Sealing pressure measurement method for vibration damper

Abstract

The objective of the invention lies in proposing sealing pressure measurement method for a vibration damper, so as to actually detect the axial sealing pressure of the vibration damper. The method comprises the following steps: modifying a working cylinder of the vibration damper; placing a pressure sensor between a direction guide device of the vibration damper and the modified working cylinder; enabling the sum of the lengths of the direction guide device, the pressure sensor and the modified working cylinder after assembly to be equal to the sum of the length of an original working cylinder and the length of the direction guide device; enabling a wire harness of the pressure sensor to be led to the outside of the vibration damper from a piston rod hole under the condition of no piston rod, sealing the vibration damper according to a normal sealing process; and measuring the sealing pressure of the vibration damper through the pressure sensor after an external force of sealing equipment is removed. The method accurately measures the sealing pressure of the vibration damper through the built-in pressure sensor, can adjust the sealing pressure of the sealing equipment in an actual assembly process according to the measurement result, and meets a requirement that different products need different sealing pressures.

Description

technical field [0001] The invention relates to the technical field of automobile chassis, in particular to a method for measuring the axial pressure of a seal of a shock absorber used in a vehicle. Background technique [0002] The sealing pressure of the shock absorber is a very important technological index in the process of processing the shock absorber. The sealing of the shock absorber is to fix the oil seal, guide, working cylinder, bottom valve and oil storage cylinder inside the shock absorber axially. The size of the pressure directly affects the degree of axial fixation; at present, it has been impossible to accurately measure the actual sealing pressure of the shock absorber, and the pressure value of the shock absorber sealing can only be set by the shock absorber sealing equipment, because of product differences (The wall thickness of the oil storage cylinder, the overall length of the shock absorber), often the sealing pressure is too large, resulting in the c...

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Problems solved by technology

[0002] The sealing pressure of the shock absorber is a very important technological index in the process of processing the shock absorber. The sealing of the shock absorber is to fix the oil seal, guide, working cylinder, bottom valve and oil storage cylinder inside the shock absorber axially. The size of the pressure directly affects the degree of axial fixation; at present, it has been impossible to accurately measure the actual sealing pressure of the shock absorber, and the pressure value of the shock absorber sealing can only be set by the shock absorber sealing equipment, because of product differences (The wall thickness of the oil storage cylinder, the overall length of the shock absorber), often the sealing pressure is too large, resulting in the cracking of the bottom valve of the shock absorber, or the sealing pressure is insufficient, resulting in the axial direction of the shock absorber cannot be fixed, and internal movement causes Abnormal sound failure of shock absorber

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