Railway track welding protection device

Abstract

The present invention belongs to the technical field of track welding, and provides a railway track welding protection device, comprising a positioning plate, wherein the positioning plate is provided with four clamping mechanisms arranged in a rectangular shape, the clamping mechanisms are used to be fixed to the cross section of the rail, the upper end surface of the positioning plate is fixedly connected with a support frame, and the support frame is fixedly connected with a material guiding mechanism; a driving mechanism is arranged on the positioning plate, and both ends of the driving mechanism are fixedly connected with a No. 1 electric telescopic seat capable of vertical extension and contraction, the telescopic portion of the No. 1 electric telescopic seat is fixedly connected with an electric telescopic rod capable of horizontal extension and contraction, the telescopic portion of the electric telescopic rod is fixedly connected with a sealing plate, and an electric heater is arranged on the sealing plate; in the present invention, an air pump is started to increase the air pressure in the slide plate, and under the action of the air pressure, all the pressure plates are pressed into the slot hole, thereby pressing the solder inside the slot hole toward the weld, thereby increasing the density of the solder in the weld.

Description

Technical Field

[0001] The invention belongs to the technical field of track welding, and in particular relates to a railway track welding protection device. Background Art

[0002] Railway tracks are also called rails, rails, and tracks. They are mainly used on railways and work with switches to allow trains to move without turning. Railway tracks usually consist of two parallel steel rails fixed on sleepers with ballast under them. Railway tracks are made of steel.

[0003] When a rail is broken, it needs to be welded. The existing processing method is generally to align two sections of the rail, wrap the broken part with a mold, and then pour solder on the broken part for welding.

[0004] However, in the existing railway rail welding, the solder tends to flow out to both sides when flowing downward, resulting in insufficient solder filling density, or the solder cools too quickly to cause many holes inside the joint, resulting in a loose connection at the joint where the flow is cut off, and solder leaks out of the weld after welding, which can easily cause burns to the operator, and the leaked solder also increases the steps of subsequent processing. Summary of the invention

[0005] The purpose of the present invention is to provide a railway track welding protection device, aiming to solve the technical problem in the prior art that solder easily leaks out during the welding of existing railway tracks, thereby causing insufficient weld filling density.

[0006] The present invention is implemented as follows: a railway track welding protection device comprises a positioning plate, four clamping mechanisms are arranged in a rectangular shape on the positioning plate, the clamping mechanisms are used to fix with the cross section of the rail, the upper end surface of the positioning plate is fixedly connected with a support frame, and the support frame is fixedly connected with a material guide mechanism;

[0007] The positioning plate is provided with a driving mechanism, and both ends of the driving mechanism are fixedly connected with a No. 1 electric telescopic seat that can be telescopically extended vertically, and the telescopic portion of the No. 1 electric telescopic seat is fixedly connected with an electric telescopic rod that can be telescopic horizontally, and the telescopic portion of the electric telescopic rod is fixedly connected with a sealing plate, and an electric heater is provided on the sealing plate, and the driving mechanism can drive the sealing plate to move horizontally;

[0008] The sealing plate is provided with two strip grooves, each of which is provided with a grinding mechanism, which can grind the surface of the vertical section of the rail. A slot hole is opened in the middle of the sealing plate, and a leveling mechanism is provided on the sealing plate, which can fill the welding position.

[0009] Further technical solution: the leveling mechanism includes a No. 3 electric rod, a slide plate, a scraper plate and a pressure plate;

[0010] The sealing plate is slidably connected with a slide plate, and the slide plate seals one side end surface of the slot hole, and the sealing plate is fixedly connected with a No. 3 electric rod, and the telescopic part of the No. 3 electric rod is fixedly connected with the slide plate, and the slide plate is slidably connected with a plurality of scrapers and a plurality of pressure plates, and the scrapers and pressure plates are spaced apart, and all the scrapers are connected to the inner cavity surface of the slide plate through elastic push springs, and all the pressure plates are fixedly connected to the inner cavity surface of the slide plate through elastic tension springs.

