CN203788087U - Electric linear driving device - Google Patents
Electric linear driving device Download PDFInfo
- Publication number
- CN203788087U CN203788087U CN201420163996.3U CN201420163996U CN203788087U CN 203788087 U CN203788087 U CN 203788087U CN 201420163996 U CN201420163996 U CN 201420163996U CN 203788087 U CN203788087 U CN 203788087U
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- rotor
- nut
- bearing
- linear driving
- driving device
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- 238000004804 winding Methods 0.000 claims abstract description 33
- 239000002131 composite material Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 13
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Transmission Devices (AREA)
Abstract
The utility model relates to an electric linear driving device, and the technical problem to be solved is to provide the electric linear driving device which is concise in structure and capable of stably outputting linear driving force. The electric linear driving device comprises a leading screw, a machine base, a rotor and a nut. The rotor is fixedly provided with a permanent magnet or a rotor winding formed by winding coils. The rotor is a hollow shaft. One end of the rotor is sleeved with a rotor bearing and the rotor is arranged on the machine base via the rotor bearing. The nut is connected with the threads of the leading screw sleeved in the nut in a matching way via a pin roller arranged in the nut. The pin roller is arranged on an end cover and the nut via pin roller bearings arranged in the end cover and the nut. The nut is arranged on the end cover and a shell via nut bearings. The end surface of the end cover is provided with a scraper sealing ring and a blocking circle. The electric linear driving device is concise in structure and can be applied to occasions requiring output of the linear driving form.
Description
Technical field
The utility model relates to motor driving apparatus field, especially a kind of electric linear driving device.
Background technology
Existing linear drive apparatus has the electric pushrod of comprising, hydraulic jack, three kinds of versions of cylinder.Wherein the parts such as motor, decelerator, shaft coupling, lead screw pair, push rod, cylinder body, controller, driver, limit switch, dust cover, installation fitting, anti-rotation device that basic composition is of electric pushrod form.Electric pushrod effective travel is short, and rigidity is bad, and transmission efficiency is low, and high expensive, while realizing rectilinear motion, need to be equipped with decelerator, and shaft coupling etc. have increased demand and the manufacturing cost of installing space, and fault rate is most.And the major defect of hydraulic jack is comparatively complexity of the hydraulic jack course of work, need to be equipped with special fuel tank pressure oil is provided, exist potential oil to reveal simultaneously, be subject to influence of temperature change large (should not move) under high temperature or low temperature, and the problem such as later maintenance cost height, and need to be to hydraulic system periodic oil change, thereby maintenance and the cost of overhaul be greatly increased.In addition, the major defect of cylinder is to make cylinder produce rectilinear motion, need to be equipped with special air compressor and valve pipeline etc., provide lasting pressure also to need to be equipped with air accumulator, the installing space needing is larger, and the pressure of γ-ray emission is smaller, generally be no more than 1.2MP, and the pressure of air can decline along with the growth of pipeline, so the linear thrust that cylinder produces is smaller, stroke and speed also can not accurately be controlled.
Utility model content
Technical problem to be solved in the utility model is to provide that a kind of structure is simplified and can stablizes the electric linear driving device of output linear drives power.
The utility model solves the technical scheme that its technical problem adopts: electric linear driving device, comprise leading screw and the inner support that is fixedly installed stator winding, also comprise the rotor being arranged in stator winding, the nut being fixedly connected with by rotor bolt group with rotor, the encoder being connected with described rotor, and for rotor being realized to the brake of braking, the rotor winding that is fixedly installed permanent magnet on rotor or formed by coiling, rotor is hollow shaft, one end of described rotor is socketed with rotor bearing and described rotor is arranged on support by described rotor bearing,
Nut is connected with the threads of lead screw being socketed in nut by the roller being arranged in nut, roller is arranged on end cap and nut by the roller bearing being arranged in end cap and nut, nut is arranged on end cap and housing by nut bearing, and end cap end face is provided with wiper seal and back-up ring.
Further, the rotor winding that is fixedly installed permanent magnet or is formed by coiling on described rotor outer circle week.
Further, the structure that described rotor and nut are integrated.
