Foundation bearing capacity detection device

Abstract

The utility model discloses a foundation bearing capacity detection device, which relates to the technical field of foundation bearing capacity detection, and comprises a base, a detection insertion rod mechanism and a heavy hammer mechanism, a positioning unit, a limiting unit and a guide unit are fixedly arranged on the base, through holes are arranged on the base and the limiting unit, the detection insertion rod mechanism is arranged in the through holes, and the heavy hammer mechanism is arranged on the guide unit. The heavy hammer mechanism is slidably installed on the detection insertion rod mechanism and the guide unit. The device has the beneficial effects that through cooperative work of a three-jaw chuck mechanism, an electric control telescopic mechanism, a damping assembly, a tilt angle sensor and the like in the limiting unit, accurate limiting, buffering and damping and real-time deflection monitoring of the detection insertion rod mechanism are achieved, damage of vibration to the detection insertion rod mechanism is reduced, automatic deviation correction can be conducted on the detection insertion rod mechanism, and the detection efficiency is improved. Deflection of the detection insertion rod mechanism in the detection process is effectively reduced, the stability of the detection insertion rod mechanism is improved, and the accuracy and reliability of a detection result are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of foundation bearing capacity testing technology, and in particular to a foundation bearing capacity testing device. Background Technology

[0002] Foundation bearing capacity is the potential for bearing load per unit area of ​​the foundation as the load increases. Under load, the foundation will deform. In civil engineering surveying, foundation bearing capacity testing is particularly important to provide support for subsequent construction data. There are many methods for foundation bearing capacity testing, such as plate load test, standard penetration test, dynamic penetration test, and static penetration test.

[0003] A search revealed that Chinese patent application CN219908869U discloses a foundation bearing capacity testing device, which mainly aims to reduce the labor intensity of workers.

[0004] Compared with existing technologies in related fields, traditional foundation bearing capacity testing devices are prone to problems such as the test rod deflection when impacted by a heavy hammer during the testing process, and insufficient overall stability of the device, which leads to deviations in the accuracy of the test results. Utility Model Content

[0005] The purpose of this invention is to provide a foundation bearing capacity testing device in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A foundation bearing capacity testing device includes a base, a testing rod mechanism, and a counterweight mechanism. A positioning unit, a limiting unit, and a guiding unit are fixedly installed on the base. The base and the limiting unit are provided with through holes. The testing rod mechanism is installed in the through holes, and the counterweight mechanism is slidably installed on the testing rod mechanism and the guiding unit.

[0008] The limiting unit includes a three-jaw chuck mechanism and a limiting frame. The three-jaw chuck mechanism is fixedly mounted on the base. A through hole is provided in the center of the three-jaw chuck mechanism. Three jaws are fixedly mounted on the drive component of the three-jaw chuck mechanism. An electrically controlled telescopic mechanism is fixedly mounted on each of the three jaws. The electrically controlled telescopic mechanism on each jaw is arranged vertically. A movable frame is rotatably mounted on the telescopic end of the electrically controlled telescopic mechanism. A damping component is fixedly mounted on the movable frame. The limiting frame is rotatably mounted on the damping component. An tilt sensor is fixedly mounted on the limiting frame.

[0009] Furthermore, the damping assembly includes damping rods and springs. There are two damping rods in total, which are mounted on the movable frame. The telescopic ends of the damping rods are rotatably connected to the limiting frame, and the springs are sleeved on the damping rods.

[0010] Furthermore, a distance measuring sensor is fixedly installed on the side of the movable frame corresponding to the claw, and the distance measuring sensor is located on the outside of the two electrically controlled telescopic mechanisms.

[0011] Furthermore, ball bearings are rotatably arranged on the side of the limit frame corresponding to the detection rod mechanism.

[0012] Furthermore, the positioning unit includes a spiral drill rod, which is installed on both sides of the upper surface of the base by a threaded connection, and a turntable is fixedly installed at the upper end of the spiral drill rod.

