CN211908614U - Internal-brake type double-brake conical rotor three-phase asynchronous motor - Google Patents
Internal-brake type double-brake conical rotor three-phase asynchronous motor Download PDFInfo
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- CN211908614U CN211908614U CN202020931043.2U CN202020931043U CN211908614U CN 211908614 U CN211908614 U CN 211908614U CN 202020931043 U CN202020931043 U CN 202020931043U CN 211908614 U CN211908614 U CN 211908614U
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- conical
- phase asynchronous
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Abstract
The utility model discloses an interior formula double-brake toper rotor three-phase asynchronous motor of stopping, including toper rotor three-phase asynchronous motor, interior formula stopper and the electromagnetic braking ware of stopping, toper rotor three-phase asynchronous motor includes front end housing, toper rotor, has winding toper stator, rear end housing and rear end cover, and interior formula stopper of stopping includes pressure spring and fan braked wheel, and pressure spring and fan braked wheel are fixed on toper rotor, and electromagnetic braking ware passes through the rear end cover and fixes on the rear end cover. The utility model discloses a double-brake system that interior formula stopper of stopping and electromagnetic braking ware are constituteed can avoid the accident hidden danger that single brake failure caused, and double-brake system provides double static braking torque moreover, can effectively shorten braking time, reduces the wearing and tearing of brake face, safe and reliable.
Description
Technical Field
The utility model relates to a jack-up is motor for electric block, concretely relates to two braking toper rotor three-phase asynchronous motor of interior formula of stopping.
Background
At present, the conical rotor three-phase asynchronous motor for the electric hoist in the hoisting industry in China usually adopts single braking, the braking safety coefficient of a static brake is generally designed to be 1.5-2.0, the electric hoist usually can be operated by inching frequently, the abrasion of a braking surface is accelerated in the frequent starting and braking process, the braking torque performance of the brake is reduced, and if the braking torque is insufficient and the braking torque is not maintained in time, the hoisting objects are easy to drop, so that major accidents are caused. Along with the development of the hoisting industry, people also need to be higher and higher for the braking safety coefficient of a motor, and the requirement for the maintenance period of a brake is longer and longer. Due to the friction coefficient of the brake surface material of the brake and the compact structure of the conical motor, it is more and more difficult to increase the friction coefficient and the positive pressure of the brake surface of the original brake, i.e. to replace the brake material and increase the brake spring force or the angle and the contact area of the brake surface.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to above-mentioned prior art not enough, provide an interior formula double-brake toper rotor three-phase asynchronous motor that stops, this motor can avoid the accident hidden danger that single brake failure caused through the double-brake system that interior formula stopper and electromagnetic braking ware constitute of stopping, can effectively shorten braking time moreover, reduces the wearing and tearing of brake face.
In order to realize the technical purpose, the utility model discloses the technical scheme who takes does: the utility model provides an interior formula of stopping two braking toper rotor three-phase asynchronous motor, includes toper rotor three-phase asynchronous motor, interior formula stopper and the electromagnetic braking ware of stopping, toper rotor three-phase asynchronous motor includes front end housing, toper rotor, has winding toper stator, rear end housing and rear end cover, and interior formula stopper of stopping includes pressure spring and fan braked wheel, and pressure spring and fan braked wheel are fixed on toper rotor, and the electromagnetic braking ware passes through the rear end cover and fixes on the rear end cover.
Furthermore, the conical rotor and the conical stator with the winding are both conical, the conical rotor is arranged in the conical stator with the winding, when the motor is powered on, the conical rotor axially moves towards the tail end of the shaft under the action of electromagnetic force, the fan brake wheel is separated from the braking surface of the rear end cover, when the motor is powered off, the conical rotor moves towards the power end of the shaft extension, the fan brake wheel is attached to the braking surface of the rear end cover for braking, and the conical rotor is in a braking state.
Furthermore, the conical rotor axially moves 1.5-3 mm to the tail end of the shaft when the conical rotor is powered on, and moves 1.5-3 mm to the power end of the shaft extension when the conical rotor is powered off.
Furthermore, the braking surface of the fan braking wheel is an inner conical surface, the braking surface of the rear end cover is an outer conical surface, and the fan braking wheel moves towards the shaft extension power end and is in contact friction braking with the braking surface of the rear end cover under the action of the pressure spring when the motor stops.
Furthermore, the rear end cover is made of a steel plate, so that compared with a conventional gray iron casting, the rear end cover is free of die cost and has increased structural strength.
Furthermore, the electromagnetic brake is a normally-closed power-off brake, and shares a power line with the conical rotor three-phase asynchronous motor through a rectifier.
Furthermore, the electromagnetic brake comprises a shaft sleeve, a friction plate, a fixing bolt, a hollow bolt, a protective cover, an armature, a coil, a brake main body, a sealing ring and a brake spring, wherein the friction plate and the shaft sleeve are in clearance fit with a spline which can axially slide, when the coil is electrified to generate a magnetic field, the armature is adsorbed to act, the armature is separated from the friction plate, and when the coil is powered off and demagnetized, the armature and the rear end cover clamp the friction plate to brake the conical rotor under the action of the brake spring.
The utility model discloses following beneficial effect has: the utility model discloses on current conventional single braking toper rotor three-phase asynchronous motor basis, through stopping formula stopper and electromagnetic brake dual-brake system in setting up, can stop when the formula stopper braking is malfunctioning in interior, rely on electromagnetic brake as the second stopper, undertake main brake function, avoid the hidden danger of single brake malfunction cause the accident, very big improvement the supporting electric block's that uses braking factor of safety, and dual-brake system provides double static braking torque, the brake time has been shortened, the wearing and tearing of brake face have been reduced, the maintenance cycle of stopper and friction disc has been prolonged, the equipment safety level has been improved, braking factor of safety has been increased, high reliability, high safety.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the electromagnetic brake of fig. 1.
Wherein the reference numerals are: the brake comprises an electromagnetic brake 1, a shaft sleeve 1-1, friction plates 1-2, fixing bolts 1-3, hollow bolts 1-4, a protective cover 1-5, an armature 1-6, a coil 1-7, a brake main body 1-8, a sealing ring 1-9, a brake spring 1-10, a front end cover 2, a conical rotor 3, a winding conical stator 4, a rear end cover 5, a rear end cover 6, a pressure spring 7 and a fan brake wheel 8.
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 internal-brake type double-brake conical rotor three-phase asynchronous motor comprises a conical rotor three-phase asynchronous motor, an internal-brake type brake and an electromagnetic brake 1, wherein the conical rotor three-phase asynchronous motor comprises a front end cover 2, a conical rotor 3, a winding conical stator 4, a rear end cover 5 and a rear end cover 6, both the conical rotor 3 and the winding conical stator 4 are conical, the conical rotor 3 is arranged in the winding conical stator 4, the internal-brake type brake comprises a pressure spring 7 and a fan brake wheel 8, the pressure spring 7 and the fan brake wheel 8 are fixed on the conical rotor 3, the braking surface of the fan brake wheel 8 is an inner conical surface, the braking surface of the rear end cover 5 is an outer conical surface, when the motor stops, under the action of the pressure spring 7, the fan brake wheel 8 moves towards a shaft-extending power end and contacts with the braking surface of the rear end cover 5 for friction braking, the electromagnetic brake 1 is fixedly arranged on the rear end cover, the rear end cover 6 is connected and fixed on the rear end cover 5.
In the embodiment, the electromagnetic brake 1 is a normally-closed power-off brake, shares a power line with a conical rotor three-phase asynchronous motor through a rectifier, as shown in figure 2, the electromagnetic brake 1 comprises a shaft sleeve 1-1, friction plates 1-2, fixing bolts 1-3, hollow bolts 1-4, a protective cover 1-5, armatures 1-6, coils 1-7, a brake main body 1-8, sealing rings 1-9 and brake springs 1-10, wherein the friction plates 1-2 and the shaft sleeve 1-1 are in spline clearance fit capable of axially sliding, when the coils 1-7 are electrified to generate a magnetic field, the adsorption armature 1-6 acts, the armature 1-6 is separated from the friction plate 1-2, when the coils 1-7 are de-energized and demagnetized, the armatures 1-6 and the rear end cover 6 clamp the friction plates 1-2 to brake the conical rotor 3 under the action of the brake springs 1-10.
Furthermore, the rear end cover 6 is made of a steel plate, so that compared with a conventional grey iron casting, the mould cost is avoided, and the structural strength is improved.
