A push-out device for a multi-functional rail welding machine
By designing a push-out device on the multi-functional rail welding machine, the push-out mechanism and the upsetting cylinder are spaced a certain distance apart in the vertical direction. Through the cooperation of the guide sleeve and the cylinder system, the problem of traditional devices being unable to adapt to the removal of rail weld beads in narrow areas of the multi-functional rail welding machine is solved, and stable and accurate push-out action is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU RUIWEI TRANSPORTATION TECH CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-31
AI Technical Summary
The vertical distance between the push-out area of the traditional push-out device and the telescopic rod of the upsetting cylinder is small or located on the same horizontal plane, which makes it impossible to adapt to the spatial layout requirements of the multi-functional rail welding machine and to effectively remove rail weld beads in narrow areas.
Design a push-out device for a multi-functional rail welding machine. The push-out area of the push-out mechanism and the telescopic rod of the top forging cylinder of the rail welding machine are at a certain distance in the vertical direction. It is fixedly connected to the push-out plate through the middle cylinder and the side cylinder. The guide sleeve guides the sliding to achieve the stability and accuracy of the push-out action.
The stability and accuracy of the push-out device on the multi-functional rail welding machine have been achieved, enabling it to adapt to the removal of rail weld beads in narrow areas and improving the reliability and adaptability of the push-out action.
Smart Images
Figure CN224575040U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of rail welding machine push-out equipment, and in particular to a push-out device for a multi-functional rail welding machine. Background Technology
[0002] Traditional rail welding machines are limited by their structure, making them unsuitable for welding rails at turnout locations or in narrow areas. Therefore, narrow-clamping rail welding machines have emerged in the industry. By setting the clamping area of the rail clamping device at the bottom of the welding machine and narrowing the structure of the clamping component, it can be inserted into the turnout location of the track to clamp the rail.
[0003] The weld bead removal device is used to push out and remove weld beads at the weld location after rail welding is completed. However, the vertical distance between the weld bead removal area and the telescopic rod of the upsetting cylinder in traditional weld bead removal mechanisms is small, or they are located on the same horizontal plane, making them unsuitable for existing multi-functional rail welding machines. Therefore, designing a weld bead removal device that can adapt to multi-functional rail welding machines is particularly important. Utility Model Content
[0004] To address the problems existing in the prior art, this application provides a push-out device for a multi-functional rail welding machine.
[0005] This application provides a protrusion pushing device for a multi-functional rail welding machine, which adopts the following technical solution: A push-out device for a multi-functional rail welding machine includes a push-out mechanism sleeved on the rail for pushing out weld beads on the rail surface; a power system for moving the push-out mechanism and realizing the push-out action; the push-out area of the push-out mechanism and the telescopic rod of the top forging cylinder of the rail welding machine are at a certain distance in the vertical direction, and the push-out area of the push-out mechanism is located below the telescopic rod of the top forging cylinder of the rail welding machine.
[0006] Optionally, the pushing mechanism includes a pushing plate slidably disposed on the rail welding machine, and a pushing knife assembly disposed on the pushing plate for scraping off weld beads on the rail surface, wherein the pushing area is disposed on the pushing knife assembly. The power system includes a central hydraulic cylinder and two side hydraulic cylinders mounted on the rail welding machine. The piston rod a of the central hydraulic cylinder and the piston rods b of the two side hydraulic cylinders are fixedly connected to the push plate. The connection end of the piston rod a of the central hydraulic cylinder to the push plate is located above and close to the push knife assembly. The two side hydraulic cylinders are symmetrically arranged on both sides of the push plate and are located above the central hydraulic cylinder.
[0007] Optionally, the push plate is provided with a plurality of guide sleeves, the guide sleeves including an upper sleeve and a lower sleeve, the upper sleeve is adapted to the guide rod of the rail welding machine and is used for the guide rod of the rail welding machine to pass through, and the lower sleeve is adapted to the telescopic rod of the upsetting cylinder and is used for the telescopic rod of the upsetting cylinder to pass through. The bottom of the guide sleeve is also provided with a stiffening plate, which is fixedly connected to the guide sleeve and the push plate respectively.
[0008] Optionally, the mid-section of the intermediate hydraulic cylinder in the vertical direction coincides with the mid-section of the push-blade assembly in the vertical direction.
