A foundation pit monitoring and positioning device based on Beidou positioning

Abstract

The application relates to the technical field of monitoring devices, and more specifically discloses a foundation pit monitoring and positioning device based on Beidou positioning, which comprises a monitoring and positioning main body, the monitoring and positioning main body comprises a positioning shell main body, fixing device placing grooves are arranged on the two sides of the positioning shell main body, a rope storage rack is fixedly connected inside the positioning shell main body, supporting sliding grooves are arranged on the two sides of the back of the inside of the positioning shell main body, and locking devices are fixedly connected on the two sides of the inside of the positioning shell main body; the monitoring and positioning main body and the rope are arranged, the intelligent detection system and the monitoring and positioning device are mutually matched to increase the foundation pit surface monitoring distance, the detection time is reasonably distributed, the auxiliary supporting effect is increased, the construction point is positioned by using the self-positioning function, the subsequent construction position is accurate, the monitoring device cost is reduced, and the device operation difficulty is reduced under the condition of improving the monitoring range.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of monitoring devices, more particularly to a foundation pit monitoring and positioning device based on Beidou positioning. BACKGROUND

[0002] A foundation pit is a soil pit excavated at the foundation design position according to the foundation elevation and the foundation plane size. In order to ensure the safety of construction, it is necessary to continuously monitor the foundation pit. Foundation pit monitoring refers to various observation and analysis work on the changes of the rock-soil properties, support structure displacement and surrounding environmental conditions during the excavation of the foundation pit and the construction of underground projects, the prediction of the development of the surface deformation and the stable state of the foundation pit caused by further construction, the guidance of the design and construction through the analysis of the feedback results, and the realization of so-called informationized construction.

[0003] At present, the monitoring device commonly used in foundation pit monitoring is composed of a support structure, an alarm device, a support frame and a buffer frame. When the foundation pit deviates or collapses, the support frame is pushed to the side of the buffer frame by the side surface of the foundation pit, and the alarm device is started at the same time under the condition of increasing the support force, warning the on-site personnel to pay attention to the construction safety and maintaining the support frame in time.

[0004] At present, the foundation pit monitoring alarm device generally has two starting modes. One is to use the tilting force of the support frame to start the alarm device by connecting the internal circuit, and the other is to use the sensor to start. The sensor is installed to monitor each monitoring point of the foundation pit at a fixed interval of time, and the alarm device is started by comparing the offset threshold. However, since the position and time of the foundation pit collapse are random, the first monitoring method is more accurate for short-distance single-point short-distance monitoring, but it does not have good monitoring means for small-range collapse of the foundation pit not at the monitoring point, so that the early warning ability is weak. Increasing the monitoring points to improve the early warning effect will greatly increase the cost. The second monitoring method has high accuracy and low cost, but it has the defects of large energy consumption burden due to long-time uninterrupted start and stop, and the collapse occurring in the detection time interval has a response time that is not timely, which cannot achieve timely early warning. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the present application provides a foundation pit monitoring and positioning device based on Beidou positioning to solve the problems in the background art.

[0006] The application provides the following technical scheme: a foundation pit monitoring and positioning device based on Beidou positioning, comprising a monitoring and positioning main body, the monitoring and positioning main body comprises a positioning shell main body, fixing device placing grooves are formed in the two sides of the positioning shell main body, a rope storage rack is fixedly connected to the inside of the positioning shell main body, support sliding grooves are formed in the two sides of the back of the inside of the positioning shell main body, a locking device is fixedly connected to the two sides of the inside of the positioning shell main body, a self-locking fixing device is movably connected to the inside of the locking device, a monitoring starting device is fixedly connected to the bottom of the locking device in the inside of the monitoring and positioning main body, a rotating recovery rod is fixedly connected to the inside of the rope storage rack, indicator lamps are fixedly connected to the two sides of the top of the monitoring and positioning main body, a support fastening device is fixedly connected to the back of the inside of the positioning shell main body, a support connecting frame is fixedly connected to the back of the monitoring and positioning main body, connecting fixing devices are fixedly connected to the inside of the fixing device placing grooves in the two sides of the positioning shell main body, and ropes are installed on the top and the bottom of the outside of the rope storage rack.

