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CN-224217873-U - Flow guiding type electric brush wear-resistant structure

CN224217873UCN 224217873 UCN224217873 UCN 224217873UCN-224217873-U

Abstract

The application relates to a diversion type electric brush wear-resistant structure, which belongs to the field of contact pieces which are cooperated with commutators or slip rings, and comprises a shell, electric brushes and slip rings, wherein one ends of the electric brushes are abutted against contact surfaces of the slip rings, the electric brushes and the slip rings are arranged in the shell, air guide plates which extend out along the radial direction are arranged at corresponding positions of the slip rings on two sides of the electric brushes, the air guide plates and the contact surfaces jointly enclose into a conductive chute for accommodating the electric brushes, the electric brushes are inserted into the conductive chute, a plurality of diversion ports for leading air flow into the conductive chute are uniformly distributed on the air guide plates in an annular shape, an obliquely extending air guide plate is arranged above the diversion ports on the inner side surface of the air guide plate, and the extending direction of the air guide plate is in the same direction as a tangent line along the rotating direction of the slip rings. The brush can catch graphite particles in the air in the running process, so that the self-lubricating property of the brush is endowed, and the abrasion resistance of the brush is improved.

Inventors

  • HE KUN

Assignees

  • 任丘市双楼电碳制品有限公司

Dates

Publication Date
20260508
Application Date
20250522

Claims (7)

  1. 1. The utility model provides a water conservancy diversion formula brush wear-resisting structure, includes brush (1) and sliding ring (8), and the contact surface of brush (1) one end butt sliding ring (8), its characterized in that: The two sides of the electric brush (1) are provided with air guide discs (3) which extend out along the radial direction at corresponding positions of the slip rings (8), the air guide discs (3) and the contact surfaces are jointly enclosed to form a conductive chute (4) for accommodating the electric brush (1), and the electric brush (1) is inserted to be accommodated in the conductive chute (4); Wherein, be a plurality of drainage mouths that are used for introducing the air current in electrically conductive spout (4) offered of annular equipartition on wind-guiding dish (3), be located the medial surface of wind-guiding dish (3) and be equipped with a plurality of aviation baffles (34), one side along radial direction of drainage mouth of every aviation baffle (34) one-to-one, aviation baffle (34) from the corresponding side of aviation baffle (34) be close to gradually the contact surface and become the slope and extend, the extending direction of aviation baffle (34) with the rotatory in-process velocity vector's of wind-guiding dish (3) direction syntropy.
  2. 2. The flow-guiding type electric brush wear-resistant structure according to claim 1, wherein the bottom of the air guiding disc (3) is an arc-shaped part (32) gradually approaching the electric brush (1) and extending in an arc shape, an arc-shaped included angle part (321) for accommodating more air flow is arranged between the arc-shaped part (32) and the slip ring (8), and an inclined plate part (33) gradually approaching the electric brush (1) is obliquely extending above the arc-shaped part (32).
  3. 3. The flow-guiding type electric brush wear-resistant structure according to claim 1, wherein convex parts (31) which are in one-to-one correspondence with the flow guiding openings are formed on the outer side of the air guiding disc (3), each convex part (31) is parallel to the extending direction of the corresponding air guiding plate (34), and a flow guiding air passage (311) which is communicated with the flow guiding opening is formed on one side of the convex part (31) close to the sliding ring (8).
  4. 4. The diversion type electric brush wear-resistant structure according to claim 1, wherein the slip ring (8) is provided with an annular groove (41) which surrounds along the axial direction, the bottom of the air guide disc (3) is positioned on a stepped platform which is arranged outside the annular groove (41), the lowest point of the air guide plate (34) is higher than the annular groove (41), and the edge of the stepped platform is of a chamfer structure.
  5. 5. The flow-guiding type electric brush wear-resistant structure according to claim 1, further comprising a support body, wherein the support body is located above the sliding ring (8), and the electric brush (1) is fixed at the extending end of the support body and is directed to the center of the sliding ring (8) to be abutted against the contact surface of the sliding ring (8).
  6. 6. The flow-guiding type electric brush wear-resistant structure according to claim 5, wherein the number of the support bodies is two, the two support bodies are arranged on the outer side of the slip ring (8) in a radial symmetry mode, the support bodies comprise electric brush supports (6), outwardly extending bifurcation rods are formed at the bottoms of the electric brush supports (6), and the electric brushes (1) are fixed at free ends of the bifurcation rods.
  7. 7. The flow-guiding type electric brush wear-resistant structure of claim 6, wherein the support body further comprises a compression spring (2), a notch for accommodating the compression spring (2) is formed in the top of the electric brush support (6), and the compression spring (2) is horizontally compressed in the notch.

