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A vehicle variable speed hydraulic steering gear

A technology of hydraulic steering gear and transmission, applied in the direction of fluid steering mechanism, etc., can solve the problems of high labor intensity of drivers and poor steering maneuverability, and achieve the effects of simple structure, low cost, and improved steering maneuverability.

Inactive Publication Date: 2016-04-13
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the steering of the loader has only one transmission ratio, which cannot meet the two requirements. The steering wheel angle range is generally ±2.5 to 3 turns. The steering maneuverability during operation is poor, and the labor intensity of the driver is high.

Method used

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  • A vehicle variable speed hydraulic steering gear
  • A vehicle variable speed hydraulic steering gear
  • A vehicle variable speed hydraulic steering gear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] like image 3 shown. The vehicle variable speed hydraulic steering gear of the present invention includes a rotary valve 101, a metering motor 102, a linkage shaft 15, and a partition 16;

[0033] The rotary valve 101 includes a valve body 11, a valve core 12, a valve sleeve 13, and a dial pin 14. The valve sleeve 13 is located in the circumferential space between the valve core 12 and the valve body 11, and the dial pin 14 and the valve sleeve 13 are pin-connected. , the dial pin 14 and the valve core 12 are rotationally connected with each other (there is a certain rotational angular displacement between them), and when the valve core 12 rotates, it is linked with the dial pin 14;

[0034] The metering motor 102 includes a rotor 17 and a stator 18, the rotor 17 rotates and revolves in the stator 18, and the inner hole of the rotor 17 has teeth;

[0035] One end of the linkage shaft 15 has teeth, and the toothed end is connected with the teeth of the inner hole of th...

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PUM

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Abstract

The invention discloses a vehicle variable-speed hydraulic steering gear. A speed variator is embedded between a rotating valve and a metering motor and has two speed ratios of inside engaged gear decelerating drive and direct drive, a valve sleeve of the rotating valve and a motor rotor rotate at a constant speed in direct drive, the valve sleeve of the rotating valve moves in a decelerated relative to the motor rotor when inside engaged gears are in decelerating drive, and accordingly, the flow of the metering motor can be increased according to the speed ratios under the condition of the same corner of a steering wheel. The vehicle variable-speed hydraulic steering gear is simple in structure and low in cost and meets the requirements of vehicles for various steering speed ratios, and steering control performance is improved.

Description

technical field [0001] The invention relates to the field of full hydraulic steering systems of engineering vehicles, in particular to a variable speed hydraulic steering gear for vehicles. Background technique [0002] like figure 1 The hydraulic steering system of a typical engineering vehicle is shown, which is mainly composed of the following components: oil pump 1, hydraulic steering gear 2, steering wheel drive shaft 3, steering wheel 4, steering cylinder 5, safety valve 6, check valve 7, fuel tank 8. [0003] like figure 2 Shown is the basic structure of the hydraulic steering gear 2, including a rotary valve 101, a metering motor 102, a linkage shaft 15, and a partition 16; wherein the rotary valve 101 is mainly composed of a valve body 11, a valve core 12, a valve sleeve 13, and a dial pin 14 The metering motor 102 is mainly composed of a rotor 18 and a stator 19. The inner hole of the rotor 18 has teeth, which is connected with one end of the linkage shaft 15, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/20
Inventor 迟永滨丁问司
Owner SOUTH CHINA UNIV OF TECH