A deep horizontal displacement automatic measuring device

Abstract

The invention discloses an automatic deep horizontal displacement measuring device. The device detects the displacement direction and distance of deep rock and soil through a protective cover, a bracket, a motor, a transmission component, a winding wheel, an inclinometer cable, an inclinometer component, a counting component and a monitoring component, generates a displacement signal, records the moving direction and distance of the inclinometer cable, generates a depth signal, calculates inclinometer data, and sends the data to a server. The device has a simple structure and is easy to install. The device overcomes the problems of untimely data collection, large human errors, inability to encrypt observations in bad weather, and low efficiency. The device simulates the manual method to perform inclinometer work, overcomes the problems of insufficient distribution density, complex installation, great difficulty in replacement, and high cost of fixed inclinometers, and can realize online viewing of monitoring data and reception of over-limit alarm information at any location. The device has high automation efficiency and saves a lot of manpower and material resources.

Description

Technical Field

[0001] The invention belongs to the technical field of geotechnical engineering monitoring, and in particular relates to a deep displacement automatic measurement technology. Background Art

[0002] During the excavation of the foundation pit, the stratum behind the retaining wall produces an increase in shear stress, which causes shear deformation of the soil, causing the entire retaining structure to shift toward the foundation pit. Therefore, it is necessary to conduct deep horizontal displacement monitoring of the soil or retaining structure around the foundation pit.

[0003] The displacement of deep soil can be divided into horizontal displacement and vertical displacement. There is a lag process for the deformation of deep soil to be reflected on the surface, which requires a certain amount of time. It is necessary to grasp the movement of deep soil in a timely manner and take appropriate construction protection measures when necessary to prevent underground construction and surrounding environment from being damaged.

[0004] The flexural deformation of the support system includes the flexural deformation of the retaining structure in the horizontal direction and the flexural deformation of the supporting rods in the vertical direction. The flexural deformation of the retaining structure is measured by an inclinometer.

[0005] Inclinometer monitoring can measure the horizontal displacement of piles and soil at different depths, determine whether the retaining structure and surrounding soil show signs of instability during excavation, summarize their deformation laws, and guide scientific construction. It is widely used in deep foundation pit monitoring.

[0006] Conventional deep horizontal displacement monitoring of foundation pits uses portable inclinometers and fixed inclinometers: portable inclinometers are usually used manually, and monitoring personnel need to carry inclinometers to the site to read data. They cannot get rid of manual measurement, which is time-consuming and labor-intensive, inefficient, and restricted by weather and time. They cannot achieve all-weather tracking and monitoring, continuous monitoring, and early alarm, especially in environments such as severe weather. Personnel cannot go to the site to collect inclinometer monitoring data, and foundation pits are often prone to large deformations in severe weather, and gradually cannot meet the monitoring needs of modern information construction; fixed inclinometers, according to the measured depth, connect several inclinometer probes in series to different depths in the inclinometer tube, and use wireless control technology to collect and transmit data. Although this method can realize automated monitoring, each inclinometer hole needs to be installed with multiple inclinometer sensors in series, which is costly and complicated to install. When a single inclinometer is damaged, it is difficult to replace it. Due to the length of the fixed inclinometer, the distribution of measuring points cannot meet the standard distribution requirements of 0.5m / 1m, and it cannot be promoted and used on a large scale.

[0007] In order to solve the problems of portable inclinometers being time-consuming and labor-intensive, subject to human errors, and unable to encrypt observations in bad weather, and the problems of fixed inclinometers having insufficient distribution density of measuring points, complex installation, difficulty in replacement, and high cost, it is necessary to develop a set of measuring devices that can realize automatic data collection, transmission, easy installation, and low cost based on the existing deep horizontal displacement monitoring technology. Summary of the invention

[0008] In order to solve the problems existing in the prior art, the present invention proposes an automatic measurement device for deep horizontal displacement. In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions.

[0009] The device comprises: a protective cover, a bracket, a motor, a transmission component, a winding wheel, an inclinometer cable, an inclinometer component, a counting component and a monitoring component.

[0010] The protective cover is fixed to the ground, made of anti-corrosion material, with an openable and closable top cover on the top and a round hole on the bottom.

[0011] The bracket is installed inside the protective cover, and the motor, the winding wheel, the counting component and the monitoring component are installed on the bracket.

[0012] The transmission assembly connects the motor and the winding wheel. When the motor rotates, the winding wheel is driven to rotate through the transmission assembly.