[0007] The locking device comprises a locking box body, a longitudinal control device is movably connected to the top of the locking box body, the locking box body comprises a locking shell, transmission holes are formed in the two sides of the locking shell, a longitudinal operation hole is formed in the top of the locking shell, a biasing groove is formed in the back of the locking shell, a detection sliding groove is formed in the bottom of the locking shell, a spring placing groove is formed in one side of the inside of the locking shell, the longitudinal control device comprises a longitudinal operating rod, a bottom pressure block is fixedly connected to the bottom of the longitudinal operating rod, and an inclined surface sliding groove is formed in the front of the bottom pressure block.

[0008] Further, the self-locking fixing device comprises a self-locking sleeve, a displacement inclined plate is fixedly connected to the outside of the self-locking sleeve, a side surface sliding groove is formed in one side of the self-locking sleeve, a rope conveying hole is formed in the other side of the self-locking sleeve, self-locking fixing rods are fixedly connected to the periphery of the rope conveying hole on the other side of the self-locking sleeve, a second-order spring is fixedly connected to the other side of the self-locking fixing rod, a rope fixing ring is movably connected to one side of the self-locking sleeve, side plate sliding blocks are fixedly connected to the front and the back of the rope fixing ring, and a support connecting block is fixedly connected to the back of the side plate sliding block.

[0009] Further, the monitoring starting device comprises a monitoring box, a metal rod is fixedly connected to the other side of the inside of the monitoring box, a detection spring is fixedly connected to the outside of the metal rod, a mobile detection box is movably connected to one side of the inside of the monitoring box, a detection fixing frame is fixedly connected to the top of the mobile detection box, a detection horizontal rod is fixedly connected to the other side of the mobile detection box, the support fastening device comprises a support sliding block, a rotating frame is fixedly connected to the back of the support sliding block, and a wear-resistant plate is fixedly connected to the back of the rotating frame.

[0010] Further, the information processing device is installed on the top of the locking device inside the monitoring positioning body, the control module and the judgment module are installed inside the information processing device, the elastic ring is installed on the outside of the longitudinal operating rod inside the information processing device, the slope is arranged on the top of the inclined sliding groove, the rotating recovery rod is installed inside the rope storage rack, the rolling bearing is installed on the outside of the rotating recovery rod, and one end of the extension rope is fixed to the outside of the rope storage rack.

[0011] Further, the top of the displacement inclined plate is a 45-degree slope, the width of the displacement inclined plate is half of the width of the inclined sliding groove, the first-order spring is installed inside the self-locking fixing rod, the maximum force applied to the self-locking sleeve by the first-order spring is 50N, the resultant force generated by the four second-order springs when the displacement inclined plate moves to the inner wall is 400N, and the support connecting block is fixedly connected with the support fastening device through the fixing pin.

[0012] Further, the pressure sensor is installed inside the movement detection box, the sliding groove is arranged on the top of the detection fixing frame, the width of the sliding groove is the same as that of the sliding groove at the bottom of the bottom pressing block, the support sliding block is installed inside the support sliding groove, and the two side support fastening devices are mirror-imaged arranged inside the monitoring positioning body.

[0013] Further, the contraction groove is arranged at the bottom of the rope fixing ring.

[0014] Further, the material of the rope is polyester fiber material, the total length of the rope is 12 meters, the effective use length is 10 meters, and the support frame is installed on the support frame every five meters.

[0015] Further, the intelligent control monitoring system comprises a collection module, a control module, a judgment module and a response module, the collection module is used for collecting the instantaneous pressure value when the metal rod contacts the detection horizontal rod by using the pressure sensor, the control module is used for controlling the start and stop of the sound wave ranging device and the start and stop of the Beidou positioning device, the judgment module is used for analyzing various monitoring values, including comparing the instantaneous pressure value with the threshold value, comparing the sound wave detection distance with the initial value, and comparing the single-point positioning point with the initial value offset, and the response module is used for controlling the response of the early warning unit according to the monitoring value analysis result, specifically including starting the fault alarm, the first-level alarm and the second-level alarm.