Further, comprise housing, described end cap is arranged on housing by bolt of cover group is dismountable, and housing is by dismountable being arranged on support of housing bolt group.
Further, described leading screw is one start screw axle or multiple thread axle.
Further, the form of thread of described leading screw is 60 ° of thread forms, 90 ° of thread forms, rectangle, trapezoidal or tooth rectangle.
Be further, comprise the planetary roller screw pair being made up of leading screw, roller and nut, the version of described planetary roller screw pair comprises normal formula planetary roller screw pair, composite type planetary roller screw pair, inverse type planetary roller screw pair, circulating planetary roller screw pair, bearing-type planetary roller screw pair or differential type planetary roller screw
Further, described nut bearing is thrust ball bearing, cylindrical roller thrust bearing, self-aligning thrust roller bearing or combined bearing.
Further, described roller bearing is needle roller bearing without inner ring, outer ring and roll assembly or drawn cup needle roller bearing.
Further, the progression of stator winding is 2～48 grades.
The beneficial effects of the utility model are: stator winding is made up of three identical symmetric windings of being separated by 120 degree electrical degrees in space, connect after three-phase symmetrical power, flow through three-phase symmetrical electric current.The magnetic field that the rotor winding that on the magnetic field that stator winding produces and rotor, permanent magnet or coiling form produces attracts each other, the magnetic field producing due to stator winding is rotating magnetic field, be subject to the effect of electromagnetic force, rotor can be followed the direction of rotation rotation in magnetic field, forms electromagnetic torque.Along with the rotation of rotor, the nut being connected with described rotor also can be driven, after support and housing are fixed, the forms of motion of the rotation of rotor can be converted into by lead screw pair the rectilinear motion of leading screw, so far, the utility model has been realized the linear movement form that is converted into the straight line stable forms of motion of rotation.Contrary, also can leading screw be maintained static by corresponding measure moving, obtain rotatablely moving after electric by rotor, be aided with the hinged of support and fixed pan, realize the rectilinear motion of whole support with respect to leading screw.In addition, the encoder being connected with rotor, is for the detection to rotor speed and control, thereby guarantees the accurate control of rotor revolution number.The brake arranging is for realizing braking to rotor timely.The utility model structure is simplified, the stable forms of motion by rotation of energy is converted into the linear movement form of straight line, in whole use procedure, being also convenient to realize omnidistance automation accurately controls, thereby realize the stable output of the slow-speed of revolution, high pulling torque, can be applied to the occasion that needs output linearity drive form.
Brief description of the drawings
Fig. 1 is cutaway view of the present utility model.
In figure, be labeled as: leading screw 1, support 2, rotor bearing 3, rotor 4, permanent magnet 5, stator winding 6, housing bolt group 7, housing 8, rotor bolt group 9, nut 10, end cap 11, wiper seal 12, back-up ring 13, bolt of cover group 14, nut bearing 15, roller 16, roller bearing 17, encoder 18, brake 19.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Electric linear driving device as shown in Figure 1, comprise leading screw 1 and the inner support 2 that is fixedly installed stator winding 6, also comprise the rotor 4 being arranged in stator winding 6, the nut 10 being fixedly connected with by rotor bolt group 9 with rotor 4, the encoder 18 being connected with described rotor 4 and for rotor 4 being realized to the brake 19 of braking, the rotor winding that is fixedly installed permanent magnet 5 on rotor 4 or formed by coiling, rotor 4 is hollow shaft, and one end of described rotor 4 is socketed with rotor bearing 3 and described rotor 4 is arranged on support 2 by described rotor bearing 3; Nut 10 is connected with leading screw 1 threaded engagement being socketed in nut 10 by the roller 16 being arranged in nut 10, roller 16 is arranged on end cap 11 and nut 10 by the roller bearing 17 being arranged in end cap 11 and nut 10, nut 10 is arranged on end cap 11 and housing 8 by nut bearing 15, and end cap 11 end faces are provided with wiper seal 12 and back-up ring 13.
