KR20100005843A - Rotary type actuator - Google Patents

Abstract

PURPOSE: A rotary actuator is provided to facilitate the regulation of the rotation angle of the drive shaft and to diversify the stroke. CONSTITUTION: A piston(30) is installed to move in an actuator body(10) of hollow cylinder shape. A drive shaft(50) is linked with the piston. A rotation angle regulator is installed on a cap(12) and controls the rotation angle of the drive shaft. The cap is attached to the drive shaft or actuator body to seal both sides of the actuator body.

Description

Rotary Actuator Device {Rotary Type Actuator}

The present invention relates to a rotary actuator device for driving valves installed for opening and closing of various fluid pipes, and more particularly to easily adjust the drive shaft rotation angle of the actuator, as well as to adjust the size of the actuator by varying the operating stroke. This is possible and in particular relates to a rotary actuator device which realizes miniaturization of the actuator.

Various industries (plants) are provided with various types of pipelines for transporting harmful gases or powders as raw materials, and such pipelines are provided with valves for opening and closing the lines at intervals or at necessary positions.

For example, a valve body is installed between pipes, and a disk installed on a rotation shaft in the valve body rotates to seal or open a pipe (pipe).

Therefore, the valve installed in most pipelines is provided with an actuator for rotationally driving the valve rotation shaft, or handles for manual operation by an operator.

On the other hand, a representative of the actuators linked to the valve for operation operation is a rotary actuator (Rotary Type Actuator) (see Fig. 1).

However, known conventional rotary actuators have been inconvenient to adjust the rotation angle of the drive shaft which is connected to the valve rotation shaft and driven to rotate it.

In addition, in the case of the conventional rotary actuator, there is another problem in that the overall size of the actuator is considerably increased by the length of the spring in the case of a single-action type in which the spring is embedded.

That is, miniaturization of parts (devices) has been difficult with conventional one-way actuating actuators.

Accordingly, the applicant of the present invention has proposed the present invention which enables not only the adjustment of the drive shaft rotation angle of the rotary actuator, but also the adjustment of the operating stroke, and in particular, the miniaturization.

The present invention has been proposed in order to solve the conventional problems as described above, the objective aspect is to facilitate the adjustment of the drive shaft rotation angle of the actuator, as well as to adjust the size of the actuator by varying the operating stroke, in particular the miniaturization of the actuator It is to provide a rotary actuator that implements.

As a technical aspect for achieving the above object, the present invention, the device body;

A piston member fluidly provided on the apparatus body;

A drive shaft member provided to rotate as the piston member in association with the piston member; And,

Rotation angle adjustment means provided in the drive shaft member to adjust the rotation angle of the drive shaft member;

It provides a rotary actuator device configured to include.

In another aspect, the present invention, the device body;

A piston member fluidly provided on the apparatus body; And,

A drive shaft member provided to pivot as the piston member in association with the piston member so as to adjust the operation stroke;

It provides a rotary actuator device configured to include.

Preferably, the drive shaft member may further include a rotation angle adjusting means provided to adjust the rotation angle of the drive shaft member.

More preferably, the device body is provided as a cylinder with a hollow inside, both sides are sealed with a cap member, the device body includes an air supply port and an air discharge port, the piston member in the device body through the air supply and discharge It is configured to make the flow of.

The apparatus may further include an elastic member interposed between the cap member and the piston member provided in the apparatus body.

At this time, the piston member, the piston body which is disposed on both sides of the device body and flows as air, and is provided integrally in the piston body is configured to include a piston for transmitting the rotational force to the drive shaft member in conjunction with the drive shaft member Can be.

The drive shaft member may include a drive shaft rotatably assembled to the device body in a longitudinal direction and one end protruded out of the device body, and a crank provided to the drive shaft and associated with a piston included in the piston member. Can be configured.

Preferably, the crank may be provided with a pin flow opening through which the pin is assembled to the pin hole formed in the piston.

More preferably, the drive shaft member is assembled to the device body rotatably in the longitudinal direction and one end of the drive shaft protruding out of the device body, and the crank is provided on the drive shaft, the piston included in the piston member is linked And a pin flow opening through which a pin assembled to one of the plurality of pinholes formed in the piston penetrates, so that the stroke may be adjusted according to the pin position assembled to the piston.

At this time, the rotation angle adjustment means, the rotation angle adjustment cam provided in the drive shaft member, the adjustment bolt is fastened to the device body corresponding to the rotation position of the adjustment cam.

