A foundation bearing capacity testing instrument

Abstract

This invention belongs to the field of foundation testing, specifically a foundation bearing capacity testing instrument. It includes a drive vehicle, a lifting platform fixedly connected to the front end of the drive vehicle, an electric auger fixedly connected to the driving end of the lifting platform, a through-slot extending to the bottom of the drive vehicle, a testing cylinder fixedly connected to the inner side of the through-slot, a bottom cover fixedly connected to the bottom of the testing cylinder, and an open bottom surface of the bottom cover. The foundation bearing capacity testing instrument body is located in the middle of the inner side of the bottom cover, and a probe is fixedly connected to the bottom end of the foundation bearing capacity testing instrument body. An impact component and a fixing component are located inside the testing cylinder. With this design, the foundation bearing capacity test can be completed simply by placing the drive vehicle on the foundation and running it for a period of time, and it can be performed at night, saving working time and reducing manual labor.

Description

Technical Field

[0001] This invention belongs to the field of foundation testing, specifically a foundation bearing capacity testing instrument. Background Technology

[0002] The on-site bearing capacity testing instrument is used to test the bearing capacity, compression modulus, and liquid properties of road foundations, dam foundations, bridge foundations, tunnels, culverts, and civil engineering foundations. Before constructing buildings, the bearing capacity of the foundation must be tested, and construction can only proceed after the foundation has passed the tests.

[0003] In operation, a standard hammer of a certain mass is used to strike the piston at the top of the probe rod, pressing the conical probe into the soil through the drill rod. For each strike, the impact velocity measured by the sensor inside the piston is used by a calculator in the electronic recorder to calculate the penetration energy. At the same time, another recorder in the box records the depth of the conical probe's penetration. Based on these two data points, the dynamic resistance value of the conical probe can be immediately calculated using a formula, and then converted into the foundation bearing capacity.

[0004] Traditional testing instruments generally require manual operation. This involves drilling multiple measuring holes in a large foundation, manually inserting the probe at the bottom of the foundation bearing capacity tester into the measuring holes, and using a hammer to strike the sensor at the top of the foundation bearing capacity tester to obtain data. However, the foundations required for building construction are very wide, and the area to be tested is large, making manual operation time-consuming and labor-intensive.

[0005] Therefore, the present invention provides a foundation bearing capacity testing instrument. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A foundation bearing capacity testing instrument according to this invention includes a drive vehicle, a lifting platform fixedly connected to the front end of the drive vehicle, an electric auger fixedly connected to the driving end of the lifting platform, a through groove extending to the bottom of the drive vehicle in the middle, a testing cylinder fixedly connected to the inner side of the through groove, a bottom cover fixedly connected to the bottom end of the testing cylinder, the bottom surface of the bottom cover being open, a foundation bearing capacity testing instrument body disposed in the middle of the inner side of the bottom cover, a probe fixedly connected to the bottom end of the foundation bearing capacity testing instrument body, and an impact component and a fixing component disposed inside the testing cylinder. The impact component is used to repeatedly impact the foundation bearing capacity testing instrument body, and the fixing component is used to fix the foundation bearing capacity testing instrument body to slide stably up and down. In operation, traditional testing instruments generally require manual operation, not only requiring the drilling of multiple measuring holes in a large foundation area, but also manually inserting the probe at the bottom of the foundation bearing capacity testing instrument body into the measuring holes. The foundation bearing capacity tester uses a hammer to strike the sensor on top of the main body to generate data. However, the foundations required for building construction are very wide, and the area to be tested is large. Manual operation is time-consuming and labor-intensive. By using a drive vehicle to carry the foundation bearing capacity tester, which is equipped with a navigation module, the vehicle can travel a designated route. After the vehicle has traveled a certain distance, it stops, and an electric auger is started. The auger is lowered by a lifting platform to drill into the ground to form a measuring hole. Then, the drive vehicle is started again to move forward a predetermined distance, so that the bottom of the probe is above the measuring hole. Then, an impact component is used to apply impact force to the probe, and the foundation bearing capacity tester detects the value. The fixing component can pull the probe out of the soil after the probe has finished testing. With this setup, the foundation bearing capacity test can be completed simply by placing the drive vehicle on the foundation and running it for a period of time. It can also be done at night, which not only saves working time but also reduces manual labor.

