Device for detecting compactness of backfill soil for foundation treatment
By introducing rebound, positioning, and stabilization recovery components into the soil compaction testing instrument, the problems of easy damage to the probe and inconsistent depth were solved, ensuring safe insertion and removal of the probe and accuracy of the test data, extending the equipment life and reducing soil disturbance.
Patent Information
- Application Number
- CN202510990806.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-18
- Publication Date
- 2025-11-18
AI Technical Summary
Traditional soil compaction testing instruments are prone to probe bending or breaking during use, and it is difficult to ensure the consistency of insertion depth each time, resulting in deviations in the test data.
Employing a rebound assembly, a positioning assembly, and a stable recovery assembly, and utilizing an electric telescopic rod, a wedge structure, and a conical spike design, the probe can be interrupted in an emergency, positioned stably, and recovered smoothly, preventing probe damage and depth deviation.
It effectively prevents probe damage, ensures consistency of detection depth and accuracy of data, extends equipment life, reduces soil disturbance, and improves the reliability of detection results.
Smart Images
Figure CN120967913A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of engineering testing equipment technology, and in particular to a device for testing the compaction of backfill soil in foundation treatment. Background Technology
[0002] In the field of foundation treatment for building engineering, the compaction of backfill soil directly affects the bearing capacity of the foundation and the stability of the building, and is a key indicator for construction quality control.
[0003] The backfill compaction tester is mainly used to accurately determine the compaction degree of various types of backfill soil, such as sandy soil, silty soil, and clayey soil. Its working principle involves vertically pressing a drill rod probe into the soil layer to be tested, using built-in sensors to collect soil resistance data, and then calculating and analyzing the data to present the backfill compaction value in real time. During operation, the operator only needs to smoothly press the drill rod probe down to the predetermined depth, and the instrument can quickly complete data acquisition and processing.
[0004] However, traditional soil compaction testing instruments lack overload protection mechanisms during the insertion process. When encountering hard soil layers or obstacles, the probe is prone to bending or even breaking. Furthermore, the probe usually needs to be inserted into the soil at different depths multiple times. During operation, the operator judges the depth by the scale. Due to factors such as visual errors and uneven operating force, it is difficult to ensure that the insertion depth is consistent each time, which makes it difficult to guarantee the accuracy of the test depth and easily leads to deviations in the test data.
[0005] Accordingly, this application proposes a device for testing the compaction of backfill soil in foundation treatment. Summary of the Invention
[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for detecting the compaction of backfill soil in foundation treatment.
[0007] To achieve the above objectives, the present invention adopts the following technical solution: A device for detecting the compaction of backfill soil in foundation treatment includes a device body, two rebound components, two positioning components, and two stabilization and recovery components. A probe rod is fixedly installed below the device body. A cross is fixedly connected to the device body. The cross has two sliding grooves. Two positioning boxes are fixedly connected to the cross. Three sets of slide rails are fixedly connected to each of the two positioning boxes. Three circular grooves are provided on each of the two positioning boxes. Two sleeves are fixedly connected to the cross. A bracket is fixedly connected to each of the two sleeves. The two rebound assemblies are respectively used to perform emergency interruption and provide counter-thrust when the probe pressure is too high; The two positioning components are used to perform stable positioning after the probe has detected a certain depth; The two stabilized recovery components are used for the stable recovery of the pulled-out probe.
[0008] Preferably, the rebound assembly consists of an electric telescopic rod, a baffle, a first spring, and a rebound rod. The rebound rod is slidably connected inside the sleeve. One end of the first spring is fixedly connected to the inner wall above the sleeve, and the other end is fixedly connected to the top of the rebound rod. The baffle is slidably connected inside the sleeve, and the electric telescopic rod is fixedly installed on the bracket.
[0009] Preferably, the positioning component consists of three first inclined blocks, three sliding rods, a mounting block, and a second inclined block. The three first inclined blocks are slidably connected to three sets of slide rails, the three sliding rods are slidably connected to three circular grooves, the mounting block is disposed on the slide groove, and the second inclined block is rotatably connected to the mounting block.
[0010] Preferably, the stable recovery assembly consists of a rack, a support rod, a chassis, and several conical spikes. The support rod is slidably connected to a groove, the rack is fixedly connected to the support rod, the chassis is fixedly connected below the support rod, and the several conical spikes are respectively fixedly connected below the chassis.
