CN205319854U - Electromagnetic brake - Google Patents
Electromagnetic brake Download PDFInfo
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- CN205319854U CN205319854U CN201520923011.7U CN201520923011U CN205319854U CN 205319854 U CN205319854 U CN 205319854U CN 201520923011 U CN201520923011 U CN 201520923011U CN 205319854 U CN205319854 U CN 205319854U
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- yoke
- armature
- braking dish
- motor
- brake
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Abstract
The utility model discloses an electromagnetic brake, including motor shaft, motor rear end cap, yoke, armature and brake disc, the brake disc cover rotates along with motor shaft at motor shaft's rear portion, wherein: the yoke is fixed on the motor rear end cap, and armature is in between yoke and the brake disc, and the friction disc is fixed on armature, the friction surface clearance fit of brake disc and friction disc, and armature passes through the brake spring to be connected with the yoke, and when the yoke outage, armature is pushed to brake disc to the brake spring, makes friction disc and brake disc contact braking, and when the yoke circular telegram, the yoke attracts armature, braking spring compression, brake disc and friction disc separate. The structure of stopper has been simplified to this stopper, has still gained the technological effect that the brake disc is connected reliable and stable, as to reduce motor noise with the motor shaft, is improved the motor heat dissipation function.
Description
Technical field
The industries such as this utility model belongs to the technical field of dynamic braking device, relates generally to lifting, machinery, building, specifically, are a kind of electromagnetic brakes.
Background technology
The state-of-the-art technology that the brake of crane operation soft start brake motor uses is direct solenoid structure. When its principle is electrical power, electromagnetic device passes through a commutator, transfers the alternating current in motor to unidirectional current, produces magnetic force by DC electromagnet, holds armature, and frictional disk separates with back end cover for motor, electric machine rotation. When, after motor power-off, magnetic force disappears, armature is under the active force of braking tripping spring, and pressing friction dish, frictional disk produces moment, motor stalls with rear end cap friction.
The shortcoming of the brake used now:
Armature braking instability, brake compensation is poor, and the noise that braking dish produces is relatively big, affects empty load of motor electric current.
The insufficient strength of the little tooth that existing braking dish and motor shaft link, it is easy to the situation of fragmentation occurs, tooth cooperation defective tightness between tooth, it is easy to cause noise and abrasion excessive.
Summary of the invention
The technical problems to be solved in the utility model is to provide the brake of a kind of novel soft start threephase asynchronous machine, this brake simplifies the structure of brake, also achieves braking dish and motor shaft stable connection is reliable, reduce the noise of motor, improve the technique effect of motor radiating function.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is:
A kind of electromagnetic brake, including machine shaft, back end cover for motor, yoke, armature and braking dish, braking dish is enclosed within the rear portion of machine shaft and rotates with machine shaft, wherein: yoke is fixed on motor rear end lid, armature is between yoke and braking dish, friction plate is fixed on armature, the rubbing surface matched in clearance of braking dish and friction plate, armature is connected with yoke by tripping spring, when yoke power-off, armature is pushed to braking dish by tripping spring, make friction plate and brake disc braking, when yoke is energized, yoke attracts armature, tripping spring compresses, braking dish separates with friction plate.
For optimizing technique scheme, the concrete measure taked also includes:
The inner ring of above-mentioned braking dish and machine shaft are connected by flat key keyway.
Above-mentioned braking dish is provided with flabellum.
Above-mentioned flabellum is one-body molded with braking dish.
Arranging several alignment pin in above-mentioned yoke, armature is set on alignment pin slide anteroposterior.
Above-mentioned alignment pin has and has at least three, and circumferentially direction is evenly arranged in yoke, and the side of each alignment pin arranges a tripping spring, tripping spring also circumferentially direction uniformly lay.
Above-mentioned braking dish uses screw rod and machine shaft to fix, and screw rod is connected with motor shaft by holding screw, regulates the gap between braking dish and friction plate by turn screw rod.
Above-mentioned machine shaft rear portion is provided with adjustment pad, and braking dish front end is pressed on adjustment pad.
Compared with prior art, a kind of electromagnetic brake of the present utility model, its principle is: when motor is when energising, brake portion (yoke) solenoid produces magnetic field, is separated with motor by frictional disk, and motor starts running: when after motor power-off, the magnetic field of solenoid disappears, frictional disk, under the active force of three tripping springs, produces moment with the friction of braking dish, thus motor shuts down.
This utility model by the bonnet of yoke and motor is integrated, uniform tripping spring between armature and braking dish, adjust armature pressure stability, reduce motor noise; Also by cancelling original structure connected by little gear and braking dish, change flat key keyway into and make motor rotary shaft and braking dish connect, the situation of the easy fragmentation of little gear before eliminating. Compared with old-fashioned brake, this utility model also add fan blade, improves motor radiating function, simplifies the structure of brake, also reduces the volume of brake.
Accompanying drawing explanation
Fig. 1 is brake structural schematic diagram of the prior art;
Fig. 2 is structural representation of the present utility model.
