A pile foundation bearing detection device
By using a multi-point fixing structure and a hydraulically driven pile foundation bearing capacity testing device, the instability problem of pile foundations during testing has been solved, achieving stable clamping and efficient testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG CENTENARY FOUNDATION ENGINEERING CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-06-16
AI Technical Summary
Existing pile foundation bearing capacity testing devices only clamp the piles at two points on the left and right when fixing them, which makes the piles unstable and prone to displacement, affecting the testing results.
The multi-point fixing structure includes components such as Block 1, spring, Block 3, and moving plate. The pile foundation is fixed at multiple positions, and stable clamping and detection are achieved by combining hydraulic cylinders and motor drive.
This improves the stability of pile foundation testing, avoids pile foundation deviation during the testing process, and ensures the accuracy and efficiency of the test results.
Smart Images

Figure CN224363364U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pile foundation testing, specifically a pile foundation bearing capacity testing device. Background Technology
[0002] To ensure the quality and safety of construction projects, it is essential to test the bearing capacity of the foundation and pile foundation during the construction process. CN221941458U discloses a pile foundation bearing capacity testing device, which includes a testing box with an open upper part. The device is located at the top of the testing box, and fixed frames are symmetrically arranged above the left and right ends of the testing box. A cylinder is installed at the bottom of the fixed frame.
[0003] The aforementioned pile foundation bearing capacity testing device only clamps the piles at two points on the left and right sides to achieve fixation. This simple method may result in the piles not being fully secured, thus affecting the user's testing work. Therefore, a new pile foundation bearing capacity testing device is proposed to address the problems mentioned above. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a pile foundation bearing capacity testing device that can fix the pile foundation at multiple locations. This makes the pile foundation more stable during testing, preventing it from shifting due to instability and thus affecting the user's testing work.
[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a testing box, inside which are two blocks of the first rank, each with a sliding hole on its inner side. A block of the second rank is slidably connected to the inner side of each of the two sliding holes. Two fixed shafts are fixedly connected to the bottom of each of the two blocks of the first rank, and a block of the third rank is rotatably connected to the outer side of each of the two fixed shafts. A groove is formed at the bottom of each of the two blocks of the first rank, and a spring is fixedly connected to the inner wall of one side of each of the two grooves. The other end of each of the two springs is fixedly connected to the corresponding side of the block of the second rank. One end of each of the two blocks of the third rank located on the same side is movably abutting against the same side of the block of the second rank. A movable plate is provided on the top of the testing box, and a movable shell is slidably connected to the inner side of the movable plate. A pressure plate is fixedly connected to the bottom of the movable shell.
[0006] Preferably: a fixed shell is fixedly connected to the top of the movable plate, a motor is fixedly connected to the inner wall of one side of the fixed shell, a first roller is fixedly connected to the output end of the motor, a worm is fixedly connected to the outer side of the first roller, a worm wheel is meshed on the outer side of the worm, a screw is fixedly connected to the inner side of the worm wheel, and the outer side of the screw is threadedly connected to the inner side of the movable shell.
[0007] Preferably, two cylinders are fixedly connected to both sides of the detection box, and the output ends of both cylinders are fixedly connected to the bottom of the moving plate.
[0008] Preferably, hydraulic cylinders are fixedly connected to the inner walls on both sides of the testing box, and the output ends of the two hydraulic cylinders are fixedly connected to one side of the corresponding No. 1 block.
[0009] Preferably, the detection box is rotatably connected to a No. 1 door and a No. 2 door, and the No. 1 door is connected to a lever by bolts and threads, and the rear side of the lever is fixedly connected to the front side of the No. 2 door, and explosion-proof glass is fixedly connected to the inner side of both the No. 1 door and the No. 2 door.
[0010] Preferably, the screw and the outer side of the first roller are rotatably connected to the inner side of the fixed shell.
[0011] Preferably, the bottom inner wall of the testing box is fixedly connected with a positioning groove.
[0012] Compared with the prior art, the present invention provides a pile foundation bearing capacity testing device, which has the following beneficial effects:
[0013] 1. This type of pile foundation bearing capacity testing device can help users quickly place the pile foundation in the appropriate position by utilizing the positioning effect of the positioning groove, thereby speeding up the user's work efficiency.
