An anchor bolt pull-out bearing capacity testing device

Abstract

This utility model discloses an anchor bolt pull-out bearing capacity testing device, including a connecting plate interlocked with the anchor bolt and several hydraulic telescopic rods. A lower pad is provided on the upper surface of the connecting plate, a pressure sensor is provided on the upper surface of the lower pad, an upper pad is provided on top of the pressure sensor, an upper ring is provided on the upper surface of the upper pad, and a lower ring is provided on the lower surface of the connecting plate. This utility model relates to the field of anchor bolt pull-out bearing capacity testing technology. After the upper and lower rings are engaged with the surface of the anchor bolt, the hydraulic telescopic rods can extend, and the pull-out bearing capacity of the anchor bolt can be detected using pressure and displacement sensors. Before testing, the power oil pipes of the multiple hydraulic telescopic rods can pass through the two openings on the corresponding fixing blocks to organize the multiple oil pipes, preventing them from intertwining and facilitating the subsequent disassembly and assembly of the device.

Description

Technical Field

[0001] This utility model relates to the field of anchor pull-out testing technology, specifically to an anchor pull-out bearing capacity testing device. Background Technology

[0002] Rock bolts are the most basic component of roadway support in modern coal mines. They reinforce the surrounding rock of the roadway, allowing the surrounding rock to support itself. Now, rock bolts are not only used in mines, but also in engineering technology for the main reinforcement of slopes, tunnels, and dams.

[0003] Chinese patent CN215812103U discloses an anchor pull-out bearing capacity testing device. This technical solution, by providing an extension column for adjusting the height of the fixed seat, can meet the testing requirements of anchors on slopes. The clamping bolt passes through the fixed seat and is threadedly connected to the bolt hole. By installing and removing the clamping bolt, it is convenient to adjust the length of the extension column extending out of the fixed seat. It is easy to operate and highly practical.

[0004] The anchor pull-out bearing capacity testing device uses several hydraulic cylinders to conduct pull-out bearing capacity tests. However, the device does not have the function of fixing the oil pipes during use, which causes the oil pipes to become tangled and intertwined, making it difficult to disassemble and reassemble later. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an anchor bolt pull-out bearing capacity testing device, which solves the problem that the existing anchor bolt pull-out bearing capacity testing device does not have the function of fixing and managing the oil pipe during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anchor bolt pull-out bearing capacity testing device, comprising a connecting plate and several hydraulic telescopic rods that are interlocked with the anchor bolt. A lower pad is provided on the upper surface of the connecting plate, a pressure sensor is provided on the upper surface of the lower pad, an upper pad is provided on the top of the pressure sensor, an upper ring is provided on the upper surface of the upper pad, and a lower ring is provided on the lower surface of the connecting plate. Both the lower ring and the upper ring are engaged with the anchor bolt.

[0007] Multiple hydraulic telescopic rods are located below the connecting plate. A first connecting plate is fixedly connected to the top of each hydraulic telescopic rod. The first connecting plate is detachably connected to the lower surface of the connecting plate by several bolts. Several fixing blocks are fixedly connected to the side wall of the connecting plate. Two through holes are opened on each fixing block. A locking structure for fixing the oil pipe is provided inside the through hole.

[0008] Furthermore, a second oil pipe interface is provided at the top of the side wall of the hydraulic telescopic rod, and a first oil pipe interface is provided at the bottom of the side wall of the hydraulic telescopic rod.

[0009] Furthermore, the bottom end of the hydraulic telescopic rod is provided with a telescopic hinge foot, and the bottom of the hinge foot is provided with anti-slip texture.

[0010] Furthermore, it also includes several vertical rods, all of which are detachably installed below the connecting plate, and a displacement sensor is fixedly connected to the bottom end of each vertical rod.

[0011] Furthermore, a second connecting plate is fixedly connected to the top of the vertical rod, and the second connecting plate is fixedly connected to the lower surface of the connecting plate by a number of bolts.

