CN103115123B - The locking device of ball screw - Google Patents
The locking device of ball screw Download PDFInfo
- Publication number
- CN103115123B CN103115123B CN201310043393.XA CN201310043393A CN103115123B CN 103115123 B CN103115123 B CN 103115123B CN 201310043393 A CN201310043393 A CN 201310043393A CN 103115123 B CN103115123 B CN 103115123B
- Authority
- CN
- China
- Prior art keywords
- brake disc
- screw
- housing
- ball screw
- pressure spring
- 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.)
- Active
Links
- 230000033001 locomotion Effects 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
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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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H25/2454—Brakes; Rotational locks
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Transmission Devices (AREA)
Abstract
The present invention relates to a kind of locking device of ball screw, comprise housing (7), coil (6), screw (2), brake disc (4), pressure spring (8), coil (6) is arranged on housing (7), the inside of housing (7) is provided with pressure spring (8), housing (7) is also provided with by guide pillar pin (5) can along the brake disc of guide pillar pin movement (4), the described axis of brake disc (4) and the dead in line of ball screw, described pressure spring (8) one end is pressed on housing (7), the other end is pressed on brake disc (4), the end face of the screw (2) of ball screw is provided with friction disk (1), the end face of brake disc (4) is provided with the grinding disk (3) corresponding with the friction disk (1) of the end face of screw (2).The present invention, by under the effect of electromagnetic force and pressure spring, achieves motion and the locking of ball screw, solves the auto-lock function of ball screw, in actual applications, respond well.
Description
Technical field
The present invention relates to a kind of locking device, especially a kind of locking device of ball screw.
Background technique
Aircraft life-saving seat motor drive mechanism for regulating the lifting of chair basin, thus controls the position of Aircraft life-saving seat.The actuator of in traditional motor drive mechanism, Motor torque being changed into straight line motion adopts screw-driven usually, and transmission efficiency is low, volume weight is large, energy consumption is high.According to this situation, devise a kind of structure of ball screw pair that adopts and substitute screw-driven, this structure changes sliding friction during original screw-driven into rolling friction, reduce friction, the power needed is little, transmission efficiency can be improved 3 times, make motor drive mechanism volume, weight and energy consumption significantly reduce simultaneously.But the structure of ball screw pair can not the characteristic of self-locking, can not prevent from rotating at the instantaneous screw of Aircraft life-saving seat fire, be easy to cause a serious accident, thus cannot adapt to requirement when Lifesaving chair launches, cannot ensure pilot's life safety.
Summary of the invention
The object of the invention is the auto-lock function solving ball screw pair, solve and rotate at the instantaneous screw that prevents of Aircraft life-saving seat fire the difficult problem caused a serious accident.
Technical solution of the present invention is, the locking device of ball screw comprises housing, coil, screw, brake disc, pressure spring, coil is arranged on housing, the inside of housing is provided with pressure spring, housing is also provided with by guide pillar pin can along the brake disc of guide pillar pin movement, the axis of described brake disc and the dead in line of ball screw, described pressure spring one end is pressed on housing, the other end pressure on the disc brake rotor, the end face of the screw of ball screw is provided with friction disk, the end face of brake disc is provided with the grinding disk corresponding with the friction disk of the end face of screw.
The present invention, by under the effect of electromagnetic force and pressure spring, achieves motion and the locking of ball screw, solves the auto-lock function of ball screw, in actual applications, respond well.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in the figure, the locking device of ball screw comprises housing 7, coil 6, screw 2, brake disc 4, pressure spring 8, coil 6 is arranged on housing 7, the inside of housing 7 is provided with pressure spring 8, housing 7 is also provided with by guide pillar pin 5 can along the brake disc 4 of guide pillar pin movement, the described axis of brake disc 4 and the dead in line of ball screw, described pressure spring 8 one end is pressed on housing 7, the other end is pressed on brake disc 4, the end face of the screw 2 of ball screw is provided with friction disk 1, the end face of brake disc 4 is provided with the grinding disk 3 corresponding with the friction disk 1 of the end face of screw 2.
In use, coil 6 is connected with motor drive mechanism motor, when after power connection, coil 6 produces magnetic field, and brake disc 4 moves along guide pillar pin 5 under the effect of magnetic force, and now brake disc 4 is separated with screw 2, generator shaft gear drives screw 2 to rotate, and leading screw drives the elevating movement of Lifesaving chair chair basin.When chair basin moves to stroke end position or launches, external power supply will cut off, the magnetic field dissipate of now coil 6 generation, brake disc 4 is under the effect of pressure spring 8, contact with screw 2, friction disk friction produces braking torque makes screw 2 stop the rotation, thus ensure that the object that leading screw locks.
Claims (1)
1. the locking device of a ball screw, it is characterized in that, described device comprises housing (7), coil (6), screw (2), brake disc (4), pressure spring (8), coil (6) is arranged on housing (7) and goes up and connect with motor drive mechanism motor, the inside of housing (7) is provided with pressure spring (8), housing (7) is also provided with by guide pillar pin (5) can along the brake disc of guide pillar pin movement (4), brake disc (4) is mobile along guide pillar pin (5) under the effect of magnetic force, the described axis of brake disc (4) and the dead in line of ball screw, described pressure spring (8) one end is pressed on housing (7), the other end is pressed on brake disc (4), the end face of the screw (2) of ball screw is provided with friction disk (1), the end face of brake disc (4) is provided with the grinding disk (3) corresponding with the friction disk (1) of the end face of screw (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310043393.XA CN103115123B (en) | 2013-02-04 | 2013-02-04 | The locking device of ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310043393.XA CN103115123B (en) | 2013-02-04 | 2013-02-04 | The locking device of ball screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103115123A CN103115123A (en) | 2013-05-22 |
| CN103115123B true CN103115123B (en) | 2015-12-09 |
Family
ID=48413538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310043393.XA Active CN103115123B (en) | 2013-02-04 | 2013-02-04 | The locking device of ball screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103115123B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105150780B (en) * | 2015-08-22 | 2017-12-15 | 北京朗胜峰测控科技有限公司 | The tire uniformity testing system of mechanical lock clamping and positioning device and the application device |
| US11415206B2 (en) * | 2018-01-22 | 2022-08-16 | Linak A/S | Linear actuator |
| CN110388430B (en) * | 2019-07-31 | 2021-07-09 | 东南大学 | Ball screw with self-locking structure |
| CN116067651B (en) * | 2023-03-07 | 2023-06-09 | 四川大学 | Test method of in-situ equivalent test system based on ball friction and motion |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01234105A (en) * | 1988-03-15 | 1989-09-19 | Shinko Electric Co Ltd | Electrically driven chuck driving device |
| JP2659998B2 (en) * | 1988-06-08 | 1997-09-30 | 工業技術院長 | Linear actuator |
| JP2003014017A (en) * | 2001-06-26 | 2003-01-15 | Oriental Motor Co Ltd | Electromagnetic brake mechanism for actuator |
| KR20110066859A (en) * | 2009-12-11 | 2011-06-17 | 산요 덴키 가부시키가이샤 | Linear actuator |
-
2013
- 2013-02-04 CN CN201310043393.XA patent/CN103115123B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103115123A (en) | 2013-05-22 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |