CN108895131A - A kind of electric cylinder of adaptive location limit function - Google Patents
A kind of electric cylinder of adaptive location limit function Download PDFInfo
- Publication number
- CN108895131A CN108895131A CN201810867174.6A CN201810867174A CN108895131A CN 108895131 A CN108895131 A CN 108895131A CN 201810867174 A CN201810867174 A CN 201810867174A CN 108895131 A CN108895131 A CN 108895131A
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- Prior art keywords
- limit
- electric cylinder
- ball
- adaptive location
- nut
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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
- F16H25/2015—Means specially adapted for stopping actuators in the end position; Position sensing means
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transmission Devices (AREA)
Abstract
A kind of electric cylinder of adaptive location limit function of the present invention, motor is connect by retarder with ball screw assembly, realize the transmitting of entire mechanism power and speed, simultaneously, adaptive location limit is installed additional in ball-screw nut left and right ends touches mechanism, limited block is installed additional in ball-screw rear and front end, mechanism action is touched with adaptive location limit by limited block, the forward and backward position for completing electric cylinder adaptively limits.The present invention uses adaptive location position-limit mechanism; realize effective combination with the soft stop of electric cylinder and hard stop; pass through multiple protective; greatly improve the safety and reliability of electric cylinder; in the case where soft stop and hard stop fail simultaneously, adaptive location position-limit mechanism can completely effectively protect electric cylinder not damaged.
Description
Technical field
The present invention relates to electric cylinder technical fields, especially to the higher electric cylinder of security requirement.
Background technique
Electric cylinder is a kind of electromechanical integration equipment for converting electrical energy into mechanical energy.Electric cylinder working principle is：It is upper
Machine sends instructions to servo-driver, and servo-driver is operated according to order-driven servo motor, then passes through transmission shaft and subtracts
Fast device drives the rotation of trapezoidal screw pair；Feed screw nut radially limit, under the driving of lead screw turning moment with electric cylinder push rod one
It rises and does linear reciprocating motion；Generally, the stroke limit of electric cylinder is mainly controlled by soft stop and hard stop, and soft stop is adopted
It with the mode of acquisition position information, is realized with software, hard stop uses limit switch（Incude limit switch or mechanical position limitation
Switch）It realizes, but two ways has a possibility that failure, once failure, can damage electric cylinder.
Currently, being got over as electric cylinder is in the application of various electromechanical equipments to the safety of electric cylinder, reliability requirement
Come it is higher, but existing electric cylinder substantially all use stroke stop of the limit switch as electric cylinder, or increase feather key switching machine
Structure realizes limit function.Using limit switch there are limit switch fail the shortcomings that, particularly with the electric cylinder of high-speed cruising,
In the case where limit switch failure, irreversible damage is caused to electric cylinder；The mode for increasing feather key switching mechanism, passes through
Built-in reset spring and feather key realize the conversion of the relative motion mode of nut and lead screw assembly, reach position limitation protection function,
But it is more demanding to the processing technology of reset spring since the switching of feather key is realized by two reset springs.
Currently, there are two main classes for the domestic electric cylinder with limit function：One kind is using built-in limit switch as electronic
The stroke stop of cylinder, for electric cylinder when doing linear reciprocating motion, the extreme position in rear and front end incudes or touches limit switch,
Enable electric cylinder in extreme position stop motion, play a protective role, is invented by Kai Le New Energy Technology Co., Ltd.（Patent
Title：A kind of electronic push rod machine of built-in limit switch；The number of applying for a patent：201310294925.7；Authorization Notice No.：CN
103401351 A）, such electric cylinder realizes the limit function of electric cylinder using limit switch, and major defect is：It is opened in limit
In the case where closing failure, irreversible damage is caused to electric cylinder.It is another kind of to use feather key switching mechanism, realize electric cylinder
Limit, is invented by NeiMenggu BaoGang GangLian Co., Ltd（Patent name：A kind of limit electric pushrod certainly；The number of applying for a patent：
201520930205.X；Authorization Notice No.：CN 205105035 U）, such electric cylinder is real by the kind of drive of screw-nut
The transmission of existing power and movement realizes the control of stroke by designing the lead screw of different length, by built in screw block
Two reset springs realize that conjunction is opened in the screw thread auxiliary driving of both forward and reverse directions, realize the limit of electric cylinder, major defect is：It is right
The processing technology of reset spring is more demanding, when design requirement is not achieved in reset spring elastic force, can reduce reliability.
