Roadbed settlement monitoring device

Abstract

The utility model relates to the technical field of monitoring devices, and discloses a roadbed settlement monitoring device which comprises two measuring rods, the two measuring rods are distributed up and down, the interiors of the two measuring rods are of hollow structures, a plurality of sliding blocks are fixedly installed on the surfaces of the two measuring rods, and a plurality of through grooves are formed in the surfaces of the two measuring rods. According to the monitoring device provided by the utility model, through the guide cooperation of the slide block and the L-shaped groove and the automatic locking structure of the clamping block and the first spring, the rapid splicing and dismounting between the upper and lower measuring rods are realized, the dismounting convenience of the device is improved, the locking can be realized only by aligning the slide block and the L-shaped groove and pressing and rotating the slide block and the L-shaped groove during splicing, the whole measuring rod does not need to be rotated, the field operation intensity is reduced, and the working efficiency is improved. The device can flexibly meet the increasing and decreasing requirements of measuring rod sections with different embedding depths, locking of the clamping block on the sliding block can be relieved only by pulling down the moving ring during disassembly, the problem of thread corrosion clamping stagnation does not need to be solved, the repeated utilization rate of the device is increased, and the field construction efficiency of roadbed settlement monitoring is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of monitoring device technology, and more specifically, to a roadbed settlement monitoring device. Background Technology

[0002] Roadbed settlement is a core indicator for evaluating the stability of roadbed engineering projects such as highways and railways and ensuring construction and operation safety. Due to its intuitive data and low deployment cost, the rod-type roadbed settlement monitoring device is currently the most widely used equipment in the field of roadbed settlement monitoring. In actual engineering, the burial depth of roadbed monitoring points varies significantly with geological conditions, filling height, and design requirements. It is necessary to flexibly increase or decrease the rod segments according to the site conditions to adapt to the burial requirements. The connection structure between the rod segments directly determines the on-site deployment efficiency and ease of use of the device.

[0003] Currently, most measuring rod segments in existing devices use threaded connections. This method has significant drawbacks in field applications, primarily due to the cumbersome and inconvenient nature of assembly and disassembly. For assembly, threaded connections require coaxial alignment of the measuring rod and continuous rotation of the entire rod to complete multiple turns. However, the heavy weight of the measuring rod and the time-consuming rotation process increase the workload and prevent rapid assembly. For disassembly, the measuring rods, being buried underground for extended periods, are susceptible to corrosion and jamming due to moisture and sediment. This makes them prone to thread stripping and seizing during disassembly, hindering rapid disassembly and potentially damaging the measuring rod structure, reducing device reusability and increasing project costs. Furthermore, threaded connections require high machining precision; dimensional deviations can lead to insufficient coaxiality and poor engagement, affecting monitoring accuracy and further complicating assembly and disassembly. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a roadbed settlement monitoring device, which solves the problems of cumbersome connection and disassembly of existing measuring rods and low on-site construction efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a roadbed settlement monitoring device, comprising: two measuring rods, the two measuring rods being distributed vertically, both measuring rods having a hollow internal structure, several sliders fixedly installed on the lower sidewalls of both measuring rods, and sleeves fixedly installed on the top ends of both measuring rods, wherein the bottom end of the upper measuring rod is inserted into the inside of the sleeve at the top end of the lower measuring rod, and the inner wall of the sleeve is provided with an L-shaped groove and a slot, wherein the slider on the surface of the upper measuring rod is slidably connected to the L-shaped groove inside the sleeve at the top end of the lower measuring rod, and a movable plate is slidably connected inside the sleeve, the top end of the movable plate inside the upper sleeve of the lower measuring rod abutting against the bottom end of the upper measuring rod;

[0006] Each of the movable plates has several locking blocks fixedly installed at its top. The top of each locking block abuts against the inside of an L-shaped groove. The locking block located inside the upper sleeve of the lower measuring rod abuts against the slider located on the surface of the upper measuring rod. Each of the movable plates has a first spring fixedly installed at its bottom. The bottom of the first spring is fixedly connected to the inner wall of the sleeve. Each of the movable plates has several vertical rods slidably connected inside. The bottom of each vertical rod passes through the sleeve and extends into the cavity of the measuring rod. Each of the vertical rods is slidably connected to the inside of the sleeve. Each of the vertical rods has a moving ring fixedly installed at its bottom. The moving ring is slidably connected to the surface of the measuring rod.

