CN108980397B

CN108980397B - Double-locking-body transmission operating device

Info

Publication number: CN108980397B
Application number: CN201810959151.8A
Authority: CN
Inventors: 陈继檬; 刘晓琦
Original assignee: Zibo Wouters Petrochemical Equipment Co
Current assignee: Zibo Wouters Petrochemical Equipment Co
Priority date: 2018-08-22
Filing date: 2018-08-22
Publication date: 2020-03-17
Anticipated expiration: 2038-08-22
Also published as: CN108980397A; WO2020038271A1

Abstract

The invention relates to a double-locking-body transmission operating device which comprises a rotating body, wherein the rotating body is a rotating body which rotates in a reciprocating manner in a set stroke, the double-locking-body transmission operating device is provided with a driving turntable and a stroke positioning seat, the driving turntable is provided with a first overrunning groove and a second overrunning groove, the rotating body is provided with a first through hole and a second through hole, a first locking body is arranged in the first through hole, and a second locking body is arranged in the second through hole; the stroke positioning seat is provided with a forward positioning concave hole and a reverse positioning concave hole. The invention has the beneficial effects that: the bidirectional locking body and the overrunning groove structure are adopted, so that the driving turntable can complete a section of rotation stroke outside two rotation stroke ends of the rotor while completing the set stroke driving of the rotor; when the forced sealing ball valve is applied to the forced sealing ball valve, the reset operation of the retainer can be smoothly completed in the opening process of the forced sealing ball valve.

Description

Double-locking-body transmission operating device

Technical Field

The invention belongs to a ball valve, and particularly relates to a double-locking-body transmission operating device.

Background

The forced sealing ball valve is provided with a forced sealing device, and the forced sealing device enables the valve ball and the valve seat to be clamped when the forced sealing ball valve is in a closed state, so that a gap between the valve ball and the valve seat is sealed, and forced sealing is realized. One type of forced sealing device is a valve ball with a flap that extends from the ball toward the seat and engages the ball when the ball is rotated to a closed position. In order to adapt to the application in a high-pressure pipeline, a forced sealing ball valve adopts a spiral driving wheel to drive a valve clack to move through a planetary roller thread device, the planetary roller thread device is provided with a retainer of a planetary roller, and the spiral driving wheel rotates in a reciprocating mode in a small rotating stroke, so that the planetary roller thread device does not need to be provided with a track changing mechanism of the planetary roller, and the spiral driving wheel stirs the retainer to reset in the opening process of the ball valve every time. When the ball valve is opened, the spiral driving wheel retracts the first movable valve clack to contact with the valve ball to complete the reset of the valve clack, and when the valve clack is reset, the spiral driving wheel or the valve clack drives the retainer to reset, and then the valve ball starts to rotate from the closing position to the opening position. However, a technical problem faced by such a cage resetting mechanism is that when the valve ball is in the closed position, there may be a high pressure difference between the upstream and downstream of the valve, so that a huge acting force exists between the valve flap, the spiral driving wheel and the planetary roller, and the spiral driving wheel or the valve flap needs to push the cage to drive the planetary roller to slide between the valve flap and the spiral driving wheel during the resetting process of the toggle cage, and the acting force will increase the load of each part during the resetting process of the toggle cage, so that the service life of the cage resetting mechanism is greatly reduced.

Disclosure of Invention

The invention aims to provide a technical scheme of a double-locking-body transmission operating device, which enables a driving turntable to continuously complete a section of rotation stroke beyond two ends of a set stroke of a rotating body, and further solves the operation driving problem of some mechanical devices.

In order to achieve the purpose, the technical scheme of the invention is as follows: a double-locking-body transmission operating device comprises a rotating body, wherein the rotating body is a rotating body which rotates in a reciprocating manner within a set stroke, the double-locking-body transmission operating device is provided with a driving turntable and a stroke positioning seat, the driving turntable is provided with a first overrunning groove and a second overrunning groove, the rotating body is provided with a first through hole and a second through hole, a first locking body is arranged in the first through hole, and a second locking body is arranged in the second through hole; the stroke positioning seat is provided with a forward positioning concave hole and a reverse positioning concave hole.

Furthermore, the first locking body moves back and forth along the first through hole, the first locking body can move into the first through hole and the first overrunning groove, and the first locking body can also be separated from the first overrunning groove and move into the first through hole and the forward positioning concave hole; the second locking body is along second through-hole reciprocating motion, the second locking body can move the second through-hole with between the reverse location shrinkage pool, the second locking body can also move the second through-hole with the second surmounts the inslot.

Furthermore, when one end of the first overrunning groove is a forward driving end, one end of the second overrunning groove is a reverse driving end, and the position of the first through hole corresponds to the forward driving end of the first overrunning groove, the position of the second through hole corresponds to the reverse driving end of the second overrunning groove; the forward driving end is used for stirring the first locking body to drive the rotating body to rotate in the forward direction, and the reverse driving end is used for stirring the second locking body to drive the rotating body to rotate in the reverse direction; the forward driving end drives the first locking body to enter the forward positioning concave hole, and the reverse driving end drives the second locking body to enter the reverse positioning concave hole.

Furthermore, when the rotor rotates to the forward end of the set stroke, the position of the first through hole corresponds to the forward positioning concave hole, and when the rotor rotates to the reverse end of the set stroke, the position of the second through hole corresponds to the reverse positioning concave hole.

Furthermore, the first locking body is provided with a first positioning acting surface which is in contact with the positive positioning concave hole, the first positioning acting surface is a curved surface or an inclined surface, and when the first positioning acting surface is in contact with the positive positioning concave hole, acting force along the rotating direction of the rotating body and acting force along the axial direction of the first through hole are generated; the first locking body is provided with a first overrunning end acting surface which is contacted with the end of the overrunning groove, the first overrunning end acting surface is a curved surface or an inclined surface, and the first overrunning end acting surface generates acting force along the rotating direction of the driving turntable and acting force along the axial direction of the first through hole when being contacted with the end of the overrunning groove; the second locking body is provided with a second positioning action surface which is in contact with the reverse positioning concave hole, the second positioning action surface is a curved surface or an inclined surface, and the second positioning action surface generates an action force along the rotating direction of the rotating body and an action force along the axial direction of the second through hole when being in contact with the reverse positioning concave hole; the second locking body is provided with a second overrunning end acting surface which is in contact with the end of the overrunning groove, the second overrunning end acting surface is a curved surface or an inclined surface, and the second overrunning end acting surface generates acting force along the rotating direction of the driving turntable and acting force along the axial direction of the second through hole when in contact with the end of the overrunning groove.

Furthermore, the first overrunning groove and the second overrunning groove are annular grooves which are staggered in the radial direction of the driving turntable.

Further, the first overrunning groove and the second overrunning groove are ring grooves with the same radius on the driving turntable.

Still further, the first and/or second override grooves are annular grooves extending along a spiral or helical line.

