Subway steel rail correction equipment and method thereof

Abstract

The invention relates to the technical field of steel rail correction processing, and discloses subway steel rail correction equipment and a method thereof, and the subway steel rail correction equipment comprises a workbench, four pairs of positioning frames, a vertical plate and an ejector rod. When a steel rail is clamped, an electric push rod drives a synchronous plate to slide, the synchronous plate synchronously pushes an extrusion arm rotationally connected with a positioning frame to rotate, the extrusion arm slides towards the side wall of the steel rail and clamps the side wall of the steel rail, and in the process that the extrusion arm extrudes and clamps the steel rail, an ejector rod on the side wall of the extrusion arm extrudes the side wall of the steel rail; the ejector rod slides towards the interior of the extrusion arm, the positioning sliding block is pulled to move downwards through the swing arm, finally, the pressing roller installed on the positioning sliding block is made to move towards the steel rail, in the downward moving process of the positioning sliding block, the push plate on the side wall of the positioning sliding block slides along the guide plate, finally, the pressing roller slides to the position above the steel rail, and the top of the steel rail is extruded and clamped. And at the moment, the ejector rod clamps the side wall of the steel rail, the purpose of positioning the steel rail is finally achieved, and the correction efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rail correction processing, and in particular, relates to a subway rail correction device and a method thereof. Background Art

[0002] With the continuous expansion of urban subway networks, the safety and stability of subway operations are becoming increasingly important. Rails, as the basic supporting structure for subway trains, are prone to deformation under the influence of high-frequency pressure, vibration and complex geological environment of trains for a long time. If this problem is not solved in time, it will not only increase the wear of train wheels and rails and shorten their service life, but may also cause serious safety accidents such as bumps, shaking and even derailment during train operation, threatening the safety of passengers' lives and property.

[0003] Traditional correction equipment exposes many problems in actual operation. Existing correction equipment often clamps the rails front and back and up and down respectively, requiring two clamping operations, which makes the overall operation complicated. In addition, the traditional upper and lower clamping method will affect the loading and unloading of the rails. During the loading and unloading process, the rails and the clamps may collide, causing damage to the clamps or rails, resulting in unnecessary losses.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] In order to solve the technical problem that the existing correction equipment often clamps the rails front and back and up and down respectively, and needs to clamp twice, which makes the overall operation complicated, and the traditional up and down clamping method affects the loading and unloading of the rails, and may cause the rails and the clamps to collide during the loading and unloading process, resulting in damage to the clamps or rails, causing unnecessary losses, the basic concept of the technical solution adopted by the present invention is: A subway rail correction device comprises a workbench, four pairs of positioning frames, a vertical plate and a mandrel.

[0006] A fixed platform is installed on the workbench, a hydraulic push rod is installed on the fixed platform, a pressing plate is installed on the output end of the hydraulic push rod, and the bottom of the pressing plate corresponds to the bending position of the rail placed on the surface of the workbench; Four pairs of positioning frames are symmetrically installed on the workbench, and the steel rails are placed at the center of the positioning frames. A pair of extrusion arms are rotatably installed on the side walls of each pair of positioning frames. The pair of extrusion arms are V-shaped, and a synchronization plate is horizontally slidably arranged on the side walls of the pair of extrusion arms. The synchronization plate corresponds to the electric push rod fixedly installed on the surface of the workbench; The vertical plate is installed on the surface of the corresponding extrusion arm, and a positioning slider is slidably provided on the surface of the vertical plate. A push plate is slidably provided at one end of the positioning slider, and a pressing roller is rotatably installed on the push plate. A guide plate is provided on the side wall of the extrusion arm, and the guide plate is in an inclined state, and the height of the end of the guide plate close to the side wall of the vertical plate is higher than the height of the other end, and the guide plate is slidably connected with the push plate, and the guide plate is used to guide the moving track of the push plate and the pressing roller; The push rod is slidably inserted in the corresponding extrusion arm, and the push rod corresponds to the side wall of the rail. A fixed block is installed at the end of the push rod, and a swing arm is rotatably installed on the fixed block. The end of the swing arm is rotatably connected to the side wall of the positioning slider.

[0007] As a preferred embodiment of the present invention, a control cabinet is fixedly installed at the bottom of the workbench, four supporting legs are installed at the bottom corners of the control cabinet, reinforcing ribs are installed between the four adjacent supporting legs, the installation heights of adjacent reinforcing ribs are different, and anti-slip pads are installed at the bottom of the supporting legs.

