Railway turnout, long steel rail flash welding and heat treatment integrated machine

Abstract

The utility model discloses a railway turnout, long steel rail flash welding and heat treatment integrated machine, including top forging mechanism, normalizing heat treatment mechanism, controller, movable frame and static frame, normalizing heat treatment mechanism sets up between movable frame and static frame, and can be up and down slip setting along the direction perpendicular to the welding joint, first clamping mechanism includes first tongs and second tongs, and second clamping mechanism includes third tongs and fourth tongs, and first tongs are installed with detachable first electrode, and second tongs are installed with detachable second electrode, and first rail waist clamping electrode is installed on third tongs, and second rail waist clamping electrode is installed on fourth tongs. The utility model provides a railway turnout, long steel rail flash welding and heat treatment integrated machine, have the integrated equipment of satisfying turnout, long steel rail field flash welding and postweld heat treatment simultaneously, have reduced equipment cost, avoided the welding operation mutual interference due to the too many field equipment.

Description

Technical Field

[0001] This utility model relates to the field of flash welding machine technology for rails, and more specifically, to an integrated machine for flash welding and heat treatment of railway turnouts and long rails. Background Technology

[0002] Known mobile flash welding machines suitable for welding long railway rails (greater than 500 meters) on-site are characterized by having an upsetting cylinder and a push-forward cylinder located on opposite sides of the rail web. Because the upsetting shaft of the welding machine is close to the neutral axis of the rail being welded in the vertical direction, it possesses strong structural strength and high upsetting force. Years of use have proven the equipment's reliability. However, due to their early development, these machines did not consider rail welding under narrow gap conditions in turnout sections, and therefore cannot be used in turnout sections. Currently known narrow-jaw turnout flash welding machines, such as Chinese patent application number 202310400005.2, narrow the jaw size to grip the turnout rail, and move the upsetting cylinder above the rail head. This allows for turnout rail welding under certain conditions, but it cannot complete the welding of the AT rail heel end in turnouts. The turnout welding machine described in Chinese patent application number 202411501800.1 features a specially designed jaw and electrode for clamping the AT rail heel end. This type of welding machine can weld rails with narrow gaps in turnouts, and also weld the AT rail heel end. Compared to the former type of turnout welding machine, it can weld all types of turnout rails. However, these two known types of turnout welding machines are limited by their narrow jaw structure, resulting in limited clamping and upsetting forces. They are only suitable for welding turnouts and not for welding long rails. Furthermore, neither of these types of turnout welding machines can perform joint heat treatment. A mobile rail flash welding heat treatment machine that can perform both on-site long rail welding and induction heating of the joint is known in Chinese patent numbers CN107262894B and CN107674961B, commonly known as a two-in-one machine. Its maximum upsetting force is basically the same as the long rail flash welding machine described above, which can meet the needs of long rail welding. Due to structural limitations, this welding machine is also unable to weld rails in narrow gap conditions in turnout areas. Since there are currently no welding machines capable of simultaneously performing flash welding of turnouts, flash welding of long rails, and induction heat treatment of joints, only two types of welding machines can be used: one specifically for flash welding turnouts, and the other specifically for welding long rails. Using these two types of machines simultaneously in the field not only results in extremely high equipment costs but also causes interference between the welding operations. Utility Model Content

[0003] In view of this, the purpose of this utility model is to propose an integrated machine for flash welding and heat treatment of railway turnouts and long rails, so as to simultaneously meet the requirements of on-site flash welding and post-weld heat treatment of turnouts and long rails, reduce equipment costs, and avoid mutual interference of welding operations caused by too many on-site devices.

[0004] Based on the above objectives, this utility model provides an integrated machine for flash welding and heat treatment of railway turnouts and long rails, including an upsetting mechanism, a normalizing heat treatment mechanism for normalizing the weld joint formed after welding a first rail and a second rail, a controller, and a moving frame and a stationary frame arranged opposite to each other. The moving frame is equipped with a first clamping mechanism for clamping the first rail, and the stationary frame is equipped with a second clamping mechanism for clamping the second rail. The upsetting mechanism includes an upsetting cylinder and an upsetting shaft. The upsetting cylinder includes an upsetting cylinder body and an upsetting piston rod drivenly connected to the cylinder body. The cylinder body is mounted on the stationary frame on the side away from the moving frame. The piston rod is slidably mounted on the stationary frame, and its extension path is parallel to the length direction of the first rail. One end of the upsetting shaft is mounted on the moving frame on the side near the stationary frame, and the other end is mounted on... On the upsetting piston rod, the extension and retraction of the upsetting piston rod drives the upsetting shaft and the moving frame to reciprocate; the normalizing heat treatment mechanism is disposed between the moving frame and the stationary frame, and can slide up and down in a direction perpendicular to the welded joint; the first clamping mechanism includes a first clamp and a second clamp disposed opposite to each other for clamping the first rail; the second clamping mechanism includes a third clamp and a fourth clamp disposed opposite to each other for clamping the second rail; the first clamp is equipped with a detachable first electrode for adapting to the narrow spacing rails or AT rail heel end in the turnout section; the second clamp is equipped with a detachable second electrode that is paired with and clamps the first electrode; the third clamp is equipped with a first rail web clamping electrode; and the fourth clamp is equipped with a second rail web clamping electrode that is paired with and clamps the first rail web clamping electrode; the controller is communicatively connected to both the normalizing heat treatment mechanism and the upsetting mechanism.

