CN102678887B - Reducer and motor brake thereof - Google Patents

Reducer and motor brake thereof Download PDF

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Publication number
CN102678887B
CN102678887B CN201110056084.7A CN201110056084A CN102678887B CN 102678887 B CN102678887 B CN 102678887B CN 201110056084 A CN201110056084 A CN 201110056084A CN 102678887 B CN102678887 B CN 102678887B
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Prior art keywords
output shaft
positioning element
speed reducer
passage
braking positioning
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CN201110056084.7A
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CN102678887A (en
Inventor
余家红
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HONGMEN ADVANCED TECHNOLOGY Corp
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HONGMEN ADVANCED TECHNOLOGY Corp
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Abstract

The invention discloses a reducer and a motor brake thereof. The reducer comprises a front cover, a box, a rear cover, a reducer output shaft and a toothed output shaft. A first end of the toothed output shaft matches with the reducer output shaft to drive the same to rotate. A second end of the toothed output shaft is provided with a channel containing the end of a brake positioning part of the motor brake. The motor brake comprises the brake positioning part, a friction plate and a brake disc. A first end of the brake positioning part is located in the channel at the second end of the toothed output shaft and is capable of axially sliding in the channel. A second end of the brake positioning part matches with an output shaft of a driving device. The friction plate is fixed on the rear cover. The brake disc is fixed to the outside of the brake positioning part at the second end thereof. The brake disc can be contacted with or separated from the friction plate to achieve self-locking and unlocking of the reducer. The mechanical motor brake replaces an electromagnet brake mechanism, and accordingly the defects of the electromagnet brake mechanism are overcome. The motor brake is stable in operation, reliable and durable.

