WO2020038271A1 - Dual-locking body transmission operation device - Google Patents

Abstract

A dual-locking body transmission operation device, comprising a rotating body (10), a driving rotary plate (20), and a stroke positioning seat (30). The rotating body (10) reciprocatingly rotates within a set stroke; the driving rotary plate (20) is provided with a first overrunning slot (21) and a second overrunning slot (22); the rotating body (10) is provided with a first through hole (11) and a second through hole (12); a first locking body (13) is provided in the first through hole (11), and a second locking body (14) is provided in the second through hole (12); the stroke positioning seat (30) is provided with a forward positioning recessed hole (31) and a backward positioning recessed hole (32).

Description

Double-locking body transmission operation device

Cross-reference to related applications

This application claims the priority of Chinese Patent Application No. 201810959151.8 filed in China on August 22, 2018, the entire contents of which are hereby incorporated by reference.

Technical field

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

Background technique

The compulsory sealing ball valve is provided with a compulsory sealing device. When the compulsory sealing ball valve is closed, the compulsory sealing device makes the valve ball and the valve seat entangle, and closes the gap between the valve ball and the valve seat to achieve a forced seal. One of the compulsory sealing devices is to set a valve disc on the valve ball. When the valve ball rotates to the closed position, the valve disc protrudes from the valve ball to the valve seat and engages the valve ball. In order to adapt to the application in high pressure pipelines, a forced seal ball valve uses a spiral drive wheel to drive the valve flap through a planetary roller screw device. The planetary roller screw device is provided with a cage for planetary rollers. The planetary roller screw device does not need to be provided with a planetary roller rail changing mechanism during a small rotation stroke. Instead, each time the ball valve is opened, the screw driving wheel or the valve flap dials the cage to reset. When the ball valve is opened, the screw drive wheel first drives the valve disc to retract, and closes the valve ball to complete the reset of the valve disc. When the valve disc is reset, the screw drive wheel or the valve disc toggles the cage to reset, and then the valve ball starts from Turn the closed position towards the open position. However, a technical problem faced by such a cage reset mechanism is that when the valve ball is in the closed position, the possible working condition is that there is still a high pressure difference upstream and downstream of the valve, which causes the valve disc, spiral drive wheel and planetary roller There is a huge force between them, and the spiral drive wheel or valve disc needs to push the cage to drive the planetary roller to slide between the valve disc and the spiral drive wheel in the process of resetting the cage. The above force will increase. The load of each part during the resetting process of the large toggle cage greatly reduces the life of the cage reset mechanism.

Summary of the Invention

The purpose of the present disclosure is to propose a technical solution of a double-locking body transmission operating device, so that the driving turntable can continue to complete a rotation stroke beyond both ends of the setting stroke of the rotating body, thereby solving the operation and driving problems faced by some mechanical devices.

In order to achieve the above object, the technical solution of the present disclosure is: a double-locking-body transmission operation device including a rotating body, the rotating body is a rotating body that reciprocates within a set stroke, and the double-locking-body transmission operation device is provided There are a driving turntable and a stroke positioning seat. The driving turntable is provided with a first overrunning slot and a second overrunning slot. The rotating body is provided with a first through hole and a second through hole. The first through hole is provided with a first through hole. A locking body is provided with a second locking body 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, and the first locking body can move into the first through hole and the first overtaking groove, and the first locking body further Can move away from the first overrunning groove and move into the first through hole and the positive positioning recessed hole; the second locking body can move back and forth along the second through hole, and the second locking body can Moving between the second through hole and the reverse positioning recessed hole, the second locking body can also move into the second through hole and the second overtaking groove.

Furthermore, one end of the first overrunning slot is a forward driving end, and one end of the second overrunning slot is a reverse driving end. The position of the first through hole corresponds to the forward driving of the first overrunning slot. At the end, the position of the second through hole corresponds to the reverse drive end of the second overrunning groove; the forward drive end dials the first locking body to drive the rotating body to rotate forward, and The reverse driving end dials the second locking body to drive the rotating body to rotate in the reverse direction; the forward driving end dials the first locking body into the forward positioning recess, and the reverse driving end And turning the second locking body into the reverse positioning recess.

Further, when the rotating body is rotated to the positive end of the set stroke, the position of the first through hole corresponds to the positive positioning recessed hole, and the rotating body is rotated to the At the reverse end, the position of the second through hole corresponds to the reverse positioning recessed hole.

Furthermore, the first locking body is provided with a first positioning action surface in contact with the positive positioning recess, the first positioning action surface is a curved surface or an inclined surface, and the first positioning action surface is in contact with the positive positioning A force acting in the vertical direction of the first through-hole axis and a force acting in the direction of the first through-hole axis are generated when contacting the positioning recessed hole; the first locking body is provided with a first contacting the end of the overtaking groove. A surpassing end action surface, the first surpassing end action surface is a curved surface or an inclined surface, and when the first surpassing end action surface is in contact with the end of the surpassing groove, a force acting along a vertical direction along the first through-hole axis and Acting force in the axial direction of the first through hole; the second locking body is provided with a second positioning action surface that is in contact with the reverse positioning recess, the second positioning action surface is a curved surface or an inclined surface, and the second When the positioning action surface contacts the reverse positioning recessed hole, a force acting in a direction perpendicular to the axis of the second through-hole and a force acting in the direction of the axis of the second through-hole are generated; the second locking body is provided with the overtaking groove. The second transacting surface of the tip contact, so The second overrunning surface is a curved surface or an inclined surface. When the second overrunning surface is in contact with the end of the overrunning groove, a force acting in a vertical direction of the second through-hole axis and a force along the second through-hole axis are generated. Force.

Furthermore, the first overrunning groove and the second overrunning groove are annular grooves that are staggered from each other in a radial direction of the driving turntable.

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

Further, the first overrunning groove and / or the second overrunning groove are annular grooves extending along a spiral line or a spiral line.

Further, the double-locking body transmission operating device is provided on a forced-sealed ball valve, the rotating body is a valve stem gear protective cover fixedly connected to the valve ball, and the set stroke of the rotating body is the rotating 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, and the stroke positioning seat is a bearing seat on the valve ball, and the valve stem Drive the driving turntable to rotate, the valve ball is provided with a valve disc, the valve disc is extended and retracted from the valve ball by a spiral drive wheel, and the spiral drive wheel drives the valve disc to move through a planetary roller thread device, The planetary roller screw device is provided with a holder; the driving turntable drives the spiral driving wheel to rotate.

Further, during the rotation stroke of the valve ball, the forward driving end turns the valve ball to a closed position through the first locking body, and the driving turntable, the valve ball, the screw driving wheel and the valve The flaps rotate together, and after the valve ball rotates to the closed position, the positive driving end of the first overrunning slot pushes the first locking body into the first through hole and the positive positioning concave hole, and the driving turntable The second locking body moves in the second overrunning groove with respect to the valve ball rotating in a forward direction, the driving turntable drives the screw driving wheel to rotate, and the valve flap extends toward the valve seat and contacts the valve. The drive turntable rotates in the opposite direction with respect to the valve ball, the drive turntable drives the screw drive wheel to rotate, the valve disc retracts toward the valve ball direction, and disengages from the valve seat's engagement with the valve seat. After the reverse drive ends of the two overrunning grooves contact the second lock body, the reverse drive ends turn the valve ball to the open position through the second lock body, and the drive turntable and the valve ball , The spiral drive wheel and the valve disc rotate together, said A first locking body enters the first through hole and a first overrunning groove, and after the valve ball rotates to an open position, the reverse driving end pushes the second locking body into the second through hole and a reverse In the positioning recess, the driving turntable rotates in a reverse direction relative to the valve ball, the first locking body moves in the first overtaking groove, the driving turntable drives the spiral driving wheel to rotate, and the The cage is reset.

The beneficial effect of the present disclosure is that the two-way locking body and the overrunning groove structure are adopted, so that the driving turntable can complete the set stroke driving of the rotating body and simultaneously complete a rotating stroke outside the two rotating stroke ends of the rotating body. ; When applied to a forced-sealed ball valve, the screw drive wheel can be driven to disengage the valve disc from the valve seat. During the rotation of the valve ball to the open position, the pressure of the valve cavity and the pipeline gradually balances. After the ball reaches the open position, the screw drive wheel Continue to rotate to complete the reset of the valve flap and the cage; so that the forced sealing ball valve can smoothly complete the reset operation of the cage during the opening process.

The disclosure is described in detail below with reference to the drawings and embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural diagram of a double-locking body transmission operation device provided by some embodiments of the present disclosure;

2 is an exploded view of the double-locking body transmission operating device in FIG. 1;

FIG. 3 is an arrow A view of FIG. 2;

4 is a structural diagram of a driving turntable provided by some embodiments of the present disclosure;

5 is a structural cross-sectional view of a double locking body and a rotating body, a driving turntable, and a stroke positioning base provided by some embodiments of the present disclosure; the first locking body and the second locking body are spheres;

6 is a force state diagram of a locking body provided by some embodiments of the present disclosure;

7 is a structural cross-sectional view of a double locking body and a rotating body, a driving turntable, and a stroke positioning base according to some embodiments of the present disclosure; the first locking body and the second locking body are pins with spherical ends;

8 is a cross-sectional view of a structure of a double locking body and a rotating body, a driving turntable, and a stroke positioning base provided by some embodiments of the present disclosure. The first locking body and the second locking body are pins with conical ends at both ends;

9 is a cross-sectional view of a structure of a double locking body and a rotating body, a driving turntable, and a stroke positioning base provided by some embodiments of the present disclosure, where the first locking body and the second locking body are laterally disposed pins;

FIG. 10 is an operation schematic diagram of a double-locking body transmission operating device provided by some embodiments of the present disclosure, illustrating that the driving turntable drives the rotating body to rotate forward or reverse. In this state, the forward driving end of the driving turntable dials the first Lock the body, make the rotating body rotate in the forward direction, or drive the reverse drive end of the turntable to turn the second locking body to rotate the rotating body in the reverse direction;

FIG. 11 is an operation schematic diagram of a double-locking body transmission operating device provided by some embodiments of the present disclosure, illustrating that the forward driving end of the driving turntable is rotated to a position corresponding to the forward positioning recess of the stroke positioning seat;

FIG. 12 is an operation schematic diagram of a double-locking body transmission operating device provided by some embodiments of the present disclosure, which schematically drives the turntable to rotate to a forward overshooting stroke;

FIG. 13 is an operation schematic diagram of a double-locking body transmission operating device provided by some embodiments of the present disclosure, illustrating that the reverse driving end of the driving turntable is rotated to the position of the reverse positioning recess corresponding to the stroke positioning seat;

FIG. 14 is an operation schematic diagram of a double-locking body transmission operating device provided by some embodiments of the present disclosure, schematically driving a turntable to rotate to a reverse overtravel stroke; FIG.

15 is a schematic structural diagram of a first overrunning groove and a second overrunning groove of a driving turntable according to some embodiments of the present disclosure. The first and second overrunning grooves are annular grooves staggered from each other in a radial direction of the driving turntable;

16 is a schematic structural diagram of a first overrunning groove and a second overrunning groove of a driving turntable according to some embodiments of the present disclosure. The first and second overrunning grooves are ring grooves of the same radius on the driving turntable;

17 is a structural diagram of a double-locking body transmission operating device provided by some embodiments of the present disclosure, where a first overrunning groove and a second overrunning groove are provided along a cylindrical surface;

18 is an exploded view of a double-locking body transmission operating device provided by some embodiments of the present disclosure, where a first overrunning groove and a second overrunning groove are provided along a cylindrical surface;

19 is a schematic structural diagram of a first overrunning groove and a second overrunning groove of a driving turntable according to some embodiments of the present disclosure. The first overrunning groove is a ring groove extending along a vortex line;

20 is an exploded view of a double-locking body transmission operation device provided by some embodiments of the present disclosure, and the first overrunning groove is a ring groove extending along a vortex line;

21 is a structural diagram of a forced-sealing ball valve provided by some embodiments of the present disclosure, with the valve ball in a closed position;

22 is a structural diagram of a forced-sealed ball valve provided by some embodiments of the present disclosure, with the valve ball in an open position;

FIG. 23 is an exploded view of a valve ball, a valve disc, and a planetary roller screw device of a forced sealing ball valve provided by some embodiments of the present disclosure; FIG.