[0008] As a preferred embodiment of the present invention, a fixing rod is installed at the bottom of the fixed platform, a fixing plate is installed at the bottom of the fixing rod, the fixing plate is attached to the surface of the workbench, a locking bolt is screwed between the fixing plate and the workbench, the pressure plate is placed at the bottom of the fixed platform, and an inclined plate is installed between the pressure plate and the output end of the hydraulic push rod.

[0009] As a preferred embodiment of the present invention, a pair of positioning seats are fixedly installed on the side wall of the positioning frame, and the pair of positioning seats are rotatably connected to the corresponding extrusion arms. A pair of extrusion arms are mounted with U-shaped frames on their surfaces, and the U-shaped frames and the side walls of the extrusion arms form a strip groove, and the strip groove is a through groove. A sliding rod is slidably arranged inside the strip groove, and the sliding rod is connected to the synchronization plate.

[0010] As a preferred embodiment of the present invention, the electric push rod housing is installed with a positioning plate, and the positioning plate is attached to the workbench, bolts are installed between the workbench and the positioning plate, the output end of the electric push rod movably passes through the positioning frame, and the positioning frame is arched.

[0011] As a preferred embodiment of the present invention, a positioning groove is provided on the vertical plate, the positioning slider is slidably arranged on the positioning groove, a positioning rod is installed through the inside of the positioning groove, the positioning rod is slidably connected to the positioning slider, a positioning spring is sleeved on the positioning rod, one end of the positioning spring is clamped on the positioning slider, and the other end is clamped on the bottom of the positioning groove.

[0012] As a preferred embodiment of the present invention, a plug rod is installed on the side wall of the positioning slider, the plug rod and the push plate are movably penetrated, the end of the plug rod is placed in the inner cavity of the pressing roller, and a baffle is installed at the end of the plug rod, and the baffle is slidably connected to the inner cavity of the pressing roller.

[0013] As a preferred embodiment of the present invention, a vertical plate is installed at the bottom of the guide plate, a bracket is installed on the vertical plate, the bracket is installed on the side wall of the extrusion arm, a guide groove is opened on the surface of the guide plate, the guide groove and the guide plate have the same inclination angle, a protrusion is slidably arranged inside the guide groove, one end of the protrusion is connected to the side wall of the push plate, and the other end of the protrusion is connected to a limiting plate, and the diameter of the limiting plate is larger than the width of the guide groove.

[0014] As a preferred embodiment of the present invention, a roller is installed at one end of one side of the push rod, and a sliding roller is installed on the roller. A slide plate is provided on the connecting surface of the push rod and the fixed block, and the slide plate is slidably arranged in a sliding cavity provided on the inner wall of the extrusion arm. A tension spring is sleeved on the side wall of the push rod, one end of the tension spring and the side wall of the sliding cavity are connected to each other, and the other end of the tension spring and the side wall of the slide plate are connected to each other. A notch is provided on the extrusion arm, and the notch is communicated with the sliding cavity, and the swing arm is placed in the notch.

[0015] As a preferred embodiment of the present invention, the correction method of a subway rail correction equipment comprises the following steps: Step 1: Place the rail on the workbench surface and align the curved position of the rail surface with the pressing plate vertically; Step 2: Start the electric push rod, which drives the synchronous plate to slide, and the synchronous plate synchronously drives the squeezing arm connected to the positioning frame to rotate, and the squeezing arm slides toward the side wall of the rail to clamp the side wall of the rail. During the rotation of the squeezing arm, the vertical plate on the squeezing arm drives the pressing roller to rotate, so that the pressing roller rotates above the rail; Step 3: When the squeezing arm squeezes and clamps the rail, the push rod on the side wall of the squeezing arm squeezes the side wall of the rail, and the push rod slides inside the squeezing arm. The position of the fixed block at the end of the push rod changes synchronously, and the positioning slider is pulled down by the swing arm, and finally the pressing roller installed on the positioning slider moves toward the rail. Step 4: When the positioning slider moves downward, the push plate on the side wall of the positioning slider slides along the guide plate, and the pressing roller slides downward obliquely through the guide plate, and finally the pressing roller slides above the rail and squeezes and clamps the top of the rail, while the push rod clamps the side wall of the rail, and finally achieves the purpose of positioning the rail; Step 5: Start the hydraulic push rod, which drives the pressure plate to move downward. The pressure plate squeezes the raised part of the rail. During the downward movement of the pressure plate, it is necessary to ensure that the pressure plate is pressed down in stages and at a small distance. After pressing down, it needs to be left to stand for 30 minutes. Repeat the operation several times to ensure that the rail is corrected and meets the requirements.