[0014] 2. This type of pile foundation bearing capacity testing device uses the inner side of the moving plate to limit the movement of the moving shell, which allows the moving shell to remain stable when it moves vertically.
[0015] 3. This type of pile foundation bearing capacity testing device, through the cooperation between block No. 1, spring and block No. 3, allows the device to fix the pile foundation from multiple positions. This makes the pile foundation more stable during testing and avoids the pile foundation shifting due to instability during testing, thus affecting the user's testing work. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the structure of block number two of this utility model;
[0019] Figure 4 for Figure 2 A magnified view of a portion of the image.
[0020] In the diagram: 1. Detection box; 2. Hydraulic cylinder; 3. Block 1; 4. Block 2; 5. Fixed shaft; 6. Block 3; 7. Spring; 8. Cylinder; 9. Moving plate; 10. Moving shell; 11. Pressure plate; 12. Screw; 13. Motor; 14. Roller 1; 15. Worm gear; 16. Worm wheel; 17. Door 1; 18. Door 2. Detailed Implementation
[0021] 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. Example
[0022] Please see Figure 1 - Figure 4 The pile foundation bearing capacity testing device in this embodiment includes a testing box 1. Two blocks 3 are provided inside the testing box 1, and each block 3 has a sliding hole. A block 4 is slidably connected to the inside of each sliding hole. Two fixed shafts 5 are fixedly connected to the bottom of each block 3, and a block 6 is rotatably connected to the outside of each fixed shaft 5. A groove is provided at the bottom of each block 3. A spring 7 is fixedly connected to the inner wall of one side of each groove, and the other end of each spring 7 is fixedly connected to the corresponding side of the block 4. One end of each of the two blocks 6 located on the same side is movably abutting against the same side of the block 4. A movable plate 9 is provided on the top of the testing box 1. A movable shell 10 is slidably connected to the inside of the movable plate 9, and a pressure plate 11 is fixedly connected to the bottom of the movable shell 10.
[0023] In this process, block 3 begins to move horizontally, and then block 4 first contacts one side of the pile foundation. This causes block 4 to begin sliding inside block 3, and spring 7 is stretched. As block 3 continues to move, one side of block 4 begins to abut against block 6, causing block 6 to rotate. When block 3 is completely fixed to one side of the pile foundation, the other end of block 6 is also completely fixed to the pile foundation. This allows the pile foundation to be fixed in multiple positions on both sides.
[0024] A fixed shell is fixedly connected to the top of the movable plate 9. A motor 13 is fixedly connected to the inner wall of one side of the fixed shell. A first roller 14 is fixedly connected to the output end of the motor 13. A worm gear 15 is fixedly connected to the outer side of the first roller 14. A worm wheel 16 meshes with the outer side of the worm gear 15. A screw 12 is fixedly connected to the inner side of the worm wheel 16. The outer side of the screw 12 is threadedly connected to the inner side of the movable shell 10. Two cylinders 8 are fixedly connected to both sides of the detection box 1. The output ends of the two cylinders 8 are fixedly connected to the bottom of the movable plate 9. This allows the movable plate 9 to be pressed down, thus facilitating the detection work.
[0025] Hydraulic cylinders 2 are fixedly connected to the inner walls of both sides of the testing box 1, and the output ends of the two hydraulic cylinders 2 are fixedly connected to the side of the corresponding block 3. A door 17 and a door 18 are rotatably connected to one side of the testing box 1. A lever is connected to the door 17 by bolts and threads, and the rear side of the lever is fixedly connected to the front side of the door 18. Explosion-proof glass is fixedly connected to the inner side of both doors 17 and 18 to prevent flying debris from inside the device from hitting the staff and to facilitate the user's observation of the inside of the device.
[0026] The screw 12 and the first roller 14 are rotatably connected to the inside of the fixed shell. The bottom inner wall of the detection box 1 is fixedly connected with a positioning groove, which makes it easy for the pile foundation to be quickly placed in a suitable position inside the device.
