Multifunctional maintenance car for rail transit

Abstract

The invention discloses a multifunctional maintenance car for rail transit, and relates to the technical field of rail maintenance. Comprising a power maintenance car running on a track, and further comprises a snow removing mechanism which is used for removing a snowflake layer on the track when the power maintenance car moves on the track; the ice crushing mechanism is used for damaging an icing layer on the track and forming smaller ice blocks or ice residues for subsequent cleaning; the cleaning mechanism is used for cleaning ice blocks on the upper surface of the track; the snow removing mechanism, the ice crushing mechanism and the cleaning mechanism are sequentially arranged and installed on the rail car from left to right. When the maintenance car moves, snow removal, ice breaking and cleaning operation can be sequentially carried out through the snow removal mechanism, the ice breaking mechanism and the cleaning mechanism, snowflake layers and icing layers on the track can be thoroughly and effectively removed, and a good basic face is provided for subsequent flaw detection operation.

Description

Technical Field

[0001] The present invention relates to the technical field of track maintenance, and in particular to a multifunctional maintenance vehicle for rail transportation. Background Art

[0002] Track maintenance vehicles (currently powered by electricity or gasoline) are mainly used to carry personnel or inspection equipment and travel on the track to facilitate personnel or inspection equipment to detect various track data. Track maintenance vehicles are important tools for detecting track status and ensuring normal use of the track.

[0003] In the cold northern regions, the average daily temperature is often below zero. In this environment, the problem of icing on railway tracks is particularly prominent, which requires workers to manually remove the snow layer and ice layer on the upper end of the rails before performing flaw detection on the rails so that the flaw detection head can better contact the upper end of the rails and improve the flaw detection accuracy. Manually removing the snow layer and ice layer is time-consuming and labor-intensive. There is an urgent need for a maintenance vehicle that can automatically remove the snow layer and ice layer on the upper end of the rails during movement. Therefore, this application provides a multi-functional maintenance vehicle for rail transit to meet the needs. Summary of the Invention

[0004] The purpose of this application is to provide a multifunctional rail maintenance vehicle for rail transit, which is used to solve the technical problem that existing rail maintenance vehicles cannot automatically remove the snow layer and ice layer on the upper end of the rails.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a multifunctional maintenance vehicle for rail transit, comprising a power maintenance vehicle traveling on a track, and further comprising a snow removal mechanism: when the power maintenance vehicle moves on the track, the snow layer on the track is removed; Ice crushing mechanism: used to break the ice layer on the track and form smaller ice blocks or ice debris for subsequent cleaning; Cleaning mechanism: used for cleaning ice on the upper surface of the track; The snow removal mechanism, the ice crushing mechanism and the cleaning mechanism are sequentially arranged from left to right and installed on the rail vehicle.

[0006] As a preferred implementation in this embodiment, the snow removal mechanism includes a mounting plate fixedly arranged at the bottom of the front end of the power maintenance vehicle, a push plate is installed at the front end of the mounting plate, and a hollow guide plate with an isosceles triangle structure is installed at the front end of the push plate; The ice crushing mechanism includes a U-shaped plate with a rotating drum, the rotating drum is driven by a drive motor installed on the U-shaped plate, the rotating drum is densely covered with pull ropes, and a crushing ball is fixed to the end of each pull rope, and the U-shaped plate is installed on the mounting plate; The cleaning mechanism includes a pipe installed on the power maintenance vehicle, and the upper end of the pipe is connected to the air outlet of the air compressor installed on the power maintenance vehicle, and the lower end of the pipe is inclined outwardly and provided with multiple groups of air injection pipes; A baffle is installed on the mounting plate and located on the right side of the rotating drum.

[0007] As a preferred implementation in this embodiment, two sets of square rods are provided at the bottom of the power maintenance vehicle, and the mounting plate is slidably penetrated by the square rods; The pipeline includes a fixed pipeline fixedly installed on the power maintenance vehicle, a moving pipeline is slidably arranged in the inner cavity of the fixed pipeline, multiple groups of injection pipes are arranged at the lower end of the moving pipeline, an elastic sleeve is fixed on the outer wall of the moving pipeline, and the outer wall of the elastic sleeve is in sliding contact with the inner wall of the fixed pipeline.

