CN103411011A - Intelligent linear stroke electric actuating mechanism - Google Patents
Intelligent linear stroke electric actuating mechanism Download PDFInfo
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- CN103411011A CN103411011A CN201310295465XA CN201310295465A CN103411011A CN 103411011 A CN103411011 A CN 103411011A CN 201310295465X A CN201310295465X A CN 201310295465XA CN 201310295465 A CN201310295465 A CN 201310295465A CN 103411011 A CN103411011 A CN 103411011A
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 125000003700 epoxy group Chemical group 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 230000001276 controlling effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000000875 corresponding Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000005039 chemical industry Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000002441 reversible Effects 0.000 description 1
- 230000001360 synchronised Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention particularly discloses an intelligent linear stroke electric actuating mechanism which comprises an outer shell body, a main transmission mechanism, a manually-automatic switching device and a control system, wherein two stand columns are arranged on the bottom of the outer shell body, the control system controls the main transmission mechanism, and the output end of the main transmission mechanism is connected with a connecting nut which is connected with a load; a positioning plate is fixed at the output end of the main transmission mechanism, the main transmission mechanism drives the positioning plate to move upwards and downwards along with the two stand columns, and the manually-automatic switching device is arranged on one side of the main transmission mechanism. The intelligent linear stroke electric actuating mechanism can achieve linear displacement output intelligent control, and has the advantages of being flexible in overall structure, high in thrust, efficiency and precision, low in noise, reliable in performance and the like.
Description
Technical field
The present invention specifically discloses a kind of Intelligent straight-stroke electric actuator.
Background technique
Electric actuator is very important field device in industrial process control system, and its energy is taken conveniently, Installation and Debugging are simple, obtains applying more and more widely at industrial departments such as electric power, metallurgy, oil, chemical industry.Straight stroke electric actuating mechanism is accepted the input signal of regulator, and converts thereof into straight-line displacement proportional to input signal and remove to be with the controlling mechanisms such as movable valve, baffle plate, to realize automatic control.There are problems in the Present Domestic straight stroke electric actuating mechanism, as complex structure, rate of fault is high, noise is large, debugging is complicated, control accuracy is low etc.The Professional visitors generally believes, is badly in need of quality intelligent straight stroke electric actuating mechanism really up to the mark and puts goods on the market.
Summary of the invention
The shortcoming existed in order to solve prior art, the present invention specifically discloses a kind of Intelligent straight-stroke electric actuator.
The technical solution used in the present invention is as follows:
A kind of Intelligent straight-stroke electric actuator, comprise frame, main drive gear, hand automatic switching control equipment and control system, the bottom of described frame is provided with two columns, described control system is controlled main drive gear, and the output terminal of described main drive gear connects a load attaching nut; And the output terminal at main drive gear is fixed with positioning plate, described positioning plate moves up and down along two columns under the driving of main drive gear, is provided with the hand automatic switching control equipment in a side of main drive gear.
Described main drive gear comprises a motor, described motor drives the worm gear rotation by slowing-down structure, described worm-gear driven leading screw rotation, nut on leading screw is connected with the load attaching nut, nut on leading screw drives the positioning plate be fixed thereon and moves up and down, and the load attaching nut drives load movement.
Described frame, comprise the upper shell and the lower shell body that cooperatively interact up and down, and upper shell adopts the square structure with gradient, lower shell body and upper shell are by the sealing of O type circle, and described upper shell and lower shell body adopt die-cast aluminum alloy material, after oxidation processes, spray epoxy.
Described hand automatic switching control equipment, comprise the worm screw be meshed with worm gear, and described worm screw one end is connected with the pole of being fixed in frame by spring, and on frame, be provided with the limit switch that the control motor cut-offs, and limit switch coordinates with worm screw; The worm screw the other end connects a set of manual setter, and on worm screw, is provided with two grooves, and described groove matches with clutch handle, and described clutch handle is stuck in the groove of frame, and with the worm screw abutting end higher than the inwall bottom lower shell body.
On described worm screw, back-up ring is arranged, described back-up ring matches with the axle sleeve on being located at worm screw, and described axle sleeve is stuck in frame.Described manual setter comprises a handwheel, and described handwheel is bolted on worm screw.Described handwheel is provided with handle, and described handle and handwheel are flexibly connected.Between described clutch handle and worm screw, clutch spring is installed.Described spring and pole be stuck in worm shaft to hole in.Described handwheel is by pad and being bolted on worm screw.Between described worm screw and frame, coordinate by sleeve sealing, between axle sleeve and housing, cross drive fit.