[0011] Preferably, the output shaft of the electric telescopic rod is fixedly connected to the baffle, the inclined surface of the second inclined block can fit against the inclined surface of the first inclined block, one end of the slide rod is fixedly connected to the first inclined block, the support rod is fixedly connected to the mounting block, the rack is slidably connected to the slide groove, and two supports are fixedly connected below the cross.
[0012] Preferably, gears are rotatably connected to the two supports, rocker arms are rotatably connected to the two supports, the two rocker arms are fixedly connected to the two gears, and three knobs are rotatably connected to the two sleeves, with the three knobs respectively attached to three circular grooves.
[0013] Preferably, the two gears are respectively meshed with two racks, and the probe rod has a slot at the end away from the device body, and a third spring is fixedly connected in the slot of the probe rod.
[0014] Preferably, a pressure sensor is fixedly installed inside the probe slot, the pressure sensor is located inside the third spring, one end of the third spring is fixedly connected to a spike, and the positioning box is marked with a scale.
[0015] Preferably, the spike is slidably connected inside the probe slot, and two second springs are fixedly connected to the first inclined block, with the ends of the two second springs away from the first inclined block respectively fixedly connected to the inner wall of the positioning box.
[0016] The present invention has the following beneficial effects: With the rebound assembly, when the probe pressure is too high, the spike will compress the spring to apply pressure to the pressure sensor. When the pressure is overloaded, the pressure sensor controls the electric telescopic rod to retract, which drives the baffle to move and release the limit on the rebound rod. The first spring releases its elastic force and pushes the rebound rod downward. The upward thrust generated after the rebound rod contacts the ground realizes the emergency interruption of detection, avoiding excessive pressure on the probe rod and causing damage, thus extending the service life of the equipment.
[0017] By turning the corresponding scale knob to the groove using the positioning component, when the probe is inserted into the soil, the cross will cause the positioning box to slide downwards, so that the inclined surface of the first inclined block contacts the inclined surface of the second inclined block. Based on the inclined plane transmission principle, the first inclined block slides along the slide rail under the action of thrust. When the second inclined block slides to the predetermined scale, the knob blocks the corresponding scale groove, preventing the first inclined block from sliding into the groove, thus limiting the second inclined block. At this time, the first and second inclined blocks are locked together to form a stable limiting structure, so that the probe maintains a fixed depth during the detection process, avoiding inaccurate detection data due to depth deviation, and ensuring the consistency and reliability of the detection results.
[0018] By stabilizing the recovery components, once the detection is complete, step on the chassis to prevent the device from shifting during the recovery process. Then, turn the rocker arm to make the gear slide upward along the rack, thereby causing the cross to drive the probe and the device body to slide upward along the support rod, smoothly recovering the probe from the soil. This avoids lateral swaying of the probe when it is pulled out, reduces disturbance to the surrounding soil, and ensures the consistency and accuracy of the detection data. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of a foundation treatment backfill soil compaction testing device proposed in this invention; Figure 2 This is a schematic diagram of the connection structure of the cross, sleeve and device body of the foundation treatment backfill soil compaction detection device proposed in this invention. Figure 3 This is an internal sectional view of the sleeve of a foundation treatment backfill soil compaction testing device proposed in this invention; Figure 4 This is an internal sectional view of the positioning box of a foundation treatment backfill soil compaction testing device proposed in this invention; Figure 5 This is a schematic diagram of the connection structure of the components below the cross-shaped part of the foundation treatment backfill soil compaction detection device proposed in this invention. Figure 6 for Figure 5 Enlarged diagram of point A in the diagram; Figure 7This is a schematic diagram of a partial connection structure of the mounting block, the second inclined block, and the rack and pinion of a foundation treatment backfill soil compaction testing device proposed in this invention. Figure 8 This is a partial cross-sectional view of the probe of a foundation treatment backfill soil compaction testing device proposed in this invention; Figure 9 This is a diagram showing the position of the circular groove on the positioning box of the foundation treatment backfill soil compaction detection device proposed in this invention. Figure 10 This is a schematic diagram of the connection structure of the first inclined block, the sliding rod, and the second spring in a foundation treatment backfill soil compaction detection device proposed in this invention.