[0016] Compared with the prior art, the present invention has the following beneficial effects: When the present invention clamps the rail, the synchronous plate is driven to slide by the electric push rod, and the synchronous plate synchronously drives the squeezing arm connected to the positioning frame to rotate, and the squeezing arm slides toward the side wall of the rail to clamp the side wall of the rail. During the rotation of the squeezing arm, the vertical plate on the squeezing arm drives the pressing roller to rotate, so that the pressing roller rotates above the rail. During the squeezing and clamping of the rail by the squeezing arm, the top rod of the side wall of the squeezing arm squeezes the side wall of the rail, and the top rod slides toward the inside of the squeezing arm. The position of the fixed block at the end of the top rod changes synchronously, and the positioning slide block is pulled downward by the swing arm, and finally the pressing roller installed on the positioning slide block moves toward the rail. During the process, the push plate of the side wall of the positioning slider slides along the guide plate, and the pressing roller slides downward obliquely through the guide plate, and finally the pressing roller slides above the rail and squeezes and clamps the top of the rail, and the push rod at this time clamps the side wall of the rail, and finally achieves the purpose of positioning the rail. At this time, the lateral clamping and the upper and lower clamping of the rail are synchronously achieved through a driving source, thereby improving the installation efficiency, and the movement process of the upper and lower clamping method is to rotate first, and then clamp obliquely to the upper surface of the rail, so that when disassembled later, the up and down movement of the rail will not contact the pressing roller, thereby protecting the clamp and the rail.

[0017] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached picture: Figure 1 It is a three-dimensional structural schematic diagram of a subway rail correction equipment; Figure 2 This is a schematic diagram of the front structure of a subway rail correction device; Figure 3 A schematic diagram of the local structure of a subway rail correction equipment Figure 1 ; Figure 4 A schematic diagram of the local structure of a subway rail correction equipment Figure 2 ; Figure 5 A schematic diagram of the local structure of a subway rail correction equipment Figure 3 ; Figure 6 A subway rail correction device Figure 5 Enlarged view of point A in the middle; Figure 7 A cross-sectional view of a pressing roller of a subway rail correction device; Figure 8 This is a cross-sectional view of the extrusion arm of a subway rail correction equipment.

[0019] In the figure: 1. Workbench; 11. Control cabinet; 111. Support legs; 112. Reinforcement ribs; 12. Fixed table; 121. Fixed rod; 122. Fixed plate; 13. Hydraulic push rod; 131. Pressing plate; 132. Inclined plate; 2. Positioning frame; 21. Electric push rod; 211. Positioning plate; 22. Extrusion arm; 221. U-shaped frame; 222. Strip groove; 223. Positioning seat; 23. Synchronous plate; 231. Sliding rod; 3. Vertical plate; 31. Positioning slide; 311. Positioning slider; 312. Positioning rod; 313. Positioning spring; 32. Push plate; 321. Pressing roller; 322. Inserting rod; 323. Baffle; 34. Bump; 341. Limiting plate; 342. Guide plate; 343. Guide groove; 344. Vertical plate; 345. Bracket; 4. push rod; 41. sliding roller; 411. roller; 42. slide plate; 421. tension spring; 422. fixed block; 423. sliding cavity; 43. swing arm; 431. notch; 5. Rails. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0021] Embodiment 1: like Figures 1 to 8 As shown, a subway rail correction device includes a workbench 1, four pairs of positioning frames 2, a vertical plate 3 and a mandrel 4.

