A device and method for detecting and alarming the elevation of concrete pile foundation pouring

Abstract

The application relates to a height detection alarm device and method for concrete pile foundation pouring, and relates to the technical field of pile foundation pouring. In order to solve the problem that a monitoring sensor is easily damaged during dismounting, the device comprises a pile foundation and a reinforcement cage inserted into the pile foundation, the pile foundation is provided with a detection sensor for detecting the height of concrete, the reinforcement cage is detachably connected with a bearing assembly, the bearing assembly comprises a clamp for being fixed on the reinforcement cage, a bearing block fixedly connected with the clamp, and a hooking assembly detachably connected with the bearing block on the detection sensor. The application has the effect of reducing the damage of the monitoring sensor during dismounting.

Description

Technical Field

[0001] This application relates to the field of pile foundation grouting technology, and in particular to an elevation detection alarm device and method for concrete pile foundation grouting. Background Technology

[0002] The elevation of underwater pile foundation concrete pouring is measured using a measuring hammer with a measuring rope. The measuring hammer is inserted into the pile hole. Because the concrete contains coarse aggregates such as crushed stone, as the measuring hammer sinks under its own weight in the concrete, the tension on the measuring rope decreases. The elevation of the concrete surface is determined by observing the change in tension. It is evident that as more concrete adheres to the measuring hammer, the measurement error increases, making it difficult to control the pouring height.

[0003] Chinese Patent No. CN112095681B discloses a monitoring device and method for monitoring the elevation of underwater pile foundation concrete. The device detects the elevation using a monitoring sensor and can be raised above ground level by pulling the communication cable connected to the monitoring sensor.

[0004] Since the monitoring sensor is snapped onto the retaining ring, the retaining ring exerts a large frictional force on the monitoring sensor. To pull the monitoring sensor out of the retaining ring, a large pulling force needs to be applied to the communication cable, which can easily cause the connection between the communication cable and the monitoring sensor to break. Summary of the Invention

[0005] To reduce the damage to monitoring sensors during disassembly, this application provides an elevation detection alarm device and method for concrete pile foundation grouting.

[0006] Firstly, this application provides an elevation detection alarm device for concrete pile foundation grouting, which adopts the following technical solution:

[0007] An elevation detection alarm device for concrete pile foundation pouring includes a pile foundation and a reinforcing cage inserted into the pile foundation. A detection sensor for detecting the concrete elevation is installed in the pile foundation. A bearing component is detachably connected to the reinforcing cage. The bearing component includes a clamp for fixing to the reinforcing cage and a bearing block fixedly connected to the clamp. The detection sensor is provided with a hook component for detachably connecting to the bearing block.

[0008] By adopting the above technical solution, the clamps are first installed on the reinforcing cage, then the detection sensor is placed inside the pile foundation. The sensor is then fixed to the bearing block using a hook-and-connector assembly. When the sensor detects that the concrete elevation inside the pile foundation has reached the planned value, an alarm is triggered, stopping the concrete pouring. The hook-and-connector assembly is then detached from the bearing block, allowing the sensor to be extracted from the pile foundation. Because the hook-and-connector assembly is detachably connected to the bearing block, interference from other external forces is reduced during sensor removal, facilitating the removal of the sensor from the pile foundation with minimal force and minimizing damage during disassembly.

[0009] Preferably, the detection sensor includes a housing and a connecting rod slidably disposed at the bottom of the housing. One end of the connecting rod that penetrates into the housing is connected to a magnetic block, and the other end of the connecting rod that protrudes from the housing is connected to a float. A Hall sensor for sensing changes in the magnetic field strength of the magnetic block is disposed inside the housing.

[0010] By adopting the above technical solution, the liquid level of the concrete rises continuously during the pouring process, thereby generating buoyancy on the float, causing the magnetic block to move closer and closer to the Hall sensor. The closer the magnetic block is to the Hall module, the more magnetic field lines the Hall module receives. When the magnetic field strength reaches a predetermined value, the detection sensor issues an alarm, thereby stopping the pouring of concrete.

