Rapid pile foundation bearing capacity detector for engineering site

Abstract

The invention relates to the field of pile foundation detection, and discloses a rapid pile foundation bearing capacity detector for an engineering field, which comprises a cabinet, left and right symmetrical supporting legs slide in the cabinet, one side of each supporting leg is provided with a mounting plate, the bottom of each mounting plate is provided with a crawler belt, and a limiting frame is fixed in the cabinet. A fixing ring is arranged on the outer wall of the limiting frame in a sliding mode, a limiting buckle is installed at one end of the limiting frame to limit the displacement range of the fixing ring, an inner ring is fixed in the fixing ring, a gear ring is rotationally arranged in the inner ring, first gears distributed in an annular array are rotationally arranged in the fixing ring, and the first gears are meshed with the gear ring. Through cooperation of the gear ring, the first gear, the first rack and other parts, the effect that the device carries out fine position adjustment on the pile foundation needing to be detected is achieved, the problem that when the pile foundation is detected, due to position deviation, the detection result is greatly different from the actual situation is solved, and therefore the detection accuracy of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pile foundation detection, in particular to a rapid pile foundation bearing capacity detector used in engineering sites. Background Art

[0002] Pile foundations, as a crucial component of foundation engineering, play a vital role in the stability and safety of buildings and structures. The quality of pile foundation construction directly impacts the overall performance of a project. Therefore, accurate pile foundation testing is crucial. Existing technologies typically employ various pile foundation testing devices, using mechanical and electronic measurement methods to measure and evaluate indicators such as pile position and bearing capacity, thereby ensuring the quality of pile foundation construction.

[0003] However, there are still some significant problems with the existing technology in practical applications. First, when the equipment is testing the pile foundation, the lack of fine coordination between the mechanical components leads to slight deviations in the position, which directly affects the accuracy of the test results. Secondly, in a complex construction site environment, the ups and downs of the road surface and the displacement bumps may cause insufficient shock absorption of the equipment, resulting in positioning errors during long-term operations, affecting the ability to continue working. Finally, after the pile foundation positioning is completed, the existing equipment may not be able to effectively adapt to the position deviation caused by the test, which has an adverse effect on multiple tests and result comparisons. Therefore, it is necessary to improve the existing equipment to improve the accuracy, stability and work efficiency of the test. Summary of the Invention

[0004] In view of the deficiencies of the existing technology, the present invention provides a rapid pile foundation bearing capacity tester for use on engineering sites, which solves the problems of equipment position deviation, insufficient shock absorption and insufficient adaptive fixing ability during pile foundation testing.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a rapid pile foundation bearing capacity tester for engineering sites, including a cabinet, wherein the cabinet has left-right symmetrical support legs sliding inside, a mounting plate is installed on one side of the support legs, and tracks are installed on the bottom of the mounting plates. A limit frame is fixed inside the cabinet, a fixed ring is slid on the outer wall of the limit frame, a limit buckle is installed on one end of the limit frame to limit the displacement range of the fixed ring, an inner ring is fixed inside the fixed ring, a gear ring rotates inside the inner ring, and a gear 1 distributed in a ring array rotates inside the fixed ring, and the gear 1 is meshed with the gear ring. , a rack 1 distributed in a ring array slides inside the fixed ring, the rack 1 and the gear 1 are meshed with each other, a motor 1 is provided inside the inner ring, the output end of the motor 1 is connected to one of the gears 1, and a positioning plate is fixed to each end of the rack 1, push-pull components are installed on both sides of the fixed ring, a lifting and shock absorbing mechanism is provided between the cabinet and the support leg, a positioning mechanism is installed inside the mounting plate, a stabilizing component is provided between the cabinet and the mounting plate, a pressure detection component is installed at the bottom of the cabinet, and a gas tank 2 is provided on the top of the cabinet, and the gas tank 2 and the pressure detection component are connected by an air pipe.

[0006] Preferably, the push-pull assembly includes a limit plate, which is fixed on both sides of the fixing ring and slides inside the cabinet. A cylinder 1 is provided inside the cabinet, and the output end of the cylinder 1 is fixed on the top of the limit plate.

[0007] Preferably, the lifting and shock absorbing mechanism includes a lifting component and a shock absorbing component;

[0008] The lifting assembly includes motor 2, which is arranged inside the cabinet. A left-right symmetrical gear 2 rotates inside the cabinet. The output end of motor 2 is connected to one of gear 2. Gear 2 is provided with connecting rod 1 through a rotating shaft. Connecting rod 2 rotates at one end of connecting rod 1 away from gear 2. A docking plate rotates at one end of connecting rod 2 away from connecting rod 1. The shock absorbing assembly is arranged between the docking plate and the support leg.

