A mobile rail welding apparatus and a welding method thereof

Abstract

The application discloses a mobile rail welding device and a welding method thereof, and relates to the technical field of rail welding devices.The mobile rail welding device comprises rails and air pressure welding devices installed on the rails.The air pressure welding devices comprise two groups of device bodies installed on the outer walls of the rails, and the interiors of the device bodies are provided with oxygen cavities and acetylene cavities.The oxygen cavities and the acetylene cavities are distributed from top to bottom, and the outer walls of the device bodies are provided with electric control ignition components which are in communication with the oxygen cavities and the acetylene cavities.The bottom ends of the electric control ignition components are provided with fire outlets with downward openings.The outer walls of one group of the device bodies are provided with hydraulic cylinders whose output ends are connected to the outer walls of the second group of the device bodies.The cutting assembly and the polishing assembly are arranged, the air pressure welding devices do not need to be disassembled and assembled, the operation steps are reduced, the burden of workers is reduced, and the working efficiency of the air pressure welding devices and the welding progress of the rails as a whole are improved.

Description

Technical Field

[0001] This invention relates to the field of rail welding equipment technology, specifically to a mobile rail welding device and its welding method. Background Technology

[0002] Rail welding technology is essential and extremely important in railway and rail transport. It is responsible for rigidly connecting two rails to achieve rail continuity, allowing railcars to run. There are currently two methods of rail welding. One method uses the high temperature generated by the combustion of thermite to melt the steel blocks used for welding, allowing the molten steel to cover the ends of the two sets of rails. After cooling, the excess material is ground off. The other method is gas pressure welding. Gas pressure welding is a process that uses a mixture of oxygen and acetylene gas, which is ignited and used to heat the steel bar joint. When the temperature reaches a plastic state, pressure is applied to press the steel bar joint together.

[0003] Currently, in practical use, it has been found that gas pressure welding equipment needs to be constantly repositioned for welding rails, as the welding process involves multiple locations. However, the gas pressure welding method also results in excess material at the ends of the welded rails, which directly hinders the continued movement of the gas pressure welding equipment. In other words, the gas pressure welding equipment cannot move continuously on the rails and must be constantly disassembled and reassembled, causing numerous inconveniences. Most importantly, it directly reduces the efficiency of rail welding, affecting the overall progress of the rail welding process. Therefore, in order to enable the gas pressure welding equipment to move continuously on the rails during working hours, we propose a mobile rail welding equipment. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a mobile rail welding equipment and its welding method to solve the technical problems mentioned in the background.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a mobile rail welding equipment, comprising a rail and a gas pressure welding device installed on the rail. The gas pressure welding device includes a crimping machine and two sets of equipment bodies installed on the outer wall of the rail. Each equipment body has an oxygen chamber and an acetylene chamber located inside, distributed from top to bottom. An electrically controlled ignition component, communicating with both the oxygen and acetylene chambers, is installed on the outer wall of the equipment body. The bottom end of the electrically controlled ignition component has a downward-facing flame outlet. A hydraulic cylinder with its output end connected to the outer wall of the second set of equipment bodies is installed on the outer wall of the first set of equipment bodies. A processing chamber is located inside the equipment body, and a cutting assembly is installed inside the processing chamber. An air-cooling assembly is installed above the cutting assembly, and a grinding assembly is installed below the air-cooling assembly on one side of the cutting assembly.

[0006] By adopting the above technical solution, the welding allowance at the weld site is processed, so that the welding allowance does not affect the movement of the gas pressure welding equipment. Therefore, after the gas pressure welding equipment completes welding at one position, it can quickly move to the next station to continue welding operations, which greatly improves the welding efficiency and progress, while also reducing the burden on workers and avoiding unnecessary trouble caused by frequent disassembly and assembly of the gas pressure welding equipment.

[0007] The present invention is further configured such that the cutting assembly includes a cutting disc installed inside the processing chamber, and a first connecting shaft is fixedly connected to the top end of the cutting disc, a first gear disc is fixedly connected to the top end of the first connecting shaft, the outer wall of the first gear disc is provided with a driven tooth wall, and a drive gear is meshed with one side of the driven tooth wall, and a drive motor is installed at the end of the drive gear.

[0008] By adopting the above technical solution, the welding allowance can be cut off.

