Device for testing anchoring performance of coal rock mass in coal mine tunnel

Abstract

The utility model relates to the technical field of coal mining, in particular to a coal mine tunnel coal-rock mass anchoring performance testing device which comprises a base, a stabilizing frame fixedly connected to the top of the base, a controller fixedly connected to the top of the stabilizing frame, a motor fixedly connected to the top of the stabilizing frame, and a hydraulic cylinder fixedly connected to the top of the motor. The output end of the motor is fixedly connected with a lead screw, the outer side of the lead screw is in threaded connection with a ferrule, the outer side of the ferrule is fixedly connected with a sliding rod, a moving groove is formed in the inner side of the stabilizing frame, the end, away from the sliding rod, of the ferrule is fixedly connected with an L-shaped rod, and the bottom of the L-shaped rod is fixedly connected with a clamping ring; the device is simple in structure and convenient to use, the stress performance of the anchoring rod can be automatically detected, meanwhile, deformation of the anchoring rod can be found in time, workers are reminded, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to a device for testing the anchoring performance of coal and rock bodies in a coal mine tunnel, belonging to the technical field of coal mining. Background Art

[0002] With the continuous improvement and enhancement of prestressed anchor support technology, the continuous development and perfection of anchoring theory, and the development and research of new high-strength and ultra-high-strength anchor materials, prestressed anchors have been widely used in underground projects in many fields such as water conservancy, mining, transportation, and construction. Geomechanical evaluation should be carried out before designing anchor support for coal mine tunnels. The contents of geomechanical evaluation of coal tunnel surrounding rock include on-site geological conditions and production conditions investigation, determination of physical and mechanical properties of coal tunnel surrounding rock, surrounding rock structure observation, ground stress test and anchor pull-out force test.

[0003] An existing coal mine tunnel coal rock anchoring performance testing device still has some problems during use. When testing the performance of the anchor rod, manual cooperation with the equipment is required to squeeze the anchor rod and detect the force borne by the anchor rod. At this time, the detection method is relatively inefficient. At the same time, when the anchor rod is deformed, the staff cannot discover it in time, thereby missing the force data during deformation, resulting in reduced detection accuracy. Utility Model Content

[0004] The purpose of the utility model is to provide a coal mine tunnel coal rock anchoring performance testing device. The utility model has a simple structure and is easy to use. It can automatically detect and process the stress performance of the anchor rod. At the same time, when the anchor rod is deformed, it can be discovered in time, thereby reminding the staff to improve the accuracy of the detection and solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for testing the anchoring performance of coal and rock in a coal mine tunnel comprises a base, a stabilizing frame is fixedly connected to the top of the stabilizing frame, a controller is fixedly connected to the top of the stabilizing frame, a motor is fixedly connected to the top of the stabilizing frame, a screw rod is fixedly connected to the output end of the motor, a ferrule is threadedly connected to the outer side of the screw rod, a sliding rod is fixedly connected to the outer side of the ferrule, a movable groove is provided on the inner side of the stabilizing frame, an L-shaped rod is fixedly connected to the end of the ferrule away from the sliding rod, a clamping ring is fixedly connected to the bottom of the L-shaped rod, an anchoring rod is installed inside the clamping ring, a threaded pipe is fixedly connected to the outer side of the clamping ring, a screw is threadedly connected to the inner side of the threaded pipe, a gravity detector is fixedly connected to the top of the base, and a support plate is fixedly connected to the top of the gravity detector.

[0007] Furthermore, a fixing rod is fixedly connected to the inner side of the stabilizing frame, a power box is fixedly connected to the outer side of the fixing rod, an elastic switch is fixedly connected to the outer side of the power box, a force plate is fixedly connected to the outer side of the elastic switch, and an alarm light is fixedly connected to the outer side of the power box.

[0008] Furthermore, the controller is electrically connected to the motor, and the screw rod is rotatably connected to the inside of the stabilizing frame.

[0009] Furthermore, one end of the sliding rod away from the ferrule is slidably connected to the inside of the movable groove, and one end of the screw rod is located inside the clamping ring.

[0010] Furthermore, the anchor rod is located directly above the support plate, and a display is fixedly connected to the outer side of the gravity detector.

[0011] Furthermore, the power supply box is symmetrically distributed on the inner side of the stabilizing frame through a fixing rod, and the power supply box is electrically connected to the alarm light.

[0012] Furthermore, the stress-bearing plate is installed on the outside of the power box through an elastic switch, and the stress-bearing plate is symmetrically distributed on the outside of the anchor rod.

