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CN-122009089-A - Dustproof breathing structure of tread cleaning device for railway vehicle

CN122009089ACN 122009089 ACN122009089 ACN 122009089ACN-122009089-A

Abstract

The invention discloses a dustproof breathing structure of a tread sweeping device for a railway vehicle, which comprises a tread sweeping device main body, a corrugated pipe, a piston head and a dustproof filtering component, wherein one end of the corrugated pipe is connected with the piston head, the other end of the corrugated pipe is fixedly connected with the tread sweeping device main body, a sealing inner cavity for telescopic movement of a piston rod is formed by enclosing, a ventilation channel for realizing air exchange between the inner cavity and the external environment is formed at the corrugated pipe or the piston head, the piston head is fixedly connected with the piston rod and can axially telescopic movement along with the piston rod, the corrugated pipe can be driven to deform during movement so as to realize volume change of the sealing inner cavity, the dustproof filtering component is arranged on an air exchange path of the ventilation channel and can filter dust and impurities sucked in during air exchange, and the dustproof filtering component is matched with the ventilation channel to form an extended air inlet path.

Inventors

  • HUAN DONG
  • Sheng Taoming
  • WANG LEI
  • AN NING
  • LI LOUMING
  • TANG QUANCHENG

Assignees

  • 常州中车铁马科技实业有限公司
  • 中车戚墅堰机车车辆工艺研究所股份有限公司

Dates

Publication Date
20260512
Application Date
20260330

Claims (10)

  1. 1. A tread cleaning device dustproof breathing structure for a railway vehicle, comprising: A tread cleaning device main body (1); One end of the corrugated pipe (2) is connected with the piston head (3), the other end of the corrugated pipe is fixedly connected with the tread sweeping device main body (1) to form a sealed inner cavity for the telescopic movement of the piston rod, and a ventilation channel for realizing air exchange between the inner cavity and the external environment is formed at the corrugated pipe (2) or the piston head (3); a piston head (3) fixedly connected with the piston rod and capable of axially extending and retracting along with the piston rod, wherein the bellows (2) is driven to deform during the movement so as to realize the volume change of the sealed inner cavity, and Dustproof filter component, its set up in on the air exchange route of passageway of ventilating, can filter the in-process absorptive dust impurity of air exchange, just dustproof filter component cooperation the passageway of ventilating forms the inlet path of extension, and this dustproof breathing structure possesses self-cleaning ability, can blow off the dust impurity of adhesion on dustproof filter component and passageway surface of ventilating when the sealed inner chamber exhaust of bellows (2).
  2. 2. The tread cleaning device dust-proof breathing structure for railway vehicles according to claim 1, characterized in that one of the ventilation channels or the combined structure of dust-proof filter assemblies is provided at the piston head (3) or integrally at the bottom crest of the bellows (2).
  3. 3. The dust-proof breathing structure of tread cleaning apparatus for railway vehicle according to claim 2, wherein when the combined structure of the ventilation channel and the dust-proof filtering assembly is disposed at the piston head (3), a piston head air channel I (31) and a piston head air channel II (32) which are mutually communicated are processed on the piston head (3), the piston head air channel I (31) is communicated with the sealed inner cavity of the corrugated tube (2), and the piston head air channel II (32) is communicated with the external environment, and the two together form the ventilation channel.
  4. 4. The dust-proof breathing structure of the tread cleaning device for the railway vehicle according to claim 3, wherein the dust-proof filtering assembly comprises a filter (5) and a rubber air inlet pipe (4), the filter (5) is mounted at the joint of the piston rod head air passage II (32) and the external environment in a sealing manner, the rubber air inlet pipe (4) is sleeved outside the filter (5), and the rubber air inlet pipe (4) can prolong the air inlet path of air entering the piston rod head air passage II (32).
  5. 5. The dust-proof breathing structure of tread cleaning apparatus for railway vehicle as claimed in claim 4, wherein the filter (5) is embedded with a metal filter screen (51), the filter (5) is provided with a locking ring (52), the locking ring (52) is press-fitted into the inner cavity of the filter (5) and is abutted against the metal filter screen (51), and is used for fixing the metal filter screen (51) to prevent loosening and falling out.
  6. 6. The tread cleaning device dust-proof breathing structure for a railway vehicle according to claim 2, wherein when the combination structure of the ventilation passage and the dust-proof filter assembly is integrally provided at the bottom peak of the bellows (2), the ventilation passage is an elongated rubber air intake pipe (4) integrally formed at the bottom peak of the bellows (2), and the dust-proof filter assembly is an air intake grid (42) integrally formed at the inner wall of the rubber air intake pipe (4).
  7. 7. The dust-proof breathing structure of tread cleaning apparatus for railway vehicles according to claim 6, wherein the air intake grille (42) comprises an encrypting structure to promote the blocking or adsorbing effect of dust impurities in the air.
  8. 8. The tread cleaning apparatus dust-respiration structure for railway vehicles according to any one of claims 1 to 7, characterized in that the dust-proof filter assembly is a metal mesh filter structure or a cross-layered filter structure.
  9. 9. The tread cleaning device dust-proof breathing structure for railway vehicle according to any one of claims 1 to 7, wherein the rubber air intake pipe (4) is made of flexible rubber material to be folded and arranged according to the actual layout of the installation space to further lengthen the air intake path.
  10. 10. The tread cleaning device dust-proof breathing structure for railway vehicle according to any one of claims 1 to 7, wherein the rubber air inlet pipe (4) matched with the dust-proof filtering assembly is in interference sleeve joint with the filter (5) or the corrugated pipe (2), the free end of the rubber air inlet pipe (4) is of a flat open structure or an inclined plane incision structure without shielding, and the air inlet check (42) of the inner wall of the rubber air inlet pipe (4) is of a convex structure which is arranged in multiple layers along the axial direction of the pipe body and is uniformly distributed at intervals along the circumferential direction.

