Axle gearbox pressure relief device and excavator axle with same

Abstract

The invention discloses an axle gear box pressure relief device and an excavator axle provided with the same. The pressure relief device comprises a base body, an air core seat and a valve core assembly, wherein the base body is used for being connected with a gear box body, the air core seat is arranged on the base body, the valve core assembly is arranged in a cavity of the air core seat and used for exhausting gas in the gear box body, an air inlet of the valve core assembly is communicated with the inside of the gear box body, and an exhaust hole of the valve core assembly is communicated with the outside air. According to the axle gear box pressure relief device, the valve core assembly which can exhaust gas in the gear box body is arranged, air can be exhausted through the valve core assembly when the pressure in the gear box body is over high for relieving pressure and balancing the pressure in the box body, so that the gear box body can be prevented from being damaged, damage of high pressure to a transmission shaft seal component is reduced, grease leakage can be effectively prevented, a gear in the gear box can be indirectly protected, and the effects of lubricating effectively and prolonging the service life of the gear are realized.

Description

technical field [0001] The invention belongs to the technical field of engineering machinery, in particular, the invention relates to a pressure relief device for an axle gearbox and an excavator axle equipped with the same. Background technique [0002] On the axle gear case of existing wheeled excavator, adopt plug screw plug to seal at the position of lubricating grease filling hole. During the working process of the gearbox, the internal gears will generate heat, which will cause the temperature of the gas inside the relatively airtight gearbox cavity to rise accordingly, resulting in the volume expansion of the gas. While plugging the plug to seal the grease leakage, the gas inflated in the gear box cannot be effectively released, causing the internal air pressure of the gear box to be too high, and a certain pressure difference is formed between the box body and the outer wall of the gear box. At this time, the gas will be released at the flange connection of the tran...

AI Technical Summary

Problems solved by technology

While plugging the plug to seal the grease leakage, the gas inflated in the gear box cannot be effectively released, causing the internal air pressure of the gear box to be too high, and a certain pressure difference is formed between the inside and the outer wall of the gear box

At this time, the gas will be released at the flange connection of the transmission shaft, which is relatively weak in the airtightness of the box, causing damage to the gearbox box, and at the same time, the lubricating grease inside the box may overflow, causing leakage

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