KR102177468B1 - Hydraulic rotary actuator - Google Patents

Abstract

The present invention relates to a hydraulic shaking actuator which can structurally resolve oil leakage problems by a completely new moving vane and packing structure different from a conventional technique, and greatly improve durability by maintaining the same performance as initial installation for a long period even if packing is abraded. The hydraulic shaking actuator comprises: a hollow cylinder wherein a front housing in the front and a rear housing in the rear are symmetrically coupled in the front and rear with respect to a body at the center to face each other; a rotary shaft inserted into the cylinder in a front and a rear longitudinal direction to be rotatably installed, and provided with a diameter expansion unit formed at the center to be positioned in the body of the cylinder to be stepped; a fixed vane fixed and installed to protrude from the inner circumferential surface of the cylinder toward the inner diameter direction; and a moving vane which is coupled to the outer circumferential surface of the diameter expansion unit of the rotary shaft to protrude toward the outer diameter direction, and rotates the rotary shaft while shaking to the left and right with respect to the fixed vane as working fluid is supplied into the cylinder. The cylinder has a rotation flow path integrally formed in an annular shape in the body, the front housing, and the rear housing to allow the moving vane to shake to the left and right. The rotation flow path of the body has a rectangular cross section, and the rotation flow path of the front housing and the rear housing has a semicircular cross section.

Description

Hydraulic oscillating actuator{HYDRAULIC ROTARY ACTUATOR}

The present invention relates to a hydraulic oscillating actuator, and more particularly, to a hydraulic oscillating actuator in which a movable vane coupled with a rotating shaft rotates left and right according to the supply of hydraulic oil based on a fixed vane fixedly installed in a cylinder and rotates the rotating shaft. will be.

In general, a device that converts pressure energy of hydraulic oil supplied by a hydraulic pump into mechanical energy is collectively referred to as a hydraulic motor or a hydraulic actuator.

These hydraulic actuators are largely classified into three categories according to the motion method, a hydraulic cylinder for linear reciprocating motion, a hydraulic rotary motor for continuous rotary motion, and a hydraulic motion for oscillating motion at a certain angle. There is a hydraulic rotary actuator.

The hydraulic oscillating actuator is widely used in various industrial fields because it has a fast response due to a mechanical force and can exert a large force while miniaturizing a device. These hydraulic oscillating actuators are also largely classified into two types according to the flow of hydraulic pressure as a power source, and there are vane type hydraulic oscillating actuators and piston type hydraulic oscillating actuators. The piston type has the advantage of being more resistant to oil leakage than the vane type, but has a disadvantage in that the overall device is large and complicated. Conversely, the vane type has a compact advantage of a simple structure but is weak against leakage.

Among them, as shown in FIG. 1, the vane-type hydraulic oscillating actuator has a movable vane 40 coupled with the rotating shaft 30 in the cylinder 10 with respect to the fixed vane 20, as shown in FIG. As a structure to rotate the rotary shaft 30, it can be divided into a double vane type and a triple vane type, although not shown in the drawing together with the single vane type of Fig. 1 according to the number of the fixed vanes 20 and the movable vanes 30. , As the number of vanes increases, the rotation angle decreases.

The biggest problem of the vane-type hydraulic oscillating actuator as described above is oil leakage, and occurs at the front end and side surfaces of the movable vane 40. That is, as shown in FIGS. 2 to 6, when hydraulic oil is supplied from the right direction based on the fixed vane 20, the movable vane 40 rotates forward. At this time, the packing 50 is provided at the front end and the side of the movable vane 40, but if the packing 50 does not operate properly, hydraulic oil may leak in the opposite direction beyond the tip and side of the movable vane 40 Therefore, it has a very significant impact on performance.

In order to solve the oil leakage problem of such a hydraulic oscillating actuator, the'multi-stage seal for rotary actuators' in Registration Patent Publication No. 10-1300483 and the'Seal structure and oscillation type actuator including the same' in Registration Patent Publication No. 10-1367693 are presented. Has become. That is, there is an objective of catching leakage more reliably with a plurality of multi-stage seal structures, and a purpose of solving the leakage problem by reinforcing the tip and side of the rectangular 3-stage seal structure.