[0016] The technical effects and advantages of the present application are as follows:

[0017] 1. The present application is provided with a monitoring positioning body and a rope, which is beneficial to the intelligent detection system and the monitoring positioning device to cooperate with each other to increase the foundation pit surface monitoring distance, reasonably allocate the detection time, increase the auxiliary support effect, and position the construction point by using the self-positioning function, accurately position the subsequent construction position, and reduce the cost of the monitoring device, and reduce the device operation difficulty under the condition of improving the monitoring breadth.

[0018] 2. The present application is advantageous for fixing the rope fixing ring and the self-locking sleeve to achieve the purpose of locking the rope by pressing down when installing the rope, and is advantageous for separating the self-locking sleeve from the rope fixing ring to achieve the purpose of releasing the rope fixing when completing the cleaning work after an accident occurs, facilitating the reuse of subsequent devices.

[0019] 3. The present application is advantageous for self-locking the rope to play a supporting and relieving role when a collapse accident occurs, and simultaneously starting the detection program to timely detect the on-site situation and transmit information, increasing the breadth of foundation pit monitoring while improving the timeliness and accuracy of information transmission.

[0020] 4. The present application is advantageous for combining with the on-site support frame to make them interact with each other, increasing the supporting and buffering effect when a collapse accident occurs, giving the on-site workers more reaction time, further ensuring the safety of the site, and at the same time, the combination with the existing support frame is advantageous for reducing the cost of the monitoring device and increasing the practicality of the monitoring device. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present application.

[0022] Figure 2 is a cross-sectional view of the overall structure of the present application.

[0023] Figure 3 is a schematic diagram of the detection and positioning main body structure of the present application.

[0024] Figure 4 is a schematic diagram of the locking device structure of the present application.

[0025] Figure 5 is a cross-sectional view of the locking device structure of the present application.

[0026] Figure 6 is a schematic diagram of the locking box structure of the present application.

[0027] Figure 7 is a schematic diagram of the longitudinal control device structure of the present application.

[0028] Figure 8 is a schematic diagram of the self-locking fixing device structure of the present application.

[0029] Figure 9 is a schematic diagram of the rope fixing ring structure of the present application.

[0030] Figure 10 is a flowchart of the intelligent monitoring and control system of the present application.

[0031] The figure marks are: 1, monitoring positioning main body; 101, positioning shell main body; 102, fixator placing groove; 103, rope storage rack; 104, support sliding groove; 2, locking device; 201, locking box body; 2011, locking shell; 2012, transmission hole; 2013, longitudinal operation hole; 2014, biasing groove; 2015, spring placing groove; 2016, detection sliding groove; 202, longitudinal control device; 2021, longitudinal operating rod; 2022, bottom pressing block; 2023, inclined sliding groove; 3, self-locking fixing device; 301, self-locking sleeve; 302, side sliding groove; 303, displacement inclined plate; 304, rope conveying hole; 305, self-locking fixing rod; 306, second-order spring; 307, rope fixing ring; 308, side plate sliding block; 309, support connecting block; 4, monitoring starting device; 401, monitoring box; 402, metal rod; 403, detection spring; 404, movement detection box; 405, detection fixing frame; 406, detection horizontal rod; 5, rotary recovery rod; 6, indicator light; 7, support fastening device; 701, support sliding block; 702, rotary frame; 703, wear-resistant plate; 8, support connecting frame; 9, connecting fixator. DETAILED DESCRIPTION

[0032] The technical solutions in the application will be described clearly and completely below in combination with the drawings in the application, and additionally, the forms of each structure described in the following embodiments are only examples, and the base pit monitoring positioning device based on Beidou positioning involved in the application is not limited to each structure described in the following embodiments, and all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the application.