[0008] As a preferred implementation in this embodiment, the swing mechanism is used to drive the rotating drum to swing back and forth in a small amplitude in the horizontal direction.

[0009] As a preferred implementation manner in this embodiment, the swing mechanism includes a mounting frame mounted on the mounting plate, a reciprocating screw is rotatably provided on the mounting frame, the reciprocating screw is driven by a swing motor mounted on the mounting frame, a reciprocating nut is sleeved on the reciprocating screw, and a toothed plate is mounted on the side end of the reciprocating nut; A rotating shaft is fixed at the axis center of the upper end of the U-shaped plate, and the lower end of the rotating shaft is rotatably arranged on the mounting plate. A gear meshing with the gear plate is fixed at the upper end of the rotating shaft.

[0010] As a preferred implementation in this embodiment, an automatic adjustment unit is further provided, which can automatically adjust the rotation speed of the drum and the airflow intensity of the air injection pipe according to the thickness of the ice layer on the track.

[0011] As a preferred implementation in this embodiment, the automatic adjustment unit includes two sets of current regulators and a column fixedly arranged on the upper end of the mounting plate, the two sets of current regulators are fixed to the bottom of the power maintenance vehicle, and the two sets of current regulators are electrically connected to the air compressor and the drive motor respectively; The adjusting knobs of the two sets of current regulators are both provided with grooves, and the grooves include vertical grooves and arc-shaped grooves connected together from top to bottom; Sliding rods are provided on both groups of upright posts, and the outer ends of the sliding rods are located in the grooves.

[0012] As a preferred implementation in this embodiment, the push plates are arranged in two groups at intervals, and the gap between the two groups of push plates is larger than the gap between two adjacent rails; Contact heads are fixed to the lower ends of the two groups of push plates, and guide inclined surfaces are provided on both side ends of the contact heads.

[0013] As a preferred implementation scheme in this embodiment, a hot nozzle and an insulation pipe with a long spiral electric heating pipe inside are also provided. The left end of the insulation pipe is connected to the air inlet end of the hot nozzle through an insulation hose. The hot nozzle is installed on the push plate, and the right end of the insulation pipe is connected to the air outlet end of the air compressor.

[0014] In summary, the technical effects and advantages of the present invention are as follows: The present invention has a reasonable structure. When the maintenance vehicle is moving, it can sequentially perform snow removal, ice breaking and cleaning operations through the snow removal mechanism, ice crushing mechanism and cleaning mechanism, which can thoroughly and effectively remove the snow layer and ice layer on the track, providing a good foundation for subsequent flaw detection operations. In the present invention, the mounting plate is movably arranged on the square rod. When the lower end of the push plate moves on ice layers of different thicknesses, it can adaptively adjust and maintain a certain distance between the rotating drum, the air injection pipe and the upper end of the track. The present invention is also provided with a swinging structure. The original rotating drum only drives the crushing balls to do circular motion by rotating, and the knocking points are concentrated on a fixed track. The swinging structure is provided, and the rotating drum swings horizontally to make the trajectory movement of the crushing balls more diversified, so that the ice layer can be knocked more comprehensively. In the present invention, an automatic adjustment unit is also provided, which can automatically adjust the rotation speed of the drum and the air flow intensity of the jet pipe according to the thickness of the ice layer on the track, so as to completely remove the ice layer while avoiding excessive power loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 for Figure 1 Schematic diagram of the front view of the snow removal mechanism, ice crushing mechanism and cleaning mechanism; Figure 3 for Figure 2 Schematic diagram of the middle and rear view structure; Figure 4 for Figure 3 Schematic diagram of the ice crushing mechanism structure; Figure 5 for Figure 2 Schematic diagram of the structure of the medium current regulator; Figure 6 Installation diagram of the inspection vehicle and track; Figure 7 Schematic diagram of the drum swing angle; Figure 8 This is the installation position diagram of the hot nozzle and insulation pipe.