[0011] Preferably, the hook assembly includes a hanging plate connected to the detection sensor, the hanging plate is hung on the support block, the support block has a slot, the hanging plate has a sliding groove communicating with the slot, the same slider is slidably disposed in the slot and the sliding groove, and the detection sensor is provided with a drive component for moving the slider out of the slot.

[0012] By adopting the above technical solution, the mounting plate is hung on the bearing block, and the slot and slide are aligned. One end of the slider is placed in the slot, and the other end is placed in the slide. The slider limits the movement of the mounting plate, making it less likely to move vertically. This reduces the upward buoyancy force exerted by the concrete on the detection sensor, and also prevents the sensor from moving, allowing for more accurate detection of the concrete pouring elevation. Simultaneously, after the concrete pouring is completed, the drive assembly moves the slider into the slot, facilitating the removal of the detection sensor from the pile foundation.

[0013] Preferably, the drive assembly includes a traction rope fixedly connected to the slider, and the other end of the traction rope is provided with a roller for winding the traction rope. The end of the roller is detachably connected to a drive component for driving the roller to rotate.

[0014] By adopting the above technical solution, the driving component drives the roller to rotate and wind the traction rope onto the roller. During the winding process, the traction rope pulls the slider from the slot to the groove, thereby causing the slider to lose its limiting effect on the hanging plate, making it easier for the detection sensor to be removed from the pile foundation.

[0015] Preferably, the driving component includes a rotating shaft coaxially connected to the roller, a rack is fixedly connected to the magnetic block, and a gear that meshes with the rack is fixedly connected to the roller.

[0016] By adopting the above technical solution, the float is driven by the buoyancy of the concrete to move the magnetic block vertically upward, thereby causing the rack to move vertically in sync. The gear rotates when the rack moves, driving the rotating shaft and the drum roller to rotate, so that the traction rope pulls the slider out of the slot during the winding process.

[0017] Preferably, a ratchet is fixedly connected to the rotating shaft, the ratchet has meshing ratchet teeth, and a rotating rod that passes through the side wall of the outer casing and is rotatably connected to the ratchet teeth is fixedly connected to the ratchet teeth.

[0018] By employing the above technical solution, when the float fluctuates on the concrete, it tends to move up and down, causing the distance between the magnetic block and the Hall module to fluctuate continuously, making it difficult for the Hall module to accurately determine the magnetic field strength. The ratchet, however, limits the ratchet's rotation, ensuring it can only turn in one direction, thus restricting the float's movement to a vertically upward direction. The rotating rod separates the ratchet from the ratchet, facilitating float positioning before construction.

[0019] Preferably, the rotating shaft has a snap-fit ​​groove, and the end of the roller is fixedly connected to a snap-fit ​​block for insertion into the snap-fit ​​groove.

[0020] By adopting the above technical solution, the cylinder shaft is pulled out from the roller, and the adjusting rod is rotated to wind and unwind the traction rope on the roller, taut the traction rope, and at the same time, the length of the traction rope is adapted to the depth of the detection sensor inserted into the pile foundation, thereby facilitating the adjustment of the traction rope and reducing the impact on the rack position.

[0021] Preferably, a protective box is provided inside the housing, the Hall sensor is placed inside the protective box, a communication cable is electrically connected to the Hall sensor, and one end of the communication cable passing through the housing is electrically connected to a terminal device.

[0022] By employing the above technical solution, the protective box isolates the Hall module from the concrete that has seeped into the outer shell, thereby preventing the concrete from interfering with the Hall module and affecting its accuracy. Simultaneously, the protective box also limits the movement of the magnetic block, preventing it from rising continuously and colliding with the Hall module.

[0023] Secondly, this application provides a method for using an elevation detection alarm device for concrete pile foundation pouring, comprising the following steps:

[0024] S1. Rotate the rotating lever to separate the ratchet from the ratchet wheel, then rotate the adjusting lever to adjust the length of the traction rope and make the traction rope taut;

[0025] S2. Fix the load-bearing component to the steel cage, lower the detection sensor into the pile foundation, and fix the detection sensor to the load-bearing component;

[0026] S3. When concrete is poured, the concrete generates buoyancy on the float, causing the magnetic block to slide vertically upward. The closer the magnetic block is to the Hall module, the more magnetic field lines the Hall module receives. When the magnetic field strength reaches the predetermined value, the terminal device issues an alarm, thereby stopping the concrete pouring.