[0009] The invention is further configured such that the air-cooling assembly includes a second gear disk mounted on one side of the first gear disk, and the second gear disk is connected to the first gear disk via a gear belt. Blades are mounted on the top of the second gear disk, and a wind box is fitted around the outer side of the blades. The air inlet of the wind box is located at the bottom of the wind box, and the air outlet of the wind box is located at the top of the wind box. An upwardly extending connecting pipe is connected to the air outlet of the wind box, and a water tank is disposed outside the connecting pipe. The water tank is filled with cooling water, and the connecting pipe is immersed in the cooling water in the water tank. One end of the connecting pipe is connected to the air outlet of the wind box. The port is connected, and a rotary joint is installed at the other end of the connecting pipe. The rotary joint is installed at the top of the first connecting shaft, and an air passage is opened inside the first connecting shaft. The bottom end of the air passage extends into the interior of the cutting disc, and an air chamber communicating with the air passage is opened inside the cutting disc. Multiple air outlets communicating with the air chamber are connected to the bottom end of the air chamber, and the air outlets are evenly distributed in a ring at the bottom end of the cutting disc. Air pipes extending to both sides are connected to both sides of the connecting pipe, and the air pipes are all located below the water tank. Multiple air nozzles evenly distributed at the top end of the air pipe are installed, and the air nozzles are communicating with the interior of the air pipe.

[0010] By adopting the above technical solution, the air-cooled component will operate simultaneously with the cutting operation, thereby cooling the welding allowance and the cutting disc, and achieving a good cutting effect.

[0011] The invention is further configured such that the grinding assembly includes a grinding wheel mounted on one side of the cutting disc, and the bottom end of the grinding wheel is connected to a second connecting shaft. The top end of the second connecting shaft is fixedly connected to a third gear disk, and the third gear disk is connected to the first gear disk via a gear belt drive. The water outlet assembly is mounted on one side of the grinding wheel and located below the water tank. The water outlet assembly includes a water outlet pipe communicating with the water tank, and a force-bearing block is slidably passed through the wall of the water outlet pipe. A pressing block is fixed to the end face of the grinding wheel at the same horizontal height as the force-bearing block, and the outer walls of the pressing block and the force-bearing block are both arc-shaped. A partition is fixed inside the water outlet pipe, and a water collection cavity is opened above the partition and a water outlet cavity is opened below it. A first drain outlet is opened inside the partition, and a second drain outlet with an inner diameter larger than the inner diameter of the first drain outlet is opened inside the force-bearing block. A return spring mounted on the inner wall of the water outlet pipe is fixedly connected to the outer wall of the force-bearing block.

[0012] By adopting the above technical solution, the water can be dispensed in a jog-like manner by rotating the grinding wheel. This not only prevents the problem of excessive water output but also prevents the waste of resources caused by continuous water output. At the same time, it also assists in grinding, achieving multiple beneficial effects such as cooling and reducing wear.

[0013] A welding method using mobile rail welding equipment includes the following steps:

[0014] S1. The rail is clamped and limited by the crimping machine of the gas pressure welding equipment, and the gas pressure welding equipment is installed.

[0015] S2. Activate the electronic ignition component, enabling it to ignite acetylene with the aid of oxygen, thereby ejecting a high-temperature flame from the nozzle to melt the end of the rail to be welded.

[0016] S3. Through the cooperation of the crimping machine and the hydraulic cylinder, the molten ends of the two sets of rails move towards each other and are squeezed, thereby completing the welding of the rails.

[0017] S4. By combining the cutting component, the air-cooling component, and the grinding component, the excess material at the rail welding joint is processed, allowing the gas pressure welding equipment to continue moving along the rail to the next work location without disassembly.

[0018] In summary, the present invention has the following main beneficial effects:

[0019] 1. This invention, by setting up a cutting component and a grinding component, allows for the removal of excess material on the end face of the rail after the gas pressure welding equipment completes the welding process. The drive motor is then activated, causing the drive gear to rotate. This drive gear, through the action of the driven tooth wall, drives the first gear disc to rotate. The rotation of the first gear disc, via the first connecting shaft, drives the cutting disc to rotate. The gas pressure welding equipment is then started and slowly moved, causing the cutting disc to follow. When the cutting disc reaches contact with the excess material, it cuts it. Simultaneously, the rotation of the first gear disc, through the gear belt, drives the third gear disc to rotate. The third gear disc, via the second connecting shaft, drives the grinding wheel to rotate. The grinding wheel then grinds the excess material, further adjusting the flatness of the welded area. The gas pressure welding equipment can then directly pass through the welded area and move to the next work position without needing to disassemble or reassemble the equipment. This reduces operational steps, lightens the burden on workers, and improves the efficiency of the gas pressure welding equipment and the overall welding progress of the rail.