When a motor is electrified, after a magnetic field is established by a winding conical stator 4, a conical rotor 3 axially moves 1.5-3 mm towards the tail end of a shaft under the action of electromagnetic force, a fan brake wheel 8 is separated from a brake surface of a rear end cover 5, a shaft sleeve 1-1 is tightly connected with the conical rotor 3, a friction plate 1-2 is in clearance fit with a spline of the shaft sleeve 1-1, which can axially slide, an electromagnetic brake 1 and a conical rotor three-phase asynchronous motor can share a power line through a rectifier, a coil 1-7 generates a magnetic field when electrified, and an armature 1-6 is adsorbed to act, so that the armature 1-6 is separated from the friction plate 1-2;
when the motor is powered off, after the magnetic field of the winding conical stator 4 disappears, the conical rotor 3 axially moves 1.5-3 mm towards the shaft extension end under the action of the pressure spring 7, the fan brake wheel 8 is in fit brake with the brake surface of the rear end cover 5, the conical rotor 3 is in a brake state, the magnetic field disappears when the coils 1-7 are powered off, and the armatures 1-6 and the rear end cover 6 clamp the friction plates 1-2 to brake the conical rotor 3 under the action of the brake springs 1-10.
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 (7)
1. The utility model provides an interior formula of stopping two braking toper rotor three-phase asynchronous motor, its characterized in that, includes toper rotor three-phase asynchronous motor, interior formula stopper and electromagnetic braking ware (1) of stopping, toper rotor three-phase asynchronous motor includes front end housing (2), toper rotor (3), has winding toper stator (4), rear end cap (5) and rear end cover (6), interior formula stopper of stopping includes pressure spring (7) and fan braked wheel (8), pressure spring (7) and fan braked wheel (8) are fixed on toper rotor (3), electromagnetic braking ware (1) is fixed on rear end cover (5) through rear end cover (6).
2. The internal-brake type double-brake conical rotor three-phase asynchronous motor according to claim 1, characterized in that: the conical rotor (3) and the winding conical stator (4) are both conical, the conical rotor (3) is arranged in the winding conical stator (4), when the motor is powered on, the conical rotor (3) axially moves towards the tail end of the shaft under the action of electromagnetic force, the fan brake wheel (8) is separated from the brake surface of the rear end cover (5), when the motor is powered off, the conical rotor (3) moves towards the shaft extension power end, the fan brake wheel (8) is attached to the brake surface of the rear end cover (5) for braking, and the conical rotor (3) is in a brake state.
3. The internal-brake type double-brake conical rotor three-phase asynchronous motor according to claim 2, characterized in that: the conical rotor (3) axially moves 1.5-3 mm to the tail end of the shaft when being electrified, and moves 1.5-3 mm to the power end of the shaft extension when being powered off.
4. The internal-brake type double-brake conical rotor three-phase asynchronous motor according to claim 3, characterized in that: the braking surface of the fan braking wheel (8) is an inner conical surface, the braking surface of the rear end cover (5) is an outer conical surface, and when the motor stops, the fan braking wheel (8) moves towards the shaft extension power end and is in contact friction braking with the braking surface of the rear end cover (5) under the action of the pressure spring (7).
5. The internal-brake type double-brake conical rotor three-phase asynchronous motor according to claim 4, characterized in that: the rear end cover (6) is made of a steel plate.
6. The internal-brake type double-brake conical rotor three-phase asynchronous motor according to claim 5, characterized in that: the electromagnetic brake (1) is a normally-closed power-off brake and shares a power line with the conical rotor three-phase asynchronous motor through a rectifier.
7. The internal-brake type double-brake conical rotor three-phase asynchronous motor according to claim 6, characterized in that: the electromagnetic brake (1) comprises a shaft sleeve (1-1), friction plates (1-2), fixing bolts (1-3), hollow bolts (1-4), a protective cover (1-5), armatures (1-6), coils (1-7), a brake main body (1-8), sealing rings (1-9) and brake springs (1-10), the friction plate (1-2) and the shaft sleeve (1-1) are in clearance fit with a spline which can axially slide, when the coils (1-7) are electrified to generate a magnetic field, the adsorption armatures (1-6) act, the armatures (1-6) are separated from the friction plates (1-2), when the coils (1-7) are de-energized and demagnetized, the armatures (1-6) and the rear end cover (6) clamp the friction plates (1-2) to brake the conical rotor (3) under the action of the brake springs (1-10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020931043.2U CN211908614U (en) | 2020-05-28 | 2020-05-28 | Internal-brake type double-brake conical rotor three-phase asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020931043.2U CN211908614U (en) | 2020-05-28 | 2020-05-28 | Internal-brake type double-brake conical rotor three-phase asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211908614U true CN211908614U (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020931043.2U Active CN211908614U (en) | 2020-05-28 | 2020-05-28 | Internal-brake type double-brake conical rotor three-phase asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211908614U (en) |
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2020
- 2020-05-28 CN CN202020931043.2U patent/CN211908614U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211231 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 |
|
| TR01 | Transfer of patent right |