[0013] Furthermore, the guide unit includes a bracket, which is fixedly installed on the upper surface of the base and located on both sides of the three-jaw chuck mechanism. A slide rod is fixedly installed on the bracket, and the slide rod is slidably connected to the counterweight mechanism.

[0014] Furthermore, a scraper ring is fixedly installed inside the through hole; the scraper ring is an elastic ring.

[0015] The advantages compared to existing technologies are as follows:

[0016] 1. Through the coordinated operation of the three-jaw chuck mechanism, electrically controlled telescopic mechanism, damping components, and tilt sensor in the limiting unit, precise limiting, buffering and shock absorption, and real-time monitoring of deviation of the detection rod mechanism are achieved. This reduces the damage of vibration to the detection rod mechanism and enables automatic correction of deviation, effectively reducing deviation during the detection process, improving the stability of the detection rod mechanism, and ensuring the accuracy and reliability of the detection results.

[0017] 2. During the testing process, the base is fixed by the auger drill rod to ensure that the entire testing device will not shift during the testing process, providing a stable foundation for accurate testing and improving the accuracy and reliability of the testing. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the first isometric structure of the foundation bearing capacity testing device described in this utility model;

[0020] Figure 2 This utility model describes a foundation bearing capacity testing device. Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 3This is a schematic diagram of the second isometric structure of the foundation bearing capacity testing device described in this utility model;

[0022] Figure 4 This utility model describes a foundation bearing capacity testing device. Figure 3 Enlarged structural diagram at point B;

[0023] Figure 5 This is a partial structural schematic diagram of the foundation bearing capacity testing device described in this utility model;

[0024] Figure 6 This is a schematic diagram of the third isometric structure of the foundation bearing capacity testing device described in this utility model.

[0025] The annotations in the attached figures are explained as follows:

[0026] 1. Base; 2. Detection rod mechanism; 301. Three-jaw chuck mechanism; 302. Jaw; 303. Electrically controlled telescopic mechanism; 304. Distance sensor; 305. Movable frame; 306. Damping rod; 307. Spring; 308. Tilt sensor; 309. Limit frame; 310. Ball bearing; 401. Turntable; 402. Spiral drill rod; 5. Bracket; 6. Slide rod; 7. Counterweight mechanism; 8. Through hole; 9. Scraper ring. Detailed Implementation

[0027] like Figures 1-6 As shown, a foundation bearing capacity testing device includes a base 1, a testing rod mechanism 2, and a hammer mechanism 7. A positioning unit, a limiting unit, and a guiding unit are fixedly installed on the base 1. A through hole 8 is provided on the base 1 and the limiting unit. The testing rod mechanism 2 is installed within the through hole 8. The hammer mechanism 7 is slidably installed on the testing rod mechanism 2 and the guiding unit. The base 1 is placed at the location to be tested, so that the through hole 8 corresponds to the testing position. The positioning unit fixes the base 1, and the testing rod mechanism 2 is installed within the through hole 8. The limiting unit limits and guides the lower end of the testing rod mechanism 2, and the guiding unit guides the hammer mechanism 7. The hammer mechanism 7 applies a force to the testing rod mechanism 2, causing the testing rod mechanism 2 to insert into the ground. The bearing capacity of the foundation is tested by the hammering force borne by the testing rod mechanism 2 and the depth of penetration into the foundation.