[0005] Optionally, the first clamp includes a first lower jaw, the width of the first lower jaw along the length direction of the first rail is greater than or equal to 500 mm, and the jaw thickness of the first lower jaw is 150 mm; the width of the second lower jaw along the length direction of the first rail is greater than or equal to 500 mm, and the jaw thickness of the second lower jaw is 150 mm.

[0006] Optionally, the first clamp further includes a first upper side plate, a first middle side plate, and a first bottom side plate, wherein the first upper side plate, the first middle side plate, and the first bottom side plate are arranged sequentially from top to bottom and their dimensions increase sequentially from top to bottom along the length of the first rail, and the first lower jaw is located below the first bottom side plate; the second clamp further includes a second upper side plate, a second middle side plate, and a second bottom side plate, wherein the second upper side plate, the second middle side plate, and the second bottom side plate are arranged sequentially from top to bottom and their dimensions increase sequentially from top to bottom along the length of the first rail, and the second lower jaw is located below the second bottom side plate.

[0007] Optionally, the first upper side plate, the first middle side plate, the first bottom side plate, and the first lower jaw are integrally formed, and the second upper side plate, the second middle side plate, the second bottom side plate, and the second lower jaw are integrally formed.

[0008] Optionally, it also includes a lifting shaft, a lifting eye cylinder, and a wire rope. The normalizing heat treatment mechanism includes an upper base, a transformer, and a fifth clamp and a sixth clamp arranged opposite each other. A slider is provided on the side of the stationary frame near the moving frame. A vertical rail is provided on the side of the upper base near the stationary frame, which slides up and down in cooperation with the slider. The fifth clamp and the sixth clamp are both hinged to the upper base. The fifth clamp is provided with a first heating coil for normalizing the welded joint, and the sixth clamp is provided with a second heating coil for normalizing the welded joint. The transformer is mounted on the upper base, and the first heating coil and the second heating coil are both connected to the transformer. The upper base is provided with a first drive mechanism for controlling the fifth clamp to clamp or release the first rail. The upper base is also provided with a control mechanism. The second drive mechanism controls the sixth clamp to grip or release the second rail. The lifting ring cylinder includes a drive cylinder body and a telescopic piston rod driven by the drive cylinder body. The lifting shaft includes a first pulley. The telescopic end of the telescopic piston rod is provided with a second pulley. One end of the wire rope is rotated 90 degrees by the first pulley and 180 degrees by the second pulley in the horizontal direction before being fixed on the drive cylinder body. The other end of the wire rope is suspended on the upper base. The drive cylinder body is fixed on the lifting shaft. The extension and retraction of the telescopic piston rod drives the wire rope and the normalizing heat treatment mechanism to slide up and down along the vertical rail. The controller is communicatively connected to the lifting ring cylinder, the transformer, the first heating coil, the second heating coil, the first drive mechanism, the second drive mechanism, the fifth clamp, and the sixth clamp.

[0009] Optionally, the first drive mechanism is a first hydraulic cylinder, and the second drive mechanism is a second hydraulic cylinder.

[0010] Optionally, the normalizing heat treatment mechanism further includes a cooling mechanism for cooling the welded joint, and the controller is communicatively connected to the cooling mechanism.

[0011] Optionally, the cooling mechanism includes a first cooling water pipe and a second cooling water pipe. The first cooling water pipe is disposed on the fifth clamp, and the second cooling water pipe is disposed on the sixth clamp. Both the first cooling water pipe and the second cooling water pipe are used to cool the transformer, the first heating coil, the second heating coil, the first adapter electrode, the second adapter electrode, the first rail clamping electrode, and the second rail clamping electrode.

[0012] Optionally, the cooling mechanism further includes a first air jet pipe and a second air jet pipe, the first air jet pipe being disposed on the fifth clamp and the second air jet pipe being disposed on the sixth clamp, both the first air jet pipe and the second air jet pipe being used to cool the welded joint by spraying air.

[0013] Optionally, there are two upsetting mechanisms, which are respectively located at both ends of the stationary frame and on both sides of the second rail.

[0014] Optionally, it also includes two auxiliary mechanisms, each including an auxiliary shaft and a sleeve used in conjunction with the auxiliary shaft. The auxiliary shaft is mounted on the moving frame near the stationary frame, and the moving frame is slidably disposed along the axial direction of the auxiliary shaft. The sleeve is mounted on the stationary frame near the moving frame, and the auxiliary shaft is slidably disposed within the sleeve. The two auxiliary shafts are respectively disposed above the two upsetting shafts.