Furthermore, the double-locking-body transmission operating device is arranged on a forced sealing ball valve, the rotator is a valve rod gear protection cover fixedly connected with a valve ball, the set stroke of the rotator is the rotation stroke of the valve ball, the forward end of the rotation stroke corresponds to the closing position of the valve ball, the reverse end of the rotation stroke corresponds to the opening position of the valve ball, the stroke positioning seat is a pivot support plate on the valve ball, the valve rod drives the driving turntable to rotate, the valve ball is provided with a valve clack, the valve clack is driven by a spiral driving wheel to extend out of and retract from the valve ball, the spiral driving wheel drives the valve clack to move through a planetary roller thread device, and the planetary roller thread device is provided with a retainer; the driving turntable drives the spiral driving wheel to rotate.

Furthermore, in the rotation stroke of the valve ball, the forward driving end pulls the valve ball to rotate to a closing position through the first locking body, the driving rotary disc, the valve ball, the spiral driving wheel and the valve clack rotate synchronously, after the valve ball rotates to the closing position, the forward driving end of the first overrunning groove pushes the first locking body to enter the first through hole and the forward positioning concave hole, the driving rotary disc rotates forward relative to the valve ball, the second locking body moves in the second overrunning groove, the driving rotary disc drives the spiral driving wheel to rotate, and the valve clack extends towards the valve seat and is clamped with the valve seat; the driving turntable rotates in the opposite direction relative to the valve ball, the driving turntable drives the spiral driving wheel to rotate, the valve clack retracts towards the valve ball and is separated from the valve seat, after the reverse driving end of the second overrunning groove is contacted with the second locking body, the reverse driving end drives the valve ball to rotate towards the opening position through the second locking body, the driving turntable, the valve ball, the spiral driving wheel and the valve clack rotate synchronously, the first locking body enters the first through hole and the first overrunning groove, after the valve ball rotates to the opening position, the reverse driving end pushes the second locking body to enter the second through hole and the reverse positioning concave hole, the driving turntable rotates in the opposite direction relative to the valve ball, the first locking body moves in the first overrunning groove, and the driving turntable drives the spiral driving wheel to rotate, and the cage is reset.

The invention has the beneficial effects that: the bidirectional locking body and the overrunning groove structure are adopted, so that the driving turntable can complete a section of rotation stroke outside two rotation stroke ends of the rotor while completing the set stroke driving of the rotor; when the valve ball is applied to a forced sealing ball valve, the spiral driving wheel can be driven to enable the valve clack and the valve seat to be separated from and clasped with each other, the pressure of the valve cavity and the pressure of a pipeline are gradually balanced when the valve ball rotates to the opening position, and the spiral driving wheel continues to rotate after the valve ball reaches the opening position, so that the valve clack and the retainer are reset; the forced sealing ball valve can successfully complete the reset operation of the retainer in the opening process.

The invention is described in detail below with reference to the figures and examples.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a view from the direction A of FIG. 2;

FIG. 4 is a block diagram of the drive turret of the present invention;

FIG. 5 is a sectional view of the double locking bodies, the rotating body, the driving turntable and the stroke positioning seat, wherein the first locking body and the second locking body are spheres;

FIG. 6 is a force state diagram of the locking body of the present invention;

FIG. 7 is a cross-sectional view of the structure of the double locking bodies, the rotating body, the driving turntable and the stroke positioning seat of the present invention, wherein the first locking body and the second locking body are pin columns with spherical ends;

FIG. 8 is a sectional view of the double locking bodies, the rotating body, the driving turntable and the stroke positioning seat of the present invention, wherein the first locking body and the second locking body are pin columns with two conical ends;

FIG. 9 is a cross-sectional view of the structure of the double locking bodies, the rotating body, the driving turntable and the stroke positioning seat of the present invention, wherein the first locking body and the second locking body are pin columns which are transversely arranged;

FIG. 10 is an operational view of the present invention, illustrating the driving of the turntable to rotate the rotor in either forward or reverse direction, in which the forward driving end of the driving turntable toggles the first locking body to rotate the rotor in the forward direction, or the reverse driving end of the driving turntable toggles the second locking body to rotate the rotor in the reverse direction;

FIG. 11 is an operational view of the present invention illustrating the forward drive end of the drive turret rotated to a position corresponding to the forward locating recess of the travel locator;

FIG. 12 is a schematic operational view of the present invention illustrating the drive disks rotated to a forward overrun stroke;

FIG. 13 is an operational schematic of the present invention illustrating the reverse drive end of the drive turret rotated to a position corresponding to the reverse detent recess of the travel detent seat;

FIG. 14 is a schematic operational view of the present invention illustrating the drive disks rotated to a reverse override stroke;

FIG. 15 is a schematic structural view of a first overrunning groove and a second overrunning groove of the driving turntable, wherein the first overrunning groove and the second overrunning groove are annular grooves which are staggered in the radial direction of the driving turntable;

FIG. 16 is a schematic structural view of a first overrunning groove and a second overrunning groove of the driving turntable, wherein the first overrunning groove and the second overrunning groove are ring grooves with the same radius on the driving turntable;

FIG. 17 is a block diagram of the present invention with a first override slot and a second override slot along a cylindrical surface;

FIG. 18 is an exploded view of the present invention with the first override slot and the second override slot arranged along a cylindrical surface;

FIG. 19 is a schematic view of the first and second overrunning grooves of the drive disk of the present invention, the first overrunning groove being a circumferential groove extending along a spiral line;

FIG. 20 is an exploded view of the present invention, the first override groove being a circumferential groove extending along a spiral line;

FIG. 21 is a block diagram of a positive seal ball valve embodying the present invention with the ball in the closed position;

FIG. 22 is a block diagram of a positive seal ball valve embodying the present invention with the ball in the open position;

FIG. 23 is an exploded view of the ball, flap and planetary roller screw arrangement of a positive seal ball valve embodying the present invention;

FIG. 24 is a schematic view of the states of the helical drive wheel, the valve flap and the cage in a reset state for a positive seal ball valve employing the present invention;

FIG. 25 is a schematic view of the helical drive wheel, valve flap and cage states for a positive seal ball valve employing the present invention, with the planetary rollers and cage rotating through a reset stroke;

fig. 26 is a schematic view showing a state of a screw driving wheel and a cage using the forced sealing ball valve of the present invention, and the planetary rollers and the cage are positioned in a state where the forced sealing ball valve completes the forced sealing closing.

Detailed Description

As shown in fig. 1 to 6, a double-locking-body transmission operating device comprises a rotating body 10, wherein the rotating body is a rotating body which rotates in a reciprocating manner within a set stroke, the double-locking-body transmission operating device is provided with a driving turntable 20 and a stroke positioning seat 30, the driving turntable is provided with a first overrunning groove 21 and a second overrunning groove 22, the rotating body is provided with a first through hole 11 and a second through hole 12, a first locking body 13 is arranged in the first through hole, and a second locking body 14 is arranged in the second through hole; the stroke positioning seat is provided with a forward positioning concave hole 31 and a reverse positioning concave hole 32.