[0012] Furthermore, the locking structure includes a threaded rod disposed on the outer side of the fixing block, the inner end of the threaded rod rotatably extending into the interior of the fixing block and rotatably connected to an abutment block, and the outer end of the threaded rod being fixedly connected to a torsion handle.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: after the upper and lower ring clamps are engaged with the surface of the anchor rod, the hydraulic telescopic rod can be extended. The pull-out bearing capacity of the anchor rod can be detected by using pressure and displacement sensors. Before the test, the power oil pipes of multiple hydraulic telescopic rods can pass through the two through holes on the corresponding fixing blocks to organize the multiple oil pipes and avoid them from intertwining. This facilitates the disassembly and assembly of the device later. In addition, the locking structure can fix the oil pipes passing through the through holes, improving the stability of the oil pipes during use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of the vertical rod and the displacement sensor in this utility model;

[0016] Figure 3 This is a front structural diagram of the present invention.

[0017] In the diagram: 1. Connecting plate; 2. Lower pad; 3. Pressure sensor; 4. Upper pad; 5. Upper ring clamp; 6. Lower ring clamp; 7. Hydraulic telescopic rod; 8. First connecting plate; 9. Vertical rod; 10. Displacement sensor; 11. Second connecting plate; 12. Fixing block; 13. Threaded rod; 14. Abutment block; 15. Through port; 16. Hinge foot; 17. First oil pipe interface; 18. Second oil pipe interface; 19. Torque handle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 This utility model provides a technical solution: an anchor bolt pull-out bearing capacity testing device, including a connecting plate 1 and several hydraulic telescopic rods 7 that are interlocked with the anchor bolt. A lower pad 2 is provided on the upper surface of the connecting plate 1, a pressure sensor 3 is provided on the upper surface of the lower pad 2, an upper pad 4 is provided on the top of the pressure sensor 3, an upper ring 5 is provided on the upper surface of the upper pad 4, and a lower ring 6 is provided on the lower surface of the connecting plate 1. Both the lower ring 6 and the upper ring 5 are engaged with the anchor bolt.

[0020] Multiple hydraulic telescopic rods 7 are located below the connecting plate 1. The top of the hydraulic telescopic rod 7 is fixedly connected to a first connecting plate 8. The first connecting plate 8 is detachably connected to the lower surface of the connecting plate 1 by several bolts.

[0021] The side wall of the connecting plate 1 is fixedly connected with several fixing blocks 12. Two through holes 15 are opened on the fixing blocks 12. The inside of the through holes 15 is provided with a locking structure for fixing the oil pipe.

[0022] It also includes several vertical rods 9, all of which are detached and installed below the connecting plate 1. A displacement sensor 10 is fixedly connected to the bottom end of each vertical rod 9.

[0023] The top of the vertical rod 9 is fixedly connected to a second connecting plate 11, which is fixedly connected to the lower surface of the connecting plate 1 by several bolts.

[0024] After the upper ring 5 and lower ring 6 are engaged with the surface of the anchor rod, the hydraulic telescopic rod 7 can be extended, and the pull-out bearing capacity of the anchor rod can be detected by using the pressure sensor 3 and the displacement sensor 10.

[0025] Before testing, the power oil pipes of multiple hydraulic telescopic rods 7 can pass through the two openings 15 on the corresponding fixing blocks 12 to organize the multiple oil pipes, avoid the multiple oil pipes from intertwining and tangling, facilitate the disassembly and assembly of the device later, and the locking structure can fix the oil pipes passing through the openings 15, improving the stability of the oil pipes during use.

[0026] The top of the side wall of the hydraulic telescopic rod 7 is provided with a second oil pipe interface 18, and the bottom of the side wall of the hydraulic telescopic rod 7 is provided with a first oil pipe interface 17. The first oil pipe interface 17 and the second oil pipe interface 18 can be connected to an external power oil pipe to provide the power required for the hydraulic telescopic rod 7 during operation.

