Self-adaptive hydraulic clamp applied to uplift bearing capacity detection of prefabricated square pile

By designing an adaptive hydraulic clamp applied to the load bearing capacity detection of prefabricated square piles, the problem of low on-site adaptability of existing detection devices is solved, and the rapid clamping and stable connection of prefabricated square piles of different specifications is achieved, and the reliability and adaptability of the detection results are improved.

CN222796536UActive Publication Date: 2025-04-25FOSHAN CITY SHUNDE DISTRICT CONSTR ENG QUALITY & SAFETY SUPERVISION & TESTING CENT
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Patent Information

Application Number
CN202421527280.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-28
Publication Date
2025-04-25
Estimated Expiration
2034-06-28

AI Technical Summary

Technical Problem

The existing square pile pull-up bearing capacity detection device has low on-site adaptability and cannot be adjusted according to actual use. It is complicated to install, making it difficult to adapt to prefabricated square piles of different specifications.

Method used

An adaptive hydraulic clamp applied to the detection of the load bearing capacity of prefabricated square piles is designed, and the linear slope design of the first wedge clip and the second wedge clip is adopted. The second wedge clip is driven by a hydraulic oil pump to limit its position, so as to achieve rapid clamping of the prefabricated square piles and adapt to different specifications of prefabricated square piles.

Benefits of technology

It improves the adaptability and stability of the detection device, ensures the reliability and effectiveness of the detection results, reduces the problem of separation from prefabricated square piles, has stronger adaptability, and is suitable for prefabricated square piles of different specifications.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of pile foundation detection equipment, and particularly discloses a self-adaptive hydraulic clamp applied to uplift bearing capacity detection of a prefabricated square pile, the self-adaptive hydraulic clamp comprises a first wedge-shaped clamping piece, a second wedge-shaped clamping piece, a hydraulic oil pump and a barrel, one side of the first wedge-shaped clamping piece is in contact with the prefabricated square pile, and the other side of the second wedge-shaped clamping piece is in contact with the barrel; the second wedge-shaped clamping piece and the first wedge-shaped clamping piece are oppositely arranged and used in cooperation with each other, the face, close to the first wedge-shaped clamping piece, of the second wedge-shaped clamping piece is a linear slope face, and the linear slope face of the second wedge-shaped clamping piece is used for making contact with the linear slope face of the first wedge-shaped clamping piece. The hydraulic oil pump is connected with the first wedge-shaped clamping piece and the second wedge-shaped clamping piece and used for driving the second wedge-shaped clamping piece to move relative to the first wedge-shaped clamping piece, and the barrel is connected with the second wedge-shaped clamping piece and used for limiting the position of the second wedge-shaped clamping piece. The square pile uplift bearing capacity detection device has the effect that the problem that an existing square pile uplift bearing capacity detection device is low in field adaptability is solved.
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Description

Technical Field

[0001] The present application relates to the field of pile foundation testing equipment, and in particular to an adaptive hydraulic clamp used for testing the pull-out bearing capacity of prefabricated square piles. Background Art

[0002] The pull-out bearing capacity test of square piles is an important part of ensuring the safety of pile foundation structures. It can evaluate the bearing capacity of piles under tension, thus providing an important basis for engineering design. At present, the commonly used pull-out bearing capacity test of square piles mainly uses static load tests to test the pull-out bearing capacity of square piles.

[0003] The static load test evaluates the pull-out bearing capacity of the pile by applying a certain vertical tensile force to the top of the pile and then measuring the displacement of the pile body. Compared with the newer dynamic detection technology, the static load test is relatively simple to operate.

[0004] However, the traditional single pile pull-out test is to anchor the steel bars of the prefabricated square pile on a steel plate with a pre-drilled hole, and apply a pull-out force to the pile by pulling the steel plate. This device requires direct welding of the steel plate and the steel bars of the square pile, which is inconvenient to install and cannot be adjusted according to actual usage conditions, and has low on-site adaptability. Utility Model Content

[0005] In order to improve the problem of low on-site adaptability of existing square pile pull-out bearing capacity testing devices, the present application provides an adaptive hydraulic clamp for use in prefabricated square pile pull-out bearing capacity testing.