[0022] A fixed platform 12 is installed on the workbench 1, a hydraulic push rod 13 is installed on the fixed platform 12, a pressing plate 131 is installed at the output end of the hydraulic push rod 13, and the bottom of the pressing plate 131 corresponds to the bending position of the rail 5 placed on the surface of the workbench 1; Four pairs of positioning frames 2 are symmetrically installed on the workbench 1, and the rail 5 is placed at the center of the positioning frame 2. A pair of extrusion arms 22 are rotatably installed on the side walls of each pair of positioning frames 2. The pair of extrusion arms 22 are V-shaped. Synchronous plates 23 are horizontally slidably arranged on the side walls of the pair of extrusion arms 22. The synchronous plates 23 correspond to the electric push rods 21 fixedly installed on the surface of the workbench 1. The vertical plate 3 is installed on the surface of the corresponding extrusion arm 22. A positioning slider 311 is slidably arranged on the surface of the vertical plate 3. A push plate 32 is slidably arranged at one end of the positioning slider 311, and a pressing roller 32 is rotatably installed on the push plate 32. 1. A guide plate 342 is provided on the side wall of the extrusion arm 22. The guide plate 342 is in an inclined state, and the height of the end of the guide plate 342 close to the side wall of the vertical plate 3 is higher than the height of the other end. The guide plate 342 is slidably connected with the push plate 32. The guide plate 342 is used to guide the moving trajectory of the push plate 32 and the pressing roller 321; the push rod 4 is slidably inserted into the corresponding extrusion arm 22, and the push rod 4 corresponds to the side wall of the rail 5. A fixed block 422 is installed at the end of the push rod 4, and a swing arm 43 is rotatably installed on the fixed block 422. The end of the swing arm 43 is rotatably connected to the side wall of the positioning slider 311.

[0023] The electric push rod 21 of the present invention can drive the synchronous plate 23 to slide, and the synchronous plate 23 synchronously drives the squeezing arm 22 connected to the positioning frame 2 to rotate, and the squeezing arm 22 slides toward the side wall of the rail 5 to clamp the side wall of the rail 5. During the rotation of the squeezing arm 22, the vertical plate 3 on the squeezing arm 22 drives the pressing roller 321 to rotate, so that the pressing roller 321 rotates to the top of the rail 5, and during the squeezing and clamping of the rail 5 by the squeezing arm 22, the top rod 4 on the side wall of the squeezing arm 22 is squeezed by the side wall of the rail 5, and the top rod 4 slides toward the inside of the squeezing arm 22, and the end of the top rod 4 The position of the fixed block 422 changes synchronously, and the positioning slider 311 is pulled downward by the swing arm 43, and finally the pressing roller 321 installed on the positioning slider 311 moves toward the rail 5. In the process of the positioning slider 311 moving downward, the push plate 32 on the side wall of the positioning slider 311 slides along the guide plate 342, and the pressing roller 321 is guided by the guide plate 342 to slide downward obliquely, and finally the pressing roller 321 slides above the rail 5 and squeezes and clamps the top of the rail 5. At this time, the push rod 4 clamps the side wall of the rail 5, and finally achieves the purpose of positioning the rail 5.

[0024] like Figures 1 to 8 As shown, in a specific implementation, a control cabinet 11 is fixedly installed at the bottom of the workbench 1, and four support legs 111 are installed at the bottom corners of the control cabinet 11. The support legs 111 provide a supporting effect, and reinforcing ribs 112 are installed between four adjacent support legs 111. The installation heights of adjacent reinforcing ribs 112 are different, so that the stress will not be concentrated at one point, thereby achieving a better supporting effect. Anti-slip pads are installed at the bottom of the support legs 111, and the anti-slip pads allow the device to remain stable even on an inclined ground.

[0025] like Figures 1 to 8 As shown, further, a fixing rod 121 is installed at the bottom of the fixing table 12, and a fixing plate 122 is installed at the bottom of the fixing rod 121. The fixing plate 122 is attached to the surface of the workbench 1, and a locking bolt is screwed between the fixing plate 122 and the workbench 1. The pressure plate 131 is placed at the bottom of the fixing table 12, and an inclined plate 132 is installed between the pressure plate 131 and the output end of the hydraulic push rod 13. The inclined plate 132 can improve the structural strength of the connection between the pressure plate 131 and the hydraulic push rod 13, so that the pressure plate 131 can be pressed down normally.

