Intelligent rail weld straightening machine

Abstract

This application relates to the field of rail straightening equipment, and provides an intelligent rail weld straightening machine, including a machine frame, a laser measurement system, and a straightening force application system. The laser measurement system includes a horizontally sliding walking unit. The straightening force application system includes a first vertical force application mechanism located on the moving path of the walking unit. The first vertical force application mechanism includes a first hydraulic cylinder and a force application column. The first hydraulic cylinder is fixed to an upper moving platform, and the force application column is rotatably connected to the movable end of the first hydraulic cylinder via a rotating mechanism. A swing block is provided on the outer side of the rotating mechanism, and a limiting protrusion is provided on the free end of the swing block. A limiting groove is provided on the outer side of the force application column to fit into the limiting protrusion. When the force application column is in an upward rotating state, the limiting protrusion is matched and locked inside the limiting groove. Based on this, the possibility of collision between the force application column and the walking unit can be reduced in the event of an unexpected power outage, and the possibility of positional displacement or even damage to the walking unit can be reduced.

Description

Technical Field

[0001] This application relates to the field of rail straightening equipment, and more particularly to an intelligent rail weld straightening machine. Background Technology

[0002] In recent years, with the continuous increase in the speed of high-speed rail transportation such as bullet trains and high-speed railways, the requirements for the straightness of steel rails have become increasingly stringent in order to ensure the safety and comfort of trains operating at high speeds. Currently, steel rails are typically manufactured by welding multiple 100-meter standard rail sections sequentially into longer rails at a rail welding base. These longer rails are then transported to the laying site, where they are welded together into a seamless rail line. Bending is prone to occur at the weld joints during rail welding, therefore, straightening of the rail weld joints is necessary after welding.

[0003] The currently disclosed technology includes a straightening machine, comprising a frame, a laser measurement system for measuring the straightness of rails, and a straightening force application system for straightening the curved positions of rails. The laser measurement system includes a traveling unit horizontally slidable on the frame and a laser sensor mounted on the traveling unit. The straightening force application system includes a straightening cylinder and a force application column fixed to the movable end of the cylinder. When the straightening machine is working, the traveling unit travels along the length of the rail, measures the entire rail, and transmits the measurement information to an information processing module inside the frame. This module can then send a feedback signal to the straightening force application unit, causing it to move to the curved position. The straightening cylinder then moves, causing the force application column to press against the side of the rail, thus straightening the rail by bending it.

[0004] When the traveling unit moves along the length of the rail, the straightening cylinder is located on the traveling unit's path. During the movement, the traveling unit may collide with the force-applying column. Therefore, the force-applying column is usually rotatably connected to the moving end of the straightening cylinder and is driven to rotate by a rotating motor, which facilitates avoidance when the traveling unit moves. However, when the traveling unit moves directly under the force-applying column and the straightening machine loses power, the holding force of the rotating motor on the force-applying column disappears. The force-applying column will swing downward under its own weight and collide with the traveling unit, which may cause the traveling unit to shift position or even be damaged, affecting the normal use of the subsequent laser measurement system. Summary of the Invention

[0005] In order to reduce the possibility of collision between the force-applying column and the traveling unit in the event of a power outage, this application provides an intelligent straightening machine for rail welds.

[0006] The intelligent rail weld straightening machine provided in this application adopts the following technical solution:

[0007] A smart rail weld straightening machine includes an equipment frame, a laser measurement system and a straightening force application system. The laser measurement system includes a traveling unit that is horizontally slidably mounted on the equipment frame and a transmission mechanism for driving the traveling unit to move. The traveling unit is equipped with a laser sensing component for measuring the straightness of the rail.

[0008] The straightening force application system includes an upper moving unit located on the moving path of the walking unit. The upper moving unit includes an upper moving platform that is vertically slidably mounted on the equipment frame and a first vertical force application mechanism fixed to the upper moving platform. The first vertical force application mechanism includes a first hydraulic cylinder and a force application column. The first hydraulic cylinder is fixed to the upper moving platform, and the force application column is rotatably connected to the movable end of the first hydraulic cylinder through a rotating mechanism.

[0009] The rotating mechanism has a swing block on the outside, with one end of the swing block rotatably mounted on the upper moving platform; the free end of the swing block has a limiting protrusion, and the outer side of the force-applying column has a limiting groove that is compatible with the limiting protrusion. When the force-applying column is in the upward rotating state, the limiting protrusion is matched and locked inside the limiting groove; the outside of the swing block also has an unlocking mechanism for forcing the limiting protrusion to disengage from the limiting groove.

[0010] By adopting the above technical solution, the transmission mechanism in this application forces the traveling unit to travel along the length of the rail. When measuring the straightness of the rail, the force-applying column is rotated outward by the rotating mechanism, which allows the force-applying column to avoid the traveling unit. During the outward rotation of the force-applying column, it gradually abuts against the swing block and pushes the swing block to rotate upward. When the swing block rotates to the position where the limiting protrusion is directly opposite the limiting groove, the gravity of the swing block forces the limiting protrusion to automatically engage with the limiting groove, thereby maintaining the position of the force-applying column. In the event of an unexpected power outage or loss of the holding force of the rotating mechanism, the force-applying column remains in its original position, greatly reducing the possibility of collision between the force-applying column and the traveling unit, and reducing the possibility of positional deviation or even damage to the traveling unit.

[0011] After the laser measurement system completes the measurement, the unlocking mechanism forces the limiting protrusion to disengage from the limiting groove. The rotation mechanism resets the force-applying column to return to the coaxial position with the moving end of the first hydraulic cylinder. The program controls the rail feed and moves the upward bending position of the rail to directly below the first vertical force-applying mechanism. The action of the first hydraulic cylinder can then press the force-applying column against the rail, thereby straightening the upward bending position of the rail.

[0012] Optionally, the movable end of the first cylinder is fixed with a mounting base, and the rotating mechanism includes a gear rotatably connected to the mounting base and a movable rack horizontally slidably disposed on the mounting base, with the gear and the movable rack meshing with each other; the gear is connected to the force-applying column through a connecting shaft, and the movable rack is connected to the first cylinder that moves it.

