CN221348100U

CN221348100U - Locking structure of electric actuator of multi-rotary valve

Info

Publication number: CN221348100U
Application number: CN202323517833.9U
Authority: CN
Inventors: 刘鹏珍; 徐青
Original assignee: Shengang Automatic Control Valve Technology Jiangsu Co ltd
Current assignee: Shengang Automatic Control Valve Technology Jiangsu Co ltd
Priority date: 2023-12-22
Filing date: 2023-12-22
Publication date: 2024-07-16
Anticipated expiration: 2033-12-22

Abstract

The utility model belongs to the technical field of locking of electric actuators, in particular to a locking structure of a multi-rotary valve electric actuator, which comprises a box body, wherein the other end of a transmission rod is rotationally connected with the inner wall of the box body through a bearing, two groups of rotation rods are rotationally arranged on a supporting frame through pins, clamping plates are welded on the rotation rods, a positioning ring is fixedly sleeved on the transmission rod, clamping grooves are formed in the positioning ring, a lug is fixedly arranged on the inner wall of the clamping plates, the two groups of clamping plates are driven to rotate through the two groups of rotation rods, so that the two groups of clamping plates clamp and lock the transmission rod through clamping force, the lug on the clamping plates is buckled with the clamping grooves on the positioning ring when the clamping plates clamp the transmission rod, the lug and the clamping grooves are buckled, so that the transmission rod cannot rotate when the clamping plates are loosened easily, and the locking effect is improved by increasing the resistance of the lug and the clamping grooves and matching the clamping force of the clamping plates.

Description

Locking structure of electric actuator of multi-rotary valve

Technical Field

The utility model relates to the technical field of locking of electric actuators, in particular to a locking structure of an electric actuator of a multi-rotary valve.

Background

The multi-rotation valve is switched on and off by lifting or lowering the valve rod, the existing multi-rotation valve electric actuator usually utilizes the rotation of the screw rod structure to enable the screw rod structure to generate displacement to control the on and off of the valve, and after the on and off of the valve is completed, the valve needs to be fixed at the position by using a locking structure to prevent the position from changing.

One chinese patent with publication number CN110864153B discloses a locking structure of a multi-turn valve electric actuator, which comprises a connecting rod, and includes a spline section, a locking unit, a manual gear, a clutch unit, wherein when the manual gear and the torque gear are engaged with the clutch gear, the locking unit does not hold the connecting rod tightly, and when the clutch gear is disengaged from the manual gear and the torque gear, the locking unit holds the connecting rod tightly.

The existing locking structure prevents the valve position from changing by fixing the transmission rod of the multi-rotation valve, but the locking structure has the problem of easy loosening, so that the locking effect is poor and the opening and closing stability of the valve is affected; therefore, a locking structure of the multi-rotary valve electric actuator is provided for solving the problems.

Disclosure of utility model

In order to make up the deficiency of the prior art and solve the problems existing in the prior art, the utility model provides a locking structure of an electric actuator of a multi-rotation valve.

The technical scheme adopted for solving the technical problems is as follows: the utility model discloses a locking structure of an electric actuator of a multi-rotary valve, which comprises a box body, wherein a driving motor is arranged in the box body, a transmission rod is arranged on an output shaft of the driving motor, the other end of the transmission rod is rotatably connected with the inner wall of the box body through a bearing, a locking component is arranged on the transmission rod and comprises a supporting frame, two groups of rotating rods are rotatably arranged on the supporting frame through pins, clamping plates are welded on the rotating rods, the clamping plates are of arc structures, a positioning ring is fixedly sleeved on the transmission rod, clamping grooves are formed in the positioning ring, protruding blocks are fixedly arranged on the inner wall of the clamping plates, the protruding blocks are mutually buckled with the clamping grooves, sliding grooves are formed in a bottom plate of the box body, two groups of sliding blocks are symmetrically arranged in the sliding grooves, connecting plates are welded on the sliding blocks, a mounting plate is welded on the mounting plate, a guide frame is rotatably arranged on the mounting plate through pins, the rotating rods are placed in the guide frame, the two groups of rotating rods drive the two groups of clamping plates to rotate, the two groups of clamping plates clamp the transmission rod, clamping plates are clamped by the clamping plates, the clamping plates are enabled to have clamping effect of clamping the clamping plates to be easily buckled with the clamping plates through clamping grooves, and the clamping plates can not easily buckled with the clamping plates when the clamping plates are buckled with the clamping plates, and the clamping grooves are enabled to be matched with the clamping plates, and the clamping grooves can not easily be buckled with the clamping plates.

Preferably, the lead screw is installed through the bearing rotation between the spout inner wall, screw thread symmetry on the lead screw is opposite, two sets of sliders cover are established at the lead screw periphery, set up the screw thread on the slider and slide through screw thread and lead screw cooperation, set up the standing groove on the box bottom plate, install step motor in the standing groove, step motor's output shaft and lead screw one end fixed connection, through step motor operation, drive the lead screw and rotate, the lead screw drives two sets of sliders synchronous relative movement on it, two sets of sliders drive two sets of connecting plates synchronous relative movement on it, two sets of connecting plates drive two sets of mounting panels synchronous relative movement, two sets of mounting panels drive two sets of leading truck synchronous relative movement, two sets of leading truck traction two sets of dwang rotate around the pin on it, two sets of dwang drive two sets of splint rotate, realized splint carry out centre gripping locking to the transfer line, be favorable to improving locking efficiency.

Preferably, the valve rod penetrates through the bottom plate of the box body, the worm wheel is fixedly sleeved on the valve rod, the middle section of the transmission rod is a worm, the worm is meshed with the worm wheel, the motor is operated, the transmission rod is driven to rotate, the transmission rod drives the worm to rotate, the worm is driven to push the worm wheel to rotate, the worm wheel drives the valve rod to rotate, and accordingly opening and closing of the valve are achieved, and opening and closing efficiency of the valve are improved.

The utility model has the advantages that:

1. According to the clamping device, the two groups of clamping plates are driven to rotate by the two groups of rotating rods, so that the two groups of clamping plates clamp and lock the transmission rods by clamping force, when the clamping plates clamp the transmission rods, the convex blocks on the clamping plates are buckled with the clamping grooves on the positioning rings, the convex blocks cannot rotate by buckling with the clamping grooves, the transmission rods are prevented from rotating when the clamping plates are easy to loosen, and the clamping force of the clamping plates is matched by increasing the resistance of the convex blocks and the clamping grooves, so that the locking effect is improved.

2. According to the utility model, the screw rod is driven to rotate through the operation of the stepping motor, the screw rod drives the two groups of sliding blocks on the screw rod to synchronously and relatively move, the two groups of sliding blocks drive the two groups of connecting plates on the screw rod to synchronously and relatively move, the two groups of connecting plates drive the two groups of mounting plates to synchronously and relatively move, the two groups of mounting plates drive the two groups of guide frames to synchronously and relatively move, the two groups of guide frames pull the two groups of rotating rods to rotate in an arc shape around pins on the guide frames, the two groups of rotating rods drive the two groups of clamping plates to rotate, so that clamping and locking of the clamping plates on the transmission rods are realized, the locking efficiency is convenient to improve, the motor is operated to drive the transmission rods to rotate, the transmission rods drive the worm to rotate, and the worm drives the worm wheel to rotate, so that the valve rod is driven to rotate, and the opening and closing efficiency of the valve is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic perspective view of a first view;

FIG. 2 is a schematic view of a three-dimensional structure of a clamping plate;

FIG. 3 is a schematic perspective view of a locking assembly;

Fig. 4 is a schematic perspective view of a valve stem.

In the figure: 1. a case; 2. a driving motor; 3. a transmission rod; 4. a support frame; 5. a rotating lever; 6. a clamping plate; 7. a positioning ring; 8. a clamping groove; 9. a bump; 10. a chute; 11. a slide block; 12. a connecting plate; 13. a mounting plate; 14. a guide frame; 15. a screw rod; 16. a placement groove; 17. a stepping motor; 18. a valve stem; 19. a worm wheel; 20. a worm.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, a locking structure of an electric actuator of a multi-rotary valve comprises a box body 1, a driving motor 2 is arranged in the box body 1, a transmission rod 3 is arranged on an output shaft of the driving motor 2, the other end of the transmission rod 3 is rotationally connected with the inner wall of the box body 1 through a bearing, a locking component is arranged on the transmission rod 3, the locking component comprises a supporting frame 4, two groups of rotating rods 5 are rotationally arranged on the supporting frame 4 through pins, clamping plates 6 are welded on the rotating rods 5, the clamping plates 6 are of arc structures, a positioning ring 7 is fixedly sleeved on the transmission rod 3, a clamping groove 8 is arranged on the positioning ring 7, a bump 9 is fixedly arranged on the inner wall of the clamping plates 6, the bump 9 and the clamping groove 8 are mutually buckled, the bottom plate of the box body 1 is provided with a chute 10, two groups of sliding blocks 11 are symmetrically assembled in the chute 10, a connecting plate 12 is welded on the sliding blocks 11, a mounting plate 13 is welded on the connecting plate 12, a guide frame 14 is rotatably installed on the mounting plate 13 through a pin, a rotating rod 5 is placed in the guide frame 14, a screw rod 15 is rotatably installed between the inner walls of the chute 10 through a bearing, the threads on the screw rod 15 are symmetrically opposite, the two groups of sliding blocks 11 are sleeved on the periphery of the screw rod 15, the sliding blocks 11 are provided with threads and slide in cooperation with the screw rod 15 through the threads, the bottom plate of the box body 1 is provided with a placing groove 16, a stepping motor 17 is installed in the placing groove 16, An output shaft of the stepping motor 17 is fixedly connected with one end of a screw rod 15, a valve rod 18 penetrates through the bottom plate of the box body 1, a worm wheel 19 is fixedly sleeved on the valve rod 18, a worm 20 is arranged at the middle section of the transmission rod 3, and the worm 20 is meshed with the worm wheel 19; When the locking structure works, the existing locking structure is used for preventing the valve position from changing by fixing the transmission rod 3 of the multi-rotation valve, but the locking structure has the problem of easy loosening, so that the locking effect is poor, the opening and closing stability of the valve is affected, the transmission rod 3 is driven to rotate by operating the movable motor 2, the transmission rod 3 drives the worm 20 to rotate, the worm 20 pushes the worm wheel 19 to rotate, and the worm wheel 19 drives the valve rod 18 to rotate, so that the opening and closing of the valve are realized; In order to keep the valve stable after opening and closing, the transmission rod 3 is locked by the locking component, the screw rod 15 is driven to rotate by the operation of the stepping motor 17, the screw rod 15 drives the two groups of sliding blocks 11 on the screw rod to synchronously and relatively move, the two groups of sliding blocks 11 drive the two groups of connecting plates 12 on the screw rod to synchronously and relatively move, the two groups of connecting plates 12 drive the two groups of mounting plates 13 to synchronously and relatively move, the two groups of mounting plates 13 drive the two groups of guide frames 14 to synchronously and relatively move, the two groups of guide frames 14 pull the two groups of rotating rods 5 to synchronously and relatively move, the rotating rods 5 rotate in an arc shape around pins on the rotating rods 5 slide on the guide frames 14, and meanwhile, the rotating rods 5 rotate in an arc shape, The guide frame 14 can rotate along the pin on the guide frame, and the two groups of rotating rods 5 drive the two groups of clamping plates 6 to rotate, so that the two groups of clamping plates 6 clamp and lock the transmission rod 3, and the clamping plates 6 lock the transmission rod 3 through clamping force; Through fixed cover being equipped with holding ring 7 on transfer line 3, when splint 6 centre gripping transfer line 3, lug 9 on splint 6 and the draw-in groove 8 lock on the holding ring 7, lug 9 and the lock of draw-in groove 8 for transfer line 3 can't rotate, when having avoided splint 6 to take place to become flexible easily, transfer line 3 takes place to rotate, through increasing lug 9 and draw-in groove 8 resistance, the clamping force of cooperation splint 6 is favorable to improving the locking effect.

The working principle is that the existing locking structure is used for preventing the valve position from changing by fixing the transmission rod 3 of the multi-rotation valve, but the locking structure is easy to loosen, so that the locking effect is poor, the opening and closing stability of the valve is affected, the driving motor 2 is operated to drive the transmission rod 3 to rotate, the transmission rod 3 drives the worm 20 to rotate, the worm 20 drives the worm wheel 19 to rotate, and the worm wheel 19 drives the valve rod 18 to rotate, so that the opening and closing of the valve are realized; in order to keep the valve stable after opening and closing, a locking assembly is used for locking the transmission rod 3, a stepping motor 17 is used for operating, a screw rod 15 is driven to rotate, the screw rod 15 drives two groups of sliding blocks 11 on the screw rod to synchronously and relatively move, the two groups of sliding blocks 11 drive two groups of connecting plates 12 on the screw rod to synchronously and relatively move, the two groups of connecting plates 12 drive two groups of mounting plates 13 to synchronously and relatively move, the two groups of mounting plates 13 drive two groups of guide frames 14 to synchronously and relatively move, the two groups of guide frames 14 pull the two groups of rotating rods 5 to synchronously and relatively move, the two groups of rotating rods 5 rotate around pins on the guide frames 14, the rotating rods 5 can enable the guide frames 14 to rotate along the pins on the guide frames in the arc rotation process, and the two groups of rotating rods 5 drive two groups of clamping plates 6 to clamp and lock the transmission rod 3, so that the clamping plates 6 can lock the transmission rod 3 through clamping force; through fixed cover being equipped with holding ring 7 on transfer line 3, when splint 6 centre gripping transfer line 3, lug 9 on splint 6 and the draw-in groove 8 lock on the holding ring 7, lug 9 and the lock of draw-in groove 8 for transfer line 3 can't rotate, when having avoided splint 6 to take place to become flexible easily, transfer line 3 takes place to rotate, through increasing lug 9 and draw-in groove 8 resistance, the clamping force of cooperation splint 6 is favorable to improving the locking effect.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims

1. The utility model provides a multi-rotary valve electric actuator locking structure which is characterized in that the multi-rotary valve electric actuator locking structure comprises a box body (1), a driving motor (2) is installed in the box body (1), a transmission rod (3) is installed on an output shaft of the driving motor (2), the other end of the transmission rod (3) is rotationally connected with the inner wall of the box body (1) through a bearing, a locking component is installed on the transmission rod (3), the locking component comprises a supporting frame (4), two groups of rotating rods (5) are installed on the supporting frame (4) through pin rotation, a clamping plate (6) is welded on the rotating rods (5), the clamping plate (6) is of an arc-shaped structure, a positioning ring (7) is fixedly sleeved on the transmission rod (3), a clamping groove (8) is formed in the positioning ring (7), a lug (9) is fixedly installed on the inner wall of the clamping plate (6), a sliding groove (10) is formed in a bottom plate of the box body (1), two groups of sliding blocks (11) are symmetrically installed in the sliding groove (10), a connecting plate (12) is welded on the connecting plate (13), a rotating rod (5) is arranged in the guide frame (14).

2. The multi-turn valve electric actuator locking mechanism of claim 1, wherein: screw rods (15) are rotatably arranged between the inner walls of the sliding grooves (10) through bearings, and threads on the screw rods (15) are symmetrically opposite.

3. The multi-turn valve electric actuator locking mechanism of claim 1, wherein: the two groups of sliding blocks (11) are sleeved on the periphery of the screw rod (15), and the sliding blocks (11) are provided with threads and slide with the screw rod (15) in a matched manner.

4. The multi-turn valve electric actuator locking mechanism of claim 1, wherein: a placing groove (16) is formed in the bottom plate of the box body (1), a stepping motor (17) is installed in the placing groove (16), and an output shaft of the stepping motor (17) is fixedly connected with one end of the screw rod (15).

5. The multi-turn valve electric actuator locking mechanism of claim 1, wherein: a valve rod (18) penetrates through the bottom plate of the box body (1), and a worm wheel (19) is fixedly sleeved on the valve rod (18).

6. The multi-turn valve electric actuator locking mechanism of claim 1, wherein: the middle section of the transmission rod (3) is a worm (20), and the worm (20) is meshed with the worm wheel (19).