Damping steering column

Abstract

The utility model relates to the technical field of engineering trucks, and discloses a damping steering column which comprises a steering column body, a steering wheel locking mechanism support is fixed to the outer side surface of the steering column body, a steering wheel adjusting mechanism is fixed to the bottom of the steering column body, and a vibration absorber and a fixing support are arranged on the surface of the steering column body. A fixing support is arranged outside the vibration absorber. The proper working frequency of the vibration absorber is obtained by adjusting the weight m of the mass block and the rigidity k of the rubber, the mounting and fixing support of the vibration absorber is designed, the proper position of the steering column is selected, mounting and dismounting are convenient through the fixing support, the vibration absorber is not prone to falling off in the using process, the product quality is improved, and the production cost is reduced. The damping effect on the steering wheel can be better achieved, and the driving comfort is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering vehicles, in particular to a shock-absorbing steering column. Background Art

[0002] With the development of the economy and the improvement of the living standards of human beings, during the use of construction machinery vehicles, drivers have higher requirements for operation comfort, etc., and even compare the comfort of driving with that of cars.

[0003] Engineering vehicles include forklifts. Especially during the driving process of internal combustion engine forklifts, the vibration generated by the engine will be transmitted to the steering wheel to generate synchronous vibration. When the engine vibration reaches a certain frequency (natural frequency), the steering wheel will generate resonance. During resonance, the jitter of the steering wheel reaches the highest value, and at the same time, abnormal noise or noise is generated, which affects the driver's driving and reduces the operation comfort.

[0004] Since the steering wheel generally has an adjustable function, it increases the difficulty of controlling the design and assembly clearance, and to a certain extent increases the possibility of steering wheel vibration. After adding a dynamic vibration absorber to the steering wheel, the vibration of the steering wheel dynamic vibration absorber will cancel out the vibration of the steering wheel, avoiding the resonance of the steering wheel and reducing abnormal noise or noise. When designing the traditional steering wheel adjustment mechanism, rubber pads are considered for shock absorption, which plays an appropriate buffering and noise reduction role for the steering wheel, but still cannot better meet the needs of consumers. Summary of the Utility Model

[0005] The utility model aims to solve at least one of the technical problems in the related art to some extent. For this reason, an object of the utility model is to provide a shock-absorbing steering column. Through the vibration absorber, it is conveniently installed and plays a good role in buffering and vibration reduction.

[0006] The shock-absorbing steering column according to the utility model includes a steering column. A steering wheel locking mechanism bracket is fixed on the outer surface of the steering column. A steering wheel adjustment mechanism is fixed at the bottom of the steering column. A vibration absorber and a fixing bracket are fixed on the surface of the steering column. Several rubber cushion blocks are fixed inside the vibration absorber through stud bolts. An adjusting mass block is fixed on the lower surface of the rubber cushion block. The fixing bracket includes a first arc, an upper bracket, a lower bracket, fixing stud bolts and fixing nuts. The first arc is fixed on the outer surface of the vibration absorber. Several fixing stud bolts threaded with the vibration absorber penetrate through the inside of the vibration absorber. The upper bracket and the lower bracket are respectively sleeved on the upper ends and the lower ends of the several fixing stud bolts. Several fixing nuts threaded with the fixing stud bolts are sleeved on the surfaces of the several fixing stud bolts. Third arcs abutted against the steering column are provided on the outer surfaces of both the upper bracket and the lower bracket. The radius of the third arc is the same as the outer circle radius of the steering column.

[0007] Preferably, the upper and lower ends of the steering column are respectively fixed with an upper steering column end and a lower steering column end.

[0008] Preferably, mounting holes are respectively formed at both ends of the upper bracket and the lower bracket, and the opening dimensions of the mounting holes are the same as those of the fixing studs.

[0009] Preferably, a U-shaped notch is formed at the bottom of the lower bracket, and the U-shaped notch is clamped on the locking mechanism bracket.

[0010] The beneficial effects of the present utility model are as follows: By adjusting the mass m of the mass block and the rubber stiffness k, a suitable working frequency of the shock absorber is obtained, and the installation and fixing brackets of the shock absorber are designed. The appropriate position of the steering column is selected, and the installation and disassembly are facilitated through the fixing brackets, and it is not easy to fall off during use, improving the product quality, being able to better play a role in damping the steering wheel, and greatly improving the driving comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 FIG. is a three-dimensional structural schematic diagram of the shock-absorbing steering column proposed by the present utility model.

[0012] Figure 2 FIG. is a three-dimensional internal structural schematic diagram of the shock absorber of the shock-absorbing steering column proposed by the present utility model.

[0013] Figure 3 FIG. is a three-dimensional structural schematic diagram of the fixing bracket of the shock-absorbing steering column proposed by the present utility model.

[0014] Figure 4 FIG. is a three-dimensional structural schematic diagram of the limiting component of the shock-absorbing steering column proposed by the present utility model.