The above two classes electric cylinder haves the shortcomings that reliability is lower.
Summary of the invention
The purpose of invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of with the electronic of adaptive location limit function
Cylinder has that security risk, the present invention use adaptive bit which solve existing electric cylinder safety, reliability are lower
Position-limit mechanism is set, realizes that effective combination with the soft stop of electric cylinder and hard stop is greatly improved electronic by multiple protective
The safety and reliability of cylinder, in the case where soft stop and hard stop fail simultaneously, adaptive location position-limit mechanism can be complete
It is not damaged to be effectively protected electric cylinder entirely.
Technical solution
What the present invention was mainly achieved through the following technical solutions：
Motor is connect by retarder with ball screw assembly, realizes the transmitting of entire mechanism power and speed, meanwhile, in ball wire
Thick stick nut left and right ends install adaptive location limit additional and touch mechanism, install limited block additional in ball-screw rear and front end, pass through limit
Position block touches mechanism action with adaptive location limit, and the forward and backward position for completing electric cylinder adaptively limits.Electric cylinder installs additional certainly
Adapt to position position-limit mechanism working principle be：Motor high speed rotation is converted into low speed, large torque transmitting then through retarder
Movement, by the positive and negative rotation rotary motion of ball-screw, realizes the linear reciprocating motion of nut, passes through adaptive location position restrainer
The adaptive limit function in forward and backward position of structure completion electric cylinder.The working principle of adaptive location position-limit mechanism is：Ball-screw
Nut left and right ends install adaptive location limit additional and touch mechanism, install limited block additional in ball-screw rear and front end, lead screw carries out
When positive and negative rotation rotary motion, nut correspondingly carries out linear reciprocating motion, meanwhile, drive adaptive location limit to touch mechanism same
Step movement, when nut runs to lead screw front end, adaptive location limit, which is touched, in-house to be allocated to ring and is mounted on lead screw
On front limited block touch, be allocated to ring and rotate, stir nut interior ball and retainer and relative displacement occurs, at this point, rolling
Pearl and lead screw are maintained at contactless state, and when lead screw continues rotation, nut is remain stationary, and realizes the adaptive front-end of electric cylinder
Limit；Similarly, when nut runs to lead screw rear end, adaptive location limit, which is touched, in-house to be allocated to ring and is mounted on silk
Rear limited block on thick stick touches, and is allocated to ring and rotates, and stirs nut interior ball and relative displacement occurs for retainer, at this point,
Ball and lead screw are maintained at contactless state, and when lead screw continues rotation, nut is remain stationary, realize electric cylinder it is adaptive after
End limit.
Beneficial effect
The beneficial effects of the invention are as follows：
（1）Using adaptive location position-limit mechanism, so that electric cylinder safety, reliability are greatly improved, and do not use
The electric cylinder of the mechanism compares, and failure rate is substantially reduced, and ensure that equipment operates normally for a long time；
（2）Using adaptive location position-limit mechanism so that the maintenance cost of electric cylinder is greatly reduced, with do not use this
The electric cylinder of mechanism compares, and electric cylinder manufacturing cost reduces about 20%.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is schematic diagram of the present invention in electric cylinder application.
In figure, 1- ball, 2- retainer, 3- nut, 4- lead screw is allocated to ring before 5-, is allocated to ring after 6-, 7- front limited block,
Limited block after 8-.
Fig. 2 is schematic diagram of application structure of the present invention in electric cylinder；
In figure, 1- motor, 2- retarder, the front end 3- adaptive location position-limit mechanism, the rear end 4- adaptive location position-limit mechanism, 5-
Ball screw assembly, 6- shell.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.
