CN102444744A - Fluid pressure type driving device - Google Patents
Fluid pressure type driving device Download PDFInfo
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- CN102444744A CN102444744A CN2010105026809A CN201010502680A CN102444744A CN 102444744 A CN102444744 A CN 102444744A CN 2010105026809 A CN2010105026809 A CN 2010105026809A CN 201010502680 A CN201010502680 A CN 201010502680A CN 102444744 A CN102444744 A CN 102444744A
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- fluid pressure
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Abstract
The invention provides a fluid pressure type driving device. Oil pressure or fluid pressure of air, N2 or other gases obtained from fluid pressure of pipelines and the like, gas pressure for N2 pressure storage and the like serves as power sources to totally open or totally close valves arranged on the pipelines and the like, so as to fully obtain the required action torque. A rotary rotating mechanism of a valve rod of a valve in the device includes a Scotch yoke provided with a rotating shaft which is used for rotating the valve rod and capable of swinging, a reciprocating movement rod clamped on the Scotch yoke in a freely sliding manner and being capable of performing rectilinear motion, and a reciprocating movement driving device enabling the end part of the reciprocating movement rod to be accommodated in a steam cylinder installed on the casing, enabling the fluid pressure to be exerted on the reciprocating movement rod, and enabling the Scotch yoke to perform vibratory movement, wherein the Scotch yoke is provided with arms capable of clamping two bottoms of the reciprocating movement rod, and rail strip parts oppositely arranged on the two inner sides of the arms; and the reciprocating movement rod is provided with two pushing parts which are propped against the rail strip parts on the two side surfaces and enable the Scotch yoke to swing, so that the valve rod of the valve is enabled to rotate.
Description
Technical field
The present invention relates to be used to make the fluid pressure type drive unit of valve events, relating in particular to the operation that makes based on the to-and-fro motion power of straight line becomes possible fluid pressure type drive unit.
Background technique
Drive unit in the action of the switching that is used for valve; Following drive unit is arranged; Carry out the input of manually operated type, electrodynamic type, air motor formula etc. through the rotation driving; And make through the rotation that obtains thus and to transmit piece and move, move through this and make Scotland yoke (Scotch yoke) swing obtain rotation action, carry out the switching of valve.
As existing drive unit; In the drive unit of manually operated type; The drive unit that the use gear on worm of that kind shown in Figure 8 is arranged; This drive unit is made up of gear reducer, and this gear reducer is with worm gear 6 combinations on the valve rod that is installed in valve 9 of the worm shaft of input end 5 and output terminal.In this drive unit, can change reduction speed ratio through the number of teeth of increase and decrease worm gear 6, produce output torque, thereby valve rod 9 rotations of valve are opened and closed valve.
In addition; Drive unit as general Scotland yoke formula; As shown in Figure 9, the worm shaft of the device of alternate figures 8, and the rotary threaded axle 3 that fixed-site also can be rotated around the axle center at same position is set; And alternative worm gear and Scotland yoke 1 is set; Rotary threaded axle 3 and transmission piece 2 actions with the interior threaded hole 28 that can this rotary threaded axle 3 be screwed in are linked, and assembling can form this drive unit thus through the transmission piece 2 that moves on its axis direction that is rotated in of rotary threaded axle 3.In such drive unit, the rotation through rotary threaded axle 3 makes transmits piece 2 and moves.Thus, making Scotland yoke 1 is center swing with rotatingshaft 12, can the mode of carrying out the switching of valve moves Scotland yoke 1 so that be attached at that rotatingshaft 12 on the valve rod 9 of valve rotates.Transmit on the piece 2; With the rectangular direction of axis of the interior threaded hole 28 that supplies rotary threaded axle 3 to screw on; Be provided with from bi-side outstanding cylindrical part 24 ', 26 '; Make this cylindrical part 24 ', 26 ' be entrenched in being formed in the cylindrical part sliding-groove 143,163 on the arm of Scotland yoke 1, make and transmit piece 2 and on the axial direction of rotary threaded axle 3, move and make 1 swing of Scotland yoke thus, on the rotatingshaft on the valve rod that is attached at valve 9 12, produce rotation based on output torque.
As above-mentioned shown in Figure 8, use in the drive unit of gear on worm mode of worm screw and worm gear, on each position in the open position of the valve that can open and close, closed position, neutral position; The output torque that obtains in these positions is identical; Under the power condition of different that the switching station at the valve of each operating position needs, especially, as shown in Figure 7 being used for pipeline more and having heavy caliber, flowing through the inner fluid of this pipeline and press in the ball valve of high pressure; Torque T uprises when closing; When open and until the middle open position of valve, required torque reduces gradually, reach the moment of torsion of regulation thereafter and become constant moment of torsion.Therefore, when the closing of valve, also hope to access high moment of torsion for a short time even measure, but in the drive unit of use gear on worm mode shown in Figure 8, the output torque when valve opens and closes is constant, as drive unit, rotary manipulation needs action force.
In addition, in the drive unit of use Scotland of that kind as shown in Figure 9 yoke mode, its output torque is as following detailed description; In addition, as shown in Figure 7, in the neutral position of action; Identical with the drive unit of use gear on worm shown in Figure 8; But in open position, the closed position of valve, output torque T becomes the torque T a of the twice in neutral position, is uniform owing to hope to make the act of operation power of transmitting the handle 4 that piece 2 moves; Therefore, hope can realize the operation that output torque T can correspondingly uprise with it.
