CN1789770A - Electric/manual mode switching device for electric actuator for opening and closing valve - Google Patents
Electric/manual mode switching device for electric actuator for opening and closing valve Download PDFInfo
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- CN1789770A CN1789770A CN 200410098861 CN200410098861A CN1789770A CN 1789770 A CN1789770 A CN 1789770A CN 200410098861 CN200410098861 CN 200410098861 CN 200410098861 A CN200410098861 A CN 200410098861A CN 1789770 A CN1789770 A CN 1789770A
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Abstract
This invention discloses one valve switch electrical execution structure electrical and handle mode conversion device, which has one whorl bar connected to the motor inside machine and its secondary whorl bar is set to the same axis of the handle axis; the secondary whorl bar is set between the one whorl wheel and fixed clutch covered on the said mobile clutch and its outside upper and down clutch cover; contract spring on the handle axis fixed and spring on the connection column.
Description
Technical field
The invention relates to a kind of conversion equipment, be the manner of execution of the electric actuator used about a kind of control valve and air door open and close specifically, by the pulling handwheel, realization is from the conversion of electric model dynamic model formula in one's hands, when motor rotates, be transformed into the device of the electric actuator electric/manual mode conversion of electric model automatically.In other words, utilize exactly and be exposed to extra-organismal operation handwheel, realize the conversion of electric actuator that control valve and air door open and close use from electric model dynamic model formula in one's hands.Be pulled outwardly and start to take turns, electric actuator is transformed into manual mode; Electric motor starting, electric actuator are transformed into electric model automatically.
Prior art
In general, butterfly valve, ball valve and air door, the action of the open and close controller-electric actuator of this revolving meber of picture is to be controlled by the electrical signal of outside input, this electrical signal is transferred to electric actuator by microswitch usually, makes electric actuator realize electronic in about 90 ° of scopes of revolving mebers such as valve or manually open or close.
In addition; electric actuator utilizes the self-locking performance of worm gear, worm screw to avoid the reversal phenomenon of system; electric/manual conversion equipment, excess load and overcurrent protective device are housed also, prevent the heater of condensation and moisture, thereby guaranteed that electric actuator always is in best operating condition.Wherein, the electric/manual conversion equipment makes the open and close of revolving mebers such as valve to select between motor power and manual working.When the motor of electric actuator was connected power supply, system was transformed into electric model automatically under manual mode.Fig. 1 utilizes handle to realize that electric/manual switches, the assembling schematic representation of the electric/manual conversion equipment of the electric actuator under manual state in the prior art, Fig. 2 and Fig. 3 are the partial views of the electric/manual conversion equipment of the electric actuator among Fig. 1.
As Fig. 1, Fig. 2 and shown in Figure 3 is built in body 10 (not shown) and directly is connected with system dynamic source motor 20 with a worm screw 30 within the handwheel cover 11, directly obtains rotary motive power from motor.
As supporting base, the outside is connected with handwheel 40 hand wheel shaft 60 with handwheel cover 11, and closed coupling piece 50 is equipped with in inside.
A worm gear 90 is installed in hand wheel shaft 60 and is arranged on same the secondary worm shaft 80 on the central axis.
No. one time worm gear 90 is installed on the secondary worm shaft 80, and can be around secondary worm shaft 80 rotation, but it passes over motor 20 by dynamic clutch piece 100, spline 82 by worm screw 30 transmission of power is given the secondary worm tooth 81 on the secondary worm shaft 80.
But dynamic clutch piece 100 is installed between worm gear 90 and the fixed clutch piece 50, and can moving axially along secondary worm shaft 81.
Transfer handle 110, torsion spring 150, supporting foot 140 etc. constitute shift fork group 120, and be installed on the body 10, and can turn round, thereby but drive dynamic clutch piece 100 is mobile vertically, with fixed clutch piece 50 or worm gear 90 engagements.110 of shift fork group 120 and transfer handles are connected and fixed with bolt 190, but shift fork group 120 two side legs 121 spacings can hold dynamic clutch piece 100, an outstanding little axle 122 is all arranged on the two side legs 121, but this outstanding axle 122 embeds in the annular groove 104 of dynamic clutch piece 100, and the outside of a batter 121 connects supporting foot 142 with bearing pin 123.
