A deep foundation pit displacement monitoring device

Abstract

This invention provides a deep foundation pit displacement monitoring device, including a monitoring unit comprising a pole, an equipment box, and an inclination sensor. The equipment box is mounted on the pole, and a base is provided at the bottom of the pole. The bottom of the base is connected to a support and positioning mechanism. The inclination sensor is connected to the equipment box via a cable, and a steel rope is provided between the inclination sensor and the pole. This invention has the following advantages: by incorporating a steel rope and a winding mechanism, and by setting a steel rope between the inclination sensor and the pole, the steel rope maintains the physical connection between the inclination sensor and the pole when the inclination sensor shifts position due to slope settlement. Even in the event of slope displacement, the tensile load on the cable is reduced through the steel rope connection, thereby improving cable protection to a certain extent and further ensuring the continuity and stability of data transmission.

Description

Technical Field

[0001] This invention is a deep foundation pit displacement monitoring device, belonging to the field of deep foundation pit displacement monitoring equipment. Background Technology

[0002] Deep foundation pits are characterized by great depth and high pressure, which can easily lead to displacement of the pit walls and surrounding structures. To prevent pit instability during deep foundation pit operations, displacement monitoring is necessary. Currently, foundation pit displacement monitoring mainly uses a combination of monitoring stations and tilt sensors. By installing the monitoring station in a stable ground location with good visibility, tilt sensors are deployed on the slope and key locations of the foundation pit to monitor changes in slope tilt displacement and transmit the data to the monitoring station for further analysis.

[0003] Currently, in slope areas, due to variable climatic conditions such as heavy rainfall, humidity, and strong winds, unstable environmental factors can interfere with data transmission. To reduce this interference, cable connections are commonly used. Compared to wireless signal connections, cable connections are more stable in terms of anti-interference and can effectively avoid the influence of electromagnetic interference and other external signals on monitoring data. However, in practical applications, when slope settlement occurs, the tilt sensor will also shift relative to the actual displacement of the slope, causing the cable connecting the sensor and the monitoring station to be stretched. In cases of excessive slope settlement, the cable may detach from the sensor and monitoring station due to excessive stretching. This not only affects the accurate transmission of data but may also prevent the sensor from communicating normally with the monitoring station, thus failing to transmit real-time data and causing the monitoring system to malfunction. Furthermore, when installing the displacement monitoring station on the ground, it is necessary to first excavate a pit in the ground and then pour a ground cage, which is then fixed to the ground cage with bolts. On the one hand, the ground cage needs to wait for a certain period of time to solidify after pouring, affecting construction efficiency; on the other hand, the ground cage is inconvenient to carry after use, making it a disposable tool and causing resource waste. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a deep foundation pit displacement monitoring device.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] A deep foundation pit displacement monitoring device includes a monitoring device, which includes a pole, an equipment box, and an inclination sensor. The equipment box is mounted on the pole, and a base is provided at the bottom of the pole. The bottom of the base is connected to a support positioning mechanism. The inclination sensor is connected to the equipment box via a cable, and a steel rope is provided between the inclination sensor and the pole. The pole is provided with an unwinding mechanism that cooperates with the steel rope.

[0007] Furthermore, the support positioning mechanism includes a base and a top cover that is inserted into the base. Several T-shaped rods are inserted into the base, and an annular groove is formed on one side of the lower end of each T-shaped rod. Several positioning seats that are inserted into the T-shaped rods are fixedly connected in an annular pattern at equal intervals to the inner bottom of the base. The lower end of each T-shaped rod extends through the base and the top cover into the base and is inserted into the positioning seat. The positioning seat has a notch that matches the annular groove. Several support seats are fixedly connected in an annular pattern at equal intervals to the bottom of the base. The support seats and the positioning seats are staggered. Soil nailing rods are inserted into the center of the bottom of the base and inside the support seats. A striking block is inserted into the top of each soil nailing rod.

[0008] The soil nailing rod has a hollow structure. Several through holes are evenly distributed at the lower end of the outer circumference of the soil nailing rod. A positioning plate is hinged in the through holes. A connecting rod one is slidably connected inside the soil nailing rod. A connecting rod two is hinged between the connecting rod one and the positioning plate. A striking block is inserted into the top opening of the soil nailing rod. The bottom end of the striking block penetrates into the soil nailing rod and is rotatably connected to the end of the connecting rod one.

[0009] Furthermore, a turntable is rotatably connected to the bottom center of the top cover. Several locking blocks and several limiting plates are evenly fixed on the outer circumference of the turntable. The locking blocks and the limiting plates are staggered. The locking blocks have a trapezoidal structure. The locking blocks cooperate with the notch and the annular groove. The limiting plates abut against the outer surface of the striking block.

[0010] A connecting shaft is rotatably connected to one side of the outer circumference of the top cover. One end of the connecting shaft is connected to a handwheel via a tensioning assembly. A drive gear is fixedly connected to one end of the connecting shaft inside the top cover. A gear ring meshes with the drive gear, and the gear ring is connected and fixed to the turntable.

