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CN-122009265-A - Urban rail vehicle bogie axle box end cover

CN122009265ACN 122009265 ACN122009265 ACN 122009265ACN-122009265-A

Abstract

The invention discloses an axle box end cover of a bogie of an urban rail vehicle, which relates to the technical field of rail transit and comprises an axle box and an end cover, wherein a sealing assembly is arranged on the end cover, and the sealing assembly in the device presses and locks a plurality of transverse plates which are uniformly distributed in a ring shape on the end cover when encountering a low-temperature environment, and drives an arc-shaped pressurizing plate to radially compress and compensate a contracted sealing ring, so that the radial pressure can be regulated outside the sealing ring, the sealing ring can restore the contact pressure with a contact surface, when the environmental temperature rises, the locking of the transverse plates can be relieved, the sealing ring can restore a free state, the reversible regulation along with the environmental change is realized, and the problem that in the prior art, parts inside the axle box are polluted by impurities in the air due to the replacement of a low-temperature special sealing ring by opening the end cover is solved.

Inventors

  • LI SHIJIN
  • LI MINGBO
  • MU JIANPING
  • ZHAO JINGUO
  • YU TAO
  • HAN QIANG
  • MU BAOCHENG
  • HAO JIANKUN

Assignees

  • 青岛三峻铸造有限公司

Dates

Publication Date
20260512
Application Date
20260415

Claims (9)

  1. 1. The end cover of the axle box of the urban rail vehicle bogie comprises an axle box (1) and an end cover (3) with an annular structure, and is characterized in that a butt joint hole (21) is formed in the axle box (1), an axle wheel pair (22) is fixedly connected to the inner ring of the butt joint hole (21), and the end cover (3) is detachably connected with the axle box (1); The novel sealing structure is characterized in that a sealing assembly is arranged on the end cover (3), the sealing assembly comprises a fixing plate (41), a sealing ring (42) and a butt joint ring (43), the fixing plate (41) is fixedly connected with the end cover (3), the sealing ring (42) and the butt joint ring (43) are fixedly connected with the end part of the fixing plate (41), four rectangular cavities (44) are annularly and equidistantly arranged in the end cover (3), a transverse plate (45) and a vertical plate (46) are slidably connected in each rectangular cavity (44), a spring telescopic rod (47) is fixedly connected in each rectangular cavity (44), a connecting plate (48) is rotatably connected to the outer wall of each transverse plate (45), each connecting plate (48) is rotatably connected with a similar vertical plate (46), and an arc-shaped pressurizing plate (49) is fixedly connected to the end part of each vertical plate (46). The sealing assembly comprises an operation ring (410), four square grooves (411) are formed in the operation ring (410) in an annular equidistant mode, and two thread seats (412) are symmetrically and fixedly connected to the fixing plate (41).
  2. 2. The urban rail vehicle bogie axle box end cover according to claim 1, wherein the outer wall of each transverse plate (45) is fixedly connected with a first convex plate (4501), the outer wall of each vertical plate (46) is fixedly connected with a second convex plate (4601), and each spring telescopic rod (47) is fixedly connected with a similar transverse plate (45).
  3. 3. An urban rail vehicle bogie axle box end cover according to claim 1, characterized in that the sealing ring (42) is fixedly connected with the docking ring (43), and each arc-shaped pressing plate (49) is adapted to the outer ring surface of the sealing ring (42).
  4. 4. The urban rail vehicle bogie axle box end cover according to claim 1, characterized in that said operating ring (410) is removably connected to two threaded seats (412), each of said square slots (411) being adapted and corresponding to a transverse plate (45).
  5. 5. The urban rail vehicle bogie axle box end cover according to claim 1, wherein the fixing plate (41) is provided with a supporting component, the supporting component comprises a T-shaped rod (51) and a moving block (53), the T-shaped rod (51) is composed of a cross round rod and a disc seat, the cross round rod in the T-shaped rod (51) is slidably connected with the fixing plate (41), the end part of the T-shaped rod (51) is rotatably connected with a first joint (52), the moving block (53) is provided with a jack (54), a disc spring (55) is fixedly connected between the disc seat in the T-shaped rod (51) and the fixing plate (41), and the end part of the axle wheel pair (22) is rotatably connected with a second joint (56).
  6. 6. The urban rail vehicle bogie axle box end cover according to claim 5, wherein the end portion of the T-shaped rod (51) is provided with a magnet, the outer wall of the moving block (53) is provided with an iron block, the joint two (56) and the joint one (52) are provided with bevel teeth, and the joint two (56) is matched with the joint one (52).
  7. 7. The urban rail vehicle bogie axle box end cover according to claim 1, characterized in that a prompt component is arranged on the fixed plate (41), the prompt component comprises an L-shaped block (61), the L-shaped block (61) is fixedly connected with the fixed plate (41), a vertical groove (62) and a moving groove (63) are formed in the L-shaped block (61), a protective cover (64) is clamped at the top of the L-shaped block (61), a beveling block (65) is connected in the vertical groove (62) in a sliding manner, the bottom of the beveling block (65) is matched with the jack (54), a limiting plate (66) is fixedly connected to the outer wall of the beveling block (65), a pulling plate (67) is fixedly connected to the top of the beveling block (65), and two small springs (68) are symmetrically and fixedly connected to the limiting plate (66).
  8. 8. The urban rail vehicle bogie axle box end cover according to claim 7, wherein the vertical groove (62) is communicated with the moving groove (63), the upper portion of the vertical groove (62) is slidably matched with the pull plate (67), the middle portion of the vertical groove (62) is slidably matched with the limit plate (66), the lower portion of the vertical groove (62) is slidably matched with the beveling block (65), and the two small springs (68) are fixedly connected with the vertical groove (62).
  9. 9. The urban rail vehicle bogie axle box end cover according to claim 7, wherein the moving block (53) is slidably connected with the moving groove (63), and the outer wall of the L-shaped block (61) is provided with a transparent viewing window.