[0013] By adopting the above technical solution, the first cylinder is activated to drive the moving rack, which can rotate the gear meshing with the moving rack, thereby driving the force column to rotate outward or reset inward. The operation is convenient and the stability is good. After the force column rotates outward, it can match and engage with the swing block for limit positioning.

[0014] Optionally, the rotating mechanism also includes a second cylinder fixed to the mounting base, and a first cylinder fixed to the movable end of the second cylinder; the second cylinder is in a normally extended state, so that the gear and the moving rack are kept engaged; an elastic element is also provided between the force-applying column and the mounting base, the elastic element being used to force the force-applying column to rotate toward the mounting base.

[0015] By adopting the above technical solution, when the first cylinder actuates to drive the moving rack to rotate, and the force-applying column flips upward to engage with the swing block for a limited stop, the movement of the moving rack is disengaged from the gear by controlling the action of the second cylinder. The first cylinder can then drive the moving rack to quickly reset. Subsequently, the unlocking mechanism actuates to disengage the limiting protrusion from the limiting slot, allowing the force-applying column to quickly reset under the elastic force of the elastic element, returning to a position coaxial with the moving end of the first cylinder. The reset of the second cylinder allows the moving rack to re-engage with the gear, facilitating the next flip of the force-applying column. Throughout the process, the reset of the force-applying column is quick and convenient, which helps to shorten the working cycle of the straightening machine and improve production efficiency.

[0016] Optionally, the upper moving platform is fixed with a rotating frame, and the swing block is rotatably connected to the rotating frame via a rotating shaft; the end of the rotating shaft away from the swing block is fixed with a load-bearing part exposed to the rotating frame; the unlocking mechanism includes a third cylinder fixed to the upper moving platform and an abutment block fixed to the movable end of the third cylinder. The abutment block always faces the load-bearing part. When the third cylinder is activated, the abutment block abuts against the load-bearing part and forces the swing block to rotate away from the force-applying column.

[0017] By adopting the above technical solution, when the limiting protrusion of the swing block is engaged in the limiting groove of the force-applying column, the action of the third cylinder is controlled to make the abutting block abut against the force-bearing part, which can drive the force-bearing part and the abutting block to rotate away from the force-applying column, thereby making it easy to separate the swing block from the force-applying column, so that the force-applying column can return to the position coaxial with the moving end of the first cylinder.

[0018] Optionally, the inner wall of the limiting groove is provided with a snap-fit ​​groove, and the side of the limiting protrusion is movably embedded with a snap-fit ​​block. When the limiting protrusion is matched and snapped into the limiting groove, the snap-fit ​​block is located at the bottom of the limiting protrusion, and the snap-fit ​​block and the snap-fit ​​groove are directly opposite each other. A pull rope is connected to the outside of the snap-fit ​​block, and a winding motor is connected to the end of the pull rope away from the snap-fit ​​block. The winding motor is normally kept in the winding state, so that the snap-fit ​​block is completely retracted into the interior of the limiting protrusion.

[0019] By adopting the above technical solution, when an unexpected power outage occurs, the winding motor is in a relaxed state and loses its pulling force on the pull rope and the locking block. At this time, the locking block can slide naturally into the locking groove under the action of gravity, thereby further improving the fixing effect of the swing block on the force-applying column and reducing the possibility of the force-applying column colliding with the traveling unit.

[0020] Optionally, the upper moving unit further includes two sets of vertical support mechanisms, which are located on opposite sides of the first vertical force-applying mechanism. Each vertical support mechanism includes a movable seat slidably mounted on the upper moving platform and a support column rotatably connected to the movable seat. The movable seat is connected to a first drive mechanism that moves it. The rotation axis between the support column and the movable seat, and the rotation axis between the force-applying column and the movable end of the first hydraulic cylinder are coincident. A linkage mechanism is also provided between the force-applying column and the support column to make the support column rotate together with the force-applying column.

[0021] By adopting the above technical solution, when the laser measurement system measures the straightness of the rail, the support column is also located on the moving path of the traveling unit. When the force-applying column is flipped upward by the rotating mechanism to avoid the traveling unit, the support column can rotate together with the force-applying column through the linkage mechanism, thereby quickly completing the flipping of the force-applying column and the two support columns, and quickly and conveniently avoiding the traveling unit. The operation is convenient and fast.

[0022] Furthermore, after the laser measurement system completes the measurement and calculates the optimal fulcrum position for rail straightening, the first drive mechanism moves the movable seat to the optimal fulcrum position, controlling the upper moving platform to move downwards and causing the support columns to press against the rail. The two support columns then apply force to the rail. Next, the first hydraulic cylinder is controlled to force the force-applying column against the rail, and the first hydraulic cylinder continues to push the force-applying column downwards, thus straightening the upward-bending sections of the rail. This three-point straightening method allows for rapid completion of the rail straightening operation, offering advantages such as high efficiency, convenience, and automation.

[0023] Optionally, the linkage mechanism includes a movable sleeve movably fitted onto the force-applying column and two sets of telescopic components fixed to the outer side of the movable sleeve. The end of the telescopic component away from the movable sleeve is connected to the support column. The telescopic component includes multiple hollow sleeves sequentially fitted from the inside to the outside. The inner circumferential surface of the hollow sleeve is provided with a limiting ring, and the inner diameter of each limiting ring is adapted to the outer diameter of the adjacent inner hollow sleeve. The outer circumferential surface of the hollow sleeve is provided with an anti-detachment ring, and the outer diameter of each anti-detachment ring is adapted to the inner diameter of the adjacent outer hollow sleeve. The limiting ring and the anti-detachment ring are located at both ends of the hollow sleeve.