A kind of adaptive location position-limit mechanism, please refers to shown in attached drawing 1, including ball 1, retainer 2, nut 3, lead screw 4,
Before be allocated to ring 5, after be allocated to ring 6, front limited block 7, rear limited block 8, lead screw 4 is the support of entire mechanism, while ball 1 is in nut
By 2 circulating rolling of retainer in the 3 sliding slot guide rails formed with lead screw 4, nut is converted by the torque of lead screw and rotary motion
Push-pull effort and straight reciprocating motion, that is, the movement conversion of nut 3 and lead screw 4 is connect by the two and the close of ball 1
What touching was completed.When lead screw 4 carries out clockwise rotation, nut 3 moves along a straight line to correspondingly preceding extreme direction, meanwhile,
Adaptive location limit is driven to touch mechanism（Including retainer 2, it is preceding be allocated to ring 5, after be allocated to ring 6）It moves synchronously, when nut 3 is transported
When row is to lead screw front end, adaptive location limit touch it is in-house before be allocated to ring 5 and the front limited block 7 that is mounted on lead screw
It touches, the preceding ring 5 that is allocated to rotates, and stirs nut interior ball 1 and relative displacement occurs for retainer 2, at this point, ball 1 and silk
Thick stick 4 is maintained at contactless state, and when lead screw 4 continues rotation, nut 3 is remain stationary, and realizes the adaptive front-end limit of electric cylinder
Position；Similarly, when nut 3 runs to lead screw rear end, adaptive location limit touch it is in-house after be allocated to ring 6 and be mounted on
Rear limited block 8 on lead screw 4 touches, after be allocated to ring 6 and rotate, stir 3 inside ball 1 of nut and occur relatively with retainer 2
Displacement, at this point, ball 1 and lead screw 4 are maintained at contactless state, when lead screw 4 continues rotation, nut 3 is remain stationary, and realizes electricity
The adaptive rear end limit of dynamic cylinder.
Application mode of the adaptive location position-limit mechanism in electric cylinder, please refers to attached drawing 2, including motor 1, retarder 2,
Front end adaptive location position-limit mechanism 3, rear end adaptive location position-limit mechanism 4, ball screw assembly, 5, shell 6.Motor 1 is by subtracting
Fast device 2 and corresponding transmission chain are connect with ball screw assembly, 5, realize the transmitting of entire mechanism power and speed.When 1 high speed of motor
Then rotation is converted into low speed, large torque passing movement through retarder 2 and corresponding transmission chain, is connected by ball screw assembly, 4
Transmitting, conversion positive and negative rotation campaign are straight reciprocating motion, when the nut in ball screw assembly, 5 is run to front and back ends, are stopped soft
Shelves, hard stop all in the case where failure, adapt to the position that position position-limit mechanism realizes electric cylinder by its own working principle
Limit function.Application of the adaptive location position-limit mechanism in the electric cylinder using ball screw assembly, can greatly improve electricity
The reliability of dynamic cylinder, safety, reduce hazard rate, save maintenance and customer using cost.It also can use the skill simultaneously
Art advantage realizes Rapid Popularization and the application of such product.
A specific embodiment of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.
