CN212210681U - Coil spring type brush holder for winding rotor motor for hoisting and metallurgy - Google Patents
Coil spring type brush holder for winding rotor motor for hoisting and metallurgy Download PDFInfo
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- CN212210681U CN212210681U CN202020945204.3U CN202020945204U CN212210681U CN 212210681 U CN212210681 U CN 212210681U CN 202020945204 U CN202020945204 U CN 202020945204U CN 212210681 U CN212210681 U CN 212210681U
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Abstract
The utility model discloses a jack-up and metallurgical coil spring formula brush holder for wire winding rotor motor, brush yoke middle part bilateral symmetry is provided with the terminal, the clamp plate cup joints on the terminal and fixed through first retaining member locking, the brush-holder stud is installed between clamp plate and brush yoke, the conducting strip has been cup jointed on the terminal of clamp plate upper end, the tape tail brush cup joints on the terminal of conducting strip upper end through the lead wire and fixed through second retaining member locking, wherein the independent lead wire has still been cup jointed on the terminal of one side lead wire upper end, independent pin connection is on the rotor terminal box, tape tail brush slidable mounting is in the brush box of brush yoke, demountable installation has the constant force spring clamp in the brush box, tape tail brush and collecting ring cooperation contact, and maintain constant pressure through the constant force spring clamp. The utility model discloses a constant force spring clamp applys constant pressure to the brush through the volute spiral spring, has effectively solved jack-up and metallurgical and has caused the ablation problem because pressure is inhomogeneous about the brush with wound rotor three-phase asynchronous motor.
Description
Technical Field
The utility model relates to a brush holder device, concretely relates to jack-up and metallurgical coil spring formula brush holder for wire winding rotor motor.
Background
The wound rotor motor for hoisting and metallurgy in the industries of mines, metallurgy, cement plants and the like has wide application, and along with the continuous increase of market demands, the derivative series products matched with the wound rotor motor are continuously updated. The brush holder device is an important part in the series of motors, but often has a problem of failure, in particular to a situation that the pressure of a brush is not proper or the contact of a working surface is poor often occurs in a pressure type brush holder device, for example, when the pressure is too high, the friction force between the brush and a collecting ring is increased, the mechanical abrasion is intensified, excessive heat is generated and is not easy to dissipate, and then the collecting ring is damaged and ablated, and when the pressure is too low, the contact of the brush and the collecting ring is poor, the electrical loss is increased, sparks are easy to generate, and the collecting ring is also ablated. If the contact surface of the electric brush and the collecting ring is a non-fit arc contact surface, the contact surface is too small, sparks can be generated due to too high current density, oil stains and carbon powder are frequently generated on the working surface of the collecting ring, the heat dissipation condition is poor, and the temperature of the collecting ring is too high, so that pockmarks and even ablation are caused. Therefore, the matching problem of the brush holder device and the collector ring of the YZR3 series hoisting and metallurgical wound rotor three-phase asynchronous motor is needed to be solved.
Disclosure of Invention
The utility model aims to solve the technical problem that to above-mentioned prior art not enough, provide a jack-up and for metallurgy winding rotor motor coil spring formula brush holder, this coil spring formula brush holder adopts the constant force spring clamp, and the constancy pressure is applyed to the brush through the contractile force after the volute spiral spring opens, can effectively solve YZR3 series jack-up and for metallurgy winding rotor three-phase asynchronous motor because the brush about the pressure inhomogeneous and cause the ablation problem.
In order to realize the technical purpose, the utility model discloses the technical scheme who takes does: the utility model provides a jack-up and metallurgical coil spring formula brush holder for wound rotor motor, including the brush yoke, the middle part bilateral symmetry of brush yoke is provided with the terminal, the clamp plate cup joints on the terminal and locks fixedly through first retaining member, the brush-holder stud of motor is installed between clamp plate and brush yoke, the conducting strip has been cup jointed on the terminal of clamp plate upper end, the tape trailer brush cup joints on the terminal of conducting strip upper end through the lead wire and locks fixedly through second retaining member, wherein still cup jointed independent lead wire on the terminal of one side lead wire upper end, independent pin connection is on the rotor terminal box of motor, tape trailer brush slidable mounting is in the brush box of brush yoke, demountable installation has the constant force spring clamp in the brush box, tape trailer brush and the collecting ring cooperation contact of motor, and maintain constant pressure through the constant force spring clamp.
Further, the brush yoke is made of aluminum alloy.
Further, the terminal is the screw thread post, first retaining member and second retaining member are the nut with this screw thread post cooperation locking.