[0024] By adopting the above technical solution, when the first drive mechanism drives the moving seat to move horizontally, the moving seat can drive the telescopic component to unfold / retract, and the adjacent hollow sleeves maintain the sleeved state through the cooperation of the limiting ring and the anti-detachment ring; the movable sleeve is always movably sleeved on the force-applying column, and when the first hydraulic cylinder pushes the force-applying column to move, the movable sleeve can slide relative to the force-applying column, which is conducive to the force-applying column properly straightening the rail. In addition, when the rotating mechanism drives the force-applying column to flip upward, the force-applying column can abut against the movable sleeve and drive the support column to rotate together through the telescopic component, thereby quickly completing the flipping and avoidance of the force-applying column and the two support columns.

[0025] Optionally, the straightening force application system also includes a lower moving unit, which includes a lower moving platform, a second vertical force application mechanism, and a horizontal force application mechanism; wherein, the lower moving platform is vertically slidably mounted on the equipment frame, and the second vertical force application mechanism includes a second hydraulic cylinder fixed to the lower moving platform and a lifting platform fixed to the movable end of the second hydraulic cylinder, with the lifting platform movably connected to the lower moving platform;

[0026] The horizontal force application mechanism includes a straightening base that is slidably installed on the lifting platform and a third hydraulic cylinder for driving the straightening base to move. The straightening base is provided with a first receiving area for accommodating the rail, and force application blocks for applying force to the web of the rail are fixed on the two inner side walls of the first receiving area.

[0027] By adopting the above technical solution, after the rail is fixed to the straightening machine, the lower moving platform moves upward, and the rail enters the first receiving area of ​​the straightening base and abuts against the bottom wall of the first receiving area. When the rail exhibits localized downward bending, the second hydraulic cylinder pushes the lifting platform and the straightening base upward, thus straightening the rail vertically. When the rail exhibits localized horizontal bending, the third hydraulic cylinder is controlled to force the straightening base to move horizontally. The force-applying blocks on the inner wall of the straightening base act on the web of the rail, thereby straightening the rail horizontally.

[0028] Optionally, the lower moving unit also includes two sets of bidirectional support mechanisms, which are located on opposite sides of the horizontal force application mechanism. The bidirectional support mechanism includes a support base and two guide blocks. The support base is slidably installed on the lower moving platform and is connected to a second drive mechanism that moves it. The support base is provided with a second receiving area for accommodating the rail, and the two guide blocks are respectively installed on the two inner sidewalls of the second receiving area.

[0029] By adopting the above technical solution, after the rail is fixed to the straightening machine, the lower moving platform moves upward, and the rail enters the second accommodating area of ​​the support seat, with the bottom of the rail abutting against the bottom wall of the second accommodating area. During straightening, the vertical support mechanism and the support seat provide a fulcrum for vertical force application and straightening. The two guide blocks abut against the two opposite sides of the rail, which provides a fulcrum for horizontal force application and straightening. The rail is straightened in a three-point straightening manner.

[0030] Optionally, the walking unit includes a translation base slidably connected to the equipment frame, a lifting base vertically slidably disposed on the translation base, and a linear module for driving the lifting base to move. The transmission mechanism is connected to the translation base and is used to drive the translation base to move.

[0031] The lifting base is fixed with a mounting frame, which is installed in the third accommodating area for accommodating the rails; the laser sensing component includes a top laser displacement sensor and two side laser displacement sensors. The top laser displacement sensor is installed inside the third accommodating area, and the two side laser displacement sensors are fixed to the bottom of the mounting frame and are located on opposite sides of the third accommodating area.

[0032] By adopting the above technical solution, the linear module drives the lifting base and mounting frame to move downwards, and the rail can enter the third accommodating area of ​​the mounting frame. By controlling the transmission mechanism, the walking unit is driven to move along the length of the rail. The top laser displacement sensor can measure the straightness of the top surface of the entire rail, while the side laser displacement sensor can measure the straightness of the two sides of the rail, thereby quickly determining the position where the rail needs to be straightened.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. After the force-applying column flips upward, it is matched and engaged with the swing block through the cooperation of the limiting protrusion and the limiting groove. In the event of an unexpected power failure, the force-applying column can be kept in its original position, reducing the possibility of collision between the force-applying column and the walking unit, and reducing the possibility of positional displacement or even damage to the walking unit.

[0035] 2. The winding motor winds up the pull rope and the locking block. In the event of an unexpected power outage, the winding motor loosens and loses its tension on the pull rope and the locking block. The locking block can slide down into the locking groove naturally under the action of gravity, thereby further improving the limiting effect of the swing block on the force application column and reducing the possibility of the force application column colliding with the walking unit.

[0036] 3. By using the linkage component to make the support column rotate together with the force-applying column, the force-applying column and the two support columns can be flipped quickly and conveniently, allowing the traveling unit to avoid obstacles. The operation is convenient and fast. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0038] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0039] Figure 3 This is a schematic diagram of the upper moving unit in Embodiment 1;

[0040] Figure 4 This is a structural schematic diagram of the connection position between the force-applying column and the first hydraulic cylinder in Embodiment 1, mainly illustrating the structure of the rotating mechanism;

[0041] Figure 5 This is a half-sectional view of the force-applying column and the swing block after they are locked together in Embodiment 1;

[0042] Figure 6 This is a schematic diagram of the telescopic component in Example 1;

[0043] Figure 7 This is a schematic diagram of the lower moving unit in Embodiment 1;

[0044] Figure 8 This is a structural diagram of the connection position between the force-applying column and the first oil cylinder in Embodiment 2, mainly illustrating the structure of the rotating mechanism.