Described actuator also comprises position detecting module, comprise connecting rod, rack-plate, gear and potentiometer, the Vertical direction of described positioning plate is connected with a connecting rod parallel with output shaft, described connecting rod is provided with rack-plate, described rack-plate upper rack with potentiometric gear be housed coordinate, the linear displacement signal after described potentiometer will be changed sends to control system.
Described actuator also comprises a spacing module, comprise two rack-mount limit switches and be arranged on two projections realizations on rack-plate, described two limit switches coordinate with two projections, described limit switch is controlled cut-offfing of motor power, described support is arranged on a side of rack-plate, and be fixed on be located in frame in cover.
Described Intelligent straight-stroke electric actuator also comprises inner cap, be covered in frame in described, by worm gear, worm screw and manually the automatic switching control equipment lid below, cover in motor, reducing gear, gear, tooth bar, control panel and support are arranged on.
The compression disc spring of the in-built guaranteed load closing force of described load attaching nut, the tight closing of proof load.
Described two root post one ends are fixed on actuator's lower shell body, an end connecting valve seat; And post the stroke scale in described column one side.
Described control system comprises a circuit board, on described circuit board, is provided with a controller and the power circuit be connected with controller respectively, overload protecting circuit, LED display circuit; And controller also is connected with potentiometer feeder loop, motor by wire.
Beneficial effect of the present invention:
Can realize the straight-line displacement output intelligent control of electric actuator, have the overall structure dexterity, advantages such as thrust is large, efficiency is high, precision is high, noise is low, reliable performance.
The accompanying drawing explanation
Fig. 1 overall structure figure of the present invention;
The structural drawing of Fig. 2 hand automatic switching control equipment;
Fig. 3 gear plate structural representation of the present invention;
In figure: 1 upper shell, 2 rack-plates, 2-1 tooth bar, 2-2 gear, 2-3 potentiometer, 2-4 projection, 2-5 limit switch, 3 connecting rods, 4 inner caps, 5 lower shell bodys, 6 columns, 7 attaching nuts, 8 positioning plates, 9 nuts, 10 leading screws, 11 bearings, 12 clutch handles, 12-1 clutch spring, 12-2 axle sleeve, 12-3 worm screw, 12-4 pole spring, 12-5 pole, 13 worm gears, 14 handwheels, 14-1 handle, 15 driving sleeves, 16 keys, 17 reducing gears, 18 motors.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing:
The present invention relates to a kind of Intelligent straight-stroke electric actuator, mainly comprise frame, main drive gear, hand automatic switching control equipment, spacing module, position detecting module and control system,
The frame of Intelligent straight-stroke electric actuator, by upper shell 1 and lower shell body 5, formed, the square structure that upper shell 1 adopts with certain gradient, be convenient to die casting, and lower shell body 5 plays the main support effect, unique design simplification mechanical structure, between housing, adopt unique O type circle sealing, water proof and dust proof is good, and housing adopts die-cast aluminum alloy material, through oxidation processes, spray epoxy, integrate robustness, corrosion resistance and portability.
The main drive gear of Intelligent straight-stroke electric actuator, mainly by motor 18, reducing gear 17, worm gear, leading screw 10 and nut 9, formed, motor 18 requires the output torque according to controlling, by reducing gear 17, worm gear 13, be delivered on leading screw 10, drive leading screw 10 rotations, slowing-down structure 17 is connected by key 16 with worm gear 13, and worm gear 13 coordinates by bearing 11 with leading screw 10, leading screw 10 by nut 9, will rotatablely move change straight line motion into, by torque transfer, be thrust, drive stem movement.Nut 9 prevents the positioning plate rotated 8 with one, and positioning plate 8 is fixed on nut 9, follows it and moves up and down; Positioning plate 8 also can be made position indicator, and column 6 one sides are posted the stroke scale, and positioning plate 8, in along column 6, moving up and down process, can be read the stroke size by corresponding scale indication.Motor 18 adopts reversible electric machine, built-in overheat protector, but frequent movement.Main transmission structure rationally, reliable performance, output profit steadily, noise is low, noise control is outstanding in like product, reaches quiet standard, can realize that maximum can reach the high thrust output of 30kN, surpasses existing non-how rotating straight stroke electric actuating mechanism both at home and abroad.Than many revolutions straight stroke electric actuating mechanism, weight alleviates greatly, simple in structure many, and cost is also much lower, but function is suitable.
