Device and method for testing waterproof performance of reduction gearbox

Abstract

The invention provides a waterproof performance testing device and a waterproof performance testing method for a reduction gearbox. The waterproof performance testing device comprises a testing device, a tested sample piece, a water conveying structure, a reservoir and a shaking mechanism. The testing device comprises a water spraying device, a water spraying tank and a support structure. The testing device is arranged above the reservoir and the tested sample piece; the water spraying device is arranged at the lower end of the testing device; the water spraying tank is fixed above the water spraying device; one end of the support structure is fixed in the reservoir, and the other end is connected with the water spraying tank. The water conveying structure comprises a water inlet pipe, a water outlet pipe and a water pump; the water pump is fixed outside the reservoir; the other end of the water inlet pipe is connected with the water pump; the other end of the water outlet pipe is connected with the water pump; the shaking mechanism is used for simulating vehicle shaking to detect the sealing state of the reduction gearbox. The sealing problem can be found in the early stage of development of the reduction gearbox, rectification and verification can be conducted in time, water circulation can be achieved, and water resources are saved.

Description

technical field [0001] The invention relates to the technical field of testing the waterproof performance of a gearbox, in particular to a waterproof performance testing device and a testing method for a gearbox. Background technique [0002] In the design, development and manufacturing process of the gearbox, the waterproof performance is an important indicator to measure the gearbox. If there is oil leakage or internal water ingress, it will affect the product development cycle and production rework, which is time-consuming, laborious and expensive, and affects delivery. , causing the gearbox to fail, causing customer complaints, and causing an increase in after-sales problems. Most manufacturers use the air tightness test after the gearbox is assembled. The actual test conditions are quite different from the real working conditions of the whole vehicle, and it is impossible to simulate the impact of rain on the gearbox under real working conditions; especially on the gear...

AI Technical Summary

Problems solved by technology

[0002] In the design, development and manufacturing process of the gearbox, the waterproof performance is an important indicator to measure the gearbox. If there is oil leakage or internal water ingress, it will affect the product development cycle and production rework, which is time-consuming, laborious and expensive, and affects delivery. , causing the gearbox to fail, causing complaints from customers, and causing an increase in after-sales problems

Most manufacturers use the air tightness test after the gearbox is assembled. The actual test conditions are quite different from the real working conditions of the whole vehicle, and it is impossible to simulate the impact of rain on the gearbox under real working conditions; especially on the gearbox Most of the normally open exhaust valves are used. In the actual test, the exhaust valve will be removed for air tightness testing, and the sealing performance at the exhaust valve cannot be tested.

There are many after-sales cases that prove that oil leakage and rainwater ingress are easy to occur at the exhaust valve

Images