A frozen soil roadbed frost heaving and thawing settlement automatic monitoring device
By designing a detachable permafrost roadbed monitoring device, the problem of sensor damage caused by long-term burial in permafrost roadbeds was solved, enabling convenient sensor maintenance and accurate data collection, and improving the reliability and efficiency of permafrost roadbed monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY NO 3 GRP CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-19
Smart Images
Figure CN224378840U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of roadbed monitoring technology, and in particular to an automatic monitoring device for frost heave and thaw settlement of frozen soil roadbeds. Background Technology
[0002] With the rapid development of high-speed railway construction, the requirements for the stability and safety of roadbeds are becoming increasingly stringent. As a crucial component of high-speed railways, the deformation monitoring of frozen soil roadbeds is of great significance for ensuring the safe operation of trains.
[0003] The existing monitoring equipment includes an installation pipe buried inside the roadbed and a sensor assembly installed inside the installation pipe. The installation pipe consists of a pipe body and a cover. The cover is connected to the pipe body through a flange. The installation pipe provides protection for the sensor assembly, which can collect data such as temperature and humidity of the frozen soil roadbed.
[0004] The existing technical solutions mentioned above have the following drawbacks: the detection equipment is buried in the frozen soil subgrade for a long time, the internal temperature of the frozen soil subgrade is low, and the sensor is easily damaged when it is in the frozen soil subgrade for a long time. Utility Model Content
[0005] This application provides an automatic monitoring device for frost heave and thaw settlement of frozen soil subgrade to facilitate the inspection, maintenance and replacement of sensors.
[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:
[0007] An automatic monitoring device for frost heave and thaw settlement of frozen soil subgrade includes an installation component and a measurement component. The installation component includes a vertically arranged and closed mounting cylinder, a measuring plate slidably disposed on the outer walls of both sides of the mounting cylinder, and an anchor fixed to the lower end face of the measuring plate. The surface of the measuring plate is slidably attached to the outer wall of the mounting cylinder. The measurement component includes a mounting rod detachably inserted into the mounting cylinder. A displacement measuring hole is opened on the side wall of the mounting cylinder near the measuring plate, and a temperature and humidity measuring hole is opened on the side wall adjacent to the displacement measuring hole. A displacement sensor and a temperature and humidity sensor are respectively disposed at corresponding positions on the side wall of the mounting rod. The displacement sensor can slide and attach to the surface of the measuring plate, and the surface of the temperature and humidity sensor is flush with the outer wall of the mounting cylinder.
[0008] By adopting the above technical solution, and by setting up the mounting cylinder, measuring plate, anchors, mounting rod, displacement measuring hole, temperature and humidity measuring hole, displacement sensor, and temperature and humidity sensor in the embedded component, the measuring component can be detachably inserted into the mounting cylinder. The displacement sensor slides and fits against the surface of the measuring plate to monitor the deformation of the frozen soil subgrade. The surface of the temperature and humidity sensor is flush with the outer wall of the mounting cylinder to collect the temperature and humidity data of the frozen soil subgrade. When the sensor malfunctions, it can be inspected, repaired, and replaced by disassembling the mounting rod, reducing the possibility of the sensor being damaged by being in the frozen soil subgrade for a long time.
[0009] Optionally, the upper end face of the mounting rod is provided with a handle, and a receiving cavity is formed on the surface of the telescopic handle away from the mounting rod and towards the mounting rod. A button, a gear, a spring, and a fixing post are provided in the receiving cavity. The button is slidably disposed in the receiving cavity, and the spring is disposed between the button and the bottom of the receiving cavity. The gear is hinged to the side wall of the receiving cavity, and the gear axis is perpendicular to the length direction of the button. The side wall of the button is machined with teeth that mesh with the gear. The fixing post passes through the mounting rod and its end is located in the receiving cavity. The side wall of the fixing post is machined with teeth that mesh with the gear. The length direction of the fixing post is perpendicular to both the gear axis and the length direction of the button. An insertion groove is provided on the mounting cylinder, and the end of the fixing post can be inserted into the insertion groove.
