CN108131402B - Double-way memory alloy locking device - Google Patents
Double-way memory alloy locking device Download PDFInfo
- Publication number
- CN108131402B CN108131402B CN201611090160.5A CN201611090160A CN108131402B CN 108131402 B CN108131402 B CN 108131402B CN 201611090160 A CN201611090160 A CN 201611090160A CN 108131402 B CN108131402 B CN 108131402B
- Authority
- CN
- China
- Prior art keywords
- mounting plate
- brake
- double
- memory alloy
- device mounting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 31
- 238000005491 wire drawing Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000003578 releasing effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
- F16D49/16—Brakes with two brake-blocks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/14—Mechanical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/58—Mechanical mechanisms transmitting linear movement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The double-way memory alloy locking device comprises a brake device mounting plate 10, wherein the brake device mounting plate 10 is arranged on a fixed base 11, an unlocking guide wheel 1 and a double-way memory alloy wire 2 are arranged on the brake device mounting plate 10, one end of the double-way memory alloy wire 2 is fixed on the brake device mounting plate 10, is fixed on the surface of the mounting plate 10 through 3, winds around the surface of the brake device mounting plate 10, winds around the unlocking guide wheel 1, and the other end of the double-way memory alloy wire is connected with an unlocking wedge 9; the center of the brake mounting plate 10 is perforated, the rotary shaft 5 is passed through the hole, the left and right sides of the rotary shaft 5 are respectively contacted with the left brake shoe 4 and the right brake shoe 7 through the micro-engagement pair 8, the lower sides of the left brake shoe 4 and the right brake shoe 7 are connected with the brake plate spring 6, and the upper sides clamp the unlocking wedge 9.
Description
Technical Field
The technology belongs to the field of locking devices, and particularly relates to a double-pass memory alloy locking device.
Background
The rotary motion with a fixed shafting is one of the main motion forms in mechanical transmission. In the fields of inertial navigation test equipment, search tracking rotary tables and the like, the rotation of a shafting is the most dominant motion form. In order to meet the requirement of high precision, the two types of equipment usually use a direct-drive torque motor as a drive, and the motor is in a free rotation state under the condition of no power, but in the processes of debugging, transportation and the like of the two types of mechanical equipment, a rotating shaft system is sometimes required to be braked. For the purpose of braking the device, the common braking modes at present are mechanical bolts, electromagnetic brakes and the like. The mechanical latch type brake device is usually required to be plugged and unplugged manually, and is also provided with an electromagnetically driven latch, and the locking and unlocking actions of the latch are realized through electric control. The electromagnetic brake uses the electromagnet principle to control the braking and releasing actions of the rotary shaft system through a direct current power supply.
The locking structure of the bolt and the electromagnetic brake has certain structural size and larger installation space requirement. For miniature turntables with smaller design sizes, the two locking modes often cannot meet the braking requirements under the conditions of severe size limitation and smaller installation space. Current braking techniques often fail to meet the braking demands of tracking the turntable. The external electromagnetic brake has larger power consumption, and if the heat dissipation design is imperfect, the brake and the temperature rise of a braked shaft system are extremely easy to be caused, thereby influencing the installation accuracy of the shaft system.
Disclosure of Invention
The invention aims at: the double-pass memory alloy locking device solves the problems that a rotating shaft system with strict requirements on structural size and small installation space cannot be automatically locked and unlocked by the existing method, and can reduce power consumption and reduce temperature rise near a braking mechanism.
The technical scheme of the invention is as follows: the double-way memory alloy locking device comprises a brake device mounting plate, an unlocking guide wheel and a double-way memory alloy wire are arranged on the brake device mounting plate, one end of the double-way memory alloy wire is fixed on the brake device mounting plate, winds around the surface of the brake device mounting plate for one circle, and is connected with an unlocking wedge block after winding on the unlocking guide wheel; the center of the brake device mounting plate is provided with a hole, the rotary shaft passes through the hole, the left side and the right side of the rotary shaft are respectively contacted with the left brake shoe and the right brake shoe through micro-meshing pairs, the lower sides of the left brake shoe and the right brake shoe are connected with a brake plate spring, and the upper sides clamp the unlocking wedge blocks.