[0009] Preferably, the shock-absorbing assembly includes a fixed plate, which is symmetrically distributed up and down, and the chalk is connected to the docking plate and the support leg. The fixed plates are all rotated with three connecting rods through connecting parts, and the three connecting rods are connected by the same rotating shaft. A slider is rotated at one end of the three connecting rods, and a docking block is fixed on one side of the fixed plate, and a closed airbag is provided between the docking blocks.

[0010] Preferably, the slider slides in the hollow frames on both sides of the closed airbag, and the hollow frames on both sides of the closed airbag are equipped with dampers, and the output ends of the dampers are connected to the slider. An air pipe is provided through the inside of the closed airbag, and a gas tank is fixed on the top of the cabinet. The gas pipe passes through the cabinet and is connected to the gas tank.

[0011] Preferably, the stabilizing assembly includes a docking buckle 1 and a docking buckle 2, wherein the docking buckle 1 is fixed on the top of the mounting plate, and the docking buckle 2 slides on the outer wall of the cabinet, and a docking rod is provided between the docking buckle 1 and the docking buckle 2.

[0012] Preferably, a fixed column is fixed inside the cabinet, and the outer wall of the fixed column is sleeved with a spring. The docking buckle 2 slides on the outer wall of the fixed column, one end of the spring is fixed inside the cabinet, and the other end of the spring is fixed to the top of the docking buckle 2.

[0013] Preferably, the positioning mechanism includes motor three, which is arranged inside the mounting plate, and a gear three is fixed to the output end of the motor three, and the gear three rotates inside the mounting plate, and a rack two slides inside the mounting plate, and the gear three is meshed with the rack two, and a fixed pile is fixed at one end of the rack two, and the fixed pile slides inside the mounting plate, and the gear three rotates inside the mounting plate, and a rack two slides inside the mounting plate, and the gear three is meshed with the rack two, and a fixed pile is fixed at one end of the rack two, and the fixed pile slides inside the mounting plate.

[0014] The present invention provides a rapid pile foundation bearing capacity detector for use on engineering sites. It has the following beneficial effects:

[0015] 1. The present invention achieves the effect of finely adjusting the position of the required pile foundation for inspection through the coordination between the gear ring, gear 1 and rack 1, thereby solving the problem of large discrepancies between the inspection results and the actual results due to position deviation during pile foundation inspection, thereby improving the inspection accuracy of the equipment.

[0016] 2. The present invention achieves the effect of shock absorption and buffering of the equipment in a complex construction site environment through the coordination between the closed airbag, the air pipe and the damper, and the shock absorption coefficient can be adjusted according to the actual situation. It solves the problem that the complex road conditions on the construction site and the long-term displacement and bumping may cause certain errors in the subsequent positioning of the pile foundation of the equipment, thereby improving the continuous operation capability of the equipment.

[0017] 3. The present invention achieves the effect of adaptive fixation after the equipment positioning is completed through the cooperation between the gear three, the fixed shape and the rack two components, solves the problem that the position deviation of the equipment after positioning is completed due to detection, which is not conducive to multiple detection and comparison of values, and improves the stability of the equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the present invention;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 Schematic diagram of the internal structure of the fixing ring of the present invention;

[0021] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0022] Figure 5 It is a three-dimensional side view of the present invention;

[0023] Figure 6 This is a schematic diagram of the internal structure of the cabinet of the present invention;

[0024] Figure 7 Schematic diagram of the shock absorbing mechanism of the present invention;

[0025] Figure 8 It is a schematic diagram of the internal structure of the mounting plate of the present invention.

[0026] Among them, 1. cabinet; 2. support leg; 3. mounting plate; 4. crawler track; 5. fixing ring; 6. limit frame; 7. limit buckle; 8. inner ring; 9. gear ring; 10. gear one; 11. rack one; 12. positioning plate; 13. motor one; 14. limit plate; 15. cylinder one; 16. docking buckle one; 17. docking buckle two; 18. docking rod; 19. fixing column; 20. spring; 21. motor two; 22. gear two; 23. connecting rod one; 24. connecting rod two; 25. docking plate; 26. fixing plate; 27. docking block; 28. connecting rod three; 29. ​​slider; 30. damper; 31. closed airbag; 32. gas pipe; 33. gas tank one; 34. gas tank two; 35. pressure detection component; 36. motor three; 37. gear three; 38. rack two; 39. fixing pile. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments 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.

