A subway rail correction device and method

Abstract

The present invention relates to the technical field of rail correction and processing, and discloses a subway rail correction device and method, including a workbench, four positioning frames, a vertical plate and a top rod. When clamping the rail, the present invention drives the synchronous plate to slide through an electric push rod. The synchronous plate synchronously pushes the extrusion arm rotatably connected to the positioning frame to rotate. The extrusion arm slides towards the side wall of the rail to clamp the side wall of the rail. During the process of the extrusion arm squeezing and clamping the rail, the top rod on the side wall of the extrusion arm squeezes against the side wall of the rail, and the top rod slides into the interior of the extrusion arm. Moreover, the swing arm is used to pull the positioning slider downward, and finally the pressing roller installed on the positioning slider moves towards the rail. During the downward movement of the positioning slider, the push plate on the side wall of the positioning slider slides along the guide plate, and finally the pressing roller slides above the rail and squeezes and clamps the top of the rail. At this time, the top rod clamps the side wall of the rail, ultimately achieving the purpose of positioning the rail and improving the correction efficiency.

Description

Technical Field

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

[0002] With the continuous expansion of the urban subway network, the safety and stability of subway operation are becoming increasingly important. As the basic support structure for subway train operation, rails are extremely prone to deformation under the long-term high-frequency heavy pressure, vibration of trains, and the influence of complex geological environments. If this problem is not solved in time, it will not only exacerbate the wear of train wheels and rails, shorten their service life, but also may lead to serious safety accidents such as bumps, shakes, and even derailment during train operation, threatening the lives and property safety of passengers.

[0003] Many problems have emerged in the actual operation of traditional correction devices. Existing correction devices often clamp the front and back and the top and bottom of the rail separately, requiring two clamps, which makes the overall operation complicated. Moreover, the traditional top-and-bottom clamping method affects the loading and unloading of the rail, and during the loading and unloading process, the rail and the fixture may collide, resulting in damage to the fixture or the rail, causing unnecessary losses.

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

[0005] To solve the technical problems that existing correction devices often clamp the front and back and the top and bottom of the rail separately, requiring two clamps, which makes the overall operation complicated, and the traditional top-and-bottom clamping method affects the loading and unloading of the rail, and during the loading and unloading process, the rail and the fixture may collide, resulting in damage to the fixture or the rail, causing unnecessary losses, the basic concept of the technical solution adopted by the present invention is:

[0006] A subway rail correction device includes a workbench, four positioning frames, a vertical plate, and a top rod.

[0007] A fixed table is installed on the workbench, a hydraulic push rod is installed on the fixed table, a pressing plate is installed at the output end of the hydraulic push rod, and the bottom of the pressing plate corresponds to the bent position of the rail placed on the surface of the workbench;

[0008] The four positioning frames are symmetrically installed on the workbench respectively, and the rail is placed at the center position of the positioning frame. A pair of extrusion arms are rotatably installed on the side wall of each positioning frame. The pair of extrusion arms are in a V shape, and a synchronous plate is horizontally slidably arranged on the side walls of the pair of extrusion arms. The synchronous plate corresponds to an electric push rod fixedly installed on the surface of the workbench;

[0009] The vertical plate is installed on the surface of the corresponding extrusion arm. A positioning slider is slidably arranged on the surface of the vertical plate. One end of the positioning slider is slidably provided with a push plate, and a pressing roller is rotatably installed on the push plate. A guiding plate is arranged on the side wall of the extrusion arm. The guiding plate is in an inclined state, and the height of the end of the guiding plate close to the side wall of the vertical plate is higher than that of the other end. The guiding plate is slidably connected with the push plate, and the guiding plate is used to guide the moving trajectories of the push plate and the pressing roller.

[0010] The ejector rod is slidably inserted into the corresponding extrusion arm, and the ejector rod corresponds to the side wall of the rail. A fixed block is installed at the end of the ejector 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.

[0011] As a preferred embodiment of the present invention, a control cabinet is fixedly installed at the bottom of the workbench. Four support legs are installed at the bottom corners of the control cabinet. Reinforcing ribs are installed between four adjacent support legs, and the installation heights of adjacent reinforcing ribs are different. Anti-slip pads are installed at the bottoms of the support legs.

[0012] As a preferred embodiment of the present invention, a fixing rod is installed at the bottom of the fixing table, and a fixing plate is installed at the bottom of the fixing rod. The fixing plate is attached to the surface of the workbench, and locking bolts are screwed between the fixing plate and the workbench. The pressing plate is placed at the bottom of the fixing table, and an inclined plate is installed between the pressing plate and the output end of the hydraulic push rod.