[0033] Reference Figures 1-6 The application provides a base pit monitoring positioning device based on Beidou positioning, which comprises a monitoring positioning main body 1, the monitoring positioning main body 1 comprises a positioning shell main body 101, the two sides of the positioning shell main body 101 are provided with fixator placing grooves 102, the inside of the positioning shell main body 101 is fixedly connected with a rope storage rack 103, the back of the inside of the positioning shell main body 101 is provided with support sliding grooves 104 on the two sides, the two sides of the inside of the positioning shell main body 101 are fixedly connected with locking devices 2, the inside of the locking device 2 is movably connected with a self-locking fixing device 3, the bottom of the inside of the monitoring positioning main body 1 located at the locking device 2 is fixedly connected with a monitoring starting device 4, the inside of the rope storage rack 103 is fixedly connected with a rotary recovery rod 5, the top of the two sides of the monitoring positioning main body 1 is fixedly connected with indicator lights 6, the back of the inside of the positioning shell main body 101 is fixedly connected with a support fastening device 7, the back of the monitoring positioning main body 1 is fixedly connected with a support connecting frame 8, and the inside of the fixator placing grooves 102 located at the two sides of the positioning shell main body 101 is fixedly connected with connecting fixators 9.

[0034] The locking device 2 comprises a locking box body 201, the top of the locking box body 201 is movably connected with a longitudinal control device 202, the locking box body 201 comprises a locking shell 2011, transmission holes 2012 are formed in the two sides of the locking shell 2011, a longitudinal operation hole 2013 is formed in the top of the locking shell 2011, a biasing groove 2014 is formed in the back of the locking shell 2011, a detection sliding groove 2016 is formed in the bottom of the locking shell 2011, a spring placing groove 2015 is formed in one side of the inside of the locking shell 2011, the longitudinal control device 202 comprises a longitudinal operating rod 2021, the bottom of the longitudinal operating rod 2021 is fixedly connected with a bottom pressing block 2022, an inclined surface sliding groove 2023 is formed in the front of the bottom pressing block 2022;

[0035] In the embodiment, it needs to be specifically explained that the main difference between the embodiment and the prior art is that the monitoring positioning device and the intelligent control monitoring system are matched to increase the foundation pit monitoring distance, reasonably allocate the detection time, and increase the auxiliary supporting effect in the embodiment, and the specific difference lies in the locking device 2, the self-locking fixing device 3 and the monitoring starting device 4.

[0036] The above structure is the main structure of the embodiment, solves the problems that the current foundation pit monitoring distance is short, the foundation pit surface subtle change monitoring capability is not possessed, and the joint early warning capability of the foundation pit collapse points is poor, and the support connecting frame 8 and the connecting fixer 9 are the existing structures, the specific structure and the connecting mode of the connecting fixer 9 are not described in the embodiment, in addition, the installation mode of the sensor, the sound wave range finder, the alarm device and the control module also belongs to the prior art, therefore, the application is not explained in detail.

[0037] Reference Figures 8-9 The self-locking fixing device 3 comprises a self-locking sleeve 301, displacement inclined plates 303 are fixedly connected to the outside of the self-locking sleeve 301, a side sliding groove 302 is formed in one side of the self-locking sleeve 301, a rope conveying hole 304 is formed in the other side of the self-locking sleeve 301, self-locking fixing rods 305 are fixedly connected to the periphery of the rope conveying hole 304 on the other side of the self-locking sleeve 301, second-order springs 306 are fixedly connected to the other side of the self-locking fixing rods 305, rope fixing rings 307 are movably connected to one side of the self-locking sleeve 301, side plate sliding blocks 308 are fixedly connected to the front and back of the rope fixing rings 307, and support connecting blocks 309 are fixedly connected to the back of the side plate sliding blocks 308.