[0010] By adopting the above technical solution, and by setting a handle, receiving cavity, button, gear, spring, and fixing post on the upper end face of the mounting rod, as well as an insertion groove on the mounting cylinder, after the mounting rod is inserted into the mounting cylinder, pressing the button will utilize the meshing relationship between the button and the gear, and between the fixing post and the gear, to make the end of the fixing post insert into the insertion groove, thus achieving a fixed connection between the mounting rod and the mounting cylinder. When disassembly is required, pressing the button will disengage the fixing post from the insertion groove, thereby facilitating the disassembly of the mounting rod and achieving the effect of convenient installation and disassembly of the measuring components.
[0011] Optionally, limiting plates are provided on both sides of the measuring plate. The side wall of the limiting plate is fixedly connected to the outer wall of the mounting cylinder. The plate surface of the limiting plate slides against the side wall of the measuring plate. A limiting groove is opened on the opposite plate surface of the limiting plate. A limiting member adapted to the limiting groove is fixedly connected to the end of the side wall of the measuring plate away from the anchor. The limiting member slides in the limiting groove.
[0012] By adopting the above technical solution, and by setting a limiting plate, a limiting groove, and a limiting component, the limiting component can slide in the limiting groove to limit the sliding of the measuring plate, reduce the possibility of the measuring plate separating from the limiting plate and the mounting cylinder, and ensure that the measuring plate can slide stably along the outer wall of the mounting cylinder, thereby more accurately transmitting the deformation information of the frozen soil subgrade.
[0013] Optionally, the surface of the anchor and the measuring plate is provided with multiple anti-slip components at intervals. The anti-slip components are rectangular frames, and the inner wall of the anti-slip components is fixed to the anchor.
[0014] By adopting the above technical solution and setting anti-slip components, the contact area between the anchor and the frozen soil subgrade can be increased, the connection force between the anchor and the soil can be enhanced, and the monitoring equipment can be more sensitive to the deformation measurement of the frozen soil subgrade, and can more accurately reflect the actual deformation of the frozen soil subgrade.
[0015] Optionally, the mounting rod is provided with a receiving blind hole at the position corresponding to the displacement measuring hole and the temperature and humidity measuring hole. A sliding member is slidably disposed in the receiving blind hole, and a spring is provided between the sliding member and the bottom of the receiving blind hole. The displacement sensor and the temperature and humidity sensor are both embedded on the surface of the corresponding sliding member away from the bottom of the receiving blind hole.
[0016] By adopting the above technical solution, and by setting up a blind hole, a sliding member, and a spring, the displacement sensor and the temperature and humidity sensor can be embedded in the sliding member. When the mounting rod is inserted into the mounting cylinder, under the action of the spring, the sliding member drives the sensor to slide and fit against the surface of the measuring plate and flush with the outer wall of the mounting cylinder, respectively, ensuring good contact between the sensor and the object being measured, thereby accurately collecting displacement, temperature, and humidity data.
[0017] Optionally, the upper and lower corners of the sliding member away from the bottom of the blind hole are chamfered.
[0018] By adopting the above technical solution, and by processing the upper and lower corners of the sliding component away from the bottom of the blind hole into chamfers, the friction and resistance at the corners can be reduced when the sliding component is inserted into the displacement measurement hole and the temperature and humidity measurement hole, so that the sliding component can slide more smoothly, reduce the possibility of the sliding component getting stuck in the hole, and improve the stability of sensor installation and operation.
[0019] Optionally, the upper and lower sidewalls of the displacement measuring hole and the temperature and humidity measuring hole near the corners of the mounting rod are chamfered.
[0020] By adopting the above technical solution, the upper and lower sidewalls of the displacement measuring hole and the temperature and humidity measuring hole are processed into chamfers near the corners of the mounting rod. This chamfers can match the chamfers of the sliding parts, further reducing the obstruction when the sliding parts are inserted into the holes. This allows the sliding parts to enter the holes more smoothly and come into contact with the measuring plate or the external soil, ensuring that the sensors can work normally and improving the reliability of the monitoring equipment.