[0020] In the diagram: 1. Device body, 2. Cross, 3. Sleeve, 4. Bracket, 5. Chassis, 6. Support rod, 7. Spike, 8. Probe, 9. Positioning box, 10. Knob, 11. Slide groove, 12. Electric telescopic rod, 13. Baffle, 14. First spring, 15. First inclined block, 16. Slide rail, 17. Rack, 18. Second inclined block, 19. Mounting block, 20. Slide rod, 21. Support, 22. Gear, 23. Conical spike, 24. Rocker arm, 25. Second spring, 26. Pressure sensor, 27. Circular groove, 28. Third spring, 29. Rebound rod. Detailed Implementation
[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0022] Example 1: Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 8 and Figure 9 A device for detecting the compaction of backfill soil in foundation treatment includes a device body 1, two rebound components, two positioning components, and two stabilization and recovery components. A probe 8 is fixedly installed at the bottom of the device body 1 for inserting into the soil and transmitting the detection data to the device body 1. A cross 2 is fixedly connected to the device body 1. The cross 2 has two sliding grooves 11. Two positioning boxes 9 are fixedly connected to the cross 2. The positioning boxes 9 are marked with scales. The depth of the probe 8 inserted into the soil can be clearly seen according to the scales on the positioning boxes 9. Three sets of sliding rails 16 are fixedly connected to the two positioning boxes 9 respectively. Three circular grooves 27 are provided on the two positioning boxes 9 respectively. Two sleeves 3 are fixedly connected to the cross 2. A bracket 4 is fixedly connected to the two sleeves 3 respectively. The two rebound components are used to provide emergency interruption and reverse thrust when the pressure on probe 8 is too high. The two positioning components are used to achieve stable positioning after the probe 8 detects a certain depth; Two stabilization recovery components are used for the stable recovery of the pull-out probe 8.
[0023] The rebound assembly consists of an electric telescopic rod 12, a baffle 13, a first spring 14, and a rebound rod 29. The rebound rod 29 is slidably connected inside the sleeve 3. One end of the first spring 14 is fixedly connected to the inner wall above the sleeve 3, and the other end is fixedly connected to the top of the rebound rod 29. The baffle 13 is slidably connected inside the sleeve 3. The electric telescopic rod 12 is fixedly installed on the bracket 4. The output shaft of the electric telescopic rod 12 is fixedly connected to the baffle 13. When the electric telescopic rod 12 receives a signal, it drives the baffle 13 to slide, thereby releasing the baffle 13 from limiting the rebound rod 29, and causing the rebound rod 29 to slide rapidly downward under the action of the rebound force of the first spring 14.
[0024] The probe rod 8 has a slot at the end away from the device body 1. A third spring 28 is fixedly connected inside the slot of the probe rod 8. A pressure sensor 26 is fixedly installed inside the slot of the probe rod 8. The pressure sensor 26 is located inside the third spring 28. A spike 7 is fixedly connected to one end of the third spring 28. The spike 7 is slidably connected inside the slot of the probe rod 8. When not in use, the spike 7 will not contact the pressure sensor 26 under the action of the third spring 28. When the spike 7 is inserted into the soil as the probe rod 8 goes down, if it encounters gravel or hard construction waste or other debris, the spike 7 will transmit the pressure it bears to the pressure sensor 26. When the pressure reaches a certain level, the pressure sensor 26 will send a signal to the electric telescopic rod 12.
[0025] In this embodiment, the device body 1 drives the probe rod 8 downward to insert into the soil for compaction testing. When the probe 7 is inserted into the soil along with the probe rod 8, if it encounters gravel or hard construction waste and other debris with excessive pressure, the pressure sensor 26 controls the electric telescopic rod 12 to retract, causing the baffle 13 to move and release the restriction on the rebound rod 29. The first spring 14 releases its elastic force to push the rebound rod 29 downward. The upward thrust generated after the rebound rod 29 contacts the ground achieves an emergency interruption of the detection, avoiding excessive pressure on the probe rod 8 and causing damage, thus extending the service life of the equipment.