[0006] The present application provides an adaptive hydraulic fixture for testing the pull-out bearing capacity of prefabricated square piles, which adopts the following technical solution:

[0007] An adaptive hydraulic fixture for testing the pull-out bearing capacity of prefabricated square piles, comprising:

[0008] A first wedge-shaped clamping piece, one side of which is in contact with the prefabricated square pile, and one side of which is away from the prefabricated square pile is a straight slope;

[0009] a second wedge-shaped clamping piece, arranged opposite to the first wedge-shaped clamping piece and used in combination with the first wedge-shaped clamping piece, wherein a surface of the second wedge-shaped clamping piece close to the first wedge-shaped clamping piece is a straight slope surface, and the straight slope surface of the second wedge-shaped clamping piece is used to contact the straight slope surface of the first wedge-shaped clamping piece;

[0010] a hydraulic oil pump, connected to the first wedge-shaped clamping piece and the second wedge-shaped clamping piece respectively, and used for driving the second wedge-shaped clamping piece to move relative to the first wedge-shaped clamping piece;

[0011] The cylinder is connected to the second wedge-shaped clamping piece and is used to limit the position of the second wedge-shaped clamping piece.

[0012] By adopting the above technical solution, the straight slope design of the first wedge-shaped clamp and the second wedge-shaped clamp allows the cylinder to limit the position of the second wedge-shaped clamp when the inspector changes the position of the second wedge-shaped clamp through the hydraulic oil pump, thereby ensuring that the first wedge-shaped clamp is always in contact with the second wedge-shaped clamp, achieving rapid clamping of the prefabricated square pile, and further ensuring the adaptability of the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square pile, thereby improving the problem of low on-site adaptability of the existing square pile pull-out bearing capacity detection device; and, when the tension source pulls the cylinder, the first wedge-shaped clamp, the second wedge-shaped clamp, the hydraulic oil pump and the prefabricated square pile form a stable connection structure, ensuring that the tension of the tension source can be transmitted to the prefabricated square pile, thereby ensuring the reliability and effectiveness of the detection result.

[0013] Preferably, the thickness of the upper portion of the first wedge-shaped clip is smaller than the thickness of the lower portion of the first wedge-shaped clip, a surface of the upper portion of the first wedge-shaped clip away from the prefabricated square pile is rotatably connected to one end of the hydraulic oil pump, and a surface of the lower portion of the first wedge-shaped clip away from the prefabricated square pile is used to connect to the straight slope surface of the second wedge-shaped clip.

[0014] By adopting the above technical scheme, since the position of the first wedge-shaped clamp is fixed after contact with the prefabricated square pile, the first wedge-shaped clamp is rotatably connected to the hydraulic oil pump so that the hydraulic oil pump can rotate relative to the first wedge-shaped clamp, thereby making the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square piles adaptable to prefabricated square piles of different specifications, further improving and improving the problem of low adaptability of the existing square pile pull-out bearing capacity detection on site; at the same time, the design of the straight slope of the first wedge-shaped clamp can provide a larger contact area, ensuring that the first wedge-shaped clamp is firmly connected to the second wedge-shaped clamp, reducing the problem of the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square piles being detached from the prefabricated square piles during the detection process, and ensuring the working stability of the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square piles.

[0015] Preferably, the thickness of the upper portion of the second wedge-shaped clip is greater than the thickness of the lower portion of the second wedge-shaped clip, and a surface of the second wedge-shaped clip away from the first wedge-shaped clip is rotatably connected to the other end of the hydraulic oil pump.

[0016] By adopting the above technical solution, the straight slope of the second wedge-shaped clamp can provide a larger contact area, which helps the second wedge-shaped clamp and the first wedge-shaped clamp to form a more stable clamping structure, ensuring that when tension is applied, the second wedge-shaped clamp, the first wedge-shaped clamp and the prefabricated square pile can form a stable whole, avoiding the prefabricated square pile from being separated from the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square pile; at the same time, the straight slope of the second wedge-shaped clamp is matched with the straight slope of the first wedge-shaped clamp for use, and within the load range, the greater the tension provided by the tension source, the tighter the connection between the first wedge-shaped clamp, the second wedge-shaped clamp and the prefabricated square pile is, thereby realizing the adaptive synchronization function of the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square pile.

[0017] Preferably, a plurality of the first wedge-shaped clips and the second wedge-shaped clips are provided, each first wedge-shaped clip is in contact with a corresponding surface of the prefabricated square pile, each second wedge-shaped clip is arranged opposite to the corresponding first wedge-shaped clip, and each second wedge-shaped clip is connected to an adjacent second wedge-shaped clip.