[0028] Please see the attached Figure 1 -Attached Figure 4, an embodiment of the present invention provides a rapid pile foundation bearing capacity tester for engineering sites, including a cabinet 1, a left-right symmetrical support leg 2 is slidably provided inside the cabinet 1, a mounting plate 3 is installed on one side of the support leg 2, a crawler 4 is installed on the bottom of the mounting plate 3, a limit frame 6 is fixed inside the cabinet 1, a fixed ring 5 is slidably provided on the outer wall of the limit frame 6, a limit buckle 7 is installed at one end of the limit frame 6 to limit the displacement range of the fixed ring 5, an inner ring 8 is fixed inside the fixed ring 5, a gear ring 9 is rotated inside the inner ring 8, a gear 10 distributed in a ring array is rotated inside the fixed ring 5, the gear 10 is meshed with the gear ring 9, and the fixed ring 5 slides inside. Racks 11 are distributed in a ring array, and the racks 11 and gears 10 are meshed with each other. A motor 13 is provided inside the inner ring 8, and the output end of the motor 13 is connected to a gear 10. A positioning plate 12 is fixed to one end of the rack 11. Push-pull components are installed on both sides of the fixed ring 5. A lifting and shock-absorbing mechanism is provided between the cabinet 1 and the support leg 2. A positioning mechanism is installed inside the mounting plate 3. A stabilizing component is provided between the cabinet 1 and the mounting plate 3. A pressure detection component 35 is installed at the bottom of the cabinet 1. A gas tank 2 34 is provided on the top of the cabinet 1. The gas tank 2 34 and the pressure detection component 35 are connected by an air pipe.

[0029] The push-pull assembly includes a limit plate 14, which is fixed on both sides of the fixing ring 5. The limit plate 14 slides inside the cabinet 1. A cylinder 15 is provided inside the cabinet 1, and the output end of the cylinder 15 is fixed on the top of the limit plate 14.

[0030] Specifically, after the equipment completes height calibration, hydraulically driven cylinder 15 begins the radial positioning process. Its piston rod pushes the limit plate 14 to slide smoothly along the guide rail, driving the retaining ring 5 to move synchronously. During this process, the butt-joint latch 2 17 forms a physical limit, ensuring controllable sliding travel.

[0031] After the pile foundation is positioned in a circular pattern, Motor 13 drives the first set of Gears 10 through its output port, which begins to rotate. The precise meshing of Gears 10 with Ring Gear 9 ensures that the Ring Gear 9 evenly transmits power to the remaining Gears 10 distributed around the circumference during rotation, forming a synchronously rotating planetary gear train. This transmission method causes each Rack 11 to move equidistantly on the linear guide rail, pushing the positioning plate 12 into a centripetal clamping position.

[0032] When the positioning plate 12 contacts the surface of the pile foundation, the drive system of the crawler 4 dynamically fine-tunes the program according to the clamping effect. This dynamic adjustment mechanism ultimately ensures that the pressure detection component 35 can be accurately aligned with the mechanical center line of the pile foundation, providing an ideal measurement benchmark for subsequent detection.

[0033] Please see the attached Figure 5 -Attached Figure 6 , the lifting and shock absorbing mechanism includes a lifting component and a shock absorbing component;

[0034] The lifting assembly includes a motor 21, which is arranged inside the cabinet 1. A left-right symmetrical gear 22 rotates inside the cabinet 1. The output end of the motor 21 is connected to a gear 22. The gears 22 are each provided with a connecting rod 1 23 through a rotating shaft. The connecting rod 1 23 is rotated with a connecting rod 2 24 at one end away from the gear 2 22. The connecting rod 2 24 is rotated with a docking plate 25 at one end away from the connecting rod 1 23. The shock-absorbing assembly is arranged between the docking plate 25 and the support leg 2.

[0035] Specifically, once the detection system is precisely positioned at the target pile foundation via the hydraulic drive of track 4, its height adjustment system immediately enters operation. At this point, motor 21, through a precision reduction mechanism, implements bidirectional control over the coaxially mounted gear 2 22. When the driving gear 2 2 begins to rotate clockwise, the driven gear 2 22 exhibits precise counterclockwise synchronous motion. This symmetrical transmission allows the two connecting rods 1 23 to unfold in a coordinated fan-shaped manner, like a robotic arm, with the axis of gear 2 22 serving as the fulcrum.