[0013] The inclinometer cable is wound around the winding wheel, one end of which passes through the axis of the winding wheel to connect to the monitoring component, and the other end passes through the counting component to connect to the inclinometer component.

[0014] The inclinometer component is buried underground and connected to the inclinometer cable to detect the horizontal displacement direction and distance of deep rock and soil, generate a displacement signal, and send it to the monitoring component through the inclinometer cable.

[0015] The counting component records the moving direction and distance of the inclinometer cable, obtains the vertical depth of the inclinometer component buried underground, generates a depth signal, and sends it to the monitoring component.

[0016] The monitoring component receives control instructions, turns on or off the motor, generates inclinometer data based on the displacement signal and depth signal, and sends it to the server.

[0017] The counting component includes: a scale disk and a counter. A groove is set on the edge of the scale disk. The groove is made of a material with a large friction coefficient. The inclinometer cable is embedded in the groove of the scale disk to drive the scale disk to rotate. The counter is installed on the axis of the scale disk and counts as the scale disk rotates. The counter counts once when the scale disk rotates one circle. The rotation direction is opposite, generating positive and negative electrical signals, which are sent to the monitoring component.

[0018] The monitoring components include: a data collector and a communication module. The data collector receives displacement signals and counting signals, calculates different displacement values ​​corresponding to different depth values, generates inclinometer data, and sends it to the monitoring server via the communication module. The communication module receives power on / off instructions to control the motor switch and rotation direction.

[0019] The inclinometer assembly includes: an inclinometer tube and an inclinometer probe. The circular hole at the bottom of the protective cover is sleeved on the outer wall of the inclinometer tube. A groove is arranged on the inner wall of the inclinometer tube. The inclinometer probe is connected to the inclinometer cable. A spring roller and a displacement sensor are arranged and placed in the inclinometer tube. The spring roller slides along the groove. The displacement sensor detects the horizontal displacement direction and distance of the deep rock and soil, generates a displacement signal, and sends it to the inclinometer cable.

[0020] The device also includes: a sliding component installed on the bracket, a transmission component connecting the motor and the sliding component, the inclinometer cable passes through the sliding component, and the motor drives the sliding component to translate through the transmission component, so that the inclinometer cable is flatly wound on the winding wheel.

[0021] The sliding assembly includes: a positioning rod, a screw, a worm gear, a pulley, and a hanger. The upper end of the hanger is connected to the axis of the pulley, and the lower end is connected to the axis of the worm gear. The pulley and the worm gear move synchronously through the hanger. A groove is set on the edge of the pulley, and the inclinometer cable is embedded in the pulley groove. Both ends of the positioning rod are installed on the bracket and pass through the axis of the pulley. The screw is parallel to the positioning rod, one end is connected to the bracket, and the other end is connected to the transmission assembly and meshes with the worm gear. The motor drives the screw to rotate through the transmission assembly, so that the worm gear translates along the screw, driving the pulley and the inclinometer cable to translate along the positioning rod.

[0022] The transmission assembly includes: a gear set or a chain set, which connects the motor and the winding wheel and the lead screw. The axial direction of the winding wheel is parallel to the lead screw. The motor rotates, driving the gear set or the chain set to rotate the winding wheel and the lead screw.

[0023] The device also includes: a guide component, which uses several pairs of guide wheels, through which the inclinometer cable passes, and each guide wheel clamps the inclinometer cable respectively to fix the sliding direction of the inclinometer cable.

[0024] The present invention has a simple structure and is easy to install. It can automatically collect deep horizontal displacement inclinometer data through a remote control program, thus overcoming the problems of untimely data collection, large human errors, inability to encrypt observations in bad weather, and low efficiency in manual monitoring. It can simulate manual methods to measure inclinometers by driving the winding wheel to rotate through a remote control motor, thus overcoming the problems of insufficient distribution density, complex installation, great difficulty in replacement, and high cost of fixed inclinometers. The collected data can be transmitted to a service cloud platform through wireless communication, thus monitoring can be more timely and monitoring data analysis can be more comprehensive. Users can view monitoring data online and receive over-limit alarm information wherever they are. It has high automation efficiency, saves a lot of manpower and material resources, is easy to promote and use, and can be widely used in automatic measurement of various deep horizontal displacements such as foundation pits, slopes, and dam projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the front view of the device. Figure 2 is a top view of the device. Figure 3 It is a side view of the device.