[0028] like Figures 1-5As shown, the limiting unit includes a three-jaw chuck mechanism 301 and a limiting frame 309. The three-jaw chuck mechanism 301 is fixedly mounted on the base 1. A through hole 8 is provided through the center of the three-jaw chuck mechanism 301. Three jaws 302 are fixedly mounted on the driving component of the three-jaw chuck mechanism 301. An electrically controlled telescopic mechanism 303 is fixedly mounted on each of the three jaws 302. The electrically controlled telescopic mechanisms 303 on each jaw 302 are arranged vertically. A movable frame 305 is rotatably mounted on the telescopic end of the electrically controlled telescopic mechanism 303. A damping component is fixedly mounted on the movable frame 305. The limiting frame 309 is rotatably mounted on the damping component. An tilt sensor 309 is fixedly mounted on the limiting frame 309. 8. After the detection rod mechanism 2 is installed into the through hole 8, the three jaws 302 are moved by the drive component of the three-jaw chuck mechanism 301. The jaws 302 move the limit frame 309 through the electric telescopic mechanism 303, the movable frame 305, and the damping component, adjusting the position of the limit frame 309 so that the limit frame 309 can adjust the limiting position according to the diameter of the detection rod mechanism 2. The limit frame 309 positions and clamps the detection rod mechanism 2, improving stability. During the detection process, the tilt angle of the limit frame 309 is monitored by the tilt sensor 308. When the detection rod mechanism 2 is impacted by the counterweight mechanism 7 and enters the ground for detection, the detection rod mechanism 2... The impact force and the opposing force from the ground will cause vibration and deviation. When the detection rod mechanism 2 vibrates and deviates, it applies a force to the limiting frame 309. The damping component buffers and reduces the vibration of the limiting frame 309, thus offsetting the vibration force of the detection rod mechanism 2 and providing buffer protection, reducing vibration deviation and damage to the detection rod mechanism 2. When the detection rod mechanism 2 deviates, the force on different positions of the limiting frame 309 is different, and the limiting frame 309 will tilt. Based on the tilt angle of the limiting frame 309 detected by the tilt sensor 308, the tilt direction of the limiting frame 309 is determined. Based on the tilt direction of the limiting frame 309, the limiting... The electrically controlled telescopic mechanism 303, corresponding to the tilt direction of the positioning frame 309, operates. The electrically controlled telescopic mechanism 303 drives the corresponding position of the movable frame 305 to move. The movable frame 305 pushes the damping component, causing the damping component at the corresponding position to compress, increasing the reverse force of the damping component. The damping component applies a greater force to the detection rod mechanism 2 through the limiting frame 309, thereby better limiting the detection rod mechanism 2, preventing the detection rod mechanism 2 from deviating again, completing the automatic correction of the detection rod mechanism 2, improving the stability of the detection rod mechanism 2, preventing the detection rod mechanism 2 from deviating, and ensuring the accuracy of the detection results.

[0029] like Figure 2 , Figure 4As shown, the damping assembly includes a damping rod 306 and a spring 307. There are two damping rods 306, which are mounted on the movable frame 305. The telescopic ends of the damping rods 306 are rotatably connected to the limiting frame 309. The spring 307 is sleeved on the damping rod 306. When the limiting frame 309 limits the detection rod mechanism 2, the damping rods 306 and the spring 307 buffer and cancel the vibration force of the detection rod mechanism 2 when it is struck, reduce the vibration force of the detection rod mechanism 2, buffer and protect the detection rod mechanism 2, and reduce the deviation.

[0030] like Figure 4 As shown, a distance sensor 304 is fixedly installed on the side of the movable frame 305 corresponding to the claw 302. The distance sensor 304 is located on the outside of the two electrically controlled telescopic mechanisms 303. When the electrically controlled telescopic mechanism 303 drives the movable frame 305 to move, the distance sensor 304 monitors the distance between the movable frame 305 and the claw 302 in real time, thereby detecting the telescopic length of the electrically controlled telescopic mechanism 303. This allows for precise control of the telescopic length of the electrically controlled telescopic mechanism 303, and further precise control of the limit on the detection rod mechanism 2.