Description

The motor brake of speed reducer and use thereof
Technical field
Present invention relates in general to technical field of mechanical transmission, more specifically, relate to the motor brake of a kind of speed reducer and use thereof.
Background technique
Existing motor brake generally adopts electromagnet brake modes, usually at motor rear cover, the brake wheel with the central axis of rotor is housed, bonnet inside is equipped with one end and is leaned the spring in adjusting screw, and be surrounded with electromagnetic coil outside spring, the other end of spring leans on armature.When electrical power, electromagnetic coil produces axial magnetic control power, makes armature Compress Spring, axially leaves the friction plate of brake wheel, motor rotates, when motor power-off, the axial magnetic control power of electromagnetic coil disappears, and recovers deformation produce elastic force at spring, armature contacts with the friction plate of brake wheel under the elastic force of spring, produce surface friction drag, motor is stopped gradually, wherein can by adjusting screw Regulation spring to the elastic force of armature.
But, existing this electromagnet braking mechanism, it makes complexity, required precision is high, and easily producing fault, such as, when there is overvoltage or excess current, can electromagnetic coil be burnt out, cause brake failure, if brake failure and motor non-power-off time, friction plate can make rotor force to stop operating, and electric current still inputs motor coil motor coil is burned.Further, the magnetic force that electromagnet braking mechanism produces easily attracts dust impurity to enter motor, causes damage to motor.
Summary of the invention
The present invention aims to provide the motor brake of a kind of speed reducer and use thereof, adopts mechanical type braking mechanism to substitute existing electromagnet braking mechanism, fundamentally solves electromagnet braking mechanism Problems existing.
A kind of speed reducer provided by the invention has the case structure be made up of protecgulum, casing and bonnet, and this speed reducer comprises:
Speed reducer output shaft, its first end is positioned at described casing, and the second end stretches out the rotary motion that protecgulum produces for outwards transmitting drive unit;
Band tooth output shaft, be positioned at described casing, its first end coordinates with described speed reducer output shaft to drive this speed reducer output shaft to rotate, and the second end has the passage of the braking positioning element end holding mechanical motor brake;
The mechanical motor brake that wherein this speed reducer uses comprises:
Braking positioning element, be positioned at described casing, its first end is positioned at the passage of described band tooth output shaft second end and can slides axially at this passage, and the second end coordinates with the output shaft of described drive unit;
Friction plate, is positioned at described casing and is fixed on described bonnet;
Brake disc, be positioned at described casing, it is in the external stability of described braking positioning element second end and this braking positioning element, to contact or be separated to make when described braking positioning element slides axially in described band tooth output shaft second end passage this brake disc with described friction plate.
Wherein, the first end of described band tooth output shaft to be coordinated with the first end of described speed reducer output shaft by gear pair this speed reducer output shaft is rotated with the rotation of described band tooth output shaft.
The first end of described braking positioning element has axial passage, this passage is axially arranged with Compress Spring, in the passage of the second end of described band tooth output shaft, between the vias inner walls of the second end of described braking positioning element first end outer wall and described band tooth output shaft, be provided with many steel balls.
In the first mode of execution of the present invention, the second end of described braking positioning element has spiral concave surface and boss, and described motor output shaft has the spiral end face coordinated with described spiral concave surface and boss.
In the second mode of execution of the present invention, described motor output shaft has spiral concave surface and boss, and the second end of described braking positioning element has the spiral end face coordinated with described spiral concave surface and boss.
In the third mode of execution of the present invention, described second end is coordinated by clutch shaft with between the output shaft of described drive unit.
Wherein, the second end of described braking positioning element has spiral concave surface and boss, and the first end of described clutch shaft has the spiral end face coordinated with described spiral concave surface and boss, and the second end is connected with the output shaft of described drive unit; Or the first end of described clutch shaft has spiral concave surface and boss, and the second end is connected with the output shaft of described drive unit, the second end of described braking positioning element has the spiral end face coordinated with described spiral concave surface and boss.
In the present invention, described drive unit output shaft has key portion, the second end of described clutch shaft has the keyway coordinated with this key portion; Or the second end of described clutch shaft has key portion, described drive unit output shaft has the keyway coordinated with this key portion.
By implementing the motor brake of a kind of speed reducer of the present invention and use thereof, mechanical motor brake is adopted to substitute electromagnet braking mechanism, as mentioned above, it is formed primarily of braking positioning element, friction plate and brake disc, make simple, do not need picture electromagnet braking mechanism so highi degree of accuracy, and completely avoid the fault that electromagnet braking mechanism brings, it is stable, reliable, durable.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of a kind of speed reducer according to embodiment of the present invention;
Fig. 2 is the stereogram of a kind of speed reducer according to embodiment of the present invention;
Fig. 3 is the rear view of speed reducer shown in Fig. 2;
Fig. 4 A is according to the speed reducer of the embodiment of the present invention sectional view along B-B direction in Fig. 3;
Fig. 4 B is according to the motor of the embodiment of the present invention sectional view along B-B direction in Fig. 3
Fig. 5 is the sectional view in A-A direction in Fig. 4 A;
Fig. 6 is the schematic diagram of brake positioning element according to a kind of speed reducer of embodiment of the present invention and clutch shaft.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, further combined with accompanying drawing, the present invention is explained in detail below.
As Fig. 1,2,3, shown in 4A, 4B, a kind of speed reducer provided by the invention has the case structure be made up of protecgulum 1, casing 2 and bonnet 3, and this speed reducer comprises;
Speed reducer output shaft 10, its first end is positioned at casing 2, and the second end stretches out the rotary motion that protecgulum 1 produces for outwards transmitting drive unit (such as motor 4);