24 is a schematic view showing a state of a screw driving wheel, a valve disc and a cage of a forcedly sealed ball valve provided by some embodiments of the present disclosure, and the cage is in a reset state;

25 is a schematic view of a state of a spiral drive wheel, a valve disc and a cage of a forcedly sealed ball valve provided by some embodiments of the present disclosure, with a planetary roller and a cage rotating for a reset stroke;

FIG. 26 is a schematic view showing a state of a screw driving wheel and a cage using a forcedly sealed ball valve provided by some embodiments of the present disclosure. The positions of the planetary rollers and the cage are in a state where the forcedly sealed ball valve completes the forced sealing and closing.

detailed description

As shown in FIG. 1 to FIG. 6, a double-locking body transmission operating device includes a rotating body 10. The rotating body is a rotating body that reciprocates within a set stroke. The double-locking body transmission operating device is provided with a driving dial 20. And stroke positioning base 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, and the first through hole is provided in the A first locking body 13 is provided, and a second locking body 14 is provided in the second through hole; the stroke positioning seat is provided with a forward positioning recessed hole 31 and a reverse positioning recessed 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 overtaking groove, and the first locking body can also be disengaged from The first overtaking groove moves into the first through hole and the positive positioning recessed hole; the second locking body moves back and forth along the second through hole, and the second locking body can move to all positions. Between the second through hole and the reverse positioning recessed hole, the second locking body can also be moved into the second through hole and the second overtaking groove.

One end of the first overrunning slot is a forward driving end 23, one end of the second overrunning slot is a reverse driving end 24, and the position of the first through hole corresponds to the forward driving end of the first overrunning slot. The position of the second through hole corresponds to the reverse driving end of the second overrunning slot (as shown in FIG. 10, FIG. 11 or FIG. 13); the forward driving end toggles the first lock The rotating body rotates the rotating body in the forward direction (R1 direction), the reverse driving end turns the second locking body to rotate the rotating body in the reverse direction (R2 direction); The first locking body enters the forward positioning recessed hole, and the reverse driving end dials the second locking body into the reverse positioning recessed hole.

When the rotating body is rotated to the positive end of the set stroke (as shown in FIG. 11), the position of the first through hole 11 corresponds to the positive positioning recessed hole 31, and the rotating body is rotated to When the reverse end of the stroke is set (as shown in FIG. 13), the position of the second through hole 12 corresponds to the reverse positioning recessed hole 32.

As shown in FIG. 6, the first locking body is provided with a first positioning action surface 13 a in contact with the positive positioning recessed hole, the first positioning action surface is a curved surface or an inclined surface, and the first positioning action surface A force F1 perpendicular to the first through-hole axis and a force F2 along the first through-hole axis are generated when in contact with the positive positioning recessed hole; the first locking body is provided with A first overrunning surface 13b contacted by the end, the first overrunning surface is a curved surface or an inclined surface, and the first overrunning surface is in contact with the overrunning groove end to generate along the rotation direction of the driving turntable The acting force F3 and acting force F4 along the axis direction of the first through-hole; the same principle as shown in FIG. 6, the second locking body is provided with a second positioning action surface in contact with the reverse positioning concave hole, The second positioning action surface is a curved surface or an inclined plane. When the second positioning action surface is in contact with the reverse positioning recessed hole, a force acting in a vertical direction of the second through-hole axis and a force along the direction of the second through-hole axis are generated. Acting force; the second locking body is provided with an end connected to the overrunning groove A second overrunning surface in contact with the head, the second overrunning surface is a curved surface or an inclined surface, and the second overrunning surface is in contact with the overrunning groove end to produce an action along the rotation direction of the driving turntable A force and a force acting in an axial direction of the second through hole.

As shown in FIG. 4 and FIG. 15, the first overrunning groove and the second overrunning groove are annular grooves that are staggered from each other in a radial direction of the driving turntable.

As shown in FIG. 16, the first overrunning groove and the second overrunning groove are ring grooves with the same radius on the driving turntable.

The first overrunning groove and / or the second overrunning groove are annular grooves extending along a spiral line or a spiral line. As shown in FIGS. 19 and 20, the first overrunning groove is an annular groove extending along a vortex line.

As shown in FIG. 21 to FIG. 26, the double-locking body transmission operating device is provided on a compulsory sealing ball valve. The rotating body is a valve stem gear protective cover 10 fixedly connected to the valve ball 40. The set stroke of the rotating body is The rotation end 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 opened position of the valve ball, and the stroke positioning seat is a valve ball The upper bearing seat 30, the valve stem 41 drives the driving turntable 20 to rotate, the valve ball is provided with a valve disc 42, the valve disc is driven by the screw driving wheel 44 to extend and retract from the valve ball, and the screw driving wheel The valve flap is driven to move by a planetary roller screw device, and the planetary roller screw device is provided with a holder 43; the drive turntable drives the spiral drive wheel to rotate.

During the rotation stroke of the valve ball, the forward drive end rotates the valve ball to a closed position through the first locking body (as shown in the R1 direction shown in FIG. 10), and the drive dial, the valve The ball rotates synchronously. After the valve ball rotates to the closed position (as shown in the position shown in FIG. 11), the forward driving end of the first overrunning slot pushes the first locking body into the first through hole and forward positioning. In the recessed hole, the driving turntable rotates forward with respect to the valve ball, the second locking body moves in the second overrunning groove, and the driving turntable drives the spiral driving wheel to rotate (as shown in FIG. 12). Direction of R1), the valve disc extends toward the valve seat and engages with the valve seat; the driving turntable rotates in the opposite direction with respect to the valve ball (as shown in the R2 direction shown in FIG. 12), and the driving turntable drives The screw driving wheel rotates, the valve disc retracts toward the valve ball, and disengages from the valve seat. After the reverse driving end of the second overrunning groove touches the second locking body (see FIG. 11) Position shown), the reverse drive end dials the valve ball to the open position through the second locking body (The direction of R2 shown in FIG. 10), the driving turntable, the valve ball, the spiral driving wheel and the valve disc rotate synchronously, and the first locking body enters the first through hole and the first overrunning groove, so After the valve ball is rotated to the open position (as shown in FIG. 13), the reverse driving end pushes the second locking body into the second through hole and the reverse positioning concave hole, and the driving turntable is opposite As the valve ball rotates in the reverse direction, the first locking body moves in the first overrunning groove, the driving turntable drives the screw driving wheel to rotate (as shown in the R2 direction shown in FIG. 14), and the holding Shelf reset.

Embodiment one:

As shown in FIG. 1, FIG. 2, and FIG. 3, a double-locking body transmission operating device includes a rotating body 10, a driving turntable 20, and a stroke positioning base 30. The rotating body is a rotating body that reciprocates within a set stroke. The driving turntable is coaxial with the rotating body and is installed on the stroke positioning base. The rotating body is located between the driving turntable and the stroke positioning base.

The driving turntable is provided with a first overrunning groove 21 and a second overrunning groove 22. The first and second overrunning grooves are annular grooves coaxial with the driving turntable. The first and second overrunning grooves are in the radius direction of the driving turntable. In the ring grooves staggered from each other, 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 overrunning groove is a forward driving end 23, and one end of the second overrunning groove is a reverse driving end 24. The extending direction of the first overrunning slot from the forward driving end is opposite to the extending direction of the second overrunning slot from the reverse driving end. As shown in FIG. 4, the first overrunning slot extends clockwise from the forward driving end 23 and the second overrunning slot extends. The groove extends counterclockwise from the reverse drive end 24. In this embodiment, the cross sections of the first overrunning slot and the second overrunning slot are arc-shaped (as shown in FIG. 5), and the cross-sectional dimensions of the first overrunning slot and the second overrunning slot are the same.

The rotating body is a disc-shaped rotating body. The rotating body 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 of the same diameter, and the circumferential positions of the first through holes correspond to For the first overrunning groove of the driving turntable, the circumferential position of the second through hole corresponds to the second overrunning groove of the driving turntable. When the position of the first through hole corresponds to the forward driving end of the first overrunning slot, the position of the second through hole corresponds to the reverse driving end of the second overrunning slot (as shown in FIG. 10, FIG. 11 or FIG. 13). .

The travel positioning seat is provided with a forward positioning recessed hole 31 and a reverse positioning recessed hole 32. The forward positioning recessed hole and the reverse positioning recessed hole are spherical recesses of the same size. The circumferential position of the forward positioning recessed hole corresponds to the rotating body. The circumferential position of the first through hole and the reverse positioning concave hole corresponds to the 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 opposite end point of the set stroke, the position of the second through hole corresponds to Reverse the recessed holes.

A first locking body 13 is provided in a first through hole of the rotating body, and a second locking body 14 is provided in a second through hole of the rotating body. 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 be reciprocated along the first through hole, and the first locking body can be moved into the first through hole 11 and the first overtaking groove 21 (as shown by the first solid line in FIG. 6) Locking body), at this time, the first locking body is released from the positive positioning recess. The first locking body can also be disengaged from the first overrunning groove and moved into the first through hole and the positive positioning recessed hole (such as the first locking body shown by the dotted line in FIG. 6). Similarly, the second locking body can be reciprocated along the second through hole, the second locking body can be moved between the second through hole and the positive positioning concave hole, and the second locking body can also be moved to the second through hole. A hole and the second overrun slot.

The function of the locking body (including the first locking body and the second locking body) is to carry the driving end (including the forward driving end of the first overrunning groove and the reverse driving end of the second overrunning groove) and the positioning recess (including the forward direction) Positioning concave hole and reverse positioning concave hole), so that the driving end can push the rotating body to rotate in the forward and reverse directions through the locking body, and can also be pushed by the positioning recess and the driving end in the through hole (including the first Through hole and second through hole), changing positions between the positioning recess and the driving end. The forward driving end dials the first locking body to drive the rotating body to rotate forward (R1 direction), and the reverse driving end dials the second locking body to drive the rotating body to reverse rotation (R2 direction).

The length d of the first locking body is larger than the length K of the first through hole. The first locking body may protrude from the rotating body at the lower portion, and be retained in the first through hole and the first overtaking groove of the driving turntable. The first locking body may also be The upper part protrudes from the rotating body and is held in the positive positioning recessed hole of the first through hole and the stroke positioning seat. The second locking body in this embodiment is the same sphere as the first locking body. Similarly, the length of the second locking body is greater than the length of the second through hole, and the second locking body can be held in the second through hole and In the second overrunning groove, the second locking body may also be held in the second through hole and the reverse positioning concave hole.

Since the first locking body is a sphere, the forward positioning recess is a spherical recess corresponding to the first locking body, and the first locking body has a first positioning action surface 13a that is in contact with the forward positioning recess. The positioning surface is the arc of a sphere. When the first positioning action surface is in contact with the positive positioning recessed hole, an acting force F1 in a vertical direction of the first through-hole axis and an acting force F2 in a direction of the first through-hole axis are generated. The force F1 prevents the rotation of the rotating body and keeps the rotating body at the positive end point of the set stroke; the force F2 pushes the first locking body out of the positive positioning recess and enters the first overtaking groove.

The forward driving end of the first overrunning groove is an arc-shaped surface corresponding to the first locking body. The first locking body also has a first overrunning surface 13b which is in contact with the end of the overrunning groove (that is, the forward driving end of the first overrunning groove). The first overrunning surface is a curved surface of a sphere. When the end action surface is in contact with the end of the surpassing groove, an action force F3 in the rotation direction of the drive turntable and an action force F4 in the direction of the axis of the first through hole are generated. Among them, the acting force F3 pushes the rotating body to rotate in the forward direction (R1 direction), and the acting force F4 pushes the first locking body out of the first overrunning groove and enters the positive positioning concave hole.

Similar to the principle shown in FIG. 6, the second locking body is provided with a second positioning action surface in contact with the reverse positioning recess, the second positioning action surface is an arc surface of the sphere, and the second positioning action surface is opposite to the reverse positioning recess. When the holes come into contact, a force in the direction of rotation of the rotating body and a force in the direction of the axis of the second through hole are generated. The force in the rotation direction of the rotating body prevents the rotation of the rotating body and keeps the rotating body at the opposite end point of the set stroke; the force in the direction of the axis of the second through hole pushes the second locking body out of the reverse positioning concave hole and Enter the second overtaking slot. The second locking body is provided with a second overrunning surface which is in contact with the end of the overrunning groove (that is, the reverse driving end of the second overrunning groove). The second overrunning surface is a spherical surface of the sphere, and the second overrunning end functions. When the surface is in contact with the end of the overrunning groove, a force in the rotation direction of the driving turntable and a force in the direction of the axis of the second through hole are generated. The force in the rotation direction of the driving turntable pushes the rotating body to rotate in the reverse direction (R2 direction), and the force in the direction of the axis of the second through hole pushes the second locking body out of the second overrunning groove and into the reverse positioning concave hole.

As shown in FIG. 10, within a set travel range of the rotating body, the first locking body in the first through hole corresponds to the positive driving end of the first overrunning groove, and the second locking body in the second through hole Corresponds to the reverse drive end of the second overrunning slot.

When the driving turntable is rotated in the forward direction (as shown in the R1 direction of FIG. 10), the forward driving end 23 of the first overrunning groove dials the first locking body 13 and pushes the rotating body to rotate forward through the first locking body. As shown in FIG. 11, when the rotating body rotates to the positive end of the set stroke, the positions of the first through hole 11 and the first locking body 13 correspond to the positive positioning recessed holes 31 of the stroke positioning base, and at this time, the second overtaking The reverse driving end 24 of the groove also corresponds to the second through hole 12 and the second locking body 14 of the rotating body. The rotating body stops rotating due to the limitation of the set stroke. When the driving turntable continues to rotate in the forward direction (R1 direction), the forward driving end of the first overrunning slot will push the first locking body to move upward, and the upper surface of the driving turntable and the first The locking body contacts, and the first locking body is held in the first through hole and the forward positioning recess of the stroke positioning base, so that the rotation body and the stroke positioning base are locked, and the rotating body is maintained at the forward end position of the set stroke. . The driving turntable continues to rotate in the forward direction, and can rotate for a forward overrun stroke. During this process, the second locking body moves in the second overrun groove (as shown in FIG. 12). The maximum rotation angle of the forward overrun stroke is not greater than that of the second overrun groove. Arc angle α2.

The drive turntable can rotate in the reverse direction (R2 direction) after completing the forward overtravel stroke. When the forward drive end of the first overshoot groove is turned back to the first through-hole position corresponding to the rotating body (that is, corresponding to the first lock) Body), the reverse driving end of the second overrunning groove is also rotated to the position of the second through hole corresponding to the rotating body (that is, corresponding to the second locking body), as shown in FIG. 11. The driving turntable continues to rotate in the reverse direction, and the reverse driving end of the second overrunning groove dials the second locking body and pushes the rotating body to rotate in the reverse direction through the second locking body. The rotating body rotating in the opposite direction will push the first locking body out of the positive positioning recess 31 of the stroke positioning base. The first locking body enters the positive driving end of the first overrunning groove and rotates with the driving turntable, as shown in the direction R2 of FIG. 10. .

As shown in FIG. 13, when the rotating body is rotated 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 recessed holes 32, and the rotating body stops due to the limitation of the set stroke. Rotate, when the drive turntable continues to rotate in the reverse direction (R2 direction), the reverse drive end of the second overrunning slot will push the second lock body to move upward, the upper surface of the drive turntable contacts the second lock body, and the second lock body remains In the second through hole and the reverse positioning concave hole of the stroke positioning base, the rotation body and the stroke positioning base are locked, and the rotating body is maintained at the opposite end position of the set stroke. The driving turntable continues to rotate in the reverse direction, and a reverse overrun stroke can be rotated. During this process, the first locking body moves in the first overrun groove (as shown in FIG. 14). Arc angle α1.

After completing the reverse overtravel stroke, the drive turntable can rotate in the forward direction (R1 direction), and so on, and the first locking body can drive the rotary body to rotate forward again, and then enter the forward overtravel stroke.

In this embodiment, the forward driving end 23 and the reverse driving end 24 of the driving turntable are at the same radial position (as shown in FIG. 4). In fact, the forward drive end and the reverse drive end of the drive turntable can also be at different radial positions, as long as the forward drive end corresponds to the first through hole of the rotating body, and the reverse drive end corresponds to the first through hole of the rotating body. Just two through holes.

The first overrunning groove and the second overrunning groove in this embodiment are ring grooves that are staggered from each other in the radial direction of the drive turntable. In the forward overrunning stroke, the second locking body moves in the second overrunning groove, and the arc shape of the second overrunning groove. The angle α2 limits the travel angle of the positive overrunning stroke; in the reverse overrunning stroke, the first locking body moves in the first overrunning groove, and the arc angle α1 of the first overrunning groove limits the travel angle of the reverse overrunning stroke. As shown in FIG. 15, in order to prevent the first locking body from falling into the other end 23a of the first overrunning groove in the forward overtravel stroke, and to prevent the second locking body from falling into the other end 24a of the second overrunning groove during the reverse overtravel stroke, The sum of the arc angle α1 of the overrunning groove and the arc angle α2 of the second ring groove is less than 360 °.

The “forward” and “reverse” described in this embodiment are relative concepts, and the opposite definitions can be made as needed.

This embodiment adopts a bidirectional locking body and overrunning groove structure, so that the drive turntable can complete a set of overrunning strokes outside the two rotating stroke ends of the rotating body while completing the set stroke driving of the rotating body, which can meet some requirements. The requirement of mechanical movement simplifies the operation process and is convenient to use.

Embodiment two:

As shown in FIG. 16, a double-locking body transmission operating device includes a rotating body 10, a driving turntable 20, and a stroke positioning base 30. This embodiment is a structural replacement of the first embodiment.

In this embodiment, the first overrunning groove 21 and the second overrunning groove 22 are ring grooves with the same radius on the driving turntable. In order to prevent the first locking body from falling into the second overrunning groove during the forward overrunning stroke, and to prevent the second locking body from falling into the first overrunning slot during the reverse overrunning stroke; the forward driving ends 23 to of the first overrunning slot The angle α3 between the opposite driving ends 24 of the two overrunning grooves is larger than the arc angle α1 of the first overrunning groove and also larger than the arc angle α2 of the second overrunning groove. In the forward overrunning stroke, when the first locking body comes out After the driving end is forwarded, the maximum rotation angle of the driving turntable relative to the rotating body is not greater than the arc angle α2 of the second overrunning groove, so the first locking body does not fall into the second overrunning groove. Similarly, the movement of the second locking body is the same when the stroke is reversed.

In this embodiment, the diameter of the driving turntable can be reduced to meet the structural requirements of some mechanical devices.

Embodiment three:

As shown in FIG. 5, a double-locking body transmission operating device, this embodiment is a structural replacement of the first embodiment.

In addition to the first locking body using the sphere in the first embodiment, other structures of the first locking body may also be used.

As shown in FIG. 7, the first locking body 13 uses pins with spherical ends. The second locking body also uses pins with spherical ends at the same ends as the first locking body.

As shown in FIG. 8, the first locking body 13 uses pins with conical ends. The forward positioning recessed hole 31 of the stroke positioning seat is a conical recessed hole corresponding to the first locking body. The first overrunning groove 21 is a cross section and The tapered ring groove 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 a pin with a conical shape at both ends similar to the first locking body.

As shown in FIG. 9, the first locking body 13 adopts a horizontally disposed pin (the axis of the pin is perpendicular to the axis of the rotating body), and the stroke positioning seat is provided with a positive positioning concave hole 31 which is a cylindrical recess corresponding to the first locking body. The hole, 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 uses the same laterally disposed pins as the first locking body.

Embodiment 4:

As shown in FIGS. 17 and 18, a double-locking body transmission operating device includes a rotating body 10, a driving turntable 20, and a stroke positioning base 30. This embodiment is a structural replacement of the first embodiment.

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

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

In this implementation, the overrunning slot (including the first overrunning slot and the second overrunning slot) is changed from a flat setting to a cylindrical setting, which can achieve the same effect as the device described in the first embodiment.

In addition, the shaft hole 33 of the stroke positioning base is provided with a radial step hole 34, and the limit stop 15 touches both ends of the step hole 34 during the rotation to control the rotation of the rotating body within the set stroke.

Embodiment 5:

As shown in Fig. 19 and Fig. 20, a double-locking body transmission operating device, this embodiment is a structural replacement of the first embodiment.

In this embodiment, the first overrunning groove 21 of the driving turntable is an annular groove extending along a vortex 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 an elongated hole extending in the radial direction.

The structure of this embodiment enables the first locking body to move a longer distance along the first overrunning groove, and increases the reverse overtravel stroke of the driving turntable.

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

Further, referring to the principle of this embodiment, the fourth embodiment can be structurally replaced, and the first overrunning groove and the second overrunning groove can be made into a ring groove extending along a spiral line. The same effect can be achieved by making the first through hole and the second through hole of the rotating body into elongated holes extending in the axial direction.

Embodiment 6:

As shown in FIG. 21 to FIG. 26, a forced seal ball valve includes a valve ball 40 and a valve stem 41. The valve ball is provided with a valve flap 42 and a spiral drive wheel 44. The valve stem drives the valve ball to rotate, and the valve stem also drives the screw drive wheel to rotate relative to the valve ball. When the screw drive wheel rotates relative to the valve ball, the valve disc is pushed up and retracted, and the valve valve is forced when the valve seat 45 is pressed against the valve seat. seal.

The working method of the forced seal ball valve is: during the closing operation, the valve stem and the valve disc rotate together. When the valve ball rotates to the closed position, the valve ball stops rotating, and the screw driving wheel rotates forward relative to the valve ball, pushing The valve disc extends from the valve ball and presses against the valve seat to achieve a forced seal. During the opening process of the ball valve, the screw driving wheel rotates in the opposite direction relative to the valve ball, driving the valve disc away from the valve seat, and then the valve ball and the valve disc rotate at the same time, and the valve ball rotates to the open position.

In order to reduce the operating torque of the valve stem during the operation of the forced seal ball valve, the screw drive wheel drives the valve disc through a planetary roller screw device. Ordinary planetary roller screw devices require a track change groove. For a forced-seal ball valve, the valve disc only moves in a small stroke interval, and its rotation angle when driving the thread is very small. The track change groove is no longer necessary. structure. However, according to applications and experiments, the shortcomings of such a planetary roller spiral device are that during the reciprocating rotation of the planetary roller spiral device, due to factors such as manufacturing accuracy and working environment, the planetary rollers cannot be guaranteed to communicate with the outside during the movement of the planetary rollers. The precise positional relationship between the thread and the internal thread will cause some angular errors, that is, each time the ball body rotates to the open position, the planetary roller cannot guarantee to reset to the same position, and it accumulates after repeated reciprocating rotations The angular error causes the planetary roller and the cage to have an axial offset. When this axial offset accumulates to a certain degree, it will cause the cage to press the external threaded component or the internally threaded component, hindering the external threaded component or the internally threaded component. Normal rotation can even invalidate the operation of the ball valve.

In order to solve this technical problem, the forced-sealing ball valve of this embodiment uses a cage reset planetary roller screw device. The spiral drive wheel is provided with external threads, and the valve disc is provided with internal threads. A plurality of planetary rollers 46 are provided between the external and internal threads, and the planetary rollers are disposed between the external and internal threads through a cage 43. It is assumed that both ends of the holder are a first end face and a second end face, and the first and second end faces of the holder are spiral end faces. The spiral end surfaces of the first end surface and the second end surface are spiral surfaces corresponding to a spiral line of the external or internal thread. The spiral surface of the first end surface forms a first convex edge 47 at a position of one rotation, and the spiral surface of the second end surface forms a second convex edge 48 at a position of one rotation. The first convex edge and the second convex edge face opposite in the circumferential direction of the holder. The screw driving wheel is provided with a first bumper 49, and the first bumper is a pin protruding from the end surface of the externally threaded component. The valve disc is provided with a second bumper 50, and the second bumper is also a pin protruding from the end surface of the internally threaded component. The first bumper touches the first convex edge in the circumferential direction of the holder, and the second bumper touches the second convex edge in the circumferential direction of the holder. Because the planetary roller screw device rotates without load during the opening process, the planetary rollers will use the gap between the external and internal threads to slide while rolling, and the cage and the planetary rollers will return to the starting position. In this way, each time the forced sealing ball valve completes the opening operation, the first bump of the screw drive wheel or the second bump of the valve disc will reset the cage.

In the original design, during the opening process of the compulsory sealing ball valve, the screw drive wheel first reversely rotated relative to the valve ball, driving the valve disc away from the valve seat, and recovering the valve disc to the position in contact with the valve ball, and then the valve ball and the valve disc Rotate together, the valve ball rotates to the open position. The problem with this design is that the valve disc is retracted to the position in contact with the valve ball in the closed position of the valve ball. At this time, the valve disc is still under the pressure of the pipeline, and the planetary roller and the external and internal threads There is pressure between the planetary rollers and the external and internal threads. There is no gap sliding. When the first bumper and the second bumper reset the cage, a huge force is required to reset the cage. Enlarge or damage the planetary roller screw device, cage and bumper.

In the technical solution of this embodiment, during the closing process of the ball valve, the valve disc is pushed out a short distance, and then the valve ball and the valve disc rotate together. When the valve ball rotates to the closed position, the valve ball stops rotating. The screw driving wheel rotates in a positive direction relative to the valve ball, and the valve flap is pushed out and pressed against the valve seat to realize the sealing and closing of the forced sealing ball valve. During the opening of the ball valve, the screw drive wheel rotates in the opposite direction with respect to the valve ball. First, the valve disc is released from the valve seat. When the valve disc is released from the valve seat, the valve ball and the valve disc rotate at the same time. After the valve ball rotates to the open position, The screw driving wheel rotates in the opposite direction with respect to the valve ball again, so that the valve disc is recovered to a position in contact with the valve ball body, and the valve disc is reset. The axial displacement of the cage accumulated during the valve closing and valve opening process results in a one-way contact between the cage and the first or second bumper, thereby locking the unidirectional lock with the helical drive wheel or valve flap. In the open position, the pressure difference between the inside and outside of the valve disc is no longer supported, and the cage can be reset using a smaller driving force.

This requires that the operating device of the forced sealing ball valve can realize two-stage driving operation of the valve disc: one stage is to operate the valve disc to reciprocate in the direction of the valve seat in the closed position of the valve ball, which is engaged with the valve seat during the closing operation and during the opening operation. Disengaged from the valve seat. The other part is to operate the valve disc in the open position of the valve ball to telescopically move the valve ball. During the closing operation, the valve disc is extended out of the valve ball a certain distance, so that the planetary roller and the cage have a reset stroke. The resetting stroke retracts the valve flap to a position in contact with the valve ball, and resets the cage in a non-loaded state.

The forced-sealing ball valve in this embodiment uses the double-locking body transmission operating device described in the first embodiment. The rotating body described in the double-locking body transmission operating device is a valve rod gear protection cover 10 provided on the upper part of the valve ball and fixedly connected to the valve ball. The stroke positioning seat described in the double-locking body transmission operating device is provided in the valve body. The upper upper bearing seat 30 and the forced seal ball valve are further provided with a lower bearing seat 51 which can control the valve ball to rotate within a set stroke. The valve stem 41 drives the driving turntable 20 to rotate. The driving turntable is a gear plate, and the spiral driving wheel 44 is also a gear. The driving turntable drives the spiral driving wheel to rotate through the intermediate gear 52.

According to the double-locking body transmission operating device of the first embodiment, the rotation direction of the valve stem in the closing operation corresponds to the forward rotation direction R1 of the drive turntable, and the rotation direction of the valve stem in the opening operation corresponds to the reverse rotation direction of the drive turntable. Turn direction R2.

The state of the forced seal ball valve in the open position is shown in Fig. 22, and the state of the screw drive wheel, the valve disc and the cage is shown in Fig. 24. The valve flap retracts into contact with the valve ball, and the holder is controlled in the reset position by the first bumper 49 of the screw drive wheel or the second bumper 50 of the valve disc. The upper part of the second locking body protrudes from the rotating body and is held in the second positioning hole and the 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 driving dial is In the reverse overrun stroke, the first locking body is in the first overrun groove (as shown in FIG. 14).

In the closing operation of the forced sealing ball valve, the valve rod is turned in the closing direction (R1 direction), and the valve rod drives the drive turntable to rotate in the positive direction (R1 direction) during the reverse overrun stroke. Relative to the positive rotation of the valve ball, the valve disc is separated from the valve ball, that is, it protrudes from the valve ball for a distance, but the extended valve disc does not affect the rotation of the valve ball. The planetary roller and the cage will generate a reset stroke, and the angle of the reset stroke is not less than the rotation angle error generated by the planetary roller and the cage.

When the forward drive end of the first overrunning groove is rotated to the position of the first through hole corresponding to the stem gear protective cover (rotating body) (that is, corresponding to the first locking body), as shown in FIG. 13, the driving turntable continues Forward rotation, the positive driving end of the first overrunning groove dials the first locking body, and the valve body gear cover is rotated forward by the first locking body, so that the valve ball rotates in the closing direction. Under the push, the second locking body is released from the reverse positioning recess of the upper bearing seat, and the lock between the valve ball and the upper bearing seat is released until it enters the reverse driving end of the second overrunning groove.

The valve rod continues to rotate in the closing direction (R1 direction), the valve rod drives the drive turntable to rotate in the forward direction (as shown in the R1 direction of FIG. 10), and the positive driving end of the first overrunning groove dials the first locking body and passes the first When the body pushes the valve rod gear protection cover 10 (rotating body) to rotate in the forward direction, the valve ball is turned in the closing direction, and the valve ball is turned to the closed position (the positive end of the set stroke, as shown in the position shown in FIG. 11). The ball stops rotating due to the limitation of the set stroke. When the driving turntable continues to rotate in the forward direction (R1 direction), the forward driving end of the first overrunning groove will push the first locking body to move upward, and the upper part of the first locking body will protrude. The rotating body is held in the first through hole and the positive positioning recess 31 of the upper bearing seat 30 (stroke positioning seat), so that the valve ball and the upper bearing seat are locked, and the valve ball is maintained in the closed position. The drive turntable continues to rotate in the forward direction, and a positive overshoot stroke can be turned, as shown in Figure 12. In this process, the drive turntable drives the spiral drive wheel to rotate forward with respect to the valve ball, and the valve disc is ejected and pressed against the valve. The seat is engaged with the valve seat to realize the sealing and closing of the forced sealing ball valve. The state of the forced sealing ball valve is shown in FIG. 21, and the states of the screw driving wheel, the valve disc and the cage are shown in FIG. 26.

In the opening operation of the forced sealing ball valve, the valve rod is turned in the opening direction (R2 direction), and the valve rod drives the drive turntable to rotate in the reverse (R2 direction) during the forward overshoot stroke. In the process, the drive turntable drives the spiral The driving wheel rotates in reverse with respect to the valve ball, the screw driving wheel drives the valve disc away from the valve seat (disengagement from the valve seat), and the planetary roller and the cage also rotate with it, because the valve disc does not rotate to the reset state ( (That is, in contact with the valve ball), the cage is outside the resetting stroke, and the cage will not contact the first bumper 49 of the screw drive wheel or the second bumper 50 of the valve disc, thereby avoiding the planetary roller and the When there is pressure between the external thread and the internal thread, the cage is pushed. The state of the screw drive wheel, the valve disc, and the cage is shown in FIG. 25.

When the forward driving end of the first overrunning groove is turned back to the position of the first through hole corresponding to the valve rod gear cover (rotating body) (that is, corresponding to the first locking body), the second overrunning groove is reversely driven The end is also rotated to the second through hole position corresponding to the valve rod gear protective cover (rotating body) (that is, corresponding to the second locking body), as shown in FIG. 11. The driving turntable continues to rotate in the reverse direction. The reverse driving end of the second overrunning groove dials the second locking body, and pushes the stem gear protective cover to rotate in the reverse direction through the second locking body (as shown in the direction of R2 in FIG. 10). Pushed by the protective cover of the valve rod gear, the first locking body is released from the positive positioning recess of the upper bearing seat, and the lock between the valve ball and the upper bearing seat is released, so that the valve ball rotates in the opening direction.

As shown in Figure 13, when the valve ball is turned to the open position (the opposite end of the set stroke), the position of the second through hole and the second locking body corresponds to the reverse positioning recessed hole of the upper bearing seat (stroke positioning seat) 32. The valve ball stops rotating due to the limitation of the set stroke. When the driving turntable continues to rotate in the reverse direction (R2 direction), the reverse driving end of the second overrunning groove will push the second locking body to move upward and the upper part of the second locking body will protrude. The rotating body is held in the reverse positioning recess hole of the second through hole and the upper bearing seat, so that the valve ball and the upper bearing seat are locked, and the valve ball is maintained in the open position (that is, the reverse end position of the set stroke) ). The drive turntable continues to rotate in the reverse direction, and rotates for a reverse overrun stroke. During this process, the drive turntable again drives the spiral drive wheel to rotate in the reverse direction relative to the valve ball during the reset stroke, and completes the cage reset stroke in a non-loaded state. . The spiral drive wheel drives the valve flap to retract to the position in contact with the valve ball, and the planetary roller and the cage also rotate in the reverse direction during the reset stroke. If the rotation angle of the planetary roller and the cage is incorrect, the The first bumper 49 or the second bumper 50 of the valve flap will reset the cage. The state of the forcibly sealed ball valve is shown in FIG. 22, and the state of the screw drive wheel, the valve disc and the cage is shown in FIG. 24.

In this embodiment, a double-locking body transmission operating device is applied to a force-sealed ball valve. The screw drive wheel is first driven to disengage the valve disc from the valve seat. After the valve ball is turned to the open position, the screw drive wheel is driven again to complete the valve disc and hold. The resetting of the frame enables the forced sealing ball valve to smoothly complete the resetting operation of the cage during the opening process.

Embodiment 7:

A forced seal ball valve. This embodiment is a structural replacement of the fifth embodiment.

As shown in FIG. 17 and FIG. 18, the forcibly sealed ball valve in this embodiment adopts the double-locking body transmission operating device described in the fourth embodiment.

Claims (10)

1. A double-locking body transmission operating device includes a rotating body, wherein the rotating body is a rotating body that reciprocates within a set stroke, and 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, and the first through hole is provided with a first locking body and the second through hole A second locking body is provided therein; the stroke positioning seat is provided with a forward positioning concave hole and a reverse positioning concave hole.
2. The dual-lock body transmission operating device according to claim 1, wherein the first lock body is reciprocated along the first through hole, and the first lock body is movable to the first through hole and the first through hole. In the first overrunning slot, the first locking body can also be separated from the first overrunning slot and moved into the first through hole and the forward positioning recessed hole; the second locking body is along the first Two through holes move back and forth, the second locking body can move between the second through hole and the reverse positioning concave hole, and the second locking body can also move to the second through hole and the The second transcendence slot is described.
3. The double-locking body transmission operating device according to 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 the When the position corresponds to the forward driving end of the first overrunning slot, the position of the second through hole corresponds to the reverse driving end of the second overrunning slot; the forward driving end toggles the first The locking body drives the rotating body to rotate in a forward direction, the reverse driving end dials the second locking body to drive the rotating body in a reverse rotation; the forward driving end dials the first locking body into the In the forward positioning recessed hole, the reverse driving end dials the second locking body into the reverse positioning recessed hole.
4. The double-locking body transmission operating device according to claim 2, wherein when the rotating body rotates to the forward end of the set stroke, the position of the first through hole corresponds to the forward positioning recessed hole When the rotating body is rotated to the reverse end of the set stroke, the position of the second through hole corresponds to the reverse positioning concave hole.
5. The dual-locking body transmission operating device according to claim 1, wherein the first locking body is provided with a first positioning action surface that is in contact with the positive positioning recess, and the first positioning action surface is a curved surface or An inclined surface, when the first positioning action surface is in contact with the positive positioning recessed hole, a force acting in a direction perpendicular to the axis of the first through hole and a force acting in the direction of the axis of the first through hole; There is a first overrunning surface which is in contact with the end of the overrunning groove. The first overrunning surface is a curved surface or an inclined surface. The force in the rotation direction of the drive turntable and the force in the direction of the axis of the first through hole; the second locking body is provided with a second positioning action surface in contact with the reverse positioning recess, and the second positioning The action surface is a curved surface or an inclined plane, and the second positioning action surface generates a force acting in a direction perpendicular to the axis of the second through hole and a force acting in the direction of the axis of the second through hole when the second positioning action surface contacts the reverse positioning concave hole; The second locking body is provided with the super A second overrunning surface in contact with the end of the groove, the second overrunning surface being a curved surface or an inclined surface, and the second overrunning surface in contact with the overrunning groove end generates rotation along the driving turntable The force in the direction and the force in the direction of the axis of the second through hole.
6. The double-locking body transmission operating device according to claim 1, wherein the first overrunning groove and the second overrunning groove are annular grooves that are staggered from each other in a radial direction of the drive turntable.
7. The double-locking body transmission operating device according to claim 1, wherein the first overrunning groove and the second overrunning groove are ring grooves of the same radius on the driving turntable.
8. The double-locking body transmission operating device according to claim 1, wherein the first overrunning groove and / or the second overrunning groove is a ring groove extending along a spiral line or a spiral line.
9. The double-locking-body transmission operating device according to claim 1, wherein the double-locking-body transmission operating device is provided on a compulsory sealing ball valve, and the rotating body is a valve stem gear protective cover fixedly connected to the valve ball, and The set stroke of the rotating body is the rotation stroke of the valve ball, the forward end of the rotation stroke corresponds to the closed position of the valve ball, and the reverse end of the rotation stroke corresponds to the opened position of the valve ball. The travel positioning seat is a bearing seat on a valve ball, and a valve rod drives the driving turntable to rotate. The valve ball is provided with a valve disc. The valve disc is extended and retracted from the valve ball by a spiral drive wheel. The driving wheel drives the valve flap to move through a planetary roller screw device, and the planetary roller screw device is provided with a holder; the driving turntable drives the spiral driving wheel to rotate.
10. The double-locking body transmission operating device according to claim 9, wherein, during a rotation stroke of the valve ball, the forward driving end turns the valve ball to a closed position through the first locking body, After the valve ball is rotated to the closed position, the positive driving end of the first overrunning groove pushes the first locking body into the first through hole and the positive positioning recessed hole, and the driving turntable is opposite to the The valve ball rotates in a forward direction, the second locking body moves in the second overrunning groove, the driving turntable drives the screw driving wheel to rotate, and the valve disc extends toward the valve seat and engages the valve seat; The drive turntable rotates in the opposite direction with respect to the valve ball, the drive turntable drives the spiral drive wheel to rotate, the valve disc retracts toward the valve ball direction, and disengages from the engagement with the valve seat. After the reverse drive end touches the second lock body, the reverse drive end rotates the valve ball to the open position through the second lock body, and the first lock body enters the first In the through hole and the first overrunning groove, the valve ball rotates After the open position, the reverse drive end pushes the second locking body into the second through hole and the reverse positioning recess, the drive turntable rotates in reverse with respect to the valve ball, and the first The locking body moves in the first overrunning groove, the driving turntable drives the screw driving wheel to rotate, and the holder is reset.

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