[0036] As connecting rod 1 oscillates synchronously, connecting rod 2 24, which is hinged to it, experiences angular displacement. This geometric change is converted into a linear force on docking plate 25 through the universal joint structure at its end. With the airbag cushioning of the shock-absorbing assembly, this thrust is smoothly transmitted along the telescopic track of support leg 2, ultimately causing vertical displacement of cabinet 1. This multi-stage, coordinated adjustment process ensures that the central axis of retaining ring 5 forms a precise spatial correspondence with the pile foundation testing surface, creating ideal positioning conditions for subsequent pressure testing.

[0037] Please see the attached Figure 5 -Attached Figure 7 The shock-absorbing assembly includes a fixed plate 26, which is symmetrically distributed up and down. The chalk and docking plate 25 are connected to the support leg 2. The fixed plates 26 are rotated by a connecting rod 3 28 through a connecting piece. The connecting rods 3 28 are connected by the same rotating shaft. A slider 29 is rotated at one end of the connecting rod 3 28. A docking block 27 is fixed on one side of the fixed plate 26, and a closed airbag 31 is provided between the docking blocks 27.

[0038] The slider 29 slides in the hollow frames on both sides of the closed airbag 31. The hollow frames on both sides of the closed airbag 31 are installed with dampers 30. The output ends of the dampers 30 are connected to the slider 29. An air supply pipe 32 is provided inside the closed airbag 31. A gas tank 33 is fixed on the top of the cabinet 1. The gas supply pipe 32 runs through the cabinet 1 and is connected to the gas tank 33.

[0039] The stabilizing assembly includes a docking buckle 16 and a docking buckle 2 17. The docking buckle 16 is fixed to the top of the mounting plate 3, and the docking buckle 2 17 slides on the outer wall of the cabinet 1. A docking rod 18 is provided between the docking buckle 16 and the docking buckle 2 17.

[0040] A fixed column 19 is fixed inside the cabinet 1, and a spring 20 is sleeved on the outer wall of the fixed column 19. The docking buckle 17 slides on the outer wall of the fixed column 19. One end of the spring 20 is fixed inside the cabinet 1, and the other end of the spring 20 is fixed to the top of the docking buckle 17.

[0041] Specifically, when the equipment travels over rough terrain, the impact of the terrain absorbed by the tracks 4 is transmitted to the legs 2 through the supporting frame of the mounting plate 3. At this point, the parallelogram structure formed by the fixing plate 26 undergoes elastic deformation, which is first cushioned by the compressed air within the enclosed airbag 31. The airbag 31 forms a closed-loop system with the air tank 33 via a precision air valve. This system automatically adjusts the internal air pressure according to the vibration frequency, achieving dynamic stiffness compensation.

[0042] Under severe vibration conditions, when the displacement of the fixed plate 26 exceeds the airbag cushioning threshold, the lever effect of connecting rod 3 28 begins to emerge. The slider 29 at its end moves within the guide rail, triggering the viscous fluid energy dissipation mechanism of the damper 30, converting and dissipating kinetic energy. This two-stage cushioning design ensures the stability of the test instrument even when traversing gravel roads.

[0043] Please see the attached Figure 8 The positioning mechanism includes a motor 36, which is arranged inside the mounting plate 3. A gear 37 is fixed to the output end of the motor 36. The gear 37 rotates inside the mounting plate 3. A rack 2 38 slides inside the mounting plate 3. The gear 37 is meshed with the rack 2 38. A fixed pile 39 is fixed at one end of the rack 2 38. The fixed pile 39 slides inside the mounting plate 3. The gear 37 rotates inside the mounting plate 3. A rack 2 38 slides inside the mounting plate 3. The gear 37 is meshed with the rack 2 38. A fixed pile 39 is fixed at one end of the rack 2 38. The fixed pile 39 slides inside the mounting plate 3.

[0044] Specifically, after completing detection and positioning, the system enters the equipment stabilization phase. At this point, Motor 3 36 precisely rotates by driving Gear 3 37, converting this rotational motion into linear displacement of Rack 2 38 within the guide slot. A fixing stake 39, rigidly connected to Rack 2 38, then smoothly extends from the storage compartment of Mounting Plate 3. Its tip automatically switches operating mode based on geological conditions—using insertion in soft soil and manual switching to vacuum suction cup mode on hardened ground, creating an adaptive fixing solution.

