Subsidence and inclination monitoring device for high-speed ramp around subway station

Abstract

The utility model relates to road safety monitoring technical field, concretely is the subway station periphery expressway ramp settlement inclination monitoring devices, including butt joint axle, butt joint axle one end is fixed on the around interface strain pull rope's gin, the inside fixed sleeve of gin has the torsional spring mechanism of feeling strain pull rope tension change, be provided with the stress release mechanism for releasing torsional spring mechanism in initial elastic potential energy on torsional spring mechanism, this subway station periphery expressway ramp settlement inclination monitoring devices, through side support board to sleeve accept the one end of tension torsional spring, strain pull rope and anchor after fixing utilize rotary cylinder and make both sides pressure strain gauge value zero simultaneously, complete the pressure release of tension torsional spring, in the process by rotating platform to provide rotating support, guarantee the pressure of pressure strain gauge always perpendicular to the stress surface, guaranteeed the data precision of pressure strain gauge, avoided tension torsional spring long time in the tensile state accumulated elastic fatigue and caused the tension attenuation, thereby improved the monitoring precision of device.

Description

Technical Field

[0001] This utility model relates to the field of road safety monitoring technology, specifically a monitoring device for settlement and tilt of highway ramps around subway stations. Background Technology

[0002] As a connecting hub, highway ramps may collapse or overturn if structural instability occurs due to settlement / tilting, such as support detachment or beam cracks. Monitoring can provide early warning of major risks. The soil around railway stations is easily disturbed by construction, such as foundation pit excavation or shield tunneling, which can easily cause uneven settlement of the ramp foundation. Monitoring can prevent chain-reaction structural damage. In the structural design of highway ramps, the roadside slope fill or cut slope is one of the key factors that need to be considered, as its stability directly affects the safety and long-term durability of the ramp.

[0003] To address the deformation monitoring problem of ramp slope structures, Chinese Patent Publication No. CN215338299U proposes a road slope settlement and deformation monitoring device, including a monitoring box. The key feature is that the monitoring box is divided into a strain sensing chamber and a circuit control chamber by a partition. A winch is installed in the strain sensing chamber, and a spring is sleeved on the winch's shaft. A strain-pulling rope is wound around the winch. A through hole is provided in the wall of the strain sensing chamber for the strain-pulling rope to pass through. The winch's shaft passes through the partition and extends into the circuit control chamber, and a turntable is fixedly connected to the end of the shaft. A sensing element is installed on the turntable.

[0004] The aforementioned utility model transmits the traction force generated during settlement or deformation through a strain gauge rope connected to the anchor. The traction force pulls the winch to rotate, enabling the sensor to receive signals and monitor road changes. The above structure provides a reset effect through a winch spring connected to the winch. However, the structure of the winch spring, strain gauge rope, and winch is simple, and it is difficult to release the stress in the winch spring after the anchor is placed. The winch spring, which provides the rotational torque, is prone to elastic fatigue due to prolonged tension, resulting in tension attenuation and affecting the monitoring accuracy of the device. Therefore, we propose a settlement and tilt monitoring device for highway ramps around subway stations. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a settlement and tilt monitoring device for highway ramps surrounding subway stations, comprising a docking shaft. One end of the docking shaft is fixed to a winch around which a strain gauge rope is wound. A torsion spring mechanism for sensing changes in the tension of the strain gauge rope is fixedly sleeved inside the winch. A stress release mechanism for releasing the initial elastic potential energy in the torsion spring mechanism is provided on the torsion spring mechanism.

[0006] In some embodiments, the torsion spring mechanism includes a mounting frame rotatably connected to a groove inside the winch, a stressed torsion spring is sleeved on the mounting frame, one end of the stressed torsion spring is fixed to the mounting frame, and a side support plate is rotatably connected to one side of the mounting frame.

[0007] In some embodiments, a rotating platform is connected to a through hole in the side support plate via a bearing. A groove in the rotating platform is slidably connected to the other end of a torsion spring. Pressure strain gauges for collecting pressure changes are symmetrically arranged on the inner wall of the groove in the rotating platform. A top pressure member is attached to the pressure strain gauge and is slidably connected to both sides of one end of the torsion spring.

[0008] In some embodiments, the stress relief mechanism includes a fixed frame fixedly mounted on a winch, a groove on one side of the fixed frame rotatably connecting a side support plate, a top pressure block for locking the side support plate is slidably connected in a square groove on the side wall of the side support plate, and a high-pressure spring for retracting the top pressure block in the square groove is provided between the top pressure block and the side support plate.