The first locking body moves back and forth along the first through hole, the first locking body can move into the first through hole and the first overrunning groove, and the first locking body can also be separated from the first overrunning groove and move into the first through hole and the forward positioning concave hole; the second locking body is along second through-hole reciprocating motion, the second locking body can move the second through-hole with between the reverse location shrinkage pool, the second locking body can also move the second through-hole with the second surmounts the inslot.

One end of the first overrunning groove is a forward driving end 23, one end of the second overrunning groove is a reverse driving end 24, and when the position of the first through hole corresponds to the forward driving end of the first overrunning groove, the position of the second through hole corresponds to the reverse driving end of the second overrunning groove (as shown in fig. 10, 11 or 13); the forward driving end drives the first locking body to drive the rotating body to rotate in a forward direction (R1 direction), and the reverse driving end drives the second locking body to drive the rotating body to rotate in a reverse direction (R2 direction); the forward driving end drives the first locking body to enter the forward positioning concave hole, and the reverse driving end drives the second locking body to enter the reverse positioning concave hole.

The rotor rotates when setting for the forward end of stroke (as shown in fig. 11), the position of first through-hole 11 corresponds to forward location shrinkage pool 31, the rotor rotates when setting for the reverse end of stroke (as shown in fig. 13), the position of second through-hole 12 corresponds to reverse location shrinkage pool 32.

As shown in fig. 6, the first locking body is provided with a first positioning acting surface 13a which is in contact with the positive positioning concave hole, the first positioning acting surface is a curved surface or an inclined surface, and when the first positioning acting surface is in contact with the positive positioning concave hole, a acting force F1 along the rotating direction of the rotating body and a acting force F2 along the axial direction of the first through hole are generated; the first locking body is provided with a first overrunning end acting surface 13b which is contacted with the end of the overrunning groove, the first overrunning end acting surface is a curved surface or an inclined surface, and when the first overrunning end acting surface is contacted with the end of the overrunning groove, acting force F3 along the rotating direction of the driving turntable and acting force F4 along the axial direction of the first through hole are generated; the same principle as that shown in fig. 6 is adopted, the second locking body is provided with a second positioning acting surface which is in contact with the reverse positioning concave hole, the second positioning acting surface is a curved surface or an inclined surface, and when the second positioning acting surface is in contact with the reverse positioning concave hole, acting force along the rotating direction of the rotating body and acting force along the axial direction of the second through hole are generated; the second locking body is provided with a second overrunning end acting surface which is in contact with the end of the overrunning groove, the second overrunning end acting surface is a curved surface or an inclined surface, and the second overrunning end acting surface generates acting force along the rotating direction of the driving turntable and acting force along the axial direction of the second through hole when in contact with the end of the overrunning groove.

As shown in fig. 4 and 15, the first and second overrunning grooves are annular grooves that are offset from each other in the radial direction of the drive rotor.

As shown in fig. 16, the first and second overrunning grooves are annular grooves of the same radius on the driving turntable.

The first and/or second override grooves are annular grooves extending along a spiral or helical line. As shown in fig. 19 and 20, the first override groove is a ring groove extending along a spiral line.

As shown in fig. 21 to 26, the double-locking-body transmission operating device is arranged on a positive-locking ball valve, the rotator is a valve rod gear protection cover 10 fixedly connected with a valve ball 40, the set stroke of the rotator is the rotation stroke of the valve ball, the forward end of the rotation stroke corresponds to the closed position of the valve ball, the reverse end of the rotation stroke corresponds to the open position of the valve ball, the stroke positioning seat is a valve ball upper pivot support plate 30, the valve rod 41 drives the driving dial 20 to rotate, the valve ball is provided with a valve flap 42, the valve flap is driven by a spiral driving wheel 44 to extend and retract from the valve ball, the spiral driving wheel drives the valve flap to move through a planetary roller thread device, and the planetary roller thread device is provided with a retainer 43; the driving turntable drives the spiral driving wheel to rotate.

In the rotation stroke of the valve ball, the forward driving end pulls the valve ball to rotate towards a closed position (such as an R1 direction shown in FIG. 10) through the first locking body, the driving rotary disc, the valve ball, the spiral driving wheel and the valve flap rotate synchronously, after the valve ball rotates to the closed position (such as a position shown in FIG. 11), the forward driving end of the first overrunning groove pushes the first locking body to enter the first through hole and the forward positioning concave hole, the driving rotary disc rotates forward relative to the valve ball, the second locking body moves in the second overrunning groove, the driving rotary disc drives the spiral driving wheel to rotate (such as an R1 direction shown in FIG. 12), and the valve flap extends towards a valve seat and is clamped with the valve seat; the driving rotary disc rotates in the opposite direction relative to the valve ball (the direction of R2 shown in fig. 12), the driving rotary disc drives the spiral driving wheel to rotate, the valve flap retracts towards the valve ball and is separated from the valve seat, after the reverse driving end of the second overrunning groove is contacted with the second locking body (the position shown in fig. 11), the reverse driving end drives the valve ball to rotate towards the opening position (the direction of R2 shown in fig. 10) through the second locking body, the driving rotary disc, the valve ball, the spiral driving wheel and the valve flap rotate synchronously, the first locking body enters the first through hole and the first overrunning groove, after the valve ball rotates to the opening position (the position shown in fig. 13), the reverse driving end pushes the second locking body to enter the second through hole and the reverse positioning concave hole, and the driving rotary disc rotates in the opposite direction relative to the valve ball, the first locking body moves in the first overrunning groove, the driving turntable drives the spiral driving wheel to rotate (in the direction of R2 shown in FIG. 14), and the retainer is reset.

The first embodiment is as follows:

referring to fig. 1, 2 and 3, a double-locking-body transmission operating device comprises a rotating body 10, a driving turntable 20 and a stroke positioning seat 30. The rotating body is a rotating body which rotates in a reciprocating manner within a set stroke. The driving turntable is coaxial with the rotating body and is arranged on the stroke positioning seat, and the rotating body is positioned between the driving turntable and the stroke positioning seat.

The driving turntable is provided with a first overrunning groove 21 and a second overrunning groove 22, the first overrunning groove and the second overrunning groove are annular grooves coaxial with the driving turntable, the first overrunning groove and the second overrunning groove are annular grooves staggered in the radial direction of the driving turntable, and the arc radius r1 of the first overrunning groove is smaller than the radius r2 of the second overrunning groove. One end of the first override slot is a forward drive end 23 and one end of the second override slot is a reverse drive end 24. The first override slot extends from the forward drive end in a direction opposite to the direction in which the second override slot extends from the reverse drive end, as shown in figure 4, the first override slot extending clockwise from the forward drive end 23 and the second override slot extending counterclockwise from the reverse drive end 24. In this embodiment, the cross sections of the first overrunning groove and the second overrunning groove are arc-shaped (as shown in fig. 5), and the cross sections of the first overrunning groove and the second overrunning groove are the same in size.

