KR102102361B1 - Duct supporting structure - Google Patents

Abstract

The present invention relates to a duct supporting structure which is implemented to prevent movement of a duct while simply supporting the duct installed along a ceiling. The duct supporting structure comprises a duct seating part where a duct is seated; and an aerial installation part extending from the ceiling to one side and the other side of the duct seating part to allow the duct seating part to be installed in the air.

Description

Duct support structure {DUCT SUPPORTING STRUCTURE}

The present invention relates to a duct support structure, and more particularly, to a duct support structure implemented to prevent duct flow while easily supporting a duct installed along the ceiling.

In general, a building is provided with an air conditioning system for a comfortable environment for residents. The air conditioning system can be installed using a duct, and the duct can be a passage through which air or wind can move during cooling and heating.

These ducts are generally provided on the ceiling of a building, and although ducts are provided inside the ceiling, they are exposed to the outside and fixed to the ceiling. In order to prevent the duct fixed to the ceiling from hitting the lower portion of the ceiling, a duct support for supporting the duct is also provided.

The duct support is formed in various shapes depending on the shape of the duct, but supports the side and the bottom of the duct, and an area in contact with the ceiling is provided. At this time, a bolt fastening part is formed on the ceiling corresponding to an area in contact with the duct support, a duct support is provided in the duct, and a bolt is fastened to the bolt fastening part.

In order to fix the duct support in the ceiling as described above, a bolt fastening part in which bolts can be fastened is separately formed, and thus it is cumbersome to provide a duct support.

In addition, when fastening the bolt to the duct support, there is a inconvenience in that the duct support should be tilted so as not to be damaged because the duct may be damaged by the bolt.

On the other hand, the above-mentioned background technology is the technical information acquired by the inventor for the derivation of the present invention or acquired in the derivation process of the present invention, and is not necessarily a known technology disclosed to the general public before filing the present invention. .

Korean Patent Publication No. 10-2010-0106782 Korean Registered Utility Model No. 20-0399568

One side of the present invention provides a duct support structure implemented to prevent the flow of the duct while easily supporting the duct installed along the ceiling.

In addition, it provides a duct support structure implemented to stably fasten the pipe by using a duct seat formed in a square frame shape corresponding to the shape of a duct having a square pipe seated inside.

In addition, a duct support structure implemented to additionally include an elastic fastening portion inside each frame of the duct seating portion is provided.

In addition, in the case where left and right shaking of the duct occurs, a duct supporting structure is implemented so that the duct can be moved a certain distance in a direction opposite to the direction in which the duct moves through the shaking preventing unit.

In addition, a duct support structure implemented to minimize movement of the duct through attenuation of movement in the front-rear direction by using the first vibration damping unit and the second vibration damping unit in the case of shaking in the front-rear direction of the duct is provided. .

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

A duct seating portion in which a duct is seated according to an embodiment of the present invention; And it is formed extending from one side of the duct seating portion from the ceiling and the other side, the air mounting portion for installing the duct seating portion in the air.

In one embodiment, the aerial installation unit, the first support frame is formed extending from the ceiling to one side of the duct seat; And a second support frame extending from the ceiling to the other side of the duct seating portion.

In one embodiment, the duct seating portion is formed to extend in the horizontal direction to fasten the upper side of the duct, and to the upper one side and the other side of the first support frame and the second support frame to connect each lower portion so as to be rotatable Upper frame; A first side frame connected to one side of the upper frame so as to be rotatable and extending from one side of the upper frame in a vertical direction downward to fasten one side of the duct; A lower frame that is connected to one side of the first side frame so as to be rotatable, and extends in a horizontal direction from the lower side of the first side frame to fasten the lower side of the duct; And the lower side is rotatably connected to the other side of the lower frame, extending from the other side of the lower frame in an upward vertical direction, the upper side is fastened to the other side of the upper frame, and the other side of the duct is fastened. It may include; a second side frame.

In one embodiment, the duct seating portion is installed on each inner surface of the upper frame, the first side frame, the second side frame, and the lower frame facing the other frame, the duct is in close contact with each side of the duct It may further include; an elastic fastening portion consisting of a contact plate for fastening and a support spring for supporting the contact plate by using an elastic force.

In one embodiment, when the duct seating portion is shaken in the left-right direction, the anti-shaking portion for reducing the shaking of the duct by moving the duct seated in the inner space of the duct seating portion in a direction opposite to the shaking direction of the duct seating portion; It may further include.

