Mining anchor cable pulling resistance detection equipment of multidirectional load applying structure

Abstract

The utility model discloses a mining anchor cable pulling resistance detection device of a multidirectional load applying structure, which comprises a base, an outer ring is fixedly arranged on the upper surface of one end of the base, an inner plate is arranged on the inner side of the outer ring, a receding groove is formed in the outer side surface of the inner plate, a limiting rod is inserted into the outer side surface of the outer ring, and the limiting rod is connected with the outer side surface of the outer ring. A load applying mechanism is arranged on the outer side surface of the outer ring, and the tensile property of the anchorage device can be fully tested by extruding the anchorage device in different directions in turn. According to the mining anchor cable pulling resistance detection equipment of the multidirectional load applying structure, the mode that the gear ring extrudes the stress rod at the designated position in the rotating process is adopted, so that the anchorage device can be extruded by the load in the designated direction, and multidirectional load detection of the anchorage device is achieved; the problem that a large deviation exists between a detection result and an actual condition due to the fact that the stress condition of the anchor cable in actual work cannot be really simulated due to single-direction load application is avoided.

Description

Technical Field

[0001] This utility model relates to the field of anchor cable pull-out force testing technology, specifically to a mining anchor cable pull-out force testing device with a multi-directional load application structure. Background Technology

[0002] In mining engineering, mine anchor cables serve as an important support structure. Their pull-out force is a key indicator for evaluating the effectiveness of anchor cable support and mine safety. Accurately detecting the pull-out force of mine anchor cables is crucial for ensuring safe production and stable operation of mines. Traditional mine anchor cable pull-out force testing equipment has many limitations. Firstly, in terms of load application, traditional testing equipment can usually only apply load in a single direction. However, in actual mining environments, the forces borne by anchor cables are multidirectional. Due to the complexity of mine geological conditions, anchor cables not only bear vertical tensile forces but may also be subjected to horizontal forces and other forces at different angles. The application of load in a single direction cannot accurately simulate the stress situation of anchor cables in actual operation, leading to a significant deviation between the test results and the actual situation. This deviation may cause engineers to make incorrect judgments about the support capacity of anchor cables, thereby affecting the design and implementation of mine support schemes. In past research and practice, people have conducted a lot of research on the pull-out force testing of mine anchor cables. Traditional testing methods and equipment mainly focus on the application of load in a single direction and evaluate the pull-out force of anchor cables through simple tensile tests. However, these methods and equipment cannot fully consider the multi-directional stress situation faced by anchor cables in actual operation.

[0003] Secondly, traditional testing equipment is complex to operate and inefficient. Before testing, it requires tedious equipment installation and debugging, which not only consumes a lot of time and manpower, but may also affect the test results due to improper installation. During the testing process, operators need to constantly adjust equipment parameters and record data. Moreover, due to the low degree of automation of the equipment, many operations need to be completed manually, which further reduces the testing efficiency. In addition, traditional equipment is large in size and inconvenient to transport and move. In some complex mining environments, it is difficult to quickly transport the equipment to the testing site. Utility Model Content

[0004] The purpose of this invention is to provide a mining anchor cable pull-out force testing device with a multi-directional load application structure, so as to solve the problems of single load application direction and cumbersome operation mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mining anchor cable pull-out force testing device with a multi-directional load application structure, comprising a base, an outer ring fixedly provided on the upper surface of one end of the base, an inner plate provided on the inner side of the outer ring, a clearance groove provided on the outer surface of the inner plate, and a limit rod inserted into the outer surface of the outer ring, an anchor provided on one side of the base, and a steel cable fixedly connected to the upper side surface of the base, and a load application mechanism provided on the outer surface of the outer ring, wherein the tensile performance of the anchor can be fully tested by alternately squeezing the anchor in different directions;

[0006] The load application mechanism includes: a toothed ring, which is rotatably mounted on one side of the outer surface of the outer ring, and a pressing block is fixedly provided on the inner surface of the toothed ring; a drive motor is fixedly mounted on the upper side surface of the outer ring, and a drive gear is fixedly connected to one end of the output shaft of the drive motor; a sliding force-bearing rod is installed on the outer surface of the inner plate, and an adjusting rod is installed on the outer surface of the inner plate, and a piston plate is rotatably connected to one end of the adjusting rod located inside the inner plate.