[0009] In some embodiments, a semi-circular side slot is provided on one side of the top pressing block, and a push head corresponding to the shape of the side slot is slidably connected in the side slot. The push head is fixed on the output end of the locking cylinder, and the locking cylinder is uniformly fixed on the side support plate.

[0010] In some embodiments, a docking frame is provided on the side support plate, the docking frame is fixedly connected to a rotary cylinder for driving the side support plate to rotate, and a support shaft is fixedly connected to the rotary cylinder.

[0011] This utility model has at least the following beneficial effects:

[0012] This invention uses a fixed frame to rotatably support the side support plate. The side support plate is rotatably connected to the mounting frame and simultaneously fitted onto one end of a torsion spring, forming a fixed structure for one end of the torsion spring. After the monitoring device is installed, the strain gauge rope is wound around the winch, and the anchor at the traction end is embedded in the ramp soil. One end of the torsion spring rotates with the winch, and the other end is connected to a rotary cylinder via a docking frame. After the strain gauge rope and anchor are initially fixed, the rotary cylinder drives the side support plate to rotate, causing the pressure strain gauges contacted by the symmetrically arranged pressure components on the rotary cylinder to simultaneously return to zero, thus releasing the pressure of the torsion spring. During the adjustment of the pressure strain gauge values, a rotating platform provides rotational support. During the process of the torsion spring's elastic potential energy changing and causing morphological distortion, the rotating table ensures that the pressure of the top pressure component on the pressure strain gauge is always perpendicular to the direction of force on the pressure strain gauge, thus ensuring the data accuracy of the pressure strain gauge. Afterwards, the monitoring process can begin by keeping the pressure supply of the rotary cylinder constant. The strain cable wound on the winch will sense the positional change of the anchor, thereby pulling the winch to rotate. In conjunction with the docking shaft, the displacement change is collected to detect the settlement or tilt of the highway ramps around the subway station. During the monitoring setup, the elastic force of the torsion spring is released to avoid the torsion spring being in a tensile state for a long time, accumulating elastic fatigue and causing tension attenuation, thereby improving the monitoring accuracy of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is an exploded view of part of the structure of this utility model;

[0015] Figure 3 This is a schematic diagram showing the assembly position of the top pressure block in this utility model;

[0016] Figure 4 This is a partial exploded view of Embodiment 4 of the present invention;

[0017] Figure 5 for Figure 4 A magnified view of a portion of region A in the middle.

[0018] In the diagram: 1-Dating shaft; 2-Windmill; 3-Torsion spring mechanism; 4-Stress relief mechanism; 31-Mounting bracket; 32-Forced torsion spring; 33-Side support plate; 34-Rotating table; 35-Pressure strain gauge; 36-Top pressing component; 41-Fixing bracket; 42-Top pressing block; 43-High pressure spring; 44-Side groove; 45-Push head; 46-Locking cylinder; 47-Dating bracket; 48-Rotating cylinder; 49-Support shaft; 101-Connecting seat; 102-Wedge groove; 103-Dating cylinder; 104-Wedge block. Detailed Implementation

[0019] 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.

[0020] Example 1:

[0021] Please see Figure 1-3 This utility model provides a technical solution: a settlement and tilt monitoring device for highway ramps around subway stations, including a docking shaft 1. One end of the docking shaft 1 is fixed to a winch 2 around which a strain gauge rope is wound. A torsion spring mechanism 3, which senses changes in the tension of the strain gauge rope, is fixedly sleeved inside the winch 2. A stress release mechanism 4 is provided on the torsion spring mechanism 3 to release the initial elastic potential energy in the torsion spring mechanism 3. The structure of the winch 2 and the strain gauge rope is fixed to the monitoring point by anchors on the rope anchor, directly converting the small settlement or tilt displacement of the ground into the rotation of the winch 2. The docking shaft 1 then outputs a high-resolution displacement signal to ensure data accuracy. The torsion spring mechanism 3 provides elastic support. To ensure continuous transmission of displacement signals, and to drive the winch 2 to reset after the strain cable loses traction, the elastic deformation offsets sudden external forces, avoiding false measurements caused by mechanical impact and improving long-term monitoring stability. In the initial stage of installation, the stress release mechanism 4 can actively release the initial stress of the torsion spring, eliminating the influence of assembly errors or uneven preload on the monitoring benchmark, ensuring that the system starts from a "zero stress" state and improving the reliability of initial data. During the monitoring process, the strain cable wound on the winch 2 will sense the positional changes of the anchors, thereby pulling the winch 2 to rotate, and cooperate with the docking shaft 1 to collect displacement changes to detect the settlement or tilt of the highway ramps around the subway station.