[0011] Further technical solution: Each scraper is provided with an exhaust hole near the root, the air hole is connected to the inner cavity of the skateboard, an air pump and a filter box are fixedly connected to the skateboard, the air pump is connected to the skateboard and the filter box, and the air pump is also provided with an air inlet pipe connected to the outside.

[0012] Further technical solution: the grinding mechanism includes a No. 2 electric telescopic seat, a rotating roller and a grinding strip;

[0013] A No. 2 electric telescopic seat is fixedly arranged in the strip groove, the telescopic part of the No. 2 electric telescopic seat is rotatably connected to a roller, a motor for driving the roller to rotate is arranged inside the telescopic part of the No. 2 electric telescopic seat, and a plurality of grinding strips are arranged on the surface of the roller along the circumferential direction.

[0014] Further technical solution: the material guiding mechanism comprises a material guiding cylinder and a telescopic material guiding sleeve, the material guiding cylinder is fixedly connected to the support frame, and the bottom of the material guiding cylinder is connected to the telescopic material guiding sleeve.

[0015] Further technical solution: The driving mechanism includes a sliding frame and a No. 2 electric rod, the sliding frame is horizontally slidably connected to the positioning plate, the sliding frame is provided with an injection hole, the positioning plate is fixedly connected to the No. 2 electric rod, and the telescopic part of the No. 2 electric rod is fixedly connected to the sliding frame.

[0016] Further technical solution: the clamping mechanism includes a No. 1 electric rod, a slider and a clamping plate;

[0017] The fixing part of the No. 1 electric rod is fixedly connected to the positioning plate, the telescopic part of the No. 1 electric rod is fixedly connected to a sliding block, and the sliding block is slidably connected to a clamping plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The electric telescopic rod drives the sealing plate close to the side of the vertical section of the rail. Before welding, the No. 2 electric telescopic seat is started to extend, so that the roller extends out of the sealing plate. At this time, the roller is started to rotate, and the No. 2 electric telescopic seat is driven by the driving mechanism to move along the side of the vertical section of the rail. The No. 2 electric telescopic seat grinds the side of the vertical section of the rail, thereby improving the tightness of the sealing plate and the side of the vertical section of the rail, and improving the sealing effect of the sealing plate around the weld to avoid leakage of welds and burns to operators after leakage;

[0020] 2. The driving mechanism drives the grinding mechanism on the sealing plate to move horizontally to grind the side of the vertical section of the rail. At this time, the scraper moves along the side of the vertical section of the rail and scrapes off the excess rust on the side of the vertical section of the rail. The air pump is started, and the air pump sucks air through all the air holes on the scraper, thereby sucking the waste polished by the grinding mechanism into the filter box;

[0021] 3. Start the electric heaters on the two sealing plates to heat the sealing plates, and the sealing plates preheat the rails, thereby improving the welding effect of the solder and avoiding too fast cooling of the solder, which will cause more gaps inside the weld;

[0022] 4. When excess solder fills the slot, start the No. 3 electric rod to drive the slide to move vertically back and forth. The slide drives the scraper to flatten the solder in the slot toward the concave part of the weld. Start the air pump to increase the air pressure in the slide. Since all the air holes are contracted into the slide at this time, the inner cavity of the slide remains closed. Under the action of air pressure, all the pressure plates are squeezed into the slot, thereby squeezing the solder inside the slot toward the weld, thereby increasing the density of the solder in the weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the structure of the clamping mechanism and the driving mechanism in the present invention.

[0025] Figure 3 It is a schematic diagram of the connection between the sliding frame and the sealing plate in the present invention.

[0026] Figure 4 It is a schematic diagram of the connection between the sealing plate and the leveling mechanism in the present invention.

[0027] Figure 5 It is a structural schematic diagram of the leveling mechanism in the present invention.

