CN107863844A - A kind of multi-stage expansion electric cylinder - Google Patents
A kind of multi-stage expansion electric cylinder Download PDFInfo
- Publication number
- CN107863844A CN107863844A CN201711418513.4A CN201711418513A CN107863844A CN 107863844 A CN107863844 A CN 107863844A CN 201711418513 A CN201711418513 A CN 201711418513A CN 107863844 A CN107863844 A CN 107863844A
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- nut
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- 230000005540 biological transmission Effects 0.000 claims abstract description 79
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 210000003746 feather Anatomy 0.000 claims abstract description 25
- 239000007787 solid Substances 0.000 claims description 4
- 241000251468 Actinopterygii Species 0.000 claims description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000009916 joint effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 208000032369 Primary transmission Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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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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- 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
-
- 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
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
Abstract
The invention provides a kind of multi-stage expansion electric cylinder, it is related to drive technology field, the multi-stage expansion electric cylinder has in the case of radial direction fitted position is less, using the teaching of the invention it is possible to provide the characteristics of larger impulse stroke.A kind of multi-stage expansion electric cylinder includes cylinder barrel and the N level transmission mechanisms being arranged successively；Every grade of transmission mechanism includes：Leading screw, push rod and nut；The body of every grade of nut is socketed on leading screw, and the end of the extension of every grade of nut is fixedly connected with one end of push rod；In addition to N level nuts, the outer surface of the body of remaining every grade nut sets a plurality of outer ring raceway；In addition to first order leading screw, a plurality of annular raceway of remaining every grade leading screw inner surface setting；Electric cylinder also includes：1 grade of ball of N, 1 grade of driving key of N and N level feather keys, every grade of ball are embedded in when between the outer ring raceway of prime nut and the annular raceway of next stage leading screw.The present invention is applied to the making of multi-stage expansion electric cylinder.
Description
Technical field
The present invention relates to drive technology field, more particularly to a kind of multi-stage expansion electric cylinder.
Background technology
Electric cylinder is the equipment for the linear motion that the rotary motion of servomotor is converted into operating mechanism.Electronic cylinder structure
Simply, servo control performance is good, extensive in drive system.
Electric cylinder is divided into single-stage electric cylinder and multi-stage electric cylinder.Single-stage electric cylinder is applied to the small occasion of impulse stroke；It is more
Level electric cylinder is applied to the big occasion of impulse stroke.At present, in multi-stage electric cylinder, axle is used between leading screws at different levels and push rod at different levels
Hold connection transmission.But in the less electric cylinder of radial dimension, bearing is difficult to assemble due to oversized, small so as to limit
The development of size multi-stage electric cylinder.
The content of the invention
Embodiments of the invention provide a kind of multi-stage expansion electric cylinder, and the multi-stage expansion electric cylinder has matches somebody with somebody chi in radially loading
It is very little it is less in the case of, using the teaching of the invention it is possible to provide the characteristics of larger impulse stroke.
To reach above-mentioned purpose, embodiments of the invention adopt the following technical scheme that：
The embodiments of the invention provide a kind of multi-stage expansion electric cylinder, the multi-stage expansion electric cylinder includes：Cylinder barrel, the electric cylinder
Also include：The N level transmission mechanisms being arranged in the cylinder barrel and successively are arranged on, wherein, N >=2, N are natural number；It is described electronic
The series of cylinder is N levels；
Every grade of transmission mechanism includes：Leading screw, push rod and nut；
Every grade of nut includes：If female body and the extension for being arranged on the body end, the extension surround
The opening of the body；The body is socketed on the leading screw；The end of the extension and one end of the push rod are fixed
Connection；
In addition to N level nuts, the outer surface of the body of remaining every grade nut sets a plurality of outer ring raceway；Except first order leading screw
Outside, a plurality of annular raceway of remaining every grade leading screw inner surface setting；
The electric cylinder also includes：N-1 level balls, every grade of ball are embedded in outer ring raceway and next stage silk when prime nut
Between the annular raceway of thick stick；
The electric cylinder also includes：N-1 level driving keys；In addition to N level leading screws, remaining every grade leading screw is respectively provided with driving key, adjacent
Two-stage leading screw is driven by the driving key；
The electric cylinder also includes：N level feather keys, wherein, first order feather key be arranged on first order push rod and the cylinder barrel it
Between, remaining every grade feather key is arranged on when between prime push rod and upper level push rod.