[0015] Optionally, it also includes a pushing mechanism, which includes a pushing cylinder and a pushing blade. The pushing cylinder includes a pushing cylinder body and a pushing piston rod drivenly connected to the pushing cylinder body. The pushing cylinder body is installed on the stationary frame on the side away from the moving frame. The pushing piston rod is slidably disposed on the stationary frame. The extension and retraction path of the pushing piston rod is parallel to the length direction of the first rail. The pushing blade is installed on the pushing piston rod at the end away from the pushing cylinder body. The pushing blade is located between the stationary frame and the moving frame.

[0016] Optionally, there are two pushing mechanisms, which are located on both sides of the second rail.

[0017] This utility model provides an integrated machine for flash welding and heat treatment of railway turnouts and long rails. It includes a forging mechanism, a normalizing heat treatment mechanism, a controller, and opposing moving and stationary frames. First, the first rail is clamped by a first clamp and a second clamp, while the second rail is clamped by a third clamp and a fourth clamp. Then, flash welding is performed on the first and second rails using a forging cylinder. The first and second rails can be ordinary rails welded together, or ordinary rails welded to the heel of an AT rail. For welding narrow-spacing rails between ordinary rails and turnout sections, or the heel of ordinary rails welded to AT rails, the first electrode on the first clamp and the second electrode on the second clamp adapted to the first electrode can be replaced to meet the requirements of the turnout section. The clamping and welding of the heel ends of narrow-pitch rails or AT rails, with the first and second rails welded together to form a welded joint; finally, the normalizing heat treatment mechanism is slid to the welded joint to perform normalizing heat treatment, thus realizing the integrated function of the welding machine for flash welding of turnouts and long rails and normalizing heat treatment of welded joints, meeting the usage requirements of more occasions, improving the applicability of the equipment, and also improving the working efficiency of the equipment. It avoids the current limitation that only turnout flash welding machines and long rail welding machines can be used separately. It has an integrated equipment that can simultaneously meet the on-site flash welding and post-weld heat treatment of turnouts and long rails, reducing equipment costs and avoiding mutual interference of welding operations caused by too many on-site equipment. Attached Figure Description

[0018] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, which will help to understand the purpose and advantages of this utility model, wherein:

[0019] Figure 1 This is a schematic diagram of the integrated flash welding and heat treatment machine for railway turnouts and long steel rails according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the first clamp in a railway turnout and long rail flash welding and heat treatment integrated machine according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the normalizing heat treatment mechanism in an integrated flash welding and heat treatment machine for railway turnouts and long rails according to an embodiment of the present invention.

[0022] Figure 4 This is another view of an integrated machine for flash welding and heat treatment of railway turnouts and long rails, according to an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1: Upsetting mechanism; 2: Normalizing heat treatment mechanism; 3: Moving frame; 4: Stationary frame; 5: First clamping mechanism; 6: Second clamping mechanism; 7: Upsetting cylinder; 8: Upsetting shaft; 9: First lower jaw; 10: First side upper plate; 11: First side middle plate; 12: First side bottom plate; 13: Upper base; 14: Transformer; 15: Fifth clamp; 16: Sixth clamp; 17: Vertical rail; 18: First heating coil; 19: Second heating coil; 20: First drive mechanism; 21: Second drive mechanism; 22: First cooling water pipe; 23: Second cooling water pipe; 24: First air spray pipe; 25: Second air spray pipe; 26: Auxiliary shaft; 27: Pushing mechanism; 28: First rail; 29: Second rail; 30: First hydraulic cylinder; 31: Wire rope; 32: Lifting ring cylinder; 33: Lifting shaft. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0026] like Figure 1 and Figure 2As shown, the integrated machine for flash welding and heat treatment of railway turnouts and long rails provided by this utility model includes a forging mechanism 1, a normalizing heat treatment mechanism 2 for normalizing the weld joint formed after welding the first rail 28 and the second rail 29, a controller, a moving frame 3 and a stationary frame 4 arranged opposite to each other. The moving frame 3 is equipped with a first clamping mechanism 5 for clamping the first rail 28, and the stationary frame 4 is equipped with a second clamping mechanism 6 for clamping the second rail 29. The forging mechanism 1 includes a forging cylinder 7 and a forging shaft 8. The forging cylinder 7 includes a forging cylinder body and a forging piston rod drivenly connected to the forging cylinder body. The forging cylinder body is installed on the stationary frame 4 on the side away from the moving frame 3. The forging piston rod is slidably mounted on the stationary frame 4, and the extension and retraction path of the forging piston rod is parallel to the length direction of the first rail 28. One end of the forging shaft 8 is installed on the moving frame 3 on the side close to the stationary frame 4. The other end of shaft 8 is mounted on the upsetting piston rod. The extension and retraction of the upsetting piston rod drives the upsetting shaft 8 and the moving frame 3 to reciprocate. The normalizing heat treatment mechanism 2 is located between the moving frame 3 and the stationary frame 4, and can slide up and down in a direction perpendicular to the weld joint. The first clamping mechanism 5 includes a first clamp and a second clamp arranged opposite to each other for clamping the first rail 28. The second clamping mechanism 6 includes a third clamp and a fourth clamp arranged opposite to each other for clamping the second rail 29. The first clamp is equipped with a detachable first electrode for adapting to the narrow-spacing rails or AT rail heel end in the turnout section. The second clamp is equipped with a detachable second electrode that is paired with and clamped to the first electrode. The third clamp is equipped with a first rail web clamping electrode. The fourth clamp is equipped with a second rail web clamping electrode that is paired with and clamped to the first rail web clamping electrode. The controller is communicatively connected to the normalizing heat treatment mechanism 2 and the upsetting mechanism 1.

