Steering gear oil nozzle plug

Abstract

The invention provides a steering gear oil nozzle plug which comprises a steering gear connecting portion and a tightening portion. An air pressure control portion is arranged between the steering gear connecting portion and the tightening portion and comprises an air pressure chamber and a ventilation portion, the air pressure chamber comprises a valve seat and screw plugs arranged at two ends of the air pressure chamber, an elastic element and a rigid element are arranged between the screw plugs, the ventilation portion includes a transverse ventilation portion and a longitudinal ventilation portion, the longitudinal ventilation portion is communicated with the steering gear connecting portion, one end of the transverse ventilation portion is communicated with the air pressure chamber, and the other end of the transverse ventilation portion is communicated with the longitudinal ventilation portion. An oil filling nozzle of a shell of a steering gear can be sealed, air can be automatically exhausted and supplemented, the pressure of an inner cavity of the steering gear is automatically adjusted, too high or too low pressure of the inner cavity of the steering gear is avoided, and the problems of performance reduction and oil leakage faults of the steering gear can be solved.

Description

technical field [0001] The invention relates to a mechanical device, in particular to a blockage of an oil nozzle of an automobile steering gear. Background technique [0002] Such as Figure 1-2 As shown, the steering gear assembly includes a steering gear housing 3 , a steering gear inner cavity 4 and a steering gear oil nozzle plug 1 , wherein the steering gear oil nozzle plug 1 includes a steering gear connecting portion 1 a and a tightening portion 1 b. [0003] When working, important components such as internal rack and pinion transmission pairs, screw transmission pairs and bearings need to be lubricated, so the inner chamber 4 of the steering gear requires good sealing performance, and no external leakage is allowed, so add lubricating oil Finally, use the grease nipple to plug and seal the steering gear housing grease nipple. [0004] The existing inner cavity 4 of the steering gear is completely sealed, and the pressure in the inner cavity 4 of the steering gear ...

AI Technical Summary

Problems solved by technology

When the steering gear works in a high-temperature area for a long time, a large amount of heat will be generated, and the pressure in the inner cavity 4 of the steering gear will increase, resulting in deterioration of the lubricating oil, resulting in poor lubrication of the internal parts of the steering gear, and the seal will bear additional axial force outward, resulting in steering Engine performance degradation and oil leakage failure

When the steering gear works in a low temperature area for a long time, the pressure in the inner cavity 4 of the steering gear becomes smaller, forming a negative pressure in the inner cavity, causing the seal to bear an additional axial force inward, resulting in oil leakage failure of the steering gear

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