[0011] Furthermore, the tensioning assembly includes a second connecting shaft fixed to the handwheel near the first connecting shaft. The second connecting shaft is slidably connected to the end of the first connecting shaft. A fixing plate is fixedly connected to the second connecting shaft. Several locking blocks are fixedly connected in an annular pattern at equal intervals on one side of the outer surface of the fixing plate. The fixing plate is fitted into a fixing seat that is fixedly connected to the top cover. A slot is provided on one side of the inner wall of the fixing seat to match the several locking blocks. A return spring is fitted onto the second connecting shaft. The two ends of the return spring are respectively connected and fixed to the first connecting shaft and the fixing plate.

[0012] Furthermore, the unwinding mechanism includes a frame detachably mounted on the upright, with slots on both sides of the frame, and a spool rotating between the two sets of slots. A coil spring is provided in the slot on the left side, and the coil spring is located at one end of the spool. A linkage mechanism is provided at the end of the spool in the slot on the right side.

[0013] The steel rope includes a folded section and a winding section. A cavity is provided inside the reel, and the folded section passes through the cavity. A folded end is provided in the middle of the folded section, and a locking mechanism is provided at the folded end. The two ends of the folded section are a fixed end and a connecting end, respectively. The fixed end is fixedly connected to the reel, and the connecting end is connected to the winding section to form an integral structure. The winding section is wound on the reel, and the end of the winding section away from the connecting end is fixedly connected to the tilt sensor.

[0014] Furthermore, the linkage mechanism includes a second turntable fixed to the end of the spool and a ratchet fixed coaxially with the second turntable. The ratchet is also provided with a stop mechanism. An arc-shaped base is fixed in the slot on the right side. A pawl is rotatably connected to the arc-shaped base. A protrusion is fixed to the arc-shaped base. An arc-shaped movable block is slidably connected to the arc-shaped base. A slider is fixed to the arc-shaped movable block. A groove is provided in the arc-shaped base for the slider to slide in a limited position. A first spring is provided between the protrusion and the arc-shaped movable block. A guide rail is provided on the pawl. A guide block is slidably connected in the guide rail. The guide block is connected and fixed to the arc-shaped movable block.

[0015] Furthermore, the locking mechanism includes a connecting ring disposed at the folded end and a bracket fixed in the slot on the right side. A fixed ring is rotatably connected to one side of the connecting ring. A rod and a pull rope are fixed to the side and center of the fixed ring, respectively. The end of the rod passes through the bracket. A second spring is sleeved on the rod and located between the fixed ring and the bracket. A guide ring and a guide wheel are rotatably connected to the bracket. The end of the pull rope passes through the guide ring and the guide wheel in sequence and is connected to the slide rod. The end of the slide rod is connected and fixed to the slider. A slide rail is provided on the arc-shaped base for the slide rod to be limited and slid. The slide rail communicates with the groove.

[0016] Furthermore, the stopping mechanism includes a stop pawl rotatably connected to the ratchet, a fixing block fixed to the ratchet, and a third spring disposed between the fixing block and the stop pawl. One end of the stop pawl is rotatably connected to the ratchet via a rotating shaft, and the other end of the stop pawl has a beveled design.

[0017] Furthermore, the connecting ring has an opening, and the folded end passes through the opening to form an annular hole.

[0018] Furthermore, the total length of the folded section and the winding section is slightly shorter than that of the cable.

[0019] The beneficial effects of this invention are:

[0020] This invention uses a soil-nailing rod that is inserted into the ground to unfold the positioning plate. This allows the soil-nailing rod and the positioning plate to limit the base in multiple directions, ensuring the base is stably fixed to the ground. After the T-shaped rod passes through the base and top cover and is inserted into the base, the locking block abuts against the positioning seat and the T-shaped rod when the turntable is rotated. This allows the top cover and base to be quickly and tightly connected to the base, ensuring the stability of the support rod, simplifying the installation process, shortening the installation time, and making installation convenient and easy to operate.

[0021] This invention, through the detachable structure of the supporting positioning mechanism, enables structural components to be reused, avoiding resource waste, and allows for individual replacement after structural damage, thus reducing usage costs.

[0022] When the fixed plate moves toward the fixed seat by the spring, the locking block and the locking groove can brake the rotation of the connecting shaft, so as to prevent the connection between the locking block and the fixed seat and the T-shaped rod from becoming loose, thereby further improving the stability of the connection between the top cover, the base and the base.

[0023] This invention incorporates a steel rope and a winding mechanism. By placing the steel rope between the tilt sensor and the upright, the steel rope maintains the physical connection between the tilt sensor and the upright when the tilt sensor shifts position due to slope settlement. Even when the slope shifts, the connection of the steel rope reduces the tensile load on the cable, thereby improving cable protection to a certain extent and further ensuring the continuity and stability of data transmission.

[0024] This invention incorporates a linkage mechanism and a locking mechanism. After the winding section is fully unwound, the tension on the folded section controls the movement of the connecting ring, fixing ring, insert rod, and pull rope. This, in turn, drives the arc-shaped movable block to control the pawl to lock the ratchet. By utilizing the displacement of the folded section within the cavity to control the arc-shaped movable block to lock the ratchet, the maximum displacement of the tilt sensor can be limited, preventing the tilt sensor from moving excessively due to slope settlement and exceeding its monitoring range.

