CN203453599U - Straight-stroke electric actuator - Google Patents
Straight-stroke electric actuator Download PDFInfo
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- CN203453599U CN203453599U CN201320503232.XU CN201320503232U CN203453599U CN 203453599 U CN203453599 U CN 203453599U CN 201320503232 U CN201320503232 U CN 201320503232U CN 203453599 U CN203453599 U CN 203453599U
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Abstract
The utility model relates to a straight-stroke electric actuator. A motor, a pinion and a gear shaft form a first-stage transmission mechanism of the electric actuator; the central shaft of the first-stage transmission mechanism is vertically arranged on the upper surface of a substrate; the central wheel of the first-stage transmission mechanism is vertically arranged on the lower surface of the substrate; the central shaft and the central wheel are arranged on the same central line; the lower end of the central shaft is connected with an output shaft; the output shaft is connected with the bottom end of the body through a connecting flange; a worm inner gear is engaged with a manual worm rod; the connecting flange is fixed to one side of the body by a bolt; a second-stage transmission mechanism consisting of a gearwheel and the gear shaft is arranged at the upper end of the central wheel and is connected with the first-stage transmission mechanism; a third-stage transmission mechanism consisting of the central wheel, a planetary wheel and the worm inner gear is arranged on the lower surface of the gearwheel and is connected with the second-stage transmission mechanism. The straight-stroke electric actuator has the advantages of high self-locking speed per hour, relatively low efficiency influence, high transmission efficiency, low abrasion and large transmission ratio, is suitable for low-and-medium-power power transmission and is easy and convenient to install and operate, and can be controlled mutually.
Description
Technical field
The utility model relates to a kind of electric actuator, belongs to and regulates and cut-off device technical field.
Background technique
Electric actuator, can be used for the unlatching of control valve, operator both can carry out manually-operable at the scene, also can carry out telecontrol to valve, be widely used in the first-class every field of fluid pipe-line such as draining, HVAC, oil, chemical industry, electronics, light industry, food, medicine, light textile, papermaking, water power, boats and ships, smelting, energy system.
Electric actuator is mainly worm and gear clutch actuator electric actuator at present, several shortcomings below main existence:
When 1, worm and gear needs complete self-locking, angle of lead must less (General Requirements should be less than 3 ° of 30'), and now its engagement area of contact is larger, efficiency relatively little (during self-locking, efficiency is only 0.4-0.45);
Worm Wheel System is because the gap of worm and gear causing serious wear along with the number of times using increase, and during worm and gear engagement driving, the relative sliding velocity of meshing wheel between cog is large, therefore frictional loss is large, efficiency is low, while worm screw axial force is larger.
Summary of the invention
The defect existing in order to overcome above-mentioned prior art, the utility model provides a kind of novel low-loss, and high efficiency electric actuator is grouped into by several grades of driving mechanisms and hand-operated.
This electric actuator comprises body, described body upper end is provided with upper cover, the upper end open place of body is provided with substrate, substrate is provided with motor, gear on motor output shaft is meshed with the small gear below substrate, small gear and gear shaft are arranged on pinion stand, and pinion stand is bolted on substrate; Tooth on described motor output shaft, small gear, gear shaft form the one-level driving mechanism of electric actuator;
The secondary transmission part being wherein comprised of gearwheel and gear shaft, by the rotation of gear shaft, passes to secondary transmission part by the motion of one-level driving component;
If need several grades of driving mechanism transmission campaigns, can be according to identical mode, the mechanical part of each driving mechanism of preferred arrangement, meets the requirement of transmission speed ratio.
Core design of the present invention is in above-mentioned several grades of driving mechanisms described in being, afterbody WeiNGW mechanism, and wherein N table internal gear, G table planet carrier, W show planet wheel.