[0026] Embodiment 2: The difference between Example 1 and this Example is that: Figures 1 to 8 As shown, a pair of positioning seats 223 are fixedly installed on the side wall of the positioning frame 2, and the pair of positioning seats 223 are rotatably connected with the corresponding extrusion arms 22. The pair of extrusion arms 22 are mutually installed with U-shaped frames 221 on their surfaces. The U-shaped frame 221 and the side wall of the extrusion arm 22 form a strip groove 222, and the strip groove 222 is a through groove. A slide bar 231 is slidably arranged inside the strip groove 222, and the slide bar 231 is mutually connected with the synchronization plate 23. The synchronization plate 23 is driven to slide toward the side of the rail 5 by the electric push rod 21, and the slide bar 231 installed on the synchronization plate 23 can move synchronously at this time. The slide bar 231 slides on the strip groove 222 opened inside the U-shaped frame 221, and because the U-shaped frame 221 is installed on the extrusion arm 22, the extrusion arm 22 can rotate on the positioning seat 223 at this time, and finally the extrusion arm 22 squeezes the side wall of the rail 5 to clamp the side wall of the rail 5. The outer shell of the electric push rod 21 is installed with a positioning plate 211, and the positioning plate 211 is attached to the workbench 1, and bolts are installed between the workbench 1 and the positioning plate 211. The output end of the electric push rod 21 movably passes through the positioning frame 2, and the positioning frame 2 is arched. The outer shell of the electric push rod 21 is installed and positioned through the positioning plate 211.

[0027] like Figures 1 to 8 When the cam 312 is in the unlocking state, the locking cam 313 is in the unlocking state, and ...

[0028] Embodiment 3: The difference between Example 2 and this example is that: Figures 1 to 8As shown, an insert rod 322 is installed on the side wall of the positioning slider 311, and the insert rod 322 and the push plate 32 are movably penetrated. The end of the insert rod 322 is placed in the inner cavity of the pressing roller 321, and a baffle 323 is installed at the end of the insert rod 322, and the baffle 323 is slidably connected to the inner cavity of the pressing roller 321. The above structure ensures that the push plate 32 and the pressing roller 321 can slide horizontally on the surface of the positioning slider 311, which is convenient for the pressing roller 321 to slide above the rail 5 later.

[0029] like Figures 1 to 8 As shown, in a specific embodiment, a vertical plate 344 is installed at the bottom of the guide plate 342, and a bracket 345 is installed on the vertical plate 344. The bracket 345 is installed on the side wall of the extrusion arm 22. The vertical plate 344 and the bracket 345 are used for positioning. A guide groove 343 is provided on the surface of the guide plate 342. The guide groove 343 has the same inclination angle as the guide plate 342. A protrusion 34 is slidably arranged inside the guide groove 343. One end of the protrusion 34 is connected to the side wall of the push plate 32, and the other end of the protrusion 34 is connected to a limiting plate 341, and the diameter of the limiting plate 341 is larger than the width of the guide groove 343. The limiting plate 341 ensures that the protrusion 34 will not separate from the guide groove 343, and the protrusion 34 and the guide groove 343 are used to ensure that the guide plate 342 and the push plate 32 are always in sliding connection.

[0030] like Figures 1 to 8 As shown, further, a roller 411 is installed at the end of one side of the push rod 4, and a sliding roller 41 is installed on the roller 411. A slide plate 42 is provided on the connecting surface of the push rod 4 and the fixed block 422. The slide plate 42 is slidably arranged in a slide cavity 423 provided on the inner wall of the squeezing arm 22. A tension spring 421 is sleeved on the side wall of the push rod 4. One end of the tension spring 421 is connected to the side wall of the slide cavity 423, and the other end of the tension spring 421 is connected to the side wall of the slide plate 42. A notch 431 is provided on the squeezing arm 22, and the notch 431 is connected to the slide cavity. 423 are interconnected, and the swing arm 43 is placed in the notch 431. When the extrusion arm 22 is extruded toward the side wall of the rail 5, the push rod 4 on the side wall of the extrusion arm 22 is firstly extruded against the side wall of the rail 5. Since the push rod 4 is inserted into the extrusion arm 22, the extruded push rod 4 starts to slide toward the inside of the extrusion arm 22. The slide plate 42 on the extrusion arm 22 slides in the slide cavity 423. At this time, the slide plate 42 can stretch the tension spring 421, and the initial position of the push rod 4 can be guaranteed by the tension spring 421.