[0009] Optionally, a first blade holder and a second blade holder are slidably disposed on the push plate. The push blade assembly includes a plurality of push blades and a bottom push blade. Each push blade is fixed on the first blade holder or the second blade holder. The bottom push blade is mounted on the push plate. Each push blade and the bottom push blade together form the push area. The push plate is provided with a splitting and joining component for driving the first blade holder and the second blade holder to slide in a direction that moves closer to or further away from each other.
[0010] Optionally, the splitting and joining assembly includes a first rocker arm and a second rocker arm rotatably mounted on the push plate, and a splitting and joining cylinder for driving the first rocker arm and the second rocker arm to rotate simultaneously in a direction that approaches or moves away from each other. The first rocker arm is hinged to a first connecting block, which is slidably connected to a first tool holder. The second rocker arm is hinged to a second connecting block, which is slidably connected to a second tool holder.
[0011] Optionally, the pusher blade can be detachably mounted on the first or second blade holder, and the pusher plate is provided with a mounting groove adapted to the bottom pusher blade, and the bottom pusher blade is placed in the mounting groove.
[0012] Optionally, the push plate is provided with a fire baffle assembly, the fire baffle assembly is provided with a fire baffle section for the rail to pass through, and the fire baffle section is adapted to the rail.
[0013] Optionally, the fire baffle assembly includes a first fire baffle and a second fire baffle that are slidably disposed on the push plate. Both the first fire baffle and the second fire baffle have fire baffle grooves on their sides that are close to each other, and the fire baffle grooves on the first fire baffle and the second fire baffle together form the fire baffle zone.
[0014] Optionally, a first connecting rod is hinged to the first rocker arm, and the first connecting rod is hinged to the first fire baffle plate; a second connecting rod is hinged to the second rocker arm, and the second connecting rod is hinged to the second fire baffle plate.
[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. This application achieves the pushing action by mounting the pushing mechanism on the rail and enabling the power system to move the pushing mechanism. By setting a vertical distance between the telescopic rod of the top forging cylinder of the rail welding machine and the pushing area of the pushing mechanism, and by positioning the telescopic rod of the top forging cylinder above the pushing area, the spatial layout of the pushing device is adjusted. Compared with the traditional pushing device, the pushing area of the pushing mechanism is moved down, making the pushing device adaptable to multi-functional rail welding machines.
[0016] 2. This application achieves stable movement of the push plate by fixing the piston rod a of the intermediate cylinder and the piston rods b of the two side cylinders to the push plate. At the same time, the connection end of the piston rod a of the intermediate cylinder to the push plate is located above and close to the push knife assembly, so that the force application point of the intermediate cylinder is close to the push area of the push mechanism, which can effectively balance the force in the push area and improve the stability and accuracy of the push action.
[0017] 3. This application provides guide sleeves on the push plate, specifically an upper sleeve and a lower sleeve, which are adapted to the guide rod of the rail welding machine or the telescopic rod of the upsetting cylinder, respectively, to guide the sliding of the push plate, thereby ensuring the stability and accuracy of the push plate during movement and making the push action more stable and reliable. Attached Figure Description
[0018] Figure 1 This is a front view of the structure of an existing multi-functional rail welding machine, as described in the embodiments of this application. Figure 2 This is a structural schematic diagram of an embodiment of the present application used to illustrate the alignment relationship between the push-out mechanism and the multi-functional rail welding machine; Figure 3 This is a schematic diagram illustrating the structure of the push-pull mechanism in an embodiment of this application; Figure 4 This is a schematic diagram illustrating the structure of the tumor-pushing knife assembly according to an embodiment of this application; Figure 5 This is a schematic diagram illustrating the structure of the fire baffle assembly in an embodiment of this application.
[0019] Explanation of reference numerals in the attached drawings: 1. Rail welding machine; 11. Telescopic rod; 12. Guide rod; 2. Rail clamping device; 21. Fixed seat; 22. First clamping arm; 23. Second clamping arm; 24. Sleeve; 25. Clamping cylinder; 26. Movable block; 27. First connecting rod; 28. Second connecting rod; 3. Pushing mechanism; 31. Pushing area; 32. Pushing plate; 321. Guide sleeve; 322. Notch; 323. First tool holder; 324. Second tool holder; 325. Mounting groove; 326. First slider; 327. Second slider; 33. Pushing blade assembly; 331. Pushing blade; 332. Bottom pushing blade; 34. Splitting and closing assembly; 341. First rocker arm; 342. Second rocker arm; 343. Splitting and closing cylinder; 344. First connecting block; 345. Second connecting block; 346. First connecting rod; 347. Second connecting rod; 35. Fire baffle assembly; 351. First fire baffle; 352. Second fire baffle; 353. Fire baffle zone; 4. Power system; 41. Intermediate cylinder; 411. Piston rod a; 42. Side cylinder; 421. Piston rod b. Detailed Implementation
[0020] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail. The described embodiments are merely possible technical implementations of this utility model, but are not limited thereto. Those skilled in the art can certainly combine the embodiments of this utility model to obtain other embodiments without creative effort, which are also within the protection scope of this utility model.
