Anchoring device

Abstract

The utility model discloses an anchor rod drawing device, including mobile bottom plate and hollow jack, the upper surface of mobile bottom plate is fixedly installed with hydraulic oil tank and hydraulic oil pump respectively, the outer surface fixed connection of hollow jack has two limit sliding seat, the inner wall of two limit sliding seat all is connected with the sliding support of sliding, and the side of two sliding support all is fixedly connected with the support plate, and the side of two support plates away from each other all is fixedly installed with miniature hydraulic pressure pole. The utility model discloses through the double fixed mode of hydraulic drive and manual auxiliary locking, through the rotation hexagonal rotary seat drive screw drive rod and push the supplementary locking clamping plate clamping, replaced the traditional knock locking mode, not only operation is more convenient and saves the strength, more effectively avoided the damage of anchor rod screw, pole body and clamp in the knock process, guarantees the test accuracy and anchor rod follow -up use safety, is applicable to the fast detection demand of on -the -spot diversification anchor rod.

Description

Technical Field

[0001] This application relates to the field of anchor bolt technology, and more particularly to an anchor bolt pull-out device. Background Technology

[0002] Anchor bolts are widely used support components in geotechnical engineering. They typically consist of a metal rod, an anchor head, and an anchoring agent. After being drilled into the soil or rock mass, the anchoring agent, through its bonding with the borehole wall or mechanical locking effect, transfers the tensile force within the soil or rock mass to the stable rock layer. This achieves the purpose of reinforcing slopes, tunnel surrounding rock, or foundation pit walls, effectively inhibiting soil or rock deformation and preventing collapse. They are key components for ensuring the safety of engineering structures. The quality of anchor bolt construction directly determines the support effect. Pull-out force is a core performance indicator and must be tested using specialized equipment to ensure it meets design requirements. Therefore, pull-out force testing is a mandatory inspection step after anchor bolt construction.

[0003] Anchor bolt pull-out testing mainly relies on anchor bolt pull-out instruments, but their anchor clamps have shortcomings. Since anchor bolt diameters in engineering projects range from 16mm to 32mm and thread types vary, such as ordinary threads and trapezoidal threads, the existing clamps have a narrow range of compatibility. For anchor bolts with different parameters, the corresponding clamps need to be changed frequently, which is quite cumbersome. At the same time, when connecting the clamps to the anchor bolts, they need to be tapped to achieve a tight fit and lock, which can easily damage the anchor bolt threads or the clamps. After the test, the clamps and anchor bolts are tightly fitted together due to the force, making it difficult to disassemble quickly and reducing testing efficiency. Utility Model Content

[0004] The technical problem this invention aims to solve is to provide an anchor pull-out device that is less likely to damage the anchor bolt and can be quickly disassembled, thereby improving testing efficiency.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution: An anchor bolt pulling device includes a movable base plate and a hollow jack. A hydraulic oil tank and a hydraulic oil pump are fixedly installed on the upper surface of the movable base plate. Two limiting slides are fixedly connected to the outer surface of the hollow jack. Sliding support plates are slidably connected to the inner walls of the two limiting slides. Support plates are fixedly connected to one side of each of the two sliding support plates. Miniature hydraulic rods are fixedly installed on the opposite sides of the two support plates. Arc-shaped locking plates are fixedly installed at the telescopic ends of the two miniature hydraulic rods. Connecting blocks are fixedly connected to the outer surfaces of the two sets of support plates. Two support side plates are fixedly connected to the opposite sides of the two sets of connecting blocks. A manual drive component is provided on one side of each of the two support side plates. An auxiliary locking clamp is provided on one side of each of the two manual drive components.

[0006] The output end of the hydraulic pump is fixedly connected to an oil supply pipe. One end of the oil supply pipe is connected to the oil injection end of the hollow jack and the oil injection end of the miniature hydraulic rod through an oil supply hose. The hydraulic pump drives the miniature hydraulic rod to clamp the anchor rod and drives the hollow jack to apply axial load to the clamped anchor rod.

[0007] Preferably, the manual drive component includes a threaded hole on one side of a support side plate, a threaded drive rod connected to the inner wall of the threaded hole, and a hexagonal rotating seat fixedly connected to one end of the threaded drive rod.