[0008] Preferably, the fixing component includes two symmetrically arranged transmission frames, and two symmetrically arranged sliding grooves are opened on the inner wall of the detection cylinder. A guide rail is arranged on the inner side of the sliding groove, and a drive module is connected between the guide rail and the transmission frame. The outer side of the guide rail is connected to the foundation bearing capacity tester body near the bottom. During operation, after the impact test begins, the foundation bearing capacity tester body can be kept in the middle of the detection cylinder under the constraint of the two guide rails. After the impact test is completed, the two drive modules climb on the guide rails, and the transmission frame pulls the foundation bearing capacity tester body upward, thus completing the effect of the probe being pulled out of the soil, achieving the effect of reusability.

[0009] Preferably, the impact assembly includes a servo motor, which is fixedly connected to the outside of the detection cylinder. A winding roller is fixedly connected to the drive end of the servo motor. A friction table is rotatably connected to the end of the winding roller away from the servo motor. The friction table is fixedly connected to the detection cylinder. A connecting rope is fixedly connected to the outside of the winding roller. The bottom of the connecting rope is fixedly connected to the top sensor of the foundation bearing capacity tester body. An impact block is fixedly connected to the middle of the connecting rope. During operation, when the probe moves above the detection hole, the drive module is first used to drive the foundation bearing capacity tester body to sink as a whole, and at the same time, the drive module is turned off. At this time, the impact block and the foundation bearing capacity tester body sink together. The force testing instrument body fits snugly, and under the action of gravity, the instrument body presses the probe to the bottom of the testing hole. Then, the servo motor rotates half a turn, and under the pull of the connecting rope, the impact block rises a certain distance. After that, the servo motor stops working, and the impact block strikes the instrument body under the action of gravity, thus ensuring that the force of each impact is the same, which can effectively improve the accuracy of the test values. The friction table setting can provide a certain friction for the winding roller, preventing the winding roller from spitting out excess connecting rope and keeping the upper part of the connecting rope taut at all times. This ensures that the winding roller rises a certain height each time it rotates half a turn, ensuring sufficient impact force.

[0010] Preferably, the top of the sensor of the foundation bearing capacity tester is fixedly connected to an impact cover. The impact cover is semi-circular, and the impact block is spherical. During operation, in conjunction with the shape of the impact cover and the setting of the impact block, the impact block can stay stably on the impact cover when the connecting rope is slack. At the same time, when the impact block sinks and impacts, it can stably impact the impact cover, further ensuring the stability of the impact and making the test values ​​more accurate.

[0011] Preferably, the guide rail is arc-shaped, and the slide groove is also arc-shaped. Both the upper and lower ends of the guide rail are slidably connected to the slide groove. An electric cylinder is fixedly connected to the outside of the detection cylinder. The drive end of the electric cylinder is rotatably connected to one of the guide rails by a rotating shaft. During operation, after the probe is deeply inserted into the ground, manual operation can only force it out, which not only easily bends the probe but is also difficult to pull out. Mechanical forceful pulling can also easily damage the foundation bearing capacity tester body. With the electric cylinder, when pulling out, the electric cylinder is activated to perform high-frequency repetitive horizontal movement, thereby driving the guide rail to perform arc-shaped repetitive movement. Since the probe is located in the middle of the detection cylinder, the transmission frame drives the foundation bearing capacity tester body and the probe to rotate at high frequency, which can easily break through the soil and pull the probe outward. At the same time, due to the flexible connection of the connecting rope, the rotation will not affect the connection.

[0012] Preferably, the bottom end of the transmission frame has a triangular stabilizing groove. A connecting seat is provided on the side of the transmission frame near the foundation bearing capacity tester body, and a telescopic rod is fixedly connected between the connecting seat and the transmission frame. The top surface of the connecting seat is semi-circular. A fixing groove is provided on the outer side of the foundation bearing capacity tester body. An insertion rod is fixedly connected to one end of the connecting seat. During operation, in accordance with the shape of the connecting seat, when fixing the foundation bearing capacity tester body, the two telescopic rods are adjusted to lock the connecting seat into the bottom of the foundation bearing capacity tester body, while the insertion rod is inserted into the fixing groove. This arrangement not only firmly grips the foundation bearing capacity tester body and ensures the stability of the transmission process, but also allows for easy replacement and removal of the foundation bearing capacity tester body by simply shortening the telescopic rods.