[0021] like Figure 1 The existing multi-functional rail welding machine 1, by setting the clamping area of the rail clamping device 2 at the bottom of the rail welding machine 1 and narrowing the structure of the clamping component so that it can be inserted into the turnout position of the track, completes the clamping of the rail. The rail clamping device 2 includes a fixed base 21 fixedly mounted on the rail welding machine 1, a first clamping arm 22 and a second clamping arm 23 rotatably mounted on the fixed base 21, a sleeve 24 fixedly mounted on the fixed base 21, and a clamping cylinder 25 slidably passing through the sleeve 24. The movable block 26 is fixedly mounted on the clamping cylinder 25, and the first connecting rod 27 and the second connecting rod 28 are rotatably mounted on both sides of the movable block 26. The first connecting rod 27 is hinged to the first clamping arm 22, and the second connecting rod 28 is hinged to the second clamping arm 23. When the piston rod of the clamping cylinder 25 retracts, the movable block 26 moves downward, causing the first connecting rod 27 and the second connecting rod 28 to swing, thereby bringing the bottom positions of the first clamping arm 22 and the second clamping arm 23 closer to each other, thus achieving the clamping of the rail.
[0022] This application discloses a protrusion pushing device for a multi-functional rail welding machine. (Refer to...) Figure 1 and Figure 2The system includes a push-out mechanism 3, mounted on the rail for pushing away weld beads on the rail surface, and a power system 4 for moving the push-out mechanism 3 to perform the push-out action. Specifically, the push-out mechanism 3 is slidably mounted on the rail welding machine 1, and its direction of movement is parallel to the length direction of the telescopic rod 11 of the forging cylinder of the rail welding machine 1. The push-out area 31 of the push-out mechanism 3 and the telescopic rod 11 of the forging cylinder of the rail welding machine 1 are vertically spaced, with the push-out area 31 located below the telescopic rod 11. The push-out area 31 of the push-out mechanism 3 and the clamping area of the rail clamping device 2 are on the same horizontal plane and in the same straight direction. This arrangement makes a new adjustment to the spatial layout of the push-out device, enabling it to adapt to the spatial layout requirements of the multi-functional rail welding machine 1 and solving the problem of the traditional push-out mechanism 3 being unable to adapt due to layout issues.
[0023] Reference Figure 3 The pushing mechanism 3 includes a pushing plate 32 slidably mounted on the rail welding machine 1, and a scraping knife assembly 33 mounted on the pushing plate 32 for scraping weld beads off the rail surface. Specifically, the pushing plate 32 is provided with multiple guide sleeves 321, each including an upper sleeve and a lower sleeve. The upper sleeve is adapted to the guide rod 12 of the rail welding machine 1 and is used for the guide rod 12 to pass through. The lower sleeve is adapted to the telescopic rod 11 of the upsetting cylinder and is used for the telescopic rod 11 to pass through, thereby achieving sliding guidance of the pushing plate 32 and ensuring the stability and accuracy of the pushing plate 32 during movement, making the scraping action more stable and reliable. Specifically, the guide sleeve 321 has a certain length in the sliding direction of the pushing plate 32, and the length of the guide sleeve 321 is greater than the thickness of the pushing plate 32. In addition, the bottom of the guide sleeve 321 is provided with a stiffening plate, which is fixedly connected to the guide sleeve 321 and the push plate 32 respectively, for reinforcing the guide sleeve 321.
[0024] Reference Figure 3 and Figure 4 Specifically, the bottom of the push plate 32 is designed as a trapezoidal structure, with both side walls gradually approaching the ground. A notch 322 for the rail to pass through is located in the middle of the bottom of the push plate 32, and the pusher assembly 33 is installed at the notch 322. This design allows the pusher mechanism 3 to be adapted to the multi-functional rail welding machine 1, inserting the pusher assembly 33 into the narrow area of the track switch position to push the weld bead off the rail surface.