[0013] The beneficial effects of the utility model are:

[0014] (a) The utility model is provided with a base, and a stabilizing frame is fixedly connected to the top of the base. First, the anchor rod is installed inside the clamping ring. At this time, the screw rod is rotated and moved inside the threaded tube by rotating the screw rod, so that the anchor rod is fixedly connected to the inside of the clamping ring, and the anchor rod is located directly above the support plate. The motor is started by the controller, so that the motor drives the screw rod to rotate, and the ring is driven to rotate by the rotation of the screw rod. Since a sliding rod is fixedly connected to the outside of the ring, and the sliding rod is slidably connected to the inside of the moving groove, when the screw rod rotates, it can drive the ring to move downward on the outside of the screw rod. At this time, the ring will drive the L-shaped rod to move, so that the anchor rod moves downward, and the support plate on the top of the gravity detector is squeezed, and the pressure value generated by the squeezing will be displayed on the display outside the gravity detector, thereby achieving the effect of automatic testing.

[0015] (ii) The utility model is provided with a base, and a stabilizing frame is fixedly connected to the top of the base. When the anchor rod is bent, it indicates that the pressure bearing capacity of the anchor rod has reached the limit. At this time, the anchor rod will contact the load-bearing plate, and the elastic switch will be squeezed through the load-bearing plate, so that the power supply box is energized. Since the power supply box is electrically connected to the alarm light on the outside, the alarm light can be turned on to remind the staff. At this time, the data displayed by the gravity detector is recorded, thereby achieving the effect of improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 It is a structural schematic diagram of a device for testing the anchoring performance of coal and rock mass in a coal mine tunnel according to the utility model;

[0018] Figure 2 It is a structural schematic diagram of a screw rod of a coal mine tunnel coal rock anchoring performance testing device of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the outer side of a power box of a coal mine tunnel coal rock anchoring performance testing device of the utility model;

[0020] Figure 4 The utility model is a coal mine tunnel coal rock anchoring performance testing device Figure 2 A magnified view of the structure at center A;

[0021] Numbers in the figure: 1. Base; 2. Stabilizing frame; 3. Controller; 4. Motor; 5. Screw; 6. Ring; 7. Sliding rod; 8. Moving groove; 9. L-shaped rod; 10. Clamping ring; 11. Anchor rod; 12. Threaded pipe; 13. Screw; 14. Gravity detector; 15. Support plate; 16. Fixed rod; 17. Power box; 18. Elastic switch; 19. Force plate; 20. Alarm light. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1 Please refer to Figure 1-Figure 4 , the utility model provides a technical solution:

[0024] A device for testing the anchoring performance of coal and rock masses in a coal mine tunnel comprises a base 1, a stabilizing frame 2 is fixedly connected to the top of the base 1, a controller 3 is fixedly connected to the top of the stabilizing frame 2, a motor 4 is fixedly connected to the top of the stabilizing frame 2, a screw rod 5 is fixedly connected to the output end of the motor 4, a ferrule 6 is threadedly connected to the outer side of the screw rod 5, a sliding rod 7 is fixedly connected to the outer side of the ferrule 6, a moving groove 8 is provided on the inner side of the stabilizing frame 2, an L-shaped rod 9 is fixedly connected to the end of the ferrule 6 away from the sliding rod 7, a clamping ring 10 is fixedly connected to the bottom of the L-shaped rod 9, an anchoring rod 11 is installed inside the clamping ring 10, a threaded pipe 12 is fixedly connected to the outer side of the clamping ring 10, a screw 13 is threadedly connected to the inner side of the threaded pipe 12, a gravity detector 14 is fixedly connected to the top of the base 1, and a support plate 15 is fixedly connected to the top of the gravity detector 14.

[0025] Specifically, Figure 1 As shown, the controller 3 is electrically connected to the motor 4, the screw rod 5 is rotatably connected to the inside of the stabilizing frame 2, the end of the sliding rod 7 away from the ring 6 is slidably connected to the inside of the movable groove 8, one end of the screw rod 13 is located inside the clamping ring 10, the anchor rod 11 is located directly above the support plate 15, and the outer side of the gravity detector 14 is fixedly connected to a display.

[0026] In this embodiment: a base 1 is provided, and a stabilizing frame 2 is fixedly connected to the top of the base 1. First, the anchor rod 11 is installed inside the clamping ring 10. At this time, the screw rod 13 is rotated and moved inside the threaded tube 12, so that the anchor rod 11 is fixedly connected to the inside of the clamping ring 10, and the anchor rod 11 is located directly above the support plate 15. The motor 4 is started by the controller 3, so that the motor 4 drives the screw rod 5 to rotate, and the rotation of the screw rod 5 drives the ring 6 to rotate. Since a sliding rod 7 is fixedly connected to the outside of the ring 6, and the sliding rod 7 is slidably connected to the inside of the moving groove 8, when the screw rod 5 rotates, it can drive the ring 6 to move downward on the outside of the screw rod 5. At this time, the ring 6 will drive the L-shaped rod 9 to move, so that the anchor rod 11 moves downward, and the support plate 15 on the top of the gravity detector 14 is squeezed, and the pressure value generated by the squeezing will be displayed on the display outside the gravity detector 14, thereby achieving the effect of automatic testing.

[0027] Example 2 Please refer to Figure 1 , Figure 2 and Figure 4 The difference between this embodiment and embodiment 1 is that a fixing rod 16 is fixedly connected to the inner side of the stabilizing frame 2, a power supply box 17 is fixedly connected to the outer side of the fixing rod 16, an elastic switch 18 is fixedly connected to the outer side of the power supply box 17, a force-bearing plate 19 is fixedly connected to the outer side of the elastic switch 18, and an alarm light 20 is fixedly connected to the outer side of the power supply box 17.

[0028] Specifically, Figure 1-4 As shown, the power box 17 is symmetrically distributed on the inner side of the stabilizing frame 2 through the fixing rod 16, and the power box 17 is electrically connected to the alarm light 20. The force plate 19 is installed on the outer side of the power box 17 through the elastic switch 18, and the force plate 19 is symmetrically distributed on the outer side of the anchor rod 11.

[0029] In this embodiment: a base 1 is provided, and a stabilizing frame 2 is fixedly connected to the top of the base 1. When the anchor rod 11 bends, it means that the pressure bearing capacity of the anchor rod 11 has reached its limit. At this time, the anchor rod 11 will contact the force-bearing plate 19, and the elastic switch 18 will be squeezed through the force-bearing plate 19, so that the power box 17 is energized. Since the power box 17 is electrically connected to the alarm light 20 on the outside, the alarm light 20 can be turned on, thereby reminding the staff. At this time, the data displayed by the gravity detector 14 is recorded, thereby achieving the effect of improving the detection accuracy.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal mine tunnel coal rock anchoring performance testing device, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a stabilizing frame (2), the top of the stabilizing frame (2) is fixedly connected to a controller (3), the top of the stabilizing frame (2) is fixedly connected to a motor (4), the output end of the motor (4) is fixedly connected to a screw rod (5), the outer side of the screw rod (5) is threadedly connected to a ferrule (6), the outer side of the ferrule (6) is fixedly connected to a sliding rod (7), the inner side of the stabilizing frame (2) is provided with a moving groove (8), the ferrule (6) is away from the sliding rod One end of the base (7) is fixedly connected to an L-shaped rod (9), the bottom of the L-shaped rod (9) is fixedly connected to a clamping ring (10), an anchor rod (11) is installed inside the clamping ring (10), the outer side of the clamping ring (10) is fixedly connected to a threaded tube (12), the inner part of the threaded tube (12) is threadedly connected to a screw rod (13), the top of the base (1) is fixedly connected to a gravity detector (14), and the top of the gravity detector (14) is fixedly connected to a support plate (15).

2. A coal mine tunnel coal rock anchoring performance testing device according to claim 1, characterized in that: A fixing rod (16) is fixedly connected to the inner side of the stabilizing frame (2), a power supply box (17) is fixedly connected to the outer side of the fixing rod (16), an elastic switch (18) is fixedly connected to the outer side of the power supply box (17), a force-bearing plate (19) is fixedly connected to the outer side of the elastic switch (18), and an alarm light (20) is fixedly connected to the outer side of the power supply box (17).

3. A coal mine tunnel coal rock anchoring performance testing device according to claim 1, characterized in that: The controller (3) is electrically connected to the motor (4), and the screw rod (5) is rotatably connected to the inside of the stabilizing frame (2).

4. A coal mine tunnel coal rock anchoring performance testing device according to claim 1, characterized in that: One end of the sliding rod (7) away from the ferrule (6) is slidably connected to the inside of the moving groove (8), and one end of the screw rod (13) is located inside the clamping ring (10).

5. The coal mine tunnel coal rock anchoring performance testing device according to claim 1, characterized in that: The anchor rod (11) is located directly above the support plate (15), and a display is fixedly connected to the outer side of the gravity detector (14).

6. A coal mine tunnel coal rock anchoring performance testing device according to claim 2, characterized in that: The power supply box (17) is symmetrically distributed on the inner side of the stabilizing frame (2) via a fixing rod (16), and the power supply box (17) is electrically connected to the alarm light (20).

7. A coal mine tunnel coal rock anchoring performance testing device according to claim 2, characterized in that: The force-bearing plate (19) is installed on the outside of the power supply box (17) via an elastic switch (18), and the force-bearing plate (19) is symmetrically distributed on the outside of the anchor rod (11).

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