[0007] As a preferred technical solution of this utility model, an observation plug is abutted at the top of the upper sleeve. The observation plug has rectangular sliding holes that are symmetrically distributed from left to right. Two movable blocks are slidably connected inside the rectangular sliding holes. The bottom ends of the two movable blocks extend through the rectangular sliding holes to the bottom of the observation plug. The ends of the two movable blocks that are far apart from each other abut against the inside of the slot. A second spring is fixedly installed at the ends of the two movable blocks that are close to each other. The two second springs are located below the observation plug, and the ends of the two second springs that are far away from the movable blocks are fixedly connected to the bottom end of the observation plug.

[0008] As a preferred technical solution of this utility model, a connecting sleeve is movably inserted into the bottom end of the lower measuring rod, and a base plate is fixedly installed at the bottom end of the connecting sleeve. A vertical groove is opened inside the connecting sleeve, and a slider located on the surface of the lower measuring rod is slidably connected to the inside of the vertical groove. An arc-shaped groove is opened on the surface of the connecting sleeve, and the inside of the connecting sleeve is connected to the outside of the connecting sleeve through the arc-shaped groove. A retaining ring is movably sleeved inside the connecting sleeve, and the bottom end of the retaining ring abuts against the top end of the slider. The retaining ring is provided with a notch corresponding to the slider. An arc-shaped plate is fixedly installed on the side wall of the retaining ring, and the arc-shaped plate is slidably connected to the outer surface of the connecting sleeve.

[0009] As a preferred embodiment of this utility model, a reinforcing rib is fixedly installed at the top of the base plate, and the reinforcing rib is fixedly connected to the outer surface of the connecting sleeve. The reinforcing rib is made of galvanized carbon steel.

[0010] As a preferred technical solution of this utility model, a plurality of fixing sleeves are fixedly installed on the top of the base plate, and each fixing sleeve is provided with a plug rod. The bottom end of the plug rod passes through the base plate and extends to the bottom of the base plate. A screw is threaded onto the side wall of the fixing sleeve, and the end of the screw near the plug rod abuts against the surface of the plug rod.

[0011] As a preferred embodiment of this utility model, dustproof rings are fixedly sleeved on the outer surfaces of both measuring rods, wherein the bottom end of the dustproof ring on the surface of the upper measuring rod abuts against the top end of the sleeve on the lower measuring rod, and the bottom end of the dustproof ring on the surface of the lower measuring rod abuts against the top end of the connecting sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The monitoring device of this utility model, through the guiding cooperation of the slider and the L-shaped groove, and the automatic locking structure of the locking block and the first spring, realizes the rapid splicing and disassembly between the upper and lower measuring rods, which improves the convenience of device assembly and disassembly. During splicing, it is only necessary to align the slider and the L-shaped groove and press down and rotate to lock, without having to rotate the entire measuring rod, reducing the intensity of on-site work. It can flexibly adapt to the needs of adding or removing measuring rod segments at different burial depths. During disassembly, it is only necessary to pull down the moving ring to release the locking block on the slider, without having to deal with the problem of thread corrosion and jamming, improving the reusability of the device and significantly improving the on-site construction efficiency of roadbed settlement monitoring.