[0007] Preferably, the outer ring and the inner plate are concentrically arranged, and the inner surface of the outer ring and the outer surface of the inner plate are in clearance fit. The limiting rod and the outer ring are in tight-fit sliding connection, and one end of the limiting rod is located inside the relief groove, and the limiting rod and the relief groove are in clearance fit.

[0008] By adopting the above technical solution, the inner plate can withstand loads in different directions to conduct tensile tests.

[0009] Preferably, the gear ring and the drive gear are meshed, the extrusion block is a right-angled trapezoidal design, and the inclined surface of the extrusion block is set towards the force-bearing rod.

[0010] By adopting the above technical solution, the drive gear can drive the extrusion block to perform circumferential motion through meshing with the gear ring.

[0011] Preferably, the adjusting rod is threaded to the inner plate, the force rod and piston plate are slidably frictionally connected to the outer ring, and the end of the force rod facing the inclined surface of the extrusion block is spherically designed.

[0012] By adopting the above technical solution, the force-bearing rod can apply load pressure to the inner plate under the extrusion of the extrusion block.

[0013] Preferably, a data marking mechanism is provided on one side of the inner plate to detect the pull-out resistance of the anchor cable by monitoring the distance of the anchor sliding relative to the steel cable.

[0014] By adopting the above technical solution, the sliding distance of the anchor relative to the steel cable can be recorded.

[0015] Preferably, the data marking mechanism includes: a clamping ring, which is fixedly connected to a steel cable by bolts; a sliding block is installed on the side surface of the inner plate, and a connecting chain is connected between the sliding block and the clamping ring; and a fixing block and an indicator plate are fixedly provided on the outer surface of the inner plate.

[0016] By adopting the above technical solution, the sliding block can record the sliding distance of the anchor relative to the steel cable through the positional change of the relative indicator plate.

[0017] Preferably, one end of the connecting chain passes through the fixed block, a spring connects the sliding block and the fixed block, one end of the sliding block is in contact with the outer surface of the indicator plate, and the outer surface of the indicator plate is uniformly marked with graduations.

[0018] By adopting the above technical solution, the sliding block can maintain the tension of the connecting chain through the spring support between it and the fixed block.

[0019] Compared with the prior art, the beneficial effects of this utility model are: the pull-out force testing device for mining anchor cables with a multi-directional load application structure:

[0020] 1. By using a toothed ring to compress the force-bearing rod at a specified position during rotation, the anchorage can be subjected to load compression in a specified direction, thereby realizing multi-directional load testing of the anchorage. This avoids the problem that the test results may deviate significantly from the actual situation because the load applied in a single direction cannot truly simulate the stress situation of the anchor cable in actual work.

[0021] 2. Furthermore, by adjusting the extension of the force-bearing rod, the different compressive forces on the anchor in different directions can be adjusted, thereby enabling the anchor cable to undergo tensile tests as needed under different conditions, ensuring the accuracy and relevance of the test;

[0022] 3. Furthermore, by installing clamping rings on the steel cable, the relative slippage between the steel cable and the anchor can be monitored by measuring the distance the sliding block slides relative to the indicator plate, thus eliminating the need to separately detect the relative slippage between the steel cable and the anchor after the load is applied. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the connection between the gear ring, drive motor, and drive gear of this utility model;

[0025] Figure 3 This is a schematic diagram of the overall cross-sectional three-dimensional structure of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the clamping ring, sliding block, and connecting chain of this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the connection between the inner plate, adjusting rod, and piston plate of this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of the connection between the toothed ring, the extrusion block, and the force-bearing rod of this utility model.

[0029] In the diagram: 1. Base; 2. Outer ring; 3. Inner plate; 4. Relief groove; 5. Limiting rod; 6. Anchor; 7. Steel cable; 8. Gear ring; 9. Extrusion block; 10. Drive motor; 11. Drive gear; 12. Force rod; 13. Adjusting rod; 14. Piston plate; 15. Clamping ring; 16. Sliding block; 17. Connecting chain; 18. Fixing block; 19. Indicator plate. Detailed Implementation

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Please see Figures 1-6 This utility model provides a technical solution: a mining anchor cable pull-out force testing device with a multi-directional load application structure.