The shaft head 30 of a worm screw 30 enters handwheel cover 11 sealed space, and supports with body 10, and big end directly is connected with motor 20, and rotates simultaneously with motor shaft, thereby passes through the engagement transmitting torque of a worm tooth 31 and a worm gear 30.
The inner side surface of fixed clutch piece 50 has a pair of symmetrical engaging tooth 51, and indoor design has and can go into the spring seat 52 of pressure spring 130 by seat.
The center of center of secondary worm screw 81 and hand wheel shaft 60 is coaxially set, and its spacing is provided with lucky placement pressure spring 130.The secondary worm tooth 81 and the secondary worm shaft 80 that are meshed with secondary worm gear 70 are integrally formed, and an end is processed with spline 82, but can drive 100 interlocks of dynamic clutch piece.
A worm gear 90 is installed in the axial region 80 of secondary worm screw 81, is Spielpassung, and No. one time worm gear 90 is meshed with a worm screw 30, but the one side is processed with a pair of symmetrical engaging tooth 91 with dynamic clutch piece 100 corresponding sides.
But the spline 82 part key connecting of dynamic clutch piece 100 and secondary worm screw 81 can move axially, and transmit rotary motive power.Bi-side are processed with and engaging tooth 51,91 corresponding engaging tooths 101,103, and cylindrical is processed with annular groove 104.
But in the space 52 between dynamic clutch piece 100 and the fixed clutch piece 50 pressure spring 130 is installed.
In use, if want to adopt manual mode to carry out valve open and close operation, earlier transfer handle 110 is placed into manual position such as manual state figure (Fig. 1).At this moment, the shift fork group 120 that is fixed in the transfer handle 110 is also rotated thereupon, but and make the engaging tooth 51 of dynamic clutch piece 100 and fixed clutch piece 50 by bearing pin 122,102 are meshed, thereby but the rotary motive power of fixed clutch piece 50 is passed to dynamic clutch piece 100, but dynamic clutch piece 100 passes to secondary worm screw 81 by spline 102,82 with rotary motive power.At this moment, but the opposite side engaging tooth 103 of dynamic clutch piece 100 separate with the engaging tooth 91 of a worm gear 90, can't transferring power, and pressure spring 130 is in compressive state.
Under this state, rotate handwheel 40, the rotary motive power pass order is as follows:
But handwheel 40 → hand wheel shaft 60 → fixed clutch piece 50 → dynamic clutch piece 100 → secondary worm screw 81 → secondary worm gear 70, thereby realization is to the manual open and close of valve.At this moment, a worm gear 90 that is installed on the secondary worm screw 81 remains static.
Otherwise, if want when manual mode is transformed into electric model, need not to operate transfer handle 110, as long as give motor 20 connection power supplys, because of the end portion supports of supporting foot 140 side at a worm gear 90, and the side of worm gear 90 is processed with serration, when worm gear 90 rotated, serration was to the supporting foot transmitting torque, and the rotation of a worm gear 90 will be swept down supporting foot 140 automatically, under the effect of pressure spring 130, get back to electric model automatically.
Under manual state, connect power supply for motor 20, the revolution of motor 20 drives a worm gear 90 rotations that are installed on the secondary worm screw 81, supporting foot 140 is swept down in the revolution of a worm gear 90, supporting foot 140 no longer plays a supportive role under the effect of torsion spring 150, thereby the effect of shift fork group is removed.Meanwhile, under the effect of pressure spring 130, but dynamic clutch piece 100 is rebounded engaging tooth 91 engagements of its engaging tooth 103 and a worm gear 90.The power of motor 20 is pressed thereupon: a worm screw (30) → No. time worm gear (90) but → sequence delivery of dynamic clutch 100 → secondary worm screw 81 → secondary worm gear 70, thereby realize the electric model of actuator.At this moment rotate handwheel 40, but, can only be fixed clutch piece 50 and handwheel 40 idle running, can't drive secondary worm screw 80 and rotate because dynamic clutch piece 100 and fixed clutch piece 50 are in separated state.
