Anti-side shift and monitoring device for CRTS III type track slab curve section

Abstract

The application relates to the field of ballastless track technology and discloses a lateral shift prevention and monitoring device for a CRTS III type track plate curve section, which comprises a portal, lateral fastening mechanisms are embedded and installed at the lower sides of the two ends of the portal, a group of vertical fastening mechanisms are embedded and installed at the upper end of the portal, the lateral fastening mechanism comprises a screw rod two, one end of a connecting rod two is rotationally connected with an extrusion seat two, and one end of the connecting rod is fixedly connected with a displacement monitoring mechanism. The lateral vertical fastening mechanism, the vertical fastening mechanism, the pressure sensor and the displacement monitoring mechanism are integrated into a unified portal type system; the pressure sensor in the vertical fastening mechanism can measure and feedback the compacting force acting on the top of the track plate in real time, so that the compacting force is ensured to be sufficient to balance the floating force of the concrete; the lateral displacement monitoring mechanism can capture the slight lateral shift of the track plate with high sensitivity; and the closed-loop monitoring and active intervention on the track plate state during the pouring process are realized.

Description

Technical Field

[0001] This application relates to the field of ballastless track technology, specifically to a device for preventing lateral displacement and monitoring CRTSⅢ type track slab curved sections. Background Technology

[0002] In the construction of CRTSⅢ type slab track for high-speed railways, the laying and fixing of track slabs on curved sections is one of the key technical challenges. Due to the linear curvature of curved sections, during the pouring of self-compacting concrete, the flowing concrete will generate uneven lateral fluid pressure, buoyancy, and longitudinal force on the track slabs. This can easily cause lateral displacement, floating, or torsion of the already finely adjusted track slabs. Such disturbances during construction directly damage the high-precision spatial configuration of the track slabs, resulting in deviations from the design values ​​in the final track geometry, seriously affecting the smoothness, safety, and ride comfort of high-speed trains.

[0003] In existing technologies, lateral displacement prevention for curved track slabs is mostly achieved through decentralized temporary supports, counterweights, or simple mechanical jacks. These methods have significant shortcomings: First, the constraint force is difficult to quantify, control, and adjust, potentially leading to insufficient or excessive constraint. Second, there is a lack of real-time and accurate monitoring of the track slab's condition (such as the applied pressure and actual displacement), resulting in a degree of blindness in construction and an inability to achieve process control. Third, the temporary measures lack systematic integration, are cumbersome to install, and lack overall stability and reliability. Utility Model Content

[0004] The purpose of this invention is to provide a device for preventing lateral displacement and monitoring CRTSⅢ type track slab curves, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for preventing lateral displacement and monitoring CRTSⅢ type track slab curved sections includes a gantry. A horizontal fastening mechanism is embedded in the lower sides of both ends of the gantry, and a set of vertical fastening mechanisms is embedded in the upper end of the gantry. The horizontal fastening mechanism includes a second screw and a second connecting rod fixedly connected to the second screw. One end of the second screw is fixedly connected to a second hexagonal nut. One end of the second connecting rod is rotatably connected to a second compression seat, and a mounting sleeve is sleeved on the outside of the second connecting rod. A connecting rod is fixedly connected to the upper end of the outer side of the mounting sleeve, and a displacement monitoring mechanism is fixedly connected to one end of the connecting rod.

[0007] As a further embodiment of this utility model: the outer side of the screw two is engaged with a threaded seat two, the threaded seat two is fixed to the outer side of one end of the gantry, and the screw two passes through the inner side of one end of the gantry.

[0008] As a further improvement of this utility model: a hand-tightening bolt is embedded in the outer side of the mounting sleeve near the end of the connecting rod, and the connecting rod and the mounting sleeve are fixedly connected by the hand-tightening bolt.

[0009] As a further embodiment of this utility model: the displacement monitoring mechanism includes an outer shell fixedly connected to a connecting rod. The outer shell has a coarse cavity and a fine cavity inside. The inner diameter of the coarse cavity is much larger than that of the fine cavity. A piston is slidably connected inside the fine cavity, and a piston is slidably connected inside the coarse cavity. A piston rod is fixedly connected through the inner side of the piston. One end of the piston rod is fixedly connected to a top head on the outer side of the outer shell, and a guide tube is slidably sleeved on the other end of the piston rod. A spring is sleeved on both the guide tube and the outer side of the piston rod. One end of the spring is connected to the piston, and the other end of the spring is connected to the side wall of the coarse cavity.