[0032] Example 1

[0033] This embodiment discloses: a base 1, an outer ring 2 fixedly provided on the upper surface of one end of the base 1, an inner plate 3 provided on the inner side of the outer ring 2, a clearance groove 4 opened on the outer surface of the inner plate 3, and a limit rod 5 inserted into the outer surface of the outer ring 2, an anchor 6 provided on one side of the base 1, and a steel cable 7 fixedly connected to the upper side surface of the base 1, and a load application mechanism provided on the outer surface of the outer ring 2. By alternately squeezing the anchor 6 in different directions, the tensile performance of the anchor 6 can be fully tested.

[0034] The load application mechanism includes: a toothed ring 8, which is rotatably mounted on one side of the outer surface of the outer ring 2, and a pressing block 9 is fixedly provided on the inner surface of the toothed ring 8; a drive motor 10 is fixedly mounted on the upper side surface of the outer ring 2, and a drive gear 11 is fixedly connected to one end of the output shaft of the drive motor 10; a sliding force rod 12 is mounted on the outer surface of the inner plate 3, and an adjusting rod 13 is mounted on the outer surface of the inner plate 3, and a piston plate 14 is rotatably connected to one end of the adjusting rod 13 located inside the inner plate 3;

[0035] The outer ring 2 and the inner plate 3 are concentrically arranged, and the inner surface of the outer ring 2 and the outer surface of the inner plate 3 are in clearance fit. The limiting rod 5 and the outer ring 2 are in tight fit sliding connection, and one end of the limiting rod 5 is located inside the relief groove 4, and the limiting rod 5 and the relief groove 4 are in clearance fit.

[0036] The gear ring 8 and the drive gear 11 are meshed together. The extrusion block 9 is designed as a right-angled trapezoid, and the inclined surface of the extrusion block 9 is set towards the force-bearing rod 12.

[0037] The adjusting rod 13 is threaded to the inner plate 3, the force rod 12 and the piston plate 14 are sliding frictionally connected to the outer ring 2, and the end of the force rod 12 facing the inclined surface of the extrusion block 9 is spherical.

[0038] During the pull-out force test, firstly, the limiting rod 5 is pulled out to remove the inner plate 3. Then, the anchor 6 is fixed to the inner plate 3 with bolts. Next, the steel cable 7 at one end of the base 1 is passed through the inner plate 3 and the anchor 6. Then, the inner plate 3 is placed inside the outer ring 2, and the limiting rod 5 is inserted to temporarily fix the inner plate 3 relative to the outer ring 2. Then, the steel cable 7 is fixed and tightened by the anchor 6. At this time, the limiting rod 5 is pulled so that it no longer contacts the bottom surface of the relief groove 4. Then, the drive motor 10 is started. The meshing of the drive gear 11 with the gear ring 8 drives the gear ring 8 to rotate. The gear ring 8 squeezes the force rod 12 through the inclined surface of the extrusion block 9, so that the force rod 12 compresses the air between the piston plate 14 through the sliding friction connection with the inner plate 3, thereby achieving the purpose of applying pressure load to the piston plate 14. At this time, by rotating the adjusting rod 13, the initial position of the piston plate 14 in the inner plate 3 is changed, thereby changing the length of the force rod 12 extending out of the inner plate 3, so as to change the degree of extrusion of the force rod 12 by the extrusion block 9 and thus adjust the load force.

[0039] Example 2

[0040] This embodiment discloses, based on embodiment 1, that a data marking mechanism is provided on one side of the inner plate 3, and the pull-out resistance of the anchor cable is detected by monitoring the distance of the anchor 6 sliding relative to the steel cable 7;

[0041] The data marking mechanism includes: a clamping ring 15, which is fixedly connected to the steel cable 7 by bolts; a sliding block 16 is installed on the side surface of the inner plate 3, and a connecting chain 17 is connected between the sliding block 16 and the clamping ring 15; and a fixing block 18 and an indicator plate 19 are fixedly provided on the outer surface of the inner plate 3.