[0013] Preferably, a cleaning box is fixedly connected to the inner wall of the base cover, and a fan is fixedly connected to the inner side of the cleaning box. An elastic friction bladder is provided on the side of the cleaning box near the probe. The friction bladder is hollow. During operation, when the foundation humidity is high and the soil viscosity is high, some soil can easily stick to the probe, causing problems in subsequent testing. Long-term adhesion can also easily cause the probe to rust. With the cleaning box, when the probe is pulled out, the fan in the cleaning box is activated to force outside air into the friction bladder, causing the friction bladder to expand and contact the outer surface of the probe. As the probe rotates at high speed, it can rub against the surface of the friction bladder to remove soil, thus ensuring the cleanliness of the probe during each test. After the test is completed, the fan is turned off, and the elastic friction bladder will self-contract, thus not affecting the normal insertion process of the probe.

[0014] Preferably, the cleaning box is inclined, with an opening on the side near the probe. A top box is slidably connected to one side of the cleaning box, and the end of the top box communicates with the friction bladder. Multiple sets of springs are fixedly connected between the top box and the cleaning box. During operation, with the arrangement of the cleaning box and the top box, after the fan is started, the air force will push the top box outward. Combined with the inclined arrangement of the cleaning box, the slid-out top box can fit more closely to the probe. Then the friction bladder will also expand. This arrangement allows the friction bladder to contact or even wrap around the probe with slight expansion, which not only increases the friction effect, but also allows the top box to spring back into the cleaning box under the action of the spring after the air pressure disappears, thus not affecting the normal sinking of the probe.

[0015] Preferably, the friction bladder has a friction pad at one end near the probe. The friction pad is made of porous fiber elastic material and is bent and attached to the surface of the friction bladder. During operation, the friction pad can more effectively rub the probe while protecting the friction bladder from being easily worn through, thus preventing air pressure leakage.

[0016] Preferably, a plurality of counterweight balls are fixedly connected to the outer surface of the friction bladder. The counterweight balls are made of solid metal. During operation, soil particles easily remain on the surface of the friction bladder and friction pad. With the counterweight balls, vibrations are generated when the vehicle is driven, causing the counterweight balls to swing and thus shaking the friction bladder. This effectively shakes off the soil on the outside, ensuring a long-term effective friction effect.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The foundation bearing capacity testing instrument of the present invention uses a drive vehicle to carry the instrument body. The drive vehicle is equipped with a navigation module, which allows the drive vehicle to travel a designated route. After the drive vehicle travels a certain distance, it stops and starts an electric auger. The auger is lowered by a lifting platform to drill into the ground to form a measuring hole. Then, the drive vehicle is started again to move forward a predetermined distance, allowing the bottom of the probe to move above the measuring hole. Then, an impact component is used to apply impact force to the probe. The bearing capacity testing instrument body detects the value. A fixing component can pull the probe out of the soil after the probe detection is completed. With this setting, the foundation bearing capacity test can be completed simply by placing the drive vehicle on the foundation and running it for a period of time. Moreover, it can be carried out at night, which not only saves working time but also reduces manual labor.

[0019] 2. The foundation bearing capacity testing instrument of the present invention, in combination with the shape of the impact shroud and the setting of the impact block, allows the impact block to stay stably on the impact shroud when the connecting rope is slack. At the same time, when the impact block sinks and impacts, it can stably impact the impact shroud, further ensuring the stability of the impact and making the test values ​​more accurate. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a first-view perspective perspective view of the detection cylinder of the present invention;

[0023] Figure 3 This is a second-view perspective perspective view of the detection cylinder of the present invention;

[0024] Figure 4 This is a first-view sectional view of the detection cylinder of the present invention;

[0025] Figure 5 This is a second-view sectional view of the detection cylinder of the present invention;

[0026] Figure 6 This is a perspective view of the transmission frame of the present invention;

[0027] Figure 7 This is a cross-sectional view of the cleaning box of the present invention;