Below, about drive unit shown in Figure 9, its structure and the mechanism that produces output torque are described.
Shown in figure 11; Transmit in the piece 2; In connecting this internal thread part 28 that transmits piece 2, screw in and chimeric rotary threaded axle 3; Two cylindrical part 24 ', 26 ' be entrenched in the cylindrical part sliding-groove 143,163 with the mode that can slide; These cylindrical part sliding-groove 143,163 holes as length direction are located on two arms 14,16 of Scotland yoke 1 shown in Figure 10, and, two cylindrical part 24 ', 26 ' with respect to being located at transmission piece guiding element 7 on shell 8 and the loam cake (not shown) also engaging setting simultaneously along the mode that rotary threaded axle 3 moves.
In such drive unit shown in Figure 9; Make 3 rotations of rotary threaded axle at operating grip 4, make and transmit under piece 2 situation that direction moves to the left and right in Fig. 9; Though handle 4 is rotated operation, 3 rotations of rotary threaded axle; But because rotary threaded axle 3 itself do not move, therefore, transmitting piece 2 can be by the sense of rotation of handle 4, arbitrary direction moves to the left and right.Thus; Transmit the cylindrical part 24 of piece 2 ', slide and pushing in 26 ' the cylindrical part sliding-groove 143,163 on the arm that is located at Scotland yoke 1 14,16; Therefore Scotland yoke 1 is swung to arbitrary direction; The valve rod 9 that is entrenched in the valve in the embedding hole 18 of rotatingshaft 12 of Scotland yoke 1 together rotates with rotatingshaft 12, can carry out the switching of valve.
Make Figure 10 and Scotland yoke shown in Figure 11 1 and transmitting in the drive unit shown in Figure 9 that piece 2 combines; Transmitting piece 2 as stated carries out along the straight line motion of rotary threaded axle 3; Scotland yoke 1 swing, thus, the information slip that will in rotation angle is 90 ° scope, move is shown among Fig. 7.Such rotatingshaft 12 is only rotated under the situation of the angle of stipulating; Action specification figure through Figure 12; To that kind shown in Figure 7, in 45 ° apart from the neutral position rotation angle range, carry out the position at the two end part of oscillating motion, the situation of comparing output torque with the neutral position and become twice describes, then be described below.The size of representing each one shown in Figure 12 with mark.
That is, at this, if make F: the power that the rotation through handle 4 produces,
Rt: produce the power of moment of torsion,
L: the distance between the cylindrical part center of the center 20 of the valve rod embedding hole 18 of the rotatingshaft 12 of Scotland yoke 1 and transmission piece 2,
E: the distance between the center 20 of the valve rod embedding hole 18 of the rotatingshaft 12 of Scotland yoke 1 and the central axis 30 of rotary threaded axle 3,
η: efficiency of movement,
Then output torque does
T＝Rt·l·η
In the case, since Rt=F/cos θ, l=e/cos θ,
T=(Fe/cos then
245 °) η
The position at the two ends of opening and closing of valve is symmetrical with respect to the neutral position, and each position is θ=45 ° if make, and then the output torque Ta of the position at two ends does
Ta＝(F·e/cos
245°)·η＝2·F·e·η
This output torque characteristic is illustrated, then become the T that is represented by dotted lines among Fig. 7.That is, when being θ=0 ° in the neutral position, output torque T
0Be T
0=Fe η, therefore, Ta=2T
0, two ends open and close the place, become the output torque of the twice in neutral position.
Especially, because the moment of torsion that the switching station of ball valve needs generally has the characteristic of the T of that kind shown in Figure 7, therefore, this fact of retarder of yoke formula can be understood in suitable Scotland of drive unit of the switching that is used for valve.
In addition, when ball valve needs most moment of torsion from closing trend when opening, therefore, the closed position side is θ=50 ° if make, and the open position side is θ=90 °-50 °=40 °, then from closing the output torque Tb of trend when opening does
Tb＝(F·e/cos
250°)·η＝2.42·F·e·η
Output torque increases by 21%.
But, from valve open trend when closing, output torque Tc does
Tc＝(F·e/cos
240°)·η＝1.70·F·e·η
Output torque reduces 15%.This is the characteristic of that kind of representing with thick broken broken line shown in Figure 7.
If adopt such drive unit, then the pipeline that is provided with valve more heavy caliber, flow through today of fluid high-pressureization wherein, can't tackle compacter and require the present situation of high output torque.
Summary of the invention
The present invention makes in view of the above problems; Its purpose is to provide a kind of fluid pressure type drive unit, as the necessary moment of torsion of the spinning movement of valve rod, under the state near the closed condition of valve, can access high moment of torsion; And, can reduce component parts and realize simple structure.
Be used to realize the fluid pressure type drive unit of the object of the invention, have the rotation rotating mechanism, this rotation rotating mechanism will use hydrodynamic pressure, the pressure accumulation N of pipeline etc.