Alternatively, the rotation angle adjustment means, the rotation angle adjustment cam installed on the drive shaft member and the first adjustment bolt is fastened to the device body corresponding to the rotation position of the adjustment cam; And a second adjustment bolt which is fastened to the cap member provided in the apparatus body and adjusts the rotation angle by adjusting the flow width of the piston body provided in the piston member. It may be configured to include any one.

According to the rotary actuator device of the present invention, it is possible not only to easily adjust the rotation angle of the rotation axis of the actuator, but also to adjust the size of the actuator by varying the rotation stroke, and in particular, to provide the effect of enabling the miniaturization of the actuator. It is.

Hereinafter, a preferred embodiment of the present invention according to the accompanying drawings.

First, Figures 1 and 2 show the assembled and disassembled state of the rotary actuator device 1 according to the present invention in a perspective view and an exploded perspective view, respectively.

However, the rotary actuator device 1 of the present invention as shown in FIG. 1A without an elastic member, that is, a spring, and FIG. 1B having a long axis elastic member 90 or a plurality of short axis elastic members 90 'is provided. And the apparatus of FIG. 2.

Such a device of the present invention will be described in detail below with reference to FIG. 2.

First, as shown in FIG. 2, in one embodiment of the present invention, the rotary actuator device 1 is largely supplied with the device body 10 and the air A supplied to the device body 10 (see FIG. 3). A piston member 30 provided to be movable in the apparatus body, a drive shaft member 50 provided to rotate as a piston member flowing in association with the piston member, and the drive shaft member provided to adjust the rotation angle of the drive shaft member. It may be configured to include a rotation angle adjustment means 70 provided to ever.

Therefore, the high pressure air A (see FIGS. 3A and 3B) supplied to the apparatus body 10 in the rotary actuator apparatus 1 of the first embodiment of the present invention is disposed on both sides of the inside of the apparatus body 10. The piston member 30 to be flowed (forward, backward), the drive shaft member 50 associated with the piston member 30 is driven to rotate by a set rotation angle.

At this time, the disk rotation shaft in the valve, such as a butterfly valve of the pipeline not shown in connection with the drive shaft member 50 is driven to rotate the opening and closing of the pipeline through the valve.

The rotation angle adjusting means 70 included in the rotary actuator device 1 of the first embodiment is provided in the drive shaft member 50 so as to adjust the rotation angle of the drive shaft member. Explain.

On the other hand, the rotary actuator device 1 of another embodiment of the present invention, as shown in Figs. 2 and 6b, can flow to the device body as the device body 10 and the air (A) supplied to the device body 10. It may be configured to include a piston member 30, and a drive shaft member 50 is provided to rotate as a piston member in association with the piston member and the operating stroke (L1 or L2) to be adjustable.

Accordingly, in the rotary actuator device 1 of the second embodiment, the piston member 30 linearly moves as a high-pressure air A supplied to the device body, and the drive shaft member 50 associated therewith is driven to rotate. The same as the first embodiment, but as shown in FIG. 6B and will be described in detail below, the connection position of the drive shaft 52 of the drive shaft member 50 and the piston 34 of the piston member 30 is varied so that the stroke is changed from L1. The difference is that it can be changed to L2.

Meanwhile, the rotary actuator device 1 of the second embodiment may further include a rotation angle adjusting means 70 provided in the driving shaft member or the device body 10 to adjust the rotation angle of the driving shaft member. have.

The rotation angle adjusting means 70 provided in the drive shaft member 50 or the device body 10 will be described later in detail.

On the other hand, the device body 10 is provided in the device of the first and second embodiments of the present invention, the inside is provided as a hollow cylinder, but both sides are sealed and assembled by the cap member (12).

However, the length of the gap member 12 is adjusted according to the shape of the elastic member (90 in FIG. 3 or 90 'in FIG. 2) to be embedded.

For example, as shown in Figures 2 and 3, when one long-axis elastic member 90 is built on both sides of the device body 10 is built in the cap member 12 is elongated in accordance with the elastic member, on the contrary When the two short elastic members 90 'or the elastic member is not embedded, the length of the cap member 12 is short and the same shape.

Therefore, when using a plurality of elastic members (90 '), since all of the cap member 12 of the same shape is used when the elastic member is not built in, it is necessary to remove the elastic member and assemble the same cap member when using the device. Component compatibility is more preferable than when using one long-axis elastic member 90.