However, the hydraulic oscillating actuator according to the prior art as well as the conventional registered patent described above has a shape of the movable vane 40 having a rectangular shape in cross section as shown in Figs. 2 to 6, and accordingly, the inside of the cylinder 10 The shape of the rotating flow path is also bound to have a rectangular shape in cross section.

Therefore, first, even if the packing 50 installed on the movable vane 40 seals the front end and the side of the movable vane 40, the problem that the rotational passage cannot be completely sealed, and the second shape and cylinder of the movable vane 40 10) Since the shape of the inner rotating flow path itself has a square shape in cross section, there is a problem that oil leakage easily occurs through the corners.

In this respect, in the case of the hydraulic oscillating actuator according to the prior art, whether the structure of the packing 50 fixed to the front end and the side of the movable vane 40 is single or multistage, a leakage problem occurs due to the fundamental shape problem of the packing 50 It has no choice but to be overcome through frequent replacement, so it has no choice but to go with the problem of durability.

The object of the present invention conceived to solve the above problems is to structurally solve the oil leakage problem through a completely new movable vane and packing structure different from the prior art, and even if abrasion of the packing occurs, the same as at the time of initial installation. It is to provide a hydraulic oscillating type actuator that can significantly improve durability by maintaining performance for a long time.

In order to achieve the above object, the hydraulic oscillating actuator according to the present invention has a hollow inside, and a cylinder coupled so that the front front housing and the rear rear housing of the front are viewed symmetrically back and forth with respect to the central body, It is inserted into the cylinder along the front and rear longitudinal direction so as to be rotatably installed, and a rotation shaft having an enlarged diameter stepped in the center so as to be located inside the body of the cylinder, and a fixedly installed so as to protrude from the inner peripheral surface of the cylinder toward the inner diameter direction. A fixed vane and a movable vane that is coupled to the outer circumferential surface of the rotating shaft to protrude toward an outer diameter, and rotates the rotating shaft while swinging from side to side with respect to the fixed vane according to the supply of hydraulic oil into the cylinder, , The cylinder is integrally formed in an annular shape so that the movable vane swings left and right inside the body, the front housing and the rear housing, and the rotation flow path of the body is rectangular in cross section, and the front housing and the rear housing Each of the rotating flow paths of the housing is characterized in that it has a semicircular shape in cross section.

In addition, the movable vane is characterized in that the front and rear ends are formed to protrude in a semicircular shape so as to form a cross-sectional shape with the rotation passage of the cylinder, and the left and right sides are connected to each other so that the semicircles face each other in a central rectangle.

In addition, further comprising a pair of first packing parts respectively coupled to the left and right side surfaces of the movable vane so as to contact the inner circumferential surface of the rotation channel, the first packing unit, in a ring shape, the outer circumferential surface in contact with the inner circumferential surface of the rotation channel A first packing member and a first insertion portion fixedly coupled with a bolt to the left or right side of the movable vane and inserted into the inner circumferential surface of the first packing member are formed so as to attach the first packing member to the left or right side of the movable vane or It characterized in that it comprises a first packing fixing member fixed to the right side.

In addition, in the first packing fixing member of the first packing part, a first operating oil inflow gap is formed between the outer circumferential surface of the first insertion part and the inner circumferential surface of the first packing member, and a plurality of first operation inflow holes are formed along the circumference of the side surface. It is formed through so as to communicate with the first hydraulic oil inflow gap, and hydraulic oil flows into the first hydraulic fluid inflow gap from each of the first hydraulic fluid inflow holes to pressurize the first packing member in an outer diameter direction to expand it.

In addition, the fixed vane is characterized in that the front and rear ends are formed to protrude in a semicircular shape so as to form a cross-sectional shape with the rotational passage of the cylinder, so that the left and right sides are connected to each other so that the semicircles face each other in a central rectangle.