[0017] Figure: 1. Power maintenance vehicle; 2. Snow removal mechanism; 201. Mounting plate; 202. Push plate; 203. Hollow guide plate; 204. Guide ramp; 205. Baffle; 3. Ice crushing mechanism; 301. U-shaped plate; 302. Rotating drum; 303. Drive motor; 304. Pull rope; 305. Crushing ball; 306. Rotating shaft; 307. Gear; 308. Mounting bracket; 309. Swing motor; 310. Reciprocating nut. 311. Tooth plate; 312. Reciprocating screw; 4. Cleaning mechanism; 401. Fixed pipe; 402. Moving pipe; 403. Jet pipe; 5. Automatic adjustment unit; 501. Current regulator; 502. Adjustment knob; 503. Vertical groove; 504. Arc groove; 505. Column; 506. Sliding rod; 6. Square rod; 7. Track; 8. Ice layer; 9. Snow layer; 10. Insulation pipe; 11. Hot spray pipe. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example: Reference Figure 1 The multifunctional maintenance vehicle for rail transit shown includes a power maintenance vehicle 1 traveling on a track 7 and a snow removal mechanism 2 : when the power maintenance vehicle 1 moves on the track 7 , the snow layer 9 on the track 7 is removed; Ice crushing mechanism 3: used to break the ice layer 8 on the track 7 and form smaller ice blocks for subsequent cleaning; Cleaning mechanism 4: used to clean ice on the upper surface of track 7; The snow removal mechanism 2 , the ice crushing mechanism 3 and the cleaning mechanism 4 are sequentially arranged and installed on the rail vehicle 7 from left to right.

[0020] When the power maintenance vehicle 1 moves on the track 7, the snowflake layer 9 on the upper end of the track 7 is removed by the snow removal mechanism 2 arranged thereon, thereby exposing the ice layer 9, and the ice layer 8 is destroyed by the ice crushing mechanism 3 to form smaller ice blocks, and then the cleaning mechanism 4 is used to clear the smaller ice blocks or some powdered ice residue from the upper surface of the track 7.

[0021] As a preferred implementation in this embodiment, Figure 1-4 As shown, the snow removal mechanism 2 includes a mounting plate 201 fixedly mounted on the bottom front end of the power maintenance vehicle 1, a push plate 202 is mounted on the front end of the mounting plate 201, and a hollow guide plate 203 with an isosceles triangle structure is mounted on the front end of the push plate 202; The ice crushing mechanism 3 includes a U-shaped plate 301 on which a rotating drum 302 is rotatably mounted. The rotating drum 302 is driven by a drive motor 303 mounted on the U-shaped plate 301. Drawstrings 304 are densely distributed on the rotating drum 302, and a crushing ball 305 is fixed to the end of each drawstring 304. The U-shaped plate 301 is mounted on the mounting plate 201. The cleaning mechanism 4 includes a pipe installed on the power maintenance vehicle 1, and the upper end of the pipe is connected to the air outlet of the air compressor installed on the power maintenance vehicle 1, and the lower end of the pipe is inclined outward and provided with multiple groups of air injection pipes 403; A baffle 205 is installed on the mounting plate 201 and located on the right side of the rotating drum 302 .

[0022] Before use, Figure 6 As shown, the snow layer 9 and the ice layer 8 on the portion of the rail 7 where the power maintenance vehicle 1 is placed are manually removed, so that the lower end of the push plate 202 contacts the upper end of the ice layer 8, and the front end of the push plate 202 contacts the snow layer 9. At the same time, the wheelset of the power maintenance vehicle 1 contacts the upper end of the rail 7 where the snow layer 9 and the ice layer 8 have been removed. When in use, the power maintenance vehicle 1 is controlled to move on the track 7. When moving, the hollow guide plate 203 of the isosceles triangle structure at the front end of the push plate 202 will be inserted into the snow layer 9. With the movement of the push plate 202 and the guiding effect of the inclined surface of the hollow guide plate 203, the snow layer 9 will be separated and move to the two sides, and finally leave the track 7. After the ice layer 8 is exposed, the rotating drum 302 uses the crushing balls 305 on it to collide with the ice layer 8 on the rail 7 to break the ice layer 9, and then uses the inclined air injection pipe 403 to spray high-pressure gas to blow the formed small ice cubes or ice debris to the side of the rail 7 and finally separate from the rail 7; In this design, the snow layer 9 on the upper end of the track 7 is first removed by the provided snow removal mechanism 2, thereby exposing the ice layer 9 (to avoid the inability to completely destroy the ice layer by directly using the ice crushing mechanism 3), and then the ice layer 8 is destroyed by the ice crushing mechanism 3 to form smaller ice cubes, and then the cleaning mechanism 4 is used to clear the smaller ice cubes or some powdered ice residue from the upper surface of the track 7, which can effectively remove the covering on the track 7 and provide convenience for subsequent flaw detection.