[0014] 2. The monitoring device of this utility model achieves quick insertion and locking between the lower measuring rod and the base plate through the cooperation of the connecting sleeve, vertical groove, retaining ring, and arc plate. This makes assembly and disassembly simple and the connection reliable. The fixed sleeve and rod structure on the base plate effectively enhances the overall anti-overturning ability of the device and improves its stability after installation. The observation plug uses a movable block and spring to engage in the slot, enabling quick disassembly and sealing of the top, facilitating later maintenance and observation. Simultaneously, a dustproof ring provides protection, reducing the entry of mud and sand into the internal structure and extending the device's service life. The overall structure is simple, operation is labor-saving, and its practicality and reliability are enhanced. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the slider of this utility model;

[0018] Figure 4 This is a schematic diagram of the L-shaped groove of this utility model;

[0019] Figure 5 This is a schematic diagram of the card slot structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the card block of this utility model;

[0021] Figure 7 This is a schematic diagram of the vertical groove structure of this utility model;

[0022] Figure 8 This is a cross-sectional view of the connecting sleeve of this utility model;

[0023] Figure 9 This is a schematic diagram of the structure of the second spring of this utility model;

[0024] Figure 10 This is a cross-sectional view of the insertion rod of this utility model;

[0025] Figure 11 for Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0026] In the diagram: 1. Measuring rod; 2. Slider; 3. Sleeve; 4. L-shaped groove; 5. Slot; 6. Movable plate; 7. Locking block; 8. First spring; 9. Vertical rod; 10. Connecting plate; 11. Moving ring; 12. Observation plug; 13. Fixed plate; 14. Movable block; 15. Second spring; 16. Connecting sleeve; 17. Vertical groove; 18. Arc groove; 19. Retaining ring; 20. Connecting block; 21. Arc plate; 22. Base plate; 23. Reinforcing rib; 24. Fixed sleeve; 25. Insert rod; 26. Screw; 27. Tightening block; 28. Dustproof ring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1 to 11 As shown, this utility model provides a roadbed settlement monitoring device, including two measuring rods 1, which are arranged vertically. Both measuring rods 1 have a hollow internal structure. Several sliders 2 are fixedly installed on the lower side wall of each measuring rod 1, and several through grooves are opened on the upper side wall of each measuring rod 1. A sleeve 3 is fixedly installed on the top of each measuring rod 1. The bottom end of the upper measuring rod 1 is inserted into the sleeve 3 at the top of the lower measuring rod 1. The inner wall of the sleeve 3 is provided with an L-shaped groove 4 and a slot 5. The slider 2 on the surface of the upper measuring rod 1 is slidably connected to the L-shaped groove 4 inside the sleeve 3 at the top of the lower measuring rod 1. A movable plate 6 is slidably connected inside the sleeve 3. The top of the movable plate 6 inside the upper sleeve 3 of the lower measuring rod 1 abuts against the bottom end of the upper measuring rod 1.

[0029] Several locking blocks 7 are fixedly installed at the top of the movable plate 6. The top of the locking blocks 7 abuts against the inside of the L-shaped groove 4. The locking blocks 7 located in the upper sleeve 3 of the lower measuring rod 1 abut against the slider 2 located on the surface of the upper measuring rod 1. A first spring 8 is fixedly installed at the bottom of the movable plate 6. The bottom of the first spring 8 is fixedly connected to the inner wall of the sleeve 3. Several vertical rods 9 are slidably connected inside the movable plate 6. The bottom of the vertical rods 9 passes through the sleeve 3 and extends into the cavity of the measuring rod 1. Several vertical rods 9 are slidably connected to the inside of the sleeve 3. A moving ring 11 is fixedly installed at the bottom of several vertical rods 9. The moving ring 11 is slidably connected to the surface of the measuring rod 1. Specifically, the bottom of several vertical rods 9 is fixedly connected to a connecting plate 10. The end of the connecting plate 10 extends to the outside of the measuring rod 1 through a through groove and is fixedly connected to the moving ring 11. The surface of the connecting plate 10 is slidably connected to the inside of the through groove. The outer surface of the moving ring 11 adopts an inward concave design.