In addition, further comprising a pair of second packing parts respectively coupled to the left and right side surfaces of the fixed vane so as to contact the inner circumferential surface of the rotation channel, the second packing unit, in a ring shape, the outer circumferential surface in contact with the inner circumferential surface of the rotation channel A second packing member and a second insertion part fixedly coupled to the left or right side of the fixed vane with bolts and inserted into the inner circumferential surface of the second packing member are formed to attach the second packing member to the left or right side of the fixed vane or It characterized in that it comprises a second packing fixing member fixed to the right side.

In addition, in the second packing fixing member of the second packing part, a second hydraulic oil inflow gap is formed between the outer circumferential surface of the second insertion part and the inner circumferential surface of the second packing member, and a plurality of second operation inflow holes are formed along the circumference of the side surface. It is formed through so as to communicate with the second hydraulic oil inflow gap, hydraulic oil flows into the second hydraulic fluid inflow gap from each of the second hydraulic fluid inflow holes, and pressurizes the second packing member in an outer diameter direction to expand it.

The hydraulic oscillating actuator according to the present invention structurally solves the oil leakage problem through a completely new movable vane and a first packing part structure different from the conventional one, and even if abrasion of the first packing member occurs, the first packing fixing member As the hydraulic oil flows through the first hydraulic oil inflow hole and the first hydraulic oil inflow interval of the unit, the first packing member is pressed and expanded in the outer diameter direction, thereby maintaining the same performance as in the initial installation for a long time, thereby significantly improving the durability. have.

In addition, by changing the structure of the movable vane and the first packing part, the shape of the rotating flow path inside the cylinder, the structure of the fixed vane and the second packing part, a further reinforced leakage problem is prevented, as well as the performance and durability of the second packing part. There is an effect that can also bring improvement.

1 is a cross-sectional view showing a single vane type hydraulic swing type actuator according to the prior art,
2 is a perspective view showing a hydraulic swing type actuator according to the prior art,
3 is a cross-sectional view as viewed from line A-A' of the embodiment of FIG. 2,
4 is a cross-sectional view as viewed from line B-B' of the embodiment of FIG. 3,
Figure 5 is an exploded perspective view of the embodiment of Figure 2,
6 is a perspective view of a main part showing an enlarged view of a rotating shaft, a movable vane, and a packing in the embodiment of FIG. 5,
7 is a perspective view showing an embodiment of a hydraulic swing type actuator according to the present invention,
8 is a cross-sectional view as viewed from line C-C' of the embodiment of FIG. 7;
9 is a cross-sectional view as viewed from line D'D' of the embodiment of FIG. 8;
10 is an exploded perspective view of the embodiment of FIG. 7,
FIG. 11 is a perspective view showing an enlarged main part of a rotating shaft, a movable vane, and a first packing part in the embodiment of FIG. 10;
12 is a perspective view of a main part showing an enlarged embodiment of a first packing part or a second packing part installed on a movable vane or a fixed vane among the embodiments of FIG. 10,
13 is an enlarged perspective view of a main part showing another embodiment of a first packing part or a second packing part installed on a movable vane or a fixed vane among the embodiments of FIG. 10;
14 is a cross-sectional view illustrating a process of operating the first packing unit by applying the embodiment of FIG. 13 based on the embodiment of FIG. 8,
15 is a cross-sectional view illustrating a process in which the second packing unit operates by applying the embodiment of FIG. 13 based on the embodiment of FIG. 8.

Hereinafter, a preferred embodiment of the hydraulic oscillating actuator according to the present invention will be described in detail with reference to the accompanying drawings.

The hydraulic oscillating actuator according to the present invention includes a cylinder 100, a rotating shaft 200, a fixed vane 300, and a movable vane 400 as shown in FIGS. 7 to 15, and the cylinder 100 ) Is composed of a body 110, a front housing 120, and a rear housing 130, and an annular rotation channel 140 is formed therein. In addition, it further includes a first packing part 500 and a second packing part 600, the first packing part 500 includes a first packing member 510 and a first packing fixing member 520, , The second packing part 600 may include a second packing member 610 and a second packing fixing member 620.