[0038] In this embodiment, it needs to be specifically pointed out that: the information processing device is installed at the top of the locking device 2 inside the monitoring positioning main body 1, the control module and the judgment module are installed inside the information processing device, the elastic ring is installed inside the information processing device outside the longitudinal operating rod 2021, the elastic ring always keeps the longitudinal operating rod 2021 in the rising state in the normal state, the mobile slot is opened at the bottom of the inclined sliding groove 2023 on one side of the bottom pressing block 2022, the width of the mobile slot is greater than the width of the top of the inclined sliding groove 2023, which is beneficial to the movement of the displacement inclined plate 303 to the bottom of the inclined sliding groove 2023 under the action of the second-order spring 306 in the normal state, and does not affect the movement of the displacement inclined plate 303 to the outside of the bottom pressing block 2022 through the mobile slot under the stretching action after the rope fixing has tension, the top of the inclined sliding groove 2023 is provided with an inclined surface, when the other end of the rope is fixed on the connecting fixer 9, the longitudinal operating rod 2021 is lowered, the inclined sliding groove 2023 interacts with the displacement inclined plate 303 to make it move to one side, so that the rope fixing ring 307 is fixed in the inside of the self-locking sleeve 301, the length of the rope is fixed, and the supporting capacity is provided, the inside of the rope storage rack 103 is provided with the rotating recovery rod 5, the outside of the rotating recovery rod 5 is provided with the rolling bearing, one end of the extended rope is fixed outside the rope storage rack 103, the rope is made of polyester fiber material, the total length of the rope is 12 meters, and the effective use length is 10 meters. In use, support frames need to be installed every five meters to reduce the elastic deformation of the rope in the curved support state and moderately increase the elastic strength of the polyester fiber.

[0039] The top of the displacement inclined plate 303 is a 45-degree inclined surface, the width of the displacement inclined plate 303 is half of the width of the inclined sliding groove 2023, the inside of the self-locking fixing rod 305 is provided with a first-order spring, the maximum value of the force exerted by the first-order spring on the self-locking sleeve 301 is 50N, the first-order spring keeps the detection horizontal rod 406 separated from the metal rod 402 in the normal state of the rope fixing and makes the displacement inclined plate 303 generate a certain distance to the inner wall, when the displacement inclined plate 303 moves to the inner wall, the resultant force generated by the four second-order springs 306 is 400N, the support connecting block 309 is fixedly connected with the support fastening device 7 through the fixing pin, and the bottom of the rope fixing ring 307 is provided with a contraction slot. When the tension is applied, the rope fixing ring 307 moves to the inside of the self-locking sleeve 301, and the inside diameter is reduced under the action of the contraction slot, so as to play a rope locking role.

[0040] Reference Figures 4-7The monitoring starting device 4 comprises a monitoring box 401, another side of the inside of the monitoring box 401 is fixedly connected with a metal rod 402, the outside of the metal rod 402 is fixedly connected with a detection spring 403, one side of the inside of the monitoring box 401 is movably connected with a moving detection box 404, the top of the moving detection box 404 is fixedly connected with a detection fixing frame 405, the other side of the moving detection box 404 is fixedly connected with a detection horizontal rod 406, and the supporting fastening device 7 comprises a supporting sliding block 701, the back of the supporting sliding block 701 is fixedly connected with a rotating frame 702, and the back of the rotating frame 702 is fixedly connected with a wear-resistant plate 703.

[0041] In the embodiment, it is necessary to be specifically explained that the inside of the moving detection box 404 is provided with a pressure sensor for measuring the pressure when the metal rod 402 is in contact with the detection horizontal rod 406, the top of the detection fixing frame 405 is provided with a sliding groove, the width of the sliding groove is the same as the width of the sliding groove at the bottom of the bottom pressing block 2022, so that the reciprocating movement of the displacement inclined plate 303 is not hindered, the supporting sliding block 701 is arranged in the inside of the supporting sliding groove 104, and the two supporting fastening devices 7 are mirror-distributed in the inside of the monitoring positioning main body 1, so that the supporting capacity is ensured in the case that a collapse accident occurs at any position.

[0042] Referring to Figure 10 The intelligent control monitoring system comprises a collection module, a control module, a judgment module and a response module, the collection module is used for collecting the instantaneous pressure value when the metal rod 402 is in contact with the detection horizontal rod 406 by using a pressure sensor, the control module is used for controlling the start and stop of the sound wave ranging device and the Beidou positioning device, the judgment module is used for analyzing various monitoring values, including comparing the instantaneous pressure value with a threshold value, comparing the sound wave detection distance with an initial value, and comparing the single-point positioning point with an initial value offset, and the response module is used for controlling the response of the early warning unit according to the monitoring value analysis result, and specifically includes starting a fault alarm, a first-level alarm and a second-level alarm.