Description

Dustproof breathing structure of tread cleaning device for railway vehicle Technical Field The present disclosure relates generally to the field of track equipment technology. More particularly, the present disclosure relates to a tread cleaning device dust-proof breathing structure for a railway vehicle. Background Rail transit vehicles have become the primary means of transportation today, and their operational safety has been of constant interest. The wheel is used as an important running part of the bogie, the running safety of the train is directly affected when the tread is out of round, scratched, low-adhesion and the like, and the tread cleaning device can improve the tread condition of the wheel, improve the adhesion of a wheel rail, inhibit the tread out of round and the like, so the tread cleaning device is an indispensable part of the bogie. The train has a large amount of severe environments such as sand dust, rain snow and the like in the running process, and when the tread cleaning device moves the piston, the external environment and the inner cavity are isolated through the corrugated pipe, so that the cleanliness of the inner cavity is ensured. However, when the piston moves, the volume of the inner cavity of the corrugated pipe can change, so that the replacement of air inside and outside the corrugated pipe is an indispensable function. At present, the existing solution is to realize air exchange and filtration by arranging a filter, however, as the service time is increased, the filter is often failed due to blockage, so that abnormal collapse or flatulence of a corrugated pipe is caused, the corrugated pipe is finally broken, the internal environment of the tread cleaner is polluted, the action effect is reduced, and the service life of the tread cleaner is influenced. In view of the foregoing, there is a need for a dust-proof breathing structure of a tread cleaning device for a railway vehicle, so as to improve the pollution-preventing effect and avoid the blockage of the breathing structure. Disclosure of Invention In order to solve at least one or more of the technical problems mentioned above, the present disclosure proposes a tread cleaning device dust-proof breathing structure for a railway vehicle. The disclosure provides a dust-proof breathing structure of a tread sweeping device for a railway vehicle, which comprises a tread sweeping device main body, a corrugated pipe, a piston head and a dust-proof filtering component, wherein one end of the corrugated pipe is connected with the piston head, the other end of the corrugated pipe is fixedly connected with the tread sweeping device main body, a sealing inner cavity for telescopic movement of a piston rod is formed by enclosing the corrugated pipe or the piston head, a ventilation channel for realizing air exchange between the inner cavity and the external environment is formed in the corrugated pipe or the piston head, the piston head is fixedly connected with the piston rod and can axially telescopic movement along with the piston rod, the corrugated pipe can be driven to deform during movement so as to realize volume change of the sealing inner cavity, the dust-proof filtering component is arranged on an air exchange path of the ventilation channel and can filter dust impurities sucked in during air exchange, and the dust-proof filtering component is matched with the ventilation channel to form an extended air inlet path. In some embodiments, one of the vent passage or the combination of dust filter components is disposed at the piston head, or integrally disposed at the bottom peak of the bellows. In some embodiments, when the combined structure of the ventilation channel and the dustproof filtering component is arranged at the piston head, a piston rod head air channel I and a piston rod head air channel II which are mutually communicated are processed on the piston head, the piston rod head air channel I is communicated with the sealed inner cavity of the corrugated pipe, the piston rod head air channel II is communicated with the external environment, and the piston rod head air channel I and the piston rod head air channel II jointly form the ventilation channel. In some embodiments, the dustproof filtering component comprises a filter and a rubber air inlet pipe, the filter is arranged at the joint of the second air passage of the piston rod head and the external environment in a sealing mode, the rubber air inlet pipe is sleeved outside the filter, and the rubber air inlet pipe can prolong an air inlet path of air entering the second air passage of the piston rod head. In some embodiments, a metal filter screen is embedded in the filter, a locking ring is assembled on the filter, and the locking ring is pressed into the inner cavity of the filter in an interference fit manner and is abutted against the metal filter screen, so that the metal filter screen is fixed to prevent the metal filter screen from loosening and fa