[0008] Preferably, a bearing ring is fixedly embedded on one side of the auxiliary locking clamp, and the outer surface of one end of the threaded drive rod is fixedly connected to the inner ring of the bearing ring. Two support slide cylinders are fixedly embedded on one side of the support side plate, and support slide rods are slidably connected to the inner rings of the two support slide cylinders. One end of each of the two support slide rods is fixedly connected to one side of the auxiliary locking clamp.

[0009] Preferably, each of the two sliding support plates has a limiting slide hole on one side, and the inner walls of the two limiting slide holes are slidably connected to a limiting slide plate. One side of each of the two limiting slide plates is fixedly connected to one side of each of the two arc-shaped locking plates. One end of each of the two sliding support plates is fixedly connected to a limiting plate, and the limiting plate is located on one side of the limiting slide block.

[0010] A digital pressure gauge is fixedly connected to the outer surface of the oil pipeline, and a connecting pipe is fixedly connected to one side of the hydraulic oil tank. One end of the connecting pipe is fixedly connected to the input end of the hollow jack.

[0011] Preferably, multiple arc-shaped silicone strips are fixedly connected to one side of each of the two arc-shaped locking plates that are close to each other, and anti-slip stripes are provided on the outer surface of the arc-shaped silicone strips. An annular disc is fixedly connected to one end of the hollow jack.

[0012] The above-described technical solutions adopted in the embodiments of this application can achieve the following beneficial effects: I. This anchor bolt pulling device uses a miniature hydraulic rod to drive the movement of an arc-shaped locking plate. Utilizing the characteristics of the arc structure and the elastic fit of the arc-shaped silicone strip, stable clamping can be achieved without replacing any clamps, reducing equipment storage costs and clamp replacement time. The device employs a dual fixing method of hydraulic drive and manual assisted locking. Rotating the hexagonal rotating seat drives the threaded drive rod to push the auxiliary locking plate to clamp, replacing the traditional hammering locking method. This not only makes operation more convenient and labor-saving but also effectively avoids damage to the anchor bolt threads, body, and clamps during hammering, ensuring testing accuracy and the safety of subsequent anchor bolt use. It is suitable for the rapid testing needs of diverse anchor bolts in the field, solving the problem of frequent clamp replacements required by traditional devices.

[0013] Second, this anchor bolt pulling device, by controlling the contraction of the micro hydraulic rod, can drive the arc-shaped locking plate to automatically reset, and the auxiliary locking clamp can be quickly released by rotating the hexagonal rotating seat in the opposite direction. This solves the problem that traditional clamps are difficult to disassemble due to tight fit under force, reduces the intensity of manual labor, and improves the flexibility of on-site testing. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 See: A three-dimensional structural diagram of the anchor bolt pull-out device of this utility model from the front view; Figure 2 See: A three-dimensional structural diagram of the hollow jack in the anchor bolt pulling device of this utility model from a side view. Figure 3 See: A three-dimensional structural diagram of the support plate in the anchor bolt pull-out device of this utility model from a side view; Figure 4 See: A top sectional view of the support side plate in the anchor bolt pull-out device of this utility model; Figure 5 See below for a three-dimensional structural diagram of the arc-shaped locking plate in the anchor bolt pulling device of this utility model.