The cylinder 100 has a hollow cylindrical shape as shown in FIGS. 7 to 10, and the front front housing 120 and the rear rear housing 130 are symmetrical to each other back and forth based on the central body 110. Combined to look at it. At this time, the cylinder 100 is a rotating flow path 140 as shown in FIG. 8 so that the movable vane 400 to be described later swings inside the body 110, the front housing 120, and the rear housing 130. Is formed integrally in an annular shape, and in particular, as shown in FIGS. 9 and 10, the rotation channel 140 of the body 110 is rectangular in cross-section, and the rotation channel of the front housing 120 and the rear housing 130 Each of 140 has a semicircular shape in cross section. In addition, with reference to FIGS. 7 and 8, a control block (not shown) coupled to the upper portion of the cylinder 100 in the drawing provides a supply function of supplying hydraulic oil to the inside of the cylinder 100 and controls the supply of hydraulic oil. It performs a control function, and in other drawings, the control block is omitted.

The rotation shaft 200 is inserted into the cylinder 100 along the front and rear longitudinal direction to be rotatably installed as shown in Figs. 7 to 11, and is centrally positioned to be located inside the body 110 of the cylinder 100. In the enlarged diameter 210 is formed stepped. The rotation shaft 200 is coupled with a movable vane 400 to be described later through an expansion unit 210 to rotate according to the oscillation of the movable vane 400, and an operation unit (not shown) that operates according to the rotation angle is disposed on the output shaft. It is connected to receive the rotational force of the rotation shaft 200 to swing.

As shown in FIG. 9, between the outer circumferential surface of the expanding portion 210 of the rotating shaft 200 and the inner circumferential surface of the body 110 of the cylinder 100 becomes a rectangular rotating passage 140 in cross section, and such a rectangular rotating passage ( 140) A rotation passage 140 is formed in a semicircular shape on the facing surfaces of the front housing 120 and the rear housing 130 in the front and rear directions.

The fixed vane 300 is fixedly installed so as to protrude from the inner circumferential surface of the cylinder 100 toward the inner diameter as shown in FIGS. 8 to 10. This fixed vane 300 is to perform a stopper function when the movable vane 400 to be described later swings, and is to swing the movable vane 400 by a predetermined rotation angle. A second packing part 600 to be described later is also installed in the fixed vane 300, which may be installed in the same configuration as the first packing part 500 coupled to the movable vane 400 to be described later.

The movable vane 400 is coupled to the outer circumferential surface of the enlarged portion 210 of the rotation shaft 200 so as to protrude toward the outer diameter as shown in Figs. 8 to 11, and according to the supply of hydraulic oil into the cylinder 100 The rotation shaft 200 is rotated while swinging left and right based on the fixed vane 300. In the drawing, for convenience of explanation, a single vane type in which the number of fixed vanes 300 and movable vanes 400 are installed one by one is shown, but double vane type by increasing the number of fixed vanes 300 and movable vanes 400 Or it can be configured as a triple vane type. That is, the number of fixed vanes 300 and movable vanes 400 may be determined and designed according to the required rotation angle and torque.

Here, the fixed vane 300 is fixedly installed so as to protrude from the inner circumferential surface of the cylinder 100 toward the inner diameter, and the movable vane 400 is also coupled to protrude toward the outer circumferential surface of the expanding portion 210 of the rotating shaft 200 Therefore, each of the fixed vanes 300 and the movable vanes 400 should have a shape that matches the shape of the rotation channel 140 formed inside the cylinder 100, and the rotation channel 140 inside the cylinder 100 When hydraulic oil is supplied to and rotates while the movable vane 400 swings, a packing part must be provided so that the hydraulic oil supplied in the opposite direction beyond each of the fixed vane 300 and the movable vane 400 does not leak.

First, as shown in FIGS. 8 to 11, the front and rear ends of the movable vanes 400 protrude in a semicircular shape so that they are formed in a cross-sectional shape with the rotation passage 140 of the cylinder 100, so that the left and right sides are semicircles in front and rear in the center rectangle. They have a shape connected to face each other. That is, it has the same shape as the shape of the rotation passage 140 of the cylinder 100 described above.