[0030] More specifically, the measuring rod 1, as the core monitoring component of the device, can be flexibly increased or decreased in segments to adapt to different roadbed burial depth requirements in its vertically distributed configuration. The sleeve 3 provides a stable mounting platform for the docking of the upper and lower measuring rods 1. The slider 2 on the surface of the measuring rod 1 cooperates with the L-shaped groove 4 on the inner wall of the sleeve 3, providing precise vertical guidance for the docking and installation of the measuring rod 1. At the same time, through the horizontal and vertical two-stage path design of the L-shaped groove 4, after the measuring rod 1 is inserted and rotated, it forms an axial anti-disengagement limit for the slider 2, providing a stable structural foundation for the axial locking of the measuring rod 1. The movable plate 6, the locking block 7, and the first spring 8 cooperate with each other to ensure that after the measuring rod 1 is docked in place, the first spring 8... The return force of spring 8 drives the locking block 7 to automatically abut against the limiting slider 2, realizing the automatic locking of the upper and lower measuring rods 1 and ensuring the structural stability of the connection of measuring rods 1. The vertical rod 9 provides guiding constraint for the vertical movement of the movable plate 6, preventing the movable plate 6 from deflecting during the movement. The connecting plate 10 and the motion ring 11 work together. By pulling down the motion ring 11, the vertical rod 9 and the movable plate 6 can be moved down synchronously, quickly releasing the locking block 7 from limiting the slider 2, realizing tool-free quick unlocking of the upper and lower measuring rods 1, greatly improving the convenience of disassembling and assembling the measuring rods 1. At the same time, the concave design of the motion ring 11 makes it easier for operators to apply force, further reducing the difficulty of on-site operation.

[0031] The top of the upper sleeve 3 is abutted against an observation plug 12. The observation plug 12 has rectangular sliding holes that are symmetrically distributed on the left and right. Two movable blocks 14 are slidably connected inside the rectangular sliding holes. The bottom ends of the two movable blocks 14 extend through the rectangular sliding holes to the bottom of the observation plug 12. The ends of the two movable blocks 14 that are far apart from each other are abutted against the inside of the slot 5. The ends of the two movable blocks 14 that are close to each other are fixedly installed with second springs 15. The two second springs 15 are located below the observation plug 12, and the ends of the two second springs 15 that are far away from the movable blocks 14 are fixedly connected to the bottom end of the observation plug 12. Specifically, a fixing plate 13 is fixedly installed at the bottom end of the observation plug 12, and the ends of the two second springs 15 that are far away from the two movable blocks 14 are fixedly connected to the outer surface of the fixing plate 13.

[0032] More specifically, the observation plug 12 provides a stable reference surface for roadbed settlement observation. The fixing plate 13 fixed at its bottom provides a stable installation and fixing point for the second spring 15, ensuring the installation stability of the second spring 15. The movable block 14 cooperates with the second spring 15. By pressing the movable block 14 to compress the second spring 15, the movable block 14 can be moved in opposite directions, which facilitates the quick installation of the observation plug 12. After installation, the reset elasticity of the second spring 15 drives the movable block 14 to snap into the slot 5 on the inner wall of the sleeve 3, realizing the quick snap-fit ​​fixing of the observation plug 12 and the sleeve 3. Installation can be completed without additional fasteners. At the same time, it can be quickly disassembled by reversing the operation, which greatly improves the convenience of disassembling and assembling the observation plug 12, and also facilitates the later maintenance and observation operations inside the measuring rod 1.

