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Sealing structure of gear and rack steering device

A technology of sealing structure and rack and pinion, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve problems such as seal prolapse, increase interference and resistance, reduce product quality risk, and improve production efficiency Effect

Inactive Publication Date: 2016-01-13
WUHU HENGLONG AUTO STEERING SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a rack-and-pinion steering gear sealing structure for the existing problems in the prior art. The problem that the parts come out of the mating part after being durable

Method used

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  • Sealing structure of gear and rack steering device
  • Sealing structure of gear and rack steering device
  • Sealing structure of gear and rack steering device

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Experimental program
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Embodiment Construction

[0017] figure 1 It is a structural schematic diagram of a gear shaft adjusting screw plug in the prior art. The structural design of the high and low pressure oil seals or dust seals used in the prior art is relatively simple, especially after the high and low pressure oil seals and dust seals receive the hydraulic impact force and the axial and radial forces are durable, the high and low pressure oil seals and the anti The dust seal has the phenomenon and risk of coming out, which will lead to oil leakage from the hydraulic sealing part of the steering gear or water leakage from the dust-proof part of the steering gear seal, which will lead to the failure of the steering hydraulic power booster and the internal corrosion of the steering gear, resulting in steering sticking and abnormal noise.

[0018] figure 2 It is a structural schematic diagram of the sealing structure of the rack and pinion steering gear of the present invention, image 3 Schematic diagram of the struct...

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Abstract

The invention discloses a sealing structure of a gear and rack steering device. The sealing structure comprises a gear shaft adjusting plug screw (1) and a dust seal (2) matched with the gear shaft adjusting plug screw (1). The dust seal (2) is installed in the gear shaft adjusting plug screw (1) and closely attached to the inner wall of the gear shaft adjusting plug screw (1). A groove (3) is formed in the portion, matched with the dust seal (2), of the inner wall of the gear shaft adjusting plug screw (1). According to the sealing structure of the gear and rack steering device, a groove structure is designed at the high-low pressure oil seal portion or the dust seal assembling portion; and after a high-low pressure oil seal and the dust seal are completely assembled to be in place according to the existing machining accuracy requirement and under the assembling technical condition, the groove structure portion can have the barb function when bearing large axial component force, the interference magnitude and the resistance of sealing piece rubber and the matched portion are increased, and then the problem that a sealing piece disengages from the matched portion after working for a long time is solved.

Description

technical field [0001] The invention relates to an anti-dropping device for the sealing structure of a rack and pinion steering gear, in particular to a sealing part suitable for a hydraulic cylinder body, an assembly part of a dust seal and the like. Background technique [0002] The seal between the hydraulic piston of the rack and pinion hydraulic steering gear, the seal between the upper and lower structures of the hydraulic steering valve, and the dust-proof seal of the input shaft of the mechanical steering gear are all sealed and protected by high and low pressure oil seals and dust seals. dust. The high and low pressure oil seals and dust-proof seals of the steering gear generally require high machining accuracy, and the roughness is below Ra1.6. For the press-fitting of the seal, a certain amount of lubricating oil will be sprayed on the matching parts or an appropriate amount of grease will be applied to the outer diameter of the dust seal, so as to ensure that th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/32
Inventor 梁谨宁心莲江火文
Owner WUHU HENGLONG AUTO STEERING SYST
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