[0045] When all four sets of fixed piles 39 are in place, motor 13 begins to reverse, and through the reverse meshing of gear 10 and ring gear 9, each rack 11 drives the positioning plate 12 to retract synchronously to a safe position, freeing up operating space for subsequent inspection operations. The entire recovery process uses a buffer design to avoid mechanical stress caused by component collisions.

[0046] Working principle: When it is necessary to carry out the bearing pressure test of the pile foundation, the equipment needs to be brought to the corresponding pile foundation position by driving the crawler 4 to start the test. First, according to the different required pile foundation heights, we will first drive the gear 2 22 on one side to rotate through the motor 2 21, and then the gear 2 22 will drive the gear 2 22 on the other side to rotate in the opposite direction, so that the two gears 22 will each drive the corresponding connecting rod 1 23 to rotate with the gear 2 22 as the center, thereby forcing the inclination angle of the connecting rod 2 24 to change, thereby producing a push-pull effect on the docking plate 25, thereby pushing the support leg 2 through the docking plate 25 and the shock-absorbing assembly, so that the height of the cabinet 1 changes, so that the fixing ring 5 can be smoothly placed above the pile foundation. After the height is adjusted and in place, the air Cylinder 15 starts to drive, so that the limit plate 14 drives the fixed ring 5 to move synchronously, and at the same time it is also restricted by the docking buckle 2 17, so that the sliding distance is limited and stable. After the fixed ring 5 sets the pile foundation, the motor 13 can be started to drive the gear 10 to rotate, so that the gear ring 9 will be driven by a gear 10 and start to rotate. The rotation of the gear ring 9 will drive the other gears 10 to rotate synchronously, so that the gear 10 synchronously drives the rack 11 to push the positioning plate 12 to touch the pile foundation. The position of the pile foundation cannot be changed at this time. As the rack 11 pushes the positioning plate 12, the entire equipment will be adjusted according to the touch result of the positioning plate 12 through the crawler 4, so that the corresponding bearing The pressure detection component 35 will be in the middle position of the pile foundation. At this time, the motor three 36 is driven to drive the gear three 37 to rotate, so that the motor three 36 drives the rack two 38 to slide. At this time, the fixed pile 39 and the rack two 38 are displaced synchronously, and then pushed out of the mounting plate 3, so as to be inserted into the corresponding construction site soil to fix the equipment. If it is a concrete ground, the tail vertebra at the bottom of the fixed pile 39 can be replaced with a suction cup to fix the position of the equipment. After the equipment is fixed, the gear one 10 can be driven in the reverse direction to retract the rack one 11 and the positioning plate 12. At this time, the pressure detection component 35 starts to press down on the pile foundation to detect it under the drive of the gas tank two 34, and because of the complex site environment of the construction site, the crawler 4 drives the entire equipment to run. When the distance between the fixed plates 26 is reduced, the connecting rod 3 28 pushes the slider 29 to slide, so that the damper 30 can buffer the impact force. In this way, the vibration impact force received by the equipment due to the complex construction site environment during movement is reduced through double buffering. At the same time, according to the specific severity of the environment, the air tank 1 33 can be used to increase or reduce the pressure in the closed air bag 31 through the air pipe 32 to change the shock absorption coefficient.At the same time, the corresponding docking rod 18 will also push the docking buckle 17 to a certain extent to slide along the fixing column 19 in the cabinet 1, and the corresponding spring 20 will be squeezed, thereby assisting in a stabilizing effect during shock absorption.

[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A rapid pile foundation bearing capacity detector for use on engineering sites, comprising a cabinet (1), characterized in that: The cabinet (1) has symmetrical support legs (2) sliding inside, and a mounting plate (3) is installed on one side of the support legs (2). A crawler (4) is installed on the bottom of the mounting plate (3). A limit frame (6) is fixed inside the cabinet (1), and a fixed ring (5) is slid on the outer wall of the limit frame (6). A limit buckle (7) is installed on one end of the limit frame (6) to limit the displacement range of the fixed ring (5). An inner ring (8) is fixed inside the fixed ring (5), and a gear ring (9) rotates inside the inner ring (8). A gear (10) distributed in a ring array rotates inside the fixed ring (5), and the gear (10) is meshed with the gear ring (9). A rack (11) distributed in a ring array slides inside the fixed ring (5). The rack (11) and the gear (10) are meshed with each other, a motor (13) is provided inside the inner ring (8), the output end of the motor (13) is connected to one of the gears (10), a positioning plate (12) is fixed to one end of the rack (11), push-pull components are installed on both sides of the fixed ring (5), a lifting and shock-absorbing mechanism is provided between the cabinet (1) and the support leg (2), a positioning mechanism is installed inside the mounting plate (3), a stabilizing component is provided between the cabinet (1) and the mounting plate (3), a pressure detection component (35) is installed at the bottom of the cabinet (1), and a gas storage tank (34) is provided on the top of the cabinet (1), and the gas storage tank (34) and the pressure detection component (35) are connected through an air pipe.

