Convenient detachable anti-pulling detection device

Abstract

The utility model discloses a convenient detachable anti-pulling detection device which comprises an upper top plate clamping block assembly, a lower clamping block fixing assembly and a connecting assembly, and the upper top plate clamping block assembly and the lower clamping block fixing assembly are combined and connected through the connecting assembly. All parts of the upper top plate clamping block assembly and all parts of the lower clamping block fixing assembly are connected in a locked mode through anchor rod locking assemblies. The device is convenient to install, carry and reuse; the lower clamping block fixing assembly comprises two lower clamping blocks, and can be suitable for uplift detection tests of various square piles with different pile diameters and models by adjusting the distance between the two lower clamping blocks; after the lower clamping block is tensioned and locked through the anchor rod, it is ensured that the lower clamping block does not displace due to increase of anti-pulling detection stress in the detection process, and deviation of a detection result is avoided; the square pile does not need to be subjected to rib stripping welding, and the situation that in the anti-pulling detection process, the steel strand is broken due to the fact that anti-pulling detection stress is increased, and consequently detection test failure is caused is avoided.

Description

Technical Field

[0001] The utility model relates to a detection device, in particular to a convenient detachable pull-out resistance detection device, belonging to the technical field of square pile pull-out resistance detection. Background Art

[0002] Prestressed square piles are increasingly used in construction projects, including low-slab foundations for various industrial and civil structures, such as highways and bridges, ports, docks, water conservancy projects, and municipal infrastructure. In particular, during the project design phase, developers are increasingly requesting that designers use prestressed square piles as foundations, with the goal of reducing costs and increasing efficiency.

[0003] In the pull-out test of prestressed square piles, the conventional method is stripping and welding. The steel strands of the anchor section reserved at the pile head are stripped out and welded to the test steel beam with the steel bars, and the pull-out test is performed using a hydraulic oil jack. However, this method has certain quality and safety hazards. First, it requires high welding quality for steel bars and steel strands to ensure that the welds are not pulled off during the pull-out test. Secondly, the tensile stress of the square pile pull-out test is a limit value, which is twice the characteristic value. The tensile stress of the steel strand can meet the characteristic value. Conventional testing often requires welding steel bars after drilling and planting steel bars in the pile body. The materials of the drilled and planted steel bars and the steel strands are different. During the pull-out test, after the tensile stress increases, the steel strands often break, which causes deviations in the test results. At the same time, it may cause the pull-out device to become unstable, affecting the normal progress of the pull-out test, and posing certain safety risks. In addition, in the prior art, a solid square pile pull-out test device disclosed in announcement number CN219773046U clamps and fixes the solid square pile by the displacement of four sliders, reducing the probability of sliding and falling off during the pull-out test of the solid square pile, ensuring the smooth progress of the test and improving work efficiency. However, in actual operation, although the probability of falling off can be reduced, it is not convenient for disassembly and assembly, which makes the entire pull-out test more time-consuming and labor-intensive. Summary of the Invention

[0004] The purpose of the present invention is to provide a convenient detachable anti-pullout detection device in order to solve at least one of the above technical problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions: a convenient detachable anti-pullout detection device, comprising an upper top plate clamping block assembly, a lower clamping block fixing assembly and a connecting assembly, wherein the upper top plate clamping block assembly and the lower clamping block fixing assembly are arranged in an upper and lower distribution shape, the upper top plate clamping block assembly and the lower clamping block fixing assembly are connected by a connecting assembly, and each component of the upper top plate clamping block assembly and each component of the lower clamping block fixing assembly are locked and connected by an anchor rod locking assembly;

[0006] The upper plate clamping block assembly includes an upper plate, a large clamping block and a small clamping block. The large clamping block and the small clamping block are both arranged on the upper plate surface of the upper plate. The small clamping blocks are respectively located on both sides of the large clamping block, and the large clamping block and the small clamping block are locked and connected by an anchor rod locking assembly.

[0007] The lower clamping block fixing assembly includes two lower clamping blocks, which are arranged below the upper top plate. The square pile to be tested is clamped between the two lower clamping blocks, and the two lower clamping blocks are locked and connected by an anchor rod locking assembly.