[0028] In the diagram: 1. Drive vehicle; 2. Detection cylinder; 3. Lifting platform; 4. Electric auger; 5. Servo motor; 6. Guide rail; 7. Cleaning box; 8. Base cover; 9. Electric cylinder; 10. Winding roller; 11. Friction table; 12. Impact block; 13. Connecting rope; 14. Impact cover; 15. Foundation bearing capacity tester body; 16. Probe; 17. Fixing groove; 18. Rotating shaft; 19. Drive module; 20. Transmission frame; 21. Connecting seat; 22. Fan; 23. Spring; 24. Top box; 25. Friction bladder; 26. Counterweight ball. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] Example 1

[0031] like Figures 1 to 4As shown in the embodiment of the present invention, a foundation bearing capacity testing instrument includes a drive vehicle 1, a lifting platform 3, an electric auger drill 4, a foundation bearing capacity testing instrument body 15, and a probe 16. The lifting platform 3 is fixedly connected to the front end of the drive vehicle 1, and the electric auger drill 4 is fixedly connected to the driving end of the lifting platform 3. A through groove extending to the bottom is opened in the middle of the drive vehicle 1. A testing cylinder 2 is fixedly connected to the inner side of the through groove. A bottom cover 8 is fixedly connected to the bottom end of the testing cylinder 2. The bottom surface of the bottom cover 8 is open, and the inner side of the bottom cover 8... The bearing capacity testing instrument body 15 is located in the middle. A probe 16 is fixedly connected to the bottom end of the bearing capacity testing instrument body 15. An impact component and a fixing component are provided inside the testing cylinder 2. The impact component is used to repeatedly impact the bearing capacity testing instrument body 15, and the fixing component is used to fix the bearing capacity testing instrument body 15 to slide stably up and down. During operation, traditional testing instruments generally require manual operation. Not only do multiple measuring holes need to be drilled in the vast foundation, but the probe at the bottom of the bearing capacity testing instrument body 15 also needs to be manually moved. The probe 16 is inserted into the measuring hole, and a hammer is used to strike the sensor on the top of the foundation bearing capacity tester 15 to obtain data. However, the foundation required for building construction is very wide, and the area to be tested is large. Manual operation is time-consuming and labor-intensive. By using a drive vehicle 1 to carry the foundation bearing capacity tester 15, the drive vehicle 1 is equipped with a navigation module, which allows the drive vehicle 1 to travel a designated route. After the drive vehicle 1 moves a certain distance, it stops, and the electric auger 4 is started. Through the sinking of the lifting platform 3, the electric auger 4 is drilled into the ground to form a measuring hole. Then, the drive vehicle 1 is started again to move forward a predetermined distance, so that the bottom of the probe 16 moves above the measuring hole. Then, the impact component is used to apply impact force to the probe 16, and the value is detected by the foundation bearing capacity tester 15. The fixing component can pull the probe 16 out of the soil after the probe 16 has finished testing. With this setting, the foundation bearing capacity test can be completed by simply placing the drive vehicle 1 on the foundation and running it for a period of time. It can also be carried out at night, which not only saves working time but also reduces manual labor.

[0032] like Figures 2 to 5As shown, the device includes a chute, a transmission frame 20, a drive module 19, and a guide rail 6. The fixing assembly includes two symmetrically arranged transmission frames 20. Two symmetrically arranged chutes are opened on the inner wall of the detection cylinder 2. The guide rail 6 is arranged on the inner side of the chute. The drive module 19 is connected between the guide rail 6 and the transmission frame 20. The outer side of the guide rail 6 is connected to the foundation bearing capacity detector body 15 near the bottom. During operation, after the impact operation begins, the foundation bearing capacity detector body 15 can be kept in the middle of the detection cylinder 2 under the constraint of the two guide rails 6. After the impact test is completed, the two drive modules 19 climb on the guide rail 6, and the transmission frame 20 pulls the foundation bearing capacity detector body 15 upward, thus completing the effect of the probe 16 being pulled out of the soil, achieving the effect of reusability.