Optionally, 2≤N≤7.
Optionally, in addition to N level nuts, the outer surface of the body of remaining every grade nut is respectively provided with two outer ring raceways.
Optionally, the electric cylinder also includes：It is arranged on the adpting flange or fish ear of N level push rods end.
Optionally, the first order leading screw of the first order transmission mechanism is solid leading screw.
Optionally, the electric cylinder also includes：Servomotor, decelerator and transmission case；
The decelerator is connected with the servomotor and the transmission case respectively；The transmission case and the first order driver
The first order leading screw of structure is connected.
Optionally, the electric cylinder also includes：Control device of wireless, the control device of wireless and the servomotor
It is connected；
The control device of wireless includes：Wireless receiving module, wireless transmitter module and control module；
The wireless transmitter module is used to send control signal to the wireless receiving module；
The wireless receiving module is used to receive and sends first control signal to the control module；
The control module is used to receive first control signal, and sends the second control signal to the servomotor；
The servomotor is used to receive and according to second control signal, realizes the start and stop and rotating of motor.
The embodiment provides a kind of multi-stage expansion electric cylinder, the multi-stage expansion electric cylinder is described including being arranged on
The N level transmission mechanisms being arranged in cylinder barrel and successively, every grade of transmission mechanism include：Leading screw, push rod and nut；The electric cylinder is also
Including N-1 levels driving key, N-1 levels ball and N level feather keys；On the one hand, in every grade of transmission mechanism, nut is connected with push rod
And it is circumferentially spacing by feather key, when leading screw rotates, nut moves along a straight line with push rod；On the other hand, adjacent level driver
In structure, when prime nut and next stage leading screw are connected as one by the inside-and-outside ring raceway of embedded ball, when prime leading screw is done
It can be driven during rotary motion by driving key so that next stage leading screw rotates, and then drives next stage nut and push rod to do straight line
Motion.So, under above-mentioned both sides joint effect, Multi-stage transmission is realized.Above-mentioned multi-stage expansion electric cylinder, using spiral shell
Female, ball and driving key realize the transmission of adjacent two-stage leading screw, while use nut and feather key to realize leading screw rotation to drive
Push rod moves along a straight line, and so as to avoid using larger-size bearing, and the size of nut can determine according to actual requirement, with
Adapt to the less electric cylinder of radial direction fitted position；Meanwhile the electric cylinder has multilevel transmission structure, larger work can be provided
Stroke.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of three-level telescopic electric cylinder provided in an embodiment of the present invention；
Fig. 2 is the structural representation of first order transmission mechanism in Fig. 1.
Wherein, 1. gear box cover；2. gear；3. gear-box；4. bearing；5. first order leading screw；6. first order nut；7. the
Two level leading screw；8. second level nut；9. third level leading screw；10. third level nut；11. first order push rod；12. second level push rod；
13. third level push rod；14. first order driving key；15. first order support ring；16. flange；17. proximity switch；18. the first order is rolled
Pearl；19. the second ball；20. the first plug screw；21. the second plug screw；22. cylinder barrel；23. servomotor；24. decelerator；25. first
Level feather key；61. body；62. extension；63. outer ring raceway.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Embodiment one
The embodiments of the invention provide a kind of multi-stage expansion electric cylinder, the multi-stage expansion electric cylinder includes：Cylinder barrel, electric cylinder also wrap
Include：The N level transmission mechanisms being arranged in cylinder barrel and successively are arranged on, wherein, N >=2, N are natural number；The series of the electric cylinder
For N levels.
Every grade of transmission mechanism includes：Leading screw, push rod and nut.Every grade of nut includes：If female body and setting
The extension in body end is put, extension surrounds the opening of body.Body is socketed on leading screw.The end of extension and push rod
One end be fixedly connected.
In addition to N level nuts, the outer surface of the body of remaining every grade nut sets a plurality of outer ring raceway；Except first order silk
Outside thick stick, a plurality of annular raceway of remaining every grade leading screw inner surface setting.
Above-mentioned electric cylinder also includes：N-1 level balls, every grade of ball are embedded in when the outer ring raceway of prime nut and next
Between the annular raceway of level leading screw.
Above-mentioned electric cylinder also includes：N-1 level driving keys；In addition to N level leading screws, remaining every grade leading screw is respectively provided with driving key,
Adjacent two-stage leading screw is driven by driving key.