[0020] 2. This invention, by incorporating an air-cooling component and a water outlet component, allows the first gear disc to drive the second gear disc via a gear belt while the cutting disc is operating. The rotation of the second gear disc directly drives the blades to rotate, drawing in air which is then introduced into the connecting pipe through the air outlet. The gas in the connecting pipe is cooled by the water tank and enters the air passage through a rotary joint. Furthermore, the cooled air in the air passage enters the air chamber and is ejected from the bottom of the cutting disc through multiple air outlets, achieving a cooling effect on the cutting disc during the cutting process. It also cools the welded and non-welded areas of the rail, effectively assisting the cutting disc and improving cutting quality and efficiency. Additionally, a portion of the gas in the connecting pipe flows out into the air pipe. The gas is sprayed out through the air nozzle to the outer wall of the water tank, achieving heat dissipation and ensuring the cooling effect of the water tank. This further assists the operation of the air-cooling components. In addition, the rotation of the grinding wheel will drive the squeezing block on its end face to rotate. When the squeezing block rotates to contact the force block, it will squeeze the force block, causing the force block to squeeze the return spring and move into the water outlet pipe. At this time, the second drain in the force block will move to connect with the first drain. Therefore, the water in the water collection chamber will flow into the water outlet chamber through the first and second drains and flow out to the grinding area, assisting the grinding wheel in the grinding operation. This not only achieves the cooling effect of the grinding wheel and improves the grinding quality, but also effectively prevents excessive wear of the grinding wheel and extends its service life. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2This is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 This is a schematic diagram of a partial internal structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the drive structure connection of the present invention.

[0025] Figure 5 This is a schematic diagram of the internal structure of the cutting disc of the present invention;

[0026] Figure 6 This is a schematic diagram of the end structure of the cutting disc of the present invention;

[0027] Figure 7 This is a schematic diagram of the end face structure of the water outlet component of the present invention.

[0028] In the diagram: 1. Rail; 2. Gas pressure welding equipment; 201. Equipment body; 202. Oxygen chamber; 203. Acetylene chamber; 204. Hydraulic cylinder; 205. Electrically controlled ignition component; 206. Flame outlet; 207. Processing chamber; 3. Cutting assembly; 301. Cutting disc; 302. First connecting shaft; 303. First gear disc; 304. Driven gear wall; 305. Drive gear; 306. Drive motor; 4. Air-cooled assembly; 401. Second gear disc; 402. Blade; 403. Bellows; 404. Connecting... 405. Connector; 406. Rotary joint; 407. Water tank; 408. Air pipe; 409. Air outlet; 410. Air chamber; 411. Air outlet; 5. Grinding assembly; 501. Grinding wheel; 502. Second connecting shaft; 503. Third gear disc; 6. Water outlet assembly; 601. Squeezing block; 602. Force-bearing block; 603. Water outlet pipe; 604. Partition plate; 605. First drain outlet; 606. Second drain outlet; 607. Return spring; 608. Water collection chamber; 609. Water outlet chamber. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The embodiments of the present invention will now be described.

[0031] A mobile rail welding device and its welding method, such as Figure 1-7As shown, the device includes a steel rail 1 and a gas pressure welding device 2 installed on the steel rail 1. The gas pressure welding device 2 includes a crimping machine and two sets of equipment bodies 201 installed on the outer wall of the steel rail 1. The equipment body 201 has an oxygen chamber 202 and an acetylene chamber 203 inside, which are distributed from top to bottom. The outer wall of the equipment body 201 is equipped with an electrically controlled ignition component 205 that communicates with both the oxygen chamber 202 and the acetylene chamber 203. The bottom end of the electrically controlled ignition component 205 has a downward-facing flame outlet 206. The outer wall of the first set of equipment bodies 201 is equipped with a hydraulic cylinder 204 whose output end is connected to the outer wall of the second set of equipment bodies 201. The equipment body 201 has a processing chamber 207 inside.