[0015] In the diagram: 1. Movable base plate; 2. Hydraulic oil tank; 3. Hydraulic oil pump; 4. Oil supply pipe; 5. Digital pressure gauge; 6. Hollow jack; 7. Support side plate; 8. Manual drive component; 81. Threaded hole; 82. Threaded drive rod; 83. Bearing ring; 84. Hexagonal rotating seat; 85. Support slide rod; 86. Support slide cylinder; 9. Support plate; 10. Sliding support plate; 11. Limiting slide seat; 12. Annular disc; 13. Limiting plate; 14. Miniature hydraulic rod; 15. Connecting block; 16. Arc-shaped locking plate; 17. Arc-shaped silicone strip; 18. Limiting sliding plate; 19. Limiting sliding hole; 20. Auxiliary locking clamp; 21. Connecting pipe. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0018] Please see Figure 1-5 This utility model provides a technical solution for an anchor bolt pull-out device: An anchor bolt pulling device includes a movable base plate 1 and a hollow jack 6. A hydraulic oil tank 2 and a hydraulic oil pump 3 are fixedly installed on the upper surface of the movable base plate 1. Two limiting slides 11 are fixedly connected to the outer surface of the hollow jack 6. Sliding support plates 10 are slidably connected to the inner walls of the two limiting slides 11. Support plates 9 are fixedly connected to one side of each of the two sliding support plates 10. Miniature hydraulic rods 14 are fixedly installed on the opposite sides of the two support plates 9. Arc-shaped locking plates 16 are fixedly installed at the telescopic ends of the two miniature hydraulic rods 14. Connecting blocks 15 are fixedly connected to the outer surfaces of the two sets of support plates 9. The opposite sides of the two sets of connecting blocks 15 are jointly fixed. The device is connected to two supporting side plates 7. Each of the two supporting side plates 7 has a manual drive component 8 on one side, and each of the two manual drive components 8 has an auxiliary locking clamp 20 on one side. Specifically, the movable base plate 1 provides stable support and flexible movement for the entire device, facilitating rapid transfer to different anchor bolt locations and adapting to diverse on-site testing scenarios. The hydraulic oil tank 2 stores hydraulic oil, providing a power source for the hydraulic system. The hydraulic oil pump 3 pressurizes the hydraulic oil and delivers it to each actuator to achieve power transmission. The hollow jack 6 is a key component for generating pulling force. The hollow jack 6 has a hollow structure suitable for anchor bolt insertion and is externally connected to the limiting slide 11, the annular disc 12, and the hydraulic oil pump 3. After the hydraulic oil in the hydraulic tank 2 is pressurized, it is sent to the hollow jack 6 through the oil supply pipe 4. The hydraulic oil drives the internal piston to move. The piston drives the clamping assembly arc-shaped locking plate 16 and other components to stretch the anchor rod outward, generating a pull-out force. The annular disc 12 improves the stability of the force and meets the force value requirements of the anchor rod pull-out test. The limiting slide 11 cooperates with the sliding support plate 10 to provide guidance and limit for the pull-out process, ensuring that the pull-out action is smooth and accurate and avoiding deviation from affecting the test accuracy. This device is particularly suitable for civil engineering, mining support, slope stabilization and other scenarios. It is used to test the pull-out force of anchor rods that have been implanted in concrete, rock or soil. They are usually made of threaded steel. In the specific test, one end of the anchor rod is first anchored, and then the other end of the anchor rod is sleeved in the hollow structure of the hollow jack 6, which provides convenient conditions for centering the pull-out test.

[0019] In this embodiment, the manual drive component 8 includes a threaded hole 81 on one side of the support side plate 7. A threaded drive rod 82 is threadedly connected to the inner wall of the threaded hole 81. One end of the threaded drive rod 82 is fixedly connected to a hexagonal rotating seat 84. A bearing ring 83 is fixedly embedded on one side of the auxiliary locking clamp plate 20. The outer surface of one end of the threaded drive rod 82 is fixedly connected to the inner ring of the bearing ring 83. Two support slide cylinders 86 are fixedly embedded on one side of the support side plate 7. Support slide rods 85 are slidably connected to the inner rings of the two support slide cylinders 86. One end of each support slide rod 85 is connected to one end of the auxiliary locking clamp plate 20. The side is fixedly connected; specifically, by rotating the hexagonal rotating seat 84, the threaded drive rod 82 is driven to rotate along the threaded hole 81, and the auxiliary locking clamp 20 is moved by the threaded transmission. It can cooperate with the arc-shaped locking plate 16 to form a double clamping, which improves the locking reliability. The bearing ring 83 ensures that the threaded drive rod 82 does not drive the auxiliary locking clamp 20 to rotate synchronously when it rotates, ensuring that the clamping action is smooth. The support slide 86 cooperates with the support slide rod 85 to provide guidance for the movement of the auxiliary locking clamp 20, avoid deviation, and ensure clamping accuracy. The overall structure realizes the combination of hydraulic automatic clamping and manual auxiliary locking.