[0023] It should be noted that: first, the baffle 205 is provided to prevent ice debris or ice cubes from splashing onto the rail 7 that has passed behind when the ice crushing mechanism 3 is working, thereby affecting the subsequent flaw detection; second, in order to reduce the friction between the lower end of the push plate 202 and the upper end surface of the ice layer 8, a ball bearing can be provided at the lower end of the push plate 202. At the same time, the provision of the ball bearing can enhance the squeezing of the ice layer 8, which is conducive to crushing or fracturing the ice layer 8 (only for thinner ice layers 8), assisting in breaking the ice layer 8, and facilitating the complete removal of the ice layer 8 on the upper end of the track 7; third, the lower end of the baffle 205 is at a certain height from the upper end of the track 7, allowing the generated ice cubes or ice debris to pass from the bottom of the baffle 205 Fourth, all the above-mentioned electrical equipment are electrically connected to the pLC controller on the power inspection vehicle 1, and the power inspection vehicle 1 is provided with a power supply for providing electrical energy to each electrical equipment; Fifth, the push plate 202 can be set at a certain inclination angle to the rail 7, so that the push plate 202 has a guiding effect on the snow when moving, and then guides the snow to one side of the track 7; Sixth, when the crushing ball 305 hits the track 7, the track will vibrate, and the vibration helps to expose or expand the tiny cracks on the track. These cracks that may have been difficult to detect may become more obvious under the action of vibration, so that they are easier to detect during the flaw detection process, thereby improving the accuracy of flaw detection.

[0024] As a preferred implementation in this embodiment, Figure 2 As shown, two sets of square rods 6 are provided at the bottom of the power maintenance vehicle 1, and the mounting plate 201 is slidably penetrated by the square rods 6; The pipeline includes a fixed pipeline 401 fixedly installed on the power maintenance vehicle 1, a moving pipeline 402 is slidably arranged in the inner cavity of the fixed pipeline 401, multiple groups of injection pipes 403 are arranged at the lower end of the moving pipeline 402, an elastic sleeve is fixed on the outer wall of the moving pipeline 402, and the outer wall of the elastic sleeve slides against the inner wall of the fixed pipeline 401.

[0025] Since the mounting plate 201 can slide on the square rod 6, the push plate 202 can move up and down. When the lower end of the push plate 202 moves from the thinner ice layer 8 to the thicker ice layer 8, its mounting plate 201 will slowly move upward, thereby adaptively driving the rotating drum 302 (maintaining a certain height of space between the rotating drum 302 and the upper end of the ice layer 8 is conducive to the rotating pull rope 304 driving the crushing ball 305 to form a more intense collision with the ice layer 8. If the rotating drum 302 is too close to the ice layer 8, the rotation of the pull rope 304 will be hindered, and the crushing ball 305 cannot be driven to form a more intense collision with the ice layer 8) and the air jet 403 to move upward (maintaining a certain distance from the ice layer 8 is conducive to the strong airflow covering the entire end of the track 7).

[0026] It should be noted that positioning holes can be set on both the square rod 6 and the mounting plate 201. When not in use, the mounting plate 201 can be moved up and the positioning pins can be inserted into the two positioning holes to limit the position of the mounting plate 201 to prevent the push plate 202 and the lower end of the crushing ball 305 from contacting and rubbing with the ground when the wheelset of the power maintenance trolley 1 rolls in contact with the ground.

[0027] As a preferred implementation in this embodiment, a swing mechanism is further provided to drive the rotating drum 302 to swing back and forth in a small amplitude in the horizontal direction.