[0027] The bottom end of the hydraulic telescopic rod 7 is provided with a telescopic hinge foot 16. The bottom of the hinge foot 16 is provided with anti-slip texture. The hinge foot 16 is existing technology and will not be described in detail here.

[0028] The locking structure includes a threaded rod 13, which is disposed on the outer side of the fixing block 12. The inner end of the threaded rod 13 extends rotatably into the interior of the fixing block 12 and is rotatably connected to an abutment block 14. The outer end of the threaded rod 13 is fixedly connected to a torsion handle 19.

[0029] After the oil pipe passes through the inside of the port 15, the torsion handle 19 is turned, which drives the threaded rod 13 to rotate. This causes the contact block 14 to move inside the port 15. The oil pipe is clamped and fixed by the contact block 14 coming into contact with the surface of the oil pipe.

[0030] During operation, after the upper ring 5 and lower ring 6 are engaged with the surface of the anchor rod, the hydraulic telescopic rod 7 can be extended. The pull-out bearing capacity of the anchor rod can be detected by the pressure sensor 3 and the displacement sensor 10. Before the test, the power oil pipes of multiple hydraulic telescopic rods 7 can pass through the two openings 15 on the corresponding fixing block 12 to organize the multiple oil pipes. The locking structure can fix the oil pipes passing through the openings 15.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for testing the pull-out bearing capacity of an anchor bolt, comprising a connecting plate (1) interlocked with the anchor bolt and a plurality of hydraulic telescopic rods (7), characterized in that: The upper surface of the connecting plate (1) is provided with a lower pad plate (2), the upper surface of the lower pad plate (2) is provided with a pressure sensor (3), the top of the pressure sensor (3) is provided with an upper pad plate (4), the upper surface of the upper pad plate (4) is provided with an upper ring clamp (5), the lower surface of the connecting plate (1) is provided with a lower ring clamp (6), and both the lower ring clamp (6) and the upper ring clamp (5) are engaged with the anchor rod; Multiple hydraulic telescopic rods (7) are located below the connecting plate (1). The top of each hydraulic telescopic rod (7) is fixedly connected to a first connecting plate (8). The first connecting plate (8) is detachably connected to the lower surface of the connecting plate (1) by several bolts. Several fixing blocks (12) are fixedly connected to the side wall of the connecting plate (1). Two through holes (15) are opened on the fixing blocks (12). The inside of the through holes (15) is provided with a locking structure for fixing the oil pipe.

2. The anchor bolt pull-out bearing capacity testing device according to claim 1, characterized in that: The top of the side wall of the hydraulic telescopic rod (7) is provided with a second oil pipe interface (18), and the bottom of the side wall of the hydraulic telescopic rod (7) is provided with a first oil pipe interface (17).

3. The anchor bolt pull-out bearing capacity testing device according to claim 1, characterized in that: The bottom end of the hydraulic telescopic rod (7) is provided with a telescopic hinge foot (16), and the bottom of the hinge foot (16) is provided with anti-slip texture.

4. The anchor bolt pull-out bearing capacity testing device according to claim 1, characterized in that: It also includes several vertical rods (9), and the multiple vertical rods (9) are detached and installed below the connecting plate (1). The bottom end of each vertical rod (9) is fixedly connected to a displacement sensor (10).

5. The anchor bolt pull-out bearing capacity testing device according to claim 4, characterized in that: The top of the vertical rod (9) is fixedly connected to a second connecting plate (11), which is fixedly connected to the lower surface of the connecting plate (1) by a number of bolts.

6. The anchor bolt pull-out bearing capacity testing device according to claim 1, characterized in that: The locking structure includes a threaded rod (13), which is disposed on the outer side of the fixing block (12). The inner end of the threaded rod (13) extends rotatably into the interior of the fixing block (12) and is rotatably connected to an abutment block (14). The outer end of the threaded rod (13) is fixedly connected to a torsion handle (19).

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