CN210063094U - Steering wheel device with height of steering column capable of being adjusted steplessly for tractor - Google Patents

Abstract

A steering wheel device for a tractor in which the height of a steering column is steplessly adjustable, comprising: the steering wheel, the sleeve and steering shaft assembly, the adjusting hand wheel, the base, the bearing and the full hydraulic steering gear; the steering wheel is sleeved on the sleeve and a steering shaft in the steering shaft assembly and is fixed by a nut; the base penetrates through the bottom ends of the sleeve and the steering shaft assembly, the bearing is sleeved on the spline shaft from the bottom of the base and is fixed by the clamp spring, the full-hydraulic steering gear is connected with the base through the bolt and the gasket, the shaft head of the spline shaft in the sleeve and the steering shaft assembly is matched with the shaft hole of the full-hydraulic steering gear, a proper gap is reserved, and a section of the adjusting hand wheel with threads is screwed into the threaded hole of the base. The device has compact structure and convenient assembly, and can rapidly realize stepless adjustment of the height direction of the steering wheel. The tractor can meet the requirements of drivers of different statures on operating comfort, is safe and reliable to use, and improves the man-machine engineering performance of the whole tractor.

Description

Steering wheel device with height of steering column capable of being adjusted steplessly for tractor

Technical Field

The utility model belongs to the tractor field relates to a steering wheel device, especially relates to a but steering wheel device of tractor stepless adjustment with steering column height.

Background

At present, the steering wheel of a domestic developed and produced small and medium-sized tractor is basically fixed, and the adjustment of height and angle cannot be realized. On large and heavy tractors, in order to improve the driving comfort and the technical level of the whole tractor, the adjustment of a steering wheel is basically similar to that of an automobile, a certain range of up-down adjustment (height) and front-back adjustment (angle) are realized by adopting a hinge device, and the adjustment is usually step-adjustable, so that the requirements of drivers of different statures on the distance between the steering wheel and the driver are met, and the driver can adjust the distance between a seat and the steering wheel and keep a comfortable operation posture.

The utility model patent "steering mechanism with adjustable large angle for tractor" that national intellectual property office authorizes in 2010 6 months 16 days, patent number is 200920224284.7, and the patent application date is 2009 10 months 21 days, and the announcement number is: 201506381U, in close proximity to the present patent application. Height adjustment knob has been arranged to the top of steering wheel in this patent, and the combination switch that the below was arranged passes through the bolt fastening on the steering column, steering column and leg joint, and the air spring is arranged in the lower part of steering column, and angle adjustment handle arranges the lower extreme at the air spring, and universal joint one end and steering column are connected, and the other end passes through the elastic disk and is connected with the transmission shaft upper end, and the lower extreme and the steering gear of transmission shaft are connected. The steering mechanism has an angle adjusting function, and the front and back adjustment angles of the steering wheel can be adjusted by 50 degrees. The steering mechanism has a complex structure and high cost, requires a large space for installation and adjustment, and is suitable for large and heavy tractors.

According to the requirements of factors such as use environment, stature of a driver and the like, a small and medium-sized tractor also needs a steering wheel with adjustable height and angle urgently, and particularly has extremely strict requirements on the height when being used in environments such as greenhouses, orchards and the like. However, the adjustable steering wheel of large and heavy tractors has complex structure and high cost, so that the small and medium tractors used in the environment cannot be applied in batch. In order to make up for the deficiency, a novel steering wheel device with an adjustable steering column for a tractor is needed to be invented, so that the use requirements of the tractor in the environments such as greenhouses, orchards and the like are better met, and the operation comfort is further improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a but steering wheel device of stepless adjustment is highly used to tractor that compact structure, manipulation are nimble, the cost is lower, be convenient for assembly and adjustment.

The utility model discloses a following technical scheme reaches above-mentioned purpose: a steering wheel device for a tractor in which the height of a steering column is steplessly adjustable, comprising: the steering wheel, the sleeve and steering shaft assembly, the adjusting hand wheel, the base, the bearing and the full hydraulic steering gear; the steering wheel is sleeved on the sleeve and a steering shaft in the steering shaft assembly and is fixed by a nut; the base penetrates through the bottom ends of the sleeve and the steering shaft assembly, the bearing is sleeved on the spline shaft from the bottom of the base and is fixed by the clamp spring, the full-hydraulic steering gear is connected with the base through the bolt and the gasket, the shaft head of the spline shaft in the sleeve and the steering shaft assembly is matched with the shaft hole of the full-hydraulic steering gear, a proper gap is reserved, and a section of the adjusting hand wheel with threads is screwed into the threaded hole of the base.

The sleeve and steering shaft assembly includes: the steering shaft, the pin, the inner sleeve, the outer sleeve pressing piece and the spline shaft; aligning a round hole on the steering shaft with a round hole on the inner sleeve, and inserting a pin into the aligned holes for positioning; the outer spline of the spline shaft is inserted into the inner spline groove of the inner sleeve, the outer sleeve pressing piece is sleeved outside the inner sleeve, the two ends of the outer sleeve pressing piece are sequentially provided with the blocking piece and the clamp spring, and the clamp spring is fixed at the end part of the outer sleeve pressing piece.

The utility model adopts the above technical scheme can reach following positive effect after: the tractor is with steering wheel device that the steering column height can infinitely variable control, and used spare part processing manufacturing is simple, and it is convenient to assemble, and can realize the stepless adjustment of steering wheel direction of height fast. The utility model discloses this utility model novel structure is compact, can satisfy different stature drivers' manipulation travelling comfort requirement, and easily installation and use have promoted the ergonomic performance of tractor complete machine by a wide margin.