[0013] As a preferred embodiment of the present invention, a pair of positioning seats are fixedly installed on the side wall of the positioning frame. The pair of positioning seats are rotatably connected to the corresponding extrusion arms. U-shaped frames are installed on the opposite surfaces of the pair of extrusion arms. A strip-shaped groove is formed between the U-shaped frame and the side wall of the extrusion arm. The strip-shaped groove is a through groove, and a sliding rod is slidably arranged inside the strip-shaped groove. The sliding rod is connected with the synchronous plate.

[0014] As a preferred embodiment of the present invention, a positioning plate is installed on the housing of the electric push rod, 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 penetrates through the positioning frame, and the positioning frame is in an arch shape.

[0015] As a preferred embodiment of the present invention, a positioning sliding groove is formed on the vertical plate. The positioning slider is slidably arranged on the positioning sliding groove. A positioning rod is installed through the positioning sliding groove. The positioning rod is slidably connected with 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 sliding groove.

[0016] As a preferred embodiment of the present invention, a plug rod is installed on the side wall of the positioning slider. The plug rod penetrates through the push plate movably. 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. The baffle is slidably connected to the inner cavity of the pressing roller.

[0017] 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, and the bracket is installed on the side wall of the extrusion arm. A guide groove is formed on the surface of the guide plate, and the inclination angle of the guide groove is the same as that of the guide plate. A convex block is slidably arranged inside the guide groove. One end of the convex block is connected to the side wall of the push plate, and the other end of the convex block is connected to a limit plate, and the diameter of the limit plate is larger than the width of the guide groove.

[0018] As a preferred embodiment of the present invention, a roller is installed at the end of one side of the ejector rod, and a sliding roller is installed on the roller. A sliding plate is arranged on the connecting surface of the ejector rod and the fixed block. The sliding plate is slidably arranged in a sliding cavity formed on the inner wall of the extrusion arm. A tension spring is sleeved on the side wall of the ejector rod. One end of the tension spring is connected to the side wall of the sliding cavity, and the other end of the tension spring is connected to the side wall of the sliding plate. A notch is formed on the extrusion arm, and the notch communicates with the sliding cavity. The swing arm is placed in the notch.

[0019] As a preferred embodiment of the present invention, a correction method for a subway rail correction device is as follows:

[0020] Step 1: Place the rail on the surface of the workbench, and vertically align the bent position on the surface of the rail with the pressing plate.

[0021] Step 2: Start the electric push rod. The electric push rod drives the synchronous plate to slide. The synchronous plate synchronously pushes the extrusion arm rotatably connected to the positioning frame to rotate. The extrusion arm slides towards the side wall of the rail to clamp the side wall of the rail. During the rotation of the extrusion arm, the vertical plate on the extrusion arm drives the pressing roller to rotate, so that the pressing roller rotates above the rail.

[0022] Step 3: During the process of the extrusion arm squeezing and clamping the rail, the ejector rod on the side wall of the extrusion arm squeezes against the side wall of the rail. The ejector rod slides towards the inside of the extrusion arm, and the position of the fixed block at the end of the ejector 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 towards the rail.

[0023] Step 4: During the process of the positioning slider moving down, the push plate on the side wall of the positioning slider slides along the guide plate. The pressing roller is guided by the guide plate to slide obliquely downwards. Finally, the pressing roller slides above the rail and squeezes and clamps the top of the rail. At this time, the ejector rod clamps the side wall of the rail, and finally the purpose of positioning the rail is achieved.

[0024] Step 5: Start the hydraulic push rod. Drive the pressing plate to move downward through the hydraulic push rod. The pressing plate squeezes the raised part of the rail. During the downward movement of the pressing plate, it is necessary to ensure that the pressing plate presses down in small distances in stages. After the pressing is completed, it needs to be left static for thirty minutes. Repeat the operation multiple times to ensure that the rail is corrected and meets the requirements.