The rotator is a disk-shaped rotator, the rotator is provided with a first through hole 11 and a second through hole 12, the first through hole and the second through hole are through holes with the same diameter, the circumferential position of the first through hole corresponds to a first overrunning groove of the driving turntable, and the circumferential position of the second through hole corresponds to a second overrunning groove of the driving turntable. The position of the second through hole corresponds to the reverse drive end of the second override slot when the position of the first through hole corresponds to the forward drive end of the first override slot (as shown in fig. 10, 11 or 13).

The stroke positioning seat is provided with a forward positioning concave hole 31 and a reverse positioning concave hole 32, the forward positioning concave hole and the reverse positioning concave hole are spherical concave holes with the same size, the circumferential position of the forward positioning concave hole corresponds to a first through hole of the rotating body, and the circumferential position of the reverse positioning concave hole corresponds to a second through hole of the rotating body. When the rotating body rotates to the positive end point of the set stroke, the position of the first through hole corresponds to the positive positioning concave hole; when the rotating body rotates to the reverse end point of the set stroke, the position of the second through hole corresponds to the reverse positioning concave hole.

A first locking body 13 is arranged in the first through hole of the rotor and a second locking body 14 is arranged in the second through hole of the rotor. In this embodiment, the first locking body and the second locking body are both spheres. As shown in fig. 6, the first locking body can reciprocate along the first through hole, and the first locking body can move into the first through hole 11 and the first overrunning groove 21 (the first locking body shown by a solid line in fig. 6), and at this time, the first locking body is separated from the forward positioning concave hole. The first locking body is also capable of disengaging the first override slot and moving into the first through hole and the forward locating recess (shown in phantom in fig. 6 as the first locking body). Similarly, the second locking body can reciprocate along the second through hole, can move between the second through hole and the positive positioning concave hole, and can also move between the second through hole and the second overrunning groove.

The effect of the locking body (including first locking body and second locking body) is that bear the weight of the effort of drive end (surpassing the direction drive end in groove and second including first forward drive end that surpasss the groove) and location shrinkage pool (surpassing the direction drive end in groove and second including forward location shrinkage pool and reverse location shrinkage pool), make the drive end can promote the rotor through the locking body and rotate to two positive and negative directions respectively, can also receive the promotion of location shrinkage pool and drive end and remove in the through-hole (including first through-hole and second through-hole), alternate position between location shrinkage pool and drive end. The forward driving end drives the first locking body to drive the rotating body to rotate in the forward direction (R1 direction), and the reverse driving end drives the second locking body to drive the rotating body to rotate in the reverse direction (R2 direction).

The length d (namely the diameter of the first locking body) of the first locking body is greater than the length K of the first through hole, the lower part of the first locking body can protrude out of the rotating body and be kept in the first through hole and the first overrunning groove of the driving rotary disc, and the upper part of the first locking body can protrude out of the rotating body and be kept in the first through hole and the forward positioning concave hole of the stroke positioning seat. The second locking body of the present embodiment is a sphere which is the same as the first locking body, and similarly, the length of the second locking body is greater than the length of the second through hole, the second locking body can be held in the second through hole and the second overrunning groove, and the second locking body can also be held in the second through hole and the reverse positioning concave hole.

Because the first locking body is a spheroid, and positive location shrinkage pool is a spherical shrinkage pool that corresponds with the first locking body, and first locking body has a first location working face 13a with positive location shrinkage pool contact, and first location working face is spheroidal cambered surface. When the first positioning acting surface is contacted with the positive positioning concave hole, acting force F1 along the rotating direction of the rotating body and acting force F2 along the axial direction of the first through hole are generated. Wherein the acting force F1 stops the rotation of the rotating body, so that the rotating body is kept at the positive end point of the set stroke; force F2 pushes the first locking body out of the positive locating recess and into the first override slot.

The positive driving end of the first overrunning groove is an arc-shaped surface corresponding to the first locking body. The first locking body is also provided with a first overrunning end acting surface 13b which is contacted with the end head of the overrunning groove (namely the positive driving end of the first overrunning groove), the first overrunning end acting surface is a cambered surface of a sphere, and when the first overrunning end acting surface is contacted with the end head of the overrunning groove, acting force F3 along the rotating direction of the driving turntable and acting force F4 along the axial direction of the first through hole are generated. Wherein, effort F3 impels the rotor to rotate to the positive direction (R1 direction), effort F4 impels the first locking body to break away from first surpassing groove and enter the positive direction location shrinkage pool.

The same principle as that shown in fig. 6 is applied to the second locking body, which is provided with a second positioning action surface that contacts with the reverse positioning concave hole, the second positioning action surface is a spherical arc surface, and the second positioning action surface generates an action force along the rotation direction of the rotating body and an action force along the axial direction of the second through hole when contacting with the reverse positioning concave hole. The acting force along the rotating direction of the rotating body stops the rotating of the rotating body, so that the rotating body is kept at the reverse end point of the set stroke; and the acting force along the axial direction of the second through hole pushes the second locking body to be separated from the reverse positioning concave hole and enter the second overrunning groove. The second locking body is provided with a second overrunning end acting surface which is contacted with the end head of the overrunning groove (namely the reverse driving end of the second overrunning groove), the second overrunning end acting surface is a spherical cambered surface, and the second overrunning end acting surface generates acting force along the rotating direction of the driving turntable and acting force along the axial direction of the second through hole when being contacted with the end head of the overrunning groove. Wherein, the acting force along the rotating direction of the driving turntable pushes the rotating body to rotate towards the reverse direction (R2 direction), and the acting force along the axial direction of the second through hole pushes the second locking body to be separated from the second overrunning groove and enter the reverse positioning concave hole.

As shown in fig. 10, in the set stroke interval of the rotating body, the first locking body in the first through hole corresponds to the forward driving end of the first overrunning groove, and the second locking body in the second through hole corresponds to the reverse driving end of the second overrunning groove.

When the driving turntable rotates forwards (such as the direction of R1 in fig. 10), the forward driving end 23 of the first overrunning groove shifts the first locking body 13 and pushes the rotating body to rotate forwards through the first locking body, as shown in fig. 11, when the rotating body rotates to the forward end of the set stroke, the positions of the first through hole 11 and the first locking body 13 correspond to the forward positioning concave hole 31 of the stroke positioning seat, and at the same time, the reverse driving end 24 of the second overrunning groove also corresponds to the second through hole 12 and the second locking body 14 of the rotating body, as shown in fig. 11, the rotating body stops rotating due to the limitation of the set stroke, when the driving turntable continues to rotate forwards (direction of R1), the forward driving end of the first overrunning groove pushes the first locking body to move upwards, the end face of the driving turntable contacts with the first locking body, the first locking body is kept in the forward positioning concave holes of the first through hole and the stroke positioning seat, so that the locking between the rotating body and the stroke positioning seat is locked, and the rotating body is kept at the forward end position of the driving turntable continues to rotate, and the second overrunning groove (the stroke) is not larger than the maximum stroke angle of the second locking body α 2 in the forward positioning seat in the process of the forward positioning seat.