Band tooth output shaft 12, be fixed in casing 2 by two bearings, one of them bearing is positioned on protecgulum 1, another bearing is arranged in casing 2, the first end of this band tooth output shaft 12 is rotatably coordinated with the bearing be positioned on protecgulum 1 and is coordinated with described speed reducer output shaft 10 by gear pair 11, rotate with the rotation of described band tooth output shaft 12 to make this speed reducer output shaft 10, second end is connected rotationally with the bearing being arranged in casing 2, and this second end has the passage of braking positioning element 20 end holding mechanical motor brake.It should be noted that, the present invention is not limited thereto, and band tooth output shaft 12 can adopt the present invention's other modes known to coordinate to realize the transmission of described rotation with speed reducer output shaft 10.
The mechanical motor brake that wherein this speed reducer uses comprises:
Braking positioning element 20, be positioned at casing 2, its first end is positioned at the passage of described band tooth output shaft 12 second end and can slides axially at this passage, and the second end coordinates with the output shaft of motor 4;
Friction plate 30, be positioned at casing 2 and be fixed on bonnet 3, the disc that its shape can run through for center as shown in Figure 1, but the present invention is not limited to this, also can be other shapes, quadrilateral, Hexagon etc. that such as center is run through, produce frictional force as long as can coordinate with brake disc 23;
Brake disc 23, be positioned at casing 2, it is braking the external stability of positioning element 20 second end and this braking positioning element 20, particularly, second end outside of braking positioning element 20 is formed with flat position 202, brake disc 23 is fixed on flat position 202 by jump ring 25, to make when braking positioning element 20 and sliding axially in band tooth output shaft 12 second end passage, this brake disc 23 contacts with described friction plate 30 or is separated, thus generation frictional force realizes motor brake or removes brake, certain those skilled in the art is to be understood that, brake disc 23 can adopt other modes well known in the art to interfix with braking positioning element 20.
In embodiments of the present invention, the first end of described braking positioning element 20 has axial passage, this passage is axially arranged with Compress Spring 21, in the passage of the second end of described band tooth output shaft 12, many steel balls 13 (such as 3,6,9 etc.) are provided with between the vias inner walls of the second end of described braking positioning element 20 first end outer wall and described band tooth output shaft 12, wherein, be with tooth output shaft 12, brake the structural relation of positioning element 20, steel ball 13 and Compress Spring 21 as shown in Figure 5.
Second end of described braking positioning element 20 is coordinated with the output shaft 40 of motor 4 by clutch shaft 24, as shown in Figure 6, second end of described braking positioning element 20 has spiral concave surface (being illustrated as A ' face and B ' face) and boss 201, the first end of described clutch shaft 24 has the spiral end face (being illustrated as A face and B face) coordinated with described A ' face, B ' face and boss 201, and the second end is connected with the output shaft 40 of motor 4.Specifically, as illustrated in figures 4 a and 4b, second end of described clutch shaft 24 has the keyway coordinated with the key portion on the output shaft 40 of motor, certain the present invention is not limited to this, described clutch shaft can also adopt other modes to be connected with the output shaft of motor, and such as, the second end of described clutch shaft has key portion, the keyway that on described output shaft, tool coordinates with key portion, or adopt other Placements well known in the art.
When motor 4 rotates, its output shaft 40 drives clutch shaft 24 to rotate, because the resistance of gear pair 11 produces certain resistance by band tooth output shaft 12, the spiral end face B face of clutch shaft 24 is made to rotate the peak (β point) of extremely braking positioning element 20 spiral concave surface, the braking boss on positioning element 20 both sides and the spiral end face of clutch shaft 24 form couple, realize synchronous axial system, now Compress Spring 21 is compressed, namely brake disc 23 and braking positioning element 20 are made brake disc 23 be separated with friction plate 30 by clutch shaft 24 forward certain distance, thus speed reducer unlocks (i.e. brake off), braking positioning element 20 drives band tooth output shaft 12 to rotate by steel ball 13, thus output shaft 40 synchronous axial system of band tooth output shaft 12 and motor 4, speed reducer output shaft 10 is driven to rotate further by gear pair 11, thus outwards transmit the rotary motion of motor 4, when motor 4 stops, braking positioning element 20 resets under the effect of Compress Spring 21, A face, the B face of its A ' face, B ' face and clutch shaft 24 coincide, now A face and B face are in the minimum point (α point) of the spiral concave surface of braking positioning element 20, brake disc 23 contacts with friction plate 30, and under the effect of Compress Spring 21, between brake disc 23 and friction plate 30, produce certain frictional force, realize speed reducer self-locking.
In another embodiment of the invention, the first end of described clutch shaft 24 has spiral concave surface and boss, second end is connected with the output shaft of motor, second end of described braking positioning element 20 has the spiral end face coordinated with described spiral concave surface and boss, thus realizes coordinating of braking positioning element 20 and clutch shaft 24.Certainly, the present invention is also not limited to this, other modes can also be adopted to realize between described braking positioning element 20 and clutch shaft 24, as long as can realize above-mentioned purpose.
In other mode of executions of the present invention, described braking positioning element 20 can adopt other modes to coordinate with the output shaft of motor 4, or clutch shaft 24 can be omitted, such as, second end of described braking positioning element 20 has spiral concave surface and boss, and the output shaft 40 of described motor has the spiral end face coordinated with described spiral concave surface and boss.Or described motor output shaft 40 has spiral concave surface and boss, the second end of described braking positioning element 20 has the spiral end face coordinated with described spiral concave surface and boss.
From the above, embodiment of the present invention adopts mechanical motor brake to substitute electromagnet braking mechanism, as mentioned above, its master is made up of braking positioning element, friction plate and brake disc, make simple, and do not need picture electromagnet braking mechanism so highi degree of accuracy, and completely avoid the fault that electromagnet braking mechanism brings, it is stable, reliable, durable.
More than describe the present invention in conjunction with embodiment; these embodiments are only exemplary; can not limit the protection domain of the present invention with this, those skilled in the art can carry out various amendment, change or replacement under the prerequisite not departing from essence of the present invention.Therefore, the various equivalent variations done according to the present invention, still belong to the scope that the present invention is contained.