But the transfer handle of this structure is exposed to outside the body, and operator or other people are being run into unintentionally, produces faulty operation; Simultaneously, component count is many, packaging technology is complicated, has improved the manufacture cost of product.
Summary of the invention
This is to have overcome deficiency of the prior art, provides a kind of simple in structure, is not prone to valve the open and close electric model of electric actuator and the conversion equipment between the manual mode of misoperation.
In order to solve the technical problem of above-mentioned existence, valve open and close of the present invention are adopted following technological scheme with the electric/manual mode switching device of electric actuator, and it includes:
Casing (10);
A worm screw (30), a described worm screw (30) are arranged in the casing (10), link to each other with motor (20) and transmit rotary motive power;
Hand wheel shaft (60), described hand wheel shaft (60) are arranged in the casing (10), and the outer end connects the handwheel (40) that is positioned at outside the casing (10);
Fixed clutch piece (50), described fixed clutch piece (50) is fixedlyed connected with the inner of described hand wheel shaft (60);
Secondary worm screw (80), described secondary worm screw (80) are arranged in the casing (10), and described secondary worm screw (80) is arranged on same the central axis with described hand wheel shaft (60);
Secondary worm gear (70), described secondary worm gear (70) is meshed with described secondary worm screw (80);
A worm gear (90), a described worm gear (90) is installed in secondary worm screw (80), and with secondary worm screw (80) Spielpassung; A described worm gear (90) is meshed with a worm screw (30) and transmits motor (20) rotary motive power;
But dynamic clutch piece (100), but described dynamic clutch piece (100) can be arranged on the secondary worm screw (80) with moving axially, and be positioned between a worm gear (90) and the fixed clutch piece (50);
Pressure spring (130), described pressure spring (130) are set in hand wheel shaft (60) but go up and be positioned between dynamic clutch piece (100) and the fixed clutch piece (50);
But be set in the upper and lower divergence type clutch sleeve (200) of described dynamic clutch piece (100) and fixed clutch piece (50) excircle, described clutch sleeve (200) has the fixed base (208) of fixedlying connected with fixed clutch (50), but described dynamic clutch piece (100) has circumferential annular groove (104);
Be connected to supporting foot (220) on the described clutch sleeve (200) by attachment post (210), described attachment post (210) begin to crop up (211) but be embedded in the annular groove (104) of dynamic clutch piece (100); Described supporting foot (220) can described attachment post (210) be the axle rotation, during manual mode, nip off a worm gear (90) but and transmission of power between the dynamic clutch piece (100);
Be installed on the attachment post (210), when manual mode, provide support the axially support of pin (220), separate a worm gear (90) but and the torsion spring (150) of the required elastic force of dynamic clutch piece (100) along secondary worm screw (81).
Preferably, described attachment post (210) can be bolt or screw rod.
Preferably, the outer circumferential sides of described clutch sleeve (200) has upright pawl (201); One end of described supporting foot (220) has upright pawl (221); Described upright pawl (201) is formed the leg of described torsion spring (150) with described upright pawl (221).
Preferably, an end of described supporting foot (220) has plane of inclination (222) upwards, and the terminal of plane of inclination (222) has the recess (223) that is suitable for the tooth portion interlock of a worm gear (90).
Preferably, described clutch sleeve (200) forms by upper and lower cover (202,203) is equipped, and the mating face (204) of upper and lower cover (202,203) is the plane of substantially horizontal.
Preferably, the horizontal slot (12) that described handwheel cover (11) has, the mating face (204) of described clutch (200) is embedded in the horizontal slot (12).