[0043] In the embodiment, it is necessary to be specifically explained that the fault alarm is started when the instantaneous pressure value does not reach the threshold value, the distance and the initial value do not reach the threshold value, and the offset does not reach the threshold value, so that the metal rod 402 is in long-time contact with the detection horizontal rod 406, the second-level alarm is started when the instantaneous pressure value exceeds 200N, the distance and the initial value exceed 2CM, or the single monitoring point offset exceeds 5CM, and the first-level alarm is started when the instantaneous pressure value exceeds 200N, the distance and the initial value exceed 2CM, and the single monitoring point offset exceeds 5CM, and the three conditions reach two or more.

[0044] The working principle of the application is as follows:

[0045] The main problem solved by the embodiment is that the monitoring and positioning device and the intelligent control monitoring system are used to increase the monitoring distance of the foundation pit, reasonably allocate the detection time, increase the auxiliary support effect, solve the problem that the monitoring distance of the foundation pit is short and the monitoring ability of the fine changes on the surface of the foundation pit is not good, and the joint early warning ability of each point of the foundation pit collapse is poor.

[0046] The specific steps are as follows: installation process: the monitoring and positioning main body 1 is fixed on the foundation pit support frame monitoring position by the support connecting frame 8, then the connecting fixer 9 is taken out and fixed on the support frame, the distance between the connecting fixer 9 and the monitoring and positioning main body 1 is 10 meters, a fixed point is set every 5 meters to provide support, the rope fixed on the rope storage rack 103 is pulled out to the two sides, passes through the fixer placing groove 102 and is fixed on the connecting fixer 9, since the two sides of the connecting fixer 9 are provided with connecting points, when the foundation pit collapse deviates at any point, the force is generated on the two sides of the monitoring and positioning main body 1.

[0047] Pre-setting process: press the longitudinal control device 202, the longitudinal control device 202 moves downward, the initial value of the top positioning device of the locking device 2 and the monitoring device is preset, since the displacement inclined plate 303 is located in the inside of the inclined surface sliding groove 2023 at this time, the displacement inclined plate 303 is pushed to move to one side in the process of the downward movement of the longitudinal control device 202, so that the rope fixing ring 307 is fixed in the inside of the self-locking sleeve 301 to play the role of rope tightening, and the length of the rope is fixed.

[0048] Starting process: when the collapse occurs, the support frame on the surface of the foundation pit is pushed to be inclined, the external rope is subjected to tension, the self-locking fixing device 3 in the inside of the locking device 2 is pulled to move to the other side, the displacement inclined plate 303 enters the other side of the bottom pressing block 2022 from the position of the inclined surface sliding groove 2023 and moves to the inner wall, the rope fixing ring 307 drives the movement detection box 404 to move to the other side synchronously so that the detection horizontal rod 406 contacts the metal rod 402, three-point distance measurement is started, the three monitoring points are used to measure the distance by sound wave, the instantaneous relative positions of the three are compared with the difference value of the initial value, if the difference value is greater than 2 cm, the alarm device is started to alarm, reminding the on-site staff that the accident will occur, since the rope is in a fixed and locked state at this time, a certain supporting force is provided in the inside of the support frame, which can play a certain relief effect, increase the reaction time of the staff, at the same time, when the rope pulls the rope fixing ring 307 to move, the support fastening device 7 is rotated by the support connecting block 309 to make the wear-resistant plate 703 play a secondary locking on the monitoring point support frame, the inclination force of the collapse point is decomposed to the support frame at the monitoring point, which can realize the linkage support and increase the supporting effect.