[0042] One end of the connecting chain 17 passes through the fixed block 18. A spring is connected between the sliding block 16 and the fixed block 18. One end of the sliding block 16 is in contact with the outer surface of the indicator plate 19. The outer surface of the indicator plate 19 is evenly provided with scales.

[0043] When the anchor 6 is installed, the clamping ring 15 is pulled to move the sliding block 16 relative to the indicator plate 19 on the inner plate 3 to a suitable position. Then the steel cable 7 is passed through the clamping ring 15 and fixed with bolts. At this time, the sliding block 16 is kept taut on the connecting chain 17 by the spring between it and the fixed block 18. During the test under load, the difference between the scale position of the sliding block 16 relative to the scale plate 19 and the initial position is observed, thereby realizing the detection of the amount of slippage of the anchor 6 relative to the steel cable 7.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mining anchor cable pull-out force testing device with a multi-directional load application structure, comprising a base (1), an outer ring (2) fixedly disposed on the upper surface of one end of the base (1), and an inner plate (3) disposed on the inner side of the outer ring (2), a clearance groove (4) being formed on the outer surface of the inner plate (3), and a limit rod (5) being inserted into the outer surface of the outer ring (2), characterized in that: An anchor (6) is provided on one side of the base (1), and a steel cable (7) is fixedly connected to the upper side surface of the base (1). A load application mechanism is provided on the outer surface of the outer ring (2). By alternately squeezing the anchor (6) in different directions, the tensile performance of the anchor (6) can be fully tested. The load application mechanism includes: a toothed ring (8), which is rotatably mounted on one side of the outer surface of the outer ring (2), and a pressing block (9) is fixedly provided on the inner surface of the toothed ring (8); a drive motor (10) is fixedly mounted on the upper side surface of the outer ring (2), and a drive gear (11) is fixedly connected to one end of the output shaft of the drive motor (10); a sliding force rod (12) is installed on the outer surface of the inner plate (3), and an adjusting rod (13) is installed on the outer surface of the inner plate (3), and a piston plate (14) is rotatably connected to one end of the adjusting rod (13) located inside the inner plate (3).

2. The mining anchor cable pull-out force testing device with a multi-directional load application structure according to claim 1, characterized in that: The outer ring (2) and the inner plate (3) are concentrically arranged, and the inner surface of the outer ring (2) and the outer surface of the inner plate (3) are in clearance fit. The limiting rod (5) and the outer ring (2) are in tight fit sliding connection, and one end of the limiting rod (5) is located inside the relief groove (4), and the limiting rod (5) and the relief groove (4) are in clearance fit.

3. The mining anchor cable pull-out force testing device with a multi-directional load application structure according to claim 1, characterized in that: The gear ring (8) is meshed with the drive gear (11), and the extrusion block (9) is designed as a right-angled trapezoid, with the inclined surface of the extrusion block (9) facing the force rod (12).

4. The mining anchor cable pull-out force testing device with a multi-directional load application structure according to claim 1, characterized in that: The adjusting rod (13) is threaded to the inner plate (3), the force rod (12) and the piston plate (14) are slidably frictionally connected to the outer ring (2), and the end of the force rod (12) facing the inclined surface of the extrusion block (9) is spherically designed.

5. The mining anchor cable pull-out force testing device with a multi-directional load application structure according to claim 1, characterized in that: A data marking mechanism is provided on one side of the inner plate (3), and the pull-out resistance of the anchor cable is detected by monitoring the distance of the anchor (6) sliding relative to the steel cable (7).

6. The mining anchor cable pull-out force testing device with a multi-directional load application structure according to claim 5, characterized in that: The data marking mechanism includes: a clamping ring (15), which is fixedly connected to a steel cable (7) by bolts; a sliding block (16) is installed on the side surface of the inner plate (3), and a connecting chain (17) is connected between the sliding block (16) and the clamping ring (15); and a fixing block (18) and an indicator plate (19) are fixedly provided on the outer surface of the inner plate (3).

7. The mining anchor cable pull-out force testing device with a multi-directional load application structure according to claim 6, characterized in that: One end of the connecting chain (17) passes through the fixed block (18), a spring is connected between the sliding block (16) and the fixed block (18), and one end of the sliding block (16) is in contact with the outer surface of the indicator plate (19), and the outer surface of the indicator plate (19) is evenly marked with scale.

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