[0020] In this embodiment, each of the two sliding support plates 10 has a limiting sliding hole 19 on one side. The inner walls of the two limiting sliding holes 19 are slidably connected to limiting sliding plates 18. One side of each limiting sliding plate 18 is fixedly connected to one side of each of the two arc-shaped locking plates 16. One end of each of the two sliding support plates 10 is fixedly connected to a limiting plate 13, which is located on one side of the limiting slide block 11. The output end of the hydraulic oil pump 3 is fixedly connected to an oil supply pipe 4. One end of the oil supply pipe 4 is connected to the oil injection end of the hollow jack 6 and the oil injection end of the miniature hydraulic rod 14 via an oil supply hose. A digital pressure gauge 5 is fixedly connected to the outer surface of the oil supply pipe 4. A connecting pipe 21 is fixedly connected to one side of the hydraulic oil tank 2. One end of the connecting pipe 21 is fixedly connected to the input end of the hollow jack 6. The sides of the two arc-shaped locking plates 16 that are close to each other are fixedly connected to... Multiple arc-shaped silicone strips 17 are provided, and anti-slip stripes are formed on the outer surface of the arc-shaped silicone strips 17. One end of the hollow jack 6 is fixedly connected to an annular disc 12. Specifically, the limiting slide hole 19 cooperates with the limiting slide plate 18 to guide the movement of the arc-shaped locking plate 16, ensuring smooth clamping action and avoiding deviation. The limiting plate 13 prevents the sliding support plate 10 from disengaging from the limiting slide seat 11, improving structural safety. The oil supply pipe 4 and the oil supply hose realize the precise delivery of hydraulic oil, which can provide power to the hollow jack 6 and the miniature hydraulic rod 14. The digital pressure gauge 5 provides real-time feedback of pressure data to ensure test accuracy. The connecting pipe 21 realizes the return of hydraulic oil and completes the hydraulic circulation. The arc-shaped silicone strips 17 and anti-slip stripes enhance the clamping friction and avoid damage to the anchor rod. The annular disc 12 improves the force stability of the hollow jack 6 and ensures reliable pull-out testing.

[0021] Working principle: Before testing, move the movable base plate 1 to the position of the anchor rod to be tested, and align the center of the hollow jack 6 with the anchor rod. Then, make the annular disc 12 at one end of the hollow jack 6 contact one side of the rock and soil to be tested. Next, start the hydraulic oil pump 3 and supply oil to the miniature hydraulic rod 14 through the oil supply pipe 4. The telescopic end of the miniature hydraulic rod 14 pushes the arc-shaped locking plate 16 towards the anchor rod until the arc-shaped silicone strip 17 is in contact with the surface of the anchor rod. This can adapt to anchor rods of different diameters without changing the clamps. At the same time, use a wrench to rotate the hexagonal rotating seat 84 of the manual drive component 8, which drives the threaded drive rod 82 to rotate along the threaded hole 81 of the support side plate 7. The threaded drive rod 82 pushes the auxiliary locking clamp 20 to move through the bearing ring 83. The support slide rod 85 slides along the support slide cylinder 86 to assist in the guide, so that the auxiliary locking clamp 20 and the arc-shaped locking plate 16 cooperate to clamp the anchor rod, replacing the traditional knocking locking method and avoiding thread damage.

[0022] After clamping, the hydraulic oil pump 3 supplies oil to the hollow jack 6 through the oil supply pipe 4. The hollow jack 6 has a hollow structure adapted for the anchor rod to pass through, and is externally connected to the limiting slide 11 and the annular disc 12. The hydraulic oil pump 3 pressurizes the oil in the hydraulic oil tank 2 and sends it to the hollow jack 6 through the oil supply pipe 4. The hydraulic oil pushes the internal piston to move, and the piston drives the clamping assembly arc-shaped locking plate 16 and other components to stretch the anchor rod outward, generating a pull-out force. The annular disc 12... To improve stress stability, the hollow jack 6 generates a pulling force, which can pull the anchor rod outward through the clamping assembly. The digital pressure gauge 5 then displays the pressure data in real time to achieve the pulling force test. During the test, the sliding support plate 10 slides along the limit slide 11 to ensure stability during pulling. After the test is completed, the micro hydraulic rod 14 retracts, driving the arc-shaped locking plate 16 to reset. The hexagonal rotating seat 84 rotates in the opposite direction to loosen the auxiliary locking clamp 20, which can quickly complete the disassembly. This solves the problem of cumbersome disassembly of traditional clamps and improves the testing efficiency.

