CN107707070A - A kind of servo electric jar of oil-free grease lubrication - Google Patents
A kind of servo electric jar of oil-free grease lubrication Download PDFInfo
- Publication number
- CN107707070A CN107707070A CN201710929278.0A CN201710929278A CN107707070A CN 107707070 A CN107707070 A CN 107707070A CN 201710929278 A CN201710929278 A CN 201710929278A CN 107707070 A CN107707070 A CN 107707070A
- Authority
- CN
- China
- Prior art keywords
- push rod
- leading screw
- servo electric
- electric jar
- oil
- 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.)
- Pending
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Classifications
-
- 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
-
- 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
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
Abstract
The present invention relates to a kind of servo electric jar of oil-free grease lubrication, wherein servomotor (1) drives leading screw (4) to rotate by power train (2) to determine speed reducing ratio transmission power, by the bearings in bearings (5), right-hand member stretches into push rod housing (9) left end of leading screw (4)；Nut (7) is socketed on leading screw (4), the left end of push rod housing (9) is fixed by push rod flange (8) and nut (7) and in cylinder barrel (3), and the right-hand member of push rod housing (9) passes cylinder barrel Supporting cover (10)；Leading screw support set (6) is fixed in the right-hand member of leading screw (4)；Fit tolerance between cylindrical and push rod housing (9) inwall of the leading screw support set (6) is designed as gap cooperation.The present invention can reduce the chance using grease lubrication, to meet that servo electric jar uses in without grease particular surroundings.
Description
Technical field
The present invention relates to electric cylinder, more particularly to a kind of servo electric jar of oil-free grease lubrication.
Background technology
With the rapid development and progress of modern industry and equipment manufacture, in pushing away for digital technology and microprocessing etc.
Move with the influence of, people perform the performance and functional requirement more and more higher of terminal to driving process control equipment.Conventional hydraulic, gas
Dynamic executing agency is due to its position poor controllability, inconvenient maintenance, system architecture is complicated, sensitivity is poor, environmental sensibility is high, and meeting
The features such as causing larger leakage and noise pollution, the needs of current industrial development have been difficult in adapt to it.And with electronic technology
High speed development, gradually it is resolved the problems such as the speed regulating control and power density that restrict driven by power, electric driveizations is also as ought
The new main trend of preceding driving technical field.Servo electric jar (hereinafter referred to as electric cylinder) as one of straight distance power-driven actuating
It is the dynamic foundation part progressively to grow up with the development of modern industry, it is integrated high-performance linear actuator,
It can be linear motion by the convert rotational motion of motor, the accurate control of power, position and speed can be realized.
Power of the existing servo electric jar using servomotor as device, by decelerator and timing belt, drive leading screw
Leading screw rotation in nut part, forces push-rod assembly to realize linear motion.For example, patent 20141003597.5 discloses one
Kind servo electric jar, the servo electric jar include cylinder body, leading screw, nut, and the both ends of the cylinder body are openend and blind end, are opened
Mouth is provided with front support lid at end, and rear end cap is provided with blind end, and the center section of cylinder body is hollow structure, and leading screw is arranged on cylinder
Within body, nut is arranged on leading screw, and linear reciprocating motion can be done along the axis of leading screw, and nut connects with power pipe screw thread
Connect, leading screw is connected by leading screw adapter sleeve with torque-transmitting coupling, and torque-transmitting coupling is connected with armature spindle, armature spindle with
Rotor is fixedly connected, and stator is fixed with cylinder body, armature spindle is by fore bearing and rear bearings.
During actual production and use, to ensure that the above-mentioned each parts of servo electric jar flexibly operate, generally need
Oil must be used in guiding parts when the transmission parts such as fore bearing, rear bearing, servomotor and nut do linear running
Fat is lubricated.However, in some particular surroundings, such as there is the very big space ring of high vacuum, low gravitation, radiation, temperature extreme difference
Border, hot environment, grease lubrication can not realize the effect of its anticipation.Because under vacuum environment, used on usual ground
Lubricating oil can evaporate, cause insufficient lubrication；Huge radiation present in environment, the old of lubricating oil and organic substance can be accelerated
Change, be rotten.What is more, in some food processings and medicine equipment, due to the high request of security and production environment, oil
Grease lubrication mode is also that avoid as far as possible.Therefore there is an urgent need to study the machine for reducing servo generation and moving cylinder and using grease lubrication
Meeting, to meet that servo electric jar uses in without grease particular surroundings.
The content of the invention
The purpose of the present invention is the problem of presence for prior art, there is provided a kind of servo electric jar of oil-free grease lubrication,
It can reduce the chance using grease lubrication, to meet that servo electric jar uses in without grease particular surroundings.