[0032] Please see Figure 2-4 The processing chamber 207 is equipped with a cutting component 3. The cutting component 3 can remove the welding allowance through the action of the cutting disc 301, reducing the steps and time of subsequent allowance processing. This not only improves welding efficiency but also effectively assists in the movement of the gas pressure welding equipment 2.

[0033] Specifically, the cutting assembly 3 includes a cutting disc 301 installed inside the processing chamber 207, and a first connecting shaft 302 is fixedly connected to the top of the cutting disc 301. A first gear disc 303 is fixedly connected to the top of the first connecting shaft 302. A driven tooth wall 304 is provided on the outer wall of the first gear disc 303, and a drive gear 305 is meshed on one side of the driven tooth wall 304. A drive motor 306 is installed at the end of the drive gear 305.

[0034] Please see Figure 3 , Figure 5 and Figure 6 Above the cutting component 3, there is an air-cooling component 4. The air-cooling component 4 can cool down the welding allowance and the rail 1 during the cutting process through the air-cooling effect, so as to better cut the allowance and accelerate the cooling and forming speed of the weld of the rail 1, thus speeding up the welding process.

[0035] Specifically, the air-cooled assembly 4 includes a second gear disk 401 installed on one side of the first gear disk 303, and the second gear disk 401 is connected to the first gear disk 303 via a gear belt. A blade 402 is installed at the top of the second gear disk 401, and a bellows 403 is fitted around the outer side of the blade 402. The air inlet of the bellows 403 is located at the bottom of the bellows 403, and the air outlet of the bellows 403 is located at the top of the bellows 403. An upwardly extending connecting pipe 404 is connected to the air outlet of the bellows 403, and a water tank 406 is installed on the outer side of the connecting pipe 404. The water tank 406 is filled with cooling water, and the connecting pipe 404 is immersed in the cooling water in the water tank 406. One end of the connecting pipe 404 is connected to the air outlet of the bellows 403. The other end of 04 is equipped with a rotary joint 405, which is installed at the top of the first connecting shaft 302. An air passage 409 is provided inside the first connecting shaft 302. The bottom end of the air passage 409 extends into the interior of the cutting disc 301. An air chamber 410 communicating with the air passage 409 is provided inside the cutting disc 301. Multiple air outlets 411 communicating with the air chamber 410 are connected to the bottom end of the air chamber 410. The air outlets 411 are evenly distributed in a ring at the bottom end of the cutting disc 301. Air pipes 407 extending to both sides are connected to both sides of the connecting pipe 404. The air pipes 407 are all located below the water tank 406. Multiple air nozzles 408 are evenly distributed at the top of the air pipes 407. The air nozzles 408 are communicating with the interior of the air pipes 407.

[0036] Please see Figure 3 Below the air-cooled component 4, on one side of the cutting component 3, a grinding component 5 is installed. The operation of the grinding component 5 can grind the end face of the cut rail 1 once, so that the end face of the rail 1 can not obstruct the movement of the gas pressure welding equipment 2.

[0037] Specifically, the grinding assembly 5 includes a grinding wheel 501 mounted on one side of the cutting disc 301, and a second connecting shaft 502 is connected to the bottom end of the grinding wheel 501. A third gear disc 503 is fixedly connected to the top end of the second connecting shaft 502, and the third gear disc 503 is connected to the first gear disc 303 via a gear belt drive.

[0038] Please see Figure 2 and Figure 7 The water outlet component 6 is installed on one side of the grinding wheel 501 and located below the water tank 406. The water outlet component 6 can achieve intermittent water discharge through the rotation of the grinding wheel 501, thereby assisting the grinding operation of the grinding wheel 501 and playing a role in cooling and reducing friction loss.

[0039] Specifically, the water outlet assembly 6 includes a water outlet pipe 603 connected to the water tank 406, and a force-bearing block 602 is slidably inserted through the wall of the water outlet pipe 603. A pressing block 601 is fixed to the end face of the grinding wheel 501 at the same horizontal height as the force-bearing block 602. The outer walls of the pressing block 601 and the force-bearing block 602 are both arc-shaped. A partition 604 is fixed inside the water outlet pipe 603. A water collection cavity 608 is opened above the partition 604, and a water outlet cavity 609 is opened below it. A first drain outlet 605 is opened inside the partition 604, and a second drain outlet 606 with an inner diameter larger than that of the first drain outlet 605 is opened inside the force-bearing block 602. A return spring 607 installed on the inner wall of the water outlet pipe 603 is fixedly connected to the outer wall of the force-bearing block 602.