In one embodiment, the anti-sway unit is connected to the lower portion of the upper center of the upper frame so as to be rotatable, and is installed to be inclined in the direction of the first supporting frame from the upper central portion of the upper frame so that the upper portion supports the first. It is connected to the frame so as to be rotatable, and when the duct seat is moved in one direction, the fluid compressed in the interior space compressed by the gap between the first support frame and the upper frame decreases through the first supply line. A first hydraulic tank to be supplied; It is installed on the inner side of the first side frame, the elastic fastening part is installed on the front surface, and is connected to the first hydraulic tank and the first supply line to extend in the left and right directions when fluid is supplied through the first supply line. A first cylinder that becomes and moves the elastic fastening part in the other direction; The lower portion is connected to the upper central portion of the upper frame so as to be rotatable, and is installed to be inclined in the direction of the second supporting frame from the upper central portion of the upper frame, so that the upper portion is rotatably connected to the second supporting frame. A second hydraulic tank that compresses and compresses the fluid contained in the interior space through the second supply line as the gap between the second support frame and the upper frame decreases when the duct seat moves in the other direction; And it is installed on the inner side of the second side frame, the elastic fastening portion is installed on the front, connected to the second hydraulic tank and the second supply line when the fluid is supplied through the second supply line in the left and right direction It may be extended; a second cylinder that moves the elastic fastening portion in one direction.

In one embodiment, the upper frame or the lower frame, the elastic fastening portion is installed on each inner surface of the fastening duct to the left and right movement of the duct according to the elongation of the first cylinder or the second cylinder A pair of sliding rails may be formed in the left and right directions along each inner surface so that they can move together.

In one embodiment, the elastic fastening portion installed on the upper frame or the lower frame, a seating plate for seating on the inner surface of the upper frame or the lower frame may be provided at the end of the support spring.

In one embodiment, the seating plate is inserted into the sliding rail and sliding protrusions for sliding movement may be formed along an opposite surface with the upper frame or the lower frame.

In one embodiment, the first support frame, the horizontal frame fixedly installed in the horizontal direction on the ceiling surface; A vertical frame that extends from the horizontal frame in a vertical direction downward and is connected to the duct seat so as to be rotatable on the lower side, and is connected to an upper portion to be rotatable to the lower portion of the horizontal frame; A first supporting frame supporting a front end of the vertical frame with a lower end connected to the front end of the vertical frame and an upper end connected to a front end of the horizontal frame to be rotatable; And a second support frame in which a lower portion is installed to be rotatably connected to a rear end of the vertical frame and an upper portion is connected to be rotatable to a lower end of the horizontal frame to support a rear end of the vertical frame.

In one embodiment, the aerial installation unit is installed in a space inside the front end of the horizontal frame so that the upper portion of the first support frame is rotatably installed, and when the vertical frame rotates in the shear direction, the vertical frame rotates A first vibration damping part that pulls the upper portion of the first support frame in a rear end direction so as not to; And forming a symmetrical structure with the first vibration damping unit and being installed in an inner space at the rear end of the horizontal frame so that the upper portion of the second support frame is rotatable, and when the vertical frame rotates in the rear end direction, the vertical It may further include a; a second vibration damping portion for pulling the upper portion of the second support frame in the shear direction to prevent the frame from rotating.

In one embodiment, the first vibration damping unit is connected to the sliding inner space in the front and rear direction of the horizontal frame to be slidably installed, and is connected to the upper portion of the first support frame to be rotatable at the bottom, and vertically A sliding bar in which the frame rotates in the front-rear direction and slides in the front-rear direction as the upper portion of the first support frame moves forward or backward; A hydraulic tank installed at the front end of the sliding bar to receive oil in an interior space, and the interior space compressed as the sliding bar advances to supply the received oil through a supply pipe; It is installed in the upper end of the rear end of the sliding bar to receive air in the inner space, and when oil is supplied through the supply pipe, the space in which the air is received is compressed while the oil is received into the inner space. A pneumatic tank that pushes in the rear direction; A link installed at the rear end of the piston and moving together as the piston moves in the front-rear direction; A push bar installed at a lower end of the link and moving in the front-rear direction together as the link moves in the front-rear direction; And a buffer spring installed between the front end of the push bar and the rear end of the sliding bar, and supporting an elastic force between the push bar and the sliding bar.

According to one aspect of the present invention described above, it is possible to provide an effect of preventing the flow of the duct while easily supporting the duct installed along the ceiling.

Further, the pipe is stably fastened by using a duct seat formed in a square frame shape corresponding to the shape of a square pipe-shaped duct seated inside, and further provided with an elastic fastening part inside each frame of the duct seat. It is possible to more effectively prevent the duct from being damaged by external environmental conditions by attenuating vibrations or shocks transmitted to the duct seated inside.