[0031] like Figure 2 As shown, ball bearings 310 are rotatably arranged on the side of the limiting frame 309 corresponding to the detection rod mechanism 2. When the limiting frame 309 limits and guides the detection rod mechanism 2 through the ball bearings 310, the ball bearings 310 can reduce the friction between the limiting frame 309 and the detection rod mechanism 2, avoid the limiting frame 309 affecting the sliding of the detection rod mechanism 2, make the sliding of the detection rod mechanism 2 smoother, and ensure the normal operation of the measurement work.

[0032] like Figure 1 , Figure 3 , Figure 5 , Figure 6 As shown, the positioning unit includes a spiral drill rod 402, which is threaded onto both sides of the upper surface of the base 1. A turntable 401 is fixedly installed at the upper end of the spiral drill rod 402. During testing, the base 1 is placed at the position to be measured, and the turntable 401 is rotated. The turntable 401 drives the spiral drill rod 402 to rotate, causing the spiral drill rod 402 to drill into the ground and firmly fix the base 1 in the testing position. This ensures that the entire testing device will not shift during the testing process, providing a stable foundation for accurate testing and improving the accuracy and reliability of the testing.

[0033] like Figure 1 , Figure 3 , Figure 6As shown, the guide unit includes a bracket 5, which is fixedly installed on the upper surface of the base 1 and located on both sides of the three-jaw chuck mechanism 301. A slide rod 6 is fixedly installed on the bracket 5, and the slide rod 6 is slidably connected to the hammer mechanism 7. When the hammer mechanism 7 performs the hammering action, the hammer mechanism 7 slides along the slide rod 6 and the bracket 5. The slide rod 6 and the bracket 5 limit and guide the hammer mechanism 7, improve the stability and accuracy of the hammer mechanism 7, and enable the hammer mechanism 7 to hammer the detection rod mechanism 2 vertically and accurately, avoiding the hammer from deviating during the hammering process, thereby improving the detection accuracy.

[0034] like Figure 5 , Figure 6 As shown, a scraper ring 9 is fixedly installed inside the through hole 8. The scraper ring 9 is an elastic ring. Because the scraper ring 9 is an elastic ring, it can fit against the detection rod mechanism 2. During the process of the detection rod mechanism 2 being inserted into and pulled out of the ground, the scraper ring 9 can scrape off the dirt and other impurities attached to the detection rod mechanism 2, keep the detection rod mechanism 2 clean, avoid the adhering impurities from interfering with the detection process and results, and ensure the accuracy of the detection results.

[0035] Working principle: such as Figure 1 , Figure 3 , Figure 5 , Figure 6 As shown, the base 1 is placed at the position to be measured, so that the through hole 8 corresponds to the measurement position. The turntable 401 is rotated, which drives the spiral drill rod 402 to rotate, so that the spiral drill rod 402 drills into the ground and fixes the base 1 firmly at the detection position.

[0036] like Figures 1-5 As shown, after the detection rod mechanism 2 is installed into the through hole 8, the three jaws 302 are moved by the drive component of the three-jaw chuck mechanism 301. The jaws 302 drive the limit frame 309 and the ball 310 to move through the electric telescopic mechanism 303, the movable frame 305, and the damping rod 306. The position of the limit frame 309 is adjusted so that the limit frame 309 drives the ball 310 to fit against the detection rod mechanism 2.

[0037] like Figures 1-4 , Figure 6 As shown, the counterweight mechanism 7 slides along the slide bar 6 and the bracket 5, and applies force to the detection rod mechanism 2 through the counterweight mechanism 7, so that the detection rod mechanism 2 is inserted into the ground. At the same time, when the detection rod mechanism 2 is hit by the hammer, the ball bearing 310 guides the detection rod mechanism 2. The detection rod mechanism 2 applies force to the damping rod 306 and the spring 307 through the ball bearing 310 and the limiting frame 309. The damping rod 306 and the spring 307 buffer and cancel the vibration force when the detection rod mechanism 2 is hit. The tilt angle of the limiting frame 309 is monitored by the tilt sensor 308.