Above-mentioned electric cylinder also includes：N level feather keys, wherein, first order feather key be arranged on first order push rod and cylinder barrel it
Between, remaining every grade feather key is arranged on when between prime push rod and upper level push rod.
It should be noted that do not limited for the particular number of N level transmission mechanisms here, example, N=2, now should
Multi-stage expansion electric cylinder is two level telescopic electric cylinder；N=3, now the multi-stage expansion electric cylinder is three-level telescopic electric cylinder；N=4,
Now the multi-stage expansion electric cylinder is level Four telescopic electric cylinder；Certain N can also be other values, will not enumerate here.
Here do not limited for the material of leading screw, push rod and nut.In above-mentioned multi-stage expansion electric cylinder, load is born
It is most weak to bear pulling force, moment of flexure and moment of torsion synergy simultaneously for first order leading screw, first order leading screw.In order to improve the first order
Leading screw load performance, 40Cr materials can be selected to make first order leading screw.
Here do not limited for the end of extension and the connected mode of push rod of nut, such as：Screw can be used
Achieve a fixed connection.The quantity for the outer ring raceway that the outer surface of every grade of nut is set does not limit, can be according to actual conditions
Depending on.Outer ring raceway is identical with the shape of annular raceway, example, can be arc raceway, V-arrangement raceway, rectangle raceway
Deng.
Explanation is needed further exist for, the outer surface of every grade of nut refers to the surface away from its leading screw being arranged, such as：
The outer surface of first order nut refers to the surface away from its first order leading screw being arranged；The inner surface of every grade of leading screw refers to close
The surface of its leading screw being arranged, such as：The inner surface of second level leading screw refers to the table close to its first order leading screw being arranged
Face；Here, in order to more clearly describe, the ring raceway set in the outer surface of nut is referred to as outer ring raceway, will be in silk
The ring raceway of the inner surface setting of thick stick is referred to as annular raceway.
In above-mentioned N levels electric cylinder, the N level transmission mechanisms being arranged successively refer to the leading screw, push rod and spiral shell of N level transmission mechanisms
Mother set is located between the leading screw and push rod in N-1 level transmission mechanisms；Example, the second level leading screw of second level transmission mechanism,
Second level push rod and second level nut are set between the first order leading screw in first order transmission mechanism and first order push rod；3rd
Third level leading screw, third level push rod and the third level nut of level transmission mechanism are set in the second level silk in the transmission mechanism of the second level
Between thick stick and second level push rod, the like, form multistage and be arranged.Certainly, the N level transmission mechanisms being arranged successively may also mean that
Leading screw, push rod and the nut of N-1 level transmission mechanisms are set between the leading screw and push rod in N level transmission mechanisms.The present invention
Embodiment and accompanying drawing define the series of transmission mechanisms at different levels in a manner of the former.
In above-mentioned electric cylinder, every grade of ball is embedded in the annular of the outer ring raceway and next stage leading screw when prime nut
Between raceway, wherein, next stage refers to be ranked up from small to large according to series, bigger than current series 1 series, example,
If when prime nut is second level nut, next stage leading screw is third level leading screw, is now rolled in the outer ring of second level nut
Insertion is second level ball between road and the annular raceway of third level leading screw.
The above-mentioned specific set location for driving key does not limit, example, can be at it in addition to N level leading screws
The end of remaining every grade of leading screw sets driving key.
If the stroke of every grade of transmission mechanism is M, the total kilometres of the multi-stage expansion electric cylinder are：M*N；Example, if should
Multi-stage expansion electric cylinder is three-level telescopic electric cylinder, and the stroke of every grade of transmission mechanism is 500mm, then the three-level telescopic electric cylinder
Total kilometres be：500mm*3=1500mm.
In above-mentioned electric cylinder, first order feather key is arranged between first order push rod and cylinder barrel, and remaining every grade feather key is set
Put when between prime push rod and upper level push rod, wherein, upper level refers to be ranked up from small to large according to series, than current
The series of series small 1, example, if when prime push rod is second level push rod, upper level push rod is first order push rod, now,
The feather key set between first order push rod and second level push rod is second level feather key.