[0008] As a further solution of the present invention: a clamping block contact gap is provided between the large clamping block and the small clamping blocks on both sides, and the connecting assembly includes a high-strength vertical screw rod, the rod body of the high-strength vertical screw rod passes through the upper top plate, and the rod body of the high-strength vertical screw rod is provided in the clamping block contact gap.

[0009] As a further solution of the present invention, both side surfaces of the large clamping block and the small clamping block forming the clamping block contact gap are provided with textured contact surfaces.

[0010] As a further solution of the utility model: the lower end of the high-strength vertical screw rod passes through the lower clamping block, and the rod of the high-strength vertical screw rod is also threadedly connected with a high-strength nut, which is respectively tightly attached to the upper and lower ends of the lower clamping block.

[0011] As a further solution of the present invention: the anchor rod locking assembly includes an anchor rod, a lock and a snap ring, the large clamp block and the small clamp block are both penetrated with through holes, the rod body of the anchor rod passes through the through holes opened by the large clamp block and the small clamp block, locks are provided at both ends of the anchor rod, and the locks are clamped on the outer edge of the small clamp block, and a snap ring is clamped between the anchor rod and the lock.

[0012] As a further solution of the present invention: the two lower clamping blocks are also provided with corresponding through holes, anchor rods are passed through the through holes provided by the two lower clamping blocks, and locks are provided at both ends of the anchor rods passing through the lower clamping blocks, and a snap ring is placed between the anchor rods passing through the lower clamping blocks and the locks.

[0013] As a further solution of the utility model: both sides of the upper top plate, large clamping block, small clamping block and lower clamping block are fixedly connected with lifting ears, and the lifting ears are symmetrically arranged on both sides of the upper top plate, large clamping block, small clamping block and lower clamping block.

[0014] The beneficial effects of the present invention are as follows: the present invention is provided with an upper top plate clamping block assembly, a lower clamping block fixing assembly and a connecting assembly; the upper top plate clamping block assembly and the lower clamping block fixing assembly are connected by a combination of connecting assemblies; the various components of the upper top plate clamping block assembly and the various components of the lower clamping block fixing assembly are respectively locked and connected by anchor rod locking assemblies, that is, the detachable design is convenient for installation, transportation and reuse; the lower clamping block fixing assembly provided by the present invention includes two lower clamping blocks, which can be suitable for pull-out test of square piles of various pile diameters by adjusting the spacing between the two lower clamping blocks; after the lower clamping block is tensioned and locked by the prestressed anchor rod, it can be ensured that during the test process, the lower clamping block will not be displaced due to the increase of pull-out test stress, resulting in deviation in the test result; there is no need to strip the reinforcement and weld the square pile, which can avoid the steel strand from breaking due to the increase of pull-out test stress during the pull-out test, resulting in failure of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the large clamping block of the utility model;

[0017] Figure 3 This is a schematic diagram of the small clamping block structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the front view structure of the lower clamping block of the utility model;

[0019] Figure 5 This is a schematic diagram of the side cross-sectional structure of the lower clamping block of the utility model;

[0020] In the figure: 1. Clamp contact gap, 2. Lifting ear, 3. Upper top plate, 4. Large clamp, 5. High-strength vertical screw, 6. Small clamp, 7. Through hole, 8. High-strength nut, 9. Lower clamp, 10. Anchor rod, 11. Textured contact surface, 12. Lock, 13. Snap ring. DETAILED DESCRIPTION

[0021] 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.

[0022] Example 1, as Figures 1 to 5As shown, a convenient detachable pull-out resistance testing device includes an upper plate clamping block assembly, a lower clamping block fixing assembly and a connecting assembly. The upper plate clamping block assembly and the lower clamping block fixing assembly are arranged in an upper and lower distribution shape. The upper plate clamping block assembly and the lower clamping block fixing assembly are connected by a connecting assembly. The various components of the upper plate clamping block assembly and the various components of the lower clamping block fixing assembly are locked and connected by anchor rod locking assemblies.

[0023] The upper plate clamping block assembly includes an upper plate 3, a large clamping block 4 and a small clamping block 6. The large clamping block 4 and the small clamping block 6 are both arranged on the upper plate surface of the upper plate 3. The small clamping blocks 6 are respectively located on both sides of the large clamping block 4. The large clamping block 4 and the small clamping block 6 are locked and connected by an anchor rod locking assembly.