2. A rapid pile foundation bearing capacity detector for use on engineering sites according to claim 1, characterized in that: The push-pull assembly includes a limit plate (14), the limit plate (14) is fixed on both sides of the fixing ring (5), the limit plate (14) slides inside the cabinet (1), a cylinder (15) is provided inside the cabinet (1), and the output end of the cylinder (15) is fixed on the top of the limit plate (14).

3. A rapid pile foundation bearing capacity detector for use on engineering sites according to claim 1, characterized in that: The lifting and shock absorbing mechanism includes a lifting component and a shock absorbing component; The lifting assembly includes a second motor (21), the second motor (21) is arranged inside the cabinet (1), a left-right symmetrical gear (22) is rotated inside the cabinet (1), the output end of the second motor (21) is connected to one of the second gears (22), the second gears (22) are each provided with a connecting rod (23) through a rotating shaft, the connecting rod (23) is rotated at one end away from the second gear (22), the connecting rod (24) is rotated at one end away from the first connecting rod (23), the connecting rod (24) is rotated at one end away from the first connecting rod (23), and the shock absorbing assembly is arranged between the connecting plate (25) and the support leg (2).

4. A rapid pile foundation bearing capacity detector for use on engineering sites according to claim 1, characterized in that: The shock-absorbing assembly includes a fixed plate (26), the fixed plate (26) is symmetrically distributed in the upper and lower parts, the chalk and the docking plate (25) are connected to the support leg (2), the fixed plate (26) is rotated by a connecting rod three (28) through a connecting piece, the three connecting rods (28) are connected by the same rotating shaft, a slider (29) is rotated at one end of the three connecting rods (28), a docking block (27) is fixed on one side of the fixed plate (26), and a closed air bag (31) is provided between the docking blocks (27).

5. A rapid pile foundation bearing capacity detector for use on engineering sites according to claim 4, characterized in that: The slider (29) slides in the hollow frames on both sides of the closed airbag (31), and the hollow frames on both sides of the closed airbag (31) are both installed with dampers (30). The output ends of the dampers (30) are both connected to the slider (29). An air supply pipe (32) is provided through the inside of the closed airbag (31), and a gas storage tank (33) is fixed on the top of the cabinet (1). The gas supply pipe (32) passes through the cabinet (1) and is connected to the gas storage tank (33).

6. A rapid pile foundation bearing capacity detector for use on engineering sites according to claim 1, characterized in that: The stabilizing assembly comprises a first docking buckle (16) and a second docking buckle (17), wherein the first docking buckle (16) is fixed on the top of the mounting plate (3), and the second docking buckle (17) slides on the outer wall of the cabinet (1), and a docking rod (18) is provided between the first docking buckle (16) and the second docking buckle (17).

7. A rapid pile foundation bearing capacity detector for use on engineering sites according to claim 6, characterized in that: A fixed column (19) is fixed inside the cabinet (1), and a spring (20) is sleeved on the outer wall of the fixed column (19). The second docking buckle (17) slides on the outer wall of the fixed column (19), and one end of the spring (20) is fixed inside the cabinet (1), and the other end of the spring (20) is fixed on the top of the second docking buckle (17).

8. A rapid pile foundation bearing capacity detector for use on engineering sites according to claim 1, characterized in that: The positioning mechanism includes a motor three (36), the motor three (36) is arranged inside the mounting plate (3), a gear three (37) is fixed to the output end of the motor three (36), the gear three (37) rotates inside the mounting plate (3), a rack two (38) slides inside the mounting plate (3), the gear three (37) and the rack two (38) are meshed, a fixed pile (39) is fixed at one end of the rack two (38), the fixed pile (39) slides inside the mounting plate (3), the gear three (37) rotates inside the mounting plate (3), the rack two (38) slides inside the mounting plate (3), the gear three (37) and the rack two (38) are meshed, a fixed pile (39) is fixed at one end of the rack two (38), the fixed pile (39) slides inside the mounting plate (3),

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