CN1657812A - Drive device of rotary valve - Google Patents
Drive device of rotary valve Download PDFInfo
- Publication number
- CN1657812A CN1657812A CN 200410069484 CN200410069484A CN1657812A CN 1657812 A CN1657812 A CN 1657812A CN 200410069484 CN200410069484 CN 200410069484 CN 200410069484 A CN200410069484 A CN 200410069484A CN 1657812 A CN1657812 A CN 1657812A
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- Prior art keywords
- projection
- clutch
- input
- drive unit
- clutch device
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- Mechanically-Actuated Valves (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention provides a power transmission device. When an input exceeding input limiting value is applied, the device will plug clutch for disconnecting the input transmission between manual driving source and gear transmission device to prevent the transmission of the force which exceeds input limiting value thereby preventing damage on the device caused by applying excessive force, meanwhile, if the input is lower than the limiting value, the invention will automatically recover force transmission in order to drive valve. The invention is characterized in that: operation disk is mounted on operation shaft of the manual actuator for driving revolving valve by the clutch device, when an input exceeding the limiting value is applied, the invention will disconnect the clutch device to prevent the input transmitting to the operation shaft, and if the input is lower than the limiting value, the invention will connect the clutch device, wherein the connection state of the clutch device is operated by the balance of elastic force of spring and divorce force leaded by protrudent slant angle, wherein the protuberance is arranged at contact face between two clutch members.
Description
Technical field
The present invention relates to a kind of drive unit of rotary valve, in more detail, relate to the clutch device of the transmission that comprises interrupted driving force, when the driving force more than the input certain value, disconnect the transmission of driving force, to prevent because of excessively importing the drive unit of the device damage that causes.
Background technique
In the past, drive unit as rotary valves such as butterfly valve, ball valves, with geal conduction device between by manual rotating dashboard and valve rod, this geal conduction device is made up of worm and worm wheel, the drive unit of rotary valve that is carried out the switching of valve by manual drives power rotation valve rod is known, for example is disclosed on No. 3081820 communique of Japan Patent etc.
In so known drive unit, preferably using by the output torque of the geal conduction device that manually brings with in order to drive under the state that valve body is complementary from the valve driving torque of geal conduction device output, but, in fact, usually big to the required valve driving torque of the torque ratio of geal conduction device input.And input source is in the manual operating device of manpower, and the size of input torque has individual differences significantly, additional sometimes excessive power.Therefore, has the danger that the drive unit that contains dashboard, geal conduction device, housing etc. is brought damage.
Particularly, be accompanied by the requirement of resource-savingization in recent years, cost degradation, reduction for the unnecessary intensity of the miniaturization that realizes drive unit and material, the output critical value of drive unit is used near the valve driving torque as far as possible, therefore indicate the input limits value, but, in the scene of using valve, differ and observe the input limits value surely, often add the driving force that surpasses the input limits value and the accident that damaged device takes place.
No. 3081820 communique of [patent documentation 1] Japan Patent.
Summary of the invention
This invention provides a kind of power transmission, when adding the input that surpasses the input limits value, the clutch device that disconnects the transmission of input is plugged between manual drives source and the geal conduction device, stop the transmission of the power that surpasses the input limits value, prevent the damage of the device that causes because of additional excessive power, simultaneously, under situation about being input as below the aforementioned limiting value, the transmission of restoring force automatically can be carried out the driving of valve.
Feature of the present invention is, valve at rotary valve drives with on the control lever shaft of manual actuator, pass through clutch device, dashboard is installed, when the input more than the additional specified value by dashboard, is removed the connection of clutch device, make input not be transferred on the control lever shaft, simultaneously, input value makes clutch device be in coupled condition when specified value is following.Clutch device intermittently be the elastic force by spring and undertaken that this projection is darted on the surface of contact of two clutch members by the disengaging equilibrium of forces that the tilt angle of projection causes.
Clutch device is characterised in that, this clutch device is made of driven side clutch member and master end clutch member, this driven side clutch member is connected on the control lever shaft at gyratory directions with being integral, this master end clutch member has dashboard with being integral and ground free to rotate activity is plugged on the driven side clutch member, on the surface of contact of two clutch members, dash forward and establish at least one intermeshing projection, and two clutch members are drawn to contact direction bullet by spring.
The invention is characterized in, the tilt angle of plane of inclination that makes projection is 5～40 ° scope, make of at least over half central plane formation of the plane of inclination of projection from rising height, on this central plane, projection is meshing with each other, make the plane of inclination of projection be formed on the bi-side of projection,, all make clutch device work no matter the gyratory directions of dashboard is positive and negative.
The invention is characterized in, pressure is established the spring dead plate of spring one end,, be connected the driven side clutch member with the anticreep state from the fixed outside of master end clutch member front end at control lever shaft.
Drive unit according to rotary valve of the present invention, the clutch device of between manual control dish and geal conduction device, pegging graft, disconnect the above input torque of specified value, prevent the conduction of excessive torque, therefore can prevent because of adding the damage of the device that excessive torque causes, simultaneously, under input torque drops to situation below the specified value, immediately clutch device is automatically returned to coupled condition, thereby can carry out the transmission of driving force, work for clutch device does not need the time, and can be as the safety installations utilization.Further, only need to replace original dashboard, the clutch device of this invention is installed on the control lever shaft, just this invention can be applicable to original rotary valve.
Description of drawings
Fig. 1 is the stereogram of butterfly valve and actuator.
Fig. 2 is a plan view of having opened the state of actuator casing.
Fig. 3 is the sectional view of the relevant clutch device of this invention.
Fig. 4 is the exploded perspective view of Fig. 3.
Fig. 5 is the exploded perspective view of watching from the direction different with Fig. 4.
Fig. 6 is the plan view of projection.
Fig. 7 is the stereogram of projection.
Fig. 8 is the profile of projection.
Fig. 9 is the figure of the projections mesh of expression master end and slave end.
Figure 10 is the figure that is illustrated in the rotating state in master end among Fig. 9.
Wherein, description of reference numerals is as follows:
1 butterfly valve, 12 guide cylinders
13 of 2 valve rods insert tube
3 actuators, 14 horn-like parts
4 worm gears, 15 spring dead plates
5 worm screws, 16 bolt-inserting holes
6 control lever shafts, 17 L font grooves
7 dashboards, 18 square bar shape linking departments
8 clutch device, 19 springs
9 master end clutch members, 20 packing rings
10 driven side clutch members, 21 bolts
11 projections
Embodiment
In following detailed description preferred implementation of the present invention.This invention relates to and is used to have butterfly valve, the manual driving device of the rotary valve of rotating valve body such as ball valve, it is characterized in that, producing the manually such manual rotating device of dashboard of input, and be used between the dynamic conductive device that driving force with this slewing gear is transferred to geal conduction device on the valve rod that valve opens and closes usefulness etc., dispose the clutch device of interrupted power transmission, when the excessive driving force of transmission more than the specified value, disconnect its transmission, be used to prevent geal conduction device, gear-box, the linking department of control lever shaft and dashboard, the damage of the driving force transmitting set part of the linking department of valve rod and geal conduction device etc.In addition, it is characterized in that this clutch device automatically recovers and carry out the connection again of driving force when input drops under the following situation of specified value.In addition, the drive unit of this invention can be realized by the simple change that only needs the original dashboard of replacement to be installed on the control lever shaft, owing to do not need peculiar part or utensil or instrument, therefore, can be applicable to simply on the rotary valve that is installed on the pipe arrangement yet.
Clutch device has on the clutch member of master end and slave end, arranges and intermeshing at least one projection along rotary track.Two clutch plates are when the direction of contact often rebounds, form the inclined-plane of regulation inclined angle alpha towards the face of the gyratory directions of aforementioned projection, when the input value from the master end clutch member surpasses specified value, because the breakaway force that inclined angle alpha causes is than big to the elastic pushing pressure of clutch member, therefore, the engagement of projection is disengaged, thereby has disconnected the transmission of driving force.In addition, if input turns back to zero or below the certain value, then by elastic force pushing clutch member, therefore, recover the engagement of projection, the transmission that recovers driving force again.That is, be input as more than the certain value or certain value when following what be additional to the master end, clutch device is automatically interrupted, thereby can carry out transmission or its disconnection of driving force.Aforementioned tilt angle can only be arranged on the side of gyratory directions of projection, but by being formed on two sides, can carry out the interrupted of aforementioned clutch to positive and negative gyratory directions arbitrarily.