The embodiment provides a kind of multi-stage expansion electric cylinder, the multi-stage expansion electric cylinder is described including being arranged on
The N level transmission mechanisms being arranged in cylinder barrel and successively, every grade of transmission mechanism include：Leading screw, push rod and nut；The electric cylinder is also
Including N-1 levels driving key, N-1 levels ball and N level feather keys；On the one hand, in every grade of transmission mechanism, nut is connected with push rod
And it is circumferentially spacing by feather key, when leading screw rotates, nut moves along a straight line with push rod；On the other hand, adjacent level driver
In structure, when prime nut and next stage leading screw are connected as one by the inside-and-outside ring raceway of embedded ball, when prime leading screw is done
It can be driven during rotary motion by driving key so that next stage leading screw rotates, and then drives next stage nut and push rod to do straight line
Motion.So, under above-mentioned both sides joint effect, Multi-stage transmission is realized.Above-mentioned multi-stage expansion electric cylinder, using spiral shell
Female, ball and driving key realize the transmission of adjacent two-stage leading screw, while use nut and feather key to realize leading screw rotation to drive
Push rod moves along a straight line, and so as to avoid using larger-size bearing, and the size of nut can determine according to actual requirement, with
Adapt to the less electric cylinder of radial direction fitted position；Meanwhile the electric cylinder has multilevel transmission structure, larger work can be provided
Stroke.
Applied in view of above-mentioned multi-stage expansion electric cylinder more size is smaller, in the less occasion of load, optionally, 2≤N
≤ 7, now, the series of above-mentioned multi-stage expansion electric cylinder is 2-7 levels.
Optionally, it is contemplated that reduce size as much as possible and reduce manufacture difficulty, in addition to N level nuts, remaining every grade spiral shell
The outer surface of female body is respectively provided with two outer ring raceways.
Optionally, above-mentioned multi-stage expansion electric cylinder also includes：It is arranged on adpting flange or the fish of N level push rods end
Ear, it is connected with facilitating with other structures, so as to realize that band carries transmission.
In addition to first order leading screw, remaining grade of leading screw is hollow lead screw；First order leading screw can be it is hollow or
Solid；In view of improving load performance, optionally, the first order leading screw of first order transmission mechanism is solid leading screw.
Optionally, above-mentioned multi-stage expansion electric cylinder also includes：Servomotor, decelerator and transmission case；Decelerator respectively with
Servomotor is connected with transmission case；Transmission case is connected with the first order leading screw of first order transmission mechanism.So, in the control of decelerator
Under system, servomotor provide power via transmission case after, drive first order transmission mechanism the first order leading screw rotation, the first order
To drive the motion of first order push rod and other grade of transmission mechanism after leading screw rotation, so as to complete overall transmission.Need what is illustrated
It is that, if servomotor has the function that to adjust moment of torsion, the servomotor of above-mentioned multi-stage expansion electric cylinder can directly and the first order
The first order leading screw of transmission mechanism is connected, without setting decelerator and transmission case.
Optionally, above-mentioned multi-stage expansion electric cylinder also includes：Control device of wireless, control device of wireless and servomotor
It is connected.
Control device of wireless includes：Wireless receiving module, wireless transmitter module and control module.Wireless transmitter module is used for
Control signal is sent to wireless receiving module.Wireless receiving module is used to receive and sends the first control signal to control module.
Control module is used to receive the first control signal, and sends the second control signal to servomotor.Servomotor is used to receive simultaneously
According to the second control signal, the start and stop and rotating of motor are realized.In this manner it is achieved that the nothing for the multi-stage expansion electric cylinder
Line is remotely controlled, and improves the flexibility of operation.
Embodiment two
In order to which multi-stage expansion electric cylinder provided by the present invention is described in more detail, below by taking a kind of three-level telescopic electric cylinder as an example
Illustrate.
With reference to shown in figure 1, the three-level telescopic electric cylinder includes：Cylinder barrel 22, it is arranged on three be arranged in cylinder barrel 22 and successively
Level transmission mechanism, wherein, first order transmission mechanism includes：First order leading screw 5, first order push rod 11 and first order nut 6, second
Level transmission mechanism includes：Second level leading screw 7, second level push rod 12 and second level nut 8, third level transmission mechanism include：3rd
Level leading screw 9, third level push rod 13 and third level nut 10.