[0033] A connecting sleeve 16 is movably inserted into the bottom end of the lower measuring rod 1. A base plate 22 is fixedly installed at the bottom end of the connecting sleeve 16. A vertical groove 17 is formed inside the connecting sleeve 16. The slider 2 on the surface of the lower measuring rod 1 is slidably connected to the inside of the vertical groove 17. An arc-shaped groove 18 is formed on the surface of the connecting sleeve 16. The inside of the connecting sleeve 16 is connected to the outside of the connecting sleeve 16 through the arc-shaped groove 18. A retaining ring 19 is movably fitted inside the connecting sleeve 16. The bottom end of the retaining ring 19 abuts against the top of the slider 2. The retaining ring 19 has a notch corresponding to the slider 2. An arc plate 21 is fixedly installed on the side wall of the retaining ring 19. The arc plate 21 is slidably connected to the outer surface of the connecting sleeve 16. Specifically, a connecting block 20 is fixedly installed on the side wall of the retaining ring 19. The surface of the connecting block 20 is slidably engaged with the arc groove 18. The connecting block 20 extends to the outside of the connecting sleeve 16 through the arc groove 18 and is fixedly connected to the arc plate 21. The surface of the arc plate 21 is provided with a protrusion, which is fixedly connected to the arc plate 21.

[0034] More specifically, the base plate 22 is used to be buried inside the roadbed to provide a stable installation foundation for the entire device. The connecting sleeve 16 provides a docking carrier for the connection between the lower measuring rod 1 and the base plate 22. The vertical groove 17 cooperates with the slider 2 on the surface of the measuring rod 1 to provide precise vertical guidance for the insertion of the measuring rod 1 into the connecting sleeve 16. The arc groove 18 provides a limiting guide for the movement of the connecting block 20, while limiting the maximum rotation stroke of the retaining ring 19 to avoid excessive rotation of the retaining ring 19 affecting the limiting effect. The connecting block 20 is used to realize the stable linkage between the arc plate 21 and the retaining ring 19. By twisting the arc plate 21, the retaining ring 19 can be driven to rotate synchronously inside the connecting sleeve 16. The retaining ring 19 can achieve alignment and misalignment of its notch with the vertical groove 17 by rotation. When aligned, the measuring rod 1 can be quickly inserted. When misaligned, it can form a vertical limiting block on the slider 2, realizing the quick locking of the measuring rod 1 and the base plate 22. The assembly and disassembly of the measuring rod 1 and the base plate 22 can be completed without additional tools, which greatly improves the overall installation and disassembly efficiency of the device.

[0035] The top of the base plate 22 is fixedly equipped with a reinforcing rib 23, which is fixedly connected to the outer surface of the connecting sleeve 16. The reinforcing rib 23 is made of galvanized carbon steel. Specifically, the reinforcing rib 23 is fixed between the base plate 22 and the connecting sleeve 16, which can greatly enhance the structural strength of the connection between the connecting sleeve 16 and the base plate 22, and prevent deformation or breakage of the connection between the connecting sleeve 16 and the base plate 22 during the installation and use of the device. This improves the overall structural stability and service life of the device. At the same time, the reinforcing rib 23, made of galvanized carbon steel, can effectively improve its rust resistance and adapt to the complex use environment under the roadbed.

[0036] The top of the base plate 22 is fixedly installed with multiple fixing sleeves 24. Each fixing sleeve 24 has a rod 25 inserted inside. The bottom end of the rod 25 passes through the base plate 22 and extends to the bottom of the base plate 22. The side wall of the fixing sleeve 24 is threaded with a screw 26. The end of the screw 26 near the rod 25 abuts against the surface of the rod 25. Specifically, the bottom end of the rod 25 adopts a pointed conical design. The end of the screw 26 away from the rod 25 is fixedly installed with a screwing block 27.

[0037] More specifically, the fixing sleeve 24 provides a stable mounting carrier for the insertion rod 25 and the screw rod 26. The insertion rod 25 can be inserted into the soil of the roadbed, which greatly improves the overall anti-overturning ability of the device and improves the accuracy of settlement monitoring data. The screw rod 26 and the tightening block 27 cooperate with each other. By tightening the tightening block 27, the screw rod 26 can be moved horizontally and quickly tightened to fix the insertion rod 25. The fixing and disassembly of the insertion rod 25 can be completed without additional tools, which is convenient. At the same time, the pointed conical design at the bottom of the insertion rod 25 can reduce the resistance of the insertion rod 25 into the soil, further reducing the difficulty of on-site operation.