[0033] like Figures 3 to 5 As shown, the instrument includes a winding roller 10, an impact block 12, and a connecting rope 13. The impact assembly includes a servo motor 5, which is fixedly connected to the outside of the detection cylinder 2. The driving end of the servo motor 5 is fixedly connected to the winding roller 10. A friction table 11 is rotatably connected to the end of the winding roller 10 away from the servo motor 5. The friction table 11 is fixedly connected to the detection cylinder 2. The connecting rope 13 is fixedly connected to the outside of the winding roller 10. The bottom of the connecting rope 13 is fixedly connected to the top sensor of the foundation bearing capacity testing instrument body 15. The impact block 12 is fixedly connected to the middle of the connecting rope 13. During operation, when the probe 16 moves above the detection hole, the driving module 19 is used to drive the foundation bearing capacity testing instrument body 15 to sink as a whole, and the driving module 19 is turned off at the same time. At this time, the impact block 12 is in contact with the foundation bearing capacity tester body 15. Under the action of gravity, the foundation bearing capacity tester body 15 will press the probe 16 to the bottom of the test hole. Then, the servo motor 5 is started to rotate half a turn. Under the pull of the connecting rope 13, the impact block 12 rises a certain distance. Then the servo motor 5 stops working. The impact block 12 strikes the foundation bearing capacity tester body 15 under the action of gravity, so that the force of each impact is the same, which can effectively improve the accuracy of the test value. The friction table 11 can provide a certain friction to the winding roller 10, so that the winding roller 10 will not spit out the excess connecting rope 13, and always keep the upper part of the connecting rope 13 taut, so that the winding roller 10 can rise a certain height each time it rotates half a turn, ensuring that the impact force is sufficient.

[0034] like Figures 4 to 5As shown, the instrument includes a semi-circular impact cover 14 and a spherical impact block 12. The impact cover 14 is fixedly connected to the top of the sensor of the foundation bearing capacity tester body 15. The impact cover 14 is semi-circular and the impact block 12 is spherical. During operation, in combination with the shape of the impact cover 14 and the arrangement of the impact block 12, when the connecting rope 13 is slack, the impact block 12 can stay stably on the impact cover 14. At the same time, when the impact block 12 sinks and impacts, it can stably impact the impact cover 14, further ensuring the stability of the impact and making the test values ​​more accurate.

[0035] like Figures 2 to 5 As shown, the instrument includes an electric cylinder 9 and a rotating shaft 18. The guide rail 6 is arc-shaped, and the slide groove is also arc-shaped. Both the upper and lower ends of the guide rail 6 are slidably connected to the slide groove. The electric cylinder 9 is fixedly connected to the outside of the detection cylinder 2. The driving end of the electric cylinder 9 is rotatably connected to one of the guide rails 6 via the rotating shaft 18. During operation, after the probe 16 is deeply inserted into the ground, manual operation can only force it out, which not only easily bends the probe 16 but also makes it difficult to pull it out. Mechanical forceful pulling can also easily damage the body 15 of the foundation bearing capacity detector. With the electric cylinder 9, when pulling out, the electric cylinder 9 is activated to perform high-frequency repetitive horizontal movement, thereby driving the guide rail 6 to perform arc-shaped repetitive movement. Since the probe 16 is located in the middle of the detection cylinder 2, the transmission frame 20 drives the body 15 of the foundation bearing capacity detector and the probe 16 to rotate at high frequency, which can easily break through the soil and pull the probe 16 outward. At the same time, due to the flexible connection of the connecting rope 13, the rotation will not affect the connection.

[0036] like Figures 5 to 6 As shown, the transmission frame 20 includes a connecting seat 21, a telescopic rod, an insertion rod, and a fixing groove 17. A triangular stabilizing groove is provided at the bottom of the transmission frame 20. The connecting seat 21 is located on the side of the transmission frame 20 near the foundation bearing capacity testing instrument body 15, and a telescopic rod is fixedly connected between the connecting seat 21 and the transmission frame 20. The top surface of the connecting seat 21 is semi-circular. A fixing groove 17 is provided on the outer side of the foundation bearing capacity testing instrument body 15. An insertion rod is fixedly connected to one end of the connecting seat 21. During operation, in accordance with the shape of the connecting seat 21, when fixing the foundation bearing capacity testing instrument body 15, the two telescopic rods are adjusted to lock the connecting seat 21 into the bottom of the foundation bearing capacity testing instrument body 15, while simultaneously inserting the insertion rod into the fixing groove 17. This configuration not only firmly grips the foundation bearing capacity testing instrument body 15, ensuring stability during transmission, but also allows for easy replacement and removal of the foundation bearing capacity testing instrument body 15 by simply shortening the telescopic rod.