[0027] S4. When the magnetic block slides vertically upward, it drives the roller to rotate, thereby winding the traction rope. After the traction rope pulls the slider out of the slot, the communication cable is pulled up to remove the detection sensor from the pile foundation, and the detection sensor is cleaned for future use.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. First, attach the clamps to the reinforcing cage, then place the detection sensor inside the pile foundation. Secure the sensor to the bearing block using the hook-and-connector assembly. When the sensor detects that the concrete elevation inside the pile foundation has reached the planned value, an alarm is triggered, stopping the concrete pouring. Then, detach the hook-and-connector assembly from the bearing block to remove the sensor from the pile foundation. Because the hook-and-connector assembly is detachably connected to the bearing block, interference from external forces is reduced during sensor removal, allowing for easy removal of the sensor from the pile foundation with minimal force and minimizing damage during disassembly.

[0030] 2. The float is driven by the buoyancy of the concrete to move the magnetic block vertically upward, which causes the rack to move vertically in sync. The gear rotates when the rack moves, which drives the rotating shaft and the drum roller to rotate, so that the traction rope pulls the slider out of the slot during the winding process.

[0031] 3. When the float fluctuates on the concrete, it tends to move up and down, causing the distance between the magnetic block and the Hall module to fluctuate continuously, making it difficult for the Hall module to accurately determine the magnetic field strength. The ratchet teeth limit the ratchet wheel, allowing it to rotate only in one direction, thus restricting the float's movement to a vertically upward direction. The rotating rod can separate the ratchet teeth from the ratchet wheel, facilitating float positioning before construction.

[0032] 4. Remove the drum shaft from the roller, rotate the adjusting rod to wind and unwind the traction rope on the roller, taut the traction rope, and at the same time make the length of the traction rope adapt to the depth of the detection sensor inserted into the pile foundation, so as to reduce the impact on the position of the rack when adjusting the traction rope. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0034] Figure 2 This is a cross-sectional structural diagram of an embodiment of this application;

[0035] Figure 3 This is an exploded view of the driving component in an embodiment of this application.

[0036] Explanation of reference numerals in the attached drawings: 1. Pile foundation; 11. Reinforcing cage; 2. Detection sensor; 21. Housing; 22. Connecting rod; 23. Float; 24. Magnetic block; 25. Hall sensor; 26. Protective box; 27. Communication cable; 28. Terminal equipment; 3. Bearing component; 31. Clamp; 32. Bearing block; 321. Slot; 4. Hook assembly; 41. Hanging plate; 42. Pull pipe; 43. Slide groove; 44. Slider; 45. Pulley; 5. Drive assembly; 51. Traction rope; 52. Roller; 53. Drive component; 531. Rotating shaft; 532. Gear; 533. Rack; 534. Insertion block; 54. Adjusting rod; 6. Ratchet; 61. Ratchet tooth; 62. Rotating rod. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0038] This application discloses an elevation detection and alarm device for concrete pile foundation pouring. (Refer to...) Figure 1 and Figure 2 The system includes a pile foundation 1 and a reinforcing cage 11 inserted into the pile foundation 1. A detection sensor 2 is installed inside the pile foundation 1 and is detachably connected to the reinforcing cage 11. The detection sensor 2 includes a housing 21, with a connecting rod 22 passing through the bottom of the housing 21. A float 23 is fixedly connected to one end of the connecting rod 22 that extends out of the housing 21, and a magnetic block 24 is fixedly connected to the other end of the connecting rod 22 away from the float 23. A protective box 26 is fixedly connected inside the housing 21. A Hall module for sensing magnetic field strength is installed in the protective box 26. A communication cable 27 is electrically connected to the Hall module, and the other end of the communication cable 27 is electrically connected to a data terminal device 28 for displaying the values ​​measured by the Hall module.