Claims (16)

1. a speed reducer, it has the case structure be made up of protecgulum, casing and bonnet, it is characterized in that, described speed reducer also comprises:
Speed reducer output shaft, its first end is positioned at described casing, and the second end stretches out the rotary motion that protecgulum produces for outwards transmitting drive unit;
Band tooth output shaft, be positioned at described casing, its first end coordinates with described speed reducer output shaft to drive this speed reducer output shaft to rotate, and the second end has the passage holding braking positioning element end;
Described braking positioning element, is positioned at described casing, and its first end is positioned at the passage of described band tooth output shaft second end and can slides axially at this passage, and the second end coordinates with the output shaft of described drive unit;
Friction plate, is positioned at described casing and is fixed on described bonnet;
Brake disc, be positioned at described casing, it is in the external stability of described braking positioning element second end and this braking positioning element, to contact or be separated to make when described braking positioning element slides axially in described band tooth output shaft second end passage this brake disc with described friction plate;
Second end of described braking positioning element is coordinated by the output shaft of clutch shaft with described drive unit;
Wherein, the second end of described braking positioning element has spiral concave surface and boss, and the first end of described clutch shaft has the spiral end face coordinated with described spiral concave surface and boss, and the second end is connected with the output shaft of described drive unit; Or the first end of described clutch shaft has spiral concave surface and boss, and the second end is connected with the output shaft of described drive unit, the second end of described braking positioning element has the spiral end face coordinated with described spiral concave surface and boss.
2. speed reducer as claimed in claim 1, it is characterized in that, the first end of described band tooth output shaft coordinates this speed reducer output shaft is rotated with the rotation of described band tooth output shaft with the first end of described speed reducer output shaft by gear pair.
3. speed reducer as claimed in claim 1, it is characterized in that, the first end of described braking positioning element has axial passage, and this passage is axially arranged with Compress Spring.
4. the speed reducer as described in claim 1 or 3, is characterized in that, in the passage of the second end of described band tooth output shaft, is provided with many steel balls between the vias inner walls of the second end of described braking positioning element first end outer wall and described band tooth output shaft.
5. speed reducer as claimed in claim 1, it is characterized in that described drive unit output shaft has key portion, the second end of described clutch shaft has the keyway coordinated with this key portion;
Or
Second end of described clutch shaft has key portion, described drive unit output shaft has the keyway coordinated with this key portion.
6. a speed reducer, it has the case structure be made up of protecgulum, casing and bonnet, it is characterized in that, described speed reducer also comprises:
Speed reducer output shaft, its first end is positioned at described casing, and the second end stretches out the rotary motion that protecgulum produces for outwards transmitting drive unit;
Band tooth output shaft, be positioned at described casing, its first end coordinates with described speed reducer output shaft to drive this speed reducer output shaft to rotate, and the second end has the passage holding braking positioning element end;
Described braking positioning element, is positioned at described casing, and its first end is positioned at the passage of described band tooth output shaft second end and can slides axially at this passage, and the second end coordinates with the output shaft of described drive unit;
Friction plate, is positioned at described casing and is fixed on described bonnet;
Brake disc, be positioned at described casing, it is in the external stability of described braking positioning element second end and this braking positioning element, to contact or be separated to make when described braking positioning element slides axially in described band tooth output shaft second end passage this brake disc with described friction plate;
Wherein, the second end of described braking positioning element has spiral concave surface and boss, and the output shaft of described drive unit has the spiral end face coordinated with described spiral concave surface and boss; Or the output shaft of described drive unit has spiral concave surface and boss, the second end of described braking positioning element has the spiral end face coordinated with described spiral concave surface and boss.
7. speed reducer as claimed in claim 6, it is characterized in that, the first end of described band tooth output shaft coordinates this speed reducer output shaft is rotated with the rotation of described band tooth output shaft with the first end of described speed reducer output shaft by gear pair.
8. speed reducer as claimed in claim 6, it is characterized in that, the first end of described braking positioning element has axial passage, and this passage is axially arranged with Compress Spring.
9. the speed reducer as described in claim 6 or 8, is characterized in that, in the passage of the second end of described band tooth output shaft, is provided with many steel balls between the vias inner walls of the second end of described braking positioning element first end outer wall and described band tooth output shaft.
10. for a motor brake for speed reducer, it is characterized in that, this motor brake comprises:
Braking positioning element, its first end is positioned at the passage of the band tooth output shaft end of described speed reducer and can slides axially at this passage, and the second end coordinates with the output shaft of described drive unit;
Friction plate, is positioned at described speed reducer and is fixed on the bonnet of speed reducer;
Brake disc, be positioned at described speed reducer, it is in the external stability of described braking positioning element second end and this braking positioning element, to contact or be separated to make when described braking positioning element slides axially in the passage of described band tooth output shaft end this brake disc with described friction plate;
Second end of described braking positioning element is coordinated by the output shaft of clutch shaft with described drive unit;
Wherein, the second end of described braking positioning element has spiral concave surface and boss, and the first end of described clutch shaft has the spiral end face coordinated with described spiral concave surface and boss, and the second end is connected with the output shaft of described drive unit; Or the first end of described clutch shaft has spiral concave surface and boss, and the second end is connected with the output shaft of described drive unit, the second end of described braking positioning element has the spiral end face coordinated with described spiral concave surface and boss.
11. motor brakes as claimed in claim 10, it is characterized in that, the first end of described braking positioning element has axial passage, and this passage is axially arranged with Compress Spring.
12. motor brakes as claimed in claim 11, is characterized in that, in the passage of described band tooth output shaft end, are provided with many steel balls between described braking positioning element first end outer wall and the vias inner walls of described band tooth output shaft end.
13. motor brakes as claimed in claim 10, is characterized in that described drive unit output shaft has key portion, and the second end of described clutch shaft has the keyway coordinated with this key portion,
Or
Second end of described clutch shaft has key portion, described drive unit output shaft has the keyway coordinated with this key portion.
14. 1 kinds, for the motor brake of speed reducer, is characterized in that, this motor brake comprises:
Braking positioning element, its first end is positioned at the passage of the band tooth output shaft end of described speed reducer and can slides axially at this passage, and the second end coordinates with the output shaft of described drive unit;
Friction plate, is positioned at described speed reducer and is fixed on the bonnet of speed reducer;
Brake disc, be positioned at described speed reducer, it is in the external stability of described braking positioning element second end and this braking positioning element, to contact or be separated to make when described braking positioning element slides axially in the passage of described band tooth output shaft end this brake disc with described friction plate;
Wherein, the second end of described braking positioning element has spiral concave surface and boss, and the output shaft of described drive unit has the spiral end face coordinated with described spiral concave surface and boss; Or the output shaft of described drive unit has spiral concave surface and boss, the second end of described braking positioning element has the spiral end face coordinated with described spiral concave surface and boss.
15. motor brakes as claimed in claim 14, it is characterized in that, the first end of described braking positioning element has axial passage, and this passage is axially arranged with Compress Spring.
16. motor brakes as claimed in claim 15, is characterized in that, in the passage of described band tooth output shaft end, are provided with many steel balls between described braking positioning element first end outer wall and the vias inner walls of described band tooth output shaft end.
CN201110056084.7A 2011-03-07 2011-03-07 Reducer and motor brake thereof Active CN102678887B (en)