As mentioned above, the present invention is that the pattern conversion regime of electric actuator that the control valve open and close are used changes the mode of the basic handwheel of pulling into by handle type, and being pulled outwardly the distance of drawing back does not have fixed constraints, about 5～10mm, and simple structure, easy to operate.When converting manual mode to, but moving by clutch sleeve of dynamic clutch piece drives, clutch sleeve is in moving process, because the leading role of the outer, both sides of its horizontal joint and two horizontal slots of handwheel cover, the position remains level, but by the engaging tooth engagement, give secondary worm screw and secondary worm gear by the transmission of power that hand wheel shaft passes between fixed clutch piece and the dynamic clutch piece, realize manually-operable safely handwheel.Certainly, realize manually-operable, also be unable to do without supporting foot and be supported on worm gear, and maintenance and secondary worm shaft be to consistent, but dynamic clutch piece and a worm gear are separated.
Secondly, an end of the supporting foot among the present invention is designed to the plane of inclination, and the end of plane of inclination is fluted, and during manual mode, this groove is supported on the flank of tooth of a worm gear; During electric model, this groove under the drive of a worm-gear tooth by being swept down, but the dynamic clutch piece under the effect of pressure spring, separate with the fixed clutch piece, with a worm gear engagement, realization electric model.
Once more, the engaging tooth on worm gear is processed into the concave arc groove, but the engaging tooth of corresponding dynamic clutch piece is processed into convex arc, and guarantees their coaxality, makes engagement and separates easily to have prevented action error.
At last, clutch sleeve divides upper and lower two-part, and upper and lower cover has been symmetrical arranged supporting foot respectively, has guaranteed the correct maintenance of electronic or manual state.
Meanwhile, not only, reduced misoperation and the damaged worry of quilt that external impact causes, and, reduced cost of production because the minimizing of amount of parts has greatly reduced artificial and the raw material loss owing to cancelled the mode switch handle.
The point of contact of a supporting foot of the present invention and a worm gear changes the side of tooth into by the gear side, has eliminated the damage of supporting foot to the gear side.
Description of drawings
Fig. 1: be the horizontal sectional view of realizing the device of pattern conversion in the expression prior art by handle.
Fig. 2: be worm gear and worm screw vertical section figure partly in the presentation graphs 1.
Fig. 3: but be dynamic clutch piece and shift fork vertical section figure partly in the presentation graphs 1.
Fig. 4: be the horizontal sectional view of expression the present invention when electric model.
Fig. 5: be the horizontal sectional view of expression the present invention when manual mode.
Fig. 6: be the vertical section figure of presentation graphs 4 when electric model.
Fig. 7: be the horizontal sectional view of presentation graphs 5 when manual mode.
Fig. 8 a: be that expression the present invention has omitted the schematic representation behind the casing when electric model.
Fig. 8 b: be that expression the present invention has omitted the schematic representation behind the casing when manual mode.
Fig. 9: the action schematic representation that is expression the present invention supporting foot when manual mode.
Figure 10: be the schematic representation of expression upper and lower divergence type clutch sleeve of the present invention when separating.
[major component symbol description among the figure :]
10: body, 11: handwheel cover, 12: the guiding groove on the handwheel cover, 20: motor, 30: worm shafts, 31: worm tooths, 40: handwheel, 50: fixed clutch piece, 51: engaging tooth, 60: hand wheel shaft, 70: secondary worm gear, 80: the secondary worm shaft, 81: secondary worm tooth, 82: spline, 90: worm gears, 91: engaging tooth, 100: but the dynamic clutch piece, 102: spline, 102/103: engaging tooth, 104: annular groove, 130: pressure spring, 150: torsion spring, 160/170: pin, 200: clutch sleeve, 201: upright pawl, 202: overlap 203 on the clutch: clutch is trapped, 204: clutch sleeve horizontal part, 210: bolt axis, 211: begin to crop up, 212: bolt thread portion, 220: supporting foot, 221: vertical bend, 222: plane of inclination, 223: recess
Embodiment
Below be detailed description of the invention, with the part of prior art structure with identical symbolic representation, repeat specification is omitted.
Fig. 4 be with Fig. 1 equal state under, the horizontal sectional view under the electric model of the present invention, Fig. 5 are the horizontal sectional views under the manual state, Fig. 6 is the vertical section figure of Fig. 4, Fig. 7 is the vertical section figure of Fig. 5.
A worm screw 30 extend into the inner space tool of electric actuator handwheel cover 11 sealings, directly is connected with motor 20, and can be by driving running with motor shaft.
Directly processed worm tooth 81 on the secondary worm shaft 80, secondary worm shaft 80 is arranged on same the center line with hand wheel shaft 60, is meshed with secondary worm gear 70.
But fixed clutch piece 50 and dynamic clutch piece 100 between pressure spring 130 is installed, pressure spring is set on the hand wheel shaft 60; But pressure spring is the power of providing support that resets of handwheel 40 and dynamic clutch piece 100.
But dynamic clutch piece 100 is installed between worm gear 90 and the fixed clutch piece 50, can be along the axial move left and right of secondary worm screw 81.
But divergence type clutch sleeve 200 entangles dynamic clutch piece 100 and fixed clutch piece 50 up and down, when pulling handwheel 40 is transformed into manual mode with actuator, can be under the guiding of the guiding groove 12 that is fixed on the handwheel cover 11 on the body 10, move along the axle direction of secondary worm screw 81.
Supporting foot 220 serves as that axle can rotate with screw thread 212 parts of bolt shank 210, and the position under the manual mode is in the direction with secondary worm screw 81 parallel to an axiss, thereby but has nipped off transmission of power between worm gear 90 and the dynamic clutch piece 100.
When assembling, in the through hole 206 of the screw section 212 clutches cover 200 of bolt axis 210, assemble supporting foot 220 and torsion spring 150 again, lock with nut.Under manual mode, but torsion spring 150 is nipped off transmission of power between worm gear 90 and the dynamic clutch piece 100 power that provides support for supporting foot 220.The front end periphery of fixed clutch piece 50 is a bead part 53, and the bending end face 205 of it and clutch sleeve 200 is inconsistent, plays mobile position-limiting action.Upright pawl 201 on the outer surface of clutch sleeve 200 is legs of torsion spring 150.Supporting foot 220 is eliminated the moment of torsion of sense of rotation by torsion spring 150.
Fig. 8 a is the partial view of clutch sleeve of the present invention under electric model, and Fig. 8 b is the partial view of the present invention under manual mode, and Fig. 9 is the schematic representation of expressing the clutch sleeve action.The hand wheel shaft 60 that transmits handwheel 40 power enters in the body 10 of fixing handwheel cover 11, as shown in Figure 4 to 7.Clutch sleeve 200 is by last cover 202 and trap and 203 form, but it entangles dynamic clutch piece 100 and fixed clutch piece 50 in the periphery, and accept handwheel 40 and transmit the power of coming by hand wheel shaft 60, upper and lower cover 202 at clutch sleeve 200,203 peripheries, the symmetrical upright pawl 201 in position is arranged respectively, it constitutes the leg that is installed in torsion spring 150 two ends on the bolt axis 210 with an end bending part 221 of supporting foot 220, but a side of upper and lower cover 203,203 has the flap section 207 in the annular groove 104 that is embedded into dynamic clutch respectively.
The front end of supporting foot 220 has an outside plane of inclination 222, the front end edge length direction of plane of inclination 222 has a recess 223, it is meshed with the tooth portion of a worm gear 90, and the other end of supporting foot 220 curves upright pawl 221, and is corresponding with upright pawl 201 (torsion spring leg).
Figure 10 is the decomposition view of clutch sleeve 200 of the present invention, and clutch sleeve 200 is by last cover 202 and trap and 203 assemble upper and lower cover 202,203 mating face 204 is the plane, and be provided with location retaining, an end machining hole on mating face 204, the other end machining screw, upper and lower cover 202,203 the hole and the position of screw thread are staggered corresponding, will guarantee centre distance simultaneously and to the degree of symmetry at center, assemble upper and lower cover 202,203, be exactly a complete clutch sleeve.In the time of in being assembled to actuator, the outer on mating face 204 extend in the guiding groove 12 of handwheel cover 11, as shown in Figure 4 and Figure 5, when move left and right, plays the effect of feather key.The flap section 205 of upper and lower cover 202,203 is stuck on the flange 53 of fixed clutch piece 50.Clutch sleeve 200 is fixedlyed connected by supporting seat 208 to overlap 50 with fixed clutch.On, have upright pawl 201 on the circular arc portion of trapping respectively and make bolt axis 210 screw section 212 pass through hole 206.One side of upper and lower clutch sleeve is respectively equipped with a flap section 207, when but clutch sleeve entangles fixed clutch piece 50 and dynamic clutch 100, but flap section 207 is stuck in the annular groove 104 of dynamic clutch 100, when pulling handwheel 40, clutch sleeve 200 moves by the movable clutch sleeve 100 of 211 drives of begining to crop up of flap section 207 and bolt axis 210.
The present invention with this structure under the electric model shown in Fig. 4, Fig. 6, Fig. 8 a, with handwheel 40 outwards pulling shown in Fig. 5, Fig. 7, Fig. 8 b, make handwheel 40 and handwheel cover 11 D that stands away.Support that by handwheel cover 11 the other end of hand wheel shaft 60 installs and fixes clutch piece 50 with the hand wheel shaft 60 that handwheel 40 fuses.Supporting foot 200 passes bolt hole 206 by bolt 210 and connects the divergence type clutch sleeve 200 that entangles fixed clutch piece 50, but begining to crop up of bolt 210 embeds in the annular groove 104 of dynamic clutch piece 100.When the user in order to be transformed into manual mode from electric model, be pulled outwardly and start to take turns at 40 o'clock, as Fig. 5 and shown in Figure 7, the hand wheel shaft 60 that fuses with handwheel 40 also outwards moves simultaneously, the clutch sleeve 200 that entangles the fixed clutch piece 50 that rotates simultaneously with hand wheel shaft 60 also will move to position P2 from position P1, as shown in Figure 4.At this moment, the horizontal joint 204 also will move to the P2 position as shown in Figure 5, leave distance D between handwheel 40 and the handwheel cover 11.In case realization initial movable, the position of supporting foot 220 just will be transformed into solid line position such as Fig. 8 b, shown in Figure 9 from dotted line position, and axially be consistent.This is because supporting foot 220 has been subjected to the power from torsion spring 150, but spur the moment that produces the space between the dynamic clutch piece 100 that handwheel 40 drives worm gear 90 and clutch sleeve 200 the user, the position of supporting foot 220 is transformed into and secondary worm screw 81 axial consistent manual mode positions, and is fixed up.Though initial movable need spur handwheel,, the distance D that is moved be by supporting foot 220 under the effect of torsion spring 150 power, after the conversion of the axial position of secondary worm screw 81, its recess 223 is bitten and is decided after the tooth portion of a worm gear 90.Simultaneously, owing on the upper and lower sleeve 202,203 of clutch sleeve 200, supporting foot 220 is housed respectively, makes and keep in balance at the support force of two directions.In this state, rotate handwheel 40, the fixed clutch piece 50 that links to each other with hand wheel shaft 60 with bearing pin 170 also will rotate thereupon.But be meshed by engaging tooth 51,101 between fixed clutch piece 50 and the dynamic clutch piece 100, thereby but drive dynamic clutch piece 100 and rotate simultaneously.But dynamic clutch piece 100 drives secondary worm screw 81 by spline 82,102, and secondary worm screw 81 drives secondary worm gear 70 by the tooth engagement, thereby realizes the manual open and close control to valve.