[0023] It should also be noted that, in terms of circuit structure, the drive and control circuits of this utility model are common and mature technologies. Those skilled in the art can select appropriate circuit components to build the circuit according to the power requirements and control requirements of the equipment. For the power supply components, common general power supply equipment on the market and electrical components of this application can be used. These are all common electrical equipment in the prior art. In addition, it needs to be connected to an external control system. The control circuit can be implemented by those skilled in the art through simple programming. This application will not elaborate further.

[0024] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalent elements of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An anchor bolt pulling device, comprising a movable base plate (1) and a hollow jack (6), characterized in that: The upper surface of the movable base plate (1) is fixedly equipped with a hydraulic oil tank (2) and a hydraulic oil pump (3). The outer surface of the hollow jack (6) is fixedly connected with two limiting slides (11). The inner walls of the two limiting slides (11) are slidably connected with sliding support plates (10). One side of each of the two sliding support plates (10) is fixedly connected with a support plate (9). The two support plates (9) are fixedly installed with miniature hydraulic rods (14) on the side away from each other. The telescopic ends of the two miniature hydraulic rods (14) are fixedly installed with arc-shaped locking plates (16). The outer surfaces of the two sets of support plates (9) are fixedly connected with connecting blocks (15). The two sets of connecting blocks (15) are fixedly connected with two support side plates (7) on the side close to each other. One side of each of the two support side plates (7) is provided with a manual drive component (8). One side of each of the two manual drive components (8) is provided with an auxiliary locking clamp (20). The output end of the hydraulic oil pump (3) is fixedly connected to the oil supply pipe (4). One end of the oil supply pipe (4) is connected to the oil injection end of the hollow jack (6) and the oil injection end of the miniature hydraulic rod (14) through the oil supply hose. The hydraulic oil pump (3) drives the miniature hydraulic rod (14) to clamp the anchor rod and drives the hollow jack (6) to apply axial load to the clamped anchor rod.

2. The anchor bolt pull-out device according to claim 1, characterized in that: The manual drive component (8) includes a threaded hole (81) on one side of a support side plate (7), and a threaded drive rod (82) is threadedly connected to the inner wall of the threaded hole (81). One end of the threaded drive rod (82) is fixedly connected to a hexagonal rotating seat (84).

3. The anchor bolt pull-out device according to claim 2, characterized in that: A bearing ring (83) is fixedly embedded on one side of the auxiliary locking clamp (20). The outer surface of one end of the threaded drive rod (82) is fixedly connected to the inner ring of the bearing ring (83). Two support slides (86) are fixedly embedded on one side of the support side plate (7). The inner rings of the two support slides (86) are slidably connected to support slide rods (85). One end of the two support slide rods (85) is fixedly connected to one side of the auxiliary locking clamp (20).

4. The anchor bolt pull-out device according to claim 1, characterized in that: Each of the two sliding support plates (10) has a limiting sliding hole (19) on one side. The inner walls of the two limiting sliding holes (19) are slidably connected to a limiting slide plate (18). One side of each of the two limiting slide plates (18) is fixedly connected to one side of each of the two arc-shaped locking plates (16).

5. The anchor bolt pull-out device according to claim 1, characterized in that: One end of each of the two sliding support plates (10) is fixedly connected to a limiting plate (13), and the limiting plate (13) is located on one side of the limiting slide (11).

6. The anchor bolt pull-out device according to claim 1, characterized in that: The outer surface of the oil pipeline (4) is fixedly connected to a digital pressure gauge (5), and one side of the hydraulic oil tank (2) is fixedly connected to a connecting pipe (21). One end of the connecting pipe (21) is fixedly connected to the input end of the hollow jack (6).

7. The anchor bolt pull-out device according to claim 1, characterized in that: Multiple arc-shaped silicone strips (17) are fixedly connected to one side of the two arc-shaped locking plates (16) that are close to each other, and anti-slip stripes are provided on the outer surface of the arc-shaped silicone strips (17). One end of the hollow jack (6) is fixedly connected to an annular disc (12).

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