Waterproof force measuring anchor rod
A waterproof, bolt technology, applied in the direction of measuring force, installing bolt, measuring device, etc., can solve the problem of short circuit fault of strain gauge, affecting normal use, etc., to achieve good sealing performance, prevent short circuit, and improve reliability. Effect
Pending Publication Date: 2018-11-20
HUAYANG NEW MATERIAL TECH GRP CO LTD
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Problems solved by technology
However, the moisture in the surrounding rock will slowly enter the force-measuring bolt, which will cause a short-circuit failure of the strain gauge and affect the normal use.
Method used
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Embodiment Construction
[0016] Twelve installation grooves 9 are arranged symmetrically along the entire length of the rod body 1, and a resistance strain gauge 2 is embedded in each installation groove 9 along the axial direction of the rod body 1, and the installation groove 9 is filled with packaging material 5, and the rod body 1 has a center Through hole 7, the upper end of rod body 1 is closed, and protective cover is installed on the lower end, for the convenience of opening and closing of protective cover, it is convenient for external equipment to connect data output connector 3, protective cover includes protective cover end cap 4 and protective cover connector 6. The protective cover is provided with a data output joint 3, and the position corresponding to the resistance strain gauge 2 in the installation groove 9 of the rod body 1 is provided with a perforation 8 communicating with the central through hole 7, and each perforation 8 is provided with a connection resistance strain gauge 2 and...
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Abstract
The invention relates to a waterproof force measuring anchor rod which aims to prevent water from entering to lead to short circuit. The waterproof force measuring anchor rod comprises a rod body, anaviation plug, resistance strain gages, a data output joint and a protecting hood. A plurality of mounting slots are symmetrically formed left and right in the rod body by taking the rod body as axis;the rod body is a hollow cylinder, a central through hole is formed in the axis of the rod body, the top end of the rod body is a closed end, and a section of length is reserved in each of upper andlower ends of the rod body; the resistance strain gages are directly attached to the mounting slots in two sides of the rod body, the mounting slots in one side of the rod body are divided into upperand lower groups, and the two groups are connected in parallel and are then connected to the data output joint in series; the two resistance strain gages corresponding to two sides of the rod body areconnected in series; the resistance strain gages in the rod body are connected to the data output joint through the aviation plug; the mounting slots are filled with a packaging material, the protecting hood is mounted at the bottom end of the rod body, the data output joint is arranged in the protecting hood, a transverse through hole communicating to the central hole is formed in each mountingslot, a lead communicating the resistance strain gage to the data output joint is formed in each transverse through hole, and the lead is adhered in the middle of each resistance strain gage.
Description
technical field [0001] The invention relates to the technical field of force measurement of anchor bolts, in particular to a force measurement bolt. Background technique [0002] Safety monitoring occupies a very important position in geotechnical engineering. Anchor (cable) reinforcement is an important form of geotechnical reinforcement. Among them, bonded anchor bolts are the most used, and bonded anchor bolts are generally divided into There are two forms of end anchorage and full-length anchorage. Full-length anchorage bolts are very effective for strengthening soft rock formations and soil layers. In recent years, they have been widely used in geotechnical engineering such as mine tunnels, traffic tunnels, and deep foundation pit reinforcement. . For end-anchored anchors, the working resistance of the free section is equal, and the working resistance of the anchor can be monitored with a disc-type anchor dynamometer placed outside the anchor hole or a steel bar meter ...
Claims
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IPC IPC(8): E21D21/02G01L1/22
CPCE21D21/02G01L1/22
Inventor 马忠跃杨晓成王海凤
Owner HUAYANG NEW MATERIAL TECH GRP CO LTD