[0040] The working principle of the present invention is as follows: First, the gas pressure welding equipment 2 is installed on the outer wall of the rail 1. Then, the combustion flame is controlled to be ejected from the outlet by the electronic ignition component 205 to melt the welding part of the rail 1. Furthermore, the molten ends of the two sets of rails 1 move towards each other and squeeze, thereby achieving the welding of the rail 1.

[0041] After the gas pressure welding equipment 2 completes the welding of the rail 1, there will be a surplus on the end face of the rail 1 due to the gas pressure welding process. At this time, the drive motor 306 is started, and the drive motor 306 will drive the drive gear 305 to rotate. The drive gear 305 will then drive the first gear disk 303 to rotate through the driven tooth wall 304. When the first gear disk 303 rotates, it will drive the cutting disk 301 to rotate through the first connecting shaft 302. At this time, the gas pressure welding equipment 2 is started to move slowly, so the cutting disk 301 will move with the gas pressure welding equipment 2. When the cutting disk 301 moves to contact the surplus, it will cut the surplus.

[0042] At the same time, the rotation of the first gear disk 303 will also drive the third gear disk 503 to rotate through the action of the gear belt. The third gear disk 503 then drives the grinding wheel 501 to rotate through the second connecting shaft 502. After the grinding wheel 501 rotates, it will achieve the grinding effect on the remaining area, further adjusting the flatness of the welded joint of the rail 1. Then the gas pressure welding equipment 2 can directly pass through the welded joint and move to the next working position.

[0043] While the cutting disc 301 is running, the first gear disc 303 will also drive the second gear disc 401 to rotate via the gear belt. The rotation of the second gear disc 401 will directly drive the blade 402 to rotate. After the blade 402 rotates, it will draw in air and pass it through the air outlet into the connecting pipe 404. The gas in the connecting pipe 404 will be cooled down by the cooling effect of the water tank 406 and enter the air passage 409 through the rotary joint 405.

[0044] Furthermore, the cold air in the air passage 409 enters the air chamber 410 and is ejected from the bottom of the cutting disc 301 through multiple air outlets 411, achieving a cooling effect on the cutting disc 301 during the cutting process. It can also cool down the welded and non-welded parts of the rail 1, which greatly assists the cutting of the cutting disc 301, improves the cutting quality and efficiency, and some of the gas in the connecting pipe 404 will flow out into the air pipe 407. The gas in the air pipe 407 will be ejected to the outer wall of the water tank 406 through the air outlet nozzle 408, which will dissipate heat from the water tank 406 and ensure the cooling effect of the water tank, thus further assisting the operation of the air-cooling component 4.

[0045] In addition, the rotation of the grinding wheel 501 will drive the pressing block 601 on its end face to rotate. When the pressing block 601 rotates to contact the force block 602, it will press the force block 602, causing the force block 602 to press the return spring 607 and move into the water outlet pipe 603. At this time, the second drain 606 inside the force block 602 will move to connect with the first drain 605. Therefore, the water in the water collection chamber 608 will flow into the water outlet chamber 609 through the first drain 605 and the second drain 606 and flow out to the grinding area to assist the grinding wheel 501 in the grinding operation.