Wherein being labeled as of Fig. 1: motor shaft D1, machine bonnet D2, geared sleeve D3, brake shell D4, frictional disk D5, electric magnet D6, tripping spring D7, regulate screw D8.
Fig. 2 is labeled as: machine shaft 1, back end cover for motor 2, yoke 3, braking dish 4, friction plate 5, tripping spring 6, flat key keyway 7, flabellum 8, adjustment pad 9, armature 10, holding screw 11.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is elaborated.
A kind of electromagnetic brake of the present utility model, including machine shaft 1, back end cover for motor 2, yoke 3, armature 10 and braking dish 4, braking dish 4 is enclosed within the rear portion of machine shaft 1 and rotates with machine shaft 1, wherein: yoke 3 is fixed on back end cover for motor 2, armature 10 is between yoke 3 and braking dish 4, friction plate 5 is fixed on armature 10, the rubbing surface matched in clearance of braking dish 4 and friction plate 5, armature 10 is connected with yoke 3 by tripping spring 6, when yoke 3 power-off, tripping spring 6 pushes armature 10 to braking dish 4, friction plate 5 is made to contact braking with braking dish 4, when yoke 3 is energized, yoke 3 attracts armature 10, tripping spring 6 compresses, braking dish 4 separates with friction plate 5.
In embodiment, the inner ring of braking dish 4 is connected by flat key keyway 7 with machine shaft 1.
In embodiment, braking dish 4 is provided with flabellum 8.
In embodiment, flabellum 8 is one-body molded with braking dish 4.
In embodiment, yoke 3 arranging several alignment pin, armature 10 is set on alignment pin slide anteroposterior.
In embodiment, alignment pin has and has at least three, and circumferentially direction is evenly arranged in yoke 3, and the side of each alignment pin arranges a tripping spring 6, tripping spring 6 also circumferentially direction uniformly lay.
In embodiment, braking dish 4 uses screw rod to fix with machine shaft 1, and screw rod is connected with motor shaft 1 by holding screw 11, regulates the gap between braking dish 4 and friction plate 5 by turn screw rod.
In embodiment, machine shaft 1 rear portion is provided with adjustment pad 9, and braking dish 4 front end is pressed on adjustment pad 9.
Fig. 1 is the electromagnetic brake of prior art, and it includes motor shaft D1, motor rear cover D2 and brake shell D4. Brake shell D4 is fixed on motor rear cover D2, frictional disk D5 it is provided with in brake shell D4, the side of frictional disk D5 contacts with motor rear cover D2, opposite side at frictional disk D5 is sequentially provided with armature and electric magnet D6, and armature is connected tripping spring D7 and regulates one end traverse rear end cap D2 of screw D8. machine shaft D1 and connected by geared sleeve D3 and frictional disk D5.
During motor work, frictional disk D5 and motor rear cover D2 departs from, and makes synchronous axial system with machine shaft D1 under the drive of geared sleeve D3.
The above is old-fashioned a kind of brake structure of this product, it is noted that easily get lines crossed when working at ordinary times geared sleeve D5 and frictional disk D3 of this brake structure is producing to break, and causes brakeless effect. Not having fan, radiating effect is not good.
A kind of electromagnetic brake of the present utility model, as in figure 2 it is shown, include motor shaft, yoke 3, friction plate 5 and braking dish 4, the critical piece such as tightening screw rod. Yoke 3 is directly docked with motor housing, it is arranged over friction plate 5 in yoke 3, the part that friction plate 5 side is connected with yoke 3 is provided with three alignment pins and three springs, together with the fan of this brake is directly connected to braking dish 4, braking dish 4 has the side of friction material to coordinate with friction plate 5, braking dish 4 uses screw rod to fix, and is connected with motor shaft by holding screw, and screw rod together coordinates, with adjusting pad 9, the gap regulating friction plate 5 with braking dish 4.
Its operation principle is: when motor is when energising, brake portion (yoke 3) solenoid produces magnetic field, frictional disk is separated with motor, motor starts running: when after motor power-off, the magnetic field of solenoid disappears, frictional disk, under the active force of three tripping springs 6, produces moment with braking dish 4 friction, thus motor shuts down.
This utility model by the bonnet of yoke 3 and motor is integrated, uniform tripping spring 6 between armature 10 and braking dish 4, adjust armature 10 pressure stability, reduce motor noise; Also by cancelling original structure connected by little gear and braking dish 4, change flat key keyway 7 into and make motor rotary shaft and braking dish 4 connect, the situation of the easy fragmentation of little gear before eliminating. Compared with old-fashioned brake, this utility model also add fan blade, improves motor radiating function, simplifies the structure of brake, also reduces the volume of brake.
Below being only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment, and all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention. It should be pointed out that, for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be regarded as protection scope of the present invention.