[0045] Explanation of reference numerals in the attached drawings: 1. Equipment frame; 11. Rolling wheel assembly; 12. Clamping mechanism; 2. Laser measurement system; 21. Walking unit; 211. Translation base; 212. Lifting base; 213. Linear module; 214. Mounting frame; 2141. Third accommodating area; 22. Transmission mechanism; 221. Transmission wheel; 222. Conveyor belt; 223. Second servo motor; 23. Laser sensing component; 232. Top laser displacement sensor; 231. Side laser displacement sensor;

[0046] 3. Upper moving unit; 31. Upper moving platform; 311. Rotating frame; 32. First vertical force application mechanism; 321. First hydraulic cylinder; 322. Force application column; 3221. Limiting groove; 3222. Snap-fit ​​groove; 323. Mounting base; 324. Tension spring; 325. Wear-resistant part; 33. Vertical support mechanism; 331. Moving seat; 332. Support column; 34. First drive mechanism; 341. Drive motor; 342. Lead screw; 343. Transmission assembly;

[0047] 4. Rotating mechanism; 41. Gear; 42. Moving rack; 43. First cylinder; 44. Second cylinder; 5. Swing block; 51. Limiting protrusion; 52. Load-bearing part; 53. Locking block; 54. Pull rope; 55. Rewinding motor; 6. Unlocking mechanism; 61. Third cylinder; 62. Abutting block; 7. Linkage mechanism; 71. Movable sleeve; 72. Hollow sleeve; 721. Limiting ring; 722. Anti-detachment ring;

[0048] 8. Lower moving unit; 81. Lower moving platform; 82. Second vertical force application mechanism; 821. Second hydraulic cylinder; 822. Lifting platform; 83. Horizontal force application mechanism; 831. Third hydraulic cylinder; 832. Straightening base; 8321. First accommodating area; 833. Force application block; 84. Bidirectional support mechanism; 841. Support seat; 8411. Second accommodating area; 842. Guide block; 85. Second drive mechanism. Detailed Implementation

[0049] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0050] Example 1

[0051] This application discloses an intelligent straightening machine for rail welds.

[0052] Reference Figure 1 A smart rail weld straightening machine includes a machine frame 1, a laser measurement system 2 for measuring the straightness of the rail, and a straightening force application system for straightening the bending position of the rail. The machine frame 1 has a processing module inside, which receives the measurement information from the laser measurement system 2, processes and calculates the measurement information through a program algorithm to obtain the position of the rail to be straightened and the position of the force application fulcrum, and then controls the force application straightening system to straighten the rail.

[0053] The equipment frame 1 has multiple sets of rolling rollers 11 fixed on its side, all of which are spaced apart along the length of the equipment frame 1. When straightening the rails, the rails can be placed on top of each set of rolling rollers 11. One set of rolling rollers 11 is connected to a first servo motor; by controlling the operation of the first servo motor, the rolling rollers 11 can be rotated, thereby feeding the rails forward. The equipment frame 1 also has two sets of clamping mechanisms 12, located at the front and rear ends of all rolling rollers 11 respectively, which can clamp and fix the rails. It should be noted that the rolling rollers 11 and clamping mechanisms 12 are conventional designs in this field and will not be described in detail here.

[0054] Reference Figure 2The laser measurement system 2 includes a traveling unit 21 horizontally slidably mounted on the equipment frame 1 and a transmission mechanism 22 for driving the traveling unit 21 to move. The traveling unit 21 is equipped with a laser sensing component 23 for measuring the straightness of the rail. By driving the traveling unit 21 along the length of the rail through the transmission mechanism 22, the laser sensing component 23 can measure the straightness of the rail at various positions and transmit the measurement information to the processing module.

[0055] Specifically, the transmission mechanism 22 includes a transmission wheel 221, a transmission belt 222, and a second servo motor 223. There are two transmission wheels 221, which are spaced apart and rotatably connected to the equipment frame 1. The transmission belt 222 is sleeved on the outer periphery of the two transmission wheels 221 and kept taut. The second servo motor 223 is fixed to the frame, and the output end of the second servo motor 223 is fixedly connected to one of the transmission wheels 221 to drive the transmission wheel 221 to rotate and move the transmission belt 222.

[0056] The traveling unit 21 includes a translation base 211, a lifting base 212, and a linear module 213. The translation base 211 is slidably connected to the frame via a slide rail, and its movement direction is horizontal. A connecting seat is fixed to the back of the translation base 211, and a conveyor belt 222 passes through and is fixed to the connecting seat, allowing the movement of the conveyor belt 222 to smoothly drive the translation base 211. The lifting base 212 is slidably connected to the translation base 211 via a slide rail, and its movement direction is vertical. The linear module 213 is fixed to the translation base 211, and its movable end is fixed to the lifting base 212, used to drive the lifting base 212 to move up and down. A mounting frame 214 is fixed to the side of the lifting base 212 away from the translation base 211, and the bottom of the mounting frame 214 has a third receiving area 2141 for accommodating the rail.

[0057] The laser sensing assembly 23 includes a top laser displacement sensor 232 and two side laser displacement sensors 231. The top laser displacement sensor 232 is fixed in the third receiving area 2141 and is used to measure the straightness of the top surface of the entire rail. The two side laser displacement sensors 231 are fixed to the bottom of the mounting bracket 214 and are located on opposite sides of the third receiving area 2141, respectively, and are used to measure the straightness of the two sides of the rail.

[0058] Back Figure 1 The straightening force application system includes an upper moving unit 3 and a lower moving unit 8. The upper moving unit 3 is located above the rail and along the movement path of the traveling unit 21; the lower moving unit 8 is located below the rail. (Refer to...) Figure 3The upper moving unit 3 includes an upper moving platform 31, a first vertical force application mechanism 32, and two sets of vertical support mechanisms 33. The upper moving platform 31 is vertically slidably mounted on the equipment frame 1. The equipment frame 1 is also provided with a first linear drive component for driving the upper moving platform 31 to rise and fall.

[0059] The first vertical force application mechanism 32 includes a first hydraulic cylinder 321 and a force application column 322. The first hydraulic cylinder 321 is fixed to the top surface of the upper moving platform 31. The output end of the first hydraulic cylinder 321 extends to the bottom of the upper moving platform 31 and is fixed with a mounting base 323. The bottom of the mounting base 323 is provided with a mounting groove. The force application column 322 is rotatably installed in the mounting groove, so that the force application column 322 can rotate relative to the movable end of the first hydraulic cylinder 321. When the central axis of the force application column 322 coincides with the central axis of the first hydraulic cylinder 321, the force application column 322 abuts against the bottom surface of the mounting base 323, so that the movable end of the first hydraulic cylinder 321 can smoothly push the force application column 322 downward when it feeds outward. In addition, the first hydraulic cylinder 321 is also provided with a magnetostrictive displacement sensor and a pressure sensor, which are used to detect the straightening displacement and straightening tonnage of the first hydraulic cylinder 321, respectively.