The clutch member in master end is by constituting with the integrally formed roughly disc-shaped component of dashboard, and ground free to rotate is movable to be plugged on the control lever shaft as the input shaft of geal conduction device.In addition, the clutch member of slave end is the disc-shaped component that combines with the rotating mode of control lever shaft one, on two opposed surface of contact of clutch member, form intermeshing projection, the engagement by this projection or break away from the connection that reaches two clutch members or disconnected.The clutch member of master end and slave end is compressed the elastic force that is arranged on two springs between the member, often advances to the direction that is in contact with one another, and aforementioned thus projection is offset to engagement.When input value surpasses certain value, produce the breakaway force that causes by inclined angle alpha, projection is moved along tilt slide, the elastic force of antagonistic spring and remove engagement makes two clutch members transfer to non-connecting state.
As Fig. 6～shown in Figure 8, projection is arranged one, preferably a plurality of for being spaced with predetermined angular θ at least along the round track that with the control lever shaft is the center, has certain length L on diametric(al), forms the narrow truncated cone of wide, the interior ambient side width of outside side width.With reference to Fig. 8, the side of projection, preferably two sides form the inclined-plane of inclined angle alpha.Be provided with in the bi-side of projection under the situation at tilt angle, be different from the opposing party's tilt angle by the tilt angle that makes a side, gyratory directions makes the input value difference relatively.Preferably 5～40 ° of inclined angle alpha.If the tilt angle is less than 5 °, the then too small disengaging that then can not reach substantial projection of breakaway force can not get the effect of clutch.In addition, if than 40 ° big, because of excessively, even produce the discomfort that small input also can make projection break away from.The number N of projection is 1～30 degree, and the interval angle θ of projection is provided by following formula, θ=N/ (2 * 360).In Fig. 8, a is the top width of projection, and b is the width of central plane, and c is the width of bottom surface.
The interval P of the projection separately of master end, slave end, the center diameter of a circle at the center of the length L by projection is under the situation of DC, can be provided by following formula.
P＝πDC(θ/360)
As Fig. 9, shown in Figure 10, in the master end, slave end jointly equally spaced disposes projection, for the engagement that makes projection, break away from easily, gap ε is set in projection.When the width of projection was b, this gap ε was preferably in the degree of 0.05～0.3b.Gap ε be arranged on projection the plane of inclination and above.In this wise, the interval P of aforementioned projection becomes the value of following formula.
P＝2×(b+ε)
Set up for the engagement and the disengaging that make aforementioned projection, the inclined angle alpha of two sides of projection is not to rise above the plectane of projection lower end, but central plane (with reference to Fig. 8) formation up and down separately from being positioned at the position of rising height more than 1/2.That is, this clutch device constitutes on half central plane of the rising height that comprises gap ε and meshes.Thereby, the inclined-plane of the angle [alpha] that forms in two sides of projection be formed on the central plane above on (h-ε), below (h) (orientation substrate of disk).In addition, the shape of the side that is caused by inclination is not radial from the radiation of plectane center, but parallel on width b with the edge line of projection on the central plane.
With interval P configuration projection.Projection needs thickness (highly), therefore, needs reference level, places on the datum plane at this edge line with projection, and this plane is called aforesaid central plane.Because projection needs the plane of inclination, so the hypothesis central plane is at the height on the plectane C (on+h) the position.Thereby, be equivalent to the root of projection on the surface of plectane C.In addition, will place above the projection from the position of central plane (h-ε).When forming projection, place different positions and width (top width, root width) the meeting difference of projection by raised edges line angle [alpha].For example, if above α placed, then the root of projection is than the wide b of top width, if α is placed root, b can narrow down above then.Independent projection can place benchmark any position, still, is keeping at interval angle θ and when disposing of projection on plectane because can not be benchmark with top or root, so with the formation benchmark of raised edges line as central plane.