[0025] This invention incorporates a stop mechanism. When the slope experiences significant settlement or collapse, causing the tilt sensor to rapidly shift, centrifugal force can eject the stop pawl, causing it to slide against the arc-shaped movable block. This, in turn, drives the pawl to rotate and lock the ratchet in time. By quickly locking the unwinding of the steel rope, the tilt sensor is prevented from being lost or buried due to slope collapse. Furthermore, by restraining the tilt sensor, it further ensures that the tilt sensor can still provide critical data in emergency situations such as slope collapse, thus enhancing the safety of the monitoring system. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 2 This is a partial structural schematic diagram of the deep foundation pit displacement monitoring device of the present invention;

[0029] Figure 3 This is a schematic diagram of the support and positioning mechanism of the deep foundation pit displacement monitoring device of the present invention;

[0030] Figure 4 This is a cross-sectional view of the support and positioning mechanism of the deep foundation pit displacement monitoring device of the present invention;

[0031] Figure 5 This is a schematic diagram showing the disassembly of the soil nailing rod and striking block structure of the deep foundation pit displacement monitoring device of the present invention;

[0032] Figure 6 This is a schematic diagram of the internal structure of the support and positioning mechanism of the deep foundation pit displacement monitoring device of the present invention;

[0033] Figure 7 This is a schematic diagram showing the disassembled structure of the locking block, limiting seat, and T-shaped rod of the deep foundation pit displacement monitoring device of the present invention;

[0034] Figure 8 This is a schematic diagram of the connection structure of the coupling, handwheel, and tensioning assembly of the deep foundation pit displacement monitoring device of the present invention;

[0035] Figure 9 This is a three-dimensional cross-sectional view of the unwinding mechanism of the present invention;

[0036] Figure 10This is a three-dimensional structural diagram of the frame, slot, linkage mechanism, locking mechanism and stop mechanism of the present invention;

[0037] Figure 11 This is a three-dimensional structural diagram of the frame, slot, scroll, and linkage mechanism of the present invention.

[0038] Figure 12 This is a three-dimensional structural diagram of the steel rope, reel, turntable, ratchet, arc-shaped base, arc-shaped movable block, connecting ring, fixing ring, insertion rod, and rope pulling part of the present invention;

[0039] Figure 13 This is a three-dimensional cross-sectional view of the roll section of the present invention;

[0040] Figure 14 This is a front view of the turntable, ratchet, arc-shaped base, pawl, arc-shaped movable block, and first spring of the present invention.

[0041] Figure 15 This is a front view cross-sectional schematic diagram of the turntable, ratchet, arc-shaped base, pawl, arc-shaped movable block, and first spring of the present invention;

[0042] Figure 16 This is a three-dimensional structural diagram of the arc-shaped base, pawl, and arc-shaped movable block of the present invention;

[0043] Figure 17 This is a three-dimensional cross-sectional view of the arc-shaped base and the arc-shaped movable block of the present invention;

[0044] Figure 18 This is a three-dimensional schematic diagram of the folding section, winding section, locking mechanism, and arc-shaped movable block of the present invention;

[0045] Figure 19 This is an exploded three-dimensional structural diagram of the folded section and connecting ring of the present invention;

[0046] Figure 20 This is a three-dimensional structural diagram of the fixing ring, insert rod, and pull rope of the present invention;

[0047] Figure 21 This is an exploded three-dimensional structural diagram of the roller, spring, turntable, ratchet, and stop mechanism of the present invention.

[0048] In the diagram, 1. Monitoring equipment; 102. Base; 11. Upright pole; 12. Equipment box; 13. Tilt sensor; 14. Cable; 15. T-shaped rod; 2. Steel rope; 21. Folding section; 211. Folding end; 212. Annular hole; 213. Fixed end; 214. Connecting end; 22. Winding section; 201. Base; 202. Soil nailing rod; 203. Positioning plate; 204. Support seat; 205. Linkage rod one; 206. Positioning seat; 207. Notch; 208. Linkage rod two; 209. Striking block; 3. Unwinding mechanism; 31. Frame; 32. Slot; 33. Reel; 331. Cavity; 34. Coil spring; 301. Top cover; 302. Turntable one; 303. Locking block; 304. Limiting plate; 4. Linkage mechanism; 41. Turntable two; 42. Ratchet; 43. 431. Arc-shaped base; 432. Slide rail; 433. Protrusion; 44. Pawl; 441. Guide rail; 442. Guide block; 45. Arc-shaped movable block; 451. Slider; 452. Slide rod; 46. First spring; 401. Annular groove; 5. Locking mechanism; 51. Connecting ring; 511. Opening; 52. Fixing ring; 53. Insert rod; 54. Pull rope; 55. Bracket; 551. Guide ring; 552. Guide wheel; 56. Second spring; 501. Connecting shaft one; 502. Handwheel; 503. Drive gear; 504. Connecting shaft two; 505. Fixing plate; 506. Locking block; 507. Fixing seat; 508. Return spring; 509. Gear ring; 6. Stopping mechanism; 61. Stopping pawl; 611. Rotating shaft; 62. Fixing block; 63. Third spring. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Implementation 1, please refer to Figure 1 This invention provides a technical solution for a deep foundation pit displacement monitoring device, including a monitoring device 1. The monitoring device 1 includes a pole 11, an equipment box 12, and an inclination sensor 13. The equipment box 12 is installed on the pole 11. The bottom of the pole 11 is provided with a base 102, and the bottom of the base 102 is connected to a support positioning mechanism. The inclination sensor 13 is connected to the equipment box 12 by a cable 14. A steel rope 2 is provided between the inclination sensor 13 and the pole 11. The pole 11 is provided with an unwinding mechanism 3 that cooperates with the steel rope 2.