[0031] The present invention also discloses a correction method for subway rail correction equipment, the steps of which are as follows: Step 1: Place the rail 5 on the surface of the workbench 1, and make the curved position of the rail 5 vertically correspond to the pressing plate 131; Step 2: Start the electric push rod 21, which drives the synchronous plate 23 to slide. The synchronous plate 23 synchronously drives the squeezing arm 22 rotatably connected to the positioning frame 2 to rotate. The squeezing arm 22 slides toward the side wall of the rail 5 to clamp the side wall of the rail 5. During the rotation of the squeezing arm 22, the vertical plate 3 on the squeezing arm 22 drives the pressing roller 321 to rotate, so that the pressing roller 321 rotates to the top of the rail 5. Step 3: During the squeezing and clamping process of the squeezing arm 22 on the rail 5, the push rod 4 on the side wall of the squeezing arm 22 is squeezed by the side wall of the rail 5, and the push rod 4 slides into the inside of the squeezing arm 22. The position of the fixed block 422 at the end of the push rod 4 changes synchronously, and the positioning slider 311 is pulled downward by the swing arm 43, and finally the pressing roller 321 installed on the positioning slider 311 moves toward the rail 5; Step 4: When the positioning slider 311 moves downward, the push plate 32 on the side wall of the positioning slider 311 slides along the guide plate 342, and the pressing roller 321 is guided by the guide plate 342 to slide downward obliquely, and finally the pressing roller 321 slides above the rail 5, and squeezes and clamps the top of the rail 5, while the push rod 4 at this time clamps the side wall of the rail 5, and finally achieves the purpose of positioning the rail 5; Step 5: Start the hydraulic push rod 13, and drive the pressure plate 131 to move downward through the hydraulic push rod 13. The pressure plate 131 squeezes the protrusion of the rail 5. In the process of the pressure plate 131 moving downward, it is necessary to ensure that the pressure plate 131 is pressed down in stages and at a small distance. After the pressing is completed, it needs to be left to stand for thirty minutes. Repeat the operation multiple times to ensure that the rail 5 is corrected and meets the requirements.

[0032] The implementation principle of a subway rail correction device and method of the present invention is as follows: The operator first places the rail 5 on the surface of the workbench 1 , and aligns the bent position of the rail 5 with the pressing plate 131 vertically.

[0033] Then the operator needs to start the electric push rod 21, which drives the synchronous plate 23 to slide toward the side of the rail 5. At this time, the slide bar 231 installed on the synchronous plate 23 can move synchronously. The slide bar 231 slides on the strip groove 222 opened inside the U-shaped frame 221. Since the U-shaped frame 221 is installed on the squeezing arm 22, the squeezing arm 22 can rotate on the positioning seat 223. Finally, the squeezing arm 22 squeezes the side wall of the rail 5 to clamp the side wall of the rail 5. In the process of rotation of the squeezing arm 22, the vertical plate 3 on the squeezing arm 22 drives the pressing roller 321 to rotate, so that the pressing roller 321 rotates to the top of the rail 5.

[0034] When the squeezing arm 22 squeezes and clamps the rail 5, the push rod 4 on the side wall of the squeezing arm 22 first squeezes the side wall of the rail 5. Since the push rod 4 is inserted into the squeezing arm 22, the squeezed push rod 4 starts to slide into the squeezing arm 22. The slide plate 42 on the squeezing arm 22 slides in the slide cavity 423. At this time, the slide plate 42 can stretch the tension spring 421, and the tension spring 421 can ensure the initial position of the push rod 4. During the movement of the push rod 4, the fixed block 422 on the side wall of the push rod 4 slides synchronously, and the swing arm 43 connected to the side wall rotation is driven by the fixed block 422 to slide in the notch 431. The end of the swing arm 43 is connected to the positioning slide block 311, so the positioning slide block 311 is pulled to slide downward along the positioning slot 31, and the positioning slide block 311 can slide along the positioning rod 312 at the same time, and squeeze the positioning spring 313 on the outer wall of the positioning rod 312, and the positioning spring 313 is convenient for the later reset operation. When the positioning slider 311 slides, the push plate 32 and the pressing roller 321 on the side wall of the positioning slider 311 slide toward the upper surface of the rail 5.

[0035] During the downward movement of the positioning slider 311, the push plate 32 on the side wall of the positioning slider 311 has a force to move downward synchronously, and the protrusion 34 on the side wall of the push plate 32 slides along the guide groove 343 of the guide plate 342 at this time. Through the guiding effect of the guide groove 343, the pressing roller 321 at this time tilts and slides downward, and finally the pressing roller 321 slides above the rail 5 and squeezes and clamps the top of the rail 5. When the pressing roller 321 stops squeezing, the top rod 4 stops clamping the side wall of the rail 5 at this time, which finally achieves the purpose of positioning the rail 5. The purpose of clamping is achieved through the joint action of the two.