[0060] A wear-resistant component 325 is fixed to the end of the force-applying column 322 away from the mounting base 323. The wear-resistant component 325, as the main force-applying component for straightening the rail, is made of hard alloy material, which can maintain a good service life. A rotating mechanism 4 is provided between the force-applying column 322 and the mounting base 323 to drive the force-applying column 322 to rotate.

[0061] Simultaneously refer to Figure 4 The rotating mechanism 4 includes a gear 41, a movable rack 42, and a first cylinder 43. The gear 41 is rotatably connected to the side of the mounting base 323, and a connecting shaft is fixed between the gear 41 and the force-applying column 322. The connecting shaft passes through the mounting base 323 and is freely rotatable. The movable rack 42 is slidably disposed on the side of the mounting base 323, and its movement direction is horizontal. The movable rack 42 meshes with the gear 41. The first cylinder 43 is fixed to the side of the mounting base 323, and its movable end is connected to the movable rack 42. By pushing the movable rack 42 with the first cylinder 43, the gear 41 can be rotated, thereby causing the force-applying column 322 to rotate upward.

[0062] The bottom of the upper moving platform 31 is fixed with a rotating frame 311, and the rotating frame 311 is rotatably connected to a swing block 5. The swing block 5 is located outside the force-applying column 322. In this embodiment, the swing block 5 is made of high-density mass material, such as steel, iron and its alloys, which is conducive to the swing block 5 being subjected to gravity and maintaining a natural hanging state under normal conditions.

[0063] A limiting protrusion 51 is provided at the end of the swing block 5 away from its hinge point with the upper moving platform 31. The limiting protrusion 51 is integrally formed with the swing block 5. A limiting groove 3221 is provided on the side of the force-applying column 322. The shape of the limiting groove 3221 is the same as the shape of the limiting protrusion 51. (See also...) Figure 5 When the rotating mechanism 4 forces the force-applying column 322 to flip upward, the force-applying column 322 abuts against the naturally drooping swing block 5, and then the force-applying column 322 pushes the swing block 5 to rotate upward. Finally, when the limiting protrusion 51 is in the position directly opposite the limiting groove 3221, the limiting protrusion 51 can automatically lock into the limiting groove 3221, thereby keeping the swing block 5 and the force-applying column 322 fixed.

[0064] In addition, the inner wall of the limiting groove 3221 is provided with a snap-fit ​​groove 3222, and the side of the limiting protrusion 51 is movably fitted with a snap-fit ​​block 53. When the limiting protrusion 51 enters the limiting groove 3221 and keeps the swing block 5 and the force-applying column 322 fixed, the snap-fit ​​block 53 is located at the bottom of the limiting protrusion 51 and is positioned directly opposite the snap-fit ​​groove 3222. A pull rope 54 is provided on the outside of the snap-fit ​​block 53. The pull rope 54 passes through the limiting protrusion 51 and extends to the outside of the swing block 5. The upper moving platform 31 is fixed with a winding motor 55, and the pull rope 54 is connected to the rotating end of the winding motor 55.

[0065] When the straightening machine is working, the take-up motor 55 normally winds up the pull rope 54 and fully retracts the locking block 53 into the limiting protrusion 51. In the event of a sudden power failure, the take-up motor 55 loses tension on the pull rope 54, causing the locking block 53 to automatically enter the locking groove 3222 under gravity. This further improves the fixing effect of the swing block 5 on the force-applying column 322 and reduces the possibility of the force-applying column 322 colliding with the walking unit 21. It should be noted that the take-up motor 55 in this embodiment is also a servo motor. When the locking block 53 abuts against the inner wall of the locking groove 3222 and the resistance increases, the take-up motor 55 stops rotating to wind up the pull rope 54.

[0066] The mounting base 323 is also provided with an unlocking mechanism 6, which is used to force the limiting protrusion 51 to disengage from the limiting groove 3221, so as to release the connection lock between the swing block 5 and the force application column 322; the unlocking mechanism 6 includes a third cylinder 61 and an abutment block 62. The third cylinder 61 is fixed to the bottom of the upper moving platform 31, and the abutment block 62 is fixed to the movable end of the third cylinder 61.

[0067] In this embodiment, the swing block 5 is rotatably connected to the rotating frame 311 via a rotating shaft. A load-bearing part 52 is fixed at the end of the rotating shaft away from the swing block 5. The load-bearing part 52 is exposed outside the rotating frame 311, and the load-bearing part 52, the rotating shaft, and the swing block 5 are all integrally formed. The abutment block 62 always faces the load-bearing part 52. When the third cylinder 61 is activated, the abutment block 62 abuts against the load-bearing part 52 and forces the load-bearing part 52 and the swing block 5 to rotate away from the force-applying column 322, thereby allowing the limiting protrusion 51 to smoothly limit the groove 3221 and quickly release the connection lock between the force-applying column 322 and the swing block 5.

[0068] Back Figure 3 Two sets of vertical support mechanisms 33 are located on opposite sides of the first vertical force-applying mechanism 32. Each vertical support mechanism 33 includes a movable seat 331 and a support column 332. The movable seat 331 is slidably mounted on the upper movable platform 31, and a first drive mechanism 34 is provided between the movable seat 331 and the upper movable platform 31 to drive the movable seat 331 to move towards / away from the force-applying column 322. Specifically, the first drive mechanism 34 includes a drive motor 341, a lead screw 342, and a transmission assembly 343. A mounting plate is fixed to the side edge of the top of the upper movable platform 31, and the drive motor 341 is fixed to the mounting plate. The lead screw 342 is rotatably connected to the mounting plate, and its axial direction is aligned with the length direction of the upper movable platform 31. The end of the lead screw 342 away from the mounting plate passes through the movable seat 331 and is threadedly connected to it.