The hand automatic switching control equipment of Intelligent straight-stroke electric actuator, mainly comprise the worm screw 12-3, clutch handle 12, clutch spring 12-1, handwheel 14, handle 14-1, pole 12-5, pole spring 12-4 and the limit switch that with worm gear, are meshed, described worm screw one end is connected with the pole 12-5 that is fixed in frame 1 by spring, and on frame 1, be provided with and control the limit switch that motor cut-offs, limit switch coordinates with worm screw 12-3; The worm screw 12-3 the other end connects a set of manual setter, and on worm screw 12-3, be provided with two grooves, described groove matches with clutch handle 12, and described clutch handle 12 is stuck in the groove of frame 1, and with the inwall of worm screw 12-3 abutting end higher than lower shell body 5 bottoms.
On worm screw 12-3, back-up ring is arranged, described back-up ring matches with the axle sleeve 12-2 on being located at worm screw 12-3, and described axle sleeve 12-2 is stuck in frame.Described manual setter comprises a handwheel 14, and described handwheel 14 is bolted on worm screw 12-3.Described handwheel 14 is provided with handle 14-1, and described handle 14-1 and handwheel 14 are flexibly connected.Between described clutch handle 12 and worm screw 12-3, clutch spring is installed.Described spring and pole 12-5 are stuck in the axial hole of worm screw 12-3.Described handwheel 14 is by pad and being bolted on worm screw 12-3.Between described worm screw 12-3 and frame 1, be sealed and matched by axle sleeve 12-2, between axle sleeve 12-2 and frame 1, cross drive fit.
By the drawing of clutch handle 12, pine operation, under the effect that is positioned at the inner pole spring of worm screw 12-3, worm gear 13 and worm screw 12-3 match or disengagement, worm gear 13 is corresponding throws off or the touching limit switch, limit switch is connected with motor 18 power supplys, the corresponding disconnection or connection motor 18 power supplys, thus realize manually controlling and the automatic switching of controlling; Described worm gear 13 is provided with driving sleeve 15, and driving sleeve 15 connects slowing-down structure, realizes transmission; Worm gear 13 is bolted with driving sleeve 15.Between worm screw 12-3 and frame 1, be sealed and matched by axle sleeve 12-2, between axle sleeve 12-2 and frame 1, cross drive fit.
Handle 14-1 on handwheel folds in automatic operation, open manually operated the time, is convenient to manually-operable, saves simultaneously installing space.Manual automatic switchover engaging and disengaging gear of the present invention is than current all structures, has structure dexterity, good reliability, takes up space littlely, easy and simple to handle, and the especially interpolation of limit switch, added double insurance for hand automatically switches.
The spacing module of Intelligent straight-stroke electric actuator; mainly by two rack-mount limit switch 2-5, realized with two projection 2-4 that are arranged on rack-plate; after the upper and lower limit bit switch is encountered upper and lower projection; the limit information of stroke is fed back to servoamplifier; determine the valve switch limit position, play the effect of protection motor.This part-structure simplicity of design, reliable, cost is low.
The position detecting module of Intelligent straight-stroke electric actuator, mainly by connecting rod 3, rack-plate 2, gear 2-2 and potentiometer 2-3 form, on positioning plate 8, be connected with a connecting rod 3, connecting rod 3 moves with output shaft synchronous, rack-plate 2 upper rack 2-1 and the gear 2-2 cooperating that potentiometer 2-3 is housed, potentiometer 2-3 rotation when gear 2-2 rotates, straight-line displacement is transformed into the angular displacement of potentiometer 2-3, angular displacement is expressed by resistance change, resistance variations changes through control panel circuit correspondence servoamplifier signal and the valve position feedback output as a comparison that current signal offers control system into.
Intelligent straight-stroke electric actuator also comprises inner cap 4, column 6, attaching nut 7, and nut 9 is connected with valve rod by attaching nut 7, and the drive output shaft that moves up and down of nut 9 moves up and down.By lids such as worm gear 13, worm screw and manual automatic switching control equipments below, motor, reducing gear, rack and pinion assembly, wiring terminal, control panel and support etc. are arranged on inner cap 4 inner cap 4.The compression disc spring of the in-built guaranteed valve closing force of attaching nut, can guarantee the tight closing of valve.Two root post one ends are fixed on actuator's lower shell body, an end connecting valve seat.