2Gas pressure etc. and the oil pressure that obtains or air, N
2The hydrodynamic pressure of gas etc. is as power source, and the valve rod rotation that is located at the valve on the pipeline etc. is rotated, and this fluid pressure type drive unit is characterised in that,
Said rotation rotating mechanism has: Scotland yoke, and it has rotatingshaft and swings so that the mode that the valve rod of valve rotates fixedly mounts; Reciprocating movement rod, it is fastened on this Scotland yoke with slip mode freely and carries out straight line motion; Reciprocating movement driving device; It is to make this reciprocating movement rod straight line motion and the end of said reciprocating movement rod is accommodated in the cylinder that is installed on the shell; Make the said fluid pressure action that is supplied in the said cylinder on said reciprocating movement rod, make the yoke oscillating motion of said Scotland
Said Scotland yoke has from said rotatingshaft and stretches out and two strands arm of the said reciprocating movement rod of clamping; Rail bar portion with the Rack that is oppositely arranged in two inboards of this arm; And; Said reciprocating movement rod has two pushing portions, and these two pushing portions are provided with devices spaced apart on by the axial direction of the bi-side of said two strands arm clamping and with mode that required turning radius of said Scotland yoke and pendulum angle are connected in the said rail bar portion accordingly
Driving through said reciprocating movement driving device; Said reciprocating movement rod moves on the axial direction of said reciprocating movement rod, thus, the rail bar portion of said Scotland yoke is connected in the pushing portion of said transmission piece; Make the yoke swing of said Scotland, the valve rod of said valve is rotated.
In addition; In above-mentioned fluid pressure type drive unit, said Scotland yoke passes the action axis of length direction of said rail bar portion of the central axis of said rotatingshaft and can in the predetermined angular scope, swing; And; The vibration center of the said pushing portion of said reciprocating movement rod is provided with the mode that is positioned on the axis consistent location with said reciprocating movement rod, and is connected in the said rail bar portion, and the said rotatingshaft of said Scotland yoke is installed on the valve rod of said valve.
In said Scotland yoke in the above-mentioned fluid pressure type drive unit; The mode that said arm is located with respect to the width direction pushing portion side of deflection of said rail bar portion with the action axis of the length direction of the axis that passes said rotatingshaft of said rail bar portion; Be installed on the said rotatingshaft; The angle of swing of the swing top side through increasing said Scotland yoke can make the moment of torsion through the effect of said transmission piece increase.
The pushing portion of the said reciprocating movement rod in the above-mentioned fluid pressure type drive unit; Make with the butt position of the said rail bar portion of said Scotland yoke apart from the axle center of said rotatingshaft only away from predetermined distance, said butt position be positioned at compare with the axis of said reciprocal live axle away from the position on.
The part by the arm clamping of said Scotland yoke and swing of the said reciprocating movement rod in the above-mentioned fluid pressure type drive unit forms the plane; Said two pushing portions devices spaced apart on the axial direction be arranged on the part on the said plane on the said reciprocating movement rod, the part that contacts with said rail bar portion at least of said pushing portion forms the shape of band fillet.
Said reciprocating movement driving device in the above-mentioned fluid pressure type drive unit so that the straight-line mode in the end of said reciprocating movement rod is arranged on the shell of said fluid pressure type drive unit, supports said reciprocating movement rod with to-and-fro motion mode freely.
Said reciprocating movement driving device in the above-mentioned fluid pressure type drive unit has: be arranged on the cylinder on the shell of said fluid pressure type drive unit for making said reciprocating movement rod to-and-fro motion; The end that is configured in the said reciprocating movement rod on this cylinder is accommodated, and make the fluid pressure that is supplied in the said cylinder act on the plunger type drive unit on this end.
Said reciprocating movement driving device in the above-mentioned fluid pressure type drive unit; With the piston on the two end part that are installed in said reciprocating movement rod be arranged to can two cylinders on being located at said shell in to-and-fro motion, oil pressure, air, the N of the either side through being supplied to the said piston in the said cylinder
2The fluid of gas pressure etc. is pressed, and said reciprocating movement rod is moved.
Fluid pressure type drive unit of the present invention; Have the rotation rotating mechanism, this rotation rotating mechanism presses fluid as power source, and the valve rod rotation that is located at the valve on the pipeline etc. is rotated; This rotation rotating mechanism has: Scotland yoke, and it is fixedly mounted on the rotatingshaft and swings; Reciprocating movement rod, it is fastened on this Scotland yoke with slip mode freely and carries out straight reciprocating motion; Reciprocating movement driving device, it is used to make this reciprocating movement rod straight line motion, and said Scotland yoke has from said rotatingshaft and stretches out and two strands arm of the said reciprocating movement rod of clamping; Rail bar portion with the Rack that is oppositely arranged in two inboards of this arm, and said reciprocating movement rod has two pushing portions; These two pushing portions are provided with the mode that is connected to accordingly at the turning radius required by the two end part of the length direction of the bi-side of said two strands arm clamping and said Scotland yoke and pendulum angle in the said rail bar portion, therefore, and through reciprocating driving based on reciprocating movement driving device; Make the reciprocating movement rod action, reciprocating movement rod moves on its axial direction, is arranged on the axial direction of reciprocating movement rod to pushing portion devices spaced apart; Scotland yoke has two strands arm, and this arm of two strands has the rail bar portion that is connected in the above-mentioned pushing portion, and Scotland yoke is swung through directly moving of reciprocating movement rod; Be fixed on two strands the arm and as the rotatingshaft rotation of its rotating center, the chimeric valve rod that is fixed on the valve on this rotatingshaft rotates, and can carry out the switching of valve; At this moment; Although the to-and-fro motion based on reciprocating movement driving device is constant, because the pendulum angle of each moving side of beginning of Scotland yoke becomes big, therefore; Be applied to passing through the output torque that Scotland yoke applies and to obtain as high moment of torsion on the rotatingshaft; Pushing portion is arranged on the reciprocating movement rod integratedly, can suppress fabricating cost, can make this simple structure; Also high tenacity can be obtained with the rail bar portion of arm one, required purposes can be tackled widely.