[0021] Optionally, the mounting rod sidewall is embedded with a battery and a signal transmitter.
[0022] By adopting the above technical solution and setting up a battery and a signal transmitter, the battery can provide power to devices such as displacement sensors and temperature and humidity sensors, ensuring that the monitoring equipment can operate independently without an external power cord. The signal transmitter can send the displacement, temperature and humidity data collected by the sensors in real time, which facilitates remote monitoring and data processing, and improves monitoring efficiency and convenience.
[0023] In summary, this application has the following technical effects:
[0024] 1. By setting up the mounting cylinder, measuring plate, anchors in the embedded assembly, and the mounting rod, displacement measuring hole, temperature and humidity measuring hole, displacement sensor and temperature and humidity sensor in the measuring assembly, the measuring assembly can be detachably inserted into the mounting cylinder. The displacement sensor slides against the surface of the measuring plate to monitor the deformation of the frozen soil subgrade. The surface of the temperature and humidity sensor is flush with the outer wall of the mounting cylinder to collect the temperature and humidity data of the frozen soil subgrade. When the sensor malfunctions, it can be inspected, repaired and replaced by disassembling the mounting rod, reducing the possibility of the sensor being damaged by being in the frozen soil subgrade for a long time.
[0025] 2. By setting a handle, receiving cavity, button, gear, spring, and fixing post on the upper end face of the mounting rod, as well as a plug groove on the mounting cylinder, after the mounting rod is inserted into the mounting cylinder, pressing the button will utilize the meshing relationship between the button and the gear, and between the fixing post and the gear, to make the end of the fixing post insert into the plug groove, thus achieving a fixed connection between the mounting rod and the mounting cylinder. When disassembly is required, pressing the button will disengage the fixing post from the plug groove, thereby facilitating the disassembly of the mounting rod and achieving the effect of convenient installation and disassembly of the measuring components.
[0026] 3. By setting a limiting plate, a limiting groove, and a limiting component, the limiting component can slide in the limiting groove to limit the sliding of the measuring plate, reduce the possibility of the measuring plate separating from the limiting plate and the mounting cylinder, and ensure that the measuring plate can slide stably along the outer wall of the mounting cylinder, thereby more accurately transmitting the deformation information of the frozen soil subgrade. Attached Figure Description
[0027] Figure 1 This is a structural diagram of the object of this application;
[0028] Figure 2 This is an exploded structural diagram of this application;
[0029] Figure 3 This is a structural diagram of the cavity inside the cavity of this application.
[0030] Explanation of reference numerals in the attached drawings: 1. Embedded component; 11. Mounting cylinder; 111. Limiting plate; 112. Limiting groove; 113. Displacement measuring hole; 114. Temperature and humidity measuring hole; 12. Measuring plate; 121. Limiting component; 13. Anchor; 14. Anti-slip component; 2. Measuring component; 21. Mounting rod; 211. Receiving blind hole; 22. Sliding component; 23. Displacement sensor; 24. Temperature and humidity sensor; 25. Battery; 26. Handle; 261. Receiving cavity; 27. Button; 28. Gear; 29. Fixing post. Detailed Implementation
[0031] The present application will be further described in detail below with reference to the accompanying drawings.
[0032] This application discloses an automatic monitoring device for frost heave and thaw settlement of frozen soil roadbeds, referring to... Figure 1 and Figure 2 The detection equipment includes an embedded component 1 and a measuring component 2. The measuring component 2 is detachably installed in the embedded component 1, which is buried in the roadbed. The measuring component 2 can contact the roadbed soil and measure the temperature and humidity of the roadbed soil. The embedded component 1, together with the measuring component 2, monitors the roadbed deformation data. The detachable measuring component 2 facilitates the inspection, maintenance and replacement of the sensor, reducing the possibility of damage to the sensor due to prolonged exposure to frozen soil.