At this time, a pair of first packing parts 500 are coupled to the left and right sides of the movable vane 400, that is, the first packing part 500 is the rotational passage 140 as shown in FIGS. 8, 10 and 11. A pair is provided to be coupled to each of the left and right side surfaces of the movable vane 400 to contact the inner peripheral surface of ). As shown in FIG. 12, the first packing part 500 has a first packing member 510 having an outer circumferential surface in contact with the inner circumferential surface of the rotation channel 140, and a left side of the movable vane 400 as shown in FIG. Alternatively, a first insertion portion 521 fixedly coupled to the right side with a bolt (B) and inserted into the inner circumferential surface of the first packing member 510 is formed so as to attach the first packing member 510 to the movable vane 400 It includes a first packing fixing member 520 fixed to the left or right side of the.

The first packing member 510 is a member that is in close contact with the rotation channel 140 of the cylinder 100, and is a strong, tough and smooth non-flammable fluororesin having good chemical resistance and maintaining physical properties over a wide temperature range. Polymers are used. Therefore, the outer peripheral surface of the first packing member 510 should be manufactured and installed so that it protrudes in the outer diameter direction than the outer peripheral surface of the left and right sides of the movable vane 400 or the outer peripheral surface of the first packing fixing member 520.

A pair is provided on the left and right sides of the movable vane 400 that swings left and right through the configuration of the first packing part 500 as described above, and the first packing member 510 as a whole along the circumference of the rotation channel 140 It is able to prevent oil leakage due to adhesion. At this time, as the first packing member 510 of the first packing part 500 is worn out due to long use, a leakage problem may occur. To prevent this, the first packing member 510 It is necessary to configure it so that it can be pressed toward and expanded in the outer radial direction.

That is, the first packing fixing member 520 of the first packing part 500 is an outer circumferential surface of the first insertion part 521 and an inner circumferential surface of the first packing member 510 as shown in FIGS. 13 and 14 A first hydraulic oil inflow gap 522 is formed therebetween, and a plurality of first hydraulic fluid inflow holes 523 are formed along the circumference of the side so as to communicate with the first hydraulic fluid inflow gap 522. It flows into the first hydraulic fluid inflow interval 522 from each of the first hydraulic fluid inflow holes 523 to pressurize the first packing member 510 in the outer diameter direction to expand.

When fixing the first packing member 510 to the left and right sides of the movable vane 400 through the first packing fixing member 520, respectively, the first insertion portion 521 of the first packing fixing member 520 and the first 1 It is inserted and coupled so that the first hydraulic oil inflow gap 522 is formed between the packing members 510. To this end, although not shown in the drawing, when microprotrusions are formed on the outer peripheral surface of the first insertion portion 521 and inserted into the first packing member 510, the outer peripheral surface of the first insertion portion 521 and the first packing member 510 ) A first operating oil inflow gap 522 may be formed between the inner circumferential surfaces.

At this time, a plurality of first operation inflow holes 523 are formed through the circumference of the side surface of the first packing fixing member 520, and each of the first operation inflow holes 523 is formed with the first hydraulic inflow gap 522 and Communicate. Accordingly, as shown in FIG. 14, when hydraulic oil is supplied into the rotational flow path 140 of the cylinder 100, the hydraulic oil passes through the first hydraulic oil inflow hole 523 of the first packing fixing member 520. It is introduced into the inflow interval 522. As the hydraulic oil flows into the first hydraulic oil inflow interval 522, the pressure increases, and the first packing member 510 is pressed toward the outer diameter to expand. Through this, it is possible to further increase the adhesion effect between the inner circumferential surface of the rotation passage 140 of the cylinder 100 and the outer circumferential surface of the first packing member 510, thereby further minimizing the problem of oil leakage, and the first packing member 510 through long use. Even if abrasion occurs, it can have the same adhesion effect as in the initial installation due to the expansion effect by continuous pressure.

On the other hand, the fixed vane 300 also has the same shape as the movable vane 400, and the front and rear ends have a semicircular shape so as to be cross-sectionally shaped with the rotational passage 140 of the cylinder 100 as shown in Figs. It is formed to protrude and has a shape in which the left and right sides are connected to each other so that the semicircles face each other in a central rectangle. That is, it has the same shape as the shape of the rotation passage 140 of the cylinder 100 described above.