[0025] Reference Figure 2 and Figure 3The power system 4 includes a central hydraulic cylinder 41 and two side hydraulic cylinders 42 fixedly mounted on the rail welding machine 1. The piston rod a411 of the central cylinder 41 and the piston rod b421 of the two side cylinders 42 are both fixedly connected to the push plate 32. The central cylinder 41 and the side cylinders 42 are generally hydraulic cylinders, capable of providing significant thrust. The piston rods a411 and b421 are fixedly connected to the push plate 32 by bolts or other means to ensure effective power transmission to the push plate 32. The central cylinder 41 and the side cylinders 42 work together to push the push plate 32, thereby driving the pusher assembly 33 to push the weld bead on the rail surface.
[0026] Reference Figure 2 and Figure 3 The piston rod a411 of the intermediate cylinder 41 is connected to the push plate 32 at a point above and close to the pusher assembly 33. The vertical cross-section of the intermediate cylinder 41 coincides with the vertical cross-section of the pusher assembly 33. The piston rod a411 of the intermediate cylinder 41 passes through the fixed seat 21 of the rail clamping device 2 and is located between the first clamping arm 22 and the second clamping arm 23. Two side cylinders 42 are symmetrically arranged on both sides of the pusher plate 32 and are positioned above the intermediate cylinder 41. This arrangement makes the movement of the pusher plate 32 more stable. Furthermore, the connection point of the piston rod a411 of the intermediate cylinder 41 to the pusher plate 32 is close to the notch 322, making the force application point of the intermediate cylinder 41 close to the pusher area 31 of the pusher mechanism 3. This effectively balances the force on the pusher area 31, improves the stability and accuracy of the pusher action, and prevents uneven force on the pusher plate 32, which could lead to tilting. Here, "close to" refers to the minimum distance that can be approached in the vertical direction to the tumor-pushing knife component 33.
[0027] Reference Figure 4 The push plate 32 has a first cutter holder 323 and a second cutter holder 324 slidably disposed on it. The push plate 32 has guide rails fixedly disposed on it for the first cutter holder 323 and the second cutter holder 324 to slide on, and the first cutter holder 323 and the second cutter holder 324 are respectively slidably sleeved on the corresponding guide rails. The pusher knife assembly 33 includes a plurality of pusher knives 331 and a bottom pusher knife 332. The pusher knives 331 are fixed on the first cutter holder 323 or the second cutter holder 324 by bolts. The push plate 32 has a mounting groove 325 adapted to the bottom pusher knife 332 located below the first cutter holder 323 and the second cutter holder 324. The bottom pusher knife 332 is placed in the mounting groove 325. The pusher knives 331 and the bottom pusher knife 332 together form a pusher area 31. The central symmetry plane of the pusher knives 331 and the bottom pusher knife 332 in the vertical direction is the mid-section of the pusher knife assembly 33 in the vertical direction.
[0028] Reference Figure 4Specifically, the weld spatter removal tool 331 and the bottom weld spatter removal tool 332 are generally made of cemented carbide, a material with high hardness and good wear resistance. Their cutting edges undergo special grinding treatment, resulting in sharp cutting edges. The weld spatter removal area 31, formed by the weld spatter removal tools 331 and the bottom weld spatter removal tool 332, is adapted to the shape of the rail, allowing the weld spatter removal tools 331 and the bottom weld spatter removal tool 332 to fully conform to the side wall of the rail. This effectively scrapes away the weld spatter on the rail surface when the push plate 32 slides. Furthermore, the weld spatter removal tool 331 is fixed to the first tool holder 323 or the second tool holder 324 by bolts, and the bottom weld spatter removal tool 332 is fixed to the push plate 32 by the mounting groove 325, making it easy to disassemble and replace the weld spatter removal tools 331 and the bottom weld spatter removal tool 332.
[0029] Reference Figure 4 The push plate 32 is also provided with a splitting assembly 34 for driving the first tool holder 323 and the second tool holder 324 to slide in a direction that approaches or moves away from each other; the splitting assembly 34 includes a first rocker arm 341 and a second rocker arm 342 rotatably mounted on the push plate 32, and a splitting cylinder 343 for driving the first rocker arm 341 and the second rocker arm 342 to rotate simultaneously in a direction that approaches or moves away from each other; the first rocker arm 341 and the second rocker arm 342 are rotatably mounted on the push plate 32 by a pin, and the splitting cylinder 343 is hinged. The piston rod of the split-and-joint cylinder 343 is hinged to the first rocker arm 342, and the first rocker arm 341 is hinged to a first connecting block 344, which is slidably connected to the first tool holder 323. The first tool holder 323 has a first sliding groove for the first connecting block 344 to slide. The second rocker arm 342 is hinged to a second connecting block 345, which is slidably connected to the second tool holder 324. The second tool holder 324 has a second sliding groove for the second connecting block 345 to slide. When the split-and-joint cylinder 343 is working, it drives the first rocker arm 341 and the second rocker arm 342 to rotate, which in turn drives the first tool holder 323 and the second tool holder 324 to slide simultaneously in directions that are closer to or further away from each other through the first connecting block 344 and the second connecting block 345. In addition, other methods can be used to drive the first tool holder 323 and the second tool holder 324 to slide as the splitting and joining components 34, such as using a motor with gear transmission, or using an electric push rod or a pneumatic cylinder to drive it.
[0030] Reference Figure 5In addition, a fire baffle assembly 35 is provided on the push plate 32. The fire baffle assembly 35 includes a first fire baffle 351 and a second fire baffle 352 that are slidably disposed on the push plate 32. Fire baffle grooves are provided on the side of the first fire baffle 351 and the second fire baffle 352 that are close to each other. The fire baffle grooves on the first fire baffle 351 and the second fire baffle 352 together form a fire baffle interval 353, which is adapted to the rail. Specifically, a guide strip is fixedly installed on the push plate 32. The guide strip is parallel to the length direction of the guide rail. A first slider 326 and a second slider 327 are slidably sleeved on the guide strip. A first fire baffle 351 is fixedly connected to the first slider 326, and a second fire baffle 352 is fixedly connected to the second slider 327. The first fire baffle 351 and the second fire baffle 352 are generally made of fireproof materials, such as asbestos boards. Since the rail welding machine 1 needs to heat the rail during rail welding, the function of the first fire baffle 351 and the second fire baffle 352 is to prevent the flame from burning the push mechanism 3 during the rail heating process, which would cause damage to the push mechanism 3 and its components.
[0031] Reference Figure 5 A first connecting rod 346 is hinged to the first rocker arm 341, and the first connecting rod 346 is hinged to the first slider 326. A second connecting rod 347 is hinged to the second rocker arm 342, and the second connecting rod 347 is hinged to the second slider 327. When the split-opening cylinder 343 drives the first rocker arm 341 and the second rocker arm 342 to rotate, the first baffle plate 351 and the second baffle plate 352 can be simultaneously driven to slide in a direction that approaches or moves away from each other through the first connecting rod 346 and the second connecting rod 347. Furthermore, when the first tool holder 323 and the second tool holder 324 slide in a direction that approaches each other, the first baffle plate 351 and the second baffle plate 352 slide in a direction that moves away from each other.
[0032] The implementation principle of the push-out device for a multi-functional rail welding machine in this application embodiment is as follows: The existing multi-functional rail welding machine 1 is mainly designed to adapt to rail welding construction in the turnout position or narrow area of the track. However, since the traditional rail welding machine 1 uses a push-out device, the vertical distance between the push-out area 31 and the top forging cylinder is small, or they are located on the same horizontal plane, and the overall structure width of the push-out device is large, it cannot adapt to the existing multi-functional rail welding machine 1.
[0033] Therefore, this application makes a reasonable arrangement of the pushing mechanism 3 and the power system 4, so that the telescopic rod 11 of the top forging cylinder of the rail welding machine 1 and the pushing area 31 of the pushing mechanism 3 have a suitable distance in the vertical direction, and the telescopic rod 11 of the top forging cylinder of the rail welding machine 1 is located above the pushing area 31. Compared with the traditional pushing device, the spatial layout of the pushing device is adjusted, and the pushing area 31 of the pushing mechanism 3 is moved down, so that the pushing device can adapt to the spatial layout requirements of the multi-functional rail welding machine 1, and solves the problem that the traditional pushing mechanism 3 cannot be adapted due to layout problems.
[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A protrusion pushing device for a multi-functional track laying machine, characterized in that, include A push-out mechanism (3) is installed on the rail to push out weld beads on the rail surface; The power system (4) used to move the push-protrusion mechanism (3) and realize the push-protrusion action; The pushing area (31) of the pushing mechanism (3) and the telescopic rod (11) of the top forging cylinder of the rail welding machine (1) are at a certain distance in the vertical direction, and the pushing area (31) of the pushing mechanism (3) is located below the telescopic rod (11) of the top forging cylinder of the rail welding machine (1).