[0039] When the concrete is poured to the same height as the float 23, it pushes the float 23 vertically, causing the magnetic block 24 to move closer to the Hall module. The Hall module can sense the change in the magnetic field strength of the magnetic block 24, thus determining the elevation of the concrete in the pile foundation 1, which is then recorded via a data terminal. The protective box 26 isolates the concrete that has seeped into the outer shell 21 from the Hall module, preventing it from interfering with the Hall module and affecting its accuracy. Simultaneously, the protective box 26 also limits the movement of the magnetic block 24, preventing it from rising and colliding with the Hall module.

[0040] Reference Figure 2 A bearing assembly 3 is provided on the reinforcing cage 11. The bearing assembly 3 includes a clamp 31 detachably connected to the reinforcing cage 11. A bearing block 32 is fixedly connected to the side wall of the clamp 31. The bearing block 32 is L-shaped and has a slot 321. A hook assembly 4 is provided on the detection sensor 2 and is detachably connected to the bearing block 32. The hook assembly 4 includes a pull tube 42 fixedly connected to the detection sensor 2. The pull tube 42 is a telescopic tube. The end of the pull tube 42 away from the detection sensor 2 is vertically connected to a hanging plate 41 for hanging on the bearing block 32. A sliding groove 43 communicating with the slot 321 is provided on the hanging plate 41. A slider 44 is slidably arranged in the sliding groove 43. One end of the slider 44 is located in the sliding groove 43, and the other end of the slider 44 is located in the slot 321.

[0041] The detection sensor 2 is hooked onto the support block 32 via the hook assembly 4, and the slider 44 is placed across the slot 321 and the slide 43 to fix the detection sensor 2. When the concrete applies buoyancy to the detection sensor 2, the slider 44 can limit the hanging plate 41, reducing the possibility of the detection sensor 2 moving vertically under the thrust of the concrete.

[0042] Reference Figure 2 and Figure 3 The detection sensor 2 is equipped with a drive assembly 5 for moving the slider 44 out of the slot 321. The drive assembly 5 includes a traction rope 51 fixedly connected to the slider 44, a pulley 45 rotatably connected inside the pull tube 42, the traction rope 51 is wound around the pulley 45 and passes through the pull tube 42, and a roller 52 for winding the traction rope 51 is provided at the end of the traction rope 51 away from the slider 44. The roller 52 is rotatably mounted on the inner wall of the outer shell 21, and a drive member 53 for driving the roller 52 to rotate is connected to the roller 52.

[0043] Reference Figure 2 and Figure 3The driving component 53 includes a rotating shaft 531 rotatably disposed within the housing 21. The rotating shaft 531 is detachably connected to the roller 52. Two support rods are fixedly connected to the inner wall of the housing 21. The ends of the two support rods that are close to each other are fixedly connected to the same bearing, which is sleeved on the outside of the rotating shaft 531. A rack 533 is fixedly connected to the magnetic block 24, and a gear 532 that meshes with the rack 533 is fixedly connected to the outer peripheral wall of the rotating shaft 531.

[0044] When the magnetic block 24 slides vertically within the outer casing 21 due to the buoyancy of the concrete, it drives the rack 533 to move, thereby driving the gear 532 to rotate. When the gear 532 rotates, it drives the roller 52 to rotate, thereby winding the traction rope 51, and then pulling the slider 44 out of the slot 321. When the slider 44 slides out of the slot 321, the detection sensor 2 loses the limiting function of the slider 44. The detection sensor 2 can be pulled out of the pile foundation 1 by lifting the communication cable 27, thereby reducing the damage to the communication cable 27 during the disassembly of the monitoring sensor.

[0045] Reference Figure 2 and Figure 3 A rectangular insertion block 534 is fixedly connected to one end of the roller 52 near the rotating shaft 531. A snap-fit ​​groove for inserting the insertion block 534 is provided at one end of the rotating shaft 531 near the roller 52. An adjusting rod 54, extending through the side wall of the outer casing 21, is fixedly connected to the other end of the roller 52 away from the insertion block 534. The roller shaft is pulled out of the rotating shaft 531, and the adjusting rod 54 is rotated to wind and unwind the traction rope 51 on the roller 52, ensuring that the length of the traction rope 51 matches the depth of the detection sensor 2 inserted into the pile foundation 1. The traction rope 51 is then taut, facilitating the removal of the slider 44 from the slot 321 when the roller 52 rotates.