[0069] The transmission assembly 343 is disposed between the drive motor 341 and the lead screw 342, so that when the drive motor 341 is actuated, it can drive the lead screw 342 to rotate through the transmission assembly 343, thereby realizing the movement of the movable seat 331 on the upper movable platform 31. In this embodiment, the transmission assembly 343 adopts a belt and pulley transmission method; in other embodiments, the transmission assembly 343 may also adopt a sprocket, chain belt, or gear pair transmission method, and is not limited to the method provided in this embodiment.

[0070] The support column 332 is rotatably connected to the bottom of the movable seat 331. When the support column 332 is in a vertical state, the support column 332 abuts against the bottom surface of the movable seat 331. The rotation axis between the support column 332 and the movable seat 331 and the rotation axis between the force-applying column 322 and the movable end of the first oil cylinder 321 are coincident. Furthermore, a linkage mechanism 7 is provided between the force-applying column 322 and the support column 332 to make the support column 332 rotate together with the force-applying column 322.

[0071] Specifically, the linkage mechanism 7 includes a movable sleeve 71 movably fitted onto the force-applying column 322 and two sets of telescopic components fixed to the outer side of the movable sleeve 71. The ends of the two sets of telescopic components away from the movable sleeve 71 are respectively fixedly connected to the support column 332. The telescopic components include multiple hollow sleeves 72 sequentially fitted from the inside out, with the outer diameter of each hollow sleeve 72 increasing sequentially from the inside out. In this embodiment, the innermost hollow sleeve 72 is fixed to the movable sleeve 71, while the outermost hollow sleeve 72 is fixed to the support column 332. In another feasible embodiment, the innermost hollow sleeve 72 may also be fixed to the support column 332, while the outermost hollow sleeve 72 is correspondingly fixed to the movable sleeve 71, not limited to the method provided in this embodiment.

[0072] Additionally, refer to Figure 6 Each hollow sleeve 72 has an integrally formed limiting ring 721 on its inner circumferential surface, and the inner diameter of each limiting ring 721 is equal to the outer diameter of the adjacent hollow sleeve 72 on the inner side; each hollow sleeve 72 has an integrally formed anti-detachment ring 722 on its outer circumferential surface, and the outer diameter of each anti-detachment ring 722 is equal to the inner diameter of the adjacent hollow sleeve 72 on the outer side; the limiting ring 721 and the anti-detachment ring 722 are located at both ends of the hollow sleeve 72, respectively, to prevent the adjacent movable sleeves from detaching from each other.

[0073] Simultaneously refer to Figure 3 When the drive motor 341 operates and drives the movable seat 331 to move, the hollow sleeves 72 can expand / contract with each other, allowing the movable seat 331 and the support column 332 to move smoothly. When the rotating mechanism 4 drives the force-applying column 322 to flip upward, the force-applying column 322 can abut against the movable sleeve 71 and drive the support column 332 to rotate together through the telescopic component, thereby quickly completing the flipping and avoidance of the force-applying column 322 and the two support columns 332.

[0074] Reference Figure 7 The lower moving unit 8 includes a lower moving platform 81, a second vertical force-applying mechanism 82, a horizontal force-applying mechanism 83, and two sets of bidirectional support mechanisms 84. The lower moving platform 81 is vertically slidably mounted on the equipment frame 1, and the equipment frame 1 is also equipped with a second linear drive component for driving the lower moving platform 81 to rise and fall. The second vertical force-applying mechanism 82 includes a second hydraulic cylinder 821 fixed to the bottom of the lower moving platform 81 and a lifting platform 822 connected to the movable end of the second hydraulic cylinder 821. The lifting platform 822 is vertically slidably connected to the lower moving platform 81. By controlling the movement of the second hydraulic cylinder 821, the lifting platform 822 can be driven to move upward, thereby straightening the downward bending of the rail.

[0075] The horizontal force application mechanism 83 includes a straightening base 832 slidably mounted on the top of the lifting platform 822 and a third hydraulic cylinder 831 for driving the straightening base 832 to move. The straightening base 832 has a first receiving area 8321 for accommodating the rail. Force application blocks 833 are fixed to the two inner sidewalls of the first receiving area 8321, and are used to apply force to the web of the rail to straighten it. The third hydraulic cylinder 831 is fixed to the lifting platform 822, and its movable end is connected to the straightening base 832. By controlling the movement of the third hydraulic cylinder 831, the straightening base 832 can be moved horizontally, thereby straightening the horizontal bending position of the rail. It should be noted that the second hydraulic cylinder 821 and the third hydraulic cylinder 831 also have a magnetostrictive displacement sensor and a pressure sensor respectively inside.

[0076] Two sets of bidirectional support mechanisms 84 are located on opposite sides of the horizontal force application mechanism 83. The bidirectional support mechanism 84 includes a support base 841 and two guide blocks 842. The support base 841 is slidably installed on the lower moving platform 81, and a second drive mechanism 85 is provided between the support base 841 and the lower moving platform 81 to drive the support base 841 to move towards / away from the straightening base 832. It should be noted that the structure and installation method of the second drive mechanism 85 in this embodiment are the same as those of the first drive mechanism 34, and will not be described in detail here.

[0077] The top of the support base 841 is provided with a second receiving area 8411 for accommodating the rail. Two guide blocks 842 are respectively fixed to the two inner side walls of the second receiving area 8411. When the rail enters the second receiving area 8411, the two guide blocks 842 abut against the two sides of the rail web, providing horizontal support. In addition, each guide block 842 has an arc-shaped protrusion on its side facing the other guide block 842. The arc-shaped protrusion can avoid obstruction, allowing the horizontally partially curved rail to smoothly enter between the first receiving area 8321 and the two second receiving areas 8411.