2. A protrusion device for a multi-functional track-welding machine according to claim 1, characterized in that: The push-out mechanism (3) includes a push-out plate (32) slidably disposed on the rail welding machine (1), and a push-out knife assembly (33) disposed on the push-out plate (32) for scraping off weld beads on the rail surface, wherein the push-out area is disposed on the push-out knife assembly (33). The power system (4) includes an intermediate cylinder (41) and two side cylinders (42) mounted on the rail welding machine (1). The piston rod a (411) of the intermediate cylinder (41) and the piston rod b (421) of the two side cylinders (42) are fixedly connected to the push plate (32). The connection end of the piston rod a (411) of the intermediate cylinder (41) and the push plate (32) is located above and close to the push knife assembly (33). The two side cylinders (42) are symmetrically arranged on both sides of the push plate (32) and are located above the intermediate cylinder (41).
3. A protrusion pushing device for a multi-functional track-welding machine according to claim 2, characterized in that: The push plate (32) is provided with a plurality of guide sleeves (321). The guide sleeve (321) includes an upper sleeve and a lower sleeve. The upper sleeve is adapted to the guide rod (12) of the rail welding machine (1) and is used for the guide rod (12) of the rail welding machine (1) to pass through. The lower sleeve is adapted to the telescopic rod (11) of the up forging cylinder and is used for the telescopic rod (11) of the up forging cylinder to pass through. The bottom of the guide sleeve (321) is also provided with a stiffening plate, which is fixedly connected to the guide sleeve (321) and the push plate (32) respectively.
4. The protrusion pushing device for the multi-functional track-welding machine according to claim 2, characterized in that: The mid-section of the intermediate cylinder (41) in the vertical direction coincides with the mid-section of the push-tumor knife assembly (33) in the vertical direction.
5. The protrusion device for the multi-functional track-welding machine according to claim 2, characterized in that: The push plate (32) is slidably provided with a first knife holder (323) and a second knife holder (324). The push knife assembly (33) includes a plurality of push knives (331) and a bottom push knife (332). Each push knife (331) is fixed on the first knife holder (323) or the second knife holder (324). The bottom push knife (332) is installed on the push plate (32). Each push knife (331) and the bottom push knife (332) together form the push area (31). The push plate (32) is provided with a splitting and joining assembly (34) for driving the first knife holder (323) and the second knife holder (324) to slide in a direction that moves closer to or further away from each other.
6. A projection device for a multi-functional track welder according to claim 5, characterized in that: The splitting and joining assembly (34) includes a first rocker arm (341) and a second rocker arm (342) rotatably mounted on the push plate (32), and a splitting and joining cylinder (343) for driving the first rocker arm (341) and the second rocker arm (342) to rotate simultaneously in a direction that approaches or moves away from each other. The first rocker arm (341) is hinged to a first connecting block (344), which is slidably connected to a first tool holder (323). The second rocker arm (342) is hinged to a second connecting block (345), which is slidably connected to a second tool holder (324).
7. A projection device for a multi-functional track welder according to claim 5, characterized in that: The push-up tool (331) is detachably mounted on the first tool holder (323) or the second tool holder (324). The push-up plate (32) is provided with a mounting groove (325) that is adapted to the bottom push-up tool (332). The bottom push-up tool (332) is placed in the mounting groove (325).
8. A protrusion device for a multi-functional track-welding machine according to claim 6, characterized in that: The push plate (32) is provided with a fire baffle assembly (35), and the fire baffle assembly (35) is provided with a fire baffle section (353) for the rail to pass through, and the fire baffle section (353) is adapted to the rail.
9. A projection device for a multi-functional track welder according to claim 8, characterized in that: The fire baffle assembly (35) includes a first fire baffle (351) and a second fire baffle (352) slidably disposed on the push plate (32). The first fire baffle (351) and the second fire baffle (352) are provided with fire baffle grooves on the side of each other that are close to each other, and the fire baffle grooves on the first fire baffle (351) and the second fire baffle (352) together form the fire baffle interval (353).
10. A projection device for a multi-functional track welder according to claim 9, characterized in that: A first connecting rod (346) is hinged to the first rocker arm (341), and the first connecting rod (346) is hinged to the first fire baffle (351). A second connecting rod (347) is hinged to the second rocker arm (342), and the second connecting rod (347) is hinged to the second fire baffle (352).