[0049] Recovery process: after the completion of the site accident cleaning, the displacement inclined plate 303 is in contact with the inner wall, the rope fixing ring 307 is at the bottom of the bottom pressing block 2022 on the other side, at this time press the longitudinal operating rod 2021, the rope fixing ring 307 is in the bottom pressing block 2022 Under the joint action of the detection fixture 405, move to one side to realize the separation with the self-locking sleeve 301, the rope can move in the transmission hole 2012, pull out the remaining part, which is conducive to the disassembly of the site support structure including the support frame and the rope, and rotating the rotary recovery rod 5 is conducive to recycling the rope for reuse.

[0050] Secondly, it also solves the problem that the fixed end is easy to slide when the rope is supported;

[0051] When the rope is subjected to tensile force and has a stretching tendency, the support connecting block 309 moves to one side to drive the support sliding block 701 to move, under the rotation force provided by the rotating frame 702, the wear-resistant plate 703 moves reversely and has a tendency to move outward, the static friction of the contact point of the wear-resistant plate 703 and the support frame increases, the fixing effect increases, and the linkage support capacity between the support frames is improved;

[0052] Secondly, it also solves the problem that the early warning information cannot be accurate, and the personnel pulling the rope leads to the false touch event;

[0053] In the starting stage, since the metal rod 402 is provided with a pressure sensor, the sensor compares the instantaneous pressure value with the threshold value at the moment when the metal rod 402 contacts with the detection horizontal rod 406, if the force exceeds 200N, the distance is measured and then the alarm is directly given, if it is lower than 200N, the distance is measured, and according to the measurement result, it is judged whether the displacement of the monitoring point occurs to decide whether to alarm, if it is in the low force state for more than 3 minutes, the device gives a fault indication to remind the staff to handle in time, so as to avoid the inaccuracy of the monitoring value caused by the broken stone or the site equipment.

Claims

1. A foundation pit monitoring and positioning device based on BeiDou positioning, comprising a monitoring and positioning main body (1), characterized in that: The monitoring and positioning main body (1) includes a positioning outer shell (101), with fixing slots (102) on both sides of the positioning outer shell (101), a rope storage rack (103) fixedly connected inside the positioning outer shell (101), support sliding grooves (104) on both sides of the back of the positioning outer shell (101), a locking device (2) fixedly connected inside the positioning outer shell (101), a self-locking fixing device (3) movably connected inside the locking device (2), and the monitoring and positioning main body (1) located at the bottom of the locking device (2). The monitoring and starting device (4) is fixedly connected to the part, the rotating recovery rod (5) is fixedly connected inside the rope storage rack (103), the indicator lights (6) are fixedly connected to both sides of the top of the monitoring and positioning main body (1), the support and fastening device (7) is fixedly connected to the back inside the positioning shell main body (101), the support connecting frame (8) is fixedly connected to the back of the monitoring and positioning main body (1), the connecting fasteners (9) are fixedly connected inside the fastener placement slots (102) on both sides of the positioning shell main body (101), and ropes are installed on the top and bottom of the outer side of the rope storage rack (103). The locking device (2) includes a locking housing (201), a longitudinal control device (202) is movably connected to the top of the locking housing (201), the locking housing (201) includes a locking outer shell (2011), transmission holes (2012) are provided on both sides of the locking outer shell (2011), a longitudinal operation hole (2013) is provided on the top of the locking outer shell (2011), an offset groove (2014) is provided on the back of the locking outer shell (2011), a detection sliding groove (2016) is provided at the bottom of the locking outer shell (2011), a spring placement groove (2015) is provided on one side inside the locking outer shell (2011), the longitudinal control device (202) includes a longitudinal operating lever (2021), a bottom pressure block (2022) is fixedly connected to the bottom of the longitudinal operating lever (2021), and a sloping sliding groove (2023) is provided on the front of the bottom pressure block (2022). The self-locking fixing device (3) includes a self-locking sleeve (301), a displacement inclined plate (303) is fixedly connected to the outside of the self-locking sleeve (301), a side sliding groove (302) is provided on one side of the self-locking sleeve (301), a rope conveying hole (304) is provided on the other side of the self-locking sleeve (301), a self-locking fixing rod (305) is fixedly connected around the rope conveying hole (304) on the other side of the self-locking sleeve (301), a second-order spring (306) is fixedly connected to the other side of the self-locking fixing rod (305), a rope fixing ring (307) is movably connected to one side of the self-locking sleeve (301), a side plate slider (308) is fixedly connected to the front and back of the rope fixing ring (307), and a support connecting block (309) is fixedly connected to the back of the side plate slider (308).