[0051] Example 2, see Figures 2-7The supporting positioning mechanism includes a base 201 and a top cover 301 that is inserted into the base 201. Several T-shaped rods 15 are inserted into the base 102. An annular groove 401 is formed on one side of the lower end of each T-shaped rod 15. Several positioning seats 206, which are inserted into the T-shaped rods 15, are fixedly connected at equal intervals in an annular pattern to the inner bottom of the base 201. The lower end of each T-shaped rod 15 extends through the base 102 and the top cover 301 into the base 201 and is inserted into the positioning seat 206. A notch 20 is formed on the positioning seat 206 that mates with the annular groove 401. 7. The bottom of the base 201 is fixedly connected with several support seats 204 at equal intervals in a ring. The support seats 204 and the positioning seats 206 are staggered. A soil nailing rod 202 is inserted into the center of the bottom of the base 201 and inside the support seats 204. A striking block 209 is inserted into the top of the soil nailing rod 202. The soil nailing rod 202 has a hollow structure. Several through holes are evenly opened at the lower end of the outer circumference of the soil nailing rod 202. A positioning plate 203 is hinged in the through holes. A connecting rod 205 is slidably connected in the soil nailing rod 202. The connecting rod 205 is connected to the positioning plate 206. A connecting rod 208 is hinged between plates 203. A striking block 209 is inserted into the top opening of the soil nailing rod 202. The bottom end of the striking block 209 penetrates into the soil nailing rod 202 and is rotatably connected to the end of the connecting rod 205. A turntable 302 is rotatably connected to the bottom center of the top cover 301. Several locking blocks 303 and several limiting plates 304 are evenly fixed on the outer circumference of the turntable 302. The locking blocks 303 and the limiting plates 304 are staggered. The locking blocks 303 have a trapezoidal structure. The locking blocks 303 and the notch 207 and... The annular groove 401 is engaged with the locking block 303, and the two sides of the locking block 303 are in sliding contact with the notch 207 and the annular groove 401 respectively. The upper side of the notch 207 is inclined and the inclined surface is adapted to the inclined surface of the locking block 303. When the locking block 303 rotates, its upper side slides against the upper side of the notch 207, so that the top cover 301 and the base 201 are tightly connected. The lower side of the locking block 303 slides against the lower side of the annular groove 401, so that the T-shaped rod 15 is connected to the positioning seat 206, so that the base 102 is tightly connected to the base 201. The limiting plate 304 abuts against the outer surface of the striking block 209.A connecting shaft 501 is rotatably connected to one side of the outer circumference of the top cover 301. One end of the connecting shaft 501 is connected to a handwheel 502 via a tensioning assembly. A drive gear 503 is fixedly connected to one end of the connecting shaft 501 inside the top cover 301. A gear ring 509 meshes with the drive gear 503. The gear ring 509 is fixedly connected to the turntable 302. Rotating the handwheel 502 drives the connecting shaft 501 and the drive gear 503 to rotate. The drive gear 503 and the gear ring 509 cooperate to drive the turntable 302 to rotate. The outer diameter of the gear ring 509 is the same as the outer diameter of the turntable 302, so that the rotation of the turntable 302 by the drive gear 503 and the gear ring 509 is a labor-saving movement, which saves the operator's physical strength.In the above technical solution, after the base 201 is placed on a flat surface, the soil nailing rod 202 is passed through the base 201 and inserted into the ground. After the soil nailing rod 202 is inserted into the ground, the base 201 is fixed to the ground. Then, the soil nailing rod 202 can be continued to be struck to unfold the positioning plate 203, improving the stability of the connection between the soil nailing rod 202 and the ground. After the top cover 301 is fitted onto the base 201, the base 102 can be placed on the top cover 301, and the T-shaped rod 15 is passed through the mounting hole of the base 102 and the through hole of the top cover 301, and inserted into the positioning seat 206. The rotating turntable 302 allows the locking block 303 to abut against the positioning seat 206 and the T-shaped rod 15 on both sides, respectively, ensuring that the top cover 301 and the base 102 are tightly connected and fixed to the base 201, achieving rapid installation. In the above technical solution, one soil nailing rod 202 is vertically positioned at the center of the base 201, while the remaining soil nailing rods 202 and the support seat 204 are inclined to the base 201. This increases the contact area between the soil nailing rods 202 and the ground, improving the connection stability between the base 201 and the ground. It can be understood that when the soil nailing rod 202 is in contact with the ground... After insertion, when the connecting rod 205 is lowered, the connecting rod 205 and the connecting rod 208 work together to rotate the positioning plate 203. The positioning plate 203 and the soil nailing rod 202 are set at a certain angle, which further enhances the firmness of the contact with the ground by the cooperation of multiple positioning plates 203 and soil nailing rods 202. In addition, the outer surface of the positioning plate 203 is set with an obtuse angle, which can effectively break the soil when the positioning plate 203 rotates, making it easy for the positioning plate 203 to unfold. One end of the connecting rod 205 is rotatably connected to a striking block 209, and the striking block 209 and the soil nailing rod 202 The striking block 209 is T-shaped and has multiple protrusions on its lower circumference. The upper end of the soil nailing rod 202 has a groove that matches the protrusions. When the bottom surface of the striking block 209 abuts against the upper end of the soil nailing rod 202, the striking block 209, when struck, can cause the soil nailing rod 202 to descend. When the striking block 209 rotates so that the protrusions are located within the groove, the striking block 209, when struck, can cause the connecting rod 205 to descend. Additionally, multiple reinforcing rods are fixedly connected to the bottom of the base 201. These reinforcing rods, when inserted into the ground, further increase the stability of the connection between the base and the ground.