[0028] Figure 6 It is a structural schematic diagram of the grinding mechanism in the present invention.

[0029] Figure 7 for Figure 6 A magnified schematic diagram of area A in the middle.

[0030] Figure 8 Schematic diagram of the rails to be welded.

[0031] In the attached drawings: 1. positioning plate; 2. clamping mechanism; 21. No. 1 electric rod; 22. slider; 23. clamping plate; 3. driving mechanism; 31. sliding frame; 32. No. 2 electric rod; 4. material guiding mechanism; 41. material guiding cylinder; 42. telescopic material guiding sleeve; 5. No. 1 electric telescopic seat; 6. electric telescopic rod; 7. grinding mechanism; 71. No. 2 electric telescopic seat; 72. roller; 73. grinding strip; 8. leveling mechanism; 81. No. 3 electric rod; 82. slide plate; 83. scraper; 84. pressing plate; 85. air hole; 86. air pump; 87. filter box; 9. strip groove; 10. support frame; 11. sealing plate; 12. electric heater; 13. injection hole; 14. slot hole. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0034] like Figure 1-Figure 7 As shown, a railway track welding protection device provided by the present invention comprises a positioning plate 1, on which four clamping mechanisms 2 are arranged in a rectangular shape, and the clamping mechanisms 2 are used to be fixed to the cross section of the rail, and the upper end surface of the positioning plate 1 is fixedly connected to a support frame 10, and the support frame 10 is fixedly connected to a material guide mechanism 4;

[0035] The positioning plate 1 is provided with a driving mechanism 3, and both ends of the driving mechanism 3 are fixedly connected with a first electric telescopic seat 5 capable of vertical telescopic extension, and the telescopic portion of the first electric telescopic seat 5 is fixedly connected with an electric telescopic rod 6 capable of horizontal telescopic extension, and the telescopic portion of the electric telescopic rod 6 is fixedly connected with a sealing plate 11, and an electric heater 12 is provided on the sealing plate 11, and the driving mechanism 3 can drive the sealing plate 11 to move horizontally;

[0036] The sealing plate 11 is provided with two strip grooves 9, each of which is provided with a grinding mechanism 7, and the grinding mechanism 7 can grind the surface of the vertical section of the rail. A slot hole 14 is opened in the middle of the sealing plate 11, and a leveling mechanism 8 is provided on the sealing plate 11, and the leveling mechanism 8 can fill the welding position.

[0037] In this embodiment, the positioning plate 1 is laid flat on the upper sides of the two rail sections, the clamping mechanism 2 is started, the positioning plate 1 is fixed to the two rail sections through the clamping mechanism 2, and the material guide mechanism 4 is aligned with the joint of the two rail sections;

[0038] Start the electric telescopic rod 6, which drives the sealing plate 11 close to the side of the vertical section of the rail. At this time, the grinding mechanism 7 on the sealing plate 11 fits with the side of the vertical section of the rail; start the driving mechanism 3, which can drive the sealing plate 11 to move back and forth horizontally, and the sealing plate 11 drives the grinding mechanism 7 to grind the side of the vertical section of the rail. Then, start the grinding mechanism 7 to shrink into the strip groove 9. At this time, start the two electric telescopic rods 6 to push the two sealing plates 11 to fit with the side surfaces of the two sides of the vertical section of the rail, thereby sealing the two sides of the vertical section of the rail; start the driving mechanism 3 to move to the upper side of the joint between the two sections of the rail, and place an iron plate at the bottom of the horizontal section of the rail, and abut the iron plate against the lower side of the horizontal section of the rail through the upper end of the sealing plate 11, thereby completely sealing the connection between the two sections of the rail;

[0039] The electric heaters 12 on the two sealing plates 11 are started to heat the sealing plates 11 through the electric heaters 12, and the sealing plates 11 preheat the rails, thereby improving the welding effect of the solder and preventing the solder from cooling too quickly and causing more gaps inside the weld; then, high-temperature solder is poured into the guide mechanism 4, and the high-temperature solder enters the joints between the two sections of the guide rails for welding. The slots 14 on the sealing plates 11 are opposite to the welds of the rails. When the solder flows downward and flows into the slots 14, the leveling mechanism 8 is started at this time. The leveling mechanism 8 can fill the solder in the slots 14 to the welding position, thereby improving the density of the weld.