[0046] Reference Figure 2 and Figure 3 A ratchet 6 is fixedly connected to the rotating shaft 531. A ratchet tooth 61 engages with the ratchet 6, and a rotating rod 62 is fixedly connected to the ratchet tooth 61. One end of the rotating rod 62 passes through the side wall of the outer casing 21 and is rotatably connected to the outer casing 21. The ratchet tooth 61 limits the ratchet 6, allowing it to rotate only in one direction. When the rack 533 moves upward, it drives the rotating shaft 531 to rotate, causing the ratchet 6 to rotate synchronously, thus engaging the ratchet tooth 61. When the rack 533 moves downward, the ratchet tooth 61 limits the ratchet 6, preventing the rotating shaft 531 from rotating.

[0047] When the float 23 fluctuates on the concrete, it tends to move up and down, causing the distance between the magnetic block 24 and the Hall module to fluctuate continuously, making it difficult for the Hall module to accurately determine the magnetic field strength. After the detection sensor 2 is pulled out from the pile foundation 1, the rotating rod 62 is rotated to separate the ratchet 61 from the ratchet 6, and then the float 23 is returned to its initial position.

[0048] The implementation principle of the elevation detection alarm device for concrete pile foundation pouring in this application embodiment is as follows: During the pouring process, the liquid level of the concrete rises continuously, thereby generating buoyancy on the float 23, causing the magnetic block 24 to move closer and closer to the Hall sensor 25. The closer the magnetic block 24 is to the Hall module, the more magnetic field lines the Hall module receives. When the magnetic field strength reaches a predetermined value, the terminal device 28 issues an alarm, thereby stopping the pouring of concrete.

[0049] The float 23, buoyed by the concrete, causes the magnetic block 24 to move vertically upwards, which in turn causes the rack 533 to move vertically in sync. The gear 532 rotates as the rack 533 moves, driving the rotating shaft 531 and the drum roller to rotate. This causes the traction rope 51 to pull the slider 44 out of the slot 321 during winding. Pulling the communication cable 27 allows the detection sensor 2 to be removed from the pile foundation 1. Because the hook assembly 4 is detachably connected to the bearing block 32, interference from the bearing block 32 to the detection sensor 2 is reduced during disassembly, making it easier to remove the detection sensor 2 from the pile foundation 1 with minimal force and reducing damage to the monitoring sensor during disassembly.

[0050] This application also discloses a method for using a concrete pile foundation pouring elevation detection alarm device, including the following steps:

[0051] S1. Remove the drum shaft from the rotating shaft 531, rotate the adjusting rod 54 to wind and unwind the traction rope 51 on the roller 52, so that the length of the traction rope 51 is adapted to the depth of the detection sensor 2 inserted into the pile foundation 1, and straighten the traction rope 51. Then rotate the rotating rod 62 to separate the ratchet 61 from the ratchet 6, and then adjust the position of the magnetic block 24;

[0052] S2. Place the clamp 31 on the steel cage 11, then place the detection sensor 2 into the pile foundation 1, hang the hanging plate 41 on the bearing block 32, align the groove 321 with the slide 43, place one end of the slider 44 in the groove 321, and place the other end of the slider 44 in the slide 43.

[0053] S3. When the concrete is poured, the concrete generates buoyancy on the float 23, causing the magnetic block 24 to slide vertically upward. The closer the magnetic block 24 is to the Hall module, the more magnetic field lines the Hall module receives. When the magnetic field strength reaches the predetermined value, the terminal device 28 issues an alarm, thereby stopping the concrete pouring.