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Application Number Priority Date Filing Date Title
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CN102678887B true CN102678887B (en) 2015-02-25

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DE102013018946B4 (en) * 2013-11-12 2024-02-29 Zf Active Safety Gmbh Electromechanically and hydraulically actuated vehicle brake with optional self-locking
DE102013020468A1 (en) * 2013-12-06 2015-06-11 Lucas Automotive Gmbh Electromechanically and hydraulically actuated motor vehicle brake with optional self-locking
CN104539088A (en) * 2015-01-24 2015-04-22 深圳城邦机电工业有限公司 Gear reducer motor
CN105119417B (en) * 2015-09-16 2017-11-21 宁波市镇海甬亚机电科技有限公司 A kind of tube shaped electric machine
CN105125384B (en) * 2015-09-22 2017-04-19 谷林电器(深圳)有限公司 Sliding and rotation transmission mechanism used in walk assisting device and walk assisting device
CN105546099A (en) * 2016-01-26 2016-05-04 张立 Industrial speed reducer
CN109114204B (en) * 2018-09-10 2022-03-11 奇瑞商用车(安徽)有限公司 Commercial vehicle wheel reduction gear shell
CN109139873A (en) * 2018-09-10 2019-01-04 奇瑞商用车(安徽)有限公司 The commercial wheel side reducer shell of integrated caliper brake disc installation
CN109571188B (en) * 2018-11-14 2019-11-01 浙江携腾机械科技股份有限公司 Speed reducer torque running-in tooling

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