The purpose of the present invention is achieved through the following technical solutions：
The present invention provides a kind of servo electric jar of oil-free grease lubrication, and it includes：Servomotor, power train, cylinder barrel, silk
Thick stick, bearings, nut, push rod flange, push rod housing and cylinder barrel Supporting cover；Servomotor is passed by power train with determining speed reducing ratio
Defeated power drives leading screw to rotate, and the left end of leading screw is stretched into push rod housing by the bearings in bearings, right-hand member；
Nut is socketed on leading screw, and the left end of push rod housing is fixed and is located in cylinder barrel by push rod flange and nut, push rod housing
Right-hand member passes cylinder barrel Supporting cover；The servo electric jar of the oil-free grease lubrication also includes：Leading screw support set；The leading screw support set
It is fixed on the right-hand member of leading screw；The cylindrical fit tolerance between push rod housing inwall of the leading screw support set is designed as gap and matched somebody with somebody
Close.
It is highly preferred that the leading screw support set external application or be coated with kollag or comprising the solid moisten
The composite of lubrication prescription.
It is highly preferred that the servo electric jar of the oil-free grease lubrication also includes：Push rod housing support ring；The push rod housing
Support ring is installed in cylinder barrel Supporting cover, and between push rod housing and cylinder barrel Supporting cover.
It is highly preferred that the push rod housing support ring uses the push rod housing support ring being made up of phenolic resin.
It is highly preferred that the servo electric jar of the oil-free grease lubrication also includes：Nut support ring；The nut support ring peace
In the groove of the push rod flange, support is provided for nut；The external diameter of the nut support ring is more than the external diameter of nut.
It is highly preferred that the nut support ring uses the nut support ring being made up of phenolic resin.
It is highly preferred that the servo electric jar of the oil-free grease lubrication also includes：
Cushion pad and preceding cushion pad afterwards；
The left side of cushion pad is free after described and is close to nut towards bearings, right side；
The right side of the preceding cushion pad is connected by screw the left surface in cylinder barrel Supporting cover, left side freedom and direction
The push rod flange.
It is highly preferred that solid lubricant layer is applied or is coated with the leading screw and power train；The solid lubricant layer is using solid
Body lubricant or the composite for including the kollag.
It is highly preferred that the bearing in the bearings is self-lubricating bearing.
It is highly preferred that the servo electric jar of the oil-free grease lubrication also includes：Push rod joint and pass through the push rod joint
It is connected to the earrings of the push rod housing right-hand member.
The present invention has the following technical effect that it can be seen from the technical scheme of the invention described above：
The present invention is placed in push rod housing by the leading screw support set installed in leading screw end, can reduce leading screw with pushing away
Friction between rod sleeve, so as to reduce the chance for using grease lubrication；And sprayed on leading screw support set friction pair/
Sintering solid lubricant, the requirement of the particular surroundings such as oil-free grease lubrication is met, expanded servo electric jar in particular field
Conventional lubrication mode can not meet the servo electric jar product of requirement in the application of scape, especially space and hot environment；
By the nut support ring of setting, support can not only be provided for nut, and be also prevented from nut and cylinder barrel
Between direct friction, so as to further reduce the chance using grease lubrication；
By push rod housing support ring, not only play a part of support guide to push rod housing, and can anti-throw-out lever
Directly contacting between sleeve and cylinder barrel Supporting cover, prevents Frictional Slipping between the two, so as to further reduce use
The chance of grease lubrication；
By applying or being coated with kollag on leading screw and power train, making for power train grease particular surroundings is avoided
With；
Traditional roller/ball bearing is replaced using self-lubricating bearing, avoids use of the bearing in grease particular surroundings.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the servo electric jar of oil-free grease lubrication in the present invention；
Fig. 2 is the structural representation of the leading screw support set in the present invention；
In figure：
Servomotor 1, power train 2, cylinder barrel 3, leading screw 4, bearings 5, leading screw support set 6, nut 7, push rod flange 8,
It is push rod housing 9, cylinder barrel Supporting cover 10, nut support ring 11, push rod housing support ring 13, push rod joint 14, rear cushion pad 15, preceding
Cushion pad 16, earrings 17.
Embodiment
Technical scheme is described in further details below with reference to accompanying drawing.
Embodiment one
The embodiment of the present invention one provides a kind of servo electric jar of oil-free grease lubrication, its structure as shown in figure 1, including：
Servomotor 1, power train 2, cylinder barrel 3, leading screw 4, bearings 5, leading screw support set 6, nut 7, push rod flange 8,
It is push rod housing 9, cylinder barrel Supporting cover 10, nut support ring 11, push rod housing support ring 13, push rod joint 14, rear cushion pad 15, preceding
Cushion pad 16 and earrings 17.