Every grade of nut includes：If female body and the extension for being arranged on body end, extension surround body
Opening.Body is socketed on leading screw.The end of extension is fixedly connected with one end of push rod.Here by taking first order nut as an example
Illustrate, with reference to shown in figure 2, first order nut 6 includes：If female body 61 and being arranged on prolonging for the end of body 61
Long portion 62, extension 62 surround the opening of body 61.Body 61 is socketed on first order leading screw 5.The end of extension 62 and the
One end of one-level push rod 11 is fixedly connected.
With reference to shown in figure 1, in addition to third level nut 10, remaining every grade nut（That is first order nut 6 and second level nut 8）
Body outer surface set two outer ring raceways（Fig. 1 is unmarked）.By taking first order nut as an example, with reference to shown in figure 2, first
The outer surface of the body 61 of level nut 6 sets two outer ring raceways 63.With reference to shown in figure 1, in addition to first order leading screw 5, remaining
Every grade of leading screw inner surface setting has two annular raceways（Fig. 1 is unmarked）；Above-mentioned electric cylinder also includes：2 grades of balls, every grade of rolling
Pearl is embedded in when between the outer ring raceway of prime nut and the annular raceway of next stage leading screw；With reference to shown in figure 1, the first order
Ball 18 is embedded in the outer ring raceway of first order nut 6（Fig. 1 is unmarked）With the annular raceway of second level leading screw 7（Fig. 1 is not
Mark）Between；Second ball 19 is embedded in the outer ring raceway of second level nut 8（Fig. 1 is unmarked）In third level leading screw 9
Ring raceway（Fig. 1 is unmarked）Between.It should be noted that do not limited for the embedded mode of ball, can by punching,
Ball is embedded between outer ring raceway and annular raceway from hole.Certainly, after insertion, plug screw can be passed through
（For example, the first plug screw 20 and the second plug screw 21 shown in Fig. 1）Hole is closed.
Above-mentioned electric cylinder also includes：2 grades of driving keys；In addition to 3rd level leading screw, the end of remaining every grade leading screw is respectively provided with transmission
Key, adjacent two-stage leading screw are driven by above-mentioned driving key；With reference to shown in figure 1, first order leading screw 5 and second level leading screw 7 pass through
Primary transmission key 14 is driven；Second level leading screw 7 and third level leading screw 9 pass through second level driving key（Fig. 1 is not shown）Transmission.
Above-mentioned electric cylinder also includes：3 grades of feather keys, wherein, first order feather key 25 is arranged on first order push rod 11 and cylinder
Between cylinder 22, remaining every grade feather key（Fig. 1 is not shown）It is arranged on when between prime push rod and upper level push rod.
With reference to shown in figure 1, the three-level telescopic electric cylinder also includes：Servomotor 23, decelerator 24 and transmission case, decelerator
24 are connected with servomotor 23 and transmission case respectively, and transmission case includes：Gear box cover 1, gear 2 and gear-box 3；First order leading screw
5 are connected with transmission case, so, under the control of decelerator, servomotor provide power via transmission case after, drive the first order
The first order leading screw of transmission mechanism rotates, first order leading screw rotate after to drive the fortune of first order push rod and other grade of transmission mechanism
It is dynamic, so as to complete overall transmission.In order to first order leading screw play support and fixation, above-mentioned three-level telescopic electric cylinder also wrap
Include：Bearing 4 between cylinder barrel 22 and first order leading screw 5.
With reference to shown in figure 1, the three-level telescopic electric cylinder also includes：It is arranged on the adpting flange of the end of third level push rod 13
16, it is connected with facilitating with other structures, so as to realize that band carries transmission.In order to reduce the friction between adjacent two-stage leading screw,
The end of one-level leading screw 5 and second level leading screw 7 is respectively arranged with first order support ring 15 and second level support ring（Fig. 1 is not marked
Note）；In order to reduce the friction between third level leading screw 9 and third level push rod 13, the end of third level leading screw 9 is provided with the 3rd
Level support ring（Fig. 1 is unmarked）.
In order to protect transmission mechanisms at different levels, with reference to shown in figure 1, two proximity switches are additionally provided with the outer surface of cylinder barrel 22
17, when first order transmission mechanism moves to position near proximity switch, i.e. stop motion.
Above-mentioned three-level telescopic electric cylinder also includes：Control device of wireless（Fig. 1 is not shown）, control device of wireless and servo are electric
Machine is connected.Control device of wireless includes：Wireless receiving module, wireless transmitter module and control module.Wireless transmitter module is used for
Control signal is sent to wireless receiving module.Wireless receiving module is used to receive and sends the first control signal to control module.