[0027] This utility model provides an integrated machine for flash welding and heat treatment of railway turnouts and long rails. It includes a forging mechanism 1, a normalizing heat treatment mechanism 2, a controller, and opposing moving frames 3 and stationary frames 4. First, the first rail 28 is clamped by a first clamp and a second clamp, and the second rail 29 is clamped by a third clamp and a fourth clamp. Then, flash welding is performed on the first rail 28 and the second rail 29 using a forging cylinder 7. The first rail 28 and the second rail 29 can be welded together with ordinary rails or between the heel ends of ordinary rails and AT rails. For welding narrow-spacing rails between ordinary rails and turnout sections or between the heel ends of ordinary rails and AT rails, the welding can be achieved by replacing the first electrode on the first clamp and the second electrode on the second clamp that is compatible with the first electrode. This machine is designed to perform clamping and welding of the heel ends of narrow-spacing rails or AT rails in turnout sections. After welding the first rail 28 and the second rail 29, a welded joint is formed. Finally, the normalizing heat treatment mechanism 2 is slid to the welded joint to perform normalizing heat treatment. This integrates the functions of flash welding of turnouts and long rails and normalizing heat treatment of welded joints, meeting the requirements of more applications, improving the applicability of the equipment, and increasing the working efficiency of the equipment. It avoids the current limitation that only turnout flash welding machines and long rail welding machines can be used separately. It is an integrated device that can simultaneously meet the requirements of on-site flash welding of turnouts and long rails and post-weld heat treatment, reducing equipment costs and avoiding mutual interference of welding operations caused by too many on-site devices.

[0028] like Figure 2 As shown, the first clamp includes a first lower jaw 9, the jaw width of which along the length of the first rail 28 is greater than or equal to 500mm, and the jaw thickness is 150mm. Similarly, the second lower jaw has a jaw width of greater than or equal to 500mm along the length of the first rail 28, and a jaw thickness of 150mm. In this embodiment, while meeting the requirement of narrow space for turnout clamping, the contact area between the first lower jaw 9 and the rail is increased, reducing the principal stress at the upper end of the jaw of the first lower clamp, and achieving a larger clamping force on the rail. Likewise, the jaw width of the second lower jaw is also greater than or equal to 500mm, and the jaw thickness is 150mm. This also meets the requirement of narrow space for turnout clamping, increases the contact area between the first lower jaw 9 and the rail, reduces the principal stress at the upper end of the jaw of the first lower clamp, and achieves a larger clamping force on the rail.

[0029] like Figure 2As shown, the first clamp also includes a first upper side plate 10, a first middle side plate 11, and a first bottom side plate 12. The first upper side plate 10, the first middle side plate 11, and the first bottom side plate 12 are arranged sequentially from top to bottom, and their dimensions increase sequentially from top to bottom along the length direction of the first rail 28. The first lower jaw 9 is located below the first bottom side plate 12. The second clamp also includes a second upper side plate, a second middle side plate, and a second bottom side plate. The second upper side plate, the second middle side plate, and the second bottom side plate are arranged sequentially from top to bottom, and their dimensions increase sequentially from top to bottom along the length direction of the first rail 28. The second lower jaw is located below the second bottom side plate. In this embodiment, by increasing the dimensions of the first upper side plate 10, the first middle side plate 11, and the first bottom side plate 12 along the rail axis from top to bottom in a gradient manner, the structural stability of the first clamp is ensured. Similarly, by increasing the dimensions of the second upper side plate, the second middle side plate, and the first bottom side plate along the rail axis from top to bottom in a gradient manner, the structural stability of the second clamp is ensured.

[0030] In one embodiment of this utility model, the first side upper plate 10, the first side middle plate 11, the first side bottom plate 12 and the first lower jaw 9 are integrally formed, and the second side upper plate, the second side middle plate, the second side bottom plate and the second lower jaw are integrally formed. The integrally formed first clamp has stable and reliable overall strength, ensuring the structural strength of the first clamp; the integrally formed second clamp has stable and reliable overall strength, ensuring the structural strength of the second clamp.