Connect power supply under manual state, the revolution of motor 20 makes a worm screw 30 that directly links to each other with motor shaft drive a worm gear 90 that is engaged with and turns round.Because supporting foot 220 is to be supported on the flank of tooth of a worm gear 90, when a worm gear 90 rotated, must drive supporting foot 220 was that rotate at the center with bolt axis 210, in Fig. 9, forwards dotted line position to from solid line position.Meanwhile, but pressure spring 130 promotes dynamic clutch piece 100 and drives clutch sleeve 200, hand wheel shaft 60, handwheel 40, and the state from Fig. 7 to Fig. 6, the state from Fig. 5 to Fig. 4, the state from Fig. 8 b to Fig. 8 a move simultaneously to the direction near a worm gear 90.At this moment, engaging tooth 51,102 separates, engaging tooth 103,91 engagements, and the power of motor 20 passes to worm gear 90 No. one time by a worm screw, No. one time but worm gear 90 drives valve for transmission of power secondary worm gear 70 and rotates, realize electric model by dynamic clutch piece 100, secondary worm screw 81.(power transmission route at this moment is: but 91 → worm gear 90 → dynamic clutch of 20 → worm screws of motor piece, 100 → secondary worm screw, 81 → secondary worm gear, 70 → valve.Because but the engaging tooth 50,102 between dynamic clutch piece 100 and the fixed clutch piece 50 is separated from each other, power can't pass to hand wheel shaft.
Certainly, for realize from electronic to manually, from manually to the conversion of electric model, be indispensable but clutch sleeve 200 is stuck in the annular groove of dynamic clutch piece 100 104 the fixed base 208 of begining to crop up 211, clutch sleeve 200 and fixed clutch piece 50 being fixed together.
Claims (5)
1. valve open and close comprise with the electric/manual mode switching device of electric actuator:
Casing (10);
A worm screw (30), a described worm screw (30) are arranged in the casing (10), link to each other with motor (20) and transmit rotary motive power;
Hand wheel shaft (60), described hand wheel shaft (60) are arranged in the casing (10), and the outer end connects the handwheel (40) that is positioned at outside the casing (10);
Fixed clutch piece (50), described fixed clutch piece (50) is fixedlyed connected with the inner of described hand wheel shaft (60);
Secondary worm screw (80), described secondary worm screw (80) are arranged in the casing (10), and described secondary worm screw (80) is arranged on same the central axis with described hand wheel shaft (60);
Secondary worm gear (70), described secondary worm gear (70) is meshed with described secondary worm screw (80);
A worm gear (90), a described worm gear (90) is installed in secondary worm screw (80), and with secondary worm screw (80) Spielpassung; A described worm gear (90) is meshed with a worm screw (30) and transmits motor (20) rotary motive power;
But dynamic clutch piece (100), but described dynamic clutch piece (100) can be arranged on the secondary worm screw (80) with moving axially, and be positioned between a worm gear (90) and the fixed clutch piece (50);
Pressure spring (130), described pressure spring (130) are set in hand wheel shaft (60) but go up and be positioned between dynamic clutch piece (100) and the fixed clutch piece (50);
It is characterized in that: also comprise:
Upper and lower divergence type clutch sleeve (200), described upper and lower divergence type clutch sleeve (200) but be set in described dynamic clutch piece (100) and fixed clutch piece (50) excircle on, described clutch sleeve (200) has the fixed base (208) of fixedlying connected with fixed clutch (50), but described dynamic clutch piece (100) has circumferential annular groove (104);
Supporting foot (220), described supporting foot (220) is connected on the described clutch sleeve (200) by attachment post (210), described attachment post (210) but have be embedded into dynamic clutch piece (100) annular groove (104) in begin to crop up (211); Described supporting foot (220) can described attachment post (210) be the axle rotation, during manual mode, nip off a worm gear (90) but and transmission of power between the dynamic clutch piece (100);
Torsion spring (150), described torsion spring (150) are installed on the attachment post (210), when manual mode, provide support pin (220) along the axially support of secondary worm screw (81) with separate a worm gear (90) but and the required elastic force of dynamic clutch piece (100).