In the above-mentioned drive unit, said Scotland yoke passes the action axis of length direction of said rail bar portion of the central axis of said rotatingshaft and can in the predetermined angular scope, swing; And; The vibration center of the said pushing portion at place, the two end part of said reciprocating movement rod is provided with the mode that is positioned on the axis consistent location with said reciprocating movement rod, and is connected in the said rail bar portion, and the said rotatingshaft of said Scotland yoke is installed on the valve rod of said valve; Therefore; Being provided with to insert the mode of transmitting piece with transmitting the rail bar portion that piece is oppositely arranged of two strands arm of Scotland yoke can make in the pushing portion of the reciprocating movement rod that the rail bar portion with Scotland yoke that is connected to reliably of the rail bar portion that transmits piece is provided with accordingly, and this rail bar portion is moved; Each top angle of swing also becomes greatly, so output torque also becomes big.
In addition, in said Scotland yoke of above-mentioned fluid pressure type drive unit, the mode that said arm is located with respect to the width direction pushing portion side of deflection of said rail bar portion with the action axis of the length direction of the axis that passes said rotatingshaft of said rail bar portion; Be installed on the said rotatingshaft; Therefore, each top angle of said Scotland yoke especially becomes that big side in deflection pushing portion side; It is bigger that pendulum angle becomes; Therefore, the moment of torsion on the rotatingshaft that acts on Scotland yoke produces through moving of said reciprocating movement rod is further increased, required moment of torsion increase in the time of can making the switching of valve.
The pushing portion of the said reciprocating movement rod in the above-mentioned fluid pressure type drive unit; Make with the butt position of the said rail bar portion of said Scotland yoke apart from the axle center of said rotatingshaft only away from predetermined distance; Said butt position be positioned at compare with the axis of said reciprocal live axle away from the position on; Therefore; The butt position of the rail bar portion of Scotland yoke and the pushing portion of reciprocating movement rod is identical but the mode of turning radius lengthening is located with the angle of the top side of Scotland yoke, produces based on the mobile moment of torsion of rotation section that makes of the pushing portion of rail bar portion biglyyer, and the more situation of powerful rotation torque when needing valve to open and close also can be tackled.
In addition; The part by the arm clamping of said Scotland yoke and swing of the said reciprocating movement rod in the above-mentioned fluid pressure type drive unit forms the plane; Said pushing portion devices spaced apart on the axial direction be arranged on the part on the said plane on the said reciprocating movement rod; At least the part that contacts with said rail bar portion of said pushing portion forms the shape of band fillet; Therefore, contacting between the rail bar portion of pushing portion and Scotland yoke not only can be carried out reliably, the action at place, end can also be swung swimmingly.
In addition; Said reciprocating movement driving device in the above-mentioned fluid pressure type drive unit; So that the straight-line mode in the end of said reciprocating movement rod is arranged on the shell of said fluid pressure type drive unit, support said reciprocating movement rod with to-and-fro motion mode freely, therefore; Do not need additional components and can the reliable earth's axis of reciprocating movement rod be bearing on the shell, can make its structure compact.
In addition, the said reciprocating movement driving device in the above-mentioned fluid pressure type drive unit has: be arranged on the cylinder on the shell of said fluid pressure type drive unit for making said reciprocating movement rod to-and-fro motion; The end that is configured in the said reciprocating movement rod on this cylinder is accommodated; And make the fluid pressure that is supplied in the said cylinder act on the plunger type drive unit on this end, therefore, fluid is pressed act on the plunger of either side on the two end part that are located at said reciprocating movement rod, drive unit; The to-and-fro motion of reciprocating movement rod is produced; Obtain output torque, therefore, valve rod is rotated.In addition, the plunger type drive unit, owing to the oil pressure that can use high pressure as power source, therefore, suitable equally to the situation that is in such environment.
Said reciprocating movement driving device in the above-mentioned fluid pressure type drive unit; With the cylinder configuration on the two end part that are installed in said reciprocating movement rod become can two cylinders on being located at said shell in to-and-fro motion, the oil pressure of the either side through being supplied to the said piston in the said cylinder or air, N
2Therefore the gas of gas etc. and said reciprocating movement rod is moved, be set to, by the oil pressure that obtains through electronic or manual oil pressure pump or air, N
2The gas of gas etc. is pressed reciprocating movement rod is moved, and therefore, for the valve of the scale that can't tackle based on the rotary manipulation of the manual handle of existing worm-gear type, can tackle equally.