Claims (1)
1. a kind of electric cylinder of adaptive location limit function, it is characterised in that：Motor is connected by retarder and ball screw assembly,
It connects, realizes the transmitting of entire mechanism power and speed, meanwhile, adaptive location limit is installed additional in ball-screw nut left and right ends
Mechanism is touched, installs limited block additional in ball-screw rear and front end, mechanism action is touched with adaptive location limit by limited block,
The forward and backward position for completing electric cylinder adaptively limits；Electric cylinder install additional adaptive location position-limit mechanism working principle be：Motor
High speed rotation is converted into low speed, large torque passing movement then through retarder, by the positive and negative rotation rotary motion of ball-screw,
The linear reciprocating motion for realizing nut is adaptively limited by the forward and backward position that adaptive location position-limit mechanism completes electric cylinder
Function；The working principle of adaptive location position-limit mechanism is：Ball-screw nut left and right ends install adaptive location limit additional and touch
It has a sudden inspiration structure, when ball-screw rear and front end installs limited block additional, and lead screw carries out positive and negative rotation rotary motion, nut correspondingly carries out past
Linear motion, meanwhile, it drives adaptive location limit to touch mechanism and moves synchronously, when nut runs to lead screw front end, from
Adapt to position limit touch it is in-house be allocated to ring and touched with the front limited block being mounted on lead screw, be allocated to ring and rotate,
Stir nut interior ball and retainer and relative displacement occur, at this point, ball and lead screw are maintained at contactless state, when lead screw after
When continuous rotation, nut is remain stationary, and realizes the adaptive front-end limit of electric cylinder；Similarly, when nut runs to lead screw rear end,
Adaptive location limit touch it is in-house be allocated to ring and touched with the rear limited block being mounted on lead screw, be allocated to ring and revolve
Turn, stirs nut interior ball and relative displacement occurs for retainer, at this point, ball and lead screw are maintained at contactless state, work as silk
When thick stick continues rotation, nut is remain stationary, and realizes the adaptive rear end limit of electric cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810867174.6A CN108895131A (en) | 2018-08-02 | 2018-08-02 | A kind of electric cylinder of adaptive location limit function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810867174.6A CN108895131A (en) | 2018-08-02 | 2018-08-02 | A kind of electric cylinder of adaptive location limit function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108895131A true CN108895131A (en) | 2018-11-27 |
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ID=64352876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810867174.6A Pending CN108895131A (en) | 2018-08-02 | 2018-08-02 | A kind of electric cylinder of adaptive location limit function |
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| Country | Link |
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| CN (1) | CN108895131A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196921A (en) * | 2019-07-07 | 2021-01-08 | 瀚德刹车片产品公司 | Brake actuating mechanism and disc brake and manufacturing method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2446393A (en) * | 1945-06-14 | 1948-08-03 | Eaton Mfg Co | Screw-threaded mechanical movement |
| CN102906457A (en) * | 2010-03-17 | 2013-01-30 | 日本精工株式会社 | Ball screw, manufacturing method of nut for ball screw |
| CN103291870A (en) * | 2013-06-04 | 2013-09-11 | 西北工业大学 | Planetary roller screw pair actuating cylinder capable of self locking |
| CN203272658U (en) * | 2012-03-22 | 2013-11-06 | 汉宁电气工厂有限责任两合公司 | Safety device for adjustment transmission mechanism |
| CN203377730U (en) * | 2013-08-06 | 2014-01-01 | 中国航天科技集团公司第九研究院第七七一研究所 | Electric cylinder possessing self-locking characteristic |
| CN104052188A (en) * | 2014-07-02 | 2014-09-17 | 上海翱锐控制***有限公司 | Precise electric cylinder |
| CN207261598U (en) * | 2017-09-28 | 2018-04-20 | 苏州优力克流体控制科技有限公司 | Low torque ball-screw with stopper |
-
2018
- 2018-08-02 CN CN201810867174.6A patent/CN108895131A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2446393A (en) * | 1945-06-14 | 1948-08-03 | Eaton Mfg Co | Screw-threaded mechanical movement |
| CN102906457A (en) * | 2010-03-17 | 2013-01-30 | 日本精工株式会社 | Ball screw, manufacturing method of nut for ball screw |
| CN203272658U (en) * | 2012-03-22 | 2013-11-06 | 汉宁电气工厂有限责任两合公司 | Safety device for adjustment transmission mechanism |
| CN103291870A (en) * | 2013-06-04 | 2013-09-11 | 西北工业大学 | Planetary roller screw pair actuating cylinder capable of self locking |
| CN203377730U (en) * | 2013-08-06 | 2014-01-01 | 中国航天科技集团公司第九研究院第七七一研究所 | Electric cylinder possessing self-locking characteristic |
| CN104052188A (en) * | 2014-07-02 | 2014-09-17 | 上海翱锐控制***有限公司 | Precise electric cylinder |
| CN207261598U (en) * | 2017-09-28 | 2018-04-20 | 苏州优力克流体控制科技有限公司 | Low torque ball-screw with stopper |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196921A (en) * | 2019-07-07 | 2021-01-08 | 瀚德刹车片产品公司 | Brake actuating mechanism and disc brake and manufacturing method |
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Application publication date: 20181127 |