Furthermore, the independent lead is sleeved on the lead upper end binding post on the right side and locked through the second locking piece in a threaded mode.
Furthermore, washers are arranged between the first locking piece and the pressure plate and between the second locking piece and the independent lead.
Further, the middle part of the pressing plate is an arc-shaped part with a downward opening, an arc-shaped groove is formed in the middle part of the brush holder opposite to the arc-shaped part, and the brush rod is sleeved in a channel formed by the arc-shaped part of the pressing plate and the arc-shaped groove.
Further, the pressing plate and the conducting plate are made of Q235 steel.
Furthermore, the constant-force spring clamp comprises an inverted V-shaped steel sheet and a scroll spring, the scroll spring is fixed to the lower portion of the left inner wall of the inverted V-shaped steel sheet, a clamping block is arranged on the left outer wall of the inverted V-shaped steel sheet, and the upper end of the clamping block inclines outwards and is distributed at an acute angle with the left outer wall.
Furthermore, the scroll spring is formed by rolling a thin spring piece into a concentric circle, the number of turns of the thin spring piece is determined according to the required spring pressure, the scroll spring is fixed on the lower part of the left inner wall of the inverted V-shaped steel piece through the initial part of the outermost layer of the scroll spring, and the scroll spring is in contact connection with the top of the carbon brush with the tail electric brush and correspondingly stretches and retracts along with the up-and-down movement of the carbon brush.
Furthermore, a square hole is formed in the side wall of the brush box, a clamping piece is installed on the side wall of the brush box corresponding to the square hole, a clamping hole is formed in the middle of the clamping piece, and the inverted V-shaped steel sheet is fixed in the brush box through the clamping block and the clamping fit of the clamping hole.
The utility model discloses following beneficial effect has: the utility model adopts a constant force spring clamp, an inverted V-shaped section steel sheet of the constant force spring clamp is fixed in a brush box, a volute spiral spring fixed on the inner wall of the inverted V-shaped section steel sheet is connected with the upper end face of a carbon brush with a tail brush in a fitting way, the positive pressure vertical acting force is applied between the carbon brush and the carbon brush, the carbon brush is contacted with a collecting ring of the motor, the volute spiral spring applies pressure to the carbon brush by using the contraction force after the spring is expanded, and the volute spiral spring performs corresponding telescopic motion along with the up-and-down motion of the carbon brush, has the characteristic of constant pressure, further, the contact pressure of the carbon brush and the collecting ring is constant and firm, the abrasion and the heating of the collecting ring and the brush with the tail in the whole service life are effectively reduced, the problem of ablation of a YZR3 series hoisting and metallurgical wound rotor three-phase asynchronous motor caused by uneven pressure of the brush is solved, and the scroll spring pressure is fully acted on the carbon brush, the material cost of the brush box is reduced, and the failure rate of the YZR3 series hoisting and metallurgical wound rotor motor can be greatly reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the constant force spring clip of FIG. 1;
FIG. 3 is a schematic view of FIG. 2 taken in the direction of K;
fig. 4 is a schematic view of the assembly of the coil spring type brush holder and YZR3 series hoisting and metallurgical wound rotor motor of the present invention.
Wherein the reference numerals are: the brush holder 1, the brush box 1-1, the card 1-2, the binding post 2, the pressing plate 3, the first locking piece 4, the brush rod 5, the conducting strip 6, the tail-equipped brush 7, the lead 7-1, the carbon brush 7-2, the second locking piece 8, the independent lead 9, the rotor junction box 10, the constant force spring clamp 11, the reverse V-shaped steel sheet 11-1, the volute spring 11-2, the card 11-3, the collecting ring 12, the gasket 13, the bearing sleeve 14, the shaft 15, the bearing front cover 16, the bearing rear cover 17, the end cover 18, the balance block 19, the rotor 20, the rotor dust baffle 21, the stator 22, the junction box 23, the stator dust baffle 24, the high end cover 25, the observation window 26 and the coil spring type brush holder 27.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
As shown in figure 1, the coil spring type brush holder for the winding rotor motor for hoisting and metallurgy of the utility model comprises a brush holder 1, the brush holder 1 is made of aluminum alloy, terminals 2 are symmetrically arranged at the left and right of the middle part of the brush holder 1, a pressing plate 3 is sleeved on two terminals 2 of the same phase and is locked and fixed through a first locking piece 4, the middle part of the pressing plate 3 is an arc part with a downward opening, the middle part of the brush holder 1 opposite to the arc part is provided with an arc groove, a brush rod 5 of the motor is sleeved in a channel formed by the arc part of the pressing plate 3 and the arc groove, conducting strips 6 are sleeved on two terminals 2 of the same phase at the upper end of the pressing plate 3, a left side tail brush 7 of the same phase is sleeved on the terminal 2 at the upper end of the conducting strip 6 through a lead 7-1 and is locked and fixed through a second locking piece 8, an independent lead 9 is sleeved on the terminal 2 at the upper end of the, washers 13 are further mounted between the first locking piece 4 and the pressing plate 3 and between the second locking piece 8 and the independent lead 9 to further prevent loosening, the independent lead 9 is connected to a rotor junction box 10 of the motor, the tail electric brush 7 is slidably mounted in a brush box 1-1 of the brush holder 1, a constant-force spring clamp 11 is detachably mounted in the brush box 1-1, and the tail electric brush 7 is in matched contact with a collecting ring 12 of the motor and maintains constant pressure through the constant-force spring clamp 11.
