CN103134725A - Anchor rod performance test device - Google Patents

Abstract

The invention discloses an anchor rod performance test device. The anchor rod performance test device is suitable for test analysis of dynamic shock resistance and static force tensile deformation characteristic of a common anchor rod, and comprises an anchor rod clamping device, an anchor rod positioning device, a lifting stranded wire, an impact heavy disc, a positioning guide rail, a frame body, a fixing foot frame, a positioning rod, a buffering mat and a static force hydraulic tensile device, wherein reading scales are arranged on the positioning guide rail, and a displacement sensor is arranged on the static force hydraulic tensile device. The anchor rod performance test device can be used for testing the capacities of dynamic impact, such as rock explosion resistance and rock burst, of the anchor rod, and for testing the tensile deformation characteristics of resisting against surrounding rock deformation of the anchor rod, can be used in both a dynamic state and static state, is simple and convenient to operate, and is strong in applicability.

Description

A bolt performance testing device

technical field

The invention relates to a bolt performance testing device, more specifically a testing device for static tensile deformation and dynamic impact resistance performance of a bolt, belonging to the bolt performance testing technology.

Background technique

Bolt support is a common method of surrounding rock reinforcement and support in ground engineering such as slopes and deep foundation pits, as well as underground caverns such as tunnels and stopes. The performance of anchor bolts usually refers to the static tensile deformation characteristics and dynamic impact resistance characteristics of anchor bolts. In recent years, with the emergence of large deformation of surrounding rock, rockburst, rock burst and other highly destructive disasters, the tensile deformation characteristics and dynamic anti-shock characteristics of anchor rods against deformation are the key to the effect of anchorage support. At present, the material testing machine commonly used to test the tensile deformation characteristics of anchor rods cannot meet the testing requirements due to defects such as single function and small test range.

Contents of the invention

In view of the above problems, the object of the present invention is to provide a bolt performance testing device with simple structure, convenient installation and strong operability. In order to achieve the above object, the technical solution of the present invention is: a bolt performance test device, the test device consists of a bolt positioner, a lifting strand, an impact weight plate, a positioning guide rail, a frame body, a fixed tripod, a positioning rod , buffer pad, and static hydraulic stretching device. The lower end of the frame body is fixedly connected with the fixed tripod. The inner wall of the frame body is symmetrically provided with positioning guide rails on both sides. There is a vertical center through hole, the upper end of the impact weight plate is fixedly connected to one end of the lifting strand, the anchor rod positioner is cylindrical and hollow, the upper end passes through the upper beam of the frame body, and is fixedly connected to the center of the upper beam of the frame body, and the lower end passes through the center of the upper beam of the frame body. Through the vertical center through hole of the impact weight plate, the buffer pad is set in the frame body, the buffer pad is located at the bottom of the frame body, and the static hydraulic stretching device is placed above the buffer pad, and positioning holes are symmetrically opened on both sides of the static hydraulic stretching device , the positioning rod moves through the frame body and is inserted into the positioning holes on both sides of the hydrostatic stretching device.

A reading scale is arranged on the positioning guide rail, and the scale accuracy is 1mm.

A displacement sensor is arranged on the static hydraulic stretching device.

Due to the adoption of the above technical scheme, the anchor bolt performance testing device of the present invention can not only test the anchor bolt’s static tensile resistance to the deformation of surrounding rock, but also test its impact resistance characteristics under dynamic loads such as rock bursts and rock bursts. It has the characteristics of both dynamic and static. The setting of the displacement sensor can accurately record the static tensile deformation characteristics of the tested anchor rod. The reading scale set on the positioning guide rail can conveniently set the predetermined impact height and visually observe the measured anchor. Rod dynamic shock resistance process. The bolt performance testing device of the invention has the advantages of simple structure, easy operation and strong applicability.

Description of drawings

Fig. 1 is the structural design schematic diagram of bolt performance testing device of the present invention

Fig. 2 is a schematic diagram of the use state of the dynamic impact resistance performance test of the bolt performance test device of the present invention

Fig. 3 is a schematic diagram of the use state of the static tensile performance test of the bolt performance test device of the present invention

Detailed ways

The present invention will be described in further detail below in conjunction with accompanying drawing