[0038] Dustproof rings 28 are fixedly fitted onto the outer surfaces of both measuring rods 1. The bottom end of the dustproof ring 28 on the surface of the upper measuring rod 1 abuts against the top end of the sleeve 3 on the lower measuring rod 1, and the bottom end of the dustproof ring 28 on the surface of the lower measuring rod 1 abuts against the top end of the connecting sleeve 16. Specifically, the dustproof rings 28 are fixedly fitted onto the outer surfaces of the measuring rods 1, which can effectively shield and protect the top ends of the sleeve 3 and the connecting sleeve 16, preventing mud, sand, water vapor, and soil impurities from entering the L-shaped groove 4 inside the sleeve 3 and the vertical groove 17 inside the connecting sleeve 16 during the roadbed burial process and long-term use. This prevents the internal mating structure from jamming or corroding, ensures the smoothness of the device's assembly and disassembly, and extends the overall service life of the device.

[0039] Working principle and usage process of this utility model:

[0040] First, the operator must connect and fix the lower measuring rod 1 to the base plate 22. At this time, the operator needs to first twist the arc plate 21. Since the surface of the arc plate 21 is provided with protrusions, these protrusions can increase the friction between the plate and the operator's palm, making it easier for the operator to apply force to twist it. At the same time, the connecting block 20 will slide along the inside of the arc groove 18 under the action of the arc plate 21, thereby driving the retaining ring 19 to rotate synchronously inside the connecting sleeve 16. When the notch of the retaining ring 19 aligns with the vertical groove inside the connecting sleeve 16... After the groove 17 is aligned, the operator inserts the bottom end of the lower measuring rod 1 into the connecting sleeve 16, and at the same time aligns the slider 2 on the surface of the measuring rod 1 with the vertical groove 17, so that the slider 2 slides down the vertical groove 17 synchronously with the insertion of the measuring rod 1. After the measuring rod 1 is fully inserted into the connecting sleeve 16, the operator reverses the arc plate 21 to reset the retaining ring 19. At this time, the bottom end of the retaining ring 19 abuts against the top end of the slider 2. By limiting and blocking the slider 2 through the retaining ring 19, the measuring rod 1 and the base plate 22 are stably locked.

[0041] After fixing the lower measuring rod 1, the operator immediately begins the splicing operation of the upper and lower measuring rods 1. First, the operator inserts the bottom end of the upper measuring rod 1 into the sleeve 3 at the top of the lower measuring rod 1, while simultaneously aligning the slider 2 on the surface of the upper measuring rod 1 with the L-shaped groove 4 inside the sleeve 3. At this point, the slider 2 slides down along the L-shaped groove 4 as the measuring rod 1 is inserted, until the bottom end of the slider 2 contacts the top end of the locking block 7. Then, the operator presses down on the upper measuring rod 1, causing the slider 2 to press against the locking block 7 and drive the movable plate 6 to move downwards along the inside of the sleeve 3. During this process, the first spring 8 is compressed by the movable plate 6. Since the vertical rod 9 provides vertical guidance for the movable plate 6, it ensures that the movable plate 6 slides only vertically without rotating. When the movable plate 6 moves down to its maximum stroke, the upper measuring rod 1 is turned to make the slider 2 slide along the transverse section of the L-shaped groove 4 to the end of the groove. At this time, the slider 2 will release the vertical alignment with the locking block 7. The first spring 8 will then return to its original position and drive the movable plate 6 and the locking block 7 to move up and reset. At this time, the outer surface of the locking block 7 will abut against the outer surface of the slider 2. Thus, the upper and lower measuring rods 1 are assembled by the limiting and blocking of the slider 2 by the locking block 7, and the two measuring rods 1 are quickly spliced ​​together.