[0027] The working principle of the above embodiments is as follows:
[0028] In use, by opening door 17 and door 2, the pile foundation is placed inside the testing box 1 according to the positioning groove. The user then closes door 17 and door 2, securing them with bolts. Next, the hydraulic cylinder 2 is activated, causing block 3 to begin horizontal movement. Immediately afterward, block 4 contacts one side of the pile foundation, causing it to slide inside block 3 and spring 7 to stretch. As block 3 continues to move, one side of block 4 begins to abut against block 6, causing block 6 to rotate. When block 3… When the pile is completely fixed to one side of the pile foundation, the other end of block 6 is also completely fixed to the pile foundation. This allows the pile foundation to be fixed in multiple positions on both sides. Then, the user starts motor 13 according to the height of the pile foundation, which causes roller 14 to start rotating. Then, worm gear 15 drives worm wheel 16 to rotate, which causes screw 12 to rotate. Then, moving shell 10 drives pressure plate 11 to move vertically. After adjusting the position of pressure plate 11, cylinder 8 is started, which causes moving plate 9 to start pressing down. Then, pressure plate 11 is placed on top of the pile foundation, thereby testing the bearing capacity of the pile foundation.
[0029] The installation method, connection method, or setting method disclosed in this embodiment are all common mechanical connections.
[0030] Any connection method that can achieve its beneficial effect can be implemented, so the specific structural composition and working principle will not be described in detail in this embodiment.
[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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A pile foundation bearing capacity testing device, comprising a testing box (1), characterized in that: The inner side of the test box (1) is provided with two No. 1 blocks (3), and the inner side of the two No. 1 blocks (3) is provided with sliding holes. The inner side of the two sliding holes is slidably connected with a No. 2 block (4). The bottom of the two No. 1 blocks (3) is fixedly connected with two fixed shafts (5). The outer side of the two fixed shafts (5) is rotatably connected with a No. 3 block (6). The bottom of the two No. 1 blocks (3) is provided with grooves. The inner wall of one side of the two grooves is fixedly connected with a spring (7). The other end of the two springs (7) is fixedly connected to the corresponding side of the No. 2 block (4). The two No. 3 blocks (6) located on the same side are movably abutting against the same side of the No. 2 block (4). The top of the test box (1) is provided with a movable plate (9). The inner side of the movable plate (9) is slidably connected with a movable shell (10). The bottom of the movable shell (10) is fixedly connected with a pressure plate (11).
2. The pile foundation bearing capacity testing device according to claim 1, characterized in that: The top of the movable plate (9) is fixedly connected to a fixed shell, and a motor (13) is fixedly connected to the inner wall of one side of the fixed shell. A first roller (14) is fixedly connected to the output end of the motor (13), and a worm (15) is fixedly connected to the outer side of the first roller (14). A worm wheel (16) is meshed on the outer side of the worm (15), and a screw (12) is fixedly connected to the inner side of the worm wheel (16). The outer side of the screw (12) is threadedly connected to the inner side of the movable shell (10).
3. The pile foundation bearing capacity testing device according to claim 1, characterized in that: The detection box (1) has two cylinders (8) fixedly connected to both sides, and the output ends of the two cylinders (8) are fixedly connected to the bottom of the moving plate (9).
4. The pile foundation bearing capacity testing device according to claim 1, characterized in that: Hydraulic cylinders (2) are fixedly connected to the inner walls on both sides of the detection box (1), and the output ends of the two hydraulic cylinders (2) are fixedly connected to one side of the corresponding block (3).
5. The pile foundation bearing capacity testing device according to claim 1, characterized in that: The detection box (1) is rotatably connected to a first door (17) and a second door (18) on one side. The first door (17) is connected to a lever by bolt thread. The rear side of the lever is fixedly connected to the front side of the second door (18). Explosion-proof glass is fixedly connected to the inner side of both the first door (17) and the second door (18).
6. The pile foundation bearing capacity testing device according to claim 2, characterized in that: The screw (12) and the first roller (14) are rotatably connected to the inside of the fixed shell.
7. The pile foundation bearing capacity testing device according to claim 1, characterized in that: The bottom inner wall of the testing box (1) is fixedly connected with a positioning groove.