[0018] By adopting the above technical solution, a plurality of first wedge-shaped clamps and a plurality of second wedge-shaped clamps can increase the contact points between the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square piles and the prefabricated square piles, thereby providing a greater clamping force for the prefabricated square piles, reducing the impact damage caused by local stress concentration, and avoiding the separation of the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square piles from the prefabricated square piles, thereby ensuring the working stability of the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square piles.

[0019] Preferably, a plurality of the hydraulic oil pumps are provided, and each hydraulic oil pump is respectively connected to a corresponding first wedge-shaped clamp and a corresponding second wedge-shaped clamp.

[0020] By adopting the above technical scheme, when conducting the pull-out bearing capacity test of prefabricated square piles, pile foundations of different sizes and shapes may be encountered, and the actual specifications of each side of a single prefabricated square pile may be different. Each hydraulic oil pump can provide different clamping forces and provide different angles for the corresponding second wedge-shaped clamps to adapt to various testing needs and prefabricated square piles of various specifications, thereby further improving the problem of low on-site adaptability of existing square pile pull-out bearing capacity testing devices.

[0021] Preferably, it also includes a first connecting member and a second connecting member, and a plurality of the first connecting members and the second connecting members are provided, each first connecting member is provided on a side of the upper part of the corresponding first wedge-shaped clamp away from the prefabricated square pile, each first connecting member is used to connect to the corresponding hydraulic oil pump, and each second connecting member is provided on a side of the corresponding second wedge-shaped clamp close to the corresponding first wedge-shaped clamp, and each second connecting member is used to connect to the corresponding hydraulic oil pump.

[0022] By adopting the above technical solution, each first connecting member and each second connecting member provide a stable connection point for the corresponding first wedge clamp, the second wedge clamp and the hydraulic oil pump, ensuring that each hydraulic oil pump can rotate relative to the corresponding first wedge clamp and the corresponding second wedge clamp; at the same time, through the corresponding first connecting member and the corresponding second connecting member, each hydraulic oil pump can transmit force to the corresponding first wedge clamp and the second wedge clamp, reducing the deformation or displacement of the first wedge clamp and / or the second wedge clamp due to local uneven force, thereby improving the working stability of the adaptive hydraulic clamp used for prefabricated square pile pull-out bearing capacity detection.

[0023] Preferably, the inner wall of the cylinder is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are respectively connected to corresponding second wedge-shaped clips.

[0024] By adopting the above technical solution, the reinforcing ribs can disperse the force generated by the tension source to the second wedge-shaped clamp, reduce local stress concentration, and avoid deformation or displacement of the second wedge-shaped clamp due to local uneven force, thereby improving the durability and reliability of the adaptive hydraulic clamp used for prefabricated square pile pull-out bearing capacity testing.

[0025] Preferably, the cylinder is further provided with a suspension rod and a connecting piece, the suspension rod is arranged on the outer wall of the cylinder, and two ends of the connecting piece are respectively connected to the tension source and the suspension rod.

[0026] By adopting the above technical solution, the connecting piece connects the tension source with the hanger, which can effectively transmit the tension generated by the tension source to the cylinder, and then to the second wedge-shaped clamp, the hydraulic oil pump, the first wedge-shaped clamp and the prefabricated square pile, thereby improving the load-bearing efficiency of the tension source.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The straight slope design of the first wedge-shaped clamp and the second wedge-shaped clamp allows the cylinder to limit the position of the second wedge-shaped clamp when the inspector changes the position of the second wedge-shaped clamp through the hydraulic oil pump, thereby ensuring that the first wedge-shaped clamp is always in contact with the second wedge-shaped clamp, achieving rapid clamping of the prefabricated square pile, and further ensuring the adaptability of the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square pile, thereby improving the problem of low on-site adaptability of the existing square pile pull-out bearing capacity detection device; and, when the tension source pulls the cylinder, the first wedge-shaped clamp, the second wedge-shaped clamp, the hydraulic oil pump and the prefabricated square pile form a stable connection structure, ensuring that the tension of the tension source can be transmitted to the prefabricated square pile, thereby ensuring the reliability and effectiveness of the detection result.