If the technological improvement foundation main of the nut 10 of the utility model planetary roller screw pair, roller 16 and leading screw 1 improved obtaining in addition on the basis of the patent of the patent No. 20131409382.9, and lead screw transmission principle of the present utility model is consistent with the transmission principle of the patent No. 20131409382.9.It is the electric-machine directly-driven technology that existing leading screw technology merges mutually with motor direct-drive technology that the utility model belongs to, its technological essence belongs to moment direct-drive permanent-magnetism motor, it can eliminate mechanical transmission components all in drive system, as speed-changing gear box, belt, pulley and shaft coupling etc., and realization is directly connected with load.In the time of practical application, because stator winding 6 is made up of three identical symmetric windings of being separated by 120 degree electrical degrees in space, therefore passing into after three-phase symmetrical power, the magnetic field that stator winding 6 produces for rotating magnetic field, and the permanent magnet 5 of this rotating magnetic field and rotor 4 or rotor winding attract each other.Along with the rotation of the magnetic direction of rotating magnetic field, rotor 4 also rotates thereupon, and rotor 4 is connected by rotor bolt group 9 with nut 10, so nut 10 rotates with rotations such as rotors 4.Due between leading screw 1 and nut 10, roller 16 for threaded engagement is connected, after support 6 and housing 8 are fixed, the rotation of rotor 4 can be connected the rectilinear motion that is converted into leading screw 1 by the threaded engagement between nut 10, roller 16 and leading screw 1.Especially, in order to ensure stability and the accuracy of transmission, can also seam be set at described rotor 4 and nut 10 and coordinate to ensure its concentricity, in nut 10 and on end cap 11, roller 16 is set uniformly, and described nut 10 is connected by roller 16 and leading screw 1
Thereby the wiper seal 12 arranging coordinates and prevents throwing away of grease with back-up ring 13, ensure the clean of facility environment.If the utility model is connected with electric control system, can realize the automation control of height.For brake 19, thereby can select the external splines of the axle head of the internal spline of described brake 19 and rotor 4 to interact and play the effect of brake, also can select block brake to be arranged on housing 8, the periphery effect of brake and nut 10 realizes braking brake.
Rotor 4 is hollow shaft, stator winding 6 is fixed in support 2, one end of rotor 4 is provided with bearing 3, bearing 3 is arranged in support 2, the other end of rotor 4 is connected with the nut 10 of planetary roller screw pair by bolt 9, in the time being arranged on the magnetic fields that the permanent magnet 5 of rotor 4 or rotor winding and stator winding 6 produce, rotating magnetic field can be rotated by rotor driven 4 together, nut 10 can rotate along with the rotation of rotor 4, due to nut 10 and roller 16, leading screw 1, and adopt threaded engagement between end cap 11, thereby make rotatablely moving of rotor 4 be converted to the rectilinear motion of leading screw 1, bearing 17 rises and keeps and supporting role the installation of roller.
General, the rotor winding that is fixedly installed permanent magnet 5 or is formed by coiling on rotor 4 excircles, depending on the needs of actual production and choose flexibly, no matter permanent magnet 5 or rotor winding is all in order to ensure rotor 4 generation magnetic fields, place and to realize rotor 4 and follow stator winding 6 rotating magnetic fields and be rotated.
In order to simplify the operation of making, rotor 4 and nut 10 can be designed to the structure of one, can allow like this part make easier.
For the ease of processing, assembling and the cleaning of product, end cap 11, casing 8 and support 2 adopt bolt group to assemble, for housing 8, can select described end cap 11 to be arranged on housing 8 by bolt of cover group 14 is dismountable, housing 8 is arranged on support 2 by housing bolt group 7 is dismountable., such design has also increased the convenience of later maintenance of the present utility model greatly.
For the selection of leading screw 1, need to ensure the output linear drives power that leading screw 1 can be stable.Therefore, general in conjunction with putting into practice engineering experience, can select described leading screw 1 for one start screw axle or multiple thread axle.And for the form of thread of leading screw 1, the form of thread that can select is 60 ° or 90 °, or rectangle, trapezoidal or tooth rectangle is all passable.