In the embodiment, the terminal post 2 is a threaded post, and the first locking member 4 and the second locking member 8 are nuts which are matched with the threaded post for locking.
Preferably, platen 3 and conductive plate 6 are both of Q235 steel.
As shown in figures 2 and 3, the constant force spring clamp 11 comprises an inverted V-shaped steel sheet 11-1 and a scroll spring 11-2, the scroll spring 11-2 is formed by rolling a thin spring sheet into a concentric circle, the number of turns of the thin spring sheet is determined according to the required spring pressure, the scroll spring 11-2 is fixed at the lower part of the left inner wall of the inverted V-shaped steel sheet 11-1 through the initial part of the outermost layer of the scroll spring 11-2, a clamping block 11-3 is arranged on the left outer wall of the inverted V-shaped steel sheet 11-1, the upper end of the clamping block 11-3 inclines outwards and is distributed at an acute angle with the left outer wall, as shown in figure 1, a square hole is arranged on the side wall of the brush box 1-1 corresponding to the square hole, a clamping block 1-2 is arranged at the middle part of the clamping block 1-2, the inverted V-shaped steel sheet 11-1 is fixed in the brush box 1-1 through, the scroll spring 11-2 is in contact connection with the top of the carbon brush 7-2 with the tail brush 7, and makes corresponding telescopic movement along with the up-and-down movement of the carbon brush 7-2, and has constant pressure characteristic.
As shown in FIG. 4, the three-phase asynchronous motor with the coil spring type brush holder for hoisting and metallurgy use is provided, a bearing housing 14 is arranged at the bearing position of a shaft 15, a bearing front cover 16 and a bearing rear cover 17 are respectively fixed at the inner side and the outer side of an end cover 18, a balance weight 19 is arranged at the shaft extension end of a rotor 20, a rotor dust guard 21 is arranged at the shaft tail end of the rotor 20, a stator 22 is aligned with the iron core position of the rotor 20, a terminal box 23 is arranged above the motor and is a stator terminal box, a stator dust guard 24 is arranged in alignment with the position of the rotor dust guard 21, a high end cover 25 is arranged at the shaft tail end, an observation window 26 is detachably connected with the high end cover 25 through bolts, a brush rod 5 connects a three-phase coil spring type brush holder 27 (the whole coil spring type brush holder shown as 27 in FIG. 4) at the side of the high end cover 25, a carbon brush 7-2 of the coil spring type brush holder 27 is in matching contact with a carbon brush ring 12, the brush holder 27 is inspected through an observation window 26, the coil spring type brush holder 27 is provided with an independent rotor junction box 10 and is arranged above a high-end cover 25, and the tail end of a shaft 15 is connected with a fan 28 and a fan cover 29.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.
Claims (10)
1. A coil spring type brush holder for a winding rotor motor for hoisting and metallurgy comprises a brush holder (1) and is characterized in that binding posts (2) are symmetrically arranged at the left and right of the middle of the brush holder (1), a pressing plate (3) is sleeved on the binding posts (2) and is locked and fixed through a first locking piece (4), a brush rod (5) of the motor is installed between the pressing plate (3) and the brush holder (1), a conducting strip (6) is sleeved on the binding posts (2) at the upper end of the pressing plate (3), a tail electric brush (7) is sleeved on the binding posts (2) at the upper end of the conducting strip (6) through leads (7-1) and is locked and fixed through a second locking piece (8), an independent lead (9) is further sleeved on the binding posts (2) at the upper end of the lead (7-1) at one side, the independent lead (9) is connected on a rotor junction box (10) of, the tail electric brush (7) is slidably mounted in a brush box (1-1) of a brush frame (1), a constant force spring clamp (11) is detachably mounted in the brush box (1-1), the tail electric brush (7) is in matched contact with a collecting ring (12) of the motor, and constant pressure is maintained through the constant force spring clamp (11).