[0029] 2. Since the position of the first wedge-shaped clamp is fixed after contact with the prefabricated square pile, the first wedge-shaped clamp is rotatably connected to the hydraulic oil pump so that the hydraulic oil pump can rotate relative to the first wedge-shaped clamp, thereby making the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square piles adaptable to prefabricated square piles of different specifications, further improving the problem of low adaptability of the existing square pile pull-out bearing capacity detection on site; at the same time, the design of the straight slope of the first wedge-shaped clamp can provide a larger contact area, ensuring that the first wedge-shaped clamp is firmly connected to the second wedge-shaped clamp, reducing the problem of the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square piles being detached from the prefabricated square piles during the detection process, and ensuring the working stability of the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square piles.

[0030] 3. The straight slope of the second wedge-shaped clamp can provide a larger contact area, which helps the second wedge-shaped clamp and the first wedge-shaped clamp to form a more stable clamping structure, ensuring that when tension is applied, the second wedge-shaped clamp, the first wedge-shaped clamp and the prefabricated square pile can form a stable whole, avoiding the prefabricated square pile from being separated from the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square pile; at the same time, the straight slope of the second wedge-shaped clamp is used in matching with the straight slope of the first wedge-shaped clamp. Within the load range, the greater the tension provided by the tension source, the tighter the connection between the first wedge-shaped clamp, the second wedge-shaped clamp and the prefabricated square pile is, thereby realizing the adaptive synchronization function of the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of an actual application scenario of an adaptive hydraulic clamp used for testing the pull-out bearing capacity of prefabricated square piles in an embodiment of the present application;

[0032] Figure 2 It is a structural schematic diagram of an adaptive hydraulic fixture used for testing the pull-out bearing capacity of prefabricated square piles in an embodiment of the present application;

[0033] Figure 3 It is a schematic cross-sectional structure diagram of an adaptive hydraulic fixture used for testing the pull-out bearing capacity of prefabricated square piles in an embodiment of the present application;

[0034] Figure 4 This is one of the partial structural schematic diagrams of an adaptive hydraulic fixture used for testing the pull-out bearing capacity of prefabricated square piles in an embodiment of the present application;

[0035] Figure 5 This is the second partial structural schematic diagram of an adaptive hydraulic clamp used for testing the pull-out bearing capacity of prefabricated square piles in an embodiment of the present application.

[0036] Explanation of the accompanying drawings: 1. Cylinder; 2. Reinforcement rib; 3. Suspension rod; 4. First wedge-shaped clip; 5. Second wedge-shaped clip; 6. Hydraulic oil pump; 7. First connecting piece; 8. Second connecting piece; 9. Connecting piece; 91. Vertical rod; 92. Horizontal rod. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-5 This application is described in further detail.

[0038] Before conducting a static load test on the prefabricated square piles, a reaction frame connected to the reaction system needs to be set up on the ground, and a tension source is set on the reaction frame.

[0039] The embodiment of the present application discloses an adaptive hydraulic clamp (hereinafter referred to as the hydraulic clamp) for detecting the pull-out bearing capacity of prefabricated square piles.

[0040] Reference Figure 1 and Figure 2 The hydraulic clamp comprises a first wedge-shaped clamp 4, a hydraulic oil pump 6, a second wedge-shaped clamp 5, and a cylinder 1. In the embodiment of the present application, the pulling force source is specifically a jack.

[0041] like Figure 3 As shown, one side of the first wedge-shaped clamp 4 is a vertical plane, and the vertical plane of the first wedge-shaped clamp 4 is used to contact the prefabricated square piles. The side of the first wedge-shaped clamp 4 away from the prefabricated square piles is a straight slope. The thickness of the upper part of the first wedge-shaped clamp 4 is less than the thickness of the lower part of the first wedge-shaped clamp 4. The upper part of the straight slope of the first wedge-shaped clamp 4 is rotatably connected to one end of the hydraulic oil pump 6 through the first connecting member 7, and the lower part of the straight slope of the first wedge-shaped clamp 4 is used to connect with the straight slope of the second wedge-shaped clamp 5.

[0042] Since the first wedge-shaped clamp 4 is fixed in position after contacting the prefabricated square pile, the first wedge-shaped clamp 4 is rotatably connected to the hydraulic oil pump 6 so that the hydraulic oil pump 6 can rotate relative to the first wedge-shaped clamp 4, thereby enabling the hydraulic clamp to adapt to prefabricated square piles of different specifications, further improving the problem of low adaptability of existing square pile pull-out bearing capacity testing on site.