[0033] Combination Figure 1 and Figure 2 The installation component 1 includes an installation cylinder 11 vertically embedded in the frozen soil subgrade. The installation cylinder 11 is a square cylinder with its lower end closed. Two limiting plates 111 are fixedly connected to the outer walls of the opposite sides of the installation cylinder 11. The limiting plates 111 are strip-shaped plates with their length direction parallel to that of the installation cylinder 11. The side walls of the limiting plates 111 are fixedly connected to the outer walls of the installation cylinder 11, and the surface of the limiting plates 111 is perpendicular to the outer walls of the installation cylinder 11. The two limiting plates 111 on one side of the installation cylinder 11 are spaced apart and located at the edges of the outer walls of the installation cylinder 11 on both sides of their length direction. The opposite surfaces of the two limiting plates 111 are flush with the outer walls of their adjacent installation cylinder 11.
[0034] Combination Figure 1 and Figure 2A measuring plate 12 is slidably disposed between the two limiting plates 111 on the same side. The length direction of the measuring plate 12 is parallel to the length direction of the mounting cylinder 11. The surface of the measuring plate 12 is slidably attached to the outer wall of the mounting cylinder 11. The two side walls of the measuring plate 12 are slidably attached to the opposite surfaces of the two limiting plates 111, respectively. The surface of the measuring plate 12 away from the mounting cylinder 11 is flush with the side wall of the limiting plate 111 away from the mounting cylinder 11. The opposite surfaces of the two limiting plates 111 on the same side are provided with strip-shaped limiting grooves 112. The length direction of the limiting grooves 112 is parallel to the length direction of the limiting plates 111. The end of the side wall of the measuring plate 12 away from the closed end of the mounting cylinder 11 is provided with a limiting member 121 that is adapted to the limiting groove 112. The limiting member 121 is slidably disposed in the limiting groove 112. The limiting member 121 and the limiting groove 112 can reduce the possibility of the measuring plate 12 separating from the limiting plates 111 and the mounting cylinder 11.
[0035] Combination Figure 1 and Figure 2 The ends of both measuring plates 12 away from the limiting member 121 are fixedly connected to the surface of the anchor 13. The anchor 13 is a square column, with its length direction perpendicular to the surface of the measuring plate 12 and its end face parallel to the surface of the measuring plate 12. Multiple anti-slip elements 14 are fixedly connected at intervals to both ends of the anchor 13 and the sidewalls adjacent to the measuring plate 12. Each anti-slip element 14 is a rectangular frame composed of four square columns whose ends are fixedly connected to each other. The inner wall of the anti-slip element 14 is fixedly connected to the surface of the anchor 13. The anchor 13 is buried in the frozen soil subgrade. The anti-slip elements 14 can increase the contact between the anchor 13 and the frozen soil subgrade, making the monitoring equipment more sensitive to the deformation measurement of the frozen soil subgrade.
[0036] Combination Figure 1 and Figure 2 The measuring component 2 includes a detachable mounting rod 21 inserted into the mounting cylinder 11. The mounting rod 21 is a square column and is adapted to the mounting cylinder 11. The side wall of the mounting rod 21 can slide against the inner wall of the mounting cylinder 11. The mounting cylinder 11 is fixed to the limiting plate 111. Displacement measuring holes 113 communicating with the inside and outside of the mounting cylinder 11 are opened on both sides of the cylinder. Temperature and humidity measuring holes 114 communicating with the inside and outside of the mounting cylinder 11 are opened on both sides of the cylinder adjacent to the limiting plate 111. The height of the displacement measuring holes 113 is different from the height of the temperature and humidity measuring holes 114. Square blind holes 211 are provided at the corresponding positions of the displacement measuring hole 113 and the temperature and humidity measuring hole 114 on the side wall of the mounting rod 21. A sliding member 22 is slidably arranged in the blind hole 211. The sliding member 22 is a block and can be inserted into the displacement measuring hole 113 and the temperature and humidity measuring hole 114. Multiple springs are also provided in the blind hole 211. The multiple springs are distributed in a rectangular shape. One end of the spring is fixed to the bottom of the blind hole 211 and the other end is fixed to the surface of the sliding member 22.