When the tilt angle of projection is that α, input limits value are F, when required spring thrust was Q, clutch chimeric became following relation.Thereby, set for Q and equate as long as will push spring force.Therefore, when becoming big F1 as if input value F, breaking away from direction power according to formula (1) is Q1, because F1 is bigger than F, Q1 is bigger than Q, so clutch breaks away from.In addition, on the contrary,, then break away from direction power and become the Q2 littler than Q if input is stopped (F ≈ 0) and maybe input is made as the F2 littler than F, thus clutch by the spring return of spring to engagement.
Q≈F·sin(α+φ)·cos(α+φ) ----- (1)
F: limit input value
Q: break away from direction power
α: the tilt angle of projection
φ: the friction angle on projection inclined-plane
Embodiment 1
The drive unit that illustrates this invention is applicable to the example of butterfly valve, but the present invention is not limited to this, also can be applicable to other rotary valves such as ball valve, even also can similarly be applicable to the rotating part of the drive unit of other general valve.1 the dish valve is shown in the drawings, is connecting the manual actuator 3 that constitutes by geal conduction device in the outer end of this valve rod 2.This manual actuator 3 comprise the outer end that is connected valve rod 2 worm gear 4 and with these worm gear 4 engaged worm 5, worm screw 5 in conjunction with control lever shaft 6.On the control lever shaft 6 that the housing from actuator 3 stretches out laterally, dashboard 7 is installed by clutch device 8 of the present invention.
On master end clutch member 9, be provided with dashboard 7 integratedly, when forming cup-shaped, longitudinally be provided with the guide cylinder 12 that connects front and back at the center.The driven side clutch member heart therein vertically is provided with the axle insertion tube 13 that inserts control lever shaft 6 integratedly.The outer end inner side surface that inserts tube 13 at axle forms the bight of the horn-like part 14 of the control lever shaft 6 of packing into, and by the cooperation of horn-like part, driven side clutch member 10 is connected with control lever shaft 6 with the revolution blocked state constitutes.In addition, in the outer end that axle inserts tube, be formed with the groove 17 of L font, this groove 17 is used to connect spring dead plate 15 described later and makes it to be in and prevents disengaged position.Guide cylinder 12 can movablely freely to rotate be plugged on the periphery that axle inserts tube 13.
In fact spring dead plate 15 becomes circular plate shape, in central hole bolt-inserting hole 16, from the inner side surface center to front end, vertically be provided with 18 horizontal expansions of square bar shape linking department go out simplified, bolt-inserting hole 16 connects these linking departments 18.The 19th, have the spring of regulation elastic force, constitute by helical spring, but be not limited thereto.Packing ring 20 outer the be inserted in guide cylinders 12 of spring 19 by being configured in two ends, an end block of spring 19 is in the inboard the inside of the master end of cup-shaped clutch member 9, and its other end is fixed with spring dead plate.
When being installed in clutch device 8 on the control lever shaft 6, at first,, make two member assemblings with the movable periphery that is plugged on the axle insertion tube 13 of driven side clutch member 10 in master end clutch member 9 ground free to rotate.Secondly, with spring 19 as described above the samely, with spring dead plate 15 one side pressure springs 19, linking department 18 is packed in the L font groove 17 of driven side clutch member 10, thereby in case anti-avulsion is inserted tube 13 from the axle that state is connected the driven side clutch member, further, the binder bolt 21 that inserts from bolt-inserting hole 16 in the combination of front end screw thread and the binding of control lever shaft 6.Like this, the clutch device 8 that comprises dashboard 7 is installed on the control lever shaft 6.
When manually turning round dashboard 7 with the power below the regulation input value, the elastic force of spring 19 pushes master end clutch member 9 to driven side clutch member 10, advance to the direction that is in contact with one another, therefore, being formed on two projections 11 on the member is meshing with each other, the turning power of dashboard is transferred to actuator 3 by control lever shaft 6 smoothly, makes valve rod 2 revolutions.