The brake mounting plate is mounted on the stationary base.
The double-pass memory alloy wire is fixed on the surface of the mounting plate through a wire drawing guide pair.
The invention has the remarkable effects that: compared with the prior art, the locking and braking device is more suitable for locking and braking occasions of the miniature rotary shaft system with strict structural size requirements and small installation space. The brake mechanism can fully use the circumferential dimension of the shafting, and simultaneously reduces the requirement on the axial dimension of the shafting as much as possible. The double-way memory alloy braking device can realize the release action of the shafting in ms-level time. The problem that the existing braking method cannot be used for automatically locking and unlocking the miniature rotary shaft system is solved.
Drawings
FIG. 1 is a schematic view of a locking device of a double-pass memory alloy according to the present invention
FIG. 2 is a side view of a locking device of a two-way memory alloy according to the present invention
In the figure: 1 unlocking guide wheel, 2 double-way memory alloy wire, 3 wire drawing guide pair, 4, left brake shoe, 5 rotary shaft, 6 brake plate spring, 7 right brake shoe, 8 micro-meshing pair, 9 unlocking wedge block, 10 brake device mounting plate and 11 fixed base
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific examples.
The double-way memory alloy locking device comprises a brake device mounting plate 10, wherein the brake device mounting plate 10 is arranged on a fixed base 11, an unlocking guide wheel 1 and a double-way memory alloy wire 2 are arranged on the brake device mounting plate 10, one end of the double-way memory alloy wire 2 is fixed on the brake device mounting plate 10, is fixed on the surface of the mounting plate 10 through 3, winds around the surface of the brake device mounting plate 10, winds around the unlocking guide wheel 1, and the other end of the double-way memory alloy wire is connected with an unlocking wedge 9; the center of the brake mounting plate 10 is provided with a hole, the rotary shaft 5 passes through the hole, the left side and the right side of the rotary shaft 5 are respectively contacted with the left brake shoe 4 and the right brake shoe 7 through the micro-meshing pair 8, the lower sides of the left brake shoe 4 and the right brake shoe 7 are connected with the brake plate spring 6, and the upper sides clamp the unlocking wedge 9;
if the braking of the rotary shaft system is released, the two ends of the double-way memory alloy wire 2 are electrified to 24V, and in the ms-level time after the electrification, the double-way memory alloy wire 2 can shrink, and simultaneously the unlocking wedge 9 is pulled to move upwards, so that the brake plate spring 6 is opened, the left brake shoe 4, the right brake shoe 7 and the rotary shaft 5 are separated, the micro-meshing pair 8 does not work, and the rotary shaft 5 can realize free rotation. In the whole electrifying process, the double-pass memory alloy wire 2 is in a contracted state, the shafting is correspondingly in a brake release state, the voltage at two ends of the double-pass memory alloy wire 2 is reduced to 10V, and the double-pass memory alloy is kept in the contracted state, but the power consumption is obviously reduced, so that the brake release function in a low-power state is realized. When the braking is to be realized, the power supply to the double-pass memory alloy wire 2 is disconnected, the double-pass memory alloy wire 2 is restored to the original length within a few seconds, the unlocking wedge 9 moves downwards under the action of the clamping force of the braking plate spring 6, the braking plate spring 6 drives the left braking shoe 4 and the right braking shoe 7, and the clasping state of the rotating shaft 5 is restored through the friction force generated by the micro-meshing pair 8. The shafting realizes braking again.