[0052] In actual use, the equipment box 12 is equipped with a power module, a signal acquisition module, and a data transmission module. The signal acquisition module is connected to the external tilt sensor 13 to acquire and analyze the signal from the tilt sensor 13. The data transmission module sends the data to the remote end through the 4G network module.

[0053] The tilt sensor 13 is a three-axis tilt accelerometer, model LZT-QJ886, manufactured by Beijing Lanzun Technology Co., Ltd. Multiple tilt sensors 13 are deployed on the slope surface and connected to the equipment box 12 via connecting cables (each equipment box 12 supports 2 to 30 tilt sensors). The tilt sensor 13 monitors changes in the X, Y, and Z angles of the current position. When one or more points simultaneously experience large angle changes, a significant displacement may have occurred in that area. If there are many points with large angle changes, the platform's alarm mechanism will be triggered through the signal acquisition and transceiver module, and the platform will automatically display an alarm notification and send a text message.

[0054] Understandably, a solar panel is fixedly installed on the top of pole 11. The photovoltaic effect of the solar panel can be used to power the power module in conjunction with the power converter.

[0055] To enhance safety during use, a warning sign is installed on pole 11 via a clamp to alert nearby personnel. Additionally, a lightning rod is installed on pole 11, which is connected to the ground via a lead wire.

[0056] The pole 11 has a hollow structure and multiple wire holes on its surface. External connection wires pass through the lower wire holes into the pole 11 and are connected to the equipment box 12, solar panel, etc., respectively, to avoid the wires being exposed.

[0057] During use, place the base 201 on a flat surface, inserting the reinforcing rod into the ground. Then, pass the nailing rod 202 through the base 201 or support 204. Use a hammer or other tools to strike the striking block 209 to insert the nailing rod 202 into the ground, connecting the base 201 to the ground. Then rotate the striking block 209 until the protrusion is in the groove. When the striking block 209 is struck, it causes the connecting rod 205 to descend. The connecting rod 205, in conjunction with the connecting rod 208, drives the positioning plate 203 to rotate. The positioning plate 203 and the nailing rod 202 are set at a certain angle, allowing... Multiple positioning plates 203 are used in conjunction with soil nailing rods 202 to further enhance the firmness of contact with the ground. After the top cover 301 is sleeved with the base 201, the base 102 is placed on the top cover 301. The T-shaped rod 15 passes through the mounting hole of the base 102 and the through hole of the top cover 301 and is inserted into the positioning seat 206. Finally, the handwheel 502 is turned, and the drive gear 503 and the gear ring 509 work together to drive the turntable 302 to rotate. The upper and lower sides of the locking block 303 abut against the notch 207 and the annular groove 401 respectively, so that the top cover 301 and the base 102 are tightly connected to the base 201.

[0058] Implementation 3, see reference Figure 8The tensioning assembly includes a second connecting shaft 504 fixed to the handwheel 502 near the first connecting shaft 501. The second connecting shaft 504 is slidably connected to the end of the first connecting shaft 501. A fixing plate 505 is fixedly connected to the second connecting shaft 504. Several locking blocks 506 are fixedly connected in an annular pattern at equal intervals on one side of the outer surface of the fixing plate 505. The fixing plate 505 is fitted into a fixing seat 507 that is connected and fixed to the top cover 301. A locking groove adapted to the several locking blocks 506 is opened on one side of the inner wall of the fixing seat 507. A return spring 508 is fitted onto the second connecting shaft 504. The two ends of the return spring 508 are respectively connected and fixed to the first connecting shaft 501 and the fixing plate 505.

[0059] The second connecting shaft 504 can slide on the first connecting shaft 501 and maintain the transmission connection. When the second connecting shaft 504 moves and the fixed plate 505 drives the locking block 506 to engage with the slot, the second connecting shaft 504 and the first connecting shaft 501 cannot rotate, and the rotation of the first turntable 302 is restricted. This can prevent the connection between the locking block 303 and the positioning seat 206 and the T-shaped rod 15 from becoming loose, and further improve stability.

[0060] In actual use, a return spring 508 is sleeved on the second coupling 504. The two ends of the return spring 508 are connected and fixed to the first coupling 501 and the fixing plate 505 respectively. When there is no external force, the return spring 508 drives the second coupling 504 to slide outward, which causes the fixing plate 505 to slide towards the fixing seat 507, so that the locking block 506 engages with the locking slot.