[0010] As a further embodiment of this utility model: the second piston divides the coarse cavity into two independent left chamber 1 and right chamber 1, and the first piston divides the fine cavity into two independent left chamber 2 and right chamber 2. The left chamber 1 is connected to the left chamber 2 through a connecting pipe 1, and the right chamber 1 is connected to the right chamber 2 through a connecting pipe 2. A float 1 is slidably disposed on the inner side of the connecting pipe 1, and a float 2 is slidably disposed on the inner side of the connecting pipe 2.

[0011] As a further embodiment of this utility model: an air valve is embedded in one end of the outer shell away from the top head, a sealing ring is embedded in the junction of the outer shell and the piston rod, and a transparent window is provided on the outer side of the outer shell in the fine cavity, with scale lines provided on the transparent window.

[0012] As a further embodiment of this utility model: the vertical fastening mechanism includes a screw and a connecting rod fixedly connected to the lower end of the screw. A pressure sensor is fixedly connected to the inner side of the connecting rod, and a compression seat is rotatably connected to the lower end of the outer side of the connecting rod. A threaded seat is engaged with the outer side of the screw, and an internal hexagonal nut is fixedly connected to the upper end of the screw. The threaded seat is fixedly installed on the upper end of the gantry by screws, and the screw passes through the upper end of the gantry.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This utility model integrates the horizontal and vertical fastening mechanisms, the vertical fastening mechanism, the pressure sensor, and the displacement monitoring mechanism into a unified gantry system. The pressure sensor in the vertical fastening mechanism can measure and feedback the clamping force acting on the top of the track slab in real time, ensuring that it is sufficient to balance the buoyancy of the concrete. The lateral displacement monitoring mechanism can highly sensitively capture the minute lateral displacement of the track slab. This realizes closed-loop monitoring and active intervention of the track slab status during the pouring process.

[0015] The screw-driven lateral and vertical fastening mechanisms apply stable and precisely adjustable fastening forces to the reinforced concrete base and track slab. Operators can precisely tighten the screws using tools as needed, providing reliable constraints from three directions to form a stable gantry-type fixing system that effectively resists the multidirectional fluid pressure of the concrete. Attached Figure Description

[0016] Figure 1 A schematic diagram of the anti-lateral displacement and monitoring device used in the curved section of the CRTSⅢ type track slab;

[0017] Figure 2 This is a schematic diagram of the lateral fastening mechanism in the anti-lateral displacement and monitoring device used in the curved section of the CRTSⅢ type track slab;

[0018] Figure 3 This is a schematic diagram of the vertical fastening mechanism in the anti-lateral displacement and monitoring device used in the curved section of the CRTSⅢ type track slab;

[0019] Figure 4 This is a schematic diagram of the displacement monitoring mechanism in the anti-lateral displacement and monitoring device used in the curved section of the CRTSⅢ type track slab;

[0020] Figure 5 This is a schematic diagram of the anti-lateral displacement and monitoring device used in the curved section of the CRTSⅢ type track slab during operation.

[0021] In the diagram: 1. Gantry; 2. Vertical fastening mechanism; 21. Compression seat one; 22. Connecting rod one; 23. Pressure sensor; 24. Threaded seat one; 25. Screw one; 26. Socket head cap nut one; 3. Horizontal fastening mechanism; 31. Compression seat two; 32. Connecting rod two; 33. Hand-tightening bolt; 34. Socket head cap nut two; 35. Screw two; 36. Threaded seat two; 37. Mounting sleeve; 38. Connecting rod; 39. Displacement monitoring mechanism; 391. Outer 392. Shell; 393. Piston II; 394. Connecting Pipe I; 395. Float I; 396. Fine Cavity; 397. Air Valve; 398. Transparent Window; 399. Piston I; 300. Float II; 301. Connecting Pipe II; 302. Spring; 303. Guide Pipe; 304. Piston Rod; 305. Top Head; 306. Sealing Ring; 307. Coarse Cavity; 4. Grouting Hole; 5. Reinforced Concrete Base; 6. Self-Compacting Concrete Layer; 7. Track Slab. Detailed Implementation

