Multifunctional pneumatic reciprocating sealing performance test bench

Abstract

A multifunctional pneumatic reciprocating sealing performance test bench comprises a servo electric cylinder. The servo electric cylinder is installed on a workbench through a positioning cushion block. A servo electric cylinder drive rod is connected to a piston rod of a test air cylinder through a hinge. The test air cylinder is installed on a pair of precise ball sliding blocks through a fixing plate. The precise ball sliding blocks are installed on a precise guide rail fixed to the workbench. The other end of the test air cylinder is connected with one end of a tension and pressure sensor through a flange, the other end of the tension and pressure sensor is fixed to the workbench through a first supporting piece, and a grating scale displacement sensor is installed on the workbench below the tested piston rod. According to the multifunctional pneumatic reciprocating sealing performance test bench, friction force and the leakage rate of pneumatic sealing can be comprehensively measured, and the multifunctional pneumatic reciprocating sealing performance test bench has the advantages of being simple in structure, easy and convenient to mount and dismount, accurate in measurement, various in test function and the like, the air cylinders are convenient to control, and different structures of sealing rings can be changed.

Description

technical field [0001] The invention belongs to the technical field of sealing detection, in particular to a multifunctional pneumatic reciprocating sealing performance test bench. Background technique [0002] As the most commonly used sealing form, reciprocating seals play a very important role in the machinery industry. Among them, pneumatic seals play a key role in automobile manufacturing press lines, locomotive braking equipment, cylinder drives and other occasions according to their own characteristics. The performance of the pneumatic seal directly affects the working stability, safety and product quality of the equipment. With the improvement of working requirements such as reciprocating stroke, speed and working life, the performance requirements such as stability and reliability of seals are also getting higher and higher. Therefore, the basic research on pneumatic reciprocating seals is an imperative work. . [0003] However, there are relatively few studies on...

AI Technical Summary

Problems solved by technology

[0004] Existing research on pneumatic reciprocating seal tests often focuses on friction and ignores research on leakage. In actual work, if the leakage is too large, the work requirements cannot be guaranteed, so leakage is also an important indicator for evaluating sealing performance.

Due to the asymmetrical structure of the Y-shaped sealing ring in the stamping line of automobile production, the friction force experienced by the two directions of movement is also different. Many existing devices use face-to-face symmetrical installation of the sealing ring, so that the friction in the two directions of the sealing ring cannot be measured. Different friction, this problem needs to be solved

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