[0061] Example 4, see Figures 9-13The unwinding mechanism 3 includes a frame 31 detachably mounted on the upright 11. Slots 32 are provided on both sides of the frame 31, and a reel 33 rotates between the two sets of slots 32. A coil spring 34 is provided in the left slot 32, and the coil spring 34 is located at one end of the reel 33. A linkage mechanism 4 is provided at the end of the reel 33 within the right slot 32. The steel rope 2 includes a folded section 21 and a winding section 22. The total length of the folded section 21 and the winding section 22 is slightly shorter than that of the cable 14. A cavity 331 is provided inside the reel 33, and the folded section 21 passes through the cavity 331. A folded end 211 is provided in the middle of the folded section 21, and a locking mechanism 5 is provided at the folded end 211. The two ends of the folded section 21 are respectively... The system includes a fixed end 213 and a connecting end 214. The fixed end 213 is fixedly connected to the reel 33, and the connecting end 214 is connected to the winding section 22 to form an integral structure. The winding section 22 is wound around the reel 33, and the end of the winding section 22 away from the connecting end 214 is fixedly connected to the tilt sensor 13. In actual use, a ground location with good visibility and stability is selected to pour the ground cage. The upright 11 is reinforced with bolts. When the tilt sensor 13 shifts position due to slope settlement, the steel rope 2 can maintain the physical connection between the tilt sensor 13 and the upright 11. Even if the slope shifts, the continuity and stability of data transmission can be guaranteed. Furthermore, the connection of the steel rope 2 can reduce the tensile load on the cable 14.

[0062] It is worth noting that the total length of the folding section 21 and the winding section 22 is slightly shorter than that of the cable 14. After the folding section 21 and the winding section 22 are unwound, they can pull the tilt sensor 13 to prevent the tilt sensor 13 from continuing to shift and becoming disconnected from the cable 14.

[0063] In practical use, the winding section 22 is first inserted into the cavity 331, and the fixed end 213 is fixedly connected to the roller 33. The fixed connection can be made by using a rope fixing ring, which is fixed to the roller 33 with bolts. The fixed end 213 passes through the rope fixing ring and is fixed by knotting. Then the winding section 22 is wound around the roller 33, and the end of the winding section 22 away from the connecting end 214 is fixedly connected to the tilt sensor 13.

[0064] When the tilt sensor 13 shifts due to the settlement of the slope, it can pull the steel rope 2. At this time, the winding section 22 is unwound by rotating the reel 33, which pulls the tilt sensor 13.

[0065] See Figure 12 , Figures 14-21The linkage mechanism 4 includes a turntable 41 fixed to the end of the scroll 33 and a ratchet 42 coaxially fixed to the turntable 41. A stop mechanism 6 is also provided on the ratchet 42. An arc-shaped base 43 is fixed in the slot 32 on the right side. A pawl 44 is rotatably connected to the arc-shaped base 43. A protrusion 433 is fixed to the arc-shaped base 43. An arc-shaped movable block 45 is slidably connected to the arc-shaped base 43. A slider 451 is fixed to the arc-shaped movable block 45. A groove 431 for limiting the sliding of the slider 451 is provided in the arc-shaped base 43. A first spring 46 is provided between the protrusion 433 and the arc-shaped movable block 45. The pawl 44... A guide rail 441 is provided on the upper part, and a guide block 442 is slidably connected in the guide rail 441. The guide block 442 is connected and fixed to the arc-shaped movable block 45. When the arc-shaped movable block 45 slides relative to the arc-shaped base 43, the guide block 442 can control the rotation of the pawl 44 and lock the ratchet 42 under the sliding action in the guide rail 441. In order to improve the stability of the arc-shaped movable block 45 when sliding on the arc-shaped base 43, a slider 451 is fixed on the arc-shaped movable block 45. A groove 431 is provided in the arc-shaped base 43 for the slider 451 to limit the sliding. The slider 451 is slidably connected in the groove 431 to limit the arc-shaped movable block 45.

[0066] See Figures 18-20The locking mechanism 5 includes a connecting ring 51 disposed at the folded end 211 and a bracket 55 fixed in the slot 32 on the right side. A fixing ring 52 is rotatably connected to one side of the connecting ring 51. A rod 53 and a pull rope 54 are fixed to the side and center of the fixing ring 52, respectively. The end of the rod 53 passes through the bracket 55. A second spring 56 is sleeved on the rod 53 and located between the fixing ring 52 and the bracket 55. A guide ring 551 and a guide wheel 552 are rotatably connected to the bracket 55. The end of the pull rope 54 passes through the guide ring 551 and the guide wheel 552 in sequence and is connected to the slide rod 452. The end of the slide rod 452 is connected and fixed to the slider 451. The arc-shaped base A slide rail 432 is provided on the 43 for the sliding rod 452 to slide in a limited manner. The slide rail 432 is connected to the slide groove 431. An opening 511 is provided on the connecting ring 51. The folding end 211 passes through the opening 511 to form an annular hole 212. When the folding section 21 is subjected to tension, it can pull the connecting ring 51 towards the position of the ratchet 42 through the opening 511. The diameter of the connecting ring 51 is larger than the inner diameter of the cavity 331. When the winding section 22 is completely unwound, the folding section 21 is subjected to tension from the tilt sensor 13. The tension of the folding section 21 pulls the connecting ring 51, the fixing ring 52, the insert rod 53, and the pull rope 54 to move. At this time, the pull rope 54 pulls the sliding rod 452 to slide along the slide rail 432, thereby controlling the arc-shaped movable part. The movable block 45 slides relative to the arc-shaped base 43. During the sliding process, the pawl 44 is driven to rotate by the cooperation of the guide rail 441 and the guide block 442, so that the pawl 44 locks the ratchet 42. By using the displacement of the folded section 21 in the cavity 331 to control the locking of the ratchet 42 by the movable block 45, the maximum displacement of the tilt sensor 13 can be limited, preventing the tilt sensor 13 from moving excessively due to slope settlement and exceeding the monitoring range. Under the guidance of the guide ring 551 and the guide wheel 552, the pulling direction of the pull rope 54 can be positioned, so that the pull rope 54 can move along the direction of the pull rope 54 after being pulled, and under the action of the guide wheel 552 The pull rope 54 guides the movement of the folding section 21. In actual use, after the winding section 22 is unwound, the folding section 21 is pulled and moves the connecting ring 51. At the same time, the fixing ring 52, the insert rod 53, and the pull rope 54 move towards the ratchet 42. The pull rope 54 pulls the slide rod 452 and makes the slide rod 452 slide along the slide rail 432, thereby controlling the arc-shaped movable block 45 to slide on the arc-shaped base 43. The sliding of the arc-shaped movable block 45 controls the guide block 442 to move within the guide rail 441 and controls the pawl 44 to rotate. As the pawl 44 rotates, it engages with the ratchet 42, thereby controlling the ratchet 42 to lock, so that the winding shaft 33 stops rotating and no longer unwinds the folding section 21.