[0042] Next, the operator installs the observation plug 12. First, the operator pinches the two movable blocks 14 on the observation plug 12 and applies force to them, causing the two movable blocks 14 to move towards each other along the rectangular sliding hole. At the same time, the second spring 15 is compressed by the movable blocks 14. Then, the operator fastens the observation plug 12 onto the top of the upper sleeve 3, so that the bottom ends of the two movable blocks 14 extend into the sleeve 3. At this time, the movable blocks 14 are released. Due to the elasticity and reset effect of the second spring 15, the two movable blocks 14 will move back to their original positions along the rectangular sliding hole. Their opposite ends will then abut against the inner wall of the sleeve 3. Then, the operator rotates the observation plug 12. When the two movable blocks 14 rotate with the observation plug 12 to the slot 5 on the inner wall of the sleeve 3, the second spring 15 will drive the movable blocks 14 to quickly snap into the slot 5, completing the rapid assembly and fixation of the observation plug 12 and the sleeve 3.

[0043] The operator then inserts the insertion rod 25 into the fixing sleeve 24. Next, the operator turns the turning block 27 to rotate the screw 26, so that the end of the screw 26 presses against the surface of the insertion rod 25 to fix the insertion rod 25. Due to the design of the insertion rod 25, it can be easily inserted into the soil, thereby greatly improving the overall overturning resistance and burial stability of the device. After the device is fully assembled, the operator buries the base plate 22 in the roadbed to be monitored. The settlement of the roadbed can then be accurately monitored by observing the relative displacement changes of the upper and lower measuring rods 1.

[0044] Furthermore, the dustproof ring 28 on the outer surface of the measuring rod 1 can shield and protect the interface between the sleeve 3 and the connecting sleeve 16, effectively preventing mud and sand impurities from entering the L-shaped groove 4 and the vertical groove 17, thus avoiding jamming problems in the internal structure. When the device needs to be disassembled and recycled, the operator first pinches the two movable blocks 14 and moves them towards each other, causing the two movable blocks 14 to disengage from the slot 5, thereby releasing the connection between the observation plug 12 and the sleeve 3. Then, the operator pulls down the moving ring 11 to allow the moving ring 11 to pass through. The connecting plate 10 drives the vertical rod 9 to move down synchronously, which in turn pulls the movable plate 6 and the locking block 7 to move down synchronously, releasing the locking block 7 from limiting the slider 2. At this time, the upper measuring rod 1 is turned to reset the slider 2 along the L-shaped groove 4. Then, it is pulled up to remove the upper measuring rod 1. After that, the arc plate 21 is turned again to align the notch of the retaining ring 19 with the vertical groove 17, releasing the retaining ring 19 from limiting the slider 2. The lower measuring rod 1 can then be pulled up. Finally, the screw 26 is loosened to remove the insertion rod 25, completing the entire process of quick disassembly of the device.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roadbed settlement monitoring device, characterized in that, include: Two measuring rods (1) are arranged vertically. The interior of each measuring rod (1) is hollow. Several sliders (2) are fixedly installed on the lower side wall of each measuring rod (1). A sleeve (3) is fixedly installed on the top of each measuring rod (1). The bottom of the upper measuring rod (1) is inserted into the sleeve (3) at the top of the lower measuring rod (1). The inner wall of the sleeve (3) is provided with an L-shaped groove (4) and a slot (5). The slider (2) on the surface of the upper measuring rod (1) is slidably connected to the L-shaped groove (4) inside the sleeve (3) at the top of the lower measuring rod (1). A movable plate (6) is slidably connected inside the sleeve (3). The top of the movable plate (6) inside the upper sleeve (3) of the lower measuring rod (1) abuts against the bottom of the upper measuring rod (1). The top of each movable plate (6) is fixedly equipped with several locking blocks (7). The top of each locking block (7) abuts against the inside of the L-shaped groove (4). The locking block (7) located in the upper sleeve (3) of the lower measuring rod (1) abuts against the slider (2) located on the surface of the upper measuring rod (1). The bottom of each movable plate (6) is fixedly equipped with a first spring (8). The bottom of the first spring (8) is fixedly connected to the inner wall of the sleeve (3). The interior of each movable plate (6) is slidably connected with several vertical rods (9). The bottom of each vertical rod (9) passes through the sleeve (3) and extends into the cavity of the measuring rod (1). The vertical rods (9) are slidably connected to the interior of the sleeve (3). The bottom of each vertical rod (9) is fixedly equipped with a moving ring (11). The moving ring (11) is slidably connected to the surface of the measuring rod (1).