Description

Flow guiding type electric brush wear-resistant structure Technical Field The utility model relates to the field of contact elements which cooperate with a commutator or a slip ring, and thus provides a diversion type electric brush wear-resistant structure. Background The electric brush is used as an important component of a motor, can realize the 'bridge' for conducting current between a static part and a rotating part, can realize the mutual conversion of electric energy and mechanical energy, is powered by the electric brush or is powered outwards by the electric brush, and is in continuous contact with the rotating part due to the static and continuous contact of the electric brush in the use process due to the use scene of the electric brush, so that the electric brush can be continuously worn, the wear rate of the electric brush can directly influence the working state of the motor, and particularly, the graphite electric brush is used as the first choice of a heavy current load, the use environment rotating speed is high, the current load is high, and the difficulty of improving the wear resistance of the electric brush under the condition is realized. Chinese patent publication No. CN 221467003U discloses a wear-resistant brush for plating wire, which includes a brush and a brush cover, wherein one side of the brush cover is connected with an inner frame and an outer frame, and a heat sink is installed in the outer frame. The heat abstractor comprises water-cooling machine, circulating pump and snakelike water pipe, and water-cooling machine and outer frame connection, circulating pump link to each other with the water-cooling machine through the snakelike water pipe, and snakelike water pipe outer wall cover has the water pipe cover and is fixed with the inner frame through the fixture block, through having add the water-cooling machine, reinforcing equipment's heat dispersion, water-cooling is carried out to whole equipment, has improved the radiating effect of equipment to promote the wearability. So carry out radiating scheme through addding water cooling plant to the motor, owing to there is the continuous lets in of electric current in the course of the work of motor, this kind of scheme has the risk of long-term use coolant liquid weeping, has the potential safety hazard to through the operating temperature who changes the brush wear-resisting from the brush that makes, so do not outstanding to the wearability effect of brush, can't be to the effective heat dissipation of the working position of brush. Chinese patent publication No. CN 217009837U discloses a sheet brush with good wear resistance, which comprises a housing, the right side of the housing is connected with a fixing mechanism, the bottom in the housing is provided with a spring, the top end of the spring is connected with a wear-resistant mechanism, the bottom of the wear-resistant mechanism penetrates through the bottom of the housing through a connecting wire, and the top of the wear-resistant mechanism is connected with a brush head. The fixed establishment includes the metal base, and metal base connects spring top and brush head bottom, and the brush head surface is equipped with the arc wall, and the fixed fixture block in arc wall left side, the slide bar slides in the arc wall, and the slide bar left side is equipped with the recess, in the fixture block embedding recess, slide bar and the inboard sliding connection of casing, and the slide bar replaces brush head and shells inner wall to rub, has avoided brush head directly to rub with the shells inboard and has caused brush head surface to take place wearing and tearing. The proposal for enhancing the wear resistance utilizes the sliding rod to protect the part of the brush head positioned in the shell, and the sliding rod is contacted with the shell when the shell is displaced, thereby avoiding the direct contact between the brush head and the shell and enhancing the wear resistance of the sliding rod. From the above, in the prior art, the abrasion resistance of the brush head part of the brush cannot be directly improved by adopting the scheme for improving the abrasion resistance of the brush, the abrasion resistance improvement of the brush is not obvious, the external environment of the brush can be acted only, the abrasion resistance of the brush head part of the brush cannot be directly improved in a high-speed rotation state, the problem of abrasion resistance cannot be fundamentally solved, and the limitation is caused. In addition, the existing market competition is vigorous, the unit price of the assembly is increased by introducing additional water cooling equipment, and the abrasion resistance of the electric brush cannot be effectively improved by the additional water cooling equipment, so that the existing scheme is difficult to meet the double requirements of cost and durability, and the reliable high abrasion-resistant electric brush cannot be provided