[0028] The original rotating drum 302 only drives the crushing balls 305 to do circular motion by rotating, and the knocking points are concentrated on a fixed track. The swing structure is set, and the horizontal swing of the two ends of the rotating drum 302 makes the trajectory movement of the crushing balls 305 more diversified, and can knock the ice layer 8 more comprehensively.

[0029] As a preferred implementation in this embodiment, Figure 3 and Figure 4 As shown, the swing mechanism includes a mounting frame 308 mounted on the mounting plate 201, a reciprocating screw rod 312 is rotatably provided on the mounting frame 308, and the reciprocating screw rod 312 is driven by a swing motor 309 mounted on the mounting frame 308. A reciprocating nut 310 is sleeved on the reciprocating screw rod 312, and a tooth plate 311 is mounted on the side end of the reciprocating nut 310; A rotating shaft 306 is fixed at the axis center of the upper end of the U-shaped plate 301 , and the lower end of the rotating shaft 306 is rotatably mounted on the mounting plate 201 . A gear 307 meshing with the gear plate 311 is fixed to the upper end of the rotating shaft 306 .

[0030] During operation, the swing motor 309 is controlled to control the reciprocating screw rod 312 to rotate, so that the reciprocating nut 310 drives the gear plate 311 to move back and forth, and then through the cooperation of the gear 307 and the rotating shaft 306, the rotating drum 302 is finally made to swing back and forth in a small amplitude in the horizontal direction, which can increase the trajectory movement of the crushing ball 305 to be more diversified, and can more comprehensively knock on the ice layer 8, which is conducive to the subsequent complete removal of the ice layer 8.

[0031] It should be noted that: the swing trajectory of the drum 302 is as follows: Figure 7 As shown, the swing angle θ of the drum 302 along the central axis to both sides is controlled between 5° and 9°. If the angle is too small, it is still close to the fixed trajectory of the original design and cannot fully utilize the angle diversity brought by the swing; if the angle is too small, it is easy to cause the crushing ball 305 to move out of control, and the coupling of the centrifugal motion of the crushing ball 305 and the swing may cause the pull rope 304 to be entangled, resulting in a decrease in the ice-breaking effect.

[0032] As a preferred implementation in this embodiment, an automatic adjustment unit 5 is further provided, which can automatically adjust the rotation speed of the drum 302 and the air flow intensity of the air injection pipe 403 according to the thickness of the ice layer 8 on the track 7.

[0033] As the thickness of the ice layer 8 increases, the rotation speed of the drum 302 needs to be increased accordingly to increase the impact strength between the crushing balls 305 and the ice layer 8; when the thickness of the ice layer 8 decreases, the rotation speed of the drum 302 needs to be reduced accordingly to reduce power loss; As the thickness of the ice layer 8 increases, more ice cubes or ice debris will be produced after being crushed, and the airflow intensity of the air jet pipe 403 increases to quickly and thoroughly remove the ice cubes or ice debris on it; when the thickness of the ice layer 8 decreases, fewer ice cubes or ice debris will be produced after being crushed, and the airflow intensity of the air jet pipe 403 decreases, reducing power loss.

[0034] As a preferred implementation in this embodiment, Figure 2 and Figure 5 As shown, the automatic adjustment unit 5 includes two sets of current regulators 501 and a column 505 fixedly arranged on the upper end of the mounting plate 201. The two sets of current regulators 501 are fixed to the bottom of the power maintenance vehicle 1. The two sets of current regulators 501 are electrically connected to the air compressor and the drive motor 303 respectively. The adjusting knobs 502 of the two sets of current regulators 501 are both provided with grooves, which include a vertical groove 503 and an arc-shaped groove 504 connected from top to bottom; Sliding rods 506 are provided on both sets of upright posts 505 , and the outer ends of the two sets of sliding rods 506 are located in the grooves.