[0078] The implementation principle of Embodiment 1 of this application is as follows:

[0079] In this application, the transmission mechanism 22 forces the walking unit 21 to walk along the length of the rail and measures the straightness of the rail. When controlling the first cylinder 43 to move, it drives the moving rack 42 to move horizontally, which can make the gear 41 rotate and drive the force-applying column 322 to rotate outward, so that the force-applying column 322 avoids the walking unit 21. During the outward rotation of the force-applying column 322, it gradually abuts against the swing block 5 and pushes the swing block 5 to rotate upward. When the swing block 5 rotates to the position where the limiting protrusion 51 is directly opposite the limiting groove 3221, the gravity of the swing block 5 forces the limiting protrusion 51 to automatically engage inside the limiting groove 3221, thereby maintaining the position of the force-applying column 322. In the event of an unexpected power outage or loss of holding force of the rotating mechanism 4, the force-applying column 322 remains in its original position, greatly reducing the possibility of the force-applying column 322 colliding with the walking unit 21 and reducing the possibility of the walking unit 21 being misaligned or even damaged.

[0080] After the laser measurement system 2 completes the measurement, the third cylinder 61 is controlled to rotate the swing block 5, which can disengage the limiting protrusion 51 from the limiting groove 3221. Then, the first cylinder 43 is controlled to reset, which can return the force column 322 to the position coaxial with the moving end of the first oil cylinder 321. The processing module controls the rolling wheel group 11 to feed the rail forward, so that the upward bending position of the rail is moved to the position directly below the first vertical force application mechanism 32. Then, the action of the first oil cylinder 321 can make the force column 322 press against the rail, thereby straightening the upward bending position of the rail.

[0081] Example 2

[0082] This application discloses an intelligent straightening machine for rail welds.

[0083] Reference Figure 8 The present application discloses an intelligent straightening machine for rail welds. The remaining components are the same as those in embodiment 1, and will not be described in detail here. The difference from embodiment 1 is that the first cylinder 43 in this embodiment is slidably mounted on the mounting base 323, and the moving direction of the first cylinder 43 is vertical.

[0084] The rotating mechanism 4 also includes a second cylinder 44, which is fixed to the mounting base 323. The movable end of the second cylinder 44 is fixedly connected to the first cylinder 43. In this embodiment, the second cylinder 44 is in the normally extended state. At this time, the gear 41 and the moving rack 42 are engaged. Controlling the action of the first cylinder 43 can move the moving rack 42 and drive the gear 41 and the swing block 5 to rotate. When the swing block 5 is locked with the force application column 322, controlling the action of the second cylinder 44 can disengage the moving rack 42 from the gear 41, so as to facilitate the rapid reset of the first cylinder 43.

[0085] An elastic element, a tension spring 324, is provided between the force-applying column 322 and the mounting base 323. One end of the tension spring 324 is connected to the top of the force-applying column 322. A clearance groove is provided at the bottom of the mounting base 323, and the other end of the tension spring 324 is connected to the inner wall of the clearance groove. The tension spring 324 can always generate an elastic force acting on the force-applying column 322, so that after the connection between the swing block 5 and the force-applying column 322 is released, the force-applying column 322 can quickly return to the position coaxial with the movable end of the first hydraulic cylinder 321.

[0086] The implementation principle of Embodiment 2 of this application is as follows:

[0087] When the first cylinder 43 actuates, causing the moving rack 42 to rotate and the force-applying column 322 to flip upward and engage with the swing block 5 for a limited stop, the second cylinder 44 is controlled to disengage the moving rack 42 from the gear 41. The first cylinder 43 can then drive the moving rack 42 to quickly reset. Subsequently, the unlocking mechanism 6 actuates, causing the limiting protrusion 51 to disengage from the limiting slot. Under the elastic force of the elastic element, the force-applying column 322 can quickly reset and return to its coaxial position with the moving end of the first cylinder 321. The reset of the second cylinder 44 allows the moving rack 42 to re-engage with the gear 41, facilitating the next flip of the force-applying column 322. Throughout the process, the reset of the force-applying column 322 is quick and convenient, which helps to shorten the working cycle of the straightening machine and improve production efficiency.

[0088] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A smart rail weld straightening machine, comprising a machine frame (1), a laser measurement system (2), and a straightening force application system, wherein the laser measurement system (2) comprises a walking unit (21) horizontally slidably mounted on the machine frame (1) and a transmission mechanism (22) for driving the walking unit (21) to move, and the walking unit (21) is equipped with a laser sensing component (23) for measuring the straightness of the rail; characterized in that: The straightening force application system includes an upper moving unit (3) located on the moving path of the walking unit (21). The upper moving unit (3) includes an upper moving platform (31) that is vertically slidably set on the equipment frame (1) and a first vertical force application mechanism (32) fixed to the upper moving platform (31). The first vertical force application mechanism (32) includes a first hydraulic cylinder (321) and a force application column (322). The first hydraulic cylinder (321) is fixed to the upper moving platform (31), and the force application column (322) is rotatably connected to the movable end of the first hydraulic cylinder (321) through a rotating mechanism (4). The rotating mechanism (4) is provided with a swing block (5) on its outer side. One end of the swing block (5) is rotatably mounted on the upper moving platform (31). The free end of the swing block (5) is provided with a limiting protrusion (51). The outer side of the force-applying column (322) is provided with a limiting groove (3221) that is compatible with the limiting protrusion (51). When the force-applying column (322) is in an upward rotating state, the limiting protrusion (51) is matched and locked inside the limiting groove (3221). The swing block (5) is also provided with an unlocking mechanism (6) for forcing the limiting protrusion (51) to disengage from the limiting groove (3221). The upper moving platform (31) is fixed with a rotating frame (311). The swing block (5) is rotatably connected to the rotating frame (311) through a rotating shaft. The end of the rotating shaft away from the swing block (5) is fixed with a load-bearing part (52) exposed to the rotating frame (311). The unlocking mechanism (6) includes a third cylinder (61) fixed to the upper moving platform (31) and an abutment block (62) fixed to the movable end of the third cylinder (61). The abutment block (62) always faces the force-bearing part (52). When the third cylinder (61) moves, the abutment block (62) abuts against the force-bearing part (52) and forces the swing block (5) to rotate away from the force-applying column (322). The inner wall of the limiting groove (3221) is provided with a snap-fit ​​groove (3222). The side of the limiting protrusion (51) is movably embedded with a snap-fit ​​block (53). When the limiting protrusion (51) is matched and snapped into the limiting groove (3221), the snap-fit ​​block (53) is located at the bottom of the limiting protrusion (51), and the snap-fit ​​block (53) and the snap-fit ​​groove (3222) are directly opposite each other. A pull rope (54) is connected to the outside of the snap-fit ​​block (53). The end of the pull rope (54) away from the snap-fit ​​block (53) is connected to a winding motor (55). The winding motor (55) is normally kept in the winding state to make the snap-fit ​​block (53) completely retract into the limiting protrusion (51).