[0024] The lower clamping block fixing assembly includes two lower clamping blocks 9, which are arranged below the upper top plate 3. The square pile to be tested is clamped between the two lower clamping blocks 9, and the two lower clamping blocks 9 are locked and connected by an anchor rod locking assembly.

[0025] Embodiment 2. In addition to all the technical features of embodiment 1, this embodiment also includes: a clamping block contact gap 1 is provided between the large clamping block 4 and the small clamping blocks 6 on both sides; the connecting assembly includes a high-strength vertical screw 5; the rod of the high-strength vertical screw 5 passes through the upper top plate 3, and the rod of the high-strength vertical screw 5 is provided in the clamping block contact gap 1; when the large clamping block 4 and the small clamping block 6 are locked and fixed by the anchor rod locking assembly, the clamping block contact gap 1 between the large clamping block 4 and the small clamping block 6 can clamp and fix the high-strength vertical screw 5, thereby achieving a fixed connection between the upper top plate clamping block assembly and one end of the connecting assembly, and the connection portion is easy to disassemble.

[0026] Both sides of the large clamping block 4 and the small clamping block 6 that constitute the clamping block contact gap 1 are provided with a textured contact surface 11. The textured contact surface 11 can increase the friction between the high-strength vertical screw rod 5 and the rod body, thereby ensuring that the high-strength vertical screw rod 5 is clamped more firmly.

[0027] The lower end of the high-strength vertical screw rod 5 passes through the lower clamping block 9, and the high-strength vertical screw rod 5 is also threadedly connected with a high-strength nut 8. The high-strength nuts 8 are respectively tightly attached to the upper and lower ends of the lower clamping block 9. The lower clamping block 9 can be fixedly connected to the other end of the connecting assembly through the cooperation of the high-strength vertical screw rod 5 and the two high-strength nuts 8, and the connection part is easy to disassemble.

[0028] Embodiment 3. In addition to all the technical features of embodiment 1, this embodiment also includes: the anchor rod locking assembly includes an anchor rod 10, a lock 12 and a snap ring 13. The large clamp block 4 and the small clamp block 6 are both penetrated by a through hole 7. The rod body of the anchor rod 10 passes through the through hole 7 opened by the large clamp block 4 and the small clamp block 6. The two ends of the anchor rod 10 are sleeved with a lock 12, and the lock 12 is clamped on the outer edge of the small clamp block 6. A snap ring 13 is clamped between the anchor rod 10 and the lock 12. The large clamp block 4 and the small clamp block 6 can be combined and connected together through the anchor rod 10, and the large clamp block 4 and the small clamp block 6 are locked and fixed together through the cooperation of the lock 12 and the snap ring 13, and the connection between the large clamp block 4 and the small clamp block 6 can be easily disassembled.

[0029] The two lower clamping blocks 9 are also provided with corresponding through-holes 7, and anchor rods 10 are passed through the through-holes 7 provided by the two lower clamping blocks 9, and locks 12 are provided at both ends of the anchor rods 10 passing through the lower clamping blocks 9, and a snap ring 13 is clamped between the anchor rods 10 passing through the lower clamping blocks 9 and the locks 12. The two lower clamping blocks 9 can be combined and connected together through the anchor rods 10, and the two lower clamping blocks 9 can be locked and fixed together with the square piles to be tested through the cooperation of the locks 12 and the snap rings 13, and the connection between the two lower clamping blocks 9 can be easily disassembled.

[0030] Both sides of the upper top plate 3, the large clamping block 4, the small clamping block 6 and the lower clamping block 9 are fixedly connected with lifting ears 2, and the lifting ears 2 are symmetrically arranged on both sides of the upper top plate 3, the large clamping block 4, the small clamping block 6 and the lower clamping block 9. The lifting ears 2 can be used to conveniently hook and suspend the various components of the detection device, thereby facilitating more labor-saving operation when assembling or disassembling the detection device.