Installation relation between all parts is as follows：
Servomotor 1 transmits power by power train 2 to determine speed reducing ratio.The output shaft of power train 2 and the left end shaft of leading screw 4
Coordinate installation, and transmit power to leading screw 4 to drive leading screw 4 to rotate.The left end of cylinder barrel 3 is fixed in bearings 5,
Right-hand member is fixed in cylinder barrel Supporting cover 10.For the left end of leading screw 4 by the bearings in bearings 5, right-hand member is provided with leading screw branch
Support set 6, and stretch into push rod housing 9.Nut 7 is socketed on leading screw 4, and nut support ring 11 is arranged on the outside of push rod flange 8
In groove；The left end of push rod housing 9 is fixed by push rod flange 8 and nut 7 and in cylinder barrel 3, the right-hand member of push rod housing 9 is worn
Go out cylinder barrel Supporting cover 10, and be connected by push rod joint 14 with the earrings 17 on right side.The leading screw 4 being socketed in nut 7, in motor
Driving under rotate, when there is external load effect, nut 7 is limited by push rod housing 9 and rotated, and then by leading screw 4
Convert rotational motion be nut 7 linear motion.In order to avoid the friction between push rod housing 9 and cylinder barrel Supporting cover 10,
Push rod housing support ring 13 is set between push rod housing 9 and cylinder barrel Supporting cover 10.
In the motion process of Serve Motor Control feed screw nut, cause nut 7 and push rod to prevent control from failing
Sleeve 9 produces larger shock loading, there is provided rear cushion pad 15 and preceding cushion pad 16, to play a part of mechanical damping.Its
In after cushion pad 15 left side freely and towards bearings 5, right side is close to nut 7；The right side of preceding cushion pad 16 leads to
Cross left surface of the mode connects for screw in cylinder barrel Supporting cover 10, left side is freely and towards push rod flange 8.
The earrings 17 in left side is connected by screw the outside with power train 2.Earrings 17 on the left of this is watching in the application
Electric cylinder main fixed structure in use is taken, external force support is provided for structure.
The structure of above-mentioned leading screw support set 6 as shown in Fig. 2 be radially arranged at least two mounting holes on leading screw support set 6,
And the end of leading screw 4 is fixed on by the mounting hole and screw.The maximum outside diameter of leading screw support set 6 is more than the external diameter of leading screw 4
And less than the internal diameter of push rod housing 9, can be by between the inwall of cylindrical and push rod housing 9 of the leading screw support set 6 during specific design
Fit tolerance be designed as gap cooperation.So design, even if leading screw support set 6 receives the effect of power on external diameter direction,
It is also ensured that leading screw support set 6 will not rotate with leading screw 4, and it is only to have axial relative fortune with the inwall of push rod housing
It is dynamic, therefore the abrasion that can be significantly reduced between leading screw 4 and the inwall of push rod housing 9.It can be seen that above-mentioned leading screw support set 6 is at this
In play two effects：First, play sliding support effect：By the leading screw support set 6 installed in the end of leading screw 4, can ensure
Leading screw 4 is not subject to excessive additional bending moment, and during so as to ensure that leading screw 4 rotates, push rod housing 9 moves along a straight line with respect to leading screw 4, i.e.,
The inner circle of push rod housing 9 does linear slide with respect to leading screw 4.Second, reduce the friction between leading screw 4 and push rod housing 9：Due to silk
Thick stick 4 rotates, and is in linear motion state during the work of push rod housing 9, passes through the leading screw support set 6 and push rod housing 9
Between have relative motion, the friction between whole leading screw 4 and push rod housing 9 can be avoided, so as to reduce friction area.
In order to further make the leading screw support set 6 there is preferable anti-attrition to act on, in the external application of leading screw support set 6 or
It is coated with solid lubrication or the composite comprising the kollag.The solid lubricant layer can replace grease lubrication.
Above-mentioned nut support ring 11 is arranged on push rod flange 8, specific in the groove of push rod flange 8, predominantly
Nut 7 provides support.The external diameter of nut support ring 11 is slightly larger than the external diameter of nut 7, can avoid the direct of nut 7 and cylinder barrel 3
Contact, so as to prevent the direct friction between nut 7 and cylinder barrel 3, plays a protective role.The material of the nut support ring 11
Phenolic resin can be used.