2. The intelligent rail weld straightening machine according to claim 1, characterized in that: The movable end of the first cylinder (321) is fixed with a mounting base (323). The rotating mechanism (4) includes a gear (41) rotatably connected to the mounting base (323) and a moving rack (42) horizontally slidably disposed on the mounting base (323). The gear (41) and the moving rack (42) mesh with each other. The gear (41) is connected to the force-applying column (322) through a connecting shaft, and the moving rack (42) is connected to a first cylinder (43) that moves it.

3. The intelligent rail weld straightening machine according to claim 2, characterized in that: The rotating mechanism (4) further includes a second cylinder (44) fixed to the mounting base (323), and the first cylinder (43) is fixed to the movable end of the second cylinder (44); the second cylinder (44) is in a normally extended state, used to keep the gear (41) meshing with the moving rack (42); an elastic element is also provided between the force-applying column (322) and the mounting base (323), and the elastic element is used to force the force-applying column (322) to rotate towards the mounting base (323).

4. The intelligent rail weld straightening machine according to claim 1, characterized in that: The upper moving unit (3) further includes two sets of vertical support mechanisms (33), which are located on opposite sides of the first vertical force application mechanism (32). The vertical support mechanism (33) includes a movable seat (331) slidably mounted on the upper moving platform (31) and a support column (332) rotatably connected to the movable seat (331). The movable seat (331) is connected to a first drive mechanism (34) that moves it. The axis of rotation between the support column (332) and the movable seat (331) coincides with the axis of rotation between the force application column (322) and the movable end of the first oil cylinder (321). A linkage mechanism (7) is also provided between the force application column (322) and the support column (332) to make the support column (332) rotate together with the force application column (322).

5. The intelligent rail weld straightening machine according to claim 4, characterized in that: The linkage mechanism (7) includes a movable sleeve (71) movably sleeved on the force-applying column (322) and two sets of telescopic components fixed on the outer side of the movable sleeve (71). The end of the telescopic component away from the movable sleeve (71) is connected to the support column (332). The telescopic assembly includes a plurality of hollow sleeves (72) sequentially sleeved from the inside to the outside. The inner circumferential surface of each hollow sleeve (72) is provided with a limiting ring (721), and the inner diameter of each limiting ring (721) is adapted to the outer diameter of the adjacent hollow sleeve (72) on the inside. The outer circumferential surface of each hollow sleeve (72) is provided with an anti-detachment ring (722), and the outer diameter of each anti-detachment ring (722) is adapted to the inner diameter of the adjacent hollow sleeve (72) on the outside. The limiting ring (721) and the anti-detachment ring (722) are respectively located at both ends of the hollow sleeve (72).

6. The intelligent rail weld straightening machine according to claim 1, characterized in that: The straightening force application system also includes a lower moving unit (8), which includes a lower moving platform (81), a second vertical force application mechanism (82), and a horizontal force application mechanism (83). The lower moving platform (81) is vertically slidably mounted on the equipment frame (1). The second vertical force application mechanism (82) includes a second oil cylinder (821) fixed to the lower moving platform (81) and a lifting platform (822) fixed to the movable end of the second oil cylinder (821). The lifting platform (822) is movably connected to the lower moving platform (81). The horizontal force application mechanism (83) includes a straightening base (832) slidably mounted on the lifting platform (822) and a third hydraulic cylinder (831) for driving the straightening base (832) to move. The straightening base (832) is provided with a first receiving area (8321) for accommodating the rail. The two inner sidewalls of the first receiving area (8321) are respectively fixed with force application blocks (833) for applying force to the web of the rail.

7. The intelligent rail weld straightening machine according to claim 6, characterized in that: The lower moving unit (8) also includes two sets of bidirectional support mechanisms (84), which are located on opposite sides of the horizontal force application mechanism (83). The bidirectional support mechanism (84) includes a support base (841) and two guide blocks (842). The support base (841) is slidably mounted on the lower moving platform (81), and the support base (841) is connected to a second drive mechanism (85) that moves it. The support base (841) is provided with a second receiving area (8411) for accommodating the rail, and the two guide blocks (842) are respectively installed on the two inner sidewalls of the second receiving area (8411).

8. The intelligent rail weld straightening machine according to claim 1, characterized in that: The walking unit (21) includes a translation base (211) slidably connected to the equipment frame (1), a lifting base (212) vertically slidably disposed on the translation base (211), and a linear module (213) for driving the lifting base (212) to move. The transmission mechanism (22) is connected to the translation base (211) and is used to drive the translation base (211) to move. The lifting base (212) is fixed with a mounting frame (214), which is located in the third receiving area (2141) for accommodating the rail; the laser sensing component (23) includes a top laser displacement sensor (232) and two side laser displacement sensors (231). The top laser displacement sensor (232) is installed inside the third receiving area (2141), and the two side laser displacement sensors (231) are fixed to the bottom of the mounting frame (214) and are located on opposite sides of the third receiving area (2141).

Images