For the selection of lead screw pair version, also be can be diversified, general, can selection standard formula planetary roller screw pair, the general lead screw pair form of the form such as composite type planetary roller screw pair, inverse type planetary roller screw pair, circulating planetary roller screw pair, bearing-type planetary roller screw pair or differential type planetary roller screw pair, concrete selection chosen flexibly depending on actual demand, and all architectural features meet respectively the architectural feature of each form planetary roller screw.
For choosing of nut bearing 15, preferably described bearing 15 is thrust ball bearing, cylindrical roller thrust bearing, self-aligning thrust roller bearing or combined bearing etc.For choosing of roller bearing 17, preferential is needle roller bearing without inner ring, outer ring and roll assembly, drawn cup needle roller bearing etc.In order to ensure the stability in running like this, the vibration when reducing as much as possible the resistance of operation and moving.For choosing of rotor bearing 3, preferential is, and described bearing 3 is open deep groove ball bearing, sealed type deep groove ball bearing etc., and reason is that rotor bearing 3 is stressed very little, and Main Function is by making to ensure the concentricity of nut 10 and rotor 4 with nut bearing 15.
For choosing of the progression of stator winding 6, the experience of binding time and product cost, general stator winding 6 progression of selecting are 2～48 grades.So not only can ensure the intensity in the magnetic field producing, also can reasonably utilize the space of support 2.
For choosing of encoder 18, can select encoder 18 for absolute encoder or incremental encoder.Set encoder 18 is the tach signals in order to obtain more accurately rotor 4, thereby realizes more accurately the automation control to motion process.
For choosing of brake 19, can preferentially select brake 19 for electromagnetic brake or magnetic powder brake, it is very large because of the suffered moment of torsion of rotor 4 doing this selection, so its braking force must be very large, therefore preferred electromagnetic brake or magnetic powder brake.
The utility model is directly by nut 10 and rotor 4 combinations, is converted into rectilinear motion thereby can ensure to rotatablely move under the prerequisite of simplified structure parts greatly.In addition, adaptable to environment of the utility model: can adapt to various high and low temperature environments and ensure product reliability and life-span.Pollution-free, environmental protection, adopt electric energy can be used as the consumption energy, instead of oils as consume the energy, energy consumption, manufacturing cost and failure rate are all lower.In addition, as long as periodically to bearing and leading screw charging-up lubricant oil fat, therefore product maintenance is easy.
Claims (10)
1. electric linear driving device, comprise that leading screw (1) and inside are fixedly installed the support (2) of stator winding (6), it is characterized in that: comprise the rotor (4) being arranged in stator winding (6), the nut (10) being fixedly connected with by rotor bolt group (9) with rotor (4), the encoder (18) being connected with described rotor (4), and for rotor (4) being realized to the brake (19) of braking, the rotor winding that is fixedly installed permanent magnet (5) on rotor (4) or is formed by coiling, rotor (4) is hollow shaft, one end of described rotor (4) is socketed with rotor bearing (3) and described rotor (4) is arranged on support (2) by described rotor bearing (3),
Nut (10) is connected with leading screw (1) threaded engagement being socketed in nut (10) by the roller (16) being arranged in nut (10), roller (16) is arranged on end cap (11) and nut (10) by the roller bearing (17) being arranged in end cap (11) and nut (10), nut (10) is arranged at end cap (11) by nut bearing (15) and housing (8) is upper, and end cap (11) end face is provided with wiper seal (12) and back-up ring (13).
2. electric linear driving device as claimed in claim 1, is characterized in that: the rotor winding that is fixedly installed permanent magnet (5) or is made up of coiling on described rotor (4) excircle.
3. electric linear driving device as claimed in claim 1, is characterized in that: the structure that described rotor (4) and nut (10) are integrated.
4. the electric linear driving device as described in claim 1,2 or 3, it is characterized in that: comprise housing (8), described end cap (11) is arranged at housing (8) above by bolt of cover group (14) is dismountable, and housing (8) is arranged on support (2) by housing bolt group (7) is dismountable.
5. the electric linear driving device as described in claim 1,2 or 3, is characterized in that: described leading screw (1) is one start screw axle or multiple thread axle.
6. the electric linear driving device as described in claim 1,2 or 3, is characterized in that: the form of thread of described leading screw (1) is 60 ° of thread forms, 90 ° of thread forms, rectangle, trapezoidal or tooth rectangle.