[0022] Example 2:

[0023] Please see Figure 2-3The torsion spring mechanism 3 includes a mounting frame 31, which is rotatably connected to a groove inside the winch 2. A torsion spring 32 is sleeved on the mounting frame 31, and one end of the torsion spring 32 is fixed to the mounting frame 31. A side support plate 33 is rotatably connected to one side of the mounting frame 31. A rotating platform 34 is connected to a through hole in the side support plate 33 via a bearing. A groove in the rotating platform 34 slidably connects to the other end of the torsion spring 32. Pressure strain gauges 35, which collect pressure changes, are symmetrically arranged on the inner wall of the groove in the rotating platform 34. A pressure member 36 is attached to the pressure strain gauge 35 and slidably connected to both sides of one end of the torsion spring 32. The mounting frame 31 serves as the support and rotation hub for the torsion spring 32, enabling the entire torsion spring mechanism 3 to rotate with the winch 2 and providing stability. The torsion spring mounting platform allows the winch 2 to rotate freely, preventing the torsion spring from directly bearing radial loads. The side support plate 33 serves as the movable fulcrum of the torsion spring mechanism 3, and is connected to the rotating table 34 via bearings, allowing the end of the torsion spring to rotate freely. The end of the torsion spring is slidably connected via a groove, converting the deformation of the torsion spring into a small rotation of the rotating table 34. The pressure strain gauges 35 symmetrically arranged inside are used to quantify the pressure applied by the torsion spring and realize electrical signal output. During the adjustment of the pressure strain gauge 35 value, the rotating table 34 provides rotational support. During the process of the elastic potential energy change of the stressed torsion spring 32 causing shape distortion, the rotating table 34 can ensure that the pressure of the top pressure member 36 on the pressure strain gauge 35 is always perpendicular to the force direction of the pressure strain gauge 35, thereby ensuring the data accuracy of the pressure strain gauge 35.

[0024] Example 3:

[0025] Please see Figure 2-3 The stress relief mechanism 4 includes a fixed frame 41 fixedly mounted on the winch 2. A groove on one side of the fixed frame 41 is rotatably connected to a side support plate 33. A square groove on the side wall of the side support plate 33 is slidably connected to a pressing block 42 for locking the side support plate 33. A high-pressure spring 43 is provided between the pressing block 42 and the side support plate 33 to retract the pressing block 42 into the square groove. A semi-circular side slot 44 is provided on one side of the pressing block 42. A push head 45 corresponding to the shape of the side slot 44 is slidably connected to the side slot 44. The push head 45 is fixed to the output end of the locking cylinder 46. The locking cylinder 46 is evenly fixed on the side support plate 33. A docking frame 47 is provided on the side support plate 33. The docking frame 47 is fixedly connected to the rotary cylinder 48 used to drive the rotation of the side support plate 33. A support shaft 49 is fixedly connected to the rotary cylinder 48. During the transportation of the device, the pressure input by the locking cylinder 46 drives the push head 45 to be fully embedded in the side groove 44, thereby pressing the top block 42 against the inner wall of the fixed frame 41 and locking the entire torsion spring mechanism 3, reducing the impact of vibration on the accuracy of the device during transportation.

[0026] The side support plate 33 is rotated and supported by the fixed frame 41. The side support plate 33 is rotatably connected to the mounting frame 31 and simultaneously fitted with one end of the torsion spring 32, forming a fixed structure for one end of the torsion spring 32. After the monitoring device is installed, the strain cable is wound around the winch 2, and the anchor on the traction end is embedded in the ramp soil. One end of the torsion spring 32 rotates with the winch 2, and the other end is connected to the rotary cylinder 48 through the docking frame 47. After the strain cable and anchor are initially fixed, the rotary cylinder 48 drives the side support plate 33 to rotate, so that the pressure strain gauges 35 contacted by the symmetrically arranged top pressure members 36 on the rotary cylinder 48 return to zero at the same time, thus completing the pressure release of the torsion spring 32. During the monitoring setup, the elastic force of the torsion spring 32 is released, avoiding the accumulation of elastic fatigue caused by the torsion spring being in a tensile state for a long time, thereby improving the monitoring accuracy of the device.