When making dashboard 7 revolutions with the power more than the specified value, the breakaway force that is caused by the plane of inclination of projection 11 is bigger than the elastic force of spring, and therefore, the projection 11 of two clutch members is in disengaged position, clutch member 9,10 can relatively slide, and disconnects the transmission of input.Afterwards, if input is disengaged or reduces, will be subjected to the elastic force of spring, projection automatically returns to engagement, restores the conduction of input.
In illustrated embodiment, the inclined angle alpha of projection is 20 °, and the height of projection is 1.2mm, and the height of central plane is from top 0.45mm, and the width b of projection is 3.482mm, and the number of projection is 15, and gap ε is 0.375mm.
Claims (8)
1. the drive unit of a rotary valve, it is characterized in that, valve at rotary valve drives with on the control lever shaft of manual actuator, by clutch device dashboard is installed, when the input more than the additional specified value by dashboard, is removed the connection of clutch device, make input not be transferred on the control lever shaft, simultaneously, when input value is specified value when following, make clutch device be in coupled condition.
2. drive unit as claimed in claim 1 is characterized in that, the intermittently elastic force by spring of clutch device and undertaken by the disengaging equilibrium of forces that the tilt angle of projection causes, and described projection is formed on the surface of contact of two clutch members.
3. drive unit as claimed in claim 1 or 2, it is characterized in that, clutch device comprises driven side clutch member and master end clutch member, this driven side clutch member is connected on the control lever shaft at gyratory directions with being integral, this master end clutch member has dashboard with being integral and ground free to rotate activity is plugged on the driven side clutch member, on the surface of contact of two clutch members, dash forward and establish at least one intermeshing projection, and two clutch members are drawn to contact direction bullet by spring.
4. as each described drive unit in the claim 1～3, it is characterized in that the tilt angle of the plane of inclination of projection is 5～40 ° scope.
5. as each described drive unit in the claim 1～4, it is characterized in that the plane of inclination that makes projection begins to form from the central plane over half at least of rising height, on this central plane projection is meshing with each other.
6. drive unit as claimed in claim 3 is characterized in that, the spring dead plate of pressure being established spring one end is from the fixed outside of the master end clutch member front end at control lever shaft.
7. drive unit as claimed in claim 6 is characterized in that spring dead plate is connected the driven side clutch member with the anticreep state.
8. as the described drive unit of claim 1～7, it is characterized in that, make the plane of inclination of projection be formed on the bi-side of projection,, can both make clutch device work no matter the gyratory directions of dashboard is positive and negative.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004042821A JP3664486B1 (en) | 2004-02-19 | 2004-02-19 | Rotary valve drive unit |
| JP2004042821 | 2004-02-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1657812A true CN1657812A (en) | 2005-08-24 |
| CN100351566C CN100351566C (en) | 2007-11-28 |
Family
ID=34737335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100694841A Expired - Fee Related CN100351566C (en) | 2004-02-19 | 2004-06-24 | Drive device of rotary valve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3664486B1 (en) |
| CN (1) | CN100351566C (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04185982A (en) * | 1990-11-20 | 1992-07-02 | Kubota Corp | Open/close operating device for gate valve |
| JP3701385B2 (en) * | 1996-05-31 | 2005-09-28 | 株式会社不二工機 | Motorized valve |
| JP3081820B2 (en) * | 1997-09-26 | 2000-08-28 | 株式会社巴技術研究所 | Rotary valve drive |
| JP2002039432A (en) * | 2000-07-21 | 2002-02-06 | Kubota Corp | Opening and closing operation rod for valve |
| JP2002061668A (en) * | 2000-08-16 | 2002-02-28 | Kubota Corp | Valve operation cap with slip mechanism |
-
2004
- 2004-02-19 JP JP2004042821A patent/JP3664486B1/en not_active Expired - Fee Related
- 2004-06-24 CN CNB2004100694841A patent/CN100351566C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005233297A (en) | 2005-09-02 |
| CN100351566C (en) | 2007-11-28 |
| JP3664486B1 (en) | 2005-06-29 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20071128 |