7. the electric linear driving device as described in claim 1,2 or 3, it is characterized in that: comprise the planetary roller screw pair being made up of leading screw (1), roller (16) and nut (10), the version of described planetary roller screw pair comprises normal formula planetary roller screw pair, composite type planetary roller screw pair, inverse type planetary roller screw pair, circulating planetary roller screw pair, bearing-type planetary roller screw pair or differential type planetary roller screw pair.
8. the electric linear driving device as described in claim 1,2 or 3, is characterized in that: described nut bearing (15) is thrust ball bearing, cylindrical roller thrust bearing, self-aligning thrust roller bearing or combined bearing.
9. the electric linear driving device as described in claim 1,2 or 3, is characterized in that: described roller bearing (17) is needle roller bearing without inner ring, outer ring and roll assembly or drawn cup needle roller bearing.
10. the electric linear driving device as described in claim 1,2 or 3, is characterized in that: the progression of stator winding (6) is 2～48 grades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420163996.3U CN203788087U (en) | 2014-04-04 | 2014-04-04 | Electric linear driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420163996.3U CN203788087U (en) | 2014-04-04 | 2014-04-04 | Electric linear driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203788087U true CN203788087U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420163996.3U Expired - Lifetime CN203788087U (en) | 2014-04-04 | 2014-04-04 | Electric linear driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203788087U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872841A (en) * | 2014-04-04 | 2014-06-18 | 成都瑞迪机械实业有限公司 | Electric straight line driving device |
| CN113586469A (en) * | 2021-08-20 | 2021-11-02 | 合肥新沪屏蔽泵有限公司 | Rotating speed steering detection device of high-temperature and high-pressure canned motor pump |
-
2014
- 2014-04-04 CN CN201420163996.3U patent/CN203788087U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872841A (en) * | 2014-04-04 | 2014-06-18 | 成都瑞迪机械实业有限公司 | Electric straight line driving device |
| CN113586469A (en) * | 2021-08-20 | 2021-11-02 | 合肥新沪屏蔽泵有限公司 | Rotating speed steering detection device of high-temperature and high-pressure canned motor pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Xiao Inventor after: Liao Shiquan Inventor after: Lu Xiaorong Inventor after: Zhou Xiaoping Inventor after: Xiao Ping Inventor after: Xiao Yunqiang Inventor after: Xu Xunze Inventor after: Tang Guohua Inventor after: Qian Wanyong Inventor after: Zhang Hengshuo Inventor before: Lu Xiaorong Inventor before: Zhou Xiaoping Inventor before: Xiao Ping Inventor before: Xiao Yunqiang Inventor before: Xu Xunze Inventor before: Tang Guohua Inventor before: Qian Wanyong Inventor before: Zhang Hengshuo Inventor before: Liao Shiquan |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LU XIAORONG ZHOU XIAOPING XIAO PING XIAO YUNQIANG XU XUNZE TANG GUOHUA QIAN WANYONG ZHANG HENGSHUO LIAO SHIQUAN TO: WANG XIAO LU XIAORONG ZHOU XIAOPING XIAO PING XIAO YUNQIANG XU XUNZE TANG GUOHUA QIAN WANYONG ZHANG HENGSHUO LIAO SHIQUAN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20170906 Address after: Shuangliu District of Sichuan province 610000 Avenue Chengdu City West four No. 909 in Hong Kong Patentee after: CHENGDU REACH MACHINERY CO.,LTD. Address before: West Port Avenue 610207 Sichuan city of Chengdu province Shuangliu County Southwest Airport Economic Development Zone No. 909 two Patentee before: REACH MACHINERY ENTERPRISE |
|
| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: Shuangliu District of Sichuan province 610225 Avenue Chengdu City West four No. 909 in Hong Kong Patentee after: Chengdu Ruidi Zhiqu Technology Co.,Ltd. Address before: Shuangliu District of Sichuan province 610000 Avenue Chengdu City West four No. 909 in Hong Kong Patentee before: CHENGDU REACH MACHINERY Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |
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| CX01 | Expiry of patent term |