[0037] like Figure 7As shown, a cleaning box 7 is fixedly connected to the inner wall of the base cover 8, and a fan 22 is fixedly connected to the inner side of the cleaning box 7. An elastic friction bladder 25 is provided on the side of the cleaning box 7 near the probe 16. The friction bladder 25 is hollow. During operation, when the foundation humidity is high and the soil viscosity is high, some soil is easy to stick to the probe 16, causing problems in subsequent testing. Long-term adhesion can also easily cause the probe 16 to rust. With the setting of the cleaning box 7, when the probe 16 is pulled out, the fan 22 in the cleaning box 7 is turned on to force outside air into the friction bladder 25, causing the friction bladder 25 to expand and contact the outer surface of the probe 16. As the probe 16 rotates at high speed, it can rub against the surface of the friction bladder 25 to remove soil, thus ensuring the cleanliness of the probe 16 during each test. After the test is completed, the fan 22 is turned off, and the elastic friction bladder 25 will self-contract, thus not affecting the normal insertion process of the probe 16.

[0038] like Figure 7 As shown, the cleaning box 7 is inclined, and the side of the cleaning box 7 near the probe 16 is open. A top box 24 is slidably connected to one side of the cleaning box 7. The end of the top box 24 is connected to the friction bag 25. Multiple sets of springs 23 are fixedly connected between the top box 24 and the cleaning box 7. During operation, in conjunction with the arrangement of the cleaning box 7 and the top box 24, after the fan 22 is started, the wind force will push the top box 24 outward. With the inclined arrangement of the cleaning box 7, the slid-out top box 24 can fit more closely to the probe 16. Then the friction bag 25 will also expand. This arrangement allows the friction bag 25 to slightly expand to contact or even wrap around the probe 16, which not only increases the friction effect, but also, after the air pressure disappears, the top box 24 rebounds and retracts into the cleaning box 7 under the action of the spring 23, which will not affect the normal sinking operation of the probe 16.

[0039] Example 2

[0040] like Figure 7 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the friction bladder 25 is provided with a friction pad at one end near the probe 16. The friction pad is a porous fiber elastic material and is bent and attached to the surface of the friction bladder 25. During operation, with the setting of the friction pad, the probe 16 can be rubbed more effectively, while protecting the friction bladder 25 from being easily worn out, which would lead to air pressure leakage.

[0041] Multiple counterweight balls 26 are fixedly connected to the outer surface of the friction bladder 25. The counterweight balls 26 are made of solid metal. During operation, the soil rubbed off can easily remain on the surface of the friction bladder 25 and the friction pad. With the counterweight balls 26, vibration will occur when the drive vehicle 1 moves, and the counterweight balls 26 will swing, thereby causing the friction bladder 25 to shake. This can effectively shake off the soil on the outside and ensure a long-term effective friction effect.