[0067] See Figure 21 The stopping mechanism 6 includes a stopping pawl 61 rotatably connected to the ratchet 42, a fixing block 62 fixed to the ratchet 42, and a third spring 63 disposed between the fixing block 62 and the stopping pawl 61. One end of the stopping pawl 61 is rotatably connected to the ratchet 42 via a rotating shaft 611, and the other end of the stopping pawl 61 is designed with a slope. By providing the stopping pawl 61, when the slope experiences significant settlement or collapse, and the tilt sensor 13 deviates rapidly, the winding section 22 will also deviate due to the rapid displacement of the tilt sensor 13. Accelerating the unwinding process causes the stop pawl 61 to be thrown out by centrifugal force. As the ratchet 42 rotates, the stop pawl 61 comes into contact with the arc-shaped movable block 45, thereby controlling the sliding of the arc-shaped movable block 45. This causes the arc-shaped movable block 45 to drive the ratchet 44 to rotate and lock the ratchet 42 in time. By quickly locking the steel rope 2, the tilt sensor 13 can be prevented from being lost or buried due to slope collapse. By restraining the tilt sensor 13, the system can still provide key data in emergency situations such as slope collapse, thus enhancing the safety of the monitoring system.

[0068] In practical use, when the tilt sensor 13 shifts rapidly due to a large-scale settlement or collapse of the slope, the winding section 22 will also accelerate its unwinding due to the rapid displacement of the tilt sensor 13. At this time, the winding shaft 33 drives the turntable 41 and ratchet 42 to rotate rapidly. Under the action of centrifugal force, the stop pawl 61 can be thrown out. As the ratchet 42 continues to rotate, the stop pawl 61 comes into contact with the arc-shaped movable block 45 and abuts against the arc-shaped movable block 45. At this time, the arc-shaped movable block 45 is controlled to slide, so that the slider 451 slides along the slide groove 431. With the sliding of the arc-shaped movable block 45 and the cooperation of the guide rail 441 and the guide block 442, the ratchet 44 rotates and controls the ratchet 42 to lock, so that the winding shaft 33 stops rotating and no longer unwinds.

[0069] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A deep foundation pit displacement monitoring device, comprising monitoring equipment (1), wherein the monitoring equipment (1) comprises a pole (11), an equipment box (12), and an inclination sensor (13), characterized in that: The equipment box (12) is mounted on the upright (11). The bottom of the upright (11) is provided with a base (102). The bottom of the base (102) is connected to the support positioning mechanism. The tilt sensor (13) is connected to the equipment box (12) by a cable (14). A steel rope (2) is provided between the tilt sensor (13) and the upright (11). The upright (11) is provided with a winding mechanism (3) that cooperates with the steel rope (2). The support positioning mechanism includes a base (201) and a top cover (301) that is inserted into the base (201). Several T-shaped components are inserted into the base (102). The T-shaped rod (15) has an annular groove (401) on one side of its lower end. The bottom of the base (201) is fixedly connected with several positioning seats (206) that are inserted into the T-shaped rod (15) at equal intervals in a ring. The lower end of the T-shaped rod (15) extends through the base (102) and the top cover (301) into the base (201) and is inserted into the positioning seat (206). The positioning seat (206) has a notch (207) that mates with the annular groove (401). The bottom of the base (201) is fixedly connected with several support seats (207) at equal intervals in a ring. 4) The support base (204) and the positioning base (206) are staggered. A soil nailing rod (202) is inserted into the bottom center of the base (201) and inside the support base (204). A striking block (209) is inserted into the top of the soil nailing rod (202). A turntable (302) is rotatably connected to the bottom center of the top cover (301). Several locking blocks (303) and several limiting plates (304) are evenly fixed on the outer circumference of the turntable (302). The locking blocks (303) and the limiting plates (304) are staggered. The locking blocks (303) have a trapezoidal structure. The locking block (303) cooperates with the notch (207) and the annular groove (401), and the limiting plate (304) abuts against the outer surface of the striking block (209); a connecting shaft (501) is rotatably connected to one side of the outer circumference of the top cover (301), and one end of the connecting shaft (501) is connected to the handwheel (502) through a tensioning component. A drive gear (503) is fixedly connected to one end of the connecting shaft (501) inside the top cover (301), and a gear ring (509) meshes on the drive gear (503). The gear ring (509) is connected and fixed to the turntable (302).