[0043] At the same time, the straight slope design of the first wedge-shaped clamp 4 can provide a larger contact area, ensuring that the first wedge-shaped clamp 4 is firmly connected to the second wedge-shaped clamp 5, reducing the problem of the hydraulic clamp detaching from the prefabricated square pile during the inspection process, and ensuring the working stability of the hydraulic clamp.

[0044] like Figure 3As shown, the second wedge-shaped clip 5 is arranged opposite to the first wedge-shaped clip 4, and the side of the second wedge-shaped clip 5 close to the first wedge-shaped clip 4 is a straight slope surface, and the straight slope surface of the second wedge-shaped clip 5 is used to contact the straight slope surface of the first wedge-shaped clip 4. The thickness of the upper part of the second wedge-shaped clip 5 is greater than the thickness of the lower part of the second wedge-shaped clip 5. The side of the second wedge-shaped clip 5 close to the first wedge-shaped clip 4 is rotatably connected to the hydraulic oil pump 6 through the second connecting member 8.

[0045] The straight slope of the second wedge-shaped clamp 5 can provide a larger contact area, which helps the second wedge-shaped clamp 5 and the first wedge-shaped clamp 4 to form a more stable clamping structure, ensuring that when a tensile force is applied, the second wedge-shaped clamp 5, the hydraulic oil pump 6, the first wedge-shaped clamp 4 and the prefabricated square pile can form a stable whole, thereby avoiding separation of the prefabricated square pile and the hydraulic clamp.

[0046] At the same time, the straight slope of the second wedge-shaped clamp 5 is matched with the straight slope of the first wedge-shaped clamp 4. Within the load range, the greater the tension provided by the tension source, the tighter the connection between the first wedge-shaped clamp 4 and the second wedge-shaped clamp 5 and the prefabricated square pile, thereby realizing the adaptive synchronization function of the hydraulic clamp.

[0047] Specifically, when the hydraulic oil pump 6 is extended, it drives the second wedge-shaped clip 5 to squeeze the first wedge-shaped clip 4, so that the second wedge-shaped clip 5 is tightly fitted with the first wedge-shaped clip 4, so that the first wedge-shaped clip 4, the second wedge-shaped clip 5 and the hydraulic oil pump 6 form a whole, and then the first wedge-shaped clip 4, the second wedge-shaped clip 5 and the hydraulic oil pump 6 can transmit the pulling force to the prefabricated square piles.

[0048] The hydraulic oil pump 6 rotates relative to the first connecting member 7 and the second connecting member 8 and extends itself to make the second wedge-shaped clamp 5 move relative to the first wedge-shaped clamp 4, thereby ensuring the contact between the first wedge-shaped clamp 4 and the second wedge-shaped clamp 5, allowing the hydraulic clamp to adapt to prefabricated square piles of different specifications, ensuring the adaptability of the hydraulic clamp, and improving the problem of low on-site adaptability of existing square pile pull-out bearing capacity testing devices.

[0049] like Figure 3 and Figure 4As shown, in the embodiment of the present application, a plurality of first wedge-shaped clips 4 and second wedge-shaped clips 5 are provided, each of the first wedge-shaped clips 4 is in contact with a corresponding surface of the prefabricated square pile, each of the second wedge-shaped clips 5 is arranged opposite to the corresponding first wedge-shaped clip 4, and the straight slope surface of each second wedge-shaped clip 5 is in contact with the straight slope surface of the corresponding first wedge-shaped clip 4. A plurality of first wedge-shaped clips 4 and a plurality of second wedge-shaped clips 5 can increase the contact points between the hydraulic clamp and the prefabricated square pile, thereby providing a greater clamping force for the prefabricated square pile, reducing damage caused by local stress concentration, and avoiding separation of the hydraulic clamp from the prefabricated square pile, thereby ensuring the working stability of the hydraulic clamp; the side edges of each second wedge-shaped clip 5 are connected to the side edges of the adjacent second wedge-shaped clips 5, thereby forming a plurality of second wedge-shaped clips 5 as a whole, further enhancing the structural strength of the hydraulic clamp, and ensuring the structural stability of the hydraulic clamp.