[0037] Combination Figure 1 and Figure 2 The sliding member 22 has chamfered edges on both the top and bottom corners of its surface away from the bottom of the blind hole 211. The displacement measuring hole 113 and the temperature and humidity measuring hole 114 also have chamfered edges on the sides of their upper and lower walls near the mounting rod 21. These chamfers reduce the possibility of the sliding member 22 getting stuck in the displacement measuring hole 113 and the temperature and humidity measuring hole 114. Corresponding temperature and humidity sensors 24 and displacement sensors 23 are embedded on the surface of the sliding member 22 away from the blind hole 211. When the sliding member 22 is inserted into the displacement measuring hole 113, the displacement sensor 23 can slide and fit against the surface of the measuring plate 12, thereby measuring the deformation data of the frozen soil subgrade. When the sliding member 22 is inserted into the temperature and humidity measuring hole 114, the surface of the temperature and humidity sensor 24 away from the mounting rod 21 is flush with the outer wall of the mounting cylinder 11, thereby contacting the frozen soil subgrade and collecting temperature and humidity data.
[0038] Combination Figure 1 and Figure 2 A battery 25 and a signal transmitter are embedded in the side wall of the mounting rod 21 at intervals. Both the battery 25 and the signal transmitter are spaced apart from the receiving blind hole 211 and are located inside the mounting rod 21. The battery 25 can provide power to the sensor, enabling the monitoring equipment to operate independently. The signal transmitter can send the data collected by the displacement sensor 23 and the temperature and humidity sensor 24 back to the data center.
[0039] Combination Figure 2 and Figure 3 A U-shaped handle 26 is fixedly attached to the upper end face of the mounting rod 21. Both ends of the handle 26 are fixed to the upper end face of the mounting rod 21 and are respectively close to the two measuring plates 12. A receiving cavity 261 is formed on the end of the handle 26 facing away from the mounting rod 21. The receiving cavity 261 is a square column, and its length is parallel to the length of the mounting rod 21. A gear 28 is hinged inside the receiving cavity 261, and the axis of the gear 28 is perpendicular to the length of the mounting rod 21. A button 27 is slidably disposed inside the receiving cavity 261. The button 27 is a square column, adapted to and slidably disposed within the receiving cavity 261. Teeth that mesh with the gear 28 are machined on the side wall of the button 27 near the bottom of the receiving cavity 261. The length of the button 27 is parallel to the length of the mounting cylinder 11.
[0040] Combination Figure 2 and Figure 3A spring is also installed inside the receiving cavity 261. The spring is located between the button 27 and the bottom of the receiving cavity 261. One end of the spring is fixed to the end face of the button 27, and the other end is fixed to the bottom of the receiving cavity 261. A square hole is opened on the side wall of the receiving cavity 261, which connects the receiving cavity 261 and the side wall of the mounting rod 21. A fixing post 29 is also installed inside the receiving cavity 261. The fixing post 29 is adapted to the square hole and is slidably installed in the square hole. The length direction of the fixing post 29 is perpendicular to the length direction of the button 27. The fixing member has teeth machined on the side wall inside the receiving cavity 261. The teeth mesh with the gear 28. A corresponding insertion groove is opened on the inner wall of the mounting cylinder 11. The end of the fixing post 29 outside the handle 26 can be inserted into the insertion groove. The fixing post 29 can detachably install the mounting rod 21 in the mounting cylinder 11.
[0041] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.