2. the electric/manual conversion equipment of the electric actuator that control valve open and close as claimed in claim 1 are used is characterized in that:
Described attachment post (210) is bolt or screw rod.
3. the electric/manual conversion equipment of the electric actuator that control valve open and close as claimed in claim 1 are used is characterized in that:
The outer circumferential sides of described clutch sleeve (200) has upright pawl (201);
One end of described supporting foot (220) has upright pawl (221);
Described upright pawl (201) is formed the leg of described torsion spring (150) with described upright pawl (221).
4. the electric/manual conversion equipment of the electric actuator that control valve open and close as claimed in claim 1 are used is characterized in that:
One end of described supporting foot (220) has plane of inclination (222) upwards, and the terminal of plane of inclination (222) has the recess (223) that is suitable for the tooth portion interlock of a worm gear (90).
5. the electric/manual conversion equipment of the electric actuator that control valve open and close as claimed in claim 1 are used is characterized in that:
Described clutch sleeve (200) is assembled by upper and lower cover (202,203), and upper and lower cover (202,203) has the mating face (204) of level respectively;
Described handwheel cover (11) has horizontal slot (12), and the mating face (204) of described clutch (200) is embedded in the horizontal slot (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410098861 CN1789770A (en) | 2004-12-13 | 2004-12-13 | Electric/manual mode switching device for electric actuator for opening and closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410098861 CN1789770A (en) | 2004-12-13 | 2004-12-13 | Electric/manual mode switching device for electric actuator for opening and closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1789770A true CN1789770A (en) | 2006-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410098861 Pending CN1789770A (en) | 2004-12-13 | 2004-12-13 | Electric/manual mode switching device for electric actuator for opening and closing valve |
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| Country | Link |
|---|---|
| CN (1) | CN1789770A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101173725B (en) * | 2007-09-26 | 2010-06-02 | G20工程有限公司 | Piston type ratio regulating valve control device and ratio regulating valve using the same |
| CN105402466A (en) * | 2015-12-01 | 2016-03-16 | 江苏兆胜空调有限公司 | Novel remote control method of pneumatic air valve |
| CN103411011B (en) * | 2013-07-15 | 2016-06-08 | 济南大学 | A kind of Intelligent straight-stroke electric topworks |
| CN107208824A (en) * | 2015-02-14 | 2017-09-26 | 费斯托股份有限两合公司 | Valve gear |
| CN108138987A (en) * | 2015-10-01 | 2018-06-08 | 埃迈海卓尼克工程国际有限责任公司 | For the actuator of control valve |
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2004
- 2004-12-13 CN CN 200410098861 patent/CN1789770A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173725B (en) * | 2007-09-26 | 2010-06-02 | G20工程有限公司 | Piston type ratio regulating valve control device and ratio regulating valve using the same |
| CN103411011B (en) * | 2013-07-15 | 2016-06-08 | 济南大学 | A kind of Intelligent straight-stroke electric topworks |
| CN107208824A (en) * | 2015-02-14 | 2017-09-26 | 费斯托股份有限两合公司 | Valve gear |
| CN107208824B (en) * | 2015-02-14 | 2019-07-30 | 费斯托股份有限两合公司 | Valve gear |
| CN108138987A (en) * | 2015-10-01 | 2018-06-08 | 埃迈海卓尼克工程国际有限责任公司 | For the actuator of control valve |
| CN108138987B (en) * | 2015-10-01 | 2020-01-17 | 埃迈海卓尼克工程国际有限责任公司 | Actuator for control valve |
| US10982784B2 (en) | 2015-10-01 | 2021-04-20 | Imi Hydronic Engineering International Sa | Actuator for controlling a valve |
| CN105402466A (en) * | 2015-12-01 | 2016-03-16 | 江苏兆胜空调有限公司 | Novel remote control method of pneumatic air valve |
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