In addition, in the case where the left and right shaking of the duct occurs, the duct can be minimized by moving the duct in a direction opposite to the direction in which the duct moves by a certain distance to attenuate the movement to attenuate the movement.

In addition, when shaking in the front-rear direction of the duct occurs, it is possible to effectively prevent damage to the duct by minimizing the movement of the duct through attenuation of the movement in the front-rear direction by using the first vibration damping unit and the second vibration damping unit.

The effects of the present invention are not limited to the above-mentioned effects, and various effects may be included within a range obvious to those skilled in the art from the following description.

1 is a view showing a schematic configuration of a duct support structure according to an embodiment of the present invention.
2 and 3 are views showing an embodiment of the duct seating portion of FIG. 1.
4 is a view showing a schematic configuration of a duct support structure according to another embodiment of the present invention.
5 is a view showing a connection relationship between the upper frame or the lower frame and the elastic fastener.
6 is a view for explaining a method for correcting left and right shaking of a duct by a duct support structure according to another embodiment of the present invention.
7 is a view showing an embodiment of the first support frame of FIG. 1.
8 is a view showing another embodiment of the first support frame of FIG. 1.
FIG. 9 is a view showing the first vibration damping unit of FIG. 8.

For a detailed description of the present invention, which will be described later, reference is made to the accompanying drawings that illustrate, by way of example, specific embodiments in which the present invention may be practiced. These examples are described in detail enough to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain shapes, structures, and properties described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. In addition, it should be understood that the location or placement of individual components within each disclosed embodiment can be changed without departing from the spirit and scope of the invention. Therefore, the following detailed description is not intended to be taken in a limiting sense, and the scope of the present invention, if appropriately described, is limited only by the appended claims, along with all ranges equivalent to those claimed. In the drawings, similar reference numerals refer to the same or similar functions across various aspects.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

1 is a view showing a schematic configuration of a duct support structure according to an embodiment of the present invention.

Referring to FIG. 1, the duct support structure 10 according to an embodiment of the present invention includes a duct seating portion 100 and an aerial installation portion 200.

The duct seating portion 100, the duct (D) is seated, is installed spaced apart from the floor surface along the ceiling by the air mounting portion 200.

The aerial installation unit 200 is formed to extend from the ceiling to one side and the other side of the duct seat 100 to install the duct seat 100 in the air.

In one embodiment, the aerial installation unit 200 includes a first support frame 200a and a second support frame 220b.

The first support frame 200a extends from the ceiling to one side of the duct seat 100 to support one side of the aerial installation 200.

The second support frame 220b is formed from the ceiling to another extension of the duct seat 100 to support the other side of the aerial installation 200.

The duct support structure 10 according to an embodiment of the present invention having the configuration as described above may provide an effect of preventing the flow of the duct while easily supporting the duct (D) installed along the ceiling.

2 and 3 are views showing an embodiment of the duct seating portion of FIG. 1.

2 and 3, the duct seat 100 according to an embodiment is formed in a square frame shape for stably fastening a slope of a duct D formed in a square pipe shape, and an upper frame 110, the first side frame 120, the lower frame 130 and the second side frame 140.

The upper frame 110 is formed to extend in the horizontal direction to fasten the upper side of the duct D, and each lower portion of the first support frame 200a and the second support frame 220b is rotated on one side and the other side of the upper portion. It is installed so that it can be connected.

The first side frame 120 is connected to one side of the upper frame 110 so that the upper part is rotatable, and extends downward from one side of the upper frame 110 in a vertical direction to fasten one side surface of the duct D. do.

The lower frame 130 is connected to one side so as to be rotatable on the lower side of the first side frame 120, and is formed to extend in a horizontal direction from the lower side of the first side frame 120 to open the lower side of the duct D. To conclude.

The second side frame 140 is connected to the other side of the lower frame 130 so that the lower side is rotatable, and is formed to extend upward from the other side of the lower frame 130 in the vertical direction, so that the upper side is the upper frame 110 Fastened to the other side of the, and fasten the other side of the duct (D).

The duct seating portion 100 having the configuration as described above may further include an elastic fastening portion 150.

The elastic fastening portions 150a, 150b, 150c, and 150d are each inner surfaces of the upper frame 110, the first side frame 120, the second side frame 140, and the lower frame 130 facing the other frames. It is installed on, it is in close contact with each side of the duct (D) is made of a contact plate 151 for fastening the duct (D) and a support spring (152) for supporting the contact plate 151 by using an elastic force.