About novel characteristics of the present invention and structure, effect, can further understand through the accompanying drawing that is associated with following explanation.In addition, in the accompanying drawing, identical reference character is represented identical component parts.
Description of drawings
Fig. 1 representes fluid pressure type (plunger type) drive unit of an embodiment of the invention, and Figure 1A is the part top view in cross-section, and Figure 1B is its part cross-sectional side elevational view.
Fig. 2 representes the reciprocating movement rod that uses in the plunger type drive unit of the present invention shown in Figure 1, and Fig. 2 A is its side view, and Fig. 2 B is its plan view.
Fig. 3 is the stereogram of Scotland yoke of using in the fluid pressure type drive unit of an embodiment of the invention shown in Figure 1.
Fig. 4 representes fluid pressure type (piston type) drive unit of other mode of executions of the present invention, and Fig. 4 A is the part top view in cross-section, and Fig. 4 B is its part cross-sectional side elevational view.
Fig. 5 is the action specification figure of the fluid pressure type drive unit of an embodiment of the invention.
Fig. 6 is the action specification figure of the fluid pressure type drive unit of other mode of executions of the present invention.
Fig. 7 is the switching and the ball valve itself of expression ball valve and the line chart that is created in the relation of the moment of torsion on the fluid pressure type drive unit.
Fig. 8 is the sectional view of the drive unit of the existing use gear on worm of expression.
Fig. 9 is the sectional view of the drive unit of existing use Scotland yoke.
Figure 10 is the stereogram of Scotland yoke of using in the drive unit shown in Figure 9.
Figure 11 is the stereogram of the transmission piece that is combined in the enterprising enforcement usefulness of Scotland yoke of fluid pressure type drive unit shown in Figure 10.
Figure 12 is Scotland yoke and the action specification figure that transmits piece in the drive unit shown in Figure 9.
The explanation of reference character
1 Scotland yoke
2 transmit piece
3 rotary threaded axles
4 handles
5 worm screws
6 worm gears
7 transmit the piece guiding element
8 shells
9 valve rods
10 guide rods
11 adjustment bolts
12 rotatingshafts
14 arms
16 arms
18 valve rod embedding holes
20 rotatingshaft central axis
22 transmit the piece main body
24 pushing portions
24 ' cylindrical part
26 pushing portions
26 ' cylindrical part
28 internal thread embedding holes
29 pilot holes
30 rotary threaded axis
32 reciprocating movement rods
34 planar surface portion
42 pistons
44 cylinders
46 cylinders
100 fluid pressure type drive units
142 rail bar portions
142 ' rail bar portion action axis
143 cylindrical part sliding-grooves
162 rail bar portions
163 cylindrical part sliding-grooves
Embodiment
Below, be used for the mode of execution of embodiment of the present invention with reference to description of drawings.
Referring to figs. 1 through Fig. 3, the fluid pressure type drive unit 100 that is used for the mode of execution of embodiment of the present invention has: Scotland yoke 1, and it has embedding hole 18, these embedding hole 18 chimeric valve rods 9 and valve rod 9 is fixing through the key means of fixation; Reciprocating movement rod 32 is through two strands arm, 14, the 16 clamping reciprocating movement rods 32 of this Scotland yoke 1; Reciprocating movement driving device, it takes in two ends of this reciprocating movement rod 32; Shell 8, it takes in Scotland yoke 1, reciprocating movement rod 32 etc.
Such fluid pressure type drive unit 100 is with the hydrodynamic pressure, the pressure accumulation N that use pipeline etc.
2Gas pressure etc. and the oil pressure that obtains or air, N
2The hydrodynamic pressure of gas etc. is as power source, is used to make the ball valve action that is located on the pipeline etc.Have Scotland yoke 1 that is installed on the valve rod 9 that is used for above purposes on such valve, this Scotland yoke 1 is as shown in Figure 3, has: rotatingshaft 12, the embedding hole 18 that it has chimeric valve rod 9 and through the key means of fixation valve rod 9 is fixed; Two strands arm 14,16; Its with the mode of clamping reciprocating movement rod 32 devices spaced apart on the axial direction be installed on this rotatingshaft 12; Inboard at these arms 14,16; Relatively and with arm 14,16 form the rail bar portion 142,162 that is provided with, this rail bar portion 142,162 has the width W narrower than arm 14,16, is provided with the mode that has free end and have a full intensity.
The reciprocating movement rod 32 that makes up with such Scotland yoke 1; Shown in the plan view of the side view of Fig. 2 A and Fig. 2 B; Two end part form cylindric; Central part forms as planar surface portion 34, rail bar portion this planar surface portion 24 of 142,162 clampings of the inboard of two strands the arm 14,16 through being oppositely arranged on Scotland yoke 1, and this planar surface portion 34 has the smooth and easy thickness that carries out of the swing that can guarantee Scotland yoke 1.This is by the part of arm 14,16 clampings, and it is plane that two sides form, and on described bi-side, a pair of pushing portion 24,26 forms along the axis devices spaced apart of reciprocating movement rod 32.These pushing portions 24,26; For with rail bar portion 142,162 butts of Scotland yoke 1 with the correspondingly devices spaced apart setting of pendulum angle of Scotland yoke 1; Be arranged on the pushing portion 24,24 on the side of reciprocating movement rod 32 for devices spaced apart, devices spaced apart is provided with pushing portion 26,26 equally in the longitudinal direction on the another side of reciprocating movement rod 32.Above-mentioned pushing portion 24,26; Be arranged on the shape that part pushing portion 24,26, that contact with rail bar portion 142,162 at least on the planar surface portion 34 of reciprocating movement rod 32 forms the band fillet in devices spaced apart on the axial direction; Not only can carry out the contacting of rail bar portion 142,162 of pushing portion 24,26 and Scotland yoke 1 reliably, and also can move swimmingly in the swing end.
