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A strain gauge lead wire outlet device

An outlet device and strain gauge technology, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of long operation time, many twisting turns, inability to remove the outlet components, etc., and achieve the effect of quick operation and simple operation.

Active Publication Date: 2020-06-09
CHINA AIRPLANT STRENGTH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This outlet assembly and its sealing method have three disadvantages: the first is that after the seal is solidified, the newly added strain measurement wires cannot be drawn out through the outlet, and another outlet needs to be opened; the second is that after the test is completed, it must be The flat cable is cut at the outlet, resulting in the loss of the length of the flat cable; the third is that the cured sealant in the outlet assembly cannot be removed, so that the outlet assembly cannot be used again
[0007] This wire outlet assembly and its sealing method have three disadvantages: the first is to use a wrench to operate, because one end of the wire outlet needs to be connected to the test piece, so the space is limited and the operation is inconvenient; the second is to twist the bolt to open and close. The number is large, and the operation time is long; the third is that when using a wrench to tighten the bolts, the tightening force is difficult to grasp due to the enlarged force arm, which may cause cable pressure loss

Method used

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  • A strain gauge lead wire outlet device
  • A strain gauge lead wire outlet device
  • A strain gauge lead wire outlet device

Examples

Experimental program
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Embodiment Construction

[0049] Provide a strain gauge lead wire outlet device, the device includes a lock switch 1, a wheel stopper 2, a steering wheel 3, a sealing block 4, a bolt 5, a sealing cover 6 and a main outlet channel 7;

[0050] A lock switch includes a lock head, a spring and a card seat;

[0051] The wheel stopper 2 includes a central through hole, and the lock switch 1 is installed on the side of the wheel stopper 2;

[0052] The steering wheel 3 is a toothed ring, and an involute groove is opened on the surface of the toothed ring;

[0053] The sealing block 4 has a central through hole, and the sealing block 4 protrudes along the axial direction to form an outwardly extending button;

[0054] The outlet main channel 7 is a sleeve structure, one end of the outlet main channel 7 is provided with an external thread, and is threaded with the inner nut 9, and a rubber gasket 8 is also clamped between one end of the outlet main channel 7 and the inner nut 9;

[0055]The wheel stopper 2, t...

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Abstract

The invention relates to a strain gauge lead wire outlet device which is used for leading out strain lines in strength tests of a structure with charge pressure load. The device is easy to operate andcan be rapidly operated by a single person without needing a tool, and the strain lines can be ensured not to be subjected to pressure loss; according to the led number of the strain lines, accurateconstant-speed step-by-step control of seal can be realized; the device has a self-locking function, and continuous seal is realized; and the device can serve as general equipment to be repeatedly used.

Description

technical field [0001] The invention relates to a strain gauge lead wire outlet device, which is used for leading out strain gauge wires in structural strength tests with pressurized loads. Background technique [0002] In the structural strength test with compression load, the strain measurement wires drawn from the inside of the test piece are usually 50-core flat cables (width 64mm). [0003] In the past, there are two ways to lead out strain gauge wires: [0004] One is to tear apart the adjacent wires of the flat cable, bundle them through the outlet assembly, and then fill the outlet with sealant (such as AM-120A sealant). After the sealant is cured, the outlet is sealed. [0005] This outlet assembly and its sealing method have three disadvantages: the first is that after the seal is solidified, the newly added strain measurement wires cannot be drawn out through the outlet, and another outlet needs to be opened; the second is that after the test is completed, it mus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/02
CPCG01N3/02
Inventor 樊优优王俊安张慧峰高莹洁
Owner CHINA AIRPLANT STRENGTH RES INST
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