[0027] Example 4:

[0028] Please see Figure 4-5This utility model provides a technical solution: a settlement and tilt monitoring device for highway ramps around subway stations, including a docking shaft 1. One end of the docking shaft 1 is fixed to a winch 2 around which a strain gauge rope is wound. A torsion spring mechanism 3 that senses changes in the tension of the strain gauge rope is fixedly sleeved inside the winch 2. A stress release mechanism 4 for releasing the initial elastic potential energy in the torsion spring mechanism 3 is provided on the torsion spring mechanism 3. The docking frame 47 in the above structure is replaced with a connecting seat 101 as the docking structure between the side support plate 33 and the rotary cylinder 48. An annular groove is provided in the connecting seat 101. A wedge-shaped groove 102 is evenly provided on one side near the side support plate 33. The annular groove of the connecting seat 101 is slidably connected to the output end of the docking cylinder 103. The docking cylinder 103 is evenly fixed on the flange on the output end of the rotary cylinder 48, and the output end of the docking cylinder 103 is provided with a wedge-shaped block 104 corresponding to the wedge-shaped groove 102. When the pressure strain gauges 35 on both sides are under pressure after the device is installed, the locking cylinder 46 drives the push head 45 to retract. The push block 42 retracts into the square groove under the elastic force of the high-pressure spring 43. At this time, the side support plate 33 rotates and connects. In the fixed frame 41, the torsion spring 32 releases its elastic force to rotate the side support plate 33. Subsequently, the rotary cylinder 48 drives the docking cylinder 103 on the flange to rotate, so that the wedge block 104 aligns with the wedge groove 102. The docking cylinder 103 drives the wedge block 104 to engage in the wedge groove 102, thus docking the side support plate 33 with the rotary cylinder 48. Then, the rotation of the rotary cylinder 48 is used to adjust the force change of the pressure strain gauge 35 until the values ​​of the pressure strain gauges 35 on both sides are zero, and the torsion spring 32 fully releases its elastic force. After that, the rotation is maintained. While the side support plate 33 of the cylinder 48 stops rotating due to constant pressure, it provides support for one side of the winch 2. The strain gauge rope wound on the winch 2 senses the positional change of the anchor, thereby pulling the winch 2 to rotate. In conjunction with the docking shaft 1, the displacement change is collected to detect the settlement or tilt of the high-speed ramps around the subway station. The engagement of the wedge block 104 and the wedge groove 102 achieves a rapid rigid connection, replacing the traditional bolt fixing. It can be unmanned on-site. Through cylinder drive and closed-loop control of strain gauges, automatic leveling is achieved after installation, reducing human intervention errors.

[0029] 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 settlement and tilt monitoring device for highway ramps surrounding subway stations, comprising a docking shaft (1), characterized in that: One end of the docking shaft (1) is fixed on the winch (2) around which the strain tension rope is wound. The winch (2) is fitted with a torsion spring mechanism (3) that senses the change in the tension of the strain tension rope. The torsion spring mechanism (3) is provided with a stress release mechanism (4) for releasing the initial elastic potential energy in the torsion spring mechanism (3).

2. The settlement and tilt monitoring device for highway ramps surrounding subway stations according to claim 1, characterized in that: The torsion spring mechanism (3) includes a mounting frame (31), which is rotatably connected to a groove inside the winch (2). A torsion spring (32) is sleeved on the mounting frame (31), and one end of the torsion spring (32) is fixed on the mounting frame (31). A side support plate (33) is rotatably connected to one side of the mounting frame (31).

3. The settlement and tilt monitoring device for highway ramps surrounding subway stations according to claim 2, characterized in that: A rotating platform (34) is connected to the through hole on the side support plate (33) via a bearing. The groove on the rotating platform (34) is slidably connected to the other end of the torsion spring (32). Pressure strain gauges (35) for collecting pressure changes are symmetrically arranged on the inner wall of the groove on the rotating platform (34). A top pressure member (36) is attached to the pressure strain gauge (35). The top pressure member (36) is slidably connected to both sides of one end of the torsion spring (32).

4. The settlement and tilt monitoring device for highway ramps surrounding subway stations according to claim 1, characterized in that: The stress relief mechanism (4) includes a fixed frame (41) fixedly mounted on the winch (2). A groove on one side of the fixed frame (41) is rotatably connected to a side support plate (33). A top pressure block (42) for locking the side support plate (33) is slidably connected in a square groove on the side wall of the side support plate (33). A high pressure spring (43) for retracting the top pressure block (42) in the square groove is provided between the top pressure block (42) and the side support plate (33).

5. The settlement and tilt monitoring device for highway ramps surrounding subway stations according to claim 4, characterized in that: The top pressing block (42) has a semi-circular side slot (44) on one side. A push head (45) corresponding to the shape of the side slot (44) is slidably connected in the side slot (44). The push head (45) is fixed on the output end of the locking cylinder (46). The locking cylinder (46) is evenly fixed on the side support plate (33).

6. The settlement and tilt monitoring device for highway ramps surrounding subway stations according to claim 5, characterized in that: A docking frame (47) is provided on the side support plate (33), and the docking frame (47) is fixedly connected to a rotary cylinder (48) for driving the side support plate (33) to rotate. A support shaft (49) is fixedly connected to the rotary cylinder (48).

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