Above-mentioned Scotland yoke 1 is processed by the sufficient steel of intensity with reciprocating movement rod 32; As Fig. 1 and shown in Figure 2 position and make up; With respect to Scotland yoke 1 that is assembled in the shell 8, make the pushing portion 24 of reciprocating movement rod 32, the plane side face between 26 insert two strands arm 14 of Scotland yoke 1, between 16, be provided with thus; Therefore, the assembling in shell 8 also can easily be carried out.
Reciprocating movement rod 32 with respect to such setting; Scotland yoke 1 is located in the pushing portion 24 of the bi-side of reciprocating movement rod 32, the mode between 26 with the rail bar portion 142,162 of arm 14,16; And be arranged in the shell 8 of mo(u)lding or welding structure, rotatingshaft 12 supports setting through bearing with the mode that can rotate with respect to shell 8.
Be used to make the two end part of the reciprocating movement rod 32 of Scotland yoke 1 action; In order to move back and forth; Has the cylinder 46 on the relative part that is located at shell 8; Insert in this cylinder 46 end of reciprocating movement rod 32, constitutes with the mode that can make oil pressure act on this end, forms the plunger type drive unit.
Below, according to action specification figure shown in Figure 5, Scotland yoke 1 of above-mentioned that kind and the action of reciprocating movement rod 32 being described, Fig. 5 is corresponding with the size that position shown in Figure 12 concerns.
If like Fig. 3 and shown in Figure 5, the width of rail bar portion 142,162 of inboard that order relatively is formed on two arms 14,16 of Scotland yoke 1 is W, then passes through the calculating according to Fig. 5, and output torque is described below.Action axis 142 ', 162 ' pass center 20 as the rotatingshaft 12 of the oscillation center of rail bar portion 142,162; This action axis 142 ', 162 ' be positioned at the position of W/2; If likewise set angle of oscillation θ ° with existing example shown in Figure 12, then be connected to the reciprocating movement rod 32 under the situation in the rail bar portion 142,162 pushing portion 24,26 vibration center and pass the angle θ between the line at center 20 of rotatingshaft 12
1Be θ
1＞θ, the output torque T of this moment
TBe described below.
T
T＝(F·e/cos
2θ
1)·η
At this, making W/2 be equivalent to as angle under 50 ° the situation,
T
T＝(F·e/cos
2θ
1)·η＝2.42·F·e·η
That is, under this situation, the vibration center position of the pushing portion 24,26 of reciprocating movement rod 32, the vibration center position of the arm 14,16 of Scotland yoke 1 is not 45 ° of existing pendulum angle apart from the position of oscillation center, but is equivalent to 50 °.In addition, relative therewith, the swing end position of the opposition side at the swing top of yoke 1 in Scotland is with the output torque T of above-mentioned situation
TLikewise derive output torque T
X, therefore, identical ground with existing example, pendulum angle θ is 40 °, T
X=1.7Fe η.But, the output torque T at the action end positions place of Scotland yoke 1
T, T
XRatio be T
T/ T
X=2.42/1.7=1.42 under state shown in Figure 5, compares with existing situation, and output torque is realized 42% increase.If it is represented with line chart, then can draw among Fig. 7 with such output torque shown in wide dotted line or the slightly broken broken line.The situation when closing like valve, in need be when the opening valve high output torque, this situation is effective.
In addition; As shown in Figure 6; The rail bar portion 142,162 that makes Scotland yoke 1 though the pendulum angle of moving side of the beginning of Scotland yoke 1 is identical, increases the swing turning radius with respect to the abutment of the pushing portion 24,26 of reciprocating movement rod 32 further away from each other; For this reason; The vibration center position that makes pushing portion 24,26 is constant apart from e apart from the oscillation center 20 of Scotland yoke 1 of the central axis 30 of reciprocating movement rod 32, further to be positioned at the mode of only leaving apart from the position of f pushing portion 24,26 is set on reciprocating movement rod 32, then can obtain high output torque.
And; Make the position of the vibration center of the pushing portion 24,26 on the reciprocating movement rod 32 be positioned at from the oscillation center 20 of yoke 1 apart from Scotland apart from e further only away from the position of f; And; The position, two top of the swing of Scotland yoke 1 is with the switching of valve, if with the action axis 142 in the rail bar portion 142,162 ' become 0.6W, make rail bar portion 142,162 with respect to pushing portion 24,26 butts in the mode of closing side and becoming 0.4W opening side; Then not only with respect to the situation of existing example shown in Figure 12 but also with respect to mode of execution shown in Figure 5 of the present invention, pendulum radius l
2Elongated, can obtain high output torque.