[0031] like Figure 3As shown, it also includes a lifting shaft 33, a lifting ring cylinder 32, and a wire rope 31. The normalizing heat treatment mechanism 2 includes an upper base 13, a transformer 14, and a fifth clamp 15 and a sixth clamp 16 arranged opposite to each other. A slider is provided on the side of the stationary frame 4 near the moving frame 3. A vertical rail 17 that slides up and down in cooperation with the slider is provided on the side of the upper base 13 near the stationary frame 4. The fifth clamp 15 and the sixth clamp 16 are both hinged to the upper base 13. The fifth clamp 15 is provided with a first heating coil 18 for normalizing the welded joint, and the sixth clamp 16 is provided with a second heating coil 19 for normalizing the welded joint. The transformer 14 is mounted on the upper base 13. The first heating coil 18 and the second heating coil 19 are both connected to the transformer 14. The upper base 13 is provided with a first drive mechanism 2 for controlling the fifth clamp 15 to clamp or release the first rail 28. 0. The upper base 13 is also provided with a second drive mechanism 21 for controlling the sixth clamp 16 to clamp or release the second rail 29. The lifting ring cylinder 32 includes a drive cylinder body and a telescopic piston rod that is driven and connected to the drive cylinder body. The lifting shaft 33 includes a first pulley. The telescopic end of the telescopic piston rod is provided with a second pulley. One end of the wire rope 31 is rotated 90 degrees through the first pulley and then rotated 180 degrees horizontally through the second pulley before being fixed to the drive cylinder body. The other end of the wire rope 31 is suspended on the upper base 13. The drive cylinder body is fixed on the lifting shaft 33. The extension and retraction of the telescopic piston rod drives the wire rope 31 and the normalizing heat treatment mechanism 2 to slide up and down along the vertical track 17. The controller is communicatively connected to the lifting ring cylinder 32, the transformer 14, the first heating coil 18, the second heating coil 19, the first drive mechanism 20, the second drive mechanism 21, the fifth clamp 15, and the sixth clamp 16. In this embodiment, the transformer 14 can be a medium-frequency transformer; the lifting eye cylinder 32 and the wire rope 31 enable the normalizing heat treatment mechanism 2 to slide up and down more easily, facilitating normalizing heat treatment of the welded joint in a clamped state; in order to achieve post-weld normalizing heat treatment of the welded joint in a clamped state, the central axis between the moving frame 3 and the stationary frame 4 is eliminated, allowing the normalizing heat treatment mechanism 2 to move up and down along the vertical track 17. The fifth clamp 15 and the sixth clamp 16 can open and close. When open, they can cross the cross-section of the rail, and when closed, they can cause the first heating coil 18 and the second heating coil 19 to surround each other. The welded joint forms a closed circuit with the transformer 14. The first heating coil 18 and the second heating coil 19 are clamped by the first driving mechanism 20 and the second driving mechanism 21 respectively as the fifth clamp 15 and the sixth clamp 16 open and close. When welding the rail or performing non-normalizing heat treatment, the normalizing heat treatment mechanism 2 rises above the top of the rail. When the welded joint needs to be cooled by air spray or normalized heat treatment, the first heating coil 18 and the second heating coil 19 open and descend together with the transformer 14 to the bottom of the rail. Then, the first heating coil 18 and the second heating coil 19 close and form a secondary circuit with the transformer 14.

[0032] In one embodiment of this utility model, the first drive mechanism 20 is a first hydraulic cylinder 30, and the second drive mechanism 21 is a second hydraulic cylinder. The hydraulic oil is easy to operate and easy to purchase, which improves the ease of operation of the integrated machine for flash welding and heat treatment of railway turnouts and long rails, and reduces production costs.

[0033] In one embodiment of this utility model, the normalizing heat treatment mechanism 2 further includes a cooling mechanism for cooling the welded joint. The controller is connected to the cooling mechanism, which improves the ease of use of the integrated machine for flash welding and heat treatment of railway turnouts and long rails.

[0034] like Figure 1 As shown, the cooling mechanism includes a first cooling water pipe 22 and a second cooling water pipe 23. The first cooling water pipe 22 is mounted on the fifth clamp 15, and the second cooling water pipe 23 is mounted on the sixth clamp 16. Both the first cooling water pipe 22 and the second cooling water pipe 23 are used to cool the transformer 14, the first heating coil 18, the second heating coil 19, the first adapter electrode, the second adapter electrode, the first rail clamping electrode, and the second rail clamping electrode. In this embodiment, the cooling water pipes are easy to operate, improving the usability of the integrated machine for flash welding and heat treatment of railway turnouts and long rails.