2. The foundation pit monitoring and positioning device based on BeiDou positioning according to claim 1, characterized in that: The monitoring activation device (4) includes a monitoring box (401), a metal rod (402) is fixedly connected to the other side inside the monitoring box (401), a detection spring (403) is fixedly connected to the outside of the metal rod (402), a movable detection box (404) is movably connected to one side inside the monitoring box (401), a detection fixing frame (405) is fixedly connected to the top of the movable detection box (404), a detection horizontal rod (406) is fixedly connected to the other side of the movable detection box (404), and the support fastening device (7) includes a support sliding block (701), a rotating frame (702) is fixedly connected to the back of the support sliding block (701), and a wear-resistant plate (703) is fixedly connected to the back of the rotating frame (702).

3. The foundation pit monitoring and positioning device based on BeiDou positioning according to claim 2, characterized in that: The monitoring and positioning main body (1) is equipped with an information processing device located on top of the locking device (2). The control module and the judgment module are installed inside the information processing device. An elastic ring is installed on the outside of the longitudinal control lever (2021) inside the information processing device. An inclined surface is opened on the top of the inclined slide groove (2023). A rotating recovery rod (5) is installed inside the rope storage rack (103). A rolling bearing is installed on the outside of the rotating recovery rod (5). One end of the extension rope is fixed on the outside of the rope storage rack (103).

4. The foundation pit monitoring and positioning device based on BeiDou positioning according to claim 3, characterized in that: The top of the displacement ramp (303) is a 45-degree slope, and the width of the displacement ramp (303) is half the width of the slope groove (2023). A first-order spring is installed inside the self-locking fixing rod (305). The maximum force exerted by the first-order spring on the self-locking sleeve (301) is 50N. When the displacement ramp (303) moves to the inner wall, the combined force exerted on the four second-order springs (306) is 400N. The support connecting block (309) is fixedly connected to the support fastening device (7) by a fixing pin.

5. A foundation pit monitoring and positioning device based on BeiDou positioning according to claim 4, characterized in that: The mobile detection box (404) is equipped with a pressure sensor. The top of the detection fixing frame (405) has a sliding groove. The width of the sliding groove is the same as the width of the bottom sliding groove of the bottom pressure block (2022). The support sliding block (701) is installed inside the support sliding groove (104). The two side support fastening devices (7) are mirrored inside the monitoring and positioning body (1).

6. A foundation pit monitoring and positioning device based on BeiDou positioning according to claim 2, characterized in that: The bottom of the rope fixing ring (307) is provided with a contraction groove.

7. A foundation pit monitoring and positioning device based on BeiDou positioning according to claim 1, characterized in that: The rope is made of polyester fiber, with a total length of 12 meters and an effective usable length of 10 meters. Support frames are installed on the support frame every five meters along the rope.

8. An intelligent control and monitoring system, characterized in that, The intelligent control and monitoring system includes: At least one foundation pit monitoring and positioning device based on BeiDou positioning as described in any one of claims 2 to 6 The system includes a data acquisition module, a control module, a judgment module, and a response module. The data acquisition module is used to acquire the instantaneous pressure value when the metal rod (402) contacts the detection horizontal rod (406) using a pressure sensor. The control module is used to control the start and stop of the acoustic ranging device and the Beidou positioning device. The judgment module is used to analyze each monitoring value, including comparing the instantaneous pressure value with the threshold, comparing the acoustic detection distance with the initial value, and comparing the offset of the single-point positioning point with the initial value. The response module is used to control the response of the early warning unit based on the analysis results of the above monitoring values, specifically including activating fault alarms, level one alarms, and level two alarms.

Images