The driving dial may be rotated in a reverse direction (direction R2) after completing the forward overrunning stroke, and when the forward driving end of the first overrunning groove is rotated back to a first through hole position (i.e., corresponding to the first locking body) corresponding to the rotating body, the reverse driving end of the second overrunning groove is also rotated to a second through hole position (i.e., corresponding to the second locking body) corresponding to the rotating body, as shown in fig. 11. The driving turntable continues to rotate reversely, the reverse driving end of the second overrunning groove stirs the second locking body, and the rotating body is pushed to rotate reversely through the second locking body. The first locking body is pushed by the rotating body rotating in the reverse direction to be out of the forward positioning concave hole 31 of the stroke positioning seat, and enters the forward driving end of the first overrunning groove and rotates along with the driving turntable, namely the direction of R2 in fig. 10.

As shown in fig. 13, when the rotor rotates to the reverse end of the set stroke, the positions of the second through hole 12 and the second locking body 14 correspond to the reverse positioning concave hole 32, the rotor stops rotating due to the limitation of the set stroke, when the driving turntable continues to rotate reversely (in the direction of R2), the reverse driving end of the second overrunning groove pushes the second locking body to move upwards, the end surface of the driving turntable contacts with the second locking body, the second locking body is held in the reverse positioning concave hole of the second through hole and the stroke positioning seat, so that the rotor is locked with the stroke positioning seat, and the rotor is held at the reverse end position of the set stroke.

After the reverse overtaking stroke is completed, the driving turntable can rotate in the forward direction (R1 direction), and so on, the first locking body can drive the rotating body to rotate in the forward direction again, and then the driving turntable enters the forward overtaking stroke.

In this embodiment, the forward drive end 23 and the reverse drive end 24 of the drive dial are at the same radial location (as shown in fig. 4). In fact, the forward driving end and the reverse driving end of the driving turntable can be located at different radial positions as long as the forward driving end is kept to correspond to the first through hole of the rotating body and the direction driving end is kept to correspond to the second through hole of the rotating body.

The first overrunning groove and the second overrunning groove are annular grooves which are staggered in the radius direction of the driving turntable, the second locking body moves in the second overrunning groove in the forward overrunning stroke, the arc angle α 2 of the second overrunning groove limits the stroke angle of the forward overrunning stroke, the first locking body moves in the first overrunning groove in the reverse overrunning stroke, and the arc angle α 1 of the first overrunning groove limits the stroke angle of the reverse overrunning stroke, as shown in figure 15, in order to avoid that the first locking body falls into the other end 23a of the first overrunning groove in the forward overrunning stroke and the second locking body falls into the other end 24a of the second overrunning groove in the reverse overrunning stroke, the sum of the arc angle α 1 of the first overrunning groove and the arc angle α 2 of the second annular groove is less than 360 degrees.

The "forward direction" and "direction" described in this embodiment are relative concepts, and opposite definitions may be made as necessary.

This embodiment adopts two-way locking body and surpasss groove structure, makes the drive carousel accomplish the setting stroke drive to the rotor simultaneously, can accomplish one section overtravel stroke respectively outside two rotation stroke ends of rotor, can satisfy some mechanical motion's requirement, simplifies operation process, facilitates the use.

Example two:

referring to fig. 16, the double-locking-body transmission operating device comprises a rotating body 10, a driving turntable 20 and a stroke positioning seat 30. This embodiment is a structural alternative to the first embodiment.

In order to prevent the first locking body from falling into the second overrunning groove in the forward overrunning stroke and prevent the second locking body from falling into the first overrunning groove in the reverse overrunning stroke, an angle α 3 between a forward driving end 23 of the first overrunning groove and a reverse driving end 24 of the second overrunning groove is larger than an arc-shaped angle α 1 of the first overrunning groove and is also larger than an arc-shaped angle α 2 of the second overrunning groove, and in the forward overrunning stroke, after the first locking body is separated from the forward driving end, the maximum rotating angle of the driving turntable relative to the rotating body is not larger than the arc-shaped angle α 2 of the second overrunning groove, so that the first locking body cannot fall into the second overrunning groove.

The diameter of the driving turntable can be reduced by the embodiment, and the structural requirements of some mechanical devices are met.

Example three:

referring to fig. 5, the present embodiment is a structural alternative of the first embodiment.

In addition to the first lock using the ball according to the first embodiment, the first lock having another structure may be used.

As shown in fig. 7, the first locking body 13a employs a pin having spherical ends. The second locking body also adopts the same pin with spherical two ends as the first locking body.

As shown in fig. 8, the first locking body 13b is a pin with two conical ends, the forward positioning concave hole 31 of the stroke positioning seat is a conical concave hole corresponding to the first locking body, the first overrunning groove 21 is a conical ring groove with a cross section corresponding to the first locking body, and the forward driving end of the first overrunning groove is an inclined surface corresponding to the first locking body. The second locking body also adopts the same pin with conical two ends as the first locking body.

As shown in fig. 9, the first locking body 13c is a pin arranged horizontally (the axis of the pin is perpendicular to the axis of the rotating body), the stroke positioning seat is provided with a forward positioning concave hole 31 which is a cylindrical concave hole corresponding to the first locking body, the first overrunning groove 21 is a square ring groove with a cross section corresponding to the first locking body, and the forward driving end of the first overrunning groove is an arc surface or an inclined surface corresponding to the first locking body. The second locking body also employs the same laterally disposed pins as the first locking body.

Example four:

referring to fig. 17 and 18, the double-locking-body transmission operating device comprises a rotating body 10, a driving turntable 20 and a stroke positioning seat 30. This embodiment is a structural alternative to the first embodiment.

In this embodiment, the driving turntable is provided with a shaft sleeve 25, and the first overrunning groove 21 and the second overrunning groove 22 are arranged along the cylindrical surface of the shaft sleeve. The rotator is provided with a limit stop 15, a first through hole 11 and a second through hole 12 are arranged on the limit stop, and the axes of the first through hole 11 and the second through hole 12 are perpendicular to the axis of the rotator. The stroke positioning seat is provided with a shaft hole 33, and the positive positioning concave hole 31 and the reverse positioning concave hole 32 are arranged in the shaft hole 33.

The limit stop 15 is positioned between the shaft hole 33 of the stroke positioning seat and the shaft sleeve 25 of the driving turntable.

In the implementation, the planar arrangement of the overrunning grooves (including the first overrunning groove and the second overrunning groove) is changed into the cylindrical arrangement, so that the same effect as that of the device in the first embodiment can be achieved.

In addition, the shaft hole 33 of the stroke positioning seat is provided with a radial stepped hole 34, and the limit stopper 15 touches both ends of the stepped hole 34 in the rotating process to control the rotation of the rotating body within a set stroke.