[0026] Figure numerals: 1-protective cover, 2-winding wheel, 3-chain group, 4-screw rod, 5-positioning rod, 6-scale disk, 7-inclinometer cable, 8-inclinometer probe, 9-inclinometer tube, 10-guide wheel group, 11-motor, 12-communication module, 13-data collector, 14-worm gear. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is described in detail below with reference to the accompanying drawings.

[0028] The protective cover 1 is made of anti-corrosion material, such as stainless steel. A location where the horizontal displacement of deep rock and soil needs to be monitored is selected, and the protective cover 1 is fixed to the ground with expansion screws. An openable and closable top cover is provided on the top of the protective cover 1 to protect against dust and rainwater and facilitate opening for inspection and maintenance of the internal device.

[0029] A circular hole is set at the bottom of the protective cover, and a deep hole is drilled downward at the circular hole to bury the inclinometer tube 9. Figure 1 As shown, the diameter of the circular hole is slightly larger than the diameter of the inclinometer tube 9, which is sleeved on the outer wall of the inclinometer tube 9. A groove is set on the inner wall of the inclinometer tube 9. The inclinometer probe 8 is provided with a spring roller and a displacement sensor, which is connected to the inclinometer cable 7 and placed in the inclinometer tube 9. The spring roller slides along the groove. If the rock and soil are displaced, the displacement sensor detects the horizontal displacement direction and distance of the deep rock and soil, and generates a displacement signal, such as Figure 3 As shown, it is sent to the data collector 13 through the inclinometer cable 7.

[0030] A groove is arranged on the edge of the scale plate 6, and the groove is made of a material with a large friction coefficient, and the inclinometer cable 7 is embedded in the scale plate groove. Figure 1 , 2As shown in Figure 3, due to the large friction force, the scale disk 6 is driven to rotate. The counter is installed on the axis of the scale disk and rotates with the scale disk 6 to count points. When the scale disk 6 rotates one circle, the counter counts once to record the moving direction and distance of the inclinometer cable, and obtains the vertical depth of the inclinometer probe 8 underground, generating a depth signal. By replacing the scale disk 6 with different circumferences, the counting interval can be changed, thereby changing the recording depth interval. The scale disk 6 rotates one circle toward the inclinometer tube 9, indicating that the inclinometer cable 7 falls one circle with the inclinometer probe 8 in the inclinometer tube 9. If the rotation direction is opposite, it means that the depth of one circle is increased, generating positive and negative electrical signals, each electrical signal corresponding to a different inclinometer depth value, which is sent to the data collector 13.

[0031] The staff can issue instructions remotely or automatically issue monitoring instructions through the monitoring server setting. The communication module 12 receives the control instructions wirelessly and sends them to the data collector 13 to control the switch and rotation direction of the electric 11. The data collector 13 receives the displacement signal and the counting signal, calculates the different displacement values ​​corresponding to the different depth values, generates the inclinometer data, and sends it to the monitoring server wirelessly through the communication module 12. Manual on-site operation is no longer required, and it can adapt to various terrains and climates where manual operation is impossible, and realizes all-weather remote monitoring. Thresholds can also be set to trigger alarms.

[0032] The upper end of the pendant is connected to the axis of the pulley, and the lower end is connected to the axis of the worm gear. The pulley and the worm gear move synchronously through the pendant. A groove is set on the edge of the pulley, and the inclinometer cable is embedded in the pulley groove. The positioning rod 5 passes through the axis of the pulley. The screw rod 4 is parallel to the positioning rod 5, one end of which is connected to the bracket, and the other end is connected to the chain group 3. Figure 1 As shown, the screw rod 4 is meshed with the worm gear 14, as shown in FIG. Figure 3 As shown, the motor 11 drives the lead screw 4 to rotate through the chain group 3, so that the worm gear 14 translates along the lead screw, driving the pulley and the inclinometer cable 7 to translate along the positioning rod, so that the inclinometer cable 7 is flatly wound on the winding wheel, avoiding the inclinometer cable 7 from being damaged due to being stacked on the winding wheel 2 and squeezed due to its own diameter and hardness, and saving space.

[0033] The chain group 3 connects the motor 11 and the winding wheel 2 and the screw rod 4. Figure 1 and 2 As shown, the axis of the winding wheel 2 is parallel to the screw rod 4, and the motor 11 rotates, driving the chain group 3 to rotate the winding wheel 2 and the screw rod 4, so that the inclinometer cable 7 slides and translates synchronously, saving power, no longer relying on manual labor, and realizing automatic operation.