Control module is used to receive the first control signal, and sends the second control signal to servomotor.Servomotor is used to receive simultaneously
According to the second control signal, the start and stop and rotating of motor are realized.In this manner it is achieved that the nothing for the multi-stage expansion electric cylinder
Line is remotely controlled, and improves the flexibility of operation.
The transmission process of above-mentioned three-level telescopic electric cylinder is specifically described below.
Under the control of decelerator, after power that servomotor provides is via transmission case, first order transmission mechanism is driven
First order leading screw rotates；First order nut is connected with first order push rod, and circumferentially spacing by first order feather key, when
When one-level leading screw rotates, first order nut and first order push rod integrally move along a straight line；Meanwhile first order nut and second level silk
Thick stick is connected as one by the inside-and-outside ring raceway of embedded ball, and first order leading screw rotates can be by first order driving key
Transmission so that second level leading screw rotates, and then drives second level nut and second level push rod to move along a straight line；Second level nut with
Third level leading screw is connected as one by the inside-and-outside ring raceway of embedded ball, and second level leading screw rotates can be by second
Level driving key transmission so that third level leading screw rotates, and then drives third level nut and third level push rod to move along a straight line, i.e., most
Three-level transmission is realized eventually.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (7)
1. a kind of multi-stage expansion electric cylinder, including：Cylinder barrel, it is characterised in that the electric cylinder also includes：It is arranged on the cylinder barrel
N level transmission mechanisms that are interior and being arranged successively, wherein, N >=2, N are natural number；The series of the electric cylinder is n levels, n=N；
Every grade of transmission mechanism includes：Leading screw, push rod and nut；
Every grade of nut includes：If female body and the extension for being arranged on the body end, the extension surround
The opening of the body；The body is socketed on the leading screw；The end of the extension and one end of the push rod are fixed
Connection；
In addition to N level nuts, the outer surface of the body of remaining every grade nut sets a plurality of outer ring raceway；Except first order leading screw
Outside, a plurality of annular raceway of remaining every grade leading screw inner surface setting；
The electric cylinder also includes：N-1 level balls, every grade of ball are embedded in outer ring raceway and next stage silk when prime nut
Between the annular raceway of thick stick；
The electric cylinder also includes：N-1 level driving keys；In addition to N level leading screws, remaining every grade leading screw is respectively provided with driving key, adjacent
Two-stage leading screw is driven by the driving key；
The electric cylinder also includes：N level feather keys, wherein, first order feather key be arranged on first order push rod and the cylinder barrel it
Between, remaining every grade feather key is arranged on when between prime push rod and upper level push rod.
2. a kind of multi-stage expansion electric cylinder according to claim 1, it is characterised in that 2≤N≤7,2≤n≤7.
A kind of 3. multi-stage expansion electric cylinder according to claim 1, it is characterised in that in addition to N level nuts, remaining every grade
The outer surface of the body of nut is respectively provided with two outer ring raceways.
4. a kind of multi-stage expansion electric cylinder according to claim 1, it is characterised in that the electric cylinder also includes：Set
Adpting flange or fish ear n-th grade of push rod end.
A kind of 5. multi-stage expansion electric cylinder according to claim 1, it is characterised in that the of the first order transmission mechanism
One-level leading screw is solid leading screw.
6. a kind of multi-stage expansion electric cylinder according to claim any one of 1-5, it is characterised in that the electric cylinder also wraps
Include：Servomotor, decelerator and transmission case；
The decelerator is connected with the servomotor and the transmission case respectively；The transmission case and the first order driver
The first order leading screw of structure is connected.