[0035] like Figure 1 As shown, the cooling mechanism also includes a first air jet pipe 24 and a second air jet pipe 25. The first air jet pipe 24 is mounted on the fifth clamp 15, and the second air jet pipe 25 is mounted on the sixth clamp 16. Both the first air jet pipe 24 and the second air jet pipe 25 are used to cool the welded joint with air jets. In this embodiment, both the first air jet pipe 24 and the second air jet pipe 25 can cool the welded joint in a timely manner, improving the welding quality of the integrated machine for flash welding and heat treatment of railway turnouts and long rails.

[0036] In one embodiment of this utility model, there are two upsetting mechanisms 1, which are respectively set at both ends of the stationary frame 4 and located on both sides of the second rail 29. The two upsetting mechanisms 1 can increase the upsetting strength and ensure that the force is more uniform during upsetting, thereby improving the structural stability of the integrated machine for flash welding and heat treatment of railway turnouts and long rails.

[0037] like Figure 1As shown, the system also includes two auxiliary mechanisms. Each auxiliary mechanism includes an auxiliary shaft 26 and a sleeve that is used in conjunction with the auxiliary shaft 26. The auxiliary shaft 26 is mounted on the moving frame 3 near the stationary frame 4. The moving frame 3 is slidably disposed along the axial direction of the auxiliary shaft 26. The sleeve is mounted on the stationary frame 4 near the moving frame 3. The auxiliary shaft 26 is slidably disposed within the sleeve. The two auxiliary shafts 26 are respectively disposed above the two upsetting shafts 8. In this embodiment, the auxiliary mechanisms can counteract the additional bending moment caused by the upsetting cylinder 7 during upsetting, thereby improving the structural stability of the integrated machine for flash welding and heat treatment of railway turnouts and long rails.

[0038] like Figure 1 As shown, the system also includes a push-out mechanism 27, which comprises a push-out cylinder and a push-out cutter. The push-out cylinder includes a push-out cylinder body and a push-out piston rod drivenly connected to the cylinder body. The cylinder body is mounted on the stationary frame 4 on the side away from the moving frame 3. The piston rod is slidably mounted on the stationary frame 4, and its extension path is parallel to the length direction of the first rail 28. The push-out cutter is mounted on the piston rod at the end away from the cylinder body, and is located between the stationary frame 4 and the moving frame 3. In this embodiment, the push-out mechanism 27 can remove weld beads from the weld joint in a timely manner, improving the welding quality of the integrated flash welding and heat treatment machine for railway turnouts and long rails.

[0039] like Figure 1 As shown, there are two pushing mechanisms 27, which are located on both sides of the second rail 29. In this embodiment, the two pushing mechanisms 27 can increase the pushing speed, and since the two pushing mechanisms 27 are located on both sides of the first rail, the force is more even during pushing, which improves the structural stability of the integrated machine for flash welding and heat treatment of railway turnouts and long rails.

[0040] In one embodiment of this utility model, when the integrated machine for flash welding and heat treatment of railway turnouts and long rails is in use, when welding long rails is required, firstly, the first and second clamps on the first clamping mechanism 5 on the integrated motor frame 3 and the third and fourth clamps on the second clamping mechanism 6 on the stationary frame 4 are all opened, so that the first and second clamps clamp the web of the first rail 28, and the third and fourth clamps clamp the web of the second rail 29, that is, the matching first and second electrodes on the first clamp are clamped to the web of the first rail 28. The first rail web clamping electrode on the third clamp and the second rail web clamping electrode on the fourth clamp clamp the second rail 29 at the rail web, and welding is started until welding is completed automatically. After welding is completed, the push-pull cylinder is controlled to push the push-pull knife to cut through the weld bead, and the push-pull knife is retracted to its original position. At this time, a space with a width greater than the first heating coil 18 and the second heating coil 19 appears between the moving frame 3 and the stationary frame 4, and the weld joint is just located in the middle of the space. The fifth clamp 15 and the sixth clamp 16 are opened and lowered to the bottom of the weld joint. Then the fifth clamp 15 and the sixth clamp 16 are closed. The six clamps 16 close, engaging the first heating coil 18 and the second heating coil 19. The first and second air jets 24 and 25 of the cooling mechanism are then opened to cool the welded joint. Once the welded joint is cooled below the permissible heat treatment temperature, power is applied, causing the first and second heating coils 18 and 19 to heat the welded joint. After normalizing heat treatment, the fifth clamp 15 and the sixth clamp 16 are opened, causing the first and second heating coils 18 and 19 to open as well. The normalizing heat treatment mechanism 2 is then raised above the welded joint. The fifth clamp 15 and the sixth clamp 16 are controlled to close and the first heating coil 18 and the second heating coil 19 are closed. Then, the first clamping mechanism 5 of the moving frame 3 and the second clamping mechanism 6 of the stationary frame 4 are controlled to open, and the integrated machine is lifted to complete the welding and heat treatment of the welded joint. When it is necessary to weld narrow-spacing rails in railway turnout sections, it is only necessary to replace the first electrode on the first clamp and the second electrode on the second clamp with a rail clamping head electrode that is compatible with the narrow-spacing rails in the turnout section, which improves the applicability of the integrated machine for flash welding and heat treatment of railway turnouts and long rails.