Utilize above-mentioned formula to represent the output torque that this is actual, then be described below.
At this; The vibration center line 142 of Scotland yoke 1 '; In mode of execution shown in Figure 6, be equivalent to 45 ° apart from the angle θ in swing neutral position, but if to be connected to the angle θ apart from the swing neutral position of vibration center under the state in the pushing portion 24,26 in rail bar portion 142,162
2The mode that is 53 °, 52 ° is to the action axis 142 of rail bar portion 142,162 ' set, then
Close the output torque T of side
T1Be (full cut-off → open direction)
T
T1＝(F·e/cos
253°)·η＝2.76·F·e·η
Open the output torque T of side
X1Be (standard-sized sheet → closing direction)
T
X1＝(F·e/cos
252°)·η＝2.64·F·e·η
These in Fig. 7, are represented as 0 ° pendulum angle θ with the side of closing of valve output torque T with line chart, then shown in thick single-point line, in addition, open side shown in circular lines.This situation; Even be respectively with respect to the neutral position at the center that makes arm 14,16 under 45 ° the situation; Scotland yoke 1 with respect to existing mode; In the process of full cut-off → open, can access 2.76 times output torque, in the process of standard-sized sheet → close, can access 2.64 times output torque.
Like this, in the fluid pressure type drive unit 100 of mode of execution shown in Figure 6, through based on the oil pressure, air pressure, the N that act on the reciprocating movement rod 32
2The effect that the fluid of gas pressure etc. is pressed and realize pass through the output torque T that reciprocating movement rod 32 produces not only compared with existing example, and with mode of execution of the present invention shown in Figure 5 in the output torque that obtains compare, also can access high output torque.
As stated; Be located at the rail bar portion 142,162 of inboard of the arm 14,16 of Scotland yoke 1; Action axis 142 through making this rail bar portion 142,162 ' the be positioned at either side of width W direction; Be positioned at valve and open or close the one-sided of side, can make the swaying direction displacement, can make the distance at center 20 of rotatingshaft 12 of butt position yoke 1 of rail bar portion 142,162 and pushing portion 24,26 longer far from Scotland according to designing requirement.Thus, can carry out the adjusting of output torque T as required.In addition, compare, can not change scale ground and obtain high output torque with existing fluid pressure type drive unit, therefore big even the valve that will be provided with becomes, compactness that also can implement device.
And; Fluid pressure type drive unit 100 also can be used as the setting of cylinder type drive unit; As shown in Figure 4; In the reciprocating movement driving device, piston 42 is installed at the two end part of reciprocating movement rod 32, with piston 42 can be in the cylinder on being oppositely arranged on shell 8 44 reciprocating mode be provided with and constitute this cylinder type drive unit.This cylinder type drive unit, the either side of the piston 42 in the countercylinder 44 is supplied with oil pressure, air, N as required
2The fluid of gas etc. is pressed; Reciprocating movement rod 32 is moved; Make yoke 1 swing in Scotland via the rail bar portion 142,162 of the arm 14,16 that pushes against Scotland yoke 1 in the pushing portion 24,26 of reciprocating movement rod 32, and valve rod 9 is rotated, can carry out the switching of valve via rotatingshaft 12.Through such cylinder type drive unit, can be through than the oil pressure that is easier to obtain, air, N
2The fluid of gas etc. is pressed and is made 2 actions of Scotland yoke, can obtain the high output torque to valve rod.
As stated, fluid pressure type drive unit of the present invention obviously is not limited to above-mentioned mode of execution, implements in the technical scope that can in claims, put down in writing.
Claims (8)
1. a fluid pressure type drive unit has the rotation rotating mechanism, and this rotation rotating mechanism will use hydrodynamic pressure, the pressure accumulation N of pipeline etc.
2Gas pressure etc. and the oil pressure that obtains or air, N
2The hydrodynamic pressure of gas etc. is as power source, and the valve rod rotation that is located at the valve on the pipeline etc. is rotated, and this fluid pressure type drive unit is characterised in that,
Said rotation rotating mechanism has: Scotland yoke, and it has rotatingshaft and swings so that the mode that the valve rod of valve rotates fixedly mounts; Reciprocating movement rod, it is fastened on this Scotland yoke with slip mode freely and carries out straight line motion; Reciprocating movement driving device; It is to make this reciprocating movement rod straight line motion and the end of said reciprocating movement rod is accommodated in the cylinder that is installed on the shell; Make the said fluid pressure action that is supplied in the said cylinder on said reciprocating movement rod, make the yoke oscillating motion of said Scotland
Said Scotland yoke has from said rotatingshaft and stretches out and two strands arm of the said reciprocating movement rod of clamping; Rail bar portion with the Rack that is oppositely arranged in two inboards of this arm; And; Said reciprocating movement rod has two pushing portions, and these two pushing portions are provided with devices spaced apart on by the axial direction of the bi-side of said two strands arm clamping and with mode that required turning radius of said Scotland yoke and pendulum angle are connected in the said rail bar portion accordingly
Driving through said reciprocating movement driving device; Said reciprocating movement rod moves on the axial direction of said reciprocating movement rod, thus, the rail bar portion of said Scotland yoke is connected in the pushing portion of said transmission piece; Make the yoke swing of said Scotland, the valve rod of said valve is rotated.