Claims (8)
1. an electromagnetic brake, including machine shaft (1), back end cover for motor (2), yoke (3), armature (10) and braking dish (4), described braking dish (4) is enclosed within the rear portion of machine shaft (1) and rotates with machine shaft (1), it is characterized in that: described yoke (3) is fixed on back end cover for motor (2), described armature (10) is between yoke (3) and braking dish (4), friction plate (5) is fixed on armature (10), the rubbing surface matched in clearance of described braking dish (4) and friction plate (5), described armature (10) is connected with yoke (3) by tripping spring (6), when yoke (3) power-off, tripping spring (6) pushes armature (10) to braking dish (4), friction plate (5) is made to contact braking with braking dish (4), when yoke (3) is energized, yoke (3) attracts armature (10), tripping spring (6) compresses, braking dish (4) separates with friction plate (5).
2. a kind of electromagnetic brake according to claim 1, is characterized in that: the inner ring of described braking dish (4) and machine shaft (1) are connected by flat key keyway (7).
3. a kind of electromagnetic brake according to claim 2, is characterized in that: be provided with flabellum (8) on described braking dish (4).
4. a kind of electromagnetic brake according to claim 3, is characterized in that: described flabellum (8) is one-body molded with braking dish (4).
5. a kind of electromagnetic brake according to claim 4, is characterized in that: arrange several alignment pin in described yoke (3), and described armature (10) is set on alignment pin slide anteroposterior.
6. a kind of electromagnetic brake according to claim 5, it is characterized in that: described alignment pin has and has at least three, and circumferentially direction is evenly arranged in yoke (3), the side of each alignment pin arranges a tripping spring (6), and described tripping spring (6) also circumferentially uniformly lay by direction.
7. a kind of electromagnetic brake according to claim 1, it is characterized in that: described braking dish (4) uses screw rod to fix with machine shaft (1), described screw rod is connected with motor shaft (1) by holding screw (11), regulates the gap between braking dish (4) and friction plate (5) by turn screw rod.
8. a kind of electromagnetic brake according to claim 7, is characterized in that: described machine shaft (1) rear portion is provided with adjustment pad (9), and described braking dish (4) front end is pressed in adjustment pad (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520923011.7U CN205319854U (en) | 2015-11-19 | 2015-11-19 | Electromagnetic brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520923011.7U CN205319854U (en) | 2015-11-19 | 2015-11-19 | Electromagnetic brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205319854U true CN205319854U (en) | 2016-06-15 |
Family
ID=56311811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520923011.7U Active CN205319854U (en) | 2015-11-19 | 2015-11-19 | Electromagnetic brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205319854U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088510A (en) * | 2018-08-16 | 2018-12-25 | 居鹤华 | A kind of power loss internal contracting brake mechanism and its control method |
| CN110048544A (en) * | 2019-06-04 | 2019-07-23 | 河南锐思特科技有限公司 | A kind of crane metallurgy electromagnetic braking cone brake motor |
| CN110893698A (en) * | 2018-09-13 | 2020-03-20 | 上海旭恒精工机械制造有限公司 | Mechanism for controlling movement of belt plate of box pasting machine |
| CN114836880A (en) * | 2022-05-31 | 2022-08-02 | 杭州新丽旺机械设备有限公司 | Driving structure of loom |
| CN116388461A (en) * | 2023-04-22 | 2023-07-04 | 江苏恒鑫润翔机电制造有限公司 | Integrated braking permanent magnet motor |
| CN118473130A (en) * | 2024-07-09 | 2024-08-09 | 台邦电机工业集团有限公司 | Low-power electromagnetic braking motor device |
-
2015
- 2015-11-19 CN CN201520923011.7U patent/CN205319854U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088510A (en) * | 2018-08-16 | 2018-12-25 | 居鹤华 | A kind of power loss internal contracting brake mechanism and its control method |
| CN110893698A (en) * | 2018-09-13 | 2020-03-20 | 上海旭恒精工机械制造有限公司 | Mechanism for controlling movement of belt plate of box pasting machine |
| CN110048544A (en) * | 2019-06-04 | 2019-07-23 | 河南锐思特科技有限公司 | A kind of crane metallurgy electromagnetic braking cone brake motor |
| CN114836880A (en) * | 2022-05-31 | 2022-08-02 | 杭州新丽旺机械设备有限公司 | Driving structure of loom |
| CN114836880B (en) * | 2022-05-31 | 2024-02-27 | 杭州新丽旺机械设备有限公司 | Loom driving structure |
| CN116388461A (en) * | 2023-04-22 | 2023-07-04 | 江苏恒鑫润翔机电制造有限公司 | Integrated braking permanent magnet motor |
| CN118473130A (en) * | 2024-07-09 | 2024-08-09 | 台邦电机工业集团有限公司 | Low-power electromagnetic braking motor device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 211100 Dongshan Street East Road, Jiangning District, Nanjing City, Jiangsu Province, No. 98 Patentee after: NANJING HOISTING MOTOR GENERAL FACTORY Address before: Corning road in Jiangning District of Nanjing City, Jiangsu Province, No. 268 211100 Patentee before: NANJING HOISTING MOTOR GENERAL FACTORY |
|
| CP02 | Change in the address of a patent holder |