[0025] The present invention has the following beneficial effects compared with the prior art:

[0026] When the present invention clamps the rail, the electric push rod drives the synchronous plate to slide. The synchronous plate synchronously pushes the extrusion arm rotatably connected to the positioning frame to rotate. The extrusion arm slides towards the side wall of the rail to clamp the side wall of the rail. During the rotation of the extrusion arm, the vertical plate on the extrusion arm drives the pressing roller to rotate, so that the pressing roller rotates above the rail. During the process of the extrusion arm squeezing and clamping the rail, the ejector rod on the side wall of the extrusion arm squeezes the side wall of the rail, and the ejector rod slides towards the inside of the extrusion arm. The position of the fixed block at the end of the ejector rod changes synchronously. And the swing arm pulls the positioning slider to move downward. Finally, the pressing roller installed on the positioning slider moves towards the rail. During the downward movement of the positioning slider, the push plate on the side wall of the positioning slider slides along the guide plate. Through the guide plate, the pressing roller slides obliquely downward. Finally, the pressing roller slides above the rail and squeezes and clamps the top of the rail. And at this time, the ejector rod clamps the side wall of the rail. Finally, the purpose of positioning the rail is achieved. At this time, the lateral clamping and the up-and-down clamping of the rail are synchronously realized through a driving source, which can improve the installation efficiency. And the movement process of the up-and-down clamping method is to first perform a rotational movement, and then clamp obliquely towards the upper surface of the rail. In this way, when disassembling later, the up-and-down movement of the rail will not contact the pressing roller, which plays the role of protecting the fixture and the rail.

[0027] The following further describes in detail the specific implementation manners of the present invention with reference to the drawings. Brief Description of the Drawings

[0028] In the drawings:

[0029] Figure 1 is a three-dimensional structural schematic diagram of a subway rail correction device;

[0030] Figure 2 is a front structural schematic diagram of a subway rail correction device;

[0031] Figure 3 is a partial structural schematic of a subway rail correction device Figure 1 ;

[0032] Figure 4 is a partial structural schematic of a subway rail correction device Figure 2 ;

[0033] Figure 5Schematic diagram of a partial structure of a subway rail correction device Figure 3 ;

[0034] Figure 6 For a subway rail correction device Figure 5 Enlarged view of part A in

[0035] Figure 7 Cross-sectional view of the pressing roller of a subway rail correction device;

[0036] Figure 8 Cross-sectional view of the extrusion arm of a subway rail correction device.

[0037] In the figure:

[0038] 1. Workbench; 11. Control cabinet; 111. Support leg; 112. Reinforcing rib; 12. Fixed table; 121. Fixed rod; 122. Fixed plate; 13. Hydraulic push rod; 131. Pressing plate; 132. Inclined plate;

[0039] 2. Positioning frame; 21. Electric push rod; 211. Positioning plate; 22. Extrusion arm; 221. U-shaped frame; 222. Strip-shaped groove; 223. Positioning seat; 23. Synchronous plate; 231. Slide bar;

[0040] 3. Vertical plate; 31. Positioning chute; 311. Positioning slider; 312. Positioning rod; 313. Positioning spring; 32. Pushing plate; 321. Pressing roller; 322. Insert rod; 323. Baffle; 34. Convex block; 341. Limiting plate; 342. Guide plate; 343. Guide groove; 344. Vertical plate; 345. Bracket;

[0041] 4. Jack rod; 41. Slide roller; 411. Roller; 42. Slide plate; 421. Tensile spring; 422. Fixed block; 423. Slide cavity; 43. Swing arm; 431. Notch;

[0042] 5. Rail. Specific implementation mode

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0044] Embodiment 1:

[0045] As Figures 1 to 8 shown, a subway rail correction device includes a workbench 1, four positioning frames 2, a vertical plate 3, and a jack rod 4.

[0046] A fixed table 12 is installed on the workbench 1, a hydraulic push rod 13 is installed on the fixed table 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 steel rail 5 placed on the surface of the workbench 1;

[0047] Four positioning frames 2 are symmetrically installed on the workbench 1 respectively, and the steel rail 5 is placed at the center position of the positioning frames 2. A pair of pressing arms 22 are rotatably installed on the side walls of each pair of positioning frames 2. The pair of pressing arms 22 are in a V shape. A synchronous plate 23 is horizontally slidably arranged on the side walls of the pair of pressing arms 22, and the synchronous plate 23 corresponds to an electric push rod 21 fixedly installed on the surface of the workbench 1; A vertical plate 3 is installed on the surface of the corresponding pressing arm 22. A positioning slider 311 is slidably arranged on the surface of the vertical plate 3. One end of the positioning slider 311 is slidably provided with a push plate 32, and a pressing roller 321 is rotatably installed on the push plate 32. A guide plate 342 is arranged on the side wall of the pressing 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 that of the other end, and the guide plate 342 is slidably connected with the push plate 32. The guide plate 342 is used to guide the moving tracks of the push plate 32 and the pressing roller 321; A top rod 4 is slidably inserted into the corresponding pressing arm 22, and the top rod 4 corresponds to the side wall of the steel rail 5. A fixed block 422 is installed at the end of the top 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 with the side wall of the positioning slider 311.