Meanwhile, as illustrated in FIGS. 1 to 3, the air supply ports 12a and 12b and the air discharge ports 14a and 14b connected to an air supply and discharge lake (not shown) are connected to the front of the apparatus body 10. It is provided.

Therefore, as shown in FIG. 3A, when air A is supplied to one air supply port 12a, air A is supplied to the outer portion of the piston body 32 of the piston member 30 (the cap member side) and packed. Piston body 32 having (P) is forward flow integrally with the piston (34).

On the contrary, as shown in FIG. 3B, when the air A is supplied to the other air supply port 12b, the air is supplied between the piston bodies 32 so that the piston body flows backward.

As a result, the piston body 32 of the piston member 30 along the air supply path is moved forward and backward inside the device body, and the piston 34 is also forward and backward integrally therewith, as described below. The crank 54 of the drive shaft member 50 is rotated.

1 and 2, when air is supplied to the apparatus body and the piston body and the piston move, the remaining air is discharged to the outside through the air outlets 14a and 14b formed in the apparatus body 10.

That is, in the apparatus 1 of the present invention, the device body 10 and the piston member 30 are driven in the same manner as the normal cylinder drive, but only the drive shaft member 50 is linked so that instead of the normal cylinder rod, There is a difference in including a drive shaft member for converting a linear motion into a rotational motion (circular motion).

On the other hand, as shown in Figure 1a, the rotary actuator device (1) of the type that does not have a built-in elastic member is called a double-actuated actuator in which the piston is operated by air pressure in accordance with the air supply and discharge, as shown in Figure 1b In the case of including the 90 (or the elastic member 90 'of FIG. 2), when the piston 34 moves to narrow each other, as shown in FIGS. When the piston is far away, it moves by the elastic force of the elastic member and is called a single-actuated actuator.

On the other hand, as shown in Figure 2, in the rotary actuator device 1 of the present invention, the piston member 30 is disposed on both sides of the device body 10, the piston body 32 is flowed as air (A) And a piston 34 which is integrally provided at the piston body 32 and connected to the driving shaft member 50 to transmit the rotational force to the driving shaft member.

At this time, the piston body 32 is a circular plate as a plurality of packing (P) is assembled on the edge surface is not leaked when air supply from the inside of the device body 10 of the cylinder is to be advanced or reversed by the air pressure.

The piston 34 is integrally formed on the inner surface of the piston body 32, and is formed in two stages so as to secure a space into which the crank 54 of the drive shaft member 50 to be described in detail is inserted. have.

Therefore, as described above, when the piston body moves forward and backward by air, the piston 34 integrally moves forward and backward.

Next, as shown in Figures 2 and 3, in the rotary actuator device 1 of the present invention, the drive shaft member 50 is assembled rotatably in the longitudinal direction to the device body 10, one end of the device body The drive shaft 52 protrudes to the outside, and the crank 54 is provided on the drive shaft 52, the piston 34 included in the piston member 30 is connected.

2 and 6, the crank 54 of the drive shaft member 50 is circularly inserted between the two-stage pistons 34 as described above, and has a pinhole formed in the piston 34. Fin flow openings 58 penetrating through the pin 56, which is assembled through a bearing member such as a liner 1, are formed opposite to both sides at 36.

Therefore, as shown in FIGS. 2 and 6A, when the piston body 32 and the piston 34 move forward or backward according to the air supply, the crank 54 of the drive shaft member moves forward from the pin flow opening 58 to the pin 56. And rotate as much as backward, so that the drive shaft 52 rotates.

At this time, as shown in Figure 2, the drive shaft 52 is assembled rotatably perpendicular to the device body 10 through the bearing (B) and the bushing.

In addition, the pin flow opening 58 is formed to be longer than the diameter of the pin to ensure a space for compensating the flow of the pin in the crank circular motion during the linear movement of the piston.

On the other hand, as described above, the piston 34 has only one pinhole 36 to which the pin 56 passing through the flow opening of the crank 54 is assembled, as shown in FIG. 6A (the apparatus of the first embodiment) or As shown in FIG. 6B, two 36a and 36b may be formed to adjust the distance from the driving shaft 52 from L1 to L2 according to the assembly position of the pin 56.

Therefore, in the case of FIG. 6B, the drive shaft member 50 is characterized in that the stroke L1 or L2 is variably adjusted according to the pin position assembled to the piston.