At this time, a pair of second packing parts 600 are also coupled to the left and right sides of the fixed vane 300, that is, the second packing part 600 is the rotation channel 140 as shown in FIGS. A pair is provided so as to be coupled to each of the left and right side surfaces of the fixed vanes 300 so as to contact the inner circumferential surface. As shown in FIG. 12, the second packing part 600 has a second packing member 610 whose outer circumferential surface is in contact with the inner circumferential surface of the rotating passage 140, and the left side of the fixed vane 300 as shown in FIG. Alternatively, a second insertion part 621 fixedly coupled to the right side with a bolt (B) and inserted into the inner circumferential surface of the second packing member 610 is formed to attach the second packing member 610 to the fixing vane 300 It includes a second packing fixing member 620 fixed to the left or right side of the.

Like the first packing member 510 described above, the second packing member 610 is a member that is in close contact with the rotation channel 140 of the cylinder 100 and is made of a strong, tough and smooth non-flammable fluororesin that has chemical resistance. A polymer polymer that maintains its physical properties in a good and wide temperature range is used. Accordingly, the outer peripheral surface of the second packing member 610 should be manufactured and installed so that it protrudes in the outer diameter direction than the outer peripheral surface of the left and right side surfaces of the fixed vane 300 or the outer peripheral surface of the second packing fixing member 620.

Through the configuration of the second packing part 600 as described above, a pair is provided on the left and right sides of the fixed vane 300, respectively, and the second packing member 610 is in close contact with the entire circumference of the rotating passage 140 to leak oil. Can be prevented. At this time, as the second packing member 610 of the second packing part 600 is also worn due to long use, a leakage problem may occur. To prevent this, the second packing member 610 It is necessary to configure it so that it can be pressed toward and expanded in the outer radial direction.

That is, the second packing fixing member 620 of the second packing part 600 is an outer circumferential surface of the second insertion part 621 and an inner circumferential surface of the second packing member 610 as shown in FIGS. 13 and 15 A second hydraulic oil inflow gap 622 is formed therebetween, and a plurality of second hydraulic fluid inflow holes 623 are formed through the side circumference so as to communicate with the second hydraulic fluid inflow gap 622. It flows into the second hydraulic fluid inflow gap 622 from each of the second hydraulic fluid inflow holes 623 to pressurize the second packing member 610 in the outer diameter direction to expand.

The configuration and function of the second packing part 600 installed in the fixed vane 300 is also the same as the first packing part 500 installed in the movable vane 400, but the difference between being fixed and moving by swinging However, there is no need to make a difference in composition in that both are identically intended to prevent leakage. In addition, as shown in Figs. 12 and 13, the shape of the fixed vane 300 and the movable vane 400 is the same, but the left and right sides of the fixed vane 300 or the movable vane 400 according to the required rotation angle It may be possible to apply different lengths.

As described above, the hydraulic oscillating actuator according to the present invention structurally solves the oil leakage problem through a completely new movable vane 400 and the first packing part 500 structure different from the conventional one, as well as the first packing member Even if abrasion of the 510 occurs, hydraulic oil flows through the first operating oil inflow hole 523 and the first operating oil inflow gap 522 of the first packing fixing member 520 to move the first packing member 510 in the outer diameter direction. By pressing and expanding it, there is an effect that can significantly improve durability by maintaining the same performance as the initial installation for a long time.

In addition, a change in the structure of the movable vane 400 and the first packing part 500 and the shape of the rotating flow path 140 inside the cylinder 100, the fixed vane 300 and the second packing part 600 Through this, as well as preventing a further reinforced leakage problem, there is an effect that can also bring improvement in performance and durability of the second packing part 600.

Embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those of ordinary skill in the technical field of the present invention can improve and change the technical idea of the present invention in various forms. Therefore, such improvements and changes will fall within the scope of the present invention as long as it is apparent to those of ordinary skill in the art.