2. The roadbed settlement monitoring device according to claim 1, characterized in that: An observation plug (12) is located at the top of the upper sleeve (3). The observation plug (12) has rectangular sliding holes that are symmetrically distributed on the left and right sides. The rectangular sliding holes are slidably connected to movable blocks (14). There are two movable blocks (14), and the bottom ends of the two movable blocks (14) extend to the bottom of the observation plug (12) through the rectangular sliding holes. The ends of the two movable blocks (14) that are far apart from each other are abutted in the inside of the slot (5). The ends of the two movable blocks (14) that are close to each other are fixedly installed with second springs (15). The two second springs (15) are located below the observation plug (12), and the ends of the two second springs (15) that are far away from the movable blocks (14) are fixedly connected to the bottom end of the observation plug (12).

3. The roadbed settlement monitoring device according to claim 1, characterized in that: A connecting sleeve (16) is movably inserted into the bottom end of the lower measuring rod (1). A base plate (22) is fixedly installed at the bottom end of the connecting sleeve (16). A vertical groove (17) is opened inside the connecting sleeve (16). A slider (2) located on the surface of the lower measuring rod (1) is slidably connected to the inside of the vertical groove (17). An arc groove (18) is opened on the surface of the connecting sleeve (16). The inside of the connecting sleeve (16) is connected to the outside of the connecting sleeve (16) through the arc groove (18). A retaining ring (19) is movably sleeved inside the connecting sleeve (16). The bottom end of the retaining ring (19) abuts against the top end of the slider (2). The retaining ring (19) is provided with a notch corresponding to the slider (2). An arc plate (21) is fixedly installed on the side wall of the retaining ring (19). The arc plate (21) is slidably connected to the outer surface of the connecting sleeve (16).

4. The roadbed settlement monitoring device according to claim 3, characterized in that: A reinforcing rib (23) is fixedly installed at the top of the base plate (22). The reinforcing rib (23) is fixedly connected to the outer surface of the connecting sleeve (16). The reinforcing rib (23) is made of galvanized carbon steel.

5. A roadbed settlement monitoring device according to claim 3, characterized in that: Multiple fixing sleeves (24) are fixedly installed on the top of the base plate (22). Each fixing sleeve (24) has a plug rod (25) inserted inside. The bottom end of the plug rod (25) passes through the base plate (22) and extends to the bottom of the base plate (22). A screw rod (26) is threaded onto the side wall of the fixing sleeve (24). The end of the screw rod (26) near the plug rod (25) abuts against the surface of the plug rod (25).

6. A roadbed settlement monitoring device according to claim 3, characterized in that: Dustproof rings (28) are fixedly sleeved on the outer surfaces of both measuring rods (1), wherein the bottom end of the dustproof ring (28) on the surface of the upper measuring rod (1) abuts against the top end of the sleeve (3) on the lower measuring rod (1), and the bottom end of the dustproof ring (28) on the surface of the lower measuring rod (1) abuts against the top end of the connecting sleeve (16).

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