[0015] In the figure: 1. Steering column; 2. Shock absorber; 11. Upper end of the steering column; 12. Lower end of the steering column; 13. Steering wheel locking mechanism bracket; 14. Steering wheel adjustment mechanism; 201. First arc; 21. Adjusting mass block; 22. Rubber cushion block; 23. Fixing stud; 24. Fixing nut; 25. Upper bracket; 26. Lower bracket; 261. Second arc; 262. U-shaped notch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Refer to Figures 1-4, A shock-absorbing steering column, comprising a steering column 1, an upper end 11 of the steering column, a steering wheel locking mechanism bracket 13, a steering wheel adjustment mechanism 14, a shock absorber 2 and a fixing bracket. The shock absorber 2 is in the shape of a cuboid. Inside the shock absorber 2, there is an adjustable mass 21 and a rubber cushion block 22. By adjusting the weight m of the mass and the stiffness K of the rubber cushion block 22, and the adjustable mass 21 is suspended, which plays a role in shock absorption. The outside of the shock absorber 2 is fixed on the steering column 1 through the fixing bracket. On one side of the shock absorber 2, a first arc 201 abutting against the steering column is provided. Through the fixing bracket of the shock absorber 2, the up-and-down movement and rotation of the shock absorber 2 are reduced. The upper end 11 of the steering column is installed with a steering wheel, and the lower end 12 of the steering column is installed with a steering gear. The steering wheel adjustment mechanism 14 is installed with a rotating shaft through a bushing, and the steering wheel locking mechanism 13 is fastened through a locking handle;

[0017] Referring to Figure 2 , As a preferred embodiment of the present invention: The mass m of the adjustable mass 21 and the stiffness k of the rubber cushion block 22 are calculated according to the working frequency of the vehicle model to be matched. According to the working frequency calculation formula of the shock absorber By adjusting the weight m of the mass and the stiffness k of the rubber, a suitable working frequency of the shock absorber is obtained. When the external excitation frequency is close to the working frequency of the shock absorber, the vibration energy can be absorbed by the shock absorber with a similar frequency, thereby suppressing the vibration of the structure. The adjustable mass 21 is fixed to the bracket of the outer shell of the shock absorber 2 through the rubber cushion block 22 with studs, so that the adjustable mass 21 is suspended, playing a role in shock absorption.

[0018] Referring to Figure 3 , As a preferred embodiment of the present invention, the fixing bracket includes an upper bracket 25 and a lower bracket 26. The mounting holes of the upper bracket 25 and the lower bracket 26 are kept consistent with the stud spacing dimension. There are fixing studs 23 and fixing nuts 24. The upper bracket 25 and the lower bracket 26 are fixed on one side of 2 through the fixing studs 23 and the fixing nuts 24;

[0019] Referring to Figure 4 , As a preferred embodiment of the present invention, both the upper bracket 25 and the lower bracket 26 have a second arc 261. The radii of the second arcs 261 are the same as the outer circle radius of the steering column 1, and the center height of the second arc 261 is less than this radius, ensuring that the shock absorber cannot move after the fixing nut 24 is tightened. The lower bracket 26 is provided with a U-shaped notch 262, and the U-shaped notch 262 is stuck on the locking mechanism bracket 13 to prevent the shock absorber from rotating after the fixing nut 24 becomes loose.

[0020] When this device is in use, first place the shock absorber 2 at a suitable position on the surface of the steering column 1, so as to be able to minimize the vibration of the steering column 1 to the greatest extent. Then, press the first arc 201 on one side of the shock absorber 2 against the surface of the steering column 1. Next, insert the upper bracket 25 and the lower bracket 26 into the fixing stud 23 through the mounting holes provided on both sides of the upper bracket 25 and the lower bracket 26. At this time, install the fixing nut 24 onto the fixing stud 23, and by rotating the fixing nut 24, drive the upper bracket 25 and the lower bracket 26 to squeeze and fix the steering column 1, making it not easy to fall off during use, improving the product quality, being able to better reduce the vibration of the steering wheel, and greatly enhancing the driving comfort.

Claims

1. A shock-absorbing steering column, characterized in that: The invention comprises a steering column (1), a steering wheel locking mechanism bracket (13) is fixed to the outer surface of the steering column (1), a steering wheel adjustment mechanism (14) is fixed to the bottom of the steering column (1), a vibration absorber (2) and a fixing bracket are fixed to the surface of the steering column (1), a plurality of rubber pads (22) are fixed inside the vibration absorber (2) through studs, an adjustment mass block (21) is fixed to the lower surface of the rubber pad (22), the fixing bracket comprises a first arc (201), an upper bracket (25), a lower bracket (26), a fixing stud (23) and a fixing nut (24), the vibration absorber (2) The first circular arc (201) is fixed on the outer surface, and the interior of the vibration absorber (2) is penetrated by a plurality of fixing studs (23) threadedly connected thereto, and the upper ends and lower ends of the plurality of fixing studs (23) are respectively sleeved with the upper bracket (25) and the lower bracket (26), and the surfaces of the plurality of fixing studs (23) are sleeved with a plurality of fixing nuts (24) threadedly connected thereto, and the outer surfaces of the upper bracket (25) and the lower bracket (26) are both provided with a second circular arc (261) abutting against the steering column (1), and the radius of the second circular arc (261) is the same as the outer radius of the steering column (1).

2. The shock-absorbing steering column according to claim 1, characterized in that: The upper and lower ends of the steering column (1) are respectively fixed with a steering column upper end (11) and a steering column lower end (12).

3. The shock-absorbing steering column according to claim 2, characterized in that: Both ends of the upper bracket (25) and the lower bracket (26) are respectively provided with mounting holes, and the mounting holes have the same opening size as the fixing studs (23).

4. The shock-absorbing steering column according to claim 1, characterized in that: A U-shaped notch (262) is provided at the bottom of the lower bracket (26), and the U-shaped notch (262) is clamped on the locking mechanism bracket (13).

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