Central gear be vertically set on substrate below, central shaft and central gear are arranged on same center line; In the lower end of central shaft, be provided with by central gear, planet wheel, planet carrier, three grades of driving components that worm gear internal gear forms, described central gear, three planet wheels, planet carrier forms LiaoNGW mechanism with worm gear internal gear: planet carrier is connected with bolt with output shaft, and output shaft is connected with leading screw by key, and nut is connected with valve rod by joint sleeve, leading screw and nut form power screw, make nut band ovable valve stem move up and down to realize the switching of valve.Such mechanical drive mode, makes the rotary movement of electric machine rotation finally be transformed to rectilinear motion mode, and the gearwheel in secondary transmission part is connected with central gear by bolt, transmits motion on three grades of driving components;
accompanying drawing explanation:
Fig. 1 is the longitudinal sectional drawing of straight distance power-driven actuating assembling;
Fig. 2 is the transverse cross-sectional view of straight distance power-driven actuating assembling;
Fig. 3 is the longitudinal sectional drawing of NGW driving mechanism;
Fig. 4 is the B-B transverse cross-sectional view of NGW driving mechanism.
embodiment:
Below in conjunction with embodiment, the utility model will be further described.
If Fig. 1 is the longitudinal sectional drawing of straight distance power-driven actuating assembling, Fig. 2 is the transverse cross-sectional view of straight distance power-driven actuating assembling.
Electric actuator is grouped into by one-level driving mechanism, secondary drive mechanism, three grades of driving mechanisms and hand-operated.The NGW mechanism that wherein forms three grades of driving components is the core of whole electric actuator.
The related electric actuator of the utility model is by upper cover 1, substrate 2, body 5, planet wheel 6, worm gear internal gear 7, bolt 8, output shaft 9, connecting flange 10, leading screw 13, transmission nut 15, indicating piece 16, guide pillar 17, attaching nut 18, bolt 19, safety cover 20, flat key 23, bearing 25, central gear 26, planet carrier 27, manual worm 28, pinion stand 33, small gear 34, gear shaft 35, bearing 36, motor 37, central shaft 38, bearing 39, spacer sleeve 40, bolt 41, gearwheel 42, axle sleeve 43, bolt 44, O type circle 45, bolt 46, handwheel 47, bearing housing 48, coupling shaft 49, copper packing 50 forms.
Described body 5 upper-end surface dress substrates 2, electrical apparatus element and motor 37 are installed on substrate 2, body 5 upper end covers have upper cover 1, on the output shaft of motor 37, make profile of tooth and transmit motion with small gear 34 engagements, small gear 34 is arranged on gear shaft 35 by flat cover 23, the two ends of gear shaft 35 are arranged on pinion stand 33 by bearing 36, and pinion stand 33 is bolted on substrate 2.The tooth of motor 37 output shafts, small gear 34 and gear shaft 35 have formed the first order driving component of accepting motor movement.
Described secondary transmission part is comprised of gear shaft 35, gearwheel 42.
Three grades of described driving components are comprised of central gear 26,3 uniform planet wheels 6, planet carrier 27, worm gear internal gear 7, output shafts 9, central gear 26 and 3 planet wheel 6 engagements, and 3 planet wheels 6 mesh with worm gear internal gear 7 simultaneously.Self-locking action due to worm screw, worm gear internal gear 7 does not rotate, now planet carrier 27 will produce rotation, planet carrier 27 connects by bolt 8 with output shaft 9, when planet carrier 27 rotates, by bolt 8, motion and power are passed to output shaft 9, output shaft 9 lower ends are by endoporus transition fit below bearing 25 and body 5.
Described planet wheel 6 can be several uniform.