The Intelligent straight-stroke electric control system of actuating mechanism, comprise a circuit board, on described circuit board, is provided with a controller and the power circuit be connected with controller respectively, overload protecting circuit, LED display circuit; And controller also is connected with potentiometer feeder loop, motor by wire.By the 4-20mA direct current signal linear conversion of input, be the output shaft straight-line displacement amount, thereby make the staying at random location of output shaft in range of actuator; Straight-line displacement amount drives the angular displacement potentiometer by the gear rack transmission, potentiometric resistance change into current signal as the aperture signal feed back to controller, aperture signal and input signal form deviation signal, utilize the PID control law that deviation between regulator signal and aperture signal is reduced, control section makes motor stop on this position when deviation is eliminated.Control system adopts advanced hydrid integrated circuit, and reliability is high, and the band big screen LED integrates control command, state demonstration, malfunction alarm; Control system band overload protection unit, but three kinds of states of setting signal: self-locking, complete shut-down and standard-sized sheet.Controller self can guarantee not produce under the prerequisite of vibration in final controlling element work, the employing optimum sensitivity is controlled, do not need manually to adjust, change thereby be conducive to improve actuator position the accuracy that changes tracking with control signal, improve the quality of whole control loop; If do not need such sensitivity, the user also can manually can arrange 30 grades of sensitivity by manually arranging, and every grade of variable quantity is 0.1%.
The present invention can realize the straight-line displacement output intelligent control of electric actuator, has the overall structure dexterity, advantages such as thrust is large, efficiency is high, precision is high, noise is low, reliable performance.
Claims (10)
1. Intelligent straight-stroke electric actuator, it is characterized in that: comprise frame, main drive gear, hand automatic switching control equipment and control system, the bottom of described frame is provided with two columns, described control system is controlled main drive gear, and the output terminal of described main drive gear connects a load attaching nut; And the output terminal at main drive gear is fixed with positioning plate, described positioning plate moves up and down along two columns under the driving of main drive gear, is provided with the hand automatic switching control equipment in a side of main drive gear.
2. actuator as claimed in claim 1, it is characterized in that: described main drive gear comprises a motor, described motor drives the worm gear rotation by slowing-down structure, described worm-gear driven leading screw rotation, nut on leading screw is connected with the load attaching nut, nut on leading screw drives the positioning plate be fixed thereon and moves up and down, and the load attaching nut drives load movement.
3. actuator as claimed in claim 1, it is characterized in that: described hand automatic switching control equipment, comprise the worm screw be meshed with worm gear, described worm screw one end is connected with the pole of being fixed in frame by spring, and on frame, be provided with and control the limit switch that motor cut-offs, limit switch coordinates with worm screw; The worm screw the other end connects a set of manual setter, and on worm screw, is provided with two grooves, and described groove matches with clutch handle, and described clutch handle is stuck in the groove of frame, and with the worm screw abutting end higher than the inwall bottom lower shell body.
4. actuator as claimed in claim 1, it is characterized in that: described actuator also comprises position detecting module, comprise connecting rod, rack-plate, gear and potentiometer, the Vertical direction of described positioning plate is connected with a connecting rod parallel with output shaft, described connecting rod is provided with rack-plate, described rack-plate upper rack with potentiometric gear be housed coordinate, the linear displacement signal after described potentiometer will be changed sends to control system.
5. actuator as claimed in claim 4, it is characterized in that: described actuator also comprises a spacing module, comprise two rack-mount limit switches and be arranged on two projections realizations on rack-plate, described two limit switches coordinate with two projections, described limit switch is controlled cut-offfing of motor power, described support is arranged on a side of rack-plate, and be fixed on be located in frame in cover.
6. actuator as claimed in claim 1, it is characterized in that: described frame, comprise the upper shell and the lower shell body that cooperatively interact up and down, upper shell adopts the square structure with gradient, lower shell body and upper shell are by the sealing of O type circle, and described upper shell and lower shell body adopt die-cast aluminum alloy material, after oxidation processes, spray epoxy.
7. actuator as claimed in claim 1, it is characterized in that: described actuator also comprises inner cap, in described, be covered in frame, by worm gear, worm screw and manual automatic switching control equipment lid below, in being arranged on, motor, reducing gear, gear, tooth bar, control panel and support cover.
8. actuator as claimed in claim 1, is characterized in that: the compression disc spring of the in-built guaranteed valve closing force of described load attaching nut.