For example, in the case of using the elastic member 90 'that is a plurality of short-circuit spring in Figure 2 it is preferable to assemble the pin 56 in the pinhole 36b in the form having a short-axis stroke of L2 in Figure 6b, In this case, since the stroke L2 with the drive shaft center becomes shorter than L1 even when the piston 34 moves in the same manner, the rotational force of the crank 54 is reduced to reduce the load applied when the drive shaft is rotated.

At this time, it is preferable that the rotation angle adjusting means 70 described in detail below also be adjusted to the operating stroke.

Therefore, in order to reduce the drive shaft rotational load, it is preferable to adjust the assembling position of the pin 56 (passing position of the crank flow opening 58) to have the stroke of L2 in Fig. 6B.

At this time, in the rotary actuator device 1 of the present invention, as shown in Figs. 2 and 4a, b, the rotation angle adjustment means 70, the rotation angle adjustment is assembled to the drive shaft 52 of the drive shaft member 50. Cam 72 and the adjustment bolt 74 is fastened to the device body 10 in response to the rotational position of the adjustment cam.

Therefore, as shown in FIGS. 4A, 4B and 5, in the double-acting rotary actuator device 1 in which the elastic member 90 is not incorporated, the crank rotation angle at the time of piston movement-crank rotation is fastened to the adjustment bolt 74. Can be adjusted according to length.

On the other hand, as shown in Figures 2 and 3a, 3b, in the rotary actuator device 1 of the present invention, the rotation angle adjustment means 70, and the rotation angle adjustment cam 72 is provided on the drive shaft member 30 and A first adjusting bolt 74 fastened to the device body 10 corresponding to the rotational position of the adjusting cam; And a second adjustment bolt 76 fastened to the cap member 12 provided in the apparatus body 10 to adjust the rotational width of the piston body 32 provided in the piston member to adjust the rotation angle. It may be configured to include any one.

That is, as shown in FIGS. 3 and 4, the outer surface of the piston body 32 is in contact with the second adjusting bolt 76 fastened to the center of the cap member 12 to limit the movement of the piston body 32. It is also possible to adjust the crank rotation angle of the drive shaft member 50 linked thereto.

Meanwhile, although FIG. 4 shows the second adjusting bolt 76 and the adjusting cam 72 and the first adjusting bolt 74 in one apparatus, the adjusting cam 72 and the first adjusting bolt ( The rotation angle adjusting means 70 of 74 is used.

For example, as shown in FIG. 7, the second adjusting bolt 76 of FIG. 3 is in contact with the outer surface of the piston body 32 such that the piston body no longer moves outward, and thus the crank and the drive shaft ( 52, the rotation angle θ1 can be adjusted. However, in the case of the adjustment cam 72, the rotation angle θ1 is provided on the drive shaft 52. When the second adjustment bolt 74 and the adjustment cam come into contact with each other, In order to adjust, the adjustment cam makes it possible to adjust the rotation angle θ2 on both sides.

Therefore, it is preferable to use the rotation angle adjustment means 70 of the adjustment cam 72 and the second adjustment bolt 74.

On the other hand, as shown in Figure 2, in the case of the device having a built-in elastic member 90 of one long-axis spring, the cap member 12 is elongated so that the elastic member 90 is embedded therein as shown in Figure 3, the cap member It can be supported as a spring support member 92 that is assembled to.

Alternatively, as shown in FIGS. 2 and 5, when the elastic members 90 'of the plurality of single-axis springs are included, the respective spring supports 92' are assembled to the piston body outer surface and the cap member inner surface to be springs. The elastic members 90 'are supported.

In this case, the cap member 12 may be shrunk as compared with the case where the other elastic member 90 is provided.

In particular, as shown in Figures 2, 4 and 5, when using a plurality of spring-like elastic member 90 'and when not using the elastic member the cap member 12 may use the same parts.

Therefore, in the case of using the elastic members 90 'which are a plurality of springs, the size of the cam member is reduced than in the case of using the other large elastic member 90, thereby miniaturizing the overall size (length) of the rotary actuator device 1. Makes it possible.

While the invention has been shown and described in connection with specific embodiments so far, it will be appreciated that the invention can be modified and modified in various ways without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

1 shows a rotary actuator according to the present invention,

(a) is a schematic perspective view of a double actuated actuator

(b) is a perspective view showing a single actuated actuator with a spring

Figure 2 is an exploded perspective view showing the overall configuration of a rotary actuator according to the present invention

3A and 3B are plan views showing the operating state of the actuator of the present invention based on a single actuated actuator.