[0042] Traditional testing instruments typically require manual operation. This involves drilling multiple measuring holes in a large foundation, manually inserting the probe 16 from the bottom of the instrument body 15 into these holes, and then striking the sensor on top of the instrument body 15 with a hammer to obtain data. However, the foundations required for building construction are very large, and the area to be tested is substantial, making manual operation time-consuming and labor-intensive. By using a drive vehicle 1 to carry the instrument body 15, equipped with a navigation module, the instrument body 15 can be guided along a designated route. After the drive vehicle 1 travels a certain distance and stops, the electric auger 4 is activated, and the lifting platform 3 lowers the auger 4 to drill... The probe 16 is driven into the ground to form a measuring hole. Then, the drive vehicle 1 is restarted and advanced a predetermined distance, moving the bottom of the probe 16 above the measuring hole. An impact component is then used to apply impact force to the probe 16, and the value is detected by the foundation bearing capacity detector body 15. A fixing component allows the probe 16 to be pulled out of the soil after the measurement is completed. With this setup, the foundation bearing capacity test can be completed simply by placing the drive vehicle 1 on the foundation and running it for a period of time, and it can be done at night, saving working time and reducing manual labor. After the impact test begins, the foundation bearing capacity detector body 15 is kept in the middle of the measuring cylinder 2 by the two guide rails 6. After the impact test is completed, the value is detected by... Two drive modules 19 climb on the guide rail 6, pulling the foundation bearing capacity tester body 15 upwards via the transmission frame 20, thus achieving the effect of the probe 16 being pulled out of the soil, achieving a reusable effect. When the probe 16 moves above the test hole, the drive modules 19 first drive the foundation bearing capacity tester body 15 to sink as a whole, while simultaneously turning off the drive modules 19. At this time, the impact block 12 is in contact with the foundation bearing capacity tester body 15, and the foundation bearing capacity tester body 15 will press the probe 16 to the bottom of the test hole under the action of gravity. Then, the servo motor 5 is started to rotate half a turn, and under the pull of the connecting rope 13, the impact block 12 rises a certain distance. After that, the servo motor 5 stops working, and the impact block 12, under the action of gravity... The impact on the foundation bearing capacity tester body 15 ensures that the force of each impact is the same, which can effectively improve the accuracy of the test values. The friction table 11 provides a certain friction to the winding roller 10, preventing the winding roller 10 from spitting out excess connecting rope 13 and keeping the upper part of the connecting rope 13 taut. This allows the winding roller 10 to rise a certain height each time it rotates half a turn, ensuring sufficient impact force. With the shape of the impact cover 14 and the setting of the impact block 12, when the connecting rope 13 is slack, the impact block 12 can stay stably on the impact cover 14. At the same time, when the impact block 12 sinks and impacts, it can stably impact the impact cover 14, further ensuring the stability of the impact and making the test values ​​more accurate.After the probe 16 is deeply inserted into the ground, manual extraction is not only difficult but also prone to bending and damage. Mechanical extraction can also damage the foundation bearing capacity testing instrument body 15. However, with the electric cylinder 9, during extraction, the cylinder moves horizontally at high frequency, causing the guide rail 6 to move in an arc-like motion. Since the probe 16 is located in the middle of the testing cylinder 2, the transmission frame 20 drives the foundation bearing capacity testing instrument body 15 and the probe 16 to rotate at high frequency, easily breaking through the soil and pulling the probe 16 outwards. The flexible connection of the connecting rope 13 ensures that rotation does not affect the connection. Furthermore, the shape of the connecting seat 21, combined with the fixed foundation bearing capacity... When the bearing capacity testing instrument body 15 is being removed, the connecting seat 21 is secured to the bottom of the bearing capacity testing instrument body 15 by adjusting the two telescopic rods, while the insertion rod is inserted into the fixing groove 17. This setup not only securely holds the bearing capacity testing instrument body 15, ensuring stability during transmission, but also allows for easy replacement and removal by simply shortening the telescopic rods when replacing the bearing capacity testing instrument body 15. When the foundation moisture is high and the soil viscosity is high, some soil may easily adhere to the probe 16, causing problems in subsequent testing. Long-term adhesion can also cause the probe 16 to rust. To address this, the cleaning box 7 is equipped with a fan 22 that activates when the probe 16 is pulled out, cleaning the probe 16. Outside air is forced into the friction bladder 25, causing it to expand and contact the outer surface of the probe 16. As the probe 16 rotates at high speed, it rubs against the surface of the friction bladder 25, removing soil and ensuring the cleanliness of the probe 16 during each test. After the test, the blower 22 is turned off, and the elastic friction bladder 25 retracts, thus not affecting the normal insertion process of the probe 16. In conjunction with the cleaning box 7 and the top box 24, after the blower 22 is started, the airflow pushes the top box 24 outwards. Combined with the tilting design of the cleaning box 7, the sliding top box 24 can fit more closely to the probe 16. The friction bladder 25 then expands as well. This design allows the friction bladder 25 to... With slight expansion, the probe 16 can be contacted or even wrapped, which not only increases the friction effect, but also ensures that after the air pressure disappears, the top box 24 rebounds and retracts into the cleaning box 7 under the action of the spring 23, thus not affecting the normal sinking operation of the probe 16. Combined with the friction pad, it can more effectively rub the probe 16 while protecting the friction bladder 25 from easy wear and tear, preventing air pressure leakage. Since soil residue easily remains on the surface of the friction bladder 25 and friction pad, the counterweight ball 26, when the drive vehicle 1 moves, will cause vibration, and the counterweight ball 26 will swing, thereby causing the friction bladder 25 to shake, effectively shaking off the outer soil and ensuring long-term effective friction.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foundation bearing capacity testing instrument, characterized in that: The device includes a drive vehicle (1), a lifting platform (3) fixedly connected to the front end of the drive vehicle (1), an electric auger drill (4) fixedly connected to the driving end of the lifting platform (3), a through groove extending to the bottom in the middle of the drive vehicle (1), a detection cylinder (2) fixedly connected to the inner side of the through groove, a bottom cover (8) fixedly connected to the bottom end of the detection cylinder (2), the bottom surface of the bottom cover (8) being open, a foundation bearing capacity detector body (15) being provided in the middle of the inner side of the bottom cover (8), a probe (16) fixedly connected to the bottom end of the foundation bearing capacity detector body (15), an impact component and a fixing component being provided inside the detection cylinder (2), the impact component being used to repeatedly impact the foundation bearing capacity detector body (15), and the fixing component being used to fix the foundation bearing capacity detector body (15) to slide up and down stably; a navigation module is provided inside the drive vehicle (1). The fixed component includes two symmetrically arranged transmission frames (20), and two symmetrically arranged sliding grooves are opened on the inner wall of the detection cylinder (2). A guide rail (6) is provided on the inner side of the sliding groove. A drive module (19) is connected between the guide rail (6) and the transmission frame (20). The outer side of the guide rail (6) is connected to the foundation bearing capacity tester body (15) near the bottom. The impact assembly includes a servo motor (5), which is fixedly connected to the outside of the detection cylinder (2). A winding roller (10) is fixedly connected to the drive end of the servo motor (5). A friction table (11) is rotatably connected to the end of the winding roller (10) away from the servo motor (5). The friction table (11) is fixedly connected to the detection cylinder (2). A connecting rope (13) is fixedly connected to the outside of the winding roller (10). The bottom of the connecting rope (13) is fixedly connected to the top sensor of the foundation bearing capacity detector body (15). An impact block (12) is fixedly connected to the middle of the connecting rope (13). The guide rail (6) is arc-shaped, and the slide groove is also arc-shaped. Both the upper and lower ends of the guide rail (6) are slidably connected to the slide groove. An electric cylinder (9) is fixedly connected to the outside of the detection cylinder (2). The driving end of the electric cylinder (9) is rotatably connected to one of the guide rails (6) by a rotating shaft (18).