[0041] This utility model provides an integrated machine for flash welding and heat treatment of railway turnouts and long rails. It includes a forging mechanism 1, a normalizing heat treatment mechanism 2, a controller, and opposing moving frames 3 and stationary frames 4. First, the first rail 28 is clamped by a first clamp and a second clamp, and the second rail 29 is clamped by a third clamp and a fourth clamp. Then, flash welding is performed on the first rail 28 and the second rail 29 using a forging cylinder 7. The first rail 28 and the second rail 29 can be welded together with ordinary rails or between the heel ends of ordinary rails and AT rails. For welding narrow-spacing rails between ordinary rails and turnout sections or between the heel ends of ordinary rails and AT rails, the welding can be achieved by replacing the first electrode on the first clamp and the second electrode on the second clamp that is compatible with the first electrode. This machine is designed to perform clamping and welding of the heel ends of narrow-spacing rails or AT rails in turnout sections. After welding the first rail 28 and the second rail 29, a welded joint is formed. Finally, the normalizing heat treatment mechanism 2 is slid to the welded joint to perform normalizing heat treatment. This integrates the functions of flash welding of turnouts and long rails and normalizing heat treatment of welded joints, meeting the requirements of more applications, improving the applicability of the equipment, and increasing the working efficiency of the equipment. It avoids the current limitation that only turnout flash welding machines and long rail welding machines can be used separately. It is an integrated device that can simultaneously meet the requirements of on-site flash welding of turnouts and long rails and post-weld heat treatment, reducing equipment costs and avoiding mutual interference of welding operations caused by too many on-site devices.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A machine for flash welding and heat treatment of railway turnouts and long rails, characterized in that, It includes an upsetting mechanism, a normalizing heat treatment mechanism for normalizing the welded joint formed after welding the first and second rails, a controller, and a moving frame and a stationary frame arranged opposite to each other, wherein: The movable frame is provided with a first clamping mechanism for clamping the first rail, and the stationary frame is provided with a second clamping mechanism for clamping the second rail. The upsetting mechanism includes an upsetting cylinder and an upsetting shaft. The upsetting cylinder includes an upsetting cylinder body and an upsetting piston rod drivenly connected to the upsetting cylinder body. The upsetting cylinder body is installed on the stationary frame away from the moving frame. The upsetting piston rod is slidably mounted on the stationary frame. The extension and retraction path of the upsetting piston rod is parallel to the length direction of the first rail. One end of the upsetting shaft is installed on the moving frame near the stationary frame, and the other end of the upsetting shaft is installed on the upsetting piston rod. The extension and retraction of the upsetting piston rod drives the upsetting shaft and the moving frame to reciprocate. The normalizing heat treatment mechanism is disposed between the moving frame and the stationary frame, and can slide up and down in a direction perpendicular to the welded joint. The first clamping mechanism includes a first clamp and a second clamp disposed opposite to each other for clamping the first rail. The second clamping mechanism includes a third clamp and a fourth clamp disposed opposite to each other for clamping the second rail. The first clamp is equipped with a detachable first electrode for adapting to the narrow-spacing rails or AT rail heel end in the turnout section. The second clamp is equipped with a detachable second electrode that is paired with and clamps the first electrode. The third clamp is equipped with a first rail web clamping electrode. The fourth clamp is equipped with a second rail web clamping electrode that is paired with and clamps the first rail web clamping electrode. The controller is communicatively connected to both the normalizing heat treatment mechanism and the upsetting mechanism.

2. The integrated machine for flash welding and heat treatment of railway turnouts and long rails according to claim 1, characterized in that, The first clamp includes a first lower jaw, the width of the first lower jaw along the length direction of the first rail is greater than or equal to 500 mm, and the jaw thickness of the first lower jaw is 150 mm. The width of the second lower jaw along the length direction of the first rail is greater than or equal to 500 mm, and the jaw thickness of the second lower jaw is 150 mm.

3. The integrated machine for flash welding and heat treatment of railway turnouts and long rails according to claim 1, characterized in that, The first clamp further includes a first upper side plate, a first middle side plate, and a first bottom side plate. The first upper side plate, the first middle side plate, and the first bottom side plate are arranged sequentially from top to bottom, and their dimensions increase sequentially from top to bottom along the length of the first rail. The first lower jaw is located below the first bottom side plate. The second clamp further includes a second upper side plate, a second middle side plate, and a second bottom side plate. The second upper side plate, the second middle side plate, and the second bottom side plate are arranged sequentially from top to bottom, and their dimensions increase sequentially from top to bottom along the length of the first rail. The second lower jaw is located below the second bottom side plate.

4. The integrated machine for flash welding and heat treatment of railway turnouts and long rails according to claim 3, characterized in that, The first side upper plate, the first side middle plate, the first side bottom plate and the first lower jaw are integrally formed, and the second side upper plate, the second side middle plate, the second side bottom plate and the second lower jaw are integrally formed.