2. The deep foundation pit displacement monitoring device according to claim 1, characterized in that, The soil nailing rod (202) has a hollow structure. Several through holes are evenly opened at the lower end of the outer circumference of the soil nailing rod (202). A positioning plate (203) is hinged in the through holes. A connecting rod one (205) is slidably connected in the soil nailing rod (202). A connecting rod two (208) is hinged between the connecting rod one (205) and the positioning plate (203). The striking block (209) is inserted and fitted at the top opening of the soil nailing rod (202). The bottom end of the striking block (209) penetrates into the soil nailing rod (202) and is rotatably connected to the end of the connecting rod one (205).

3. The deep foundation pit displacement monitoring device according to claim 2, characterized in that, The tensioning assembly includes a second connecting shaft (504) fixed to the handwheel (502) near the first connecting shaft (501). The second connecting shaft (504) is slidably connected to the end of the first connecting shaft (501). A fixing plate (505) is fixedly connected to the second connecting shaft (504). Several locking blocks (506) are fixedly connected in an annular pattern on one side of the outer surface of the fixing plate (505). The fixing plate (505) is fitted into a fixing seat (507) that is connected and fixed to the top cover (301). A slot is provided on one side of the inner wall of the fixing seat (507) to match the locking blocks (506). A return spring (508) is fitted on the second connecting shaft (504). The two ends of the return spring (508) are respectively connected and fixed to the first connecting shaft (501) and the fixing plate (505).

4. The deep foundation pit displacement monitoring device according to claim 3, characterized in that, The unwinding mechanism (3) includes a frame (31) detachably mounted on the upright (11). The frame (31) has slots (32) on both sides. A roller (33) rotates between the two sets of slots (32). A coil spring (34) is provided in the slot (32) on the left side. The coil spring (34) is located at one end of the roller (33). The roller (33) has a linkage mechanism (4) at the end of the right slot (32). The steel rope (2) includes a folding section (21) and a winding section (22). A cavity (331) is provided inside the spool (33). The folding section (21) passes through the cavity (331). A folding end (211) is provided in the middle of the folding section (21). A locking mechanism (5) is provided at the folding end (211). The two ends of the folding section (21) are a fixed end (213) and a connecting end (214), respectively. The fixed end (213) is fixedly connected to the spool (33). The connecting end (214) is connected to the winding section (22) to form an integral structure. The winding section (22) is wound on the spool (33). The end of the winding section (22) away from the connecting end (214) is fixedly connected to the tilt sensor (13).

5. The deep foundation pit displacement monitoring device according to claim 4, characterized in that, The linkage mechanism (4) includes a turntable two (41) fixed to the end of the scroll (33) and a ratchet (42) coaxially fixed to the turntable two (41). The ratchet (42) is also provided with a stop mechanism (6). An arc-shaped base (43) is fixed in the slot (32) on the right side. A pawl (44) is rotatably connected to the arc-shaped base (43). A protrusion (433) is fixed to the arc-shaped base (43). An arc-shaped movable block is also slidably connected to the arc-shaped base (43). 45), a slider (451) is fixed on the arc-shaped movable block (45), a groove (431) is provided in the arc-shaped base (43) for the slider (451) to limit the sliding, a first spring (46) is provided between the protrusion (433) and the arc-shaped movable block (45), a guide rail (441) is provided on the pawl (44), a guide block (442) is slidably connected in the guide rail (441), and the guide block (442) is connected and fixed to the arc-shaped movable block (45).

6. The deep foundation pit displacement monitoring device according to claim 5, characterized in that, The locking mechanism (5) includes a connecting ring (51) disposed at the folded end (211) and a bracket (55) fixed in the slot (32) on the right side. A fixing ring (52) is rotatably connected to one side of the connecting ring (51). A plug rod (53) and a pull rope (54) are fixed to the side and center of the fixing ring (52) respectively. The end of the plug rod (53) passes through the bracket (55). A second spring is sleeved on the plug rod (53) and located between the fixing ring (52) and the bracket (55). The spring (56) is fixedly connected to the bracket (55) and the guide ring (551) and the guide wheel (552) are rotatably connected respectively. The end of the pull rope (54) passes through the guide ring (551) and the guide wheel (552) in sequence and is connected to the slide rod (452). The end of the slide rod (452) is connected and fixed to the slider (451). The arc-shaped base (43) is provided with a slide rail (432) for the slide rod (452) to limit the sliding. The slide rail (432) is connected to the slide groove (431).

7. A deep foundation pit displacement monitoring device according to claim 6, characterized in that, The stopping mechanism (6) includes a stop pawl (61) rotatably connected to the ratchet (42), a fixing block (62) fixed to the ratchet (42), and a third spring (63) disposed between the fixing block (62) and the stop pawl (61). One end of the stop pawl (61) is rotatably connected to the ratchet (42) via a rotating shaft (611), and the other end of the stop pawl (61) is designed with a bevel.

8. The deep foundation pit displacement monitoring device according to claim 7, characterized in that, The connecting ring (51) has an opening (511), and the folded end (211) passes through the opening (511) to form an annular hole (212).

9. A deep foundation pit displacement monitoring device according to claim 8, characterized in that, The total length of the folded section (21) and the winding section (22) is slightly shorter than that of the cable (14).

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