[0022] Please see Figures 1-5 In this embodiment of the invention, the anti-lateral displacement and monitoring device for the curved section of the CRTSⅢ type track slab includes a gantry 1. A horizontal fastening mechanism 3 is embedded in the lower side of both ends of the gantry 1, and a set of vertical fastening mechanisms 2 is embedded in the upper end of the gantry 1. After the reinforced concrete base 5 and the track slab 7 located above the reinforced concrete base 5 are fixedly installed and the formwork is completed, the gantry 1 is then fixed to the reinforced concrete base 5 by the set of horizontal fastening mechanisms 3. Finally, the set of vertical fastening mechanisms 2 presses down on the track slab 7, causing the reinforced concrete base 1 to be secured. The base 5 and the track slab 7 are fixed together. When self-compacting concrete is poured between the reinforced concrete base 5 and the track slab 7 through the grouting hole 4 at the upper end of the track slab 7, a self-compacting concrete layer 6 is formed after the self-compacting concrete solidifies. During the pouring of the self-compacting concrete, the track slab 7 is prevented from shifting laterally by the cooperation of the gantry 1, the vertical fastening mechanism 2, and the horizontal fastening mechanism 3, ensuring the stability of the track slab 7. Multiple sets of gantry 1, vertical fastening mechanism 2, and horizontal fastening mechanism 3 can be installed on the reinforced concrete base 5 and the track slab 7 to improve their stability. Figure 5 As shown.

[0023] exist Figure 1 and Figure 2In the middle, the transverse fastening mechanism 3 includes a screw 35 and a connecting rod 32 fixedly connected to the screw 35. One end of the screw 35 is fixedly connected to an internal hexagon nut 34. One end of the connecting rod 32 is rotatably connected to a compression seat 31, and an installation sleeve 37 is sleeved on the outside of the connecting rod 32. The upper end of the outer side of the installation sleeve 37 is fixedly connected to a connecting rod 38. One end of the connecting rod 38 is fixedly connected to a displacement monitoring mechanism 39. A threaded seat 36 is engaged with the outer side of the screw 35. Seat 2 36 is fixed to the outer side of one end of the gantry 1, and screw 2 35 passes through the inner side of one end of the gantry 1. Therefore, by turning the internal hex nut 2 34 with a hex wrench, the internal hex nut 2 34 drives screw 2 35 and connecting rod 2 32 to rotate together. Screw 2 35 engages and rotates inside the threaded seat 2 36, thereby driving the pressing seat 2 31 to move in the horizontal direction. Through the pressing seat 2 31 pressing against the side of the reinforced concrete base 5, the gantry 1 can be securely fixed to the reinforced concrete base 5. Figure 5 As shown.

[0024] exist Figure 1 and Figure 3 In the vertical fastening mechanism 2, there is a screw 25 and a connecting rod 22 fixedly connected to the lower end of the screw 25. A pressure sensor 23 is fixedly connected to the inner side of the connecting rod 22, and a compression seat 21 is rotatably connected to the lower end of the outer side of the connecting rod 22. A threaded seat 24 is engaged with the outer side of the screw 25, and an internal hex nut 26 is fixedly connected to the upper end of the screw 25. The threaded seat 24 is fixedly installed on the upper end of the gantry 1 by screws, and the screw 25 passes through the upper end of the gantry 1. The internal hex nut 26 is turned with a hex wrench. The angle nut 26 drives the screw 25, connecting rod 22, and pressure sensor 23 to rotate together. The screw 25 engages with the inner side of the hexagonal nut 26, thereby driving the extrusion seat 21 to move vertically. The extrusion seat 21 presses against the top of the track slab 7, fixing the track slab 7 and preventing lateral displacement, ensuring its stability. The pressure sensor 23 monitors the pressure of the extrusion seat 21 on the track slab 7 to ensure that this pressure can counteract the buoyancy force of the self-compacting concrete on the track slab 7 during pouring. Figure 5 As shown;