Claims
1. A device for automatic monitoring of frost heaving and thawing settlement of frozen soil roadbed, characterized in that: The system includes an installation component (1) and a measuring component (2). The installation component (1) includes a vertically arranged and closed mounting cylinder (11), measuring plates (12) slidably disposed on the outer walls of both sides of the mounting cylinder (11), and anchors (13) fixed to the lower end face of the measuring plates (12). The surface of the measuring plates (12) slidably fits against the outer wall of the mounting cylinder (11). The measuring component (2) includes a mounting rod (21) detachably inserted into the mounting cylinder (11). A displacement measuring hole (113) is provided on the side wall of the cylinder (11) near the measuring plate (12), and a temperature and humidity measuring hole (114) is provided on the side wall adjacent to the displacement measuring hole (113). A displacement sensor (23) and a temperature and humidity sensor (24) are provided at corresponding positions on the side wall of the mounting rod (21). The displacement sensor (23) can slide and fit against the surface of the measuring plate (12), and the surface of the temperature and humidity sensor (24) is flush with the outer wall of the mounting cylinder (11).
2. The automatic monitoring equipment for frost heaving and thawing settlement of frozen soil subgrade according to claim 1, characterized in that: A handle (26) is provided on the upper end face of the mounting rod (21). A receiving cavity (261) is formed on the surface of the handle (26) facing away from the mounting rod (21). A button (27), a gear (28), a spring, and a fixing post (29) are provided inside the receiving cavity (261). The button (27) is slidably disposed in the receiving cavity (261). The spring is disposed between the button (27) and the bottom of the receiving cavity (261). The gear (28) is hinged to the side wall of the receiving cavity (261). 28) The axis is perpendicular to the length direction of the button (27). The side wall of the button (27) is machined with teeth that mesh with the gear (28). The fixing post (29) is inserted into the mounting rod (21) and its end is located in the receiving cavity (261). The side wall of the fixing post (29) is machined with teeth that mesh with the gear (28). The length direction of the fixing post (29) is perpendicular to both the axis of the gear (28) and the length direction of the button (27). The mounting cylinder (11) has a insertion groove, and the end of the fixing post (29) can be inserted into the insertion groove.
3. The automatic monitoring equipment for frost heaving and thawing settlement of frozen soil subgrade according to claim 1, characterized in that: Limiting plates (111) are provided on both sides of the measuring plate (12). The side wall of the limiting plate (111) is fixedly connected to the outer wall of the mounting cylinder (11). The plate surface of the limiting plate (111) slides against the side wall of the measuring plate (12). A limiting groove (112) is opened on the opposite plate surface of the limiting plate (111). A limiting member (121) adapted to the limiting groove (112) is fixedly connected to the end of the side wall of the measuring plate (12) away from the anchor (13). The limiting member (121) slides in the limiting groove (112).
4. The automatic monitoring device for frost heaving and thawing settlement of frozen soil subgrade according to claim 3, characterized in that: The surface of the anchor (13) adjacent to the measuring plate (12) is provided with multiple anti-slip parts (14) at intervals. The anti-slip parts (14) are rectangular frames, and the inner wall of the anti-slip parts (14) is fixed to the anchor (13).
5. The automatic monitoring equipment for frost heaving and thawing settlement of frozen soil subgrade according to claim 1, characterized in that: The mounting rod (21) is provided with a receiving blind hole (211) at the position corresponding to the displacement measuring hole (113) and the temperature and humidity measuring hole (114). A sliding member (22) is slidably arranged in the receiving blind hole (211). A spring is provided between the sliding member (22) and the bottom of the receiving blind hole (211). The displacement sensor (23) and the temperature and humidity sensor (24) are both embedded on the surface of the corresponding sliding member (22) away from the bottom of the receiving blind hole (211).
6. The automatic monitoring equipment for frost heaving and thawing settlement of frozen soil subgrade according to claim 5, characterized in that: The sliding member (22) has chamfered edges on the upper and lower corners of its surface away from the bottom of the blind hole (211).
7. The automatic monitoring device for frost heaving and thawing settlement of frozen soil subgrade according to claim 6, characterized in that: The upper and lower sidewalls of the displacement measuring hole (113) and the temperature and humidity measuring hole (114) near the corners of the mounting rod (21) are chamfered.
8. The automatic monitoring device for frost heaving and thawing settlement of frozen soil subgrade according to claim 1, characterized in that: The mounting rod (21) has a battery (25) and a signal transmitter embedded in its side wall.