With the linear motion of push rod housing 9, relative motion is produced between the meeting of push rod housing 9 and cylinder barrel Supporting cover 10.For
The friction between push rod housing 9 and cylinder barrel Supporting cover 10 is reduced, is provided between push rod housing 9 and the cylinder barrel Supporting cover 10 and pushes away
Rod sleeve support ring 13.The push rod housing support ring 13 is installed in cylinder barrel Supporting cover 10, mainly plays support to push rod housing 9
The effect of guiding.The external diameter of the push rod housing support ring 13 is slightly less than the internal diameter of cylinder barrel Supporting cover 10, therefore can avoid push rod
Direct contact between sleeve 9 and cylinder barrel Supporting cover 10, prevents Frictional Slipping between the two.The push rod housing support ring 13
Material uses phenolic resin.
The both ends of above-mentioned cylinder barrel 3 are fixed in the bearings 5 in left side by welding or bolted form respectively
In the cylinder barrel Supporting cover 10 on bearing spider and right side.Cylinder barrel 3 is not subject to pulling force and thrust in running, is wrapped in cylinder barrel 3
The whole effort formation of electric cylinder is contained, can be that leading screw 4 provides support, strengthen the rigidity of cylinder and prevent external dust
Pollute lead screw pair and bearing.
In order to ensure good frictional behavior, apply or be coated with above-mentioned leading screw 4 and power train 2 kollag or comprising
The composite of the kollag.
Above-mentioned conventional kollag has graphite, molybdenum disulfide and polytetrafluoroethylene (PTFE) etc..Graphite therein, MoS2 tools
There is the material of layer structure, shear strength is low, is easily adhered in substrate surface；Tetrafluoroethene has low coefficient of friction, easily
Transfer membrane is formed on friction pair surface, so as to play anti-friction wear-resistant effect.In addition to above-mentioned kollag is used alone, also
Kollag and other materials can be combined into composite to use.
For the above-mentioned bearing set in bearings 5, in order to ensure the support of bearing and position-limiting action, bearings
The bearing set in 5 uses self-lubricating bearing.Traditional roller/ball bearing is replaced using self-lubricating bearing, can effectively be reduced
The use chance of lubricating grease.
Be in above-described embodiment one with and meanwhile leading screw support set 6, nut support ring 11 and push rod housing support ring 13 be set
Exemplified by illustrate, still, the invention is not limited in this, and one or any two in three parts is included in the present invention
It is individual, the chance using grease lubrication can be reduced, therefore these change all without departing from protection scope of the present invention.
Although the present invention is disclosed as above with preferred embodiment, embodiment does not limit the present invention.This hair is not being departed from
Any equivalence changes done in bright spirit and scope or retouching, also belong to the protection domain of the present invention.Therefore the present invention
Protection domain should be using the content that claims hereof is defined as standard.
Claims (10)
1. a kind of servo electric jar of oil-free grease lubrication, including：Servomotor (1), power train (2), cylinder barrel (3), leading screw (4),
Bearings (5), nut (7), push rod flange (8), push rod housing (9) and cylinder barrel Supporting cover (10)；Servomotor (1) passes through biography
Dynamic system (2) drives leading screw (4) to rotate to determine speed reducing ratio transmission power, and the left end of leading screw (4) is by bearings (5)
Bearings, right-hand member are stretched into push rod housing (9)；Nut (7) is socketed on leading screw (4), and the left end of push rod housing (9) is by pushing away
Bar flange (8) is fixed with nut (7) and in cylinder barrel (3), and the right-hand member of push rod housing (9) passes cylinder barrel Supporting cover (10)；Its
It is characterised by, the servo electric jar of the oil-free grease lubrication also includes：
Leading screw support set (6)；
The leading screw support set (6) is fixed on the right-hand member of leading screw (4)；The cylindrical and push rod housing (9) of the leading screw support set (6)
Fit tolerance between inwall is designed as gap cooperation.
2. the servo electric jar of a kind of oil-free grease lubrication according to claim 1, it is characterised in that supported in the leading screw
Cover the external application of (6) or be coated with kollag or include the composite of the kollag.
A kind of 3. servo electric jar of oil-free grease lubrication according to claim 1, it is characterised in that the oil-free grease lubrication
Servo electric jar also include：
Push rod housing support ring (13)；
The push rod housing support ring (13) is installed in cylinder barrel Supporting cover (10), and is supported positioned at push rod housing (9) and cylinder barrel
Cover between (10).
A kind of 4. servo electric jar of oil-free grease lubrication according to claim 3, it is characterised in that the push rod housing branch
Pushing out ring (13) is using the push rod housing support ring being made up of phenolic resin.