[0038] like Figure 2 , Figure 4 As shown, when the tilt sensor 308 detects that the limit frame 309 is tilted, the tilt direction of the limit frame 309 is determined according to the angle detected by the tilt sensor 308. The electric telescopic mechanism 303 drives the corresponding position of the movable frame 305 to move. The telescopic length of the electric telescopic mechanism 303 is detected by the distance sensor 304. The movable frame 305 pushes the damping rod 306 and the spring 307 and squeezes the damping rod 306 and the spring 307 at the corresponding position to increase the support force in the tilt direction of the detection rod mechanism 2, better limit the detection rod mechanism 2, reset the detection rod mechanism 2, reduce the deviation of the detection rod mechanism 2, complete the automatic correction of the detection rod mechanism 2, prevent the detection rod mechanism 2 from tilting, and ensure the accuracy of the detection results.

[0039] like Figure 5 , Figure 6 As shown, during the insertion and removal of the detection rod mechanism 2 from the ground, the scraper ring 9 can scrape off the dirt and other impurities attached to the detection rod mechanism 2, avoiding interference from the adhering impurities with the detection process and results, and ensuring the accuracy of the detection results.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A ground bearing capacity detection device characterized by comprising: The device includes a base (1), a detection rod mechanism (2), and a counterweight mechanism (7). The base (1) is fixedly equipped with a positioning unit, a limiting unit, and a guiding unit. The base (1) and the limiting unit are provided with through holes (8). The detection rod mechanism (2) is installed in the through hole (8). The counterweight mechanism (7) is slidably installed on the detection rod mechanism (2) and the guiding unit. The limiting unit includes a three-jaw chuck mechanism (301) and a limiting frame (309). The three-jaw chuck mechanism (301) is fixedly installed on the base (1). The through hole (8) is provided through the center of the three-jaw chuck mechanism (301). Three jaws (302) are fixedly installed on the driving component of the three-jaw chuck mechanism (301). An electrically controlled telescopic mechanism (303) is fixedly installed on each of the three jaws (302). The electrically controlled telescopic mechanism (303) on each jaw (302) is arranged vertically. A movable frame (305) is rotatably installed on the telescopic end of the electrically controlled telescopic mechanism (303). A damping component is fixedly installed on the movable frame (305). The limiting frame (309) is rotatably installed on the damping component. An tilt sensor (308) is fixedly installed on the limiting frame (309).

2. The foundation bearing capacity detection device according to claim 1, characterized in that: The damping assembly includes a damping rod (306) and a spring (307). There are two damping rods (306), which are mounted on the movable frame (305). The telescopic end of the damping rod (306) is rotatably connected to the limiting frame (309), and the spring (307) is sleeved on the damping rod (306).

3. The foundation bearing capacity detection device according to claim 1, characterized in that: A distance sensor (304) is fixedly installed on the side of the movable frame (305) corresponding to the claw (302), and the distance sensor (304) is located outside the two electronically controlled telescopic mechanisms (303).

4. The foundation bearing capacity detection device according to claim 1, characterized in that: The limiting frame (309) has ball bearings (310) arranged rotatably on the side corresponding to the detection rod mechanism (2).

5. The foundation bearing capacity detection device according to claim 1, characterized in that: The positioning unit includes a spiral drill rod (402), which is installed on both sides of the upper surface of the base (1) by threaded connection, and a turntable (401) is fixedly installed on the upper end of the spiral drill rod (402).

6. The foundation bearing capacity testing device according to claim 1, characterized in that: The guide unit includes a bracket (5), which is fixedly installed on the upper surface of the base (1) and located on both sides of the three-jaw chuck mechanism (301). A slide rod (6) is fixedly installed on the bracket (5), and the slide rod (6) is slidably connected to the counterweight mechanism (7).

7. The foundation bearing capacity detection device according to claim 1, characterized in that: A scraper ring (9) is fixedly installed inside the through hole (8), and the scraper ring (9) is an elastic ring.

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