Prestress measuring anchor rod and using method
A prestressing and bolting technology, which is used in the installation of bolting, earth-moving drilling, mining equipment, etc., can solve the problem of inability to apply prestressing, inability to monitor and analyze the force state of prestressed bolts, and unable to truly reflect prestressed bolts. stress environment and other problems, to achieve the effect of convenient installation and easy operation
Active Publication Date: 2015-06-10
SHANDONG UNIV
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Problems solved by technology
For example, the patent application No. 02255332.0 discloses a direct-reading force-measuring anchor, which cannot be applied to prestress in actual use, and cannot truly reflect the actual stress environment of the prestressed anchor in the project, so that it is impossible to measure the force of the prestressed anchor. Monitor and analyze the force state of the rod
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[0015] The present invention will be described in further detail below in conjunction with the embodiments in the accompanying drawings.
[0016] Refer to attached figure 1 And attached figure 2 , a prestressed force-measuring anchor rod, comprising an anchor rod 1, a nut 2, a tray 3, a resistance strain sensor 4, a resistance strain gauge 9, a wire 5, a measurement interface 6, a protective casing 7, and an end cap 8; the anchor rod 1, longitudinal grooves are arranged on both sides; a resistance strain sensor 4 is installed in the longitudinal groove; the passing wire of the resistance strain sensor 4 is connected with the measurement interface 6 and the resistance strain gauge 9 in turn; the measurement interface 6 Installed in the protective shell 7; the protective shell 7 is welded on one end of the anchor rod 1; the end cover 8 is covered on the protective shell 7; the rod body of the end of the anchor rod 1 welded with the protective shell 7 is provided with threads, ...
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The invention relates to a prestress measuring anchor rod and a using method. The prestress measuring anchor rod comprises an anchor rod, a nut, a tray, resistance strain sensors, a resistance strain gauge, guide wires, a measuring interface, a protective housing and an end cover, wherein longitudinal grooves are arranged on the two sides of the anchor rod; the resistance strain sensors are arranged inside the grooves; the resistance strain sensors are connected with the measuring interface and the resistance strain gauge by the guide wires in sequence; the measuring interface is arranged inside the protective housing; the protective housing is welded on one end of the anchor rod; the end cover is covered on the protective housing; the anchor rod is provided with threads on the rod body on the end where the protective housing is welded; the rod with threads is assembled with the nut and the tray. The prestress measuring anchor rod has the advantages of convenience in installation and easy operation, can be widely applied to monitoring stress of the pre-stressed anchor rod in such underground engineering fields as water conservancy, traffics, mines and the like.
Description
technical field [0001] The invention relates to a force-measuring device, in particular to a prestressed force-measuring bolt used in the field of geotechnical engineering such as mines and a method for using it. Background technique [0002] Anchor bolts are widely used in geotechnical engineering fields such as coal roadway support, slope reinforcement, and tunnel support. It has been widely used in engineering, and it can be used to verify and optimize design parameters, improve construction technology, or study failure mechanisms. For example, the patent application No. 02255332.0 discloses a direct-reading force-measuring anchor, which cannot be applied to prestress in actual use, and cannot truly reflect the actual stress environment of the prestressed anchor in the project, so that it is impossible to measure the force of the prestressed anchor. The stress state of the rod is monitored and analyzed. Contents of the invention [0003] The purpose of the present inv...
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IPC IPC(8): E21D21/02
Inventor 李术才王琦江贝王德超李为腾王洪涛
Owner SHANDONG UNIV