Shield tail brush dynamic sealing performance testing device and testing method thereof
A technology of dynamic sealing and testing device, which is applied in liquid/vacuum measurement for liquid tightness, and by detecting the appearance of fluid at the leakage point, etc., can solve the problem of low test accuracy of the pressure bearing capacity of the shield tail brush, and achieve accurate The effect of data support
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[0041] Embodiment 3, a kind of test method of shield tail brush dynamic tightness test device, the steps are as follows:
[0042] S1: Assemble the test device so that the inner cylinder 2 is located in the outer cylinder 1, and the side wall of the outer cylinder 1 and the side wall of the inner cylinder 2 form a sealed grease chamber 14; The rear part of the cylinder body 2 forms a sealed pressure chamber 15 ; the shield tail brush 11 is located in the sealed grease chamber 14 . Wherein, the steps of assembling the test device are as follows:
[0043] S1.1: Fix the mounting bracket 9 in the designated position;
[0044] S1.2: Install the support beam 4 and the hinged support frame 8 on the mounting frame 9 in sequence;
[0045] S1.3: Install the upper radial telescopic oil cylinder 501 and the lower radial telescopic oil cylinder 502 on the support beam 4;
[0046] S1.4: Connect the inner cylinder 2 to the upper radial telescopic oil cylinder 501 and the lower radial telescop
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