Claims (1)
1. A double-way memory alloy locking device is characterized in that: the device comprises a brake device mounting plate (10), an unlocking guide wheel (1) and a double-way memory alloy wire (2) are arranged on the brake device mounting plate (10), one end of the double-way memory alloy wire (2) is fixed on the brake device mounting plate (10), winds around the surface of the brake device mounting plate (10) for one circle, and is connected with an unlocking wedge block (9) after winding on the unlocking guide wheel (1); the center of the brake device mounting plate (10) is provided with a hole, the rotary shaft (5) passes through the hole, the left side and the right side of the rotary shaft (5) are respectively contacted with the left brake shoe (4) and the right brake shoe (7) through micro-meshing pairs (8), the lower sides of the left brake shoe (4) and the right brake shoe (7) are connected with a brake plate spring (6), and the upper sides of the left brake shoe and the right brake shoe are clamped with an unlocking wedge block (9);
the brake device mounting plate (10) is mounted on the fixed base (11);
the double-way memory alloy wire (2) is fixed on the surface of the mounting plate (10) through the wire drawing guide pair (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611090160.5A CN108131402B (en) | 2016-11-30 | 2016-11-30 | Double-way memory alloy locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611090160.5A CN108131402B (en) | 2016-11-30 | 2016-11-30 | Double-way memory alloy locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108131402A CN108131402A (en) | 2018-06-08 |
| CN108131402B true CN108131402B (en) | 2024-04-12 |
Family
ID=62387958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611090160.5A Active CN108131402B (en) | 2016-11-30 | 2016-11-30 | Double-way memory alloy locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108131402B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3100678A1 (en) * | 1980-01-12 | 1981-12-10 | Akebono Brake Industry Co. Ltd., Tokyo | Automatic clearance compensation device for drum brakes |
| CN1157597A (en) * | 1994-08-17 | 1997-08-20 | 大宇电子株式会社 | Valve utilizing shape memory alloys and anti-lock brake system with valve |
| CN103322088A (en) * | 2013-05-28 | 2013-09-25 | 湖北三江航天万峰科技发展有限公司 | Automatic locking mechanism for tooth-shaped revolving shaft |
| CN105508471A (en) * | 2015-12-01 | 2016-04-20 | 中国科学院长春光学精密机械与物理研究所 | Automatic locking device for rotating shaft |
| CN205273404U (en) * | 2016-01-20 | 2016-06-01 | 吉林大学 | Buffering energy -absorbing formula safety belt preloading device based on shape memory alloy |
| CN205589403U (en) * | 2016-04-18 | 2016-09-21 | 南昌工程学院 | Antitheft lock device |
| CN206338345U (en) * | 2016-11-30 | 2017-07-18 | 北京航天计量测试技术研究所 | A kind of two-way memory alloy locking device |
-
2016
- 2016-11-30 CN CN201611090160.5A patent/CN108131402B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3100678A1 (en) * | 1980-01-12 | 1981-12-10 | Akebono Brake Industry Co. Ltd., Tokyo | Automatic clearance compensation device for drum brakes |
| CN1157597A (en) * | 1994-08-17 | 1997-08-20 | 大宇电子株式会社 | Valve utilizing shape memory alloys and anti-lock brake system with valve |
| CN103322088A (en) * | 2013-05-28 | 2013-09-25 | 湖北三江航天万峰科技发展有限公司 | Automatic locking mechanism for tooth-shaped revolving shaft |
| CN105508471A (en) * | 2015-12-01 | 2016-04-20 | 中国科学院长春光学精密机械与物理研究所 | Automatic locking device for rotating shaft |
| CN205273404U (en) * | 2016-01-20 | 2016-06-01 | 吉林大学 | Buffering energy -absorbing formula safety belt preloading device based on shape memory alloy |
| CN205589403U (en) * | 2016-04-18 | 2016-09-21 | 南昌工程学院 | Antitheft lock device |
| CN206338345U (en) * | 2016-11-30 | 2017-07-18 | 北京航天计量测试技术研究所 | A kind of two-way memory alloy locking device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108131402A (en) | 2018-06-08 |
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