[0026] Example 2: Unlike Example 1, referring to Figure 1 , Figure 2 and Figures 5-7 This embodiment also has the following further features: The stable recovery assembly consists of a rack 17, a support rod 6, a base 5, and several spikes 23. The support rod 6 is slidably connected to the slide groove 11, so that the cross 2 can slide on the support rod 6, or the support rod 6 can also slide on the cross 2. The rack 17 is fixedly connected to the support rod 6, the base 5 is fixedly connected to the bottom of the support rod 6, and several spikes 23 are fixedly connected to the bottom of the base 5. Before the probe 8 is inserted, the spikes 23 on the base 5 are driven into the ground to prevent the probe 8 from shaking when it is inserted.
[0027] The rack 17 is slidably connected to the slide groove 11, so that the cross 2 can slide on the rack 17, or the rack 17 can also slide on the cross 2. Two supports 21 are fixedly connected to the bottom of the cross 2. Gears 22 are rotatably connected to the two supports 21 respectively. Rockers 24 are rotatably connected to the two supports 21 respectively. The two rockers 24 are fixedly connected to the two gears 22 respectively. The two gears 22 are meshed with the two racks 17 respectively. Thus, by shaking the rockers 24, the gears 22 can be driven to slide upward along the rack 17, thereby causing the supports 21 to drive the cross 2, the device body 1, and the probe 8 to slide upward.
[0028] In this embodiment, after the detection is completed, the staff only needs to step on the chassis 5 to prevent the device from shifting during the retrieval process. Then, turn the rocker arm 24 to make the gear 22 slide upward along the rack 17, so that the cross 2 drives the probe 8 and the device body 1 to slide upward along the support rod 6, so that the probe 8 can be smoothly retrieved from the soil, avoiding lateral swaying of the probe 8 when it is pulled out, reducing disturbance to the surrounding soil, and ensuring the continuity and accuracy of the detection data. Example 3: Reference Figure 1 , Figures 4-7 , Figure 10 Compared to Embodiment 1 and Embodiment 2, in this embodiment: The positioning assembly consists of three first inclined blocks 15, three sliding rods 20, a mounting block 19, and a second inclined block 18. The three first inclined blocks 15 are slidably connected to three sets of slide rails 16, and the three sliding rods 20 are slidably connected to three circular grooves 27. One end of each sliding rod 20 is fixedly connected to a first inclined block 15, so that when the first inclined block 15 slides, it can drive the sliding rod 20 to slide on the circular groove 27. The mounting block 19 is located on the slide groove 11, and the second inclined block 18 is rotatably connected to the mounting block 19. By rotating the second inclined block 18 in advance, when… When the stable recycling component is working, the first inclined block 15 slides upward, which can prevent the second inclined block 18 from directly limiting the rise of the first inclined block 15. The inclined surface of the second inclined block 18 can fit with the inclined surface of the first inclined block 15. Thus, when the first inclined block 15 slides downward, under the pushing force of the inclined surface of the second inclined block 18, the first inclined block 15 can slide towards the circular groove 27. The support rod 6 is fixedly connected to the mounting block 19. When the cross 2 drives the probe 8 to insert downward into the soil, the cross 2 can drive the first inclined block 15 in the positioning box 9 to slide downward.
[0029] Two second springs 25 are fixedly connected to the first inclined block 15. The ends of the two second springs 25 away from the first inclined block 15 are fixedly connected to the inner wall of the positioning box 9. The second springs 25 keep the first inclined block 15 in a non-sliding state. Three knobs 10 are rotatably connected to the two sleeves 3 respectively. The three knobs 10 are respectively attached to the three circular grooves 27. By turning the knobs 10, the corresponding scale circular grooves 27 can be covered, so that the corresponding scale circular grooves 27 are in a closed state, so that the first inclined block 15 at the corresponding scale cannot drive the slide rod 20 to slide. Thus, after the probe rod 8 reaches the predetermined depth, the cross 2 cannot drive the probe rod 8 to continue to be inserted downward.
[0030] In this embodiment, the corresponding scale knob 10 is turned to the circular groove 27. When the probe 8 is inserted into the soil, the cross 2 will drive the positioning box 9 to slide downward, so that the inclined surface of the first inclined block 15 touches the inclined surface of the second inclined block 18. Based on the inclined surface transmission principle, the first inclined block 15 slides along the slide rail 16 under the action of the thrust. When the second inclined block 18 slides to the predetermined scale, since the knob 10 blocks the corresponding scale circular groove 27, the first inclined block 15 cannot slide to the circular groove 27, thus limiting the second inclined block 18. At this time, the first inclined block 15 and the second inclined block 18 are locked together to form a stable limiting structure, so that the probe 8 maintains a fixed depth during the detection process, avoids inaccurate detection data due to depth deviation, and ensures the consistency and reliability of the detection results.