[0046] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A mobile rail welding device, comprising a rail (1) and a gas pressure welding device (2) mounted on the rail (1), characterized in that: The gas pressure welding equipment (2) includes a crimping machine and two sets of equipment bodies (201) installed on the outer wall of the rail (1). The equipment body (201) has an oxygen chamber (202) and an acetylene chamber (203) inside. The oxygen chamber (202) and the acetylene chamber (203) are distributed from top to bottom. The outer wall of the equipment body (201) is equipped with an electrically controlled ignition component (205) that is connected to both the oxygen chamber (202) and the acetylene chamber (203). The bottom end of the electrically controlled ignition component (205) has a downward-facing flame outlet (206). The outer wall of the first set of equipment bodies (201) is equipped with a hydraulic cylinder (204) whose output end is connected to the outer wall of the second set of equipment bodies (201). The main body of the equipment (201) has a processing chamber (207) inside, and a cutting component (3) is installed inside the processing chamber (207). A cooling component (4) is installed above the cutting component (3), and a grinding component (5) is installed below the cooling component (4) on one side of the cutting component (3). The cutting assembly (3) includes a cutting disc (301) installed inside the processing chamber (207), and a first connecting shaft (302) is fixedly connected to the top of the cutting disc (301), and a first gear disc (303) is fixedly connected to the top of the first connecting shaft (302). The outer wall of the first gear disk (303) is provided with a driven tooth wall (304), and a drive gear (305) is meshed with one side of the driven tooth wall (304). A drive motor (306) is installed at the end of the drive gear (305). The air-cooled assembly (4) includes a second gear disk (401) installed on one side of the first gear disk (303), and the second gear disk (401) is connected to the first gear disk (303) via a gear belt. The top of the second gear disk (401) is equipped with blades (402), and a wind box (403) is sleeved on the outside of the blades (402). The air inlet of the wind box (403) is located at the bottom of the wind box (403), and the air outlet of the wind box (403) is located at the top of the wind box (403). The air outlet end of the bellows (403) is connected to an upwardly extending connecting pipe (404), and a water tank (406) is provided on the outside of the connecting pipe (404). The inside of the water tank (406) is filled with cooling water, and the connecting pipe (404) is immersed in the cooling water in the water tank (406). One end of the connecting pipe (404) is connected to the air outlet of the bellows (403), and the other end of the connecting pipe (404) is equipped with a rotary joint (405). The rotary joint (405) is installed at the top of the first connecting shaft (302), and an air passage (409) is opened inside the first connecting shaft (302). The bottom end of the air passage (409) extends to the inside of the cutting disc (301), and an air chamber (410) communicating with the air passage (409) is opened inside the cutting disc (301). The bottom end of the air chamber (410) is connected to multiple sets of air outlets (411) communicating with the air chamber (410), and the air outlets (411) are equidistantly distributed in a ring at the bottom end of the cutting disc (301). The grinding assembly (5) includes a grinding wheel (501) mounted on one side of the cutting disc (301), and the bottom end of the grinding wheel (501) is connected to a second connecting shaft (502). The top end of the second connecting shaft (502) is fixedly connected to a third gear disc (503), and the third gear disc (503) is connected to the first gear disc (303) via a gear belt drive. The water outlet assembly (6) is installed on one side of the grinding wheel (501) and located below the water tank (406). The water outlet assembly (6) includes a water outlet pipe (603) communicating with the water tank (406), and a force-bearing block (602) is slidably passed through the pipe wall of the water outlet pipe (603). A pressing block (601) fixed to the end face of the grinding wheel (501) is provided at the same horizontal height as the force-bearing block (602), and the outer walls of both the pressing block (601) and the force-bearing block (602) are arc-shaped. A partition (604) is fixed inside the pipe (603), and a water collection cavity (608) is opened above the partition (604) and a water outlet cavity (609) is opened below it. A first drain outlet (605) is opened inside the partition (604), and a second drain outlet (606) with an inner diameter larger than the inner diameter of the first drain outlet (605) is opened inside the force block (602). A return spring (607) installed on the inner wall of the water outlet pipe (603) is fixedly connected to the outer wall of the force block (602).

2. The mobile rail welding equipment according to claim 1, characterized in that: Both sides of the connecting pipe (404) are connected to air pipes (407) extending to both sides, and the air pipes (407) are all located below the water tank (406). Multiple sets of equidistant air nozzles (408) are installed at the top of the air pipes (407), and the air nozzles (408) are connected to the inside of the air pipes (407).

3. A welding method using mobile rail welding equipment, characterized in that, Welding using the mobile rail welding equipment according to any one of claims 1-2, the process includes the following steps: S1. The rail is clamped and limited by the crimping machine of the gas pressure welding equipment, and the gas pressure welding equipment is installed. S2. Activate the electronic ignition component, enabling it to ignite acetylene with the aid of oxygen, thereby ejecting flames from the outlet to melt the end of the rail to be welded. S3. Through the cooperation of the crimping machine and the hydraulic cylinder, the molten ends of the two sets of rails move towards each other and are squeezed, thereby completing the welding of the rails. S4. By combining the cutting component, the air-cooling component, and the grinding component, the excess material at the rail welding joint is processed, allowing the gas pressure welding equipment to continue moving along the rail to the next work location without disassembly.

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