[0034] Inclinometer cable 7 passes through several pairs of guide wheel groups 10, such as Figure 2As shown, each guide wheel clamps the inclinometer cable 7 respectively, fixes the sliding direction of the inclinometer cable 7, and prevents the inclinometer cable 7 from being twisted and deformed due to its own diameter and hardness, and preventing the sliding direction from changing due to the translation of the pulley.

[0035] The above are embodiments of the present invention and do not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A deep horizontal displacement automatic measuring device, characterized in that: include: Protective cover, bracket, motor, transmission assembly, winding wheel, inclinometer cable, inclinometer assembly, counting assembly, monitoring assembly; The protective cover is fixed to the ground, the bracket is installed inside the protective cover, and the motor, winding wheel, counting component and monitoring component are installed on the bracket; the transmission component connects the motor and the winding wheel, and the motor rotates, driving the winding wheel to rotate through the transmission component; the inclinometer cable is wound around the winding wheel, one end passes through the axis of the winding wheel and is connected to the monitoring component, and the other end passes through the counting component and is connected to the inclinometer component; the inclinometer component is buried underground and connected to the inclinometer cable to detect the horizontal displacement direction and distance of the deep rock and soil, generate a displacement signal, and send it to the monitoring component through the inclinometer cable; the counting component records the moving direction and distance of the inclinometer cable, and obtains The vertical depth of the inclinometer component buried underground generates a depth signal and sends it to the monitoring component; the monitoring component receives the control command, turns on or off the motor, generates inclinometer data according to the displacement signal and the depth signal, and sends it to the server; the counting component includes: a scale disk and a counter, a groove is set on the edge of the scale disk, the groove is made of a material with a large friction coefficient, the inclinometer cable is embedded in the groove of the scale disk, drives the scale disk to rotate, the counter is installed on the axis of the scale disk, rotates with the scale disk, counts points, and the counter counts once the scale disk rotates one circle. The rotation direction is opposite, and positive and negative electrical signals are generated and sent to the monitoring component; It also includes: a sliding assembly installed on the bracket, a transmission assembly connecting the motor and the sliding assembly, the inclinometer cable passes through the sliding assembly, and the motor drives the sliding assembly to translate through the transmission assembly, so that the inclinometer cable is flatly wound on the winding wheel; It also includes: a guide assembly, which uses several pairs of guide wheels, through which the inclinometer cable passes, and each guide wheel clamps the inclinometer cable to fix the sliding direction of the inclinometer cable; The protective cover comprises: an anti-corrosion material, an openable top cover on the top, and a round hole on the bottom; The monitoring component includes: a data collector and a communication module. The data collector receives displacement signals and counting signals, calculates different displacement values ​​corresponding to different depth values, generates inclinometer data, and sends the data to the monitoring server via the communication module. The communication module receives power on / off instructions and controls the motor power on / off and the rotation direction.

2. The deep horizontal displacement automatic measuring device according to claim 1 is characterized in that: The inclinometer assembly comprises: an inclinometer tube and an inclinometer probe. The circular hole at the bottom of the protective cover is sleeved on the outer wall of the inclinometer tube. A groove is arranged on the inner wall of the inclinometer tube. The inclinometer probe is connected to an inclinometer cable. A spring roller and a displacement sensor are arranged and placed in the inclinometer tube. The spring roller slides along the groove. The displacement sensor detects the horizontal displacement direction and distance of deep rock and soil, generates a displacement signal, and sends it to the inclinometer cable.

3. The deep horizontal displacement automatic measuring device according to claim 1 is characterized in that: The sliding assembly includes: a positioning rod, a screw, a worm gear, a pulley, and a hanger. The upper end of the hanger is connected to the axis of the pulley, and the lower end is connected to the axis of the worm gear. The pulley and the worm gear move synchronously through the hanger. A groove is set on the edge of the pulley, and the inclinometer cable is embedded in the pulley groove. Both ends of the positioning rod are installed on the bracket and pass through the axis of the pulley. The screw is parallel to the positioning rod, one end is connected to the bracket, and the other end is connected to the transmission assembly and meshes with the worm gear. The motor drives the screw to rotate through the transmission assembly, so that the worm gear translates along the screw, driving the pulley and the inclinometer cable to translate along the positioning rod.

4. The deep horizontal displacement automatic measuring device according to claim 3 is characterized in that: The transmission assembly includes: a gear set or a chain set, which connects the motor and the winding wheel and the screw rod. The axial direction of the winding wheel is parallel to the screw rod. The rotation of the motor drives the gear set or the chain set to rotate the winding wheel and the screw rod.

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