Described central shaft 38 is arranged on substrate 2 by bearing 39, and bearing can be installed spacer sleeve 40 39 times; The end of central shaft 38 is connected with output shaft 9, and output shaft 9 is fixed on the bottom end opening place of body 5 by connecting flange 10, and planet wheel 6, central gear 26, planet carrier 27 and worm gear internal gear 7 form NGW mechanism; Worm gear internal gear 7 connects manual worm 28, the axle sleeve 43 for extension of manual worm 28, by bolt 44, be fixed on a side of body 5, axle sleeve and manual worm cooperation place arrange two O type circles 45 and prevent that lubricant oil from leaking, the other end and body 5 endoporus Spielpassung, the port of manual worm 28, uses fixedly handwheel 47 of bolt 46, mounting handle on handwheel 47.Output shaft 9, central gear 26, planet wheel 6, worm gear internal gear 7 and manual worm 28 have formed the manual operation section of electric actuator.
While adopting manual work, handwheel 47 is connected and is driven worm screw to rotate by flat key, worm and wheel engagement driving, now central gear 26 is because motor damping function maintains static, cause planet wheel 26 to drive planet carrier 27 to rotate, thereby pass motion to output shaft 9, output shaft 9 is connected with leading screw 13 by flat key 23, leading screw 13 is threaded connection with transmission nut 15, transmission nut 15 is connected with attaching nut 18 by bolt 19, revolution by leading screw 13 drives transmission nut 15 to move up and down and for control valve switch, indicating piece 16 is used to indicate the position of valve, be arranged between transmission nut and joint sleeve, so that user is accurately known the on off state of valve, safety cover 20, for extension type designs, is arranged at transmission nut outside, and connects by thread with gland, can prevent final controlling element in the course of the work dirt enter the thread position of leading screw 13, guide pillar 17 is for fixing electric actuator.
The NGW of described three grades of driving mechanisms is cores of whole electric actuator.Central gear 26 1 end face outboard bearings adopt Spielpassung to be connected with planet carrier 27,3 planet wheel 6 built-in shaft bearing sleeves 48, interference fit by coupling shaft 49 one end is contained on planet carrier 27, between planet wheel 6 and planet carrier 27, copper packing 50 is housed, and planet wheel 6 end faces and planet carrier 27 end faces are separated; Central gear 26 and 3 planet wheels 6 form outer gearings, engagement formation LiaoNGW mechanism in 3 planet wheels form with worm gear internal gear 7.
beneficial effect:
The utility model has increased several grades of driving mechanisms on original one-level transmission basis, and to reach the requirement of final controlling element to transmission capacity, and the transmission of afterbody adopts planetary gear mechanism JiNGW mechanism.In straight distance power-driven actuating, use this mechanism to there is following feature:
(1) volume is little, quality is light, compact structure, and bearing capacity is strong: because Planetary Gear Transmission has power dividing effect, and form the transmission of coaxial line formula and reasonably apply internal gear pair with each central gear, therefore can make its structure very compact.And because the several planet wheels that distributing equably of the surrounding at central gear are shared load jointly, thereby the load that each gear is born is less, and allow these gears to adopt less modulus.In addition, structurally take full advantage of interior engagement bearing capacity greatly and the held volume of ring gear itself, thereby be conducive to dwindle its overall sizes, make its volume little, quality is light, and structure is very compact, and bearing capacity is strong.Generally, the overall sizes of Planetary Gear Transmission and quality are about 1/2～1/5 (bearing under identical load-up condition) of ordinary gear transmission.
(2) transmission efficiency is high: due to the symmetry properties of planetary gear transmission mechanism, it has the planet wheel of several well-balanced distributions, makes to act on the mutual balance of reaction force energy in central gear, thereby is conducive to reach the effect that improves transmission efficiency.NGW transmission type is appropriate, reasonable structural arrangement, and its efficiency value can reach 0.97～0.99.
(3) velocity ratio is larger, can realize the composition and decomposition of motion: as long as suitably select the type of Planetary Gear Transmission and join tooth scheme, just can obtain very large velocity ratio with a few gear.Only, as transmitting in the Planetary Gear Transmission of motion, its velocity ratio can reach several thousand.Be noted that Planetary Gear Transmission, when its velocity ratio is very large, still can keep many advantages such as compact structure, quality is little, volume is little.And, the complicated motion that it can also be realized the composition and decomposition of motion and realize various speed changes
(4) motion steadily, the ability of shock resistance and vibration is stronger: owing to having adopted the planet wheel that several structures are identical, be distributed in equably central gear around, thereby can make the stressed mutual balance of planet wheel.Meanwhile, also make the number of teeth that participates in engagement increase, therefore the motion of Planetary Gear Transmission is steady, the ability of opposing shock and vibration is stronger, works more reliable.