A kind of 5. servo electric jar of oil-free grease lubrication according to claim 1, it is characterised in that the oil-free grease lubrication
Servo electric jar also include：
Nut support ring (11)；
The nut support ring (11) is arranged in the groove of the push rod flange (8), and support is provided for nut (7)；The spiral shell
The external diameter of female support ring (11) is more than the external diameter of nut (7).
A kind of 6. servo electric jar of oil-free grease lubrication according to claim 5, it is characterised in that the nut support ring
(11) using the nut support ring being made up of phenolic resin.
A kind of 7. servo electric jar of oil-free grease lubrication according to claim 1, it is characterised in that the oil-free grease lubrication
Servo electric jar also include：
Cushion pad (15) and preceding cushion pad (16) afterwards；
Freely and towards bearings (5), right side is close to nut (7) for the left side of cushion pad (15) after described；
The right side of the preceding cushion pad (16) is connected by screw the left surface in cylinder barrel Supporting cover (10), left side freely and
Towards the push rod flange (8).
8. the servo electric jar of a kind of oil-free grease lubrication according to claim 1, it is characterised in that in the leading screw (4)
Solid lubricant layer is applied or is coated with power train (2)；The solid lubricant layer is using kollag or includes the solid
The composite of lubricant.
A kind of 9. servo electric jar of oil-free grease lubrication according to claim 1, it is characterised in that the bearings
(5) bearing in is self-lubricating bearing.
A kind of 10. servo electric jar of oil-free grease lubrication according to claim 1, it is characterised in that the without grease profit
Sliding servo electric jar also includes：
Push rod joint (14) and the earrings (17) that the push rod housing (9) right-hand member is connected to by the push rod joint (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710929278.0A CN107707070A (en) | 2017-10-09 | 2017-10-09 | A kind of servo electric jar of oil-free grease lubrication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710929278.0A CN107707070A (en) | 2017-10-09 | 2017-10-09 | A kind of servo electric jar of oil-free grease lubrication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107707070A true CN107707070A (en) | 2018-02-16 |
Family
ID=61184717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710929278.0A Pending CN107707070A (en) | 2017-10-09 | 2017-10-09 | A kind of servo electric jar of oil-free grease lubrication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107707070A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578150A (en) * | 2018-12-29 | 2019-04-05 | 中国船舶重工集团公司第七0三研究所 | A kind of UGT6001 gas turbine inlet adjustable guide vane driving mechanism |
| CN109861447A (en) * | 2019-01-08 | 2019-06-07 | 厦门微控科技有限公司 | High thrust, antifatigue electric cylinder |
| CN113803430A (en) * | 2021-08-10 | 2021-12-17 | 锐迈机械科技（吴江）有限公司 | Motor driving structure and motor driving device |
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| CN102152318A (en) * | 2011-05-04 | 2011-08-17 | 中国科学院等离子体物理研究所 | Robot drive mechanism used in high temperature vacuum environment |
| US20130285494A1 (en) * | 2010-12-21 | 2013-10-31 | Linak A/S | Linear actuator |
| CN206294013U (en) * | 2016-12-29 | 2017-06-30 | 中能（天津）智能传动设备有限公司 | A kind of electric pushrod for being easy to safeguard |
| CN206517223U (en) * | 2016-12-16 | 2017-09-22 | 东北石油大学 | A kind of small-sized electric cylinder |
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2017
- 2017-10-09 CN CN201710929278.0A patent/CN107707070A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130285494A1 (en) * | 2010-12-21 | 2013-10-31 | Linak A/S | Linear actuator |
| CN102152318A (en) * | 2011-05-04 | 2011-08-17 | 中国科学院等离子体物理研究所 | Robot drive mechanism used in high temperature vacuum environment |
| CN206517223U (en) * | 2016-12-16 | 2017-09-22 | 东北石油大学 | A kind of small-sized electric cylinder |
| CN206294013U (en) * | 2016-12-29 | 2017-06-30 | 中能（天津）智能传动设备有限公司 | A kind of electric pushrod for being easy to safeguard |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578150A (en) * | 2018-12-29 | 2019-04-05 | 中国船舶重工集团公司第七0三研究所 | A kind of UGT6001 gas turbine inlet adjustable guide vane driving mechanism |
| CN109861447A (en) * | 2019-01-08 | 2019-06-07 | 厦门微控科技有限公司 | High thrust, antifatigue electric cylinder |
| CN109861447B (en) * | 2019-01-08 | 2023-10-27 | 厦门微控科技有限公司 | High thrust and anti-fatigue electric cylinder |
| CN113803430A (en) * | 2021-08-10 | 2021-12-17 | 锐迈机械科技（吴江）有限公司 | Motor driving structure and motor driving device |
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Application publication date: 20180216 |