[0036] Then the operator needs to start the hydraulic push rod 13 to make corrections. The hydraulic push rod 13 drives the pressure plate 131 to move downward. The pressure plate 131 squeezes the protrusion of the rail 5, and in the process of the pressure plate 131 moving downward, it is necessary to ensure that the pressure plate 131 is pressed down in stages and at a small distance. After pressing down, it needs to be left to stand for thirty minutes to make the stress distribution uniform. Repeat the pressing operation for multiple times to finally correct the rail 5.

Claims

1. A subway rail correction device, characterized in that: include: A workbench (1), wherein a fixed platform (12) is mounted on the workbench (1), a hydraulic push rod (13) is mounted on the fixed platform (12), a pressing plate (131) is mounted on the output end of the hydraulic push rod (13), and the bottom of the pressing plate (131) corresponds to a bending position of a steel rail (5) placed on the surface of the workbench (1); Four pairs of positioning frames (2), the four pairs of positioning frames (2) are symmetrically mounted on the workbench (1), and the steel rails (5) are placed at the center of the positioning frames (2), and a pair of extrusion arms (22) are rotatably mounted on the side walls of each pair of positioning frames (2), the pair of extrusion arms (22) are in a V shape, and a synchronization plate (23) is horizontally slidably arranged on the side walls of the pair of extrusion arms (22), and the synchronization plate (23) corresponds to an electric push rod (21) fixedly mounted on the surface of the workbench (1); A vertical plate (3), the vertical plate (3) being mounted on the surface of the corresponding extrusion arm (22), a positioning slider (311) being slidably disposed on the surface of the vertical plate (3), a push plate (32) being slidably disposed at one end of the positioning slider (311), and a pressing roller (321) being rotatably mounted on the push plate (32), a guide plate (342) being disposed on the side wall of the extrusion arm (22), the guide plate (342) being in an inclined state, and a height of an end of the guide plate (342) close to the side wall of the vertical plate (3) being higher than a height of the other end, and the guide plate (342) being slidably connected to the push plate (32), and the guide plate (342) being used to guide the moving tracks of the push plate (32) and the pressing roller (321); A push rod (4), the push rod (4) is slidably inserted into the corresponding extrusion arm (22), and the push rod (4) corresponds to the side wall of the rail (5), a fixed block (422) is installed at the end of the push rod (4), a swing arm (43) is rotatably installed on the fixed block (422), and the end of the swing arm (43) is rotatably connected to the side wall of the positioning slide block (311).

2. The subway rail correction equipment according to claim 1, characterized in that: A control cabinet (11) is fixedly mounted on the bottom of the workbench (1), four support legs (111) are mounted at the bottom corners of the control cabinet (11), reinforcing ribs (112) are mounted between the four adjacent support legs (111), the installation heights of adjacent reinforcing ribs (112) are different, and anti-slip pads are mounted on the bottoms of the support legs (111).

3. The subway rail correction equipment according to claim 1, characterized in that: A fixing rod (121) is installed at the bottom of the fixing platform (12), a fixing plate (122) is installed at the bottom of the fixing rod (121), the fixing plate (122) is attached to the surface of the workbench (1), a locking bolt is screwed between the fixing plate (122) and the workbench (1), the pressing plate (131) is placed at the bottom of the fixing platform (12), and an inclined plate (132) is installed between the pressing plate (131) and the output end of the hydraulic push rod (13).

4. The subway rail correction equipment according to claim 1, characterized in that: A pair of positioning seats (223) are fixedly mounted on the side wall of the positioning frame (2); the pair of positioning seats (223) are rotatably connected to the corresponding extrusion arms (22); a pair of extrusion arms (22) are mounted with U-shaped frames (221) on their surfaces; the U-shaped frames (221) and the side walls of the extrusion arms (22) form a strip groove (222); the strip groove (222) is a through groove; a slide rod (231) is slidably arranged inside the strip groove (222); the slide rod (231) is mutually connected to the synchronization plate (23).

5. The subway rail correction equipment according to claim 1, characterized in that: A positioning plate (211) is installed on the housing of the electric push rod (21), and the positioning plate (211) is attached to the workbench (1). Bolts are installed between the workbench (1) and the positioning plate (211). The output end of the electric push rod (21) movably passes through the positioning frame (2), and the positioning frame (2) is arched.