[0054] S4. When the magnetic block 24 slides vertically upward, the rack 533 drives the gear 532 and the roller 52 to rotate. When the roller 52 rotates, it winds up the traction rope 51. After the traction rope 51 pulls the slider 44 out of the slot 321, the communication cable 27 is pulled up to pull the detection sensor 2 out of the pile foundation 1 and the detection sensor 2 is cleaned for future use.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An elevation detection alarm device for concrete pile foundation pouring, comprising a pile foundation (1) and a reinforcing cage (11) inserted into the pile foundation (1), wherein a detection sensor (2) for detecting concrete elevation is provided in the pile foundation (1), characterized in that, The steel cage (11) is detachably connected to a bearing assembly (3), which includes a clamp (31) for fixing to the steel cage (11) and a bearing block (32) fixedly connected to the clamp (31). The detection sensor (2) is provided with a hook assembly (4) for detachably connecting to the bearing block (32). The detection sensor (2) includes a housing (21) and a connecting rod (22) slidably disposed at the bottom of the housing (21). One end of the connecting rod (22) that enters the housing (21) is connected to a magnetic block (24), and the other end of the connecting rod (22) that exits the housing (21) is connected to a float (23). A Hall sensor (25) for sensing changes in the magnetic field strength of the magnetic block (24) is disposed inside the housing (21). The hook assembly (4) includes a hanging plate (41) connected to the detection sensor (2). The hanging plate (41) is hung on the support block (32). The support block (32) has a slot (321). The hanging plate (41) has a sliding groove (43) communicating with the slot (321). The same slider (44) is slidably arranged in the slot (321) and the sliding groove (43). The detection sensor (2) is provided with a drive assembly (5) for moving the slider (44) out of the slot (321).

2. The elevation detection alarm device for concrete pile foundation pouring according to claim 1, characterized in that, The drive assembly (5) includes a traction rope (51) fixedly connected to the slider (44), and the other end of the traction rope (51) is provided with a roller (52) for winding the traction rope (51). The end of the roller (52) is detachably connected to a drive member (53) for driving the roller (52) to rotate.

3. A device for detecting and alarming the elevation of concrete pile foundation pouring according to claim 2, characterized in that, The drive unit (53) includes a rotating shaft (531) coaxially connected to the roller (52), a rack (533) fixedly connected to the magnetic block (24), and a gear (532) meshing with the rack (533) fixedly connected to the roller (52).

4. The device for detecting and alarming the elevation of concrete pile foundation pouring according to claim 3, characterized in that, A ratchet (6) is fixedly connected to the rotating shaft (531), and a ratchet tooth (61) is engaged on the ratchet (6). A rotating rod (62) that passes through the side wall of the outer shell (21) and is rotatably connected to the ratchet tooth (61) is fixedly connected to the ratchet tooth (61).

5. A device for detecting and alarming the elevation of concrete pile foundation pouring according to claim 4, characterized in that, The rotating shaft (531) has a snap-fit ​​groove, and the end of the roller (52) is fixedly connected to a snap-fit ​​block (534) for inserting into the snap-fit ​​groove. The end of the roller (52) away from the snap-fit ​​block (534) is fixedly connected to an adjusting rod (54) that protrudes from the side wall of the outer shell (21).

6. The elevation detection and alarm device for concrete pile foundation grouting according to claim 1, characterized in that, The outer casing (21) is provided with a protective box (26), the Hall sensor (25) is placed inside the protective box (26), and a communication cable (27) is electrically connected to the Hall sensor (25). One end of the communication cable (27) passing through the outer casing (21) is electrically connected to a terminal device (28).

7. A construction method for detecting the elevation of concrete pile foundation pouring, using the alarm device for detecting the elevation of concrete pile foundation pouring according to claim 5, characterized in that: Includes the following steps: S1. Rotate the rotating rod (62) to separate the ratchet (61) from the ratchet (6), and then rotate the adjusting rod (54) to adjust the length of the traction rope (51) and make the traction rope (51) taut. S2. Fix the bearing assembly (3) on the steel cage (11), and lower the detection sensor (2) into the pile foundation (1), and fix the detection sensor (2) to the bearing assembly (3); S3. When the concrete is poured, the concrete generates buoyancy on the float (23), causing the magnetic block (24) to slide vertically upward. The closer the magnetic block (24) is to the Hall module, the more magnetic field lines the Hall module receives. When the magnetic field strength reaches the predetermined value, the terminal device (28) issues an alarm, thereby stopping the concrete pouring. S4. When the magnetic block (24) slides vertically upward, it drives the roller (52) to rotate, thereby winding the traction rope (51). After the traction rope (51) pulls the slider (44) out of the slot (321), the communication cable (27) is pulled up to pull the detection sensor (2) out of the pile foundation (1) and the detection sensor (2) is cleaned for the next use.

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