9. actuator as claimed in claim 1, it is characterized in that: described two column one ends are fixed on actuator's lower shell body, an end connecting valve seat, and a side is posted the stroke scale on described column.
10. actuator as claimed in claim 1, it is characterized in that: described control system comprises a circuit board, on described circuit board, is provided with a controller and the power circuit be connected with controller respectively, overload protecting circuit, LED display circuit; And controller also is connected with potentiometer feeder loop, motor by wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310295465.XA CN103411011B (en) | 2013-07-15 | 2013-07-15 | A kind of Intelligent straight-stroke electric topworks |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310295465.XA CN103411011B (en) | 2013-07-15 | 2013-07-15 | A kind of Intelligent straight-stroke electric topworks |
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| CN103411011A true CN103411011A (en) | 2013-11-27 |
| CN103411011B CN103411011B (en) | 2016-06-08 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500824A (en) * | 2014-12-26 | 2015-04-08 | 沃尔达环境技术江苏股份有限公司 | Intelligent valve actuator |
| CN105909822A (en) * | 2016-06-22 | 2016-08-31 | 窦磊 | Mute controllable electric pinch valve |
| CN106502285A (en) * | 2015-09-07 | 2017-03-15 | 南京迈瑞生物医疗电子有限公司 | Electrodynamic type equipment and its motion control method |
| CN107448666A (en) * | 2017-09-26 | 2017-12-08 | 无锡福斯拓科科技有限公司 | A kind of hand-reset structure for Direct Travel actuator |
| CN111427258A (en) * | 2020-03-03 | 2020-07-17 | 中国石化销售股份有限公司华南分公司 | Multi-redundancy servo control fault safety type straight-stroke rapid cut-off actuating mechanism |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1789770A (en) * | 2004-12-13 | 2006-06-21 | 韩国银河机械产业有限公司 | Electric/manual mode switching device for electric actuator for opening and closing valve |
| CN201656675U (en) * | 2010-04-12 | 2010-11-24 | 鞍山永恒自控仪表有限公司 | Intelligent straight-stroke electric actuator |
| CN101951061A (en) * | 2010-09-14 | 2011-01-19 | 南京科远自动化集团股份有限公司 | Novel intelligent straight travel electric executing mechanism |
| CN201820148U (en) * | 2010-10-29 | 2011-05-04 | 天津市津达执行器有限公司 | Straight travel flameproof electronic bit firing mechanism |
| CN203036053U (en) * | 2013-01-24 | 2013-07-03 | 浙江澳翔自控科技有限公司 | Novel straight stroke electric actuator |
| CN203036054U (en) * | 2013-01-25 | 2013-07-03 | 浙江澳翔自控科技有限公司 | Manual-electric switching mechanism of straight travel electric actuator |
| CN203363360U (en) * | 2013-07-15 | 2013-12-25 | 济南大学 | Intelligent linear electric actuator mechanism |
-
2013
- 2013-07-15 CN CN201310295465.XA patent/CN103411011B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500824A (en) * | 2014-12-26 | 2015-04-08 | 沃尔达环境技术江苏股份有限公司 | Intelligent valve actuator |
| CN104500824B (en) * | 2014-12-26 | 2016-12-07 | 沃尔达环境技术江苏股份有限公司 | A kind of intelligent valve executor |
| CN106502285A (en) * | 2015-09-07 | 2017-03-15 | 南京迈瑞生物医疗电子有限公司 | Electrodynamic type equipment and its motion control method |
| CN105909822A (en) * | 2016-06-22 | 2016-08-31 | 窦磊 | Mute controllable electric pinch valve |
| CN107448666A (en) * | 2017-09-26 | 2017-12-08 | 无锡福斯拓科科技有限公司 | A kind of hand-reset structure for Direct Travel actuator |
| CN111427258A (en) * | 2020-03-03 | 2020-07-17 | 中国石化销售股份有限公司华南分公司 | Multi-redundancy servo control fault safety type straight-stroke rapid cut-off actuating mechanism |
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| CN103411011B (en) | 2016-06-08 |
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Effective date of registration: 20190926 Address after: Room 202, 2nd floor, 253 Center, Nanxinzhuang West Road, Jinan City, Shandong Province Patentee after: Jinan Huibang Automatic Instrument Co., Ltd. Address before: Ji'nan City Central Jiwei Road No. 106 of 250022 cities in Shandong Province Patentee before: University of Jinan |
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