[0025] exist Figure 2 and Figure 4In the displacement monitoring mechanism 39, there is an outer shell 391 fixedly connected to the connecting rod 38. The outer shell 391 has a coarse cavity 306 and a fine cavity 395 inside. The inner diameter of the coarse cavity 306 is much larger than that of the fine cavity 395. A piston 398 is slidably connected inside the fine cavity 395. A piston 392 is slidably connected inside the coarse cavity 306. A piston rod 303 is fixedly connected through the inner side of the piston 392. One end of the piston rod 303 is located outside the outer shell 391. A top head 304 is fixedly connected, and a guide tube 302 is slidably sleeved at the other end of the piston rod 303. A spring 301 is sleeved on the outer side of the guide tube 302 and the piston rod 303. One end of the spring 301 is connected to the second piston 392, and the other end of the spring 301 is connected to the side wall of the coarse cavity 306. The second piston 392 divides the coarse cavity 306 into two independent left chambers and right chambers. The first piston 398 divides the fine cavity 395 into two independent left chambers. The second and right chambers are connected, with the left chamber 1 connected to the left chamber 2 via a connecting pipe 393, and the right chamber 1 connected to the right chamber 2 via a connecting pipe 300. A float 394 is slidably mounted on the inner side of the connecting pipe 393, and a float 399 is slidably mounted on the inner side of the connecting pipe 300. Hydraulic oil is filled in the coarse cavity 306, and compressed air is filled in the narrow cavity 395. The hydraulic oil and compressed air are isolated by floats 394 and 399, respectively. (Outer shell) A valve 396 is embedded in one end of 391 away from the top head 304. Compressed air can be supplied to the narrow cavity 395 through the valve 396 to adjust its air pressure. A sealing ring 305 is embedded in the junction of the outer shell 391 and the piston rod 303 to prevent oil leakage at the junction of the outer shell 391 and the piston rod 303. A transparent window 397 is opened on the outer side of the outer shell 391 at the narrow cavity 395. The transparent window 397 is provided with scale lines.

[0026] A hand-tightening bolt 33 is embedded in the outer side of the mounting sleeve 37 near the end of the connecting rod 38. The connecting rod 32 and the mounting sleeve 37 are fixedly connected by the hand-tightening bolt 33. Therefore, after loosening the hand-tightening bolt 33 counterclockwise, the mounting sleeve 37 moves along the connecting rod 32, which drives the connecting rod 38 and the displacement monitoring mechanism 39 to move together, so that the top head 304 on the displacement monitoring mechanism 39 is pressed tightly against the side of the curved section of the track slab 7.

[0027] During the self-compacting concrete pouring process, when the curved section of track slab 7 shifts, the top head 304 is compressed or stretched, pushing or pulling the piston rod 303 to move. The piston rod 303 drives the piston 2 392 to slide inside the coarse cavity 306. At the same time, the piston 2 392 pushes or pulls the spring 301. At this time, the volumes of the left chamber 1 and the right chamber 1 in the coarse cavity 306 change simultaneously, that is, one increases and the other decreases. This causes the oil pressure in the two chambers to change. For example, when the piston 2 392 moves towards the left chamber 1, the pressure in the left chamber 1 increases, causing some hydraulic oil to flow into the connecting pipe 1 393 and push the float 1 394 towards the left chamber 2. As the piston moves, the air pressure in the left chamber increases, pushing piston 398 in the narrow cavity 395 towards the right chamber. The increased air pressure in the right chamber then pushes float 399 in the connecting pipe 300 towards the right chamber in the wide cavity 306. Since the inner diameter of the wide cavity 306 is much larger than that of the narrow cavity 395, the small movement of piston 392 in the wide cavity 306 is magnified to create a larger movement of piston 398 in the narrow cavity 395. The movement distance of piston 398 can be clearly observed through the scale lines on the transparent window 397, significantly improving the sensitivity and accuracy of the displacement monitoring of the curved section of track slab 7.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for preventing lateral displacement and monitoring CRTSⅢ type track slab curves, comprising a gantry (1), characterized in that, A horizontal fastening mechanism (3) is embedded in the lower side of both ends of the gantry (1), and a set of vertical fastening mechanisms (2) is embedded in the upper end of the gantry (1). The horizontal fastening mechanism (3) includes a screw (35) and a connecting rod (32) fixedly connected to the screw (35). One end of the screw (35) is fixedly connected to an internal hexagonal nut (34). One end of the connecting rod (32) is rotatably connected to a pressing seat (31), and an installation sleeve (37) is sleeved on the outside of the connecting rod (32). The upper end of the outside of the installation sleeve (37) is fixedly connected to a connecting rod (38), and one end of the connecting rod (38) is fixedly connected to a displacement monitoring mechanism (39).