5. The integrated machine for flash welding and heat treatment of railway turnouts and long rails according to claim 1, characterized in that, It also includes a lifting shaft, a lifting eye cylinder, and a wire rope. The normalizing heat treatment mechanism includes an upper base, a transformer, and a fifth clamp and a sixth clamp arranged opposite each other. A slider is provided on the side of the stationary frame near the moving frame. A vertical rail is provided on the side of the upper base near the stationary frame to slide up and down in cooperation with the slider. The fifth clamp and the sixth clamp are both hinged to the upper base. The fifth clamp is provided with a first heating coil for normalizing the welded joint, and the sixth clamp is provided with a second heating coil for normalizing the welded joint. The transformer is mounted on the upper base, and the first heating coil and the second heating coil are both connected to the transformer. The upper base is provided with a first drive mechanism for controlling the fifth clamp to clamp or release the first rail. The upper base is also provided with a control mechanism for... The sixth clamp is described as a second drive mechanism for clamping or releasing the second rail. The lifting ring cylinder includes a drive cylinder body and a telescopic piston rod drivenly connected to the drive cylinder body. The lifting shaft includes a first pulley. The telescopic end of the telescopic piston rod is provided with a second pulley. One end of the wire rope is rotated 90 degrees through the first pulley and then rotated 180 degrees horizontally through the second pulley before being fixed to the drive cylinder body. The other end of the wire rope is suspended on the upper base. The drive cylinder body is fixed to the lifting shaft. The extension and retraction of the telescopic piston rod drives the wire rope and the normalizing heat treatment mechanism to slide up and down along the vertical rail. The controller is communicatively connected to the lifting ring cylinder, the transformer, the first heating coil, the second heating coil, the first drive mechanism, the second drive mechanism, the fifth clamp, and the sixth clamp.

6. The integrated machine for flash welding and heat treatment of railway turnouts and long rails according to claim 5, characterized in that, The first driving mechanism is a first hydraulic cylinder, and the second driving mechanism is a second hydraulic cylinder.

7. The integrated machine for flash welding and heat treatment of railway turnouts and long rails according to claim 1, characterized in that, The normalizing heat treatment mechanism also includes a cooling mechanism for cooling the welded joint, and the controller is communicatively connected to the cooling mechanism.

8. The integrated machine for flash welding and heat treatment of railway turnouts and long rails according to claim 7, characterized in that, The cooling mechanism includes a first cooling water pipe and a second cooling water pipe. The first cooling water pipe is disposed on the fifth clamp, and the second cooling water pipe is disposed on the sixth clamp. Both the first cooling water pipe and the second cooling water pipe are used to cool the transformer, the first heating coil, the second heating coil, the first adapter electrode, the second adapter electrode, the first rail clamping electrode, and the second rail clamping electrode.

9. The integrated machine for flash welding and heat treatment of railway turnouts and long rails according to claim 7, characterized in that, The cooling mechanism further includes a first air jet pipe and a second air jet pipe. The first air jet pipe is disposed on the fifth clamp, and the second air jet pipe is disposed on the sixth clamp. Both the first air jet pipe and the second air jet pipe are used to cool the welded joint by spraying air.

10. The integrated machine for flash welding and heat treatment of railway turnouts and long rails according to claim 1, characterized in that, There are two upsetting mechanisms, which are respectively located at both ends of the stationary frame and on both sides of the second rail.

11. The integrated machine for flash welding and heat treatment of railway turnouts and long rails according to claim 10, characterized in that, It also includes two auxiliary mechanisms, each comprising an auxiliary shaft and a sleeve used in conjunction with the auxiliary shaft. The auxiliary shaft is mounted on the moving frame near the stationary frame, and the moving frame is slidably disposed along the axial direction of the auxiliary shaft. The sleeve is mounted on the stationary frame near the moving frame, and the auxiliary shaft is slidably disposed within the sleeve. The two auxiliary shafts are respectively disposed above the two upsetting shafts.

12. The integrated machine for flash welding and heat treatment of railway turnouts and long rails according to claim 1, characterized in that, It also includes a pushing mechanism, which includes a pushing cylinder and a pushing knife. The pushing cylinder includes a pushing cylinder body and a pushing piston rod drivenly connected to the pushing cylinder body. The pushing cylinder body is installed on the stationary frame on the side away from the moving frame. The pushing piston rod is slidably disposed on the stationary frame. The extension and retraction path of the pushing piston rod is parallel to the length direction of the first rail. The pushing knife is installed on the pushing piston rod at the end away from the pushing cylinder body. The pushing knife is located between the stationary frame and the moving frame.

13. The integrated machine for flash welding and heat treatment of railway turnouts and long rails according to claim 12, characterized in that, There are two pushing mechanisms, which are located on both sides of the second rail.

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