The advantage of ，NGW mechanism is that Efficiency of Planetary Transmission is high in a word, and bearing capacity is large, and speed ratio is large, and volume is little.By worm gear internal gear, can realize manual control and fitting operation simple, convenient.
Claims (5)
1. a straight distance power-driven actuating, comprises several grades of driving mechanisms and manual part, fixing with guide pillar (17);
It is characterized in that: the driving mechanism WeiNGW mechanism of afterbody, forms around the uniform planet wheel (6) of central gear (26), planet carrier (27), worm gear internal gear (7), output shaft (9) by central gear (26), at least two are above; Described central gear (26) and planet wheel (6) engagement, planet wheel (6) is meshed with worm gear internal gear (7) simultaneously, worm gear internal gear (7) does not rotate, planet carrier (27) produces rotation, planet carrier (27) connects by bolt (8) with output shaft (9), and output shaft (9) lower end is by bearing (25) and body (5) endoporus transition fit.
2. straight distance power-driven actuating as claimed in claim 1, is characterized in that: in described NGW mechanism, around the uniform planet wheel (6) of central gear (26), be three.
3. straight distance power-driven actuating as claimed in claim 1, is characterized in that: by one-level driving mechanism, secondary drive mechanism, three grades of driving mechanisms and hand-operated, be grouped into;
Wherein said one-level driving mechanism is comprised of the tooth on motor (37) output shaft and small gear (34); The upper end open place of body (5) is provided with substrate (2), and motor (37) is fixed on substrate (2); Small gear (34) engagement below of tooth on motor (37) output shaft and substrate (2); Small gear (34) is by gear shaft (35) connection teeth wheel seat (33), and pinion stand (33) is bolted on substrate (2);
Described secondary drive mechanism is comprised of gear shaft (35), gearwheel (42);
Three grades of described driving mechanism WeiNGW mechanisms;
Described manual part is comprised of output shaft (9), central gear (26), planet wheel (6), worm gear internal gear (7) and manual worm (28); Leading screw (13) is connected with output shaft (9) by flat key (23), transmission nut (15) passes through scyewed joint with leading screw (13), joint sleeve (18) is connected by bolt (19) and transmission nut, and joint sleeve (18) lower end is provided with internal thread and is connected with the valve rod of joined valve; Worm gear internal gear (7) connects manual worm (28), and the axle sleeve for extension (43) of manual worm (28) is fixed on a side of body (5) by bolt (44), and axle sleeve and manual worm cooperation place are provided with O type circle (45); The other end and body (5) endoporus Spielpassung, manual worm (28) port, uses fixedly handwheel (47) of bolt (46), upper install (handle) of handwheel (47).
4. the straight distance power-driven actuating as described in claim 1 or 2 or 3, is characterized in that: indicating piece is arranged between transmission nut and joint sleeve.