B: bolt
100: cylinder 110: body
120: front housing 130: rear housing
140: rotating flow path
200: rotating shaft 210: expanding part
300: fixed vane
400: movable vane
500: first packing part 510: first packing member
520: first packing fixing member 521: first insertion portion
522: first hydraulic oil inflow interval 523: first hydraulic oil inflow hole
600: second packing part 610: second packing member
620: second packing fixing member 621: second insertion portion
622: second hydraulic oil inflow interval 623: second hydraulic oil inflow hole

Claims (7)

A cylinder in which the inside is hollow and the front front housing and the rear rear housing in the front are viewed symmetrically back and forth based on the central body, and are inserted in the cylinder along the longitudinal direction to be rotatably installed, A rotation shaft in which a diameter expansion part is stepped in the center so as to be located inside the body of the cylinder, a fixed vane fixedly installed so as to protrude from the inner circumferential surface of the cylinder toward the inner diameter, and the outer circumferential surface of the expanding part of the rotation shaft are combined so as to protrude toward the outer diameter And, it includes a movable vane for rotating the rotating shaft while swinging left and right based on the fixed vane according to the supply of hydraulic oil into the cylinder,
The cylinder,
A rotation channel is integrally formed in an annular shape so that the movable vane swings left and right inside the body, the front housing and the rear housing, and the rotation channel of the body has a rectangular shape in cross section, and the rotation channel of the front housing and the rear housing is Each has a semicircular shape in cross section,
The movable vane,
The front and rear ends are formed to protrude in a semicircular shape so that the rotation flow path of the cylinder and the cross-sectional shape are connected so that the left and right sides are connected to each other so that the semicircles face each other in a central rectangle,
Further comprising a pair of first packing portions respectively coupled to the left and right side surfaces of the movable vane so as to contact the inner circumferential surface of the rotation channel,
The first packing part,
A first packing member whose outer circumferential surface is in contact with the inner circumferential surface of the rotation channel in a ring shape,
A first inserting portion fixedly coupled to the left or right side of the movable vane with bolts and inserted into the inner circumferential surface of the first packing member to fix the first packing member to the left or right side of the movable vane Hydraulic oscillating actuator, characterized in that it comprises a packing fixing member.
delete delete The method of claim 1,
The first packing fixing member of the first packing part,
A first hydraulic oil inflow gap is formed between the outer circumferential surface of the first insertion part and the inner circumferential surface of the first packing member, and a plurality of first hydraulic oil inflow holes are formed through the side circumference to communicate with the first hydraulic oil inflow gap, and hydraulic oil A hydraulic oscillation type actuator, characterized in that the flow is introduced from each of the first operating oil inlet holes at the first operating oil inlet interval to press the first packing member in an outer diameter direction to expand.
The method of claim 1,
The fixed vane,
A hydraulic oscillating actuator, characterized in that the front and rear ends of the cylinder are protruded in a semicircular shape so as to form a cross-sectional shape with the rotational passage of the cylinder, and the left and right sides are connected to each other so that the semicircles face each other in a central rectangle.
The method of claim 5,
Further comprising a pair of second packing portions respectively coupled to the left and right side surfaces of the fixed vane to contact the inner circumferential surface of the rotation channel,
The second packing part,
A second packing member in which the outer circumferential surface is in contact with the inner circumferential surface of the rotation channel in a ring shape,
A second insertion part is formed to be fixedly coupled to the left or right side of the fixed vane with bolts and inserted into the inner circumferential surface of the second packing member to fix the second packing member to the left or right side of the fixed vane Hydraulic rocking actuator, characterized in that it comprises a packing fixing member.
The method of claim 6,
The second packing fixing member of the second packing part,
A second hydraulic oil inflow gap is formed between the outer circumferential surface of the second insertion part and the inner circumferential surface of the second packing member, and a plurality of second hydraulic oil inflow holes are formed through the side circumference to communicate with the second hydraulic oil inflow gap, and hydraulic oil A hydraulic oscillation type actuator, characterized in that the inflow from each of the second hydraulic oil inflow holes at the second operating inflow interval to pressurize the second packing member in an outer diameter direction to expand.

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