Anchor rod and anchor rod stressing tester
A bolt and locking device technology, which is used in the installation of bolts, mining equipment, earthwork drilling and mining, etc., can solve the problem of not measuring the force of the bolt body and the backing plate at the same time, and can not quickly reflect the force status of the anchoring structure. Difficulty and other problems, to achieve the effect of easy installation, low production cost, and strong anti-interference ability
Inactive Publication Date: 2017-02-22
DALIAN UNIV OF TECH +1
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Problems solved by technology
These measurement methods have disadvantages such as complicated operation and difficult implementation.
Moreover, the above method of stress test cannot quickly reflect the stress condition of the anchorage structure
At present, there is no relevant report on the simultaneous measurement of the force of the anchor rod body and the backing plate.
Method used
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Embodiment
[0034] Please refer to figure 1 , this embodiment provides a bolt force testing device 100 , which includes a bolt 200 and a data acquisition system 300 .
[0035] Please refer to figure 2 , the anchor rod 200 includes a rod body 500 , a backing plate 400 and a locking device 600 .
[0036] Please refer to figure 2 , the backing plate 400 includes a first surface 410 and a second surface 420 disposed opposite to each other. Preferably, the backing plate 400 has a concave portion 430 that is recessed toward the side of the first surface 410 . The backing plate 400 is provided with a through hole 460, the through hole 460 penetrates the first surface 410 and the second surface 420, and is disposed in the concave portion 430, preferably, the through hole 460 is disposed in the center of the concave portion 430, and its size and shape are the same as the rod body. The rod body 500 is arranged in the through hole 460 in cooperation with the rod body 500. In this embodiment, th...
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The invention relates to an anchor rod and an anchor rod stressing tester, and belongs to the technical field of anchoring. The anchor rod comprises a rod body, a base plate and a locking device. The locking device is used for locking the rod body to a first surface. At least one first groove is formed in the side wall of the rod body. Each first groove is provided with a fiber bragg grating sensor internally. The base plate comprises the first surface and a second surface, and is provided with a through hole matched with the rod body. The first surface and the second surface are arranged oppositely. The through hole is communicated with the first surface and the second surface. The first surface is provided with at least one second groove. A piezoelectric ceramic sensor is arranged in each second groove. The anchor rod is simple to produce and low in cost. The anchor rod stressing tester comprises a data acquisition system and the anchor rod. The fiber bragg grating sensors and the piezoelectric ceramic sensors are connected with the data acquisition system electrically. The anchor rod stressing tester can measure stressing conditions of the rod body and the base plate of the anchor rod at the same time, and is simple and convenient to operate, high in measurement accuracy and high in anti-jamming capability.
Description
technical field [0001] The invention relates to the technical field of anchoring, in particular, to an anchor rod and an anchor rod stress testing device. Background technique [0002] Anchoring technology, as a superior rock and soil reinforcement technology, is more and more widely used in various engineering fields. important role. [0003] Piezoelectric ceramic sensing technology is a new sensing technology that has emerged with the development of piezoelectric ceramics. Piezoelectric coils can be applied in various forms of protection (such as metal protection, marble protection, concrete protection, etc.). Piezoelectric ceramics It can convert weak mechanical vibrations into electrical signals, has high sensitivity, high measurement accuracy, small size, no moisture absorption, long life, and has a very broad application prospect in the field of underground engineering. [0004] As an important part of the bolt system, the anchor plate and the rod body will be direct...
Claims
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IPC IPC(8): E21D21/02
CPCE21D21/02E21D21/0093
Inventor 霍林生汪波宋钢兵莫晨聪
Owner DALIAN UNIV OF TECH