[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A device for detecting the compaction of backfill soil in foundation treatment, characterized in that, It includes the device body (1), two rebound assemblies, two positioning assemblies and two stabilizing recovery assemblies; A probe rod (8) is fixedly installed below the device body (1). A cross (2) is fixedly connected to the device body (1). Two sliding grooves (11) are provided on the cross (2). Two positioning boxes (9) are fixedly connected to the cross (2). Three sets of slide rails (16) are fixedly connected to the two positioning boxes (9). Three circular grooves (27) are provided on the two positioning boxes (9). Two sleeves (3) are fixedly connected to the cross (2). A bracket (4) is fixedly connected to the two sleeves (3). The two rebound assemblies are respectively used to perform emergency interruption and provide counter-thrust when the pressure on the probe (8) is too high; The two positioning components are used to perform stable positioning after the probe (8) detects a certain depth; The two stabilized recovery components are used for the stable recovery of the pulled-out probe (8).
2. The foundation treatment backfill soil compaction testing device according to claim 1, characterized in that, The rebound assembly consists of an electric telescopic rod (12), a baffle (13), a first spring (14), and a rebound rod (29). The rebound rod (29) is slidably connected inside the sleeve (3). One end of the first spring (14) is fixedly connected to the inner wall above the sleeve (3), and the other end is fixedly connected to the rebound rod (29). The baffle (13) is slidably connected inside the sleeve (3), and the electric telescopic rod (12) is fixedly installed on the bracket (4).
3. The foundation treatment backfill soil compaction testing device according to claim 2, characterized in that, The positioning component consists of three first inclined blocks (15), three slide rods (20), a mounting block (19), and a second inclined block (18). The three first inclined blocks (15) are slidably connected to three sets of slide rails (16), the three slide rods (20) are slidably connected to three circular grooves (27), the mounting block (19) is located on the slide groove (11), and the second inclined block (18) is rotatably connected to the mounting block (19).
4. The foundation treatment backfill soil compaction testing device according to claim 3, characterized in that, The stable recycling assembly consists of a rack (17), a support rod (6), a chassis (5), and several spikes (23). The support rod (6) is slidably connected to the slide groove (11), the rack (17) is fixedly connected to the support rod (6), the chassis (5) is fixedly connected below the support rod (6), and several spikes (23) are fixedly connected below the chassis (5).
5. The foundation treatment backfill soil compaction testing device according to claim 4, characterized in that, The output shaft of the electric telescopic rod (12) is fixedly connected to the baffle (13), the inclined surface of the second inclined block (18) can fit against the inclined surface of the first inclined block (15), one end of the slide rod (20) is fixedly connected to the first inclined block (15), the support rod (6) is fixedly connected to the mounting block (19), the rack (17) is slidably connected to the slide groove (11), and two supports (21) are fixedly connected below the cross (2).
6. The foundation treatment backfill soil compaction testing device according to claim 5, characterized in that, Gears (22) are rotatably connected to the two supports (21), rockers (24) are rotatably connected to the two supports (21), the two rockers (24) are fixedly connected to the two gears (22), and three knobs (10) are rotatably connected to the two sleeves (3), and the three knobs (10) are respectively attached to the three circular grooves (27).
7. The foundation treatment backfill soil compaction testing device according to claim 6, characterized in that, Two gears (22) are respectively meshed with two racks (17). The probe (8) has a slot at the end away from the device body (1). A third spring (28) is fixedly connected in the slot of the probe (8).
8. The foundation treatment backfill soil compaction testing device according to claim 7, characterized in that, A pressure sensor (26) is fixedly installed in the groove of the probe (8). The pressure sensor (26) is located in the third spring (28). One end of the third spring (28) is fixedly connected to a spike (7). The positioning box (9) is marked with a scale.
9. The foundation treatment backfill soil compaction testing device according to claim 8, characterized in that, The spike (7) is slidably connected in the groove of the probe (8). Two second springs (25) are fixedly connected to the first inclined block (15). The ends of the two second springs (25) away from the first inclined block (15) are respectively fixedly connected to the inner wall of the positioning box (9).