Example five:

referring to fig. 19 and 20, a double-locking-body transmission operating device is a structural alternative of the first embodiment.

In this embodiment, the first overrunning groove 21 of the drive disk is a circular groove extending along a spiral line. In order to enable the first locking body 13 to move along the first overrunning groove, the first through hole 11 of the rotating body is a long hole extending in the radial direction.

The structure of this embodiment makes first locking body can move longer distance along first surpassing the groove, increases the reverse overtaking stroke of drive carousel.

Similarly, the second overrunning groove 22 of the driving turntable can be made into a ring groove extending along a vortex line, and the second through hole 12 of the rotating body can be made into a long hole extending along the radial direction. Thereby increasing the forward overtravel of the drive dial.

Still further, referring to the principle of this embodiment, the fourth embodiment may be structurally replaced by forming the first overrunning groove or the second overrunning groove as a circular groove extending along a spiral line. The same effect can be achieved by making the first through hole or the second through hole of the rotating body into a long hole extending in the axial direction.

Example six:

referring to fig. 21 to 26, a positive seal ball valve includes a ball 40 and a stem 41. The valve ball is provided with a flap 42 and a helical drive wheel 44. The valve rod drives the valve ball to rotate, the valve rod also drives the spiral driving wheel to rotate relative to the valve ball, the spiral driving wheel drives the valve clack to jack up and retract when rotating relative to the valve ball, and forced sealing of the ball valve is achieved when the valve clack jacks up the valve seat 45.

The working mode of the forced sealing ball valve is as follows: during closing operation, the valve rod operates the valve ball and the valve clack to rotate simultaneously, when the valve ball rotates to a closing position, the valve ball stops rotating, the spiral driving wheel rotates forwards relative to the valve ball, and the valve clack is pushed to extend out of the valve ball and is pressed on the valve seat to realize forced sealing. In the opening process of the ball valve, the spiral driving wheel rotates reversely relative to the valve ball to drive the valve clack to be separated from the valve seat, then the valve ball and the valve clack rotate simultaneously, and the valve ball rotates to an opening position.

In order to reduce the operating torque of the valve stem when the positive seal ball valve is operated, the helical drive wheel drives the valve flap through a planetary roller screw arrangement. The conventional planetary roller screw device needs a track changing groove, and for a forced sealing ball valve, a valve clack only moves in a small stroke interval, the rotation angle of a driving screw during working is small, and the track changing groove is no longer a necessary structure. However, according to application and experiments, the planetary roller screw device has the defects that in the reciprocating rotation process of the planetary roller screw device, due to factors such as manufacturing precision and working environment, the precise position relation between the planetary roller and the external thread and the internal thread cannot be ensured in the movement process of the planetary roller, and some rotation angle errors can be generated, namely, each time the valve ball body rotates to the opening position, the planetary roller cannot be reset to the same position, the rotation angle errors accumulated after repeated reciprocating rotation enable the planetary roller and the retainer to generate axial offset, and when the axial offset is accumulated to a certain degree, the retainer can press the external thread component or the internal thread component to prevent the normal rotation of the external thread component or the internal thread component, and even enable the operation of the ball valve to be invalid.

In order to solve the technical problem, the forced sealing ball valve of the embodiment adopts a retainer resetting planetary roller thread device. The spiral driving wheel is provided with external threads, and the valve clack is provided with internal threads. Between the external thread and the internal thread a plurality of planet rollers 46 are provided, which are arranged between said external thread and internal thread by means of a cage 43. The two ends of the retainer are respectively a first end face and a second end face, and the first end face and the second end face of the retainer are spiral end faces. The spiral end faces of the first end face and the second end face are spiral faces corresponding to the spiral lines of the external threads or the internal threads. The spiral surface of the first end surface forms a first convex edge 47 at the position of one rotation, and the spiral surface of the second end surface forms a second convex edge 48 at the position of one rotation. The first and second convex edges are oppositely oriented in a circumferential direction of the cage. The screw drive wheel is provided with a first stop 49 which is a pin projecting from the end face of the externally threaded part. The flap is provided with a second stop 50 which is also a pin projecting from the end face of the internally threaded part. The first touch block touches the first convex edge in the circumferential direction of the retainer, and the second touch block touches the second convex edge in the circumferential direction of the retainer. Since the opening process is non-bearing rotation for the planetary roller screw device, the planetary rollers can slide by utilizing the clearance between the external threads and the internal threads while rolling, and the retainer and the planetary rollers can return to the working initial position. This makes the first stop of the screw driving wheel or the second stop of the valve clack reset the retainer to the same position each time the opening operation of the forced sealing ball valve is completed.

In the original design, when the forced sealing ball valve is opened, the spiral driving wheel firstly rotates reversely relative to the valve ball to drive the valve clack to separate from the valve seat and recover the position contacted with the valve ball, then the valve ball and the valve clack rotate simultaneously, and the valve ball rotates to the opening position. The problem that this kind of design exists is, valve clack is in the closed position of valve ball and is withdrawn to the position of contacting with the valve ball, and the valve clack still is bearing the pressure of pipeline this moment to there is pressure between planet roller and external screw thread and the internal thread, can't produce the clearance slip between planet roller and external screw thread and the internal thread, and when first piece and the second piece that bumps stir the holder and reset, need exert huge effort, make the reset load increase of holder, or damage planet roller screw thread device, holder and bump.

In the technical scheme of this embodiment, in the closing process of ball valve, the valve clack is ejecting a small distance earlier, and then valve ball and valve clack rotate simultaneously again, and when the valve ball rotated to the closed position, the valve ball stopped rotating, and the spiral drive wheel rotated for the valve ball forward, and the valve clack was ejecting and the roof pressure realized forcing the sealed closing of ball valve on the disk seat. In the opening process of the ball valve, the spiral driving wheel rotates reversely relative to the valve ball, the valve clack is driven to be separated from the valve seat, after the valve clack is separated from the valve seat, the valve ball and the valve clack rotate simultaneously, and after the valve ball rotates to the opening position, the spiral driving wheel rotates reversely relative to the valve ball again, so that the valve clack is recovered to the position contacted with the valve ball body, and the valve clack is reset. The retainer is in one-way contact with the first collision block or the second collision block due to axial deviation of the retainer accumulated in the valve closing and opening processes, so that the retainer is in one-way locking with the spiral driving wheel or the valve clack.

This requires an operating device for a positive seal ball valve to enable two-stage actuation of the flap: one section is that the valve clack is operated to reciprocate towards the valve seat at the closing position of the valve ball, and the valve clack is clasped with the valve seat during closing operation and separated from the valve seat during opening operation. The other section is that the valve clack is operated to move on the valve ball in a telescopic way at the opening position of the valve ball, and the valve clack extends out of the valve ball for a certain distance when the valve ball is closed, so that the planet roller and the retainer generate a reset stroke; when the valve is opened, the valve clack is retracted to the position contacting with the valve ball by the reset stroke, and the retainer is reset in the non-bearing state.