[0048] The electric push rod 21 of the present invention can drive the synchronous plate 23 to slide. The synchronous plate 23 synchronously pushes the pressing arm 22 rotatably connected with the positioning frame 2 to rotate. The pressing arm 22 slides towards the side wall of the steel rail 5 to clamp the side wall of the steel rail 5. During the rotation of the pressing arm 22, the vertical plate 3 on the pressing arm 22 drives the pressing roller 321 to rotate, so that the pressing roller 321 rotates above the steel rail 5. And during the process of the pressing arm 22 squeezing and clamping the steel rail 5, the top rod 4 on the side wall of the pressing arm 22 squeezes with the side wall of the steel rail 5. The top rod 4 slides into the pressing arm 22. The position of the fixed block 422 at the end of the top rod 4 changes synchronously, and the positioning slider 311 is pulled down by the swing arm 43. Finally, the pressing roller 321 installed on the positioning slider 311 moves towards the steel rail 5. 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. The guide plate 342 guides the pressing roller 321 to slide obliquely downwards. Finally, the pressing roller 321 slides above the steel rail 5 and squeezes and clamps the top of the steel rail 5. And at this time, the top rod 4 clamps the side wall of the steel rail 5, and finally the purpose of positioning the steel rail 5 is achieved.

[0049] Such as Figures 1 to 8As shown in the figure, in the specific implementation, a control cabinet 11 is fixedly installed at the bottom of the workbench 1. Four support legs 111 are installed at the bottom corners of the control cabinet 11, which play a supporting role through the support legs 111. Reinforcing ribs 112 are installed between every four adjacent support legs 111, and the installation heights of adjacent reinforcing ribs 112 are different, so that the stress will not concentrate at one point, resulting in a better supporting effect. Anti-slip pads are installed at the bottoms of the support legs 111, so that the device can remain stable even on an inclined ground through the anti-slip pads.

[0050] As Figures 1 to 8 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 fits on the surface of the workbench 1, and locking bolts are screwed between the fixing plate 122 and the workbench 1. A pressing plate 131 is placed at the bottom of the fixing table 12, and an inclined plate 132 is installed between the pressing plate 131 and the output end of the hydraulic push rod 13. The inclined plate 132 can improve the structural strength at the connection between the pressing plate 131 and the hydraulic push rod 13, so that the pressing plate 131 can press down normally.

[0051] Example 2:

[0052] Based on Example 1, the difference from this example is that as Figures 1 to 8 shown, a pair of positioning seats 223 are fixedly installed on the side wall of the positioning frame 2. The pair of positioning seats 223 are rotatably connected to the corresponding pressing arms 22. U-shaped frames 221 are installed on the opposite surfaces of the pair of pressing arms 22. A strip-shaped groove 222 is formed between the U-shaped frames 221 and the side walls of the pressing arms 22. The strip-shaped groove 222 is a through groove, and a sliding rod 231 is slidably arranged inside the strip-shaped groove 222. The sliding rod 231 is connected to the synchronous plate 23. The electric push rod 21 drives the synchronous plate 23 to slide towards the side of the steel rail 5. At this time, the sliding rod 231 installed on the synchronous plate 23 can move synchronously. The sliding rod 231 slides on the strip-shaped groove 222 opened inside the U-shaped frame 221 at this time. And because the U-shaped frame 221 is installed on the pressing arm 22, the pressing arm 22 can rotate on the positioning seat 223 at this time. Finally, the pressing arm 22 presses against the side wall of the steel rail 5 to clamp the side wall of the steel rail 5. A positioning plate 211 is installed on the outer shell of the electric push rod 21, and the positioning plate 211 fits on 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 penetrates through the positioning frame 2. The positioning frame 2 is arched, and the outer shell of the electric push rod 21 is installed and positioned through the positioning plate 211.

[0053] As Figures 1 to 8As shown in the figure, further, a positioning chute 31 is formed on the vertical plate 3. A positioning slider 311 is slidably arranged on the positioning chute 31. A positioning rod 312 is installed through the inside of the positioning chute 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 chute 31. When the positioning slider 311 slides downward along the positioning chute 31, and at the same time, the positioning slider 311 can slide along the positioning rod 312, and the positioning spring 313 on the outer wall of the positioning rod 312 is compressed. The positioning spring 313 facilitates the later reset operation.