7. a kind of multi-stage expansion electric cylinder according to claim 6, it is characterised in that the electric cylinder also includes：Wirelessly
Control device, the control device of wireless are connected with the servomotor；
The control device of wireless includes：Wireless receiving module, wireless transmitter module and control module；
The wireless transmitter module is used to send control signal to the wireless receiving module；
The wireless receiving module is used to receive and sends first control signal to the control module；
The control module is used to receive first control signal, and sends the second control signal to the servomotor；
The servomotor is used to receive and according to second control signal, realizes the start and stop and rotating of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711418513.4A CN107863844A (en) | 2017-12-25 | 2017-12-25 | A kind of multi-stage expansion electric cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711418513.4A CN107863844A (en) | 2017-12-25 | 2017-12-25 | A kind of multi-stage expansion electric cylinder |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450161A (en) * | 2018-12-25 | 2019-03-08 | 西安索睿科技有限公司 | A kind of heavily loaded multi-stage electric cylinder converted between the grade based on Gear Planet Transmission |
| CN109798340A (en) * | 2019-01-29 | 2019-05-24 | 西安微电子技术研究所 | A kind of small size heavy duty multi-stage electric cylinder |
| CN109915567A (en) * | 2019-03-27 | 2019-06-21 | 南京理工大学 | A kind of multistage synchronous lead screw transfer bar mechanism |
| CN110242718A (en) * | 2019-04-29 | 2019-09-17 | 西安华欧精密机械有限责任公司 | A kind of 2 grades of electric jar for bearing ball silk bar |
| CN110240081A (en) * | 2019-04-29 | 2019-09-17 | 西安华欧精密机械有限责任公司 | A kind of 4 grades of electric jar for bearing ball silk bar |
| CN110715035A (en) * | 2019-10-29 | 2020-01-21 | 北京特种机械研究所 | Internal support multi-stage electric cylinder |
| CN111111976A (en) * | 2020-01-16 | 2020-05-08 | 合肥工业大学 | Robot lifting cradle head for surface spraying of large equipment |
| CN111409100A (en) * | 2020-04-16 | 2020-07-14 | 广东博智林机器人有限公司 | Telescopic mechanism, mechanical arm and construction robot |
| CN114017629A (en) * | 2021-10-21 | 2022-02-08 | 西安华欧精密机械有限责任公司 | Lifting mast |
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| CN101106297A (en) * | 2007-08-03 | 2008-01-16 | 浙江大学 | Three level electric jar for bearing ball silk bar |
| CN201190770Y (en) * | 2008-05-01 | 2009-02-04 | 山东博特精工股份有限公司 | Hollow high speed precision ball screw |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109450161A (en) * | 2018-12-25 | 2019-03-08 | 西安索睿科技有限公司 | A kind of heavily loaded multi-stage electric cylinder converted between the grade based on Gear Planet Transmission |
| CN109450161B (en) * | 2018-12-25 | 2024-03-12 | 西安索睿科技有限公司 | Heavy-load multistage electric cylinder based on planetary transmission interstage conversion |
| CN109798340A (en) * | 2019-01-29 | 2019-05-24 | 西安微电子技术研究所 | A kind of small size heavy duty multi-stage electric cylinder |
| CN109915567A (en) * | 2019-03-27 | 2019-06-21 | 南京理工大学 | A kind of multistage synchronous lead screw transfer bar mechanism |
| CN110242718B (en) * | 2019-04-29 | 2023-03-07 | 西安华欧精密机械有限责任公司 | 2-stage ball screw electric cylinder |
| CN110242718A (en) * | 2019-04-29 | 2019-09-17 | 西安华欧精密机械有限责任公司 | A kind of 2 grades of electric jar for bearing ball silk bar |
| CN110240081A (en) * | 2019-04-29 | 2019-09-17 | 西安华欧精密机械有限责任公司 | A kind of 4 grades of electric jar for bearing ball silk bar |
| CN110240081B (en) * | 2019-04-29 | 2021-04-09 | 西安华欧精密机械有限责任公司 | 4-stage ball screw electric cylinder |
| CN110715035A (en) * | 2019-10-29 | 2020-01-21 | 北京特种机械研究所 | Internal support multi-stage electric cylinder |
| CN111111976A (en) * | 2020-01-16 | 2020-05-08 | 合肥工业大学 | Robot lifting cradle head for surface spraying of large equipment |
| CN111409100B (en) * | 2020-04-16 | 2021-09-07 | 广东博智林机器人有限公司 | Telescopic mechanism, mechanical arm and construction robot |
| CN111409100A (en) * | 2020-04-16 | 2020-07-14 | 广东博智林机器人有限公司 | Telescopic mechanism, mechanical arm and construction robot |
| CN114017629A (en) * | 2021-10-21 | 2022-02-08 | 西安华欧精密机械有限责任公司 | Lifting mast |
| CN114017629B (en) * | 2021-10-21 | 2022-06-21 | 西安华欧精密机械有限责任公司 | Lifting mast |
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Application publication date: 20180330 |