembly 4 mounted on the steering column assembly 2. The operating handle assembly 4 includes: The handle housing 41 is connected to the steering column assembly 2 via a pivot 42; The pawl 43 is connected to the handle housing 41 via the second pivot 44, and the pawl 43 engages with the ratchet 5 mounted on the bracket 1. Link 45 is located inside handle housing 41, with one end connected to pawl 43 and the other end connected to handle housing 41 via elastic element 46.

[0015] Specifically, a steering wheel 7 is fixedly mounted on one end of the steering column assembly 2, and a steering shaft 8 is fixedly mounted on the other end. A bracket 1 is bolted to the instrument panel bracket 3, providing stable support. The steering column assembly 2 and the bracket 1 are connected via a pivot 6, allowing the steering column assembly 2 to be adjusted around the pivot 6. A handle housing 41 is located on the side of the bracket 1 away from the steering column assembly 2. A pivot 42 is fixedly mounted on the handle housing 41, passing through the bracket 1 and fixedly connected to the steering column assembly 2. An arc-shaped groove 101 is provided on the bracket 1, which is adapted to the pivot 42. The pivot 42 passes through the arc-shaped groove 101 and through the bracket 1. The design of the arc-shaped groove 101 limits the angle of the steering column assembly 2. The angle adjustment range is as follows: the ratchet 5 is fixed to the bracket 1 by bolts and its position remains stable, while the pawl 43 is fixed to the handle housing 41 by the second pivot 44. The second pivot 44 is located in the middle area of ​​the pawl 43. The connecting rod 45 is connected to the end of the pawl 43 away from the ratchet 5. By pressing the connecting rod 45, the end of the pawl 43 is driven to rotate around the second pivot 44. When the end of the pawl 43 that is in contact with the ratchet 5 is lifted, the pawl 43 is no longer in contact with the ratchet 5, and the angle of the steering column assembly 2 can be adjusted. After the angle adjustment is completed, the connecting rod 45 is reset under the action of the elastic element 46. At this time, the pawl 43 is driven to return to its original position, so that its end engages with the corresponding external tooth on the ratchet 5 and locks, thereby completing the locking of the steering column assembly 2.

[0016] Please see Figure 2In one embodiment, preferably, the elastic element 46 is a spring. One end of the spring is connected to the inner wall of the handle housing 41, and the other end of the spring is connected to the limiting block 48 sleeved on the outer circumferential surface of the connecting rod 45. The limiting block 48 and the handle housing 41 are in sliding fit. A button 47 is provided at the end of the connecting rod 45 away from the pawl 43. The button 47 is exposed outside the handle housing 41. Furthermore, by pressing the button 47, the connecting rod 45 is pushed down. At this time, the spring is stretched under pressure, and one end of the pawl 43 is raised. At this time, the steering column assembly 2 is adjusted in angle. Then, the button 47 is released, the spring loses pressure and rebounds, and the end of the pawl 43 is re-engaged with the external teeth on the ratchet 44, thereby fixing the steering column assembly 2 after angle adjustment.

[0017] Please see Figure 2 In one embodiment, preferably, two limiting sleeves 49 are sleeved on the outer peripheral surface of the second rotating shaft 44, and the pawl 43 is located between the two limiting sleeves 49. The pawl 43 is in contact with the two limiting sleeves 49. Furthermore, the limiting sleeves 49 are fixedly connected to the second rotating shaft 44, while the pawl 43 is rotatably connected to the second rotating shaft 44. In this way, when the pawl 43 rotates around the second rotating shaft 44, it will not be constrained by the limiting sleeves 49. At the same time, the limiting sleeves 49 can also limit the two sides of the pawl 43 to prevent it from moving axially.

[0018] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0019] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A forklift steering column adjustment mechanism, characterized in that, The system includes a bracket connected to an instrument panel mount, the bracket being connected to a steering column assembly, and an operating handle assembly mounted on the steering column assembly. The operating handle assembly includes: The handle housing is connected to the steering column assembly via a pivot. The pawl is connected to the handle housing via a pivot, and the pawl engages with the ratchet teeth mounted on the bracket. The connecting rod is located inside the handle housing, with one end connected to the pawl and the other end connected to the handle housing via an elastic element.

2. The forklift adjustable steering column mechanism according to claim 1, characterized in that, A button is provided at the end of the connecting rod away from the pawl.

3. The forklift adjustable steering column mechanism according to claim 1, characterized in that, The elastic element is a spring. One end of the spring is connected to the inner wall of the handle housing, and the other end of the spring is connected to a limiting block sleeved on the outer circumference of the connecting rod. The limiting block and the handle housing are in sliding fit.

4. The forklift adjustable steering column mechanism according to claim 1, characterized in that, The outer circumferential surface of the second rotating shaft is fitted with two limiting sleeves, and the pawl is located between the two limiting sleeves, and the pawl is in contact with the two limiting sleeves.

5. The forklift adjustable steering column mechanism according to claim 1, characterized in that, The bracket has an arc-shaped groove that is compatible with the rotating shaft.

6. The forklift adjustable steering column mechanism according to claim 1, characterized in that, The steering column assembly and the bracket are connected in three phases via a rotating shaft.

7. The forklift adjustable steering column mechanism according to claim 1, characterized in that, A steering wheel is mounted on one end of the steering column assembly, and a steering shaft is mounted on the other end.

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