[0035] When the thickness of the ice layer 8 increases, the mounting plate 201 drives the upright 505 to move upward, which in turn rotates the adjusting knob 502 via the sliding rod 506. This increases the current flowing into the air compressor and the drive motor 303, thereby increasing the power of the air compressor and the drive motor 303, and ultimately increasing the rotation speed of the drum 305 and the airflow intensity of the air jet pipe 403. Correspondingly, when the thickness of the ice layer 8 decreases, the current flowing into the air compressor and the drive motor 303 increases, and finally the rotation speed of the drum 305 and the air flow intensity of the air jet pipe 403 are reduced; The automatic adjustment unit 5 can automatically perform adaptive adjustment.

[0036] As a preferred implementation in this embodiment, Figure 2 As shown, two groups of push plates 202 are arranged at intervals, and the gap between the two groups of push plates 202 is larger than the gap between two adjacent tracks 7; Contact heads are fixed to the lower ends of the two sets of push plates 202 , and guide slopes 204 are provided on both side ends of the contact heads.

[0037] When installing the existing rails 7, in order to avoid the influence of thermal expansion and contraction between the rails 7, there is a gap between the ends of adjacent rails 7, and there is a certain height difference between the upper end surfaces of the rails 7 at the adjacent ends due to soil environmental factors, so two groups of push plates 202 are set, and the gap between the two groups of push plates 202 is larger than the gap between the two adjacent rails 7, which can avoid the lower end of the push plate 202 being inserted into the gap and hindering the movement of the push plate 202. At the same time, guide slopes 204 are set on both side ends of the contact head, and the guide slopes 204 can contact the guide slopes 204 of the push plate 202 and lift the mounting plate 201, so that the push plate 202 can smoothly cross this gap.

[0038] It should be noted that the lower end of the hollow guide plate 203 is located above the contact head.

[0039] As a preferred implementation in this embodiment, Figure 8 As shown, a hot nozzle 11 and an insulation pipe 10 with a long spiral electric heating pipe inside are also provided. The left end of the insulation pipe 10 is connected to the air inlet end of the hot nozzle 11 through an insulation hose. The hot nozzle 11 is installed on the push plate 202, and the right end of the insulation pipe 10 is connected to the air outlet end of the air compressor.

[0040] The gas is heated by using a long spiral electric heating tube, and the heated gas is ejected from the hot nozzle 11 to heat the ice layer 8, thereby reducing the bonding strength between the ice cubes in the ice layer 8 and the upper end of the track 7 or even separating the two, which is beneficial to the subsequent breaking and thorough cleaning of the ice layer 8.

[0041] It should be noted that its long spiral electric heating tube can be electrically connected to a group of current regulators 501 in the automatic adjustment unit 5. When the ice layer 8 becomes thicker, the mounting plate 201 rises, and the power of the electric heating tube increases, accelerating the heating of the air to quickly reduce the adhesion between the ice cubes in the ice layer 8 and the upper end of the track 7. On the contrary, when the ice layer 8 becomes thinner, the mounting plate 201 rises, and the power of the electric heating tube decreases, saving electricity. It can be adaptively adjusted, which can meet the needs of reducing the adhesion strength between the ice layer 8 and the track 7 and saving electricity.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multifunctional maintenance vehicle for rail transportation, comprising a power maintenance vehicle (1) traveling on a track (7), characterized in that: It also includes a snow removal mechanism (2) for removing a snow layer (9) on the track (7) when the power maintenance vehicle (1) moves on the track (7); Ice crushing mechanism (3): used to break the ice layer (8) on the track (7) and form smaller ice blocks or ice debris for subsequent cleaning; Cleaning mechanism (4): used for cleaning ice on the upper surface of the track (7); The snow removal mechanism (2), the ice crushing mechanism (3) and the cleaning mechanism (4) are sequentially arranged from left to right and installed on the rail vehicle (7).