2. The foundation bearing capacity testing instrument according to claim 1, characterized in that: The top of the sensor of the foundation bearing capacity tester body (15) is fixedly connected to an impact cover (14), which is semi-circular in shape, and the impact block (12) is spherical in shape.

3. The foundation bearing capacity testing instrument according to claim 1, characterized in that: The bottom end of the transmission frame (20) is provided with a triangular stabilizing groove. A connecting seat (21) is provided on the side of the transmission frame (20) near the foundation bearing capacity tester body (15). A telescopic rod is fixedly connected between the connecting seat (21) and the transmission frame (20). The top surface of the connecting seat (21) is semi-circular. A fixing groove (17) is provided on the outer side of the foundation bearing capacity tester body (15). An insertion rod is fixedly connected to one end of the connecting seat (21).

4. A foundation bearing capacity testing instrument according to claim 3, characterized in that: A cleaning box (7) is fixedly connected to the inner wall of the bottom cover (8), and a fan (22) is fixedly connected to the inner side of the cleaning box (7). An elastic friction bag (25) is provided on the side of the cleaning box (7) near the probe (16), and the friction bag (25) is hollow.

5. A foundation bearing capacity testing instrument according to claim 4, characterized in that: The cleaning box (7) is inclined and has an opening on the side of the cleaning box (7) near the probe (16). A top box (24) is slidably connected to one side of the cleaning box (7). The end of the top box (24) is connected to the friction bag (25). Multiple sets of springs (23) are fixedly connected between the top box (24) and the cleaning box (7).

6. A foundation bearing capacity testing instrument according to claim 5, characterized in that: The friction pad is provided at one end of the friction bladder (25) near the probe (16). The friction pad is made of porous fiber elastic material and is bent and attached to the surface of the friction bladder (25).

7. A foundation bearing capacity testing instrument according to claim 6, characterized in that: Multiple counterweight balls (26) are fixedly connected to the outer surface of the friction bladder (25), and the counterweight balls (26) are made of solid metal material.

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