[0050] A plurality of hydraulic oil pumps 6 are provided, and each hydraulic oil pump 6 is connected to a corresponding first wedge-shaped clamp 4 and a corresponding second wedge-shaped clamp 5, respectively. When performing pull-out bearing capacity testing of prefabricated square piles, pile foundations of different sizes and shapes may be encountered, and the actual specifications of each side of a single prefabricated square pile may be different. Each hydraulic oil pump 6 can provide a different clamping force and provide a different angle for the corresponding second wedge-shaped clamp 5 to adapt to various testing requirements and prefabricated square piles of various specifications, thereby further improving the problem of low on-site adaptability of existing square pile pull-out bearing capacity testing devices.

[0051] The first connecting member 7 and the second connecting member 8 arranged on the first wedge-shaped clamp 4 and the second wedge-shaped clamp 5 provide stable connection points for the corresponding first wedge-shaped clamp 4, the second wedge-shaped clamp 5 and the hydraulic oil pump 6, ensuring that each hydraulic oil pump 6 can rotate relative to the corresponding first wedge-shaped clamp 4 and the corresponding second wedge-shaped clamp 5; at the same time, through the corresponding first connecting member 7 and the corresponding second connecting member 8, each hydraulic oil pump 6 can transmit force to the corresponding first wedge-shaped clamp 4 and the second wedge-shaped clamp 5, reducing the deformation or displacement of the first wedge-shaped clamp 4 and / or the second wedge-shaped clamp 5 due to local uneven force, thereby improving the working stability of the hydraulic clamp.

[0052] like Figure 1 and Figure 2As shown, the tension source is connected to the cylinder 1, and a suspension rod 3 is provided on the outer wall of the cylinder 1. There are several suspension rods 3, and the several suspension rods 3 are connected to the tension source through corresponding connecting members 9; in the embodiment of the present application, the connecting member 9 is specifically composed of a vertical rod 91 and several horizontal rods 92, one end of each horizontal rod 92 is connected to the corresponding suspension rod 3, and the other end of each horizontal rod 92 is connected to one end of the vertical rod 91, and the end of the vertical rod 91 away from the cylinder 1 is connected to the movable end of the tension source. The inspection personnel can drive the movable end of the tension source to move, thereby lifting the connecting member 9, and transmit the tension generated by the tension source to the cylinder 1 through the vertical rod 91 and the several horizontal rods 92, so as to realize the lifting of the hydraulic clamp.

[0053] like Figure 4 and Figure 5 As shown, the inner wall of the cylinder 1 is provided with a plurality of reinforcing ribs 2, and the plurality of reinforcing ribs 2 are respectively connected to the corresponding second wedge-shaped clips 5. The force generated by the tension source is dispersed to the second wedge-shaped clips 5 through the plurality of reinforcing ribs 2, so as to reduce local stress concentration and avoid deformation or displacement of the second wedge-shaped clip 5 due to local uneven force, thereby improving the durability and reliability of the adaptive hydraulic clamp used for the pull-out bearing capacity detection of the prefabricated square piles, and transmitting the tension generated by the tension source to the second wedge-shaped clip 5, the hydraulic oil pump 6, the first wedge-shaped clip 4 and the prefabricated square piles, so as to improve the bearing efficiency of the tension source.

[0054] The implementation principle of an adaptive hydraulic clamp used for pull-out bearing capacity detection of prefabricated square piles in an embodiment of the present application is as follows: the detection personnel sets the cylinder 1 on the prefabricated square pile, and drives the second wedge-shaped clamp 5 to move relative to the first wedge-shaped clamp 4 through the hydraulic oil pump 6. After the movement of the second wedge-shaped clamp 5, it squeezes the first wedge-shaped clamp 4 and makes the first wedge-shaped clamp 4 fit tightly with the prefabricated square pile, thereby achieving adaptation and clamping of the prefabricated square pile; when the first wedge-shaped clamp 4 fits tightly with the prefabricated square pile, the detection personnel drives the movable end of the tension source to move, thereby lifting the cylinder 1 through the connecting piece 9 and the suspension rod 3, and the cylinder 1 transmits the tension generated by the tension source to the prefabricated square pile through the second wedge-shaped clamp 5, the hydraulic oil pump 6 and the first wedge-shaped clamp 4, finally achieving the pull-out bearing capacity detection of the prefabricated square pile.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An adaptive hydraulic fixture for testing the pull-out bearing capacity of prefabricated square piles, characterized in that: include: A first wedge-shaped clamping piece (4), one side of the first wedge-shaped clamping piece (4) contacts the prefabricated square pile, and the side of the first wedge-shaped clamping piece (4) away from the prefabricated square pile is a straight slope surface; A second wedge-shaped clamp (5) is arranged opposite to the first wedge-shaped clamp (4) and is used in conjunction with the first wedge-shaped clamp (4); a surface of the second wedge-shaped clamp (5) close to the first wedge-shaped clamp (4) is a straight slope surface, and the straight slope surface of the second wedge-shaped clamp (5) is used to contact the straight slope surface of the first wedge-shaped clamp (4); a hydraulic oil pump (6), connected to the first wedge-shaped clamp (4) and the second wedge-shaped clamp (5), respectively, and used for driving the second wedge-shaped clamp (5) to move relative to the first wedge-shaped clamp (4); The cylinder (1) is connected to the second wedge-shaped clamping piece (5) and is used to limit the position of the second wedge-shaped clamping piece (5).