2. A multifunctional maintenance vehicle for rail transit according to claim 1, characterized in that: The snow removal mechanism (2) comprises a mounting plate (201) fixedly arranged at the bottom of the front end of the power maintenance vehicle (1), a push plate (202) being mounted at the front end of the mounting plate (201), and a hollow guide plate (203) having an isosceles triangle structure being mounted at the front end of the push plate (202); The ice crushing mechanism (3) comprises a U-shaped plate (301) rotatably provided with a rotating drum (302), the rotating drum (302) being driven by a driving motor (303) mounted on the U-shaped plate (301), the rotating drum (302) being densely covered with pull ropes (304), and a crushing ball (305) being fixed to the end of each pull rope (304), and the U-shaped plate (301) being mounted on the mounting plate (201); The cleaning mechanism (4) includes a pipe installed on the power maintenance vehicle (1), and the upper end of the pipe is connected to the air outlet of the air compressor installed on the power maintenance vehicle (1), and the lower end of the pipe is inclined outward and provided with multiple groups of air injection pipes (403); A baffle (205) is installed on the mounting plate (201) and located on the right side of the rotating drum (302).

3. The multifunctional maintenance vehicle for rail transit according to claim 2, characterized in that: Two groups of square rods (6) are provided at the bottom of the power maintenance vehicle (1), and the mounting plate (201) is slidably penetrated by the square rods (6); The pipeline includes a fixed pipeline (401) fixedly installed on the power maintenance vehicle (1), a moving pipeline (402) is slidably provided in the inner cavity of the fixed pipeline (401), a plurality of groups of the jet pipes (403) are arranged at the lower end of the moving pipeline (402), an elastic sleeve is fixed on the outer wall of the moving pipeline (402), and the outer wall of the elastic sleeve is in sliding contact with the inner wall of the fixed pipeline (401).

4. The multifunctional maintenance vehicle for rail transit according to claim 3, characterized in that: A swing mechanism is also provided for driving the rotating drum (302) to swing back and forth in a small amplitude in the horizontal direction.

5. The multifunctional maintenance vehicle for rail transit according to claim 4, characterized in that: The swing mechanism comprises a mounting frame (308) mounted on the mounting plate (201), a reciprocating screw rod (312) being rotatably mounted on the mounting frame (308), the reciprocating screw rod (312) being driven by a swing motor (309) mounted on the mounting frame (308), a reciprocating nut (310) being sleeved on the reciprocating screw rod (312), and a tooth plate (311) being mounted on a side end of the reciprocating nut (310); A rotating shaft (306) is fixed at the axis center of the upper end of the U-shaped plate (301), and the lower end of the rotating shaft (306) is rotatably arranged on the mounting plate (201). A gear (307) meshingly connected to the toothed plate (311) is fixed at the upper end of the rotating shaft (306).

6. The multifunctional maintenance vehicle for rail transit according to claim 3, characterized in that: An automatic adjustment unit (5) is also provided, which can automatically adjust the rotation speed of the drum (302) and the air flow intensity of the air injection pipe (403) according to the thickness of the ice layer (8) on the track (7).

7. The multifunctional maintenance vehicle for rail transit according to claim 6, characterized in that: The automatic adjustment unit (5) includes two sets of current regulators (501) and a column (505) fixedly arranged on the upper end of the mounting plate (201), the two sets of current regulators (501) are fixed to the bottom of the power maintenance vehicle (1), and the two sets of current regulators (501) are electrically connected to the air compressor and the drive motor (303) respectively; The adjusting knobs (502) of the two sets of current regulators (501) are both provided with grooves, and the grooves include a vertical groove (503) and an arc-shaped groove (504) connected together from top to bottom; Slide rods (506) are provided on both groups of upright posts (505), and the outer ends of the two groups of slide rods (506) are located in the grooves.

8. The multifunctional maintenance vehicle for rail transit according to claim 2, characterized in that: The push plates (202) are arranged in two groups at intervals, and the gap between the two groups of push plates (202) is larger than the gap between two adjacent rails (7); Contact heads are fixed to the lower ends of the two groups of push plates (202), and guide slopes (204) are provided on both side ends of the contact heads; The lower end of the hollow guide plate (203) is located above the contact head.

9. The multifunctional maintenance vehicle for rail transit according to claim 2, characterized in that: A hot spray pipe (11) and an insulation pipe (10) with a long spiral electric heating pipe inside are also provided. The left end of the insulation pipe (10) is connected to the air inlet end of the hot spray pipe (11) through an insulation hose. The hot spray pipe (11) is installed on the push plate (202). The right end of the insulation pipe (10) is connected to the air outlet end of the air compressor.

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