2. The wrap spring brush holder according to claim 1, wherein: the brush holder (1) is made of aluminum alloy.
3. The wrap spring brush holder according to claim 2, wherein: the terminal (2) is a threaded column, and the first locking piece (4) and the second locking piece (8) are nuts locked by matching with the threaded column.
4. A wrap spring brush holder according to claim 3, wherein: the independent lead (9) is sleeved on the wiring terminal (2) at the upper end of the lead (7-1) on the right side and is locked through a second locking piece (8) in a threaded mode.
5. The wrap spring brush holder according to claim 4, wherein: washers (13) are further mounted between the first locking piece (4) and the pressure plate (3) and between the second locking piece (8) and the independent lead (9).
6. The wrap spring brush holder according to claim 5, wherein: the middle part of the pressing plate (3) is an arc-shaped part with a downward opening, the middle part of the brush holder (1) opposite to the arc-shaped part is provided with an arc-shaped groove, and the brush rod (5) is sleeved in a channel formed by the arc-shaped part of the pressing plate (3) and the arc-shaped groove.
7. The wrap spring brush holder according to claim 6, wherein: and the pressing plate (3) and the conducting plate (6) are both made of Q235 steel.
8. The wrap spring brush holder according to claim 7, wherein: the constant-force spring clamp (11) comprises an inverted V-shaped steel sheet (11-1) and a volute spiral spring (11-2), the volute spiral spring (11-2) is fixed to the lower portion of the left inner wall of the inverted V-shaped steel sheet (11-1), a clamping block (11-3) is arranged on the left outer wall of the inverted V-shaped steel sheet (11-1), and the upper end of the clamping block (11-3) inclines outwards and is distributed at an acute angle with the left outer wall.
9. The wrap spring brush holder according to claim 8, wherein: the spiral spring (11-2) is formed by rolling a thin spring piece into a concentric circle shape, the number of turns of the thin spring piece is determined according to the required spring pressure, the spiral spring (11-2) is fixed on the lower portion of the left inner wall of the inverted V-shaped steel piece (11-1) through the initial portion of the outermost layer of the spiral spring, and the spiral spring (11-2) is in contact connection with the top of a carbon brush (7-2) of the tail electric brush (7) and correspondingly stretches and retracts along with the up-and-down movement of the carbon brush (7-2).
10. The wrap spring brush holder according to claim 9, wherein: the side wall of the brush box (1-1) is provided with a square hole, the side wall of the brush box (1-1) corresponding to the square hole is provided with a clamping piece (1-2), the middle part of the clamping piece (1-2) is provided with a clamping hole, the clamping piece (11-3) is matched with the clamping hole in a buckling mode, and the inverted V-shaped steel sheet (11-1) is fixed in the brush box (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020945204.3U CN212210681U (en) | 2020-05-29 | 2020-05-29 | Coil spring type brush holder for winding rotor motor for hoisting and metallurgy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020945204.3U CN212210681U (en) | 2020-05-29 | 2020-05-29 | Coil spring type brush holder for winding rotor motor for hoisting and metallurgy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212210681U true CN212210681U (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020945204.3U Active CN212210681U (en) | 2020-05-29 | 2020-05-29 | Coil spring type brush holder for winding rotor motor for hoisting and metallurgy |
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| CN (1) | CN212210681U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112928569A (en) * | 2021-01-29 | 2021-06-08 | 上海电气风电集团股份有限公司 | Carbon brush device |
| CN115764474A (en) * | 2022-12-14 | 2023-03-07 | 沧州宇航电机电气有限公司 | Brush holder with punching and riveting structure |
-
2020
- 2020-05-29 CN CN202020945204.3U patent/CN212210681U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112928569A (en) * | 2021-01-29 | 2021-06-08 | 上海电气风电集团股份有限公司 | Carbon brush device |
| CN115764474A (en) * | 2022-12-14 | 2023-03-07 | 沧州宇航电机电气有限公司 | Brush holder with punching and riveting structure |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220121 Address after: 241000 No. 8, Vientiane Road, Jiujiang District, Wuhu City, Anhui Province Patentee after: Anhui gold foil Electromechanical Industry Group Co.,Ltd. Address before: No.98, Dongshan Town Street East Road, Jiangning District, Nanjing City, Jiangsu Province Patentee before: NANJING HOISTING MOTOR GENERAL FACTORY |