Description

Urban rail vehicle bogie axle box end cover Technical Field The invention relates to the technical field of rail transit, in particular to an end cover of a bogie axle box of an urban rail vehicle. Background The end cover of the axle box of the urban rail vehicle bogie is a sealing and protecting part arranged at the end part of the axle box body, and has the functions of sealing the inner space of the axle box, protecting the parts such as bearings in the axle box from being invaded by pollutants such as external dust, rainwater and the like, and simultaneously preventing the leakage of internal lubricating grease, and the end cover is tightly matched with the axle box through the fastening of bolts to ensure that the bearings run in a stable environment; In the prior art, the static seal is realized by arranging the sealing ring on the end cover, however, the performance of the sealing ring is obviously influenced by the environmental temperature, the rubber can shrink in severe cold low-temperature environment, the interference between the rubber and the matching surface is reduced, and the sealing is invalid, when the sealing ring is subjected to low-temperature weather, the traditional mode is to open the end cover of the axle box, disassemble the original standard sealing ring and replace the original standard sealing ring into a low-temperature special rubber ring, the operation steps of the mode are complicated, the disassembly of the end cover, the removal of the old ring, the cleaning of the contact surface, the installation of a new ring and the resetting and fastening of the end cover are involved, and dust, water vapor and other impurities in the external environment can enter the interior of the axle box to pollute the bearing and lubricating grease thereof, so that the service life and the operation reliability of the axial internal parts are reduced; In addition, in the prior art, an inclined round spring is usually arranged between an axle box and a bogie, the core function of the round spring is to bear vertical load, the upper end and the lower end of the round spring are relatively fixed when the round spring bears the vertical load, when a vehicle passes through a curve, the wheel set transversely moves to force the spring to incline and deform, and the transverse constraint of the wheel set of the vehicle axle is realized through elastic component force generated by the inclined deformation, but because the mode is not provided with a transverse supporting part alone, enough elastic constraint cannot be provided in the curve running process of the vehicle, the capability of inhibiting the meandering is weaker, and the running stability of the urban rail vehicle in running is reduced; In addition, urban rail vehicles can return to the warehouse every day to carry out quick inspection, staff only inspects through visual and hand touch during quick inspection, the end cover can not be opened to inspect the interior of the axle box, if the bearing in the axle box is damaged, the axle wheel pair is caused to transversely deviate beyond the preset range, only the sudden faults generated in the inspection interval period can not be found (namely, the end cover is periodically opened to inspect the bearing in the axle box and other parts), namely, the damage of the parts in the axle box can not be timely found, the vehicle can continue running with hidden danger, and even derailment occurs. In order to solve the problems, the inventor provides an end cover of a bogie axle box of an urban rail vehicle. Disclosure of Invention In order to solve the technical problems, the technical scheme provides an end cover of a bogie axle box of an urban rail vehicle, which solves the problems in the background art; in order to achieve the above purpose, the present invention can be realized by adopting the following technical scheme: The invention provides an axle box end cover of an urban rail vehicle bogie, which comprises an axle box and an end cover with an annular structure, wherein a butt joint hole is formed in the axle box, an axle wheel set is fixedly connected with an inner ring of the butt joint hole, and the end cover is detachably connected with the axle box; The end cover is provided with a sealing assembly, the sealing assembly comprises a fixed plate, a sealing ring and a butt joint ring, the fixed plate is fixedly connected with the end cover, the sealing ring and the butt joint ring are fixedly connected with the end part of the fixed plate, four rectangular cavities are annularly and equidistantly formed in the end cover, each rectangular cavity is slidably connected with a transverse plate and a vertical plate, each rectangular cavity is fixedly connected with a spring telescopic rod, the outer wall of each transverse plate is rotatably connected with a connecting plate, each connecting plate is rotatably connected with a similar vertical plate, and each vertical plate end part is fixed