see Attachment

A bolt performance testing device, the testing device consists of a bolt positioner 2, a lifting strand 3, an impact weight plate 4, a positioning guide rail 5, a frame body 8, a fixed tripod 9, a positioning rod 10, a buffer pad 11, a static force Hydraulic stretching device 12 is formed. The frame body 8 is composed of a symmetrical bracket and an upper beam. The lower end of the frame body 8 is fixedly connected with the fixed foot frame 9. The inner wall of the frame body 8 is symmetrically provided with positioning guide rails 5 on both sides. The positioning guide rail 5 is provided with a reading scale, and the scale accuracy is 1mm. . The impact weight plate 4 is slidingly installed between the symmetrical positioning guide rails 5. According to different test requirements, the impact weight plate 4 is composed of 1-6 identical discs. The impact weight plate 4 has a vertical center through hole. The impact weight plate 4 The upper end surface is fixedly connected with one end of the lifting strand 3, and the other end of the strand 3 is externally connected to a winch. The anchor locator 2 is cylindrical and hollow. At the center of the upper beam, the lower end of the anchor rod locator 2 passes through the vertical center through hole on the impact weight plate 4, and the buffer pad 11 is arranged in the symmetrical support of the frame body 8, and the buffer pad 11 is located at the bottom of the frame body 8, and the static hydraulic pull The stretching device 12 is composed of an oil cylinder, an oil cylinder shell and a piston rod. A connection plate is provided at the top of the piston rod. The static hydraulic stretching device 12 is placed above the buffer pad 11. The displacement sensor 13, the displacement sensor 13 is located between the connecting plate and the oil cylinder, and the two sides of the oil cylinder shell of the hydrostatic stretching device 12 are symmetrically provided with positioning holes, and the positioning rod 10 moves through the frame body 8, and is inserted into the two sides of the oil cylinder shell. in the positioning hole. The displacement sensor 13 is externally connected to a data collector, the hydrostatic stretching device 12 is externally connected to a hydraulic controller, and the data collector and hydraulic controller are simultaneously connected to the data processor.

When the bolt performance testing device of the present invention is used to test the dynamic impact resistance of the bolt, the positioning rod 10 is pulled out, and the static hydraulic stretching device 12 is removed. One end of the anchor rod 7 to be tested is fixed to the upper beam of the frame body 8 through the anchor rod clamping device 1; the other end passes through the anchor rod positioner 2 and is connected with the impact tray 6; The pull rope end of the rope displacement sensor is connected under the impact tray 6, the pull rope displacement sensor is externally connected to the data collector, and the data collector is connected to the data processor. The positioning guide rail 5 rises to a predetermined height, and the predetermined height can be read by a scale on the positioning guide rail 5 . Release the effect of the lifting strand 3 on the impact weight plate 4, the impact weight plate 4 falls freely along the positioning guide rail 5, and transmits the force to the anchor rod 7 through the impact tray 6; under the action of this impact force, the measured anchor rod 7 produces Stretch, the amount of stretch is tested by the rope displacement sensor, the data collector transmits the test data to the data processor, and the data processor obtains the dynamic impact resistance characteristics of the test anchor.

The bolt performance testing device of the present invention, when carrying out the static tensile deformation characteristic test of the bolt, the buffer pad 11 is placed on the ground in advance, and the impact weight plate 4 and the lifting strand 3 are removed; the static hydraulic stretching device 12 passes the positioning rod 10 is inserted into the positioning holes on both sides of the oil cylinder shell, and the static hydraulic tensioning device 12 and the tested anchor 7 are fixed on the same center line; the tested anchor 7 is fixed on the frame body through the anchor clamping device 1 8 upper beam; one end of the anchor rod 7 to be tested is fixed on the upper beam of the frame body 8, the other end passes through the anchor rod positioner 2 and is connected with the static hydraulic stretching device 12, and the displacement sensor 13 is located between the connecting plate and the oil cylinder, and the displacement The sensor 13 is connected to the data collector, and the data collector is connected to the data processor; the hydraulic oil enters the jack, and under the action of the oil pressure jack, the anchor rod 7 to be tested is stretched; the hydrostatic stretching device 12 is externally connected to a hydraulic controller, The data collector and the hydraulic controller are simultaneously connected with the data processor. The static stretching amount can be obtained by the displacement sensor 13 and the external data collector, the stretching force can be obtained by the hydraulic controller, and then the static stretching deformation characteristic of the measured bolt can be obtained by the data processor.

Claims (3)

1. anchor pole performance testing device, it is characterized in that: proving installation is by anchor-rod positioner (2), lifting twisted wire (3), impact heavily dish (4), positioning guide rail (5), support body (8), fixing foot rest (9), locating bar (10), cushion pad (11), static-force hydraulic stretching device (12) forms, support body (8) lower end is fixedly connected with fixing foot rest (9), the inwall symmetria bilateralis of support body (8) is provided with positioning guide rail (5), impacting pallet (6) is slidably mounted between symmetrical positioning guide rail (5), impact heavily and have the vertical centre through hole on dish (4), impacting heavily, dish (4) upper surface is fixedly connected with lifting twisted wire (3) one ends, anchor-rod positioner (2) is the cylinder hollow shape, the upper end connects the entablature of support body (8), and be fixedly connected on the entablature center of support body (8), the vertical centre through hole that (4) are heavily coiled in impact is passed in the lower end, cushion pad (11) is arranged in support body (8), cushion pad (11) is positioned at bottom support body (8), static-force hydraulic stretching device (12) is seated in above cushion pad (11), static-force hydraulic stretching device (12) symmetria bilateralis has pilot hole, support body (8) is passed in locating bar (10) activity, be inserted in the pilot hole of static-force hydraulic stretching device (12) both sides.

2. a kind of anchor pole performance testing device as claimed in claim 1, it is characterized in that: be provided with read text scale on described positioning guide rail (5), the scale precision is 1mm.

3. a kind of anchor pole performance testing device as claimed in claim 1, is characterized in that: be provided with displacement transducer (13) on described static-force hydraulic stretching device (12).

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