Figures 4a and 4b is a plan view showing the operating state of the actuator of the present invention on the basis of a double-actuated actuator

FIG. 5 is a plan view showing a single actuated actuator incorporating another type of spring; FIG.

6A and 6B are main views showing an example in which the operating strokes L1 and L2 are adjusted.

7 is a graph for explaining the difference between the driving shaft rotation angle adjustment of the cam type using the stopper bolt (second adjusting bolt) and the adjustment cam and the first adjustment bolt with reference to FIG.

Explanation of symbols on the main parts of the drawings

1 ..... Actuator Device 10 .... Device Body

12 .... Cap member 30 .... Piston member

32 .. Piston Body 34 ..... Piston

36,36a, 36b .... Pinhole 50 .... Drive shaft member

52 .... drive shaft 54 .... crank

56 .... pin 58 .... pin flow opening

70 .... Rotation angle adjustment means 72 .... Rotation angle adjustment cam

74 .... 1st adjusting bolt 76 .... 2nd adjusting bolt

Claims (11)

Device body 10; A piston member 30 provided to be movable to the apparatus body 10; A drive shaft member 50 provided in rotation with the piston member so as to rotate as a piston member; And, Rotation angle adjustment means provided in the drive shaft member to adjust the rotation angle of the drive shaft member; Rotary actuator device configured to include. Device body 10; A piston member 30 provided to be movable to the apparatus body 10; And, A drive shaft member 50 which is connected to the piston member so as to adjust the operation stroke and is provided to rotate as a piston member; Rotary actuator device, characterized in that configured to include. The method of claim 2, And a rotation angle adjusting means provided on the driving shaft member or the cap member provided in the apparatus body to adjust the rotation angle of the driving shaft member. The method according to claim 1 or 2, The device body 10, the inside is provided as a hollow cylinder, both sides are sealed with a cap member 12, The device body (10) comprises an air supply port and the air outlet port, the rotary actuator device, characterized in that the flow of the piston member 30 in the device body (10) through the air supply and discharge. The method of claim 4, wherein The rotary actuator device, characterized in that it further comprises an elastic member interposed between the cap member 12 and the piston member 30 provided in the device body (10). The method of claim 4, wherein The piston member 30, the piston body 32 which is disposed on both sides of the device body 10 flows as air; And, A piston (34) integrally provided at the piston body (32) to rotate the drive shaft member in association with the drive shaft member (50); Rotary actuator device, characterized in that configured to include. The method of claim 1, The drive shaft member 50, a drive shaft 52 is rotatably assembled to the device body 10 in the longitudinal direction and a part protruding out of the device body; And, A crank (54) provided on the drive shaft (52) and associated with a piston (34) included in the piston member (30); Rotary actuator device, characterized in that configured to include. 8. The rotary actuator device according to claim 7, wherein the crank (54) is provided with a pin flow opening (58) through which a pin (56) assembled in a pin hole (36) formed in the piston (34). The method of claim 2, The drive shaft member 50, the drive shaft 52 is rotatably assembled to the device body 10 in the longitudinal direction and a part protruding out of the device body 52; A crank (54) provided on the drive shaft (52) and associated with a piston (34) included in the piston member (30); And, A pin flow opening 58 through which a pin 56 is assembled in one of a plurality of pin holes 36a and 36b formed in the piston 34; Rotary actuator device, characterized in that configured to adjust the operating stroke in accordance with the pin position is assembled to the piston. The method of claim 1, The rotation angle adjustment means 70 includes a rotation angle adjustment cam 72 provided on the drive shaft member 50, and an adjustment bolt 74 on the device body 10 corresponding to the rotation position of the adjustment cam. Rotary actuator device, characterized in that the fastened. The method of claim 3, The rotation angle adjustment means 70, the first adjustment bolt that is fastened to the device body 10 corresponding to the rotation angle adjustment cam 72 and the rotation position of the adjustment cam installed on the drive shaft member 30 ( 74); And, A second adjustment bolt 76 fastened to the cap member 12 provided in the apparatus body 10 to adjust a rotation angle by adjusting a flow width of the piston body 32 provided in the piston member; Rotary actuator device comprising any one of.

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