[0031] Working principle: The various components of the detection device are hoisted to the top of the square pile to be tested in turn through the external lifting equipment, and the two lower clamping blocks 9 are placed on both sides of the square pile to be tested. The two lower clamping blocks 9 are combined and connected together through the anchor rod 10, and the two lower clamping blocks 9 are locked and fixed together with the square pile to be tested through the cooperation of the lock 12 and the snap ring 13. Then, the lower clamping block 9 is fixedly connected to the lower end of the high-strength vertical screw 5 through the cooperation of the high-strength vertical screw 5 and the two high-strength nuts 8. The rod of the high-strength vertical screw 5 passes through the upper top plate 3, and the rod of the high-strength vertical screw 5 is arranged in the clamping block contact gap 1. When the large clamping block 4 and the small clamping block 6 are locked and fixed by the anchor rod locking assembly, the clamping block contact gap 1 between the large clamping block 4 and the small clamping block 6 can clamp the high-strength vertical screw 5, and then the assembly of the detection device can be completed, and the pull-out test can be performed by pulling up the upper top plate 3.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A convenient detachable anti-pullout testing device, comprising an upper plate clamping block assembly, a lower clamping block fixing assembly and a connecting assembly, characterized in that: The upper plate clamping block assembly and the lower clamping block fixing assembly are arranged in an upper and lower distribution shape, and the upper plate clamping block assembly and the lower clamping block fixing assembly are connected by a connecting assembly. The components of the upper plate clamping block assembly and the components of the lower clamping block fixing assembly are locked and connected respectively by an anchor rod locking assembly. The upper top plate clamping block assembly comprises an upper top plate (3), a large clamping block (4) and a small clamping block (6), wherein the large clamping block (4) and the small clamping block (6) are both arranged on the upper plate surface of the upper top plate (3), and the small clamping block (6) is respectively located on both sides of the large clamping block (4), and the large clamping block (4) and the small clamping block (6) are locked and connected by an anchor rod locking assembly; The lower clamping block fixing assembly comprises two lower clamping blocks (9), the lower clamping blocks (9) being arranged below the upper top plate (3), the square pile to be tested being clamped between the two lower clamping blocks (9), and the two lower clamping blocks (9) being locked and connected via an anchor rod locking assembly.

2. The detachable anti-pulling detection device according to claim 1, characterized in that: A clamping block contact gap (1) is provided between the large clamping block (4) and the small clamping blocks (6) on both sides. The connecting assembly comprises a high-strength vertical screw rod (5). The rod body of the high-strength vertical screw rod (5) passes through the upper top plate (3), and the rod body of the high-strength vertical screw rod (5) is provided in the clamping block contact gap (1).

3. The detachable anti-pulling detection device according to claim 2, characterized in that: Both sides of the large clamping block (4) and the small clamping block (6) forming the clamping block contact gap (1) are provided with textured contact surfaces (11).

4. The detachable anti-pulling detection device according to claim 2, characterized in that: The lower end of the high-strength vertical screw rod (5) passes through the lower clamping block (9), and the high-strength vertical screw rod (5) is also threadedly connected to a high-strength nut (8), and the high-strength nut (8) is respectively tightly attached to the upper and lower ends of the lower clamping block (9).

5. The detachable anti-pulling detection device according to claim 1 or 4, characterized in that: The anchor rod locking assembly comprises an anchor rod (10), a lock (12) and a snap ring (13); the large clamping block (4) and the small clamping block (6) are both provided with a through hole (7); the rod body of the anchor rod (10) passes through the through hole (7) provided by the large clamping block (4) and the small clamping block (6); the two ends of the anchor rod (10) are provided with a lock (12), and the lock (12) is clamped on the outer side of the small clamping block (6); and the snap ring (13) is clamped between the anchor rod (10) and the lock (12).

6. The detachable anti-pulling detection device according to claim 4, characterized in that: The two lower clamping blocks (9) are also provided with corresponding through holes (7), and anchor rods (10) are passed through the through holes (7) provided in the two lower clamping blocks (9), and locks (12) are sleeved on both ends of the anchor rods (10) passing through the lower clamping blocks (9), and a snap ring (13) is clamped between the anchor rods (10) passing through the lower clamping blocks (9) and the locks (12).

7. The detachable anti-pulling detection device according to claim 1, characterized in that: Both sides of the upper top plate (3), the large clamping block (4), the small clamping block (6) and the lower clamping block (9) are fixedly connected with lifting ears (2), and the lifting ears (2) are symmetrically arranged on both sides of the upper top plate (3), the large clamping block (4), the small clamping block (6) and the lower clamping block (9).

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