2. fluid pressure type drive unit as claimed in claim 1; It is characterized in that; Said Scotland yoke; Passing the action axis of length direction of said rail bar portion of the central axis of said rotatingshaft can swing in the predetermined angular scope, and the vibration center of the said pushing portion of said reciprocating movement rod is provided with the mode that is positioned on the axis consistent location with said reciprocating movement rod; And be connected in the said rail bar portion, the said rotatingshaft of said Scotland yoke is installed on the valve rod of said valve.
3. fluid pressure type drive unit as claimed in claim 1; It is characterized in that; In the yoke of said Scotland, the mode that said arm is located with respect to the width direction pushing portion side of deflection of said rail bar portion with the action axis of the length direction of the axis that passes said rotatingshaft of said rail bar portion is installed on the said rotatingshaft; The angle of swing of the swing top side through increasing said Scotland yoke can make the moment of torsion through the effect of said transmission piece increase.
4. fluid pressure type drive unit as claimed in claim 3; It is characterized in that; The pushing portion of said reciprocating movement rod; Make with the butt position of the said rail bar portion of said Scotland yoke apart from the axle center of said rotatingshaft only away from predetermined distance, said butt position be positioned at compare with the axis of said reciprocal live axle away from the position on.
5. fluid pressure type drive unit as claimed in claim 1; It is characterized in that; The part by the arm clamping of said Scotland yoke and swing of said reciprocating movement rod forms the plane; Said two pushing portions devices spaced apart on the axial direction be arranged on the part on the said plane on the said reciprocating movement rod, the part that contacts with said rail bar portion at least of said pushing portion forms the shape of band fillet.
6. fluid pressure type drive unit as claimed in claim 1; It is characterized in that; Said reciprocating movement driving device; So that the straight-line mode in the end of said reciprocating movement rod is arranged on the shell of said fluid pressure type drive unit, support said reciprocating movement rod with to-and-fro motion mode freely.
7. fluid pressure type drive unit as claimed in claim 1 is characterized in that said reciprocating movement driving device has: be arranged on the cylinder on the shell of said fluid pressure type drive unit for making said reciprocating movement rod to-and-fro motion; The end that is configured in the said reciprocating movement rod on this cylinder is accommodated, and make the fluid pressure that is supplied in the said cylinder act on the plunger type drive unit on this end.
8. fluid pressure type drive unit as claimed in claim 1; It is characterized in that; Said reciprocating movement driving device; With the piston on the two end part that are installed in said reciprocating movement rod be arranged to can two cylinders on being located at said shell in to-and-fro motion, oil pressure, air, the N of the either side through being supplied to the said piston in the said cylinder
2The fluid of gas pressure etc. is pressed, and said reciprocating movement rod is moved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105026809A CN102444744A (en) | 2010-10-08 | 2010-10-08 | Fluid pressure type driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105026809A CN102444744A (en) | 2010-10-08 | 2010-10-08 | Fluid pressure type driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102444744A true CN102444744A (en) | 2012-05-09 |
Family
ID=46007524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105026809A Pending CN102444744A (en) | 2010-10-08 | 2010-10-08 | Fluid pressure type driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102444744A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109312833A (en) * | 2016-05-19 | 2019-02-05 | 伊米斯蒂有限责任公司 | Device for the displacement of valve valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995022027A1 (en) * | 1994-02-11 | 1995-08-17 | Prime Actuator Control Systems Limited | Safety device for a valve actuator |
| JPH08277958A (en) * | 1995-03-31 | 1996-10-22 | Kitz Corp | Scotch yoke type actuator |
| CN2823741Y (en) * | 2005-10-27 | 2006-10-04 | 中西定之 | Driving device for realizing valve opening or closing by rotating valve shaft |
| US20080202263A1 (en) * | 2007-02-28 | 2008-08-28 | Edward George Holtgraver | Flat yoke valve actuator |
| CN201582407U (en) * | 2009-12-30 | 2010-09-15 | 姜堰市通达船用阀泵有限公司 | Emergency manual structure for butterfly valve |
-
2010
- 2010-10-08 CN CN2010105026809A patent/CN102444744A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995022027A1 (en) * | 1994-02-11 | 1995-08-17 | Prime Actuator Control Systems Limited | Safety device for a valve actuator |
| JPH08277958A (en) * | 1995-03-31 | 1996-10-22 | Kitz Corp | Scotch yoke type actuator |
| CN2823741Y (en) * | 2005-10-27 | 2006-10-04 | 中西定之 | Driving device for realizing valve opening or closing by rotating valve shaft |
| US20080202263A1 (en) * | 2007-02-28 | 2008-08-28 | Edward George Holtgraver | Flat yoke valve actuator |
| CN201582407U (en) * | 2009-12-30 | 2010-09-15 | 姜堰市通达船用阀泵有限公司 | Emergency manual structure for butterfly valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109312833A (en) * | 2016-05-19 | 2019-02-05 | 伊米斯蒂有限责任公司 | Device for the displacement of valve valve |
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Application publication date: 20120509 |