The forced sealing ball valve of the embodiment adopts the double-locking-body transmission operating device of the embodiment I. The rotating body in the double locking body transmission operating device is a valve rod gear protective cover 10 which is arranged at the upper part of the valve ball and fixedly connected with the valve ball, the stroke positioning seat in the double locking body transmission operating device is an upper bearing seat 30 which is arranged on the valve body, and the forced sealing ball valve is also provided with a lower bearing seat 51 which can control the valve ball to rotate in a set stroke. The valve rod 41 rotates the driving dial 20. The drive disk is a gear disk and the helical drive wheel 44 is also a gear wheel, and the drive disk drives the helical drive wheel to rotate through the intermediate gear 52.

According to the double lock transmission operating device of the first embodiment, the rotation direction of the valve rod in the closing operation corresponds to the forward rotation direction R1 of the driving dial, and the rotation direction of the valve rod in the opening operation corresponds to the reverse rotation direction R2 of the driving dial.

The state of the forced sealing ball valve in the open position is shown in fig. 22, and the state of the helical drive wheel, the flap and the cage is shown in fig. 24. The flap is retracted into contact with the valve ball and the cage is held in the reset position by either the first catch 49 of the helical drive wheel or the second catch 50 of the flap. The upper part of the second locking body protrudes out of the rotating body and is kept in the second through hole and a reverse positioning concave hole of the upper bearing seat (stroke positioning seat), so that the valve ball and the upper bearing seat are locked, and the first locking body is arranged in the first overrunning groove in the reverse overrunning stroke of the driving turntable (as shown in fig. 14).

During the closing operation of the forced sealing ball valve, the valve rod rotates towards the closing direction (R1 direction), the valve rod drives the driving turntable to rotate in the forward direction (R1 direction) in the reverse overrunning stroke, in the process, the driving turntable drives the spiral driving wheel to rotate in the forward direction relative to the valve ball, and the valve clack is separated from the valve ball, namely the valve clack extends out of the valve ball for a certain distance, but the extending valve clack cannot influence the rotation of the valve ball. The planet roller and the retainer can generate a section of reset stroke, and the angle of the reset stroke is not smaller than the rotation angle error generated by the planet roller and the retainer.

When the forward driving end of the first overrunning groove is rotated to a first through-hole position (i.e., corresponding to the first locking body) corresponding to the valve-stem gear protective cover (rotating body), as shown in fig. 13. The driving turntable continues to rotate in the forward direction, the forward driving end of the first overrunning groove stirs the first locking body, the valve rod gear protection cover is pushed by the first locking body to rotate in the forward direction, the valve ball rotates in the closing direction, the second locking body is separated from the reverse positioning concave hole of the upper bearing seat under the pushing of the valve rod gear protection cover, and the locking between the valve ball and the upper bearing seat is released until the valve ball enters the reverse driving end of the second overrunning groove.

The valve rod continues to rotate towards the closing direction (R1 direction), the valve rod drives the driving turntable to rotate in the forward direction (such as the R1 direction in fig. 10), the forward driving end of the first overrunning groove stirs the first locking body, the first locking body pushes the valve rod gear protection cover 10 (rotating body) to rotate in the forward direction, the valve ball rotates towards the closing direction, when the valve ball rotates to the closing position (the forward end of the set stroke, such as the position shown in fig. 11), the valve ball stops rotating due to the limitation of the set stroke, when the driving turntable continues to rotate in the forward direction (the R1 direction), the forward driving end of the first overrunning groove pushes the first locking body to move upwards, the upper portion of the first locking body protrudes out of the rotating body and is kept in the forward positioning concave hole 31 of the first through hole and the upper bearing seat 30 (stroke positioning seat), locking between the valve ball and the upper bearing seat is achieved, and the valve ball is kept at the closing position. The driving turntable continues to rotate forwards and can rotate for a forward overtaking stroke, as shown in fig. 12, in the process, the driving turntable drives the spiral driving wheel to rotate forwards relative to the valve ball, the valve clack is ejected out and pressed on the valve seat to be clamped with the valve seat, the sealing closing of the forced sealing ball valve is realized, the state of the forced sealing ball valve is shown in fig. 21, and the states of the spiral driving wheel, the valve clack and the retainer are shown in fig. 26.

During the opening operation of the forced sealing ball valve, the valve rod rotates towards the closing direction (R2 direction), the valve rod drives the driving turntable to rotate reversely (R2 direction) in the forward overrunning stroke, in the process, the driving turntable drives the spiral driving wheel to rotate reversely relative to the valve ball, the spiral driving wheel drives the valve clack to separate from the valve seat (to separate from the clasping with the valve seat), the planet roller and the retainer also rotate along with the valve clack, and because the valve clack does not rotate to the reset state (namely, the state of contacting with the valve ball), the retainer is positioned outside the reset stroke, the retainer can not touch the first collision block 49 of the spiral driving wheel or the second collision block 50 of the valve clack, and the retainer is prevented from being pushed under the condition that pressure exists between the planet roller and the external. The states of the helical drive wheel, the flap and the cage are shown in fig. 25.

When the forward driving end of the first overrunning groove is rotated back to the position corresponding to the first through hole of the valve-stem gear protection cover (rotor) (i.e., corresponding to the first locking body), the reverse driving end of the second overrunning groove is also rotated to the position corresponding to the second through hole of the valve-stem gear protection cover (rotor) (i.e., corresponding to the second locking body), as shown in fig. 11. The driving turntable continues to rotate reversely, the reverse driving end of the second overrunning groove shifts the second locking body, the valve rod gear protection cover is pushed by the second locking body to rotate reversely (as shown in the direction of R2 in fig. 10), and meanwhile, under the pushing action of the valve rod gear protection cover, the first locking body is separated from the forward positioning concave hole of the upper bearing seat, the locking between the valve ball and the upper bearing seat is released, and the valve ball is enabled to rotate towards the opening direction.

As shown in fig. 13, when the valve ball is rotated to the open position (the reverse end of the set stroke), the positions of the second through hole and the second locking body correspond to the reverse positioning concave hole 32 of the upper bearing seat (stroke positioning seat). The valve ball stops rotating due to the limitation of the set stroke, when the driving turntable continues to rotate reversely (in the direction of R2), the reverse driving end of the second overrunning groove can push the second locking body to move upwards, the upper part of the second locking body protrudes out of the rotating body and is kept in the second through hole and the reverse positioning concave hole of the upper bearing seat, so that the locking between the valve ball and the upper bearing seat is realized, and the valve ball is kept at the opening position (namely the reverse end position of the set stroke). And the driving turntable continues to rotate reversely, rotates for a section of reverse overrun stroke, and in the process, the driving turntable drives the spiral driving wheel to rotate reversely relative to the valve ball in the reset stroke again, so that the reset stroke of the retainer is completed in a non-bearing state. The spiral driving wheel drives the valve clack to retract to the position contacting with the valve ball, the planet roller and the retainer rotate reversely in the reset stroke, if the operation rotation angle of the planet roller and the retainer is wrong, the first collision block 49 of the spiral driving wheel or the second collision block 50 of the valve clack can reset the retainer, the state of the spiral driving wheel, the valve clack and the retainer is forcedly sealed as shown in figure 22, and the state of the spiral driving wheel, the valve clack and the retainer is shown in figure 24.