[0040] like Figure 5 As shown, a railway track welding protection device provided by the present invention, the leveling mechanism 8 includes a third electric rod 81, a slide plate 82, a scraper 83 and a pressure plate 84;

[0041] A slide plate 82 is slidably connected to the sealing plate 11, and the slide plate 82 seals one side end surface of the slot hole 14. A No. 3 electric rod 81 is fixedly connected to the sealing plate 11, and the telescopic part of the No. 3 electric rod 81 is fixedly connected to the slide plate 82. The slide plate 82 is slidably connected to a plurality of scrapers 83 and a plurality of pressure plates 84. The scrapers 83 and the pressure plates 84 are arranged at intervals, and all the scrapers 83 are connected to the inner cavity surface of the slide plate 82 through elastic push springs, and all the pressure plates 84 are fixedly connected to the inner cavity surface of the slide plate 82 through elastic tension springs.

[0042] In this embodiment, when the solder flows downward into the slot 14, the excess solder at this time can easily bond and fix the sealing plate 11 to the side wall of the rail, and the No. 3 electric rod 81 is started to extend and retract. The No. 3 electric rod 81 drives the slide plate 82 to slide back and forth on the outer side of the sealing plate 11, and the slide plate 82 drives the scraper 83 connected to it to move back and forth vertically along the side of the rail, so that the excess solder flowing out of the rail is flattened along the weld by the scraper 83, and at the same time, the solder is prevented from filling into the slot 14 to bond the sealing plate 11 to the side of the rail.

[0043] like Figure 5 As shown, a railway track welding protection device provided by the present invention is provided, each scraper 83 is provided with an exhaust hole 85 near the root, the air hole 85 is connected with the inner cavity of the slide plate 82, the slide plate 82 is fixedly connected with an air pump 86 and a filter box 87, the air pump 86 is connected with the slide plate 82 and the filter box 87, and the air pump 86 is also provided with an air inlet pipe connected to the outside.

[0044] In this embodiment, when the grinding mechanism 7 grinds the side of the vertical section of the rail, the scraper 83 extends to the outside of the sealing plate 11 under the action of the elastic push spring and all the scrapers 83 are in contact with the side of the vertical section of the rail. At this time, the driving mechanism 3 drives the grinding mechanism 7 on the sealing plate 11 to move horizontally to grind the side of the vertical section of the rail. At this time, the scraper 83 moves along the side of the vertical section of the rail and scrapes off the excess rust on the side of the vertical section of the rail. The air pump 86 is started, and the air pump 86 sucks air through all the air holes 85 on the scraper 83, thereby sucking the waste polished by the grinding mechanism 7 into the filter box 87;

[0045] When welding, the electric telescopic rod 6 pushes the sealing plate 11 to fit the side of the vertical section of the rail. At this time, the grinding mechanism 7 shrinks into the strip groove 9, all the scrapers 83 shrink into the slot 14, and all the air holes 85 on the scraper 83 shrink into the slide plate 82, so that the solder during welding will not flow into the air holes 85. When the excess solder fills the slot 14, the No. 3 electric rod 81 is started to drive the slide plate 82 to move back and forth vertically. The slide plate 82 drives the scraper 83 to flatten the solder in the slot 14 toward the weld concave part. At this time, the air pump 86 is started to increase the air pressure in the slide plate 82. Since all the air holes 85 shrink into the slide plate 82 at this time, the inner cavity of the slide plate 82 remains closed. Under the action of air pressure, all the pressure plates 84 are squeezed into the slot 14, thereby squeezing the solder inside the slot 14 toward the weld, thereby increasing the density of the solder in the weld.