5. the straight distance power-driven actuating as described in claim 1 or 2 or 3, is characterized in that: the transmission nut outer installment extension type safety cover (20) connecting by thread with leading screw (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320503232.XU CN203453599U (en) | 2013-08-19 | 2013-08-19 | Straight-stroke electric actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320503232.XU CN203453599U (en) | 2013-08-19 | 2013-08-19 | Straight-stroke electric actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453599U true CN203453599U (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320503232.XU Expired - Lifetime CN203453599U (en) | 2013-08-19 | 2013-08-19 | Straight-stroke electric actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453599U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653848A (en) * | 2015-02-13 | 2015-05-27 | 浙江澳翔自控科技有限公司 | Switch type torque adjusting mechanism of multi-turn electric actuator |
| CN105822812A (en) * | 2016-05-27 | 2016-08-03 | 浙江澳翔自控科技有限公司 | Linear motion electric actuator |
| CN105822813A (en) * | 2016-05-27 | 2016-08-03 | 浙江澳翔自控科技有限公司 | Linear motion electric actuator |
| CN108394393A (en) * | 2018-05-03 | 2018-08-14 | 吉林大学 | A kind of electric booster braking system of large transmission ratio |
| CN108443566A (en) * | 2018-04-28 | 2018-08-24 | 天津祥嘉流体控制系统有限公司 | A kind of underwater valve actuator |
| CN109323037A (en) * | 2018-11-14 | 2019-02-12 | 上海孚因流体动力设备股份有限公司 | A kind of angle variable instruction dish structure |
| CN109386644A (en) * | 2018-11-14 | 2019-02-26 | 上海孚因流体动力设备股份有限公司 | A kind of seperated mechanism that actuator aperture is accurately detected and indicated |
| CN110005853A (en) * | 2019-01-22 | 2019-07-12 | 江苏远望仪器集团有限公司 | Exempt from suitching type manual and electric butterfly valve executing agency |
| CN110375104A (en) * | 2018-04-13 | 2019-10-25 | 浙江三花智能控制股份有限公司 | Motor-driven valve |
-
2013
- 2013-08-19 CN CN201320503232.XU patent/CN203453599U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653848A (en) * | 2015-02-13 | 2015-05-27 | 浙江澳翔自控科技有限公司 | Switch type torque adjusting mechanism of multi-turn electric actuator |
| CN105822812A (en) * | 2016-05-27 | 2016-08-03 | 浙江澳翔自控科技有限公司 | Linear motion electric actuator |
| CN105822813A (en) * | 2016-05-27 | 2016-08-03 | 浙江澳翔自控科技有限公司 | Linear motion electric actuator |
| CN105822812B (en) * | 2016-05-27 | 2018-09-14 | 浙江澳翔自控科技有限公司 | A kind of straight distance power-driven actuating |
| CN105822813B (en) * | 2016-05-27 | 2018-10-09 | 浙江澳翔自控科技有限公司 | A kind of straight distance power-driven actuating |
| CN110375104A (en) * | 2018-04-13 | 2019-10-25 | 浙江三花智能控制股份有限公司 | Motor-driven valve |
| CN108443566A (en) * | 2018-04-28 | 2018-08-24 | 天津祥嘉流体控制系统有限公司 | A kind of underwater valve actuator |
| CN108394393A (en) * | 2018-05-03 | 2018-08-14 | 吉林大学 | A kind of electric booster braking system of large transmission ratio |
| CN109323037A (en) * | 2018-11-14 | 2019-02-12 | 上海孚因流体动力设备股份有限公司 | A kind of angle variable instruction dish structure |
| CN109386644A (en) * | 2018-11-14 | 2019-02-26 | 上海孚因流体动力设备股份有限公司 | A kind of seperated mechanism that actuator aperture is accurately detected and indicated |
| CN109323037B (en) * | 2018-11-14 | 2024-05-07 | 上海孚因流体动力设备股份有限公司 | Changeable angle indicating disc structure |
| CN110005853A (en) * | 2019-01-22 | 2019-07-12 | 江苏远望仪器集团有限公司 | Exempt from suitching type manual and electric butterfly valve executing agency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201802 Shanghai City, Jiading District Nanxiang Town Branch Shing Road No. 598 Building 2, 1 floor, 3 floor, B District 2 building Patentee after: FLOWINN (SHANGHAI) FLUID POWER EQUIPMENT CO.,LTD. Address before: 201802 Shanghai City, Jiading District Nanxiang Town Branch Shing Road No. 598 Building 2, 1 floor, 3 floor, B District 2 building Patentee before: FLOWINN (SHANGHAI) INDUSTRIAL Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |