CN217003324U

CN217003324U - Valve shifting fork driving actuator

Info

Publication number: CN217003324U
Application number: CN202123186661.2U
Authority: CN
Inventors: 史强修; 张大政; 李辉
Original assignee: Flowserve Fluid Motion and Control Suzhou Co Ltd
Current assignee: Flowserve Fluid Motion and Control Suzhou Co Ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-07-19
Anticipated expiration: 2031-12-17

Abstract

The utility model discloses a valve shifting fork driving actuator, which comprises a shell, wherein a rotatable shifting disc is arranged in the shell, the shifting disc is fixedly connected with a shifting fork arranged on the shell through a pivot, and the shifting disc and the shifting fork rotate coaxially; the shifting disc is provided with a rectangular sliding groove, the axis of the rectangular sliding groove penetrates through the axis of the shifting fork, and a rectangular block matched with the rectangular sliding groove is arranged in the sliding groove in a sliding mode. The utility model has the following beneficial effects: the design is exquisite, and the synchronous belt and the shifting fork can be prevented from slipping through fixedly connecting the shifting disc and the shifting fork, so that the safety is improved; drive actuating cylinder and pass through slider drive rectangular block and remove, can carry out accurate control to the position of dialling the driving disk, ensure the accuracy in the working process, in addition, drive actuating cylinder's price ratio and lower, the expense of reducible enterprise's expense promotes the enterprise development.

Description

Valve shifting fork driving actuator

Technical Field

The utility model relates to the technical field of actuating mechanisms, in particular to a valve shifting fork driving actuator.

Background

The pneumatic actuator is an actuating device for opening and closing or regulating a valve by air pressure, is also called a pneumatic actuating mechanism or a pneumatic device, but is generally called a pneumatic head. Pneumatic actuators are sometimes also equipped with certain auxiliary devices. Commonly used valve positioners and hand wheel mechanisms. The valve positioner is used for improving the performance of the actuator by utilizing a feedback principle, so that the actuator can realize accurate positioning according to a control signal of the controller. The hand wheel mechanism is used for directly operating the control valve to maintain normal production when the control system has no power supply, no air supply, no output of the controller or failure of the actuating mechanism.

Along with the continuous development of computer technology, the automation field is more and more, and valve controller's requirement is more and more, and at present, common valve controller in the market includes shift fork and driving motor usually, and the cover is equipped with from the driving wheel on the shift fork, and the cover is equipped with the action wheel on the driving motor, and the action wheel is connected through driving belt between with the follow driving wheel. However, this mode has very big hidden danger, and driving belt uses for a long time, can appear wearing and tearing, can appear skidding from the driving wheel, action wheel and between the driving belt, can't guarantee the security. In addition, the driving motor can meet the requirement of using a large shifting fork only by using a high-power motor, the price of the high-power motor is expensive, the expenditure of enterprises is increased, and the enterprise development is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides a valve shifting fork driving actuator.

The purpose of the utility model is realized by the following technical scheme:

a valve shifting fork driving actuator comprises a shell, wherein a rotatable shifting disc is arranged in the shell, the shifting disc is fixedly connected with a shifting fork arranged on the shell through a pivot, and the shifting disc and the shifting fork rotate coaxially; a rectangular sliding groove is formed in the poking disc, the axis of the rectangular sliding groove penetrates through the axis of the poking fork, a rectangular block matched with the rectangular sliding groove is arranged in the rectangular sliding groove in a sliding mode, and the sliding track of the rectangular block is parallel to the central axis of the shell; a driving air cylinder is arranged in the shell, a sliding block is fixedly arranged on an air cylinder shaft of the driving air cylinder, a shaft pin is arranged on the sliding block through a pivot, and the other end of the shaft pin is connected with the rectangular block through the pivot.

Preferably, a guide rod is fixedly arranged in the shell, and the central axis of the guide rod is parallel to the central axis of the cylinder shaft of the driving cylinder; and the sliding block is provided with a guide hole matched with the guide rod.

Preferably, the slider is provided with an opening, and a cylinder shaft of the driving cylinder can be extended and arranged in the opening to be fixedly connected with the slider.

Preferably, the shifting fork is hollow cylindrical, the shifting disc is provided with a clamping arm extending, and the clamping arm is provided with a welding surface identical to the outer contour surface of the shifting fork.

Preferably, two poking disks are arranged in the shell and are respectively positioned at two ends of the poking fork.

Preferably, the drive cylinder is replaced by a linear motor.

The utility model has the following beneficial effects:

1. the design is exquisite, and the synchronous belt and the shifting fork can be prevented from slipping through fixedly connecting the shifting disc and the shifting fork, so that the safety is improved;

2. the driving cylinder drives the rectangular block to move through the sliding block, the position of the poking disc can be accurately controlled, the accuracy in the working process is ensured, in addition, the price of the driving cylinder is lower, the expense of enterprise cost can be reduced, and the enterprise development is promoted;

3. the guide hole is matched with the guide rod, so that the stability of the sliding process of the sliding block can be improved, the sliding block is prevented from shaking, and the sliding block has wide applicability.

Drawings

The technical scheme of the utility model is further explained by combining the accompanying drawings as follows:

FIG. 1: perspective view of a preferred embodiment of the present invention;

FIG. 2: top view of a preferred embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art in light of these embodiments are intended to be within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 2, the utility model discloses a valve shifting fork driving actuator, which comprises a housing 1, wherein a rotatable shifting disk 2 is arranged in the housing 1, the shifting disk 2 is positioned at two ends of a shifting fork 10, the shifting fork 10 is hollow cylindrical, a pivot is arranged on the housing 1, and the center of circle of the shifting fork 10 is concentric with the center of circle of the motion track of the disk 2. In the preferred embodiment, the dial 2 has an extended catch arm with the same weld surface as the outer profile surface of the fork 10. The poking disc 2 is welded with the shifting fork 10, so that slipping between the synchronous belt and the shifting fork can be avoided, and safety is improved. Certainly, the shifting disk 2 and the shifting fork 10 may be separated, and then fixed together by bolts or welding, which all belong to the protection scope of the present invention and are not described herein.

A rectangular sliding groove 21 is formed in the poking disc 2, the axis of the rectangular sliding groove 21 penetrates through the axis of the poking fork 10, and a rectangular block 3 matched with the rectangular sliding groove 21 is arranged in the rectangular sliding groove 21 in a sliding mode. A driving cylinder is arranged in the shell 1, a sliding block 4 is fixedly arranged on a cylinder shaft of the driving cylinder, a shaft pin 41 is arranged on the sliding block 4 through a pivot, and the other end of the shaft pin 41 is connected with the rectangular block 3 through a pivot. The driving cylinder drives the rectangular block to move through the sliding block, and then drives the poking disc to rotate. The position of driving disk can be carried out accurate control to driving actuating cylinder, guarantees the accuracy in the working process. In addition, the driving cylinder is low in price, the expense of enterprise cost can be reduced, and a linear motor or other servo motors are also possible. In the above embodiment, the slider 4 is provided with an opening 43, and the cylinder shaft of the driving cylinder can extend into the opening 43 and is fixedly connected with the slider 4.

A guide rod 5 is fixedly arranged in the shell 1, and the central axis of the guide rod 5 is parallel to the central axis of the cylinder shaft of the driving cylinder; the slide block 4 is provided with a guide hole 42 matched with the guide rod 5. The guide hole is matched with the guide rod, so that the stability of the sliding block in the sliding process can be improved, the sliding block is prevented from shaking, and the sliding block has wide applicability.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. Valve shift fork drive executor, its characterized in that: the automatic transmission gear comprises a shell (1), wherein a rotatable shifting disc (2) is arranged in the shell (1), the shifting disc (2) is fixedly connected with a shifting fork (10) which is arranged on the shell (1) through a pivot, and the shifting disc (2) and the shifting fork (10) rotate coaxially; a rectangular sliding groove (21) is formed in the poking disc (2), the axis of the rectangular sliding groove (21) penetrates through the axis of the poking fork (10), and a rectangular block (3) matched with the rectangular sliding groove (21) is arranged in the rectangular sliding groove in a sliding mode; the casing (1) is provided with a driving cylinder, a sliding block (4) is fixedly arranged on a cylinder shaft of the driving cylinder, a shaft pin (41) is arranged on the sliding block (4) through a pivot, and the other end of the shaft pin (41) is connected with the rectangular block (3) through the pivot.

2. The valve fork drive actuator of claim 1, wherein: a guide rod (5) is fixedly arranged in the shell (1), and the central axis of the guide rod (5) is parallel to the central axis of the cylinder shaft of the driving cylinder; the slide block (4) is provided with a guide hole (42) matched with the guide rod (5).

3. The valve fork drive actuator of claim 1, wherein: an opening (43) is formed in the sliding block (4), and a cylinder shaft of the driving cylinder can extend into the opening (43) and is fixedly connected with the sliding block (4).

4. The valve fork drive actuator of claim 1, wherein: the shifting disc (2) is welded with the shifting fork (10).

5. The valve fork drive actuator of claim 4, wherein: the shifting fork (10) is in a hollow cylindrical shape, the shifting disc (2) is provided with a clamping arm extending to be placed, and the clamping arm is provided with a welding surface the same as the outer contour surface of the shifting fork (10).

6. The valve fork drive actuator of claim 1, wherein: two poking disks (2) are arranged in the shell (1), and the poking disks (2) are respectively located at two ends of the poking fork (10).

7. The valve fork drive actuator of claim 1, wherein: the driving cylinder is replaced by a linear motor.