[0046] like Figure 6 and Figure 7 As shown, a railway track welding protection device provided by the present invention, the grinding mechanism 7 includes a second electric telescopic seat 71, a rotating roller 72 and a grinding strip 73;

[0047] A No. 2 electric telescopic seat 71 is fixedly arranged in the strip groove 9, and the telescopic part of the No. 2 electric telescopic seat 71 is rotatably connected to a roller 72. A motor for driving the roller 72 to rotate is arranged inside the telescopic part of the No. 2 electric telescopic seat 71, and a plurality of grinding strips 73 are arranged on the surface of the roller 72 along the circumferential direction.

[0048] In this embodiment, before welding, the No. 2 electric telescopic seat 71 is first started to extend, so that the roller 72 extends to the outside of the sealing plate 11. At this time, the roller 72 is started to rotate, and the No. 2 electric telescopic seat 71 is driven by the driving mechanism 3 to move along the side of the vertical section of the rail. The No. 2 electric telescopic seat 71 grinds the side of the vertical section of the rail, thereby improving the tightness of the sealing plate 11 when it fits with the side of the vertical section of the rail, and improving the sealing effect of the sealing plate 11 around the weld, avoiding leakage of the weld and burns to the operator after leakage;

[0049] After the grinding is completed, the second electric telescopic seat 71 is started to shrink the roller 72 into the strip groove 9. At this time, the electric telescopic rod 6 is started to push the sealing plate 11 to fit with the side of the vertical section of the rail, thereby sealing both sides of the weld of the vertical section of the rail.

[0050] like Figure 1 As shown, a railway track welding protection device provided by the present invention, the material guiding mechanism 4 includes a material guiding cylinder 41 and a telescopic material guiding sleeve 42, the material guiding cylinder 41 is fixedly connected to the support frame 10, and the bottom of the material guiding cylinder 41 is connected to the telescopic material guiding sleeve 42.

[0051] In this embodiment, the high-temperature solder is guided by the material guide tube 41, and the telescopic material guide sleeve 42 injects material into the weld. Under the protection of the material guide tube 41 and the telescopic material guide sleeve 42, the high-temperature solder splashing and scalding the staff can be avoided.

[0052] like Figure 2 As shown, a railway track welding protection device provided by the present invention, the driving mechanism 3 includes a sliding frame 31 and a No. 2 electric rod 32, the sliding frame 31 is horizontally slidably connected to the positioning plate 1, the sliding frame 31 is provided with an injection hole 13, the positioning plate 1 is fixedly connected to the No. 2 electric rod 32, and the telescopic part of the No. 2 electric rod 32 is fixedly connected to the sliding frame 31.

[0053] In this embodiment, the second electric rod 32 is activated to extend and retract, and the second electric rod 32 drives the sliding frame 31 to slide horizontally along the positioning plate 1. The sliding frame 31 can drive the grinding mechanisms 7 connected on both sides thereof to grind the side surfaces of the vertical rail segments, thereby improving the fit between the sealing plate 11 and the side surfaces of the vertical rail segments, and improving the sealing effect of the solder during welding.

[0054] like Figure 2As shown, a railway track welding protection device provided by the present invention, the clamping mechanism 2 includes a No. 1 electric rod 21, a slider 22 and a clamping plate 23;

[0055] The fixed portion of the first electric rod 21 is fixedly connected to the positioning plate 1 , the telescopic portion of the first electric rod 21 is fixedly connected to a slider 22 , and the slider 22 is slidably connected to a clamping plate 23 .

[0056] In this embodiment, the positioning plate 1 is placed above the two rail sections, and the clamping plates 23 around the rails are pushed to move toward the middle. Then, the No. 1 electric rod 21 is started to contract, and the two rail sections are clamped and fixed by the clamping plates 23.

