Reciprocating oil seal performance testing testbed

Abstract

The invention discloses a reciprocating oil seal performance testing testbed. The reciprocating oil seal performance testing testbed comprises parts like a motor, a crank-link mechanism, a sliding bearing, an end cover, a cylinder barrel, a valve system, an oil seal and an oil supplement chamber, an output shaft of the motor is connected with the crank-link mechanism through key joint, and the crank-link mechanism is connected with a piston rod through an inner thread and an outer thread to drive the piston rod to move; oil leakage holes are formed in the bottom, provided withthe oil seal, ofthe cylinder barrel, a small beaker is put under the oil leakage holes to collect leaked oil, and the leakage amounts in different time periods are weighed through a precise balance scale; a temperature sensor is put in the position, close to the sealing portion, of the oil seal to record the temperature change of a lip portion in the motion process; the right end of the cylinder barrel is connected with the oil supplement chamber, and the oil supplement chamber can collect or supplement oil liquid during the reciprocating motion of the piston rod. By means of the reciprocating oil seal performance testing testbed, the pressure change in a sealing chamber of the reciprocating oil seal can be simulated, the leakage amounts and the temperature change of the oil seal under the conditions of different interference magnitudes, reciprocating speeds, in-oil pressures and friction coefficients are measured, and guidance is provided for manufacturing and using conditions of the oil seal.

Description

technical field [0001] The invention relates to a test bench for comprehensive performance testing of oil seals, in particular for testing the performance of reciprocating oil seals. Background technique [0002] With the rapid development of modern industry, especially the development of machinery industry, the use of reciprocating oil seals is becoming more and more extensive. The reciprocating oil seal is a sealing component used to prevent leakage of the reciprocating shaft or piston. Like other seals, the sealing performance of the reciprocating oil seal directly determines the operation of the machine and equipment. Even a small amount of leakage at the seal will affect the sealing effect. If the sealing performance of the reciprocating oil seal is not good, it is very It may reduce the service life of mechanical equipment, pollute the environment, and even pose a threat to personal safety. [0003] At present, most of the performance tests of reciprocating oil seals...

AI Technical Summary

Problems solved by technology

Like other seals, the sealing performance of the reciprocating oil seal directly determines the operation of the machine and equipment. Even a small amount of leakage at the seal will affect the sealing effect. If the sealing performance of the reciprocating oil seal is not good, it is very It may reduce the service life of mechanical equipment, pollute the environment, and even pose a threat to personal safety

[0003] At present, most of the performance tests of reciprocating oil seals use bench experiments to simulate the actual working conditions of the oil seal, but it takes a long time and the test results are not representative. Moreover, this test method can only test one performance index of the oil seal. It is not possible to comprehensively test the performance indicators of the oil seal, such as temperature, pressure, leakage, force, etc.

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