2. The anti-lateral displacement and monitoring device for the curved section of CRTSⅢ type track slab according to claim 1, characterized in that, The outer side of the screw two (35) is engaged with the threaded seat two (36), the threaded seat two (36) is fixed on the outer side of one end of the gantry (1), and the screw two (35) passes through the inner side of one end of the gantry (1).

3. The anti-lateral displacement and monitoring device for the curved section of CRTSⅢ type track slab according to claim 1, characterized in that, A hand-tightening bolt (33) is embedded in the outer side of the mounting sleeve (37) near the connecting rod (38), and the connecting rod (32) and the mounting sleeve (37) are fixedly connected by the hand-tightening bolt (33).

4. The anti-lateral displacement and monitoring device for the curved section of CRTSⅢ type track slab according to claim 1, characterized in that, The displacement monitoring mechanism (39) includes an outer shell (391) fixedly connected to a connecting rod (38). The outer shell (391) has a coarse cavity (306) and a fine cavity (395) inside. The inner diameter of the coarse cavity (306) is much larger than that of the fine cavity (395). A piston (398) is slidably connected inside the fine cavity (395), and a piston (392) is slidably connected inside the coarse cavity (306). The inner side of the piston (392) is penetrated by a fixed connecting rod (38). A piston rod (303) is connected to the piston rod (303). One end of the piston rod (303) is fixedly connected to a top head (304) on the outside of the outer shell (391), and a guide tube (302) is slidably sleeved on the other end of the piston rod (303). A spring (301) is sleeved on the outside of the guide tube (302) and the piston rod (303). One end of the spring (301) is connected to the piston (392), and the other end of the spring (301) is connected to the side wall of the coarse cavity (306).

5. The anti-lateral displacement and monitoring device for the curved section of CRTSⅢ type track slab according to claim 4, characterized in that, The piston 2 (392) divides the coarse cavity (306) into two independent left chamber 1 and right chamber 1, and the piston 1 (398) divides the fine cavity (395) into two independent left chamber 2 and right chamber 2. The left chamber 1 is connected to the left chamber 2 through the connecting pipe 1 (393), and the right chamber 1 is connected to the right chamber 2 through the connecting pipe 2 (300). A float 1 (394) is slidably disposed on the inner side of the connecting pipe 1 (393), and a float 2 (399) is slidably disposed on the inner side of the connecting pipe 2 (300).

6. The anti-lateral displacement and monitoring device for the curved section of CRTSⅢ type track slab according to claim 4, characterized in that, A valve (396) is embedded in one end of the outer shell (391) away from the top head (304). A sealing ring (305) is embedded in the junction of the outer shell (391) and the piston rod (303). A transparent window (397) is provided on the outer side of the outer shell (391) in the narrow cavity (395). A scale line is provided on the transparent window (397).

7. The anti-lateral displacement and monitoring device for the curved section of CRTSⅢ type track slab according to claim 1, characterized in that, The vertical fastening mechanism (2) includes a screw (25) and a connecting rod (22) fixedly connected to the lower end of the screw (25). A pressure sensor (23) is fixedly connected to the inner side of the connecting rod (22), and a compression seat (21) is rotatably connected to the lower end of the outer side of the connecting rod (22). A threaded seat (24) is engaged with the outer side of the screw (25), and an internal hexagonal nut (26) is fixedly connected to the upper end of the screw (25). The threaded seat (24) is fixedly installed on the upper end of the gantry (1) by screws, and the screw (25) passes through the upper end of the gantry (1).

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