[0057] Working principle:

[0058] Lay the positioning plate 1 flat on the upper sides of the two rail sections, start the clamping mechanism 2, fix the positioning plate 1 and the two rail sections through the clamping mechanism 2, and align the material guide mechanism 4 with the joint of the two rail sections;

[0059] Start the electric telescopic rod 6, which drives the sealing plate 11 close to the side of the vertical section of the rail. Before welding, first start the second electric telescopic seat 71 to extend, so that the roller 72 extends to the outside of the sealing plate 11. At this time, start the roller 72 to rotate, and drive the second electric telescopic seat 71 to move along the side of the vertical section of the rail through the driving mechanism 3. The second electric telescopic seat 71 grinds the side of the vertical section of the rail, thereby improving the tightness of the sealing plate 11 when it fits with the side of the vertical section of the rail, and improving the sealing effect of the sealing plate 11 around the weld to avoid leakage of welds and burns to operators after leakage;

[0060] At this time, the scraper 83 extends out of the sealing plate 11 under the action of the elastic push spring and all the scrapers 83 are in contact with the side of the rail vertical section. At this time, the driving mechanism 3 drives the grinding mechanism 7 on the sealing plate 11 to move horizontally to grind the side of the rail vertical section. At this time, the scraper 83 moves along the side of the rail vertical section and scrapes off the excess rust on the side of the rail vertical section. The air pump 86 is started, and the air pump 86 sucks air through all the air holes 85 on the scraper 83, thereby sucking the waste polished by the grinding mechanism 7 into the filter box 87;

[0061] After the grinding is completed, the second electric telescopic seat 71 is started to retract the roller 72 into the strip groove 9, and the electric telescopic rod 6 is started to push the sealing plate 11 to fit with the side of the vertical section of the rail, so as to seal both sides of the weld of the vertical section of the rail; the driving mechanism 3 is started to move to the upper side of the joint between the two sections of the rail, and an iron plate is placed at the bottom of the horizontal section of the rail, and the iron plate is abutted against the lower side of the horizontal section of the rail through the upper end of the sealing plate 11, so as to completely seal the connection between the two sections of the rail;

[0062] When welding, the electric telescopic rod 6 pushes the sealing plate 11 to fit the side of the vertical section of the rail, and the grinding mechanism 7 is retracted into the strip groove 9, all the scrapers 83 are retracted into the slots 14, and all the pores 85 on the scrapers 83 are retracted into the slide plate 82, so that the solder during welding will not flow into the pores 85;

[0063] The electric heaters 12 on the two sealing plates 11 are started to heat the sealing plates 11 through the electric heaters 12, and the sealing plates 11 preheat the rails, thereby improving the welding effect of the solder and preventing the solder from cooling too quickly to cause more gaps inside the weld;