[0054] Embodiment 3:

[0055] Based on Embodiment 2, the difference from this embodiment is that as Figures 1 to 8 shown in the figure, a plug rod 322 is installed on the side wall of the positioning slider 311. The plug rod 322 is movably penetrated through the push plate 32. The end of the plug rod 322 is placed in the inner cavity of the pressing roller 321, and a baffle 323 is installed at the end of the plug rod 322. The baffle 323 is slidably connected to the inner cavity of the pressing roller 321. Through the above structure, it is ensured that the push plate 32 and the pressing roller 321 can slide horizontally on the surface of the positioning slider 311, facilitating the later sliding of the pressing roller 321 above the steel rail 5.

[0056] As Figures 1 to 8 shown in the figure, in the specific implementation manner, a vertical plate 344 is installed at the bottom of the guide plate 342. 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 purposes. A guide groove 343 is formed on the surface of the guide plate 342. The inclination angle of the guide groove 343 is the same as that of the guide plate 342. A convex block 34 is slidably arranged inside the guide groove 343. One end of the convex block 34 is connected to the side wall of the push plate 32. The other end of the convex block 34 is connected to a limiting plate 341. The diameter of the limiting plate 341 is larger than the width of the guide groove 343. The limiting plate 341 ensures that the convex block 34 will not be separated from the guide groove 343. The convex block 34 and the guide groove 343 are used to ensure that the guide plate 342 and the push plate 32 are always slidably connected.

[0057] As Figures 1 to 8As shown in the figure, further, a roller 411 is installed at one end of the side of the ejector rod 4, and a sliding roller 41 is installed on the roller 411. A sliding plate 42 is provided on the connecting surface between the ejector rod 4 and the fixed block 422. The sliding plate 42 is slidably arranged in a sliding cavity 423 opened on the inner wall of the extrusion arm 22. A tension spring 421 is sleeved on the side wall of the ejector rod 4. One end of the tension spring 421 is connected to the side wall of the sliding cavity 423, and the other end of the tension spring 421 is connected to the side wall of the sliding plate 42. A notch 431 is opened on the extrusion arm 22, and the notch 431 communicates with the sliding cavity 423. The swing arm 43 is placed in the notch 431. When the extrusion arm 22 extrudes against the side wall of the rail 5, the ejector rod 4 on the side wall of the extrusion arm 22 first extrudes against the side wall of the rail 5. Since the ejector rod 4 is inserted inside the extrusion arm 22, the ejector rod 4 being extruded at this time starts to slide inside the extrusion arm 22. The sliding plate 42 on the extrusion arm 22 slides inside the sliding cavity 423 at this time. At this time, the sliding plate 42 can stretch the tension spring 421, and the initial position of the ejector rod 4 can be ensured through the tension spring 421.

[0058] The present invention also discloses a correction method for a subway rail correction device, and the steps are as follows:

[0059] Step 1: Place the rail 5 on the surface of the workbench 1, and vertically align the bent position on the surface of the rail 5 with the pressing plate 131.

[0060] 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 pushes the extrusion arm 22 rotatably connected to the positioning frame 2 to rotate. The extrusion arm 22 slides towards the side wall of the rail 5 to clamp the side wall of the rail 5. During the rotation of the extrusion arm 22, the vertical plate 3 on the extrusion arm 22 drives the pressing roller 321 to rotate, so that the pressing roller 321 rotates above the rail 5.

[0061] Step 3: During the process of the extrusion arm 22 extruding and clamping the rail 5, the ejector rod 4 on the side wall of the extrusion arm 22 extrudes against the side wall of the rail 5. The ejector rod 4 slides inside the extrusion arm 22. The position of the fixed block 422 at the end of the ejector rod 4 changes synchronously, and the positioning slider 311 is pulled down by the swing arm 43. Finally, the pressing roller 321 installed on the positioning slider 311 moves towards the rail 5.

[0062] Step 4: During the process of the positioning slider 311 moving down, the push plate 32 on the side wall of the positioning slider 311 slides along the guide plate 342. The pressing roller 321 is guided by the guide plate 342 to slide obliquely downward. Finally, the pressing roller 321 slides above the rail 5 and extrudes and clamps the top of the rail 5. At this time, the ejector rod 4 clamps the side wall of the rail 5, and finally the purpose of positioning the rail 5 is achieved.