In the embodiment, the double-locking-body transmission operating device is applied to a forced sealing ball valve, the spiral driving wheel is firstly driven to enable the valve clack and the valve seat to be separated from each other and to be clasped, and after the valve ball rotates to an opening position, the spiral driving wheel is driven again to complete the resetting of the valve clack and the retainer; the forced sealing ball valve can successfully complete the reset operation of the retainer in the opening process.

Example seven:

a forced sealing ball valve. This embodiment is a structural alternative to the fifth embodiment.

Referring to fig. 17 and 18, the positive seal ball valve of the present embodiment employs the double locking body transmission operation device of the fourth embodiment.

Claims

1. A double-locking-body transmission operating device comprises a rotating body and is characterized in that the rotating body rotates in a reciprocating manner within a set stroke, the double-locking-body transmission operating device is provided with a driving turntable and a stroke positioning seat, the driving turntable is provided with a first overrunning groove and a second overrunning groove, the rotating body is provided with a first through hole and a second through hole, a first locking body is arranged in the first through hole, and a second locking body is arranged in the second through hole; the stroke positioning seat is provided with a forward positioning concave hole and a reverse positioning concave hole.

2. The dual locking body actuator of claim 1 wherein the first locking body reciprocates along the first through hole, the first locking body being movable into the first through hole and the first override slot, the first locking body being further movable out of the first override slot into the first through hole and the forward locating recess; the second locking body is along second through-hole reciprocating motion, the second locking body can move the second through-hole with between the reverse location shrinkage pool, the second locking body can also move the second through-hole with the second surmounts the inslot.

3. The double-locking-body transmission operating device as claimed in claim 2, wherein one end of the first overrunning groove is a forward driving end, one end of the second overrunning groove is a reverse driving end, and when the position of the first through hole corresponds to the forward driving end of the first overrunning groove, the position of the second through hole corresponds to the reverse driving end of the second overrunning groove; the forward driving end is used for stirring the first locking body to drive the rotating body to rotate in the forward direction, and the reverse driving end is used for stirring the second locking body to drive the rotating body to rotate in the reverse direction; the forward driving end drives the first locking body to enter the forward positioning concave hole, and the reverse driving end drives the second locking body to enter the reverse positioning concave hole.

4. The dual lock transmission actuator as claimed in claim 2, wherein the first through hole is located at a position corresponding to the forward positioning recess when the rotor is rotated to the forward end of the set stroke, and the second through hole is located at a position corresponding to the reverse positioning recess when the rotor is rotated to the reverse end of the set stroke.

5. The transmission operating device of claim 1, wherein the first locking body is provided with a first positioning acting surface which is in contact with the positive positioning concave hole, the first positioning acting surface is a curved surface or an inclined surface, and when the first positioning acting surface is in contact with the positive positioning concave hole, acting force along the rotating direction of the rotating body and acting force along the axial direction of the first through hole are generated; the first locking body is provided with a first overrunning end acting surface which is contacted with the end of the overrunning groove, the first overrunning end acting surface is a curved surface or an inclined surface, and the first overrunning end acting surface generates acting force along the rotating direction of the driving turntable and acting force along the axial direction of the first through hole when being contacted with the end of the overrunning groove; the second locking body is provided with a second positioning action surface which is in contact with the reverse positioning concave hole, the second positioning action surface is a curved surface or an inclined surface, and the second positioning action surface generates an action force along the rotating direction of the rotating body and an action force along the axial direction of the second through hole when being in contact with the reverse positioning concave hole; the second locking body is provided with a second overrunning end acting surface which is in contact with the end of the overrunning groove, the second overrunning end acting surface is a curved surface or an inclined surface, and the second overrunning end acting surface generates acting force along the rotating direction of the driving turntable and acting force along the axial direction of the second through hole when in contact with the end of the overrunning groove.

6. A double-locking body transmission operating device according to claim 1, wherein the first overrunning groove and the second overrunning groove are annular grooves which are staggered from each other in a radial direction of the driving turntable.

7. A double-locking body transmission operating device according to claim 1, wherein the first overrunning groove and the second overrunning groove are annular grooves of the same radius on the drive disk.

8. A double-locking body transmission operating device according to claim 1, wherein the first and/or second override grooves are annular grooves extending along a spiral or helical line.

9. A double-locking body transmission operating device according to claim 1, wherein the double-locking body transmission operating device is provided on a positive-sealing ball valve, the rotator is a valve stem gear protection cover fixedly connected with a valve ball, the set stroke of the rotator is a rotation stroke of the valve ball, a forward end of the rotation stroke corresponds to a closed position of the valve ball, a reverse end of the rotation stroke corresponds to an open position of the valve ball, the stroke positioning seat is a pivot support plate on the valve ball, the valve stem drives the drive dial to rotate, the valve ball is provided with a valve flap, the valve flap is driven by a screw drive wheel to extend and retract from the valve ball, the screw drive wheel drives the valve flap to move through a planetary roller screw thread device, and the planetary roller screw thread device is provided with a retainer; the driving turntable drives the spiral driving wheel to rotate.

10. The double-locking-body transmission operating device as claimed in claim 9, wherein in the rotation stroke of the valve ball, the forward driving end pulls the valve ball to rotate towards the closed position through the first locking body, the driving rotary disc, the valve ball, the spiral driving wheel and the valve flap rotate synchronously, after the valve ball rotates to the closed position, the forward driving end of the first overrunning groove pushes the first locking body to enter the first through hole and the forward positioning concave hole, the driving rotary disc rotates forward relative to the valve ball, the second locking body moves in the second overrunning groove, the driving rotary disc drives the spiral driving wheel to rotate, and the valve flap extends towards the valve seat and is clamped with the valve seat; the driving turntable rotates in the opposite direction relative to the valve ball, the driving turntable drives the spiral driving wheel to rotate, the valve clack retracts towards the valve ball and is separated from the valve seat, after the reverse driving end of the second overrunning groove is contacted with the second locking body, the reverse driving end drives the valve ball to rotate towards the opening position through the second locking body, the driving turntable, the valve ball, the spiral driving wheel and the valve clack rotate synchronously, the first locking body enters the first through hole and the first overrunning groove, after the valve ball rotates to the opening position, the reverse driving end pushes the second locking body to enter the second through hole and the reverse positioning concave hole, the driving turntable rotates in the opposite direction relative to the valve ball, the first locking body moves in the first overrunning groove, and the driving turntable drives the spiral driving wheel to rotate, and the cage is reset.