2. The adaptive hydraulic fixture for testing the pull-out bearing capacity of prefabricated square piles according to claim 1 is characterized in that: The thickness of the upper portion of the first wedge-shaped clamp (4) is smaller than the thickness of the lower portion of the first wedge-shaped clamp (4); a surface of the upper portion of the first wedge-shaped clamp (4) away from the prefabricated square pile is rotatably connected to one end of the hydraulic oil pump (6); and a surface of the lower portion of the first wedge-shaped clamp (4) away from the prefabricated square pile is used to connect to the straight slope surface of the second wedge-shaped clamp (5).

3. The adaptive hydraulic fixture for testing the pull-out bearing capacity of prefabricated square piles according to claim 2 is characterized in that: The thickness of the upper portion of the second wedge-shaped clamp (5) is greater than the thickness of the lower portion of the second wedge-shaped clamp (5), and a side of the second wedge-shaped clamp (5) away from the first wedge-shaped clamp (4) is rotatably connected to the other end of the hydraulic oil pump (6).

4. The adaptive hydraulic fixture for testing the pull-out bearing capacity of prefabricated square piles according to claim 3 is characterized in that: A plurality of the first wedge-shaped clips (4) and the second wedge-shaped clips (5) are provided, each first wedge-shaped clip (4) is in contact with a corresponding surface of the prefabricated square pile, each second wedge-shaped clip (5) is arranged opposite to the corresponding first wedge-shaped clip (4), and each second wedge-shaped clip (5) is connected to an adjacent second wedge-shaped clip (5).

5. The adaptive hydraulic fixture for testing the pull-out bearing capacity of prefabricated square piles according to claim 1 is characterized in that: A plurality of hydraulic oil pumps (6) are provided, and each hydraulic oil pump (6) is respectively connected to a corresponding first wedge-shaped clamp (4) and a corresponding second wedge-shaped clamp (5).

6. The adaptive hydraulic fixture for testing the pull-out bearing capacity of prefabricated square piles according to claim 5 is characterized in that: It also includes a first connecting member (7) and a second connecting member (8), wherein a plurality of the first connecting members (7) and the second connecting members (8) are provided, each of the first connecting members (7) is provided on a side of the upper part of the corresponding first wedge-shaped clamp (4) away from the prefabricated square pile, each of the first connecting members (7) is used to connect to a corresponding hydraulic oil pump (6), each of the second connecting members (8) is provided on a side of the corresponding second wedge-shaped clamp (5) close to the corresponding first wedge-shaped clamp (4), and each of the second connecting members (8) is used to connect to a corresponding hydraulic oil pump (6).

7. The adaptive hydraulic fixture for testing the pull-out bearing capacity of prefabricated square piles according to claim 1 is characterized in that: The inner wall of the cylinder (1) is provided with a plurality of reinforcing ribs (2), and the plurality of reinforcing ribs (2) are respectively connected to corresponding second wedge-shaped clips (5).

8. The adaptive hydraulic fixture for testing the pull-out bearing capacity of prefabricated square piles according to claim 7 is characterized in that: The cylinder (1) is also provided with a suspension rod (3) and a connecting piece (9); the suspension rod (3) is arranged on the outer wall of the cylinder (1), and the connecting piece (9) is connected to the suspension rod (3).