[0063] Step 5: Start the hydraulic push rod 13. Drive the pressing plate 131 to move downward through the hydraulic push rod 13. The pressing plate 131 squeezes the convex part of the steel rail 5. During the downward movement of the pressing plate 131, it is necessary to ensure that the pressing plate 131 presses down in small distances in stages. After the pressing is completed, it needs to be left standing for thirty minutes. Repeat the operation multiple times to ensure that the steel rail 5 is straightened and meets the requirements.

[0064] The implementation principle of a subway steel rail straightening device and method of the present invention is as follows:

[0065] The operator first places the steel rail 5 on the surface of the workbench 1, and vertically aligns the bent position on the surface of the steel rail 5 with the pressing plate 131.

[0066] Then the operator needs to start the electric push rod 21. Drive the synchronous plate 23 to slide towards one side of the steel rail 5 through the electric push rod 21. At this time, the slide rod 231 installed on the synchronous plate 23 can move synchronously. The slide rod 231 slides on the strip-shaped groove 222 opened inside the U-shaped frame 221 at this time. 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. Finally, the extrusion arm 22 squeezes the side wall of the steel rail 5, clamps the side wall of the steel rail 5, and during the rotation of the extrusion arm 22, the vertical plate 3 on the extrusion arm 22 drives the pressing roller 321 to rotate, so that the pressing roller 321 rotates above the steel rail 5.

[0067] When the extrusion arm 22 squeezes and clamps the steel rail 5, the ejector rod 4 on the side wall of the extrusion arm 22 first squeezes the side wall of the steel rail 5. Since the ejector rod 4 is inserted inside the extrusion arm 22, the squeezed ejector rod 4 starts to slide inside the extrusion arm 22 at this time. The slide plate 42 on the extrusion arm 22 slides inside the slide cavity 423 at this time. At this time, the slide plate 42 can stretch the tension spring 421. Through the tension spring 421, the initial position of the ejector rod 4 can be ensured. During the movement of the ejector rod 4, the fixed block 422 on the side wall of the ejector rod 4 slides synchronously. Drive the swing arm 43 rotatably connected to the side wall through the fixed block 422 to slide in the notch 431. And the end of the swing arm 43 is connected with a positioning slider 311. So the positioning slider 311 is pulled to slide downward along the positioning chute 31 at this time. And the positioning slider 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. Through the positioning spring 313, it is convenient for the later reset operation. And when the positioning slider 311 slides, the push plate 32 on the side wall of the positioning slider 311 and the pressing roller 321 slide towards the upper surface of the steel rail 5 at this time.

[0068] 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 convex block 34 on the side wall of the push plate 32 slides along the guiding groove 343 of the guiding plate 342 at this time. Through the guiding action of the guiding groove 343, the pressing roller 321 slides obliquely downward at this time, and finally the pressing roller 321 slides above the steel rail 5 and squeezes and clamps the top of the steel rail 5. And when the pressing of the pressing roller 321 stops moving, the clamping of the ejector rod 4 on the side wall of the steel rail 5 stops synchronously at this time, and finally the purpose of positioning the steel rail 5 is achieved, and the purpose of clamping is achieved through the combined action of the two.

[0069] Then the operator performs correction. It is necessary to start the hydraulic push rod 13, drive the pressing plate 131 to move downward through the hydraulic push rod 13, and the pressing plate 131 squeezes the convex part of the steel rail 5. And during the downward movement of the pressing plate 131, it is necessary to ensure that the pressing plate 131 presses down in small distances in stages. After pressing down, it needs to be left standing for thirty minutes. Through standing, the stress distribution is made uniform. Repeat the pressing operation multiple times, and finally correct the steel 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 positioning frames (2), the four positioning frames (2) are symmetrically mounted on the workbench (1), and the steel rail (5) is placed at the center of the positioning frame (2), a pair of extrusion arms (22) are rotatably mounted on the side wall of each positioning frame (2), the pair of extrusion arms (22) are in a V shape, and a synchronization plate (23) is horizontally slidably arranged on the side wall of the pair of extrusion arms (22), and the synchronization plate (23) corresponds to the 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 U-shaped frames (221) are mounted on opposite surfaces of the extrusion arms (22), 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), and the slide rod (231) is connected to the synchronization plate (23) with each other.

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) opened 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 connected to each other, and the other end of the tension spring (421) and the side wall of the sliding plate (42) are connected to each other. A notch (431) is opened on the squeezing arm (22). The notch (431) and the sliding cavity (423) are communicated with each other, and 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, wherein the correction method of the subway rail correction device comprises the following steps: 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) in a vertical manner; 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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