[0064] Afterwards, high-temperature solder is poured into the material guide mechanism 4, and the high-temperature solder enters the joint between the two sections of the guide rail for welding. The slot hole 14 is opposite to the weld of the rail. When excess solder is filled into the slot hole 14, the No. 3 electric rod 81 is started to drive the slide plate 82 to move vertically back and forth. The slide plate 82 drives the scraper 83 to flatten the solder in the slot hole 14 toward the weld concave part. At this time, the air pump 86 is started to increase the air pressure in the slide plate 82. Since all the air holes 85 are contracted into the slide plate 82 at this time, the inner cavity of the slide plate 82 remains closed. Under the action of air pressure, all the pressure plates 84 are squeezed into the slot hole 14, thereby squeezing the solder inside the slot hole 14 toward the weld, thereby increasing the density of the solder in the weld.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0066] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A railway track welding protection device, comprising a positioning plate (1), characterized in that: Four clamping mechanisms (2) are arranged in a rectangular shape on the positioning plate (1); a support frame (10) is fixedly connected to the upper end surface of the positioning plate (1); and a material guiding mechanism (4) is fixedly connected to the support frame (10); The positioning plate (1) is provided with a driving mechanism (3), and both ends of the driving mechanism (3) are fixedly connected to a first electric telescopic seat (5) capable of vertical extension and contraction, the telescopic portion of the first electric telescopic seat (5) is fixedly connected to an electric telescopic rod (6) capable of horizontal extension and contraction, the telescopic portion of the electric telescopic rod (6) is fixedly connected to a sealing plate (11), and an electric heater (12) is provided on the sealing plate (11), and the driving mechanism (3) is capable of driving the sealing plate (11) to move horizontally; The sealing plate (11) is provided with two strip grooves (9), each strip groove (9) is provided with a grinding mechanism (7), and the grinding mechanism (7) is capable of grinding the surface of the vertical section of the rail; a slot hole (14) is provided in the middle of the sealing plate (11), and a leveling mechanism (8) is provided on the sealing plate (11), and the leveling mechanism (8) is capable of filling the welded part; The leveling mechanism (8) comprises a third electric rod (81), a slide plate (82), a scraper (83) and a pressure plate (84); the sealing plate (11) is slidably connected to the slide plate (82), the slide plate (82) seals one side end surface of the slot hole (14), the sealing plate (11) is fixedly connected to the third electric rod (81), the telescopic portion of the third electric rod (81) is fixedly connected to the slide plate (82), the slide plate (82) is slidably connected to a plurality of scrapers (83) and a plurality of pressure plates (84), the scrapers (83) and the pressure plates (84) are arranged at intervals, all the scrapers (83) are connected to the inner cavity surface of the slide plate (82) via elastic push springs, and all the pressure plates (84) are fixedly connected to the inner cavity surface of the slide plate (82) via elastic tension springs; Each scraper (83) is provided with an exhaust hole (85) near the root thereof, the exhaust hole (85) being in communication with the inner cavity of the slide plate (82), the slide plate (82) being fixedly connected with an air pump (86) and a filter box (87), the air pump (86) being in communication with the slide plate (82) and the filter box (87), and the air pump (86) being further provided with an air inlet pipe connected to the outside.

2. The railway track welding protection device according to claim 1, characterized in that: The grinding mechanism (7) comprises a second electric telescopic seat (71), a rotating roller (72) and a grinding strip (73); A No. 2 electric telescopic seat (71) is fixedly arranged in the strip groove (9); the telescopic portion of the No. 2 electric telescopic seat (71) is rotatably connected to a rotating roller (72); a motor for driving the rotating roller (72) to rotate is arranged inside the telescopic portion of the No. 2 electric telescopic seat (71); and a plurality of grinding strips (73) are arranged on the surface of the rotating roller (72) along the circumferential direction.

3. The railway track welding protection device according to claim 1, characterized in that: The material guiding mechanism (4) comprises a material guiding cylinder (41) and a telescopic material guiding sleeve (42); the material guiding cylinder (41) is fixedly connected to the support frame (10); and the bottom of the material guiding cylinder (41) is connected to the telescopic material guiding sleeve (42).

4. The railway track welding protection device according to claim 1, characterized in that: The driving mechanism (3) comprises a sliding frame (31) and a second electric rod (32); the sliding frame (31) is horizontally slidably connected to the positioning plate (1); a material injection hole (13) is provided on the sliding frame (31); the second electric rod (32) is fixedly connected to the positioning plate (1); and a telescopic portion of the second electric rod (32) is fixedly connected to the sliding frame (31).

5. The railway track welding protection device according to claim 1, characterized in that: The clamping mechanism (2) comprises a first electric rod (21), a slider (22) and a clamping plate (23); The fixed portion of the first electric rod (21) is fixedly connected to the positioning plate (1), the telescopic portion of the first electric rod (21) is fixedly connected to a slider (22), and the slider (22) is slidably connected to a clamping plate (23).

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