Drawings

Fig. 1 is a schematic view of an installation structure of a steering wheel device for a tractor, wherein the height of a steering column of the tractor can be adjusted in a stepless manner.

Fig. 2 is a schematic cross-sectional structure view of a steering wheel device for a tractor, in which the height of a steering column can be adjusted steplessly.

Fig. 3 is a schematic cross-sectional structure view of the sleeve and the steering shaft assembly of the steering wheel device of the present invention, wherein the height of the steering column of the tractor can be adjusted steplessly.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples. As shown in the attached figures 1-2: a steering wheel device for a tractor in which the height of a steering column is steplessly adjustable, comprising: the steering wheel comprises a steering wheel 1, a sleeve and steering shaft assembly 2, an adjusting hand wheel 3, a base 4, a bearing 5 and a full hydraulic steering gear 6. The steering wheel 1 is sleeved on a steering shaft 2.1 in a sleeve and steering shaft assembly 2 and fixed by nuts, a base 4 penetrates through the bottom end of the sleeve and steering shaft assembly 2, a bearing 5 is sleeved on a spline shaft 2.5 from the bottom of the base 4 and fixed by a clamp spring, the spline shaft 2.5 can rotate but cannot move axially, a full-hydraulic steering gear 6 is connected with the base 4 by bolts and washers, a shaft head of the spline shaft 2.5 in the sleeve and steering shaft assembly 2 is matched with a shaft hole of the full-hydraulic steering gear 6, a proper gap is reserved, and one end with threads of an adjusting hand wheel 3 is screwed into a threaded hole of the base 4, so that the steering column height stepless adjustable steering wheel device is formed.

The sleeve and steering shaft assembly 2 includes: steering shaft 2.1, pin 2.2, interior sleeve 2.3, overcoat pipe clamp 2.4, integral key shaft 2.5. Round hole on the steering spindle 2.1 aligns with the round hole on interior sleeve pipe 2.3, inserts round pin 2.2 and fixes a position in the downthehole of aligning, and the external spline of integral key shaft 2.5 cooperates with the internal spline of interior sleeve pipe 2.3, and with outer sleeve pipe clamp splice 2.4 suit outside interior sleeve pipe 2.3, separation blade, jump ring are all adorned in proper order at outer sleeve pipe clamp splice 2.4 both ends, and the jump ring is fixed at outer sleeve pipe clamp splice 2.4 tip. The spline shaft 2.5 can rotate, and the inner sleeve 2.3 can slide up and down along the spline and can rotate to transmit force.

The structure can change the position of the steering wheel by adjusting the relative height of the steering column, thereby improving the operation comfort of the driver. When the height of the steering upright post of the tractor needs to be adjusted, the pressing force of the base 4 to the sleeve and the steering shaft assembly 2 is changed by rotating the adjusting hand wheel 3. When the compaction force is reduced, the sleeve and the steering shaft assembly 2 can move up and down along the base hole, and the clamp spring plays a positioning role, so that the sleeve and the steering shaft assembly 2 cannot slide out of the base 4. When a driver moves the steering wheel 1 up and down and adjusts the required height of the steering wheel, the adjusting hand wheel 3 is rotated, the base 4 compresses the outer sleeve assembly 2.4 on the sleeve and steering shaft assembly 2, the outer sleeve assembly 2.4 is in a fixed position and cannot move continuously, and the position in the height direction is fixed. The steering wheel 1 is rotated to sequentially drive the steering shaft 2.1, the inner sleeve 2.3 and the spline shaft 2.5 of the sleeved bearing 5 to rotate, and then the full-hydraulic steering gear 6 is rotated to finish steering.

The invention is not described in detail in the prior art, but only in the preferred embodiments, but those skilled in the art will understand that the various changes made in the form and details without departing from the scope of the invention as defined in the claims are all within the scope of the invention.

Claims (2)

1. A steering wheel device for a tractor in which the height of a steering column is steplessly adjustable, comprising: the steering wheel assembly comprises a steering wheel (1), a sleeve and steering shaft assembly (2), an adjusting hand wheel (3), a base (4), a bearing (5) and a full hydraulic steering gear (6); the method is characterized in that: the steering wheel (1) is sleeved on a steering shaft (2.1) in the sleeve and steering shaft assembly (2) and is fixed by a nut; the base (4) penetrates from the bottom end of the sleeve and steering shaft assembly (2), the bearing (5) is sleeved on the spline shaft (2.5) from the bottom of the base (4) and is fixed by a clamp spring, the full-hydraulic steering gear (6) is connected with the base (4) by a bolt and a gasket, the shaft head of the spline shaft (2.5) in the sleeve and steering shaft assembly (2) is matched with the shaft hole of the full-hydraulic steering gear (6), a proper gap is reserved, and a section with threads of the adjusting hand wheel (3) is screwed into a threaded hole of the base (4).

2. A steering wheel unit for a tractor in which the height of the steering column is adjustable steplessly according to claim 1, characterized in that: the sleeve and steering shaft assembly (2) comprises: the steering mechanism comprises a steering shaft (2.1), a pin (2.2), an inner sleeve (2.3), an outer sleeve pressing piece (2.4) and a spline shaft (2.5); the round hole on the steering shaft (2.1) is aligned with the round hole on the inner sleeve (2.3), and the pin (2.2) is inserted into the aligned holes for positioning; the external spline of integral key shaft (2.5) inserts the internal spline inslot of interior sleeve pipe (2.3), and with overcoat pipe pressfitting (2.4) suit outside interior sleeve pipe (2.3), separation blade, jump ring are all adorned in proper order to overcoat pipe pressfitting (2.4) both ends, and the jump ring is fixed at overcoat pipe pressfitting (2.4) tip.

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