6. The subway rail correction equipment according to claim 1, characterized in that: The vertical plate (3) is provided with a positioning slot (31), the positioning slider (311) is slidably arranged on the positioning slot (31), a positioning rod (312) is installed inside the positioning slot (31), the positioning rod (312) is slidably connected to the positioning slider (311), a positioning spring (313) is sleeved on the positioning rod (312), one end of the positioning spring (313) is clamped on the positioning slider (311), and the other end is clamped on the bottom of the positioning slot (31).

7. The subway rail correction equipment according to claim 1, characterized in that: An insertion rod (322) is installed on the side wall of the positioning slider (311), the insertion rod (322) and the push plate (32) are movably interpenetrating, the end of the insertion rod (322) is placed in the inner cavity of the pressing roller (321), and a baffle (323) is installed at the end of the insertion rod (322), and the baffle (323) is slidably connected to the inner cavity of the pressing roller (321).

8. The subway rail correction equipment according to claim 1, characterized in that: A vertical plate (344) is installed at the bottom of the guide plate (342), a bracket (345) is installed on the vertical plate (344), and the bracket (345) is installed on the side wall of the extrusion arm (22). A guide groove (343) is opened on the surface of the guide plate (342), and the guide groove (343) and the guide plate (342) have the same inclination angle. A protrusion (34) is slidably arranged inside the guide groove (343), one end of the protrusion (34) is connected to the side wall of the push plate (32), and the other end of the protrusion (34) is connected to a limiting plate (341), and the diameter of the limiting plate (341) is greater than the width of the guide groove (343).

9. The subway rail correction equipment according to claim 1, characterized in that: A roller (411) is installed at one end of one side of the push rod (4), and a sliding roller (41) is installed on the roller (411). A sliding plate (42) is provided on the connecting surface of the push rod (4) and the fixed block (422). The sliding plate (42) is slidably arranged in a sliding cavity (423) provided on the inner wall of the squeezing arm (22). A tension spring (421) is sleeved on the side wall of the push rod (4). One end of the tension spring (421) and the side wall of the sliding cavity (423) are mutually connected. The other end of the tension spring (421) and the side wall of the sliding plate (42) are mutually connected. A notch (431) is provided on the squeezing arm (22). The notch (431) and the sliding cavity (423) are mutually connected. The swing arm (43) is placed in the notch (431).

10. A method for correcting subway rails, characterized in that: The subway rail correction device according to any one of claims 1 to 9 is applied to the correction method of the subway rail correction device, and the steps are as follows: Step 1: placing the steel rail (5) on the surface of the workbench (1), and aligning the curved position of the surface of the steel rail (5) with the pressing plate (131) vertically; Step 2: Start the electric push rod (21), the electric push rod (21) drives the synchronous plate (23) to slide, the synchronous plate (23) synchronously drives the squeezing arm (22) connected to the positioning frame (2) to rotate, the squeezing arm (22) slides toward the side wall of the rail (5), and clamps the side wall of the rail (5). During the rotation of the squeezing arm (22), the vertical plate (3) on the squeezing arm (22) drives the pressing roller (321) to rotate, so that the pressing roller (321) rotates to the top of the rail (5); Step 3: During the process of squeezing and clamping the steel rail (5) by the squeezing arm (22), the push rod (4) on the side wall of the squeezing arm (22) and the side wall of the steel rail (5) are squeezed, the push rod (4) slides into the inside of the squeezing arm (22), the position of the fixed block (422) at the end of the push rod (4) changes synchronously, and the positioning slider (311) is pulled downward by the swing arm (43), and finally the pressing roller (321) installed on the positioning slider (311) moves toward the steel rail (5); Step 4: During the downward movement of the positioning slider (311), the push plate (32) on the side wall of the positioning slider (311) slides along the guide plate (342), and the pressing roller (321) is guided by the guide plate (342) to slide obliquely downward, and finally the pressing roller (321) slides above the steel rail (5) and squeezes and clamps the top of the steel rail (5), while the push rod (4) clamps the side wall of the steel rail (5), and finally achieves the purpose of positioning the steel rail (5); Step 5: Start the hydraulic push rod (13), and drive the pressing plate (131) to move downward through the hydraulic push rod (13), so that the pressing plate (131) presses the protruding part of the rail (5), and in the process of the pressing plate (131) moving downward, it is necessary to ensure that the pressing plate (131) is pressed downward in stages and at a small distance. After the pressing is completed, it is necessary to leave it to stand for thirty minutes, and repeat the operation multiple times, so as to ensure that the rail (5) is corrected and the rail (5) meets the requirements.

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