The duct seating portion 100 according to an embodiment having the configuration as described above is formed in a square frame shape corresponding to the shape of a duct D of a square pipe seated inside, so that the pipe can be stably fastened. In addition, by providing additional elastic fasteners 150a, 150b, 150c, and 150d on the inside of each frame, the vibration or shock transmitted to the duct D seated inside is attenuated, so that the duct D is external. It is possible to more effectively prevent damage due to environmental conditions.

4 is a view showing a schematic configuration of a duct support structure according to another embodiment of the present invention.

Referring to FIG. 4, the duct support structure 20 according to another embodiment of the present invention includes a duct seating portion 100, an aerial installation portion 200, and a shake prevention portion 300. Here, since the duct seating portion 100 and the aerial installation portion 200 are the same as the components of FIG. 1, description thereof will be omitted.

When the duct seating part 100 is shaken in the left-right direction, the anti-shake part 300 moves the duct D seated in the inner space of the duct seating part 100 in the opposite direction to the shaking direction of the duct seating part 100. It moves to reduce the shaking of the duct (D).

In one embodiment, the shake prevention unit 300 may include a first hydraulic tank 310, a first cylinder 320, a second hydraulic tank 330 and a second cylinder 340.

The first hydraulic tank 310 is connected to the lower portion of the upper center of the upper frame 110 to be rotatable, and is installed to be inclined in the direction of the first supporting frame 200a from the upper central portion of the upper frame 110. Is installed to be rotatably connected to the first support frame (200a), when the duct seat 100 moves in one direction, the gap between the first support frame (200a) and the upper frame (110) is reduced (Fig. 6) (a)), the fluid compressed and accommodated in the interior space is supplied through the first supply line L1.

The first cylinder 320 is installed on the inner surface of the first side frame 120, an elastic fastening portion 150 is installed on the front, and the first hydraulic tank 310 and the first supply line (L1) When the fluid is supplied through the first supply line L1 by being connected, the piston 321 installed inside is extended in the left and right directions to move the elastic fastening part 150b in the other direction.

The second hydraulic tank 330 is connected to the lower portion in the upper central portion of the upper frame 110 to be rotatable, and is installed to be inclined in the direction of the second supporting frame 220b from the upper central portion of the upper frame 110. Is installed to be rotatably connected to the second support frame (220b), the space between the second support frame (220b) and the upper frame 110 is reduced when the duct seat 100 moves in the other direction (Fig. 6) (B)), the fluid compressed and accommodated in the internal space is supplied through the second supply line L2.

The second cylinder 340 is installed on the inner surface of the second side frame 140, an elastic fastening portion 150 is installed on the front, and the second hydraulic tank 330 and the second supply line (L2) When the fluid is supplied through the second supply line L2 by being connected, the piston 321 installed inside is extended in the left-right direction to move the elastic fastening part 150d in one direction.

In one embodiment, the upper frame 110 or the lower frame 130 is installed on each inner surface thereof, the elastic fastening unit 150 that fastens the duct D is the first cylinder 320 or the second A pair of sliding rails R may be formed in the left and right directions along each inner surface so that they can move together according to the movement in the left and right directions of the duct D according to the extension of the cylinder 340.

In this case, referring to FIG. 5, the elastic fastening parts 150a and 150c installed on the upper frame 110 or the lower frame 130 are provided to be seated on the inner surface of the upper frame 110 or the lower frame 130. A seating plate 153 may be provided at the end of the support spring 152.

In addition, the seating plate 153 may be inserted into the sliding rail R, and a sliding protrusion 154 for sliding movement may be formed along an opposite surface with the upper frame 110 or the lower frame 130.

The duct support structure 20 according to another embodiment of the present invention having the configuration as described above, the duct (D) is moved through the shake prevention unit 300 when the left and right shaking of the duct (D) occurs It is possible to minimize the shaking of the duct D by moving the duct D in a direction opposite to the direction to attenuate the movement.

7 is a view showing an embodiment of the first support frame of FIG. 1.

Referring to FIG. 7, the first support frame 200a according to an embodiment includes a horizontal frame 210, a vertical frame 220, a first support frame 230, and a second support frame 240. .

At this time, the second support frame 200b, which is installed to face the first support frame 200a and is made of the same components, will be omitted to avoid overlapping description.

The horizontal frame 210 is fixedly installed in the horizontal direction on the ceiling surface, and is connected to the lower part H3 so that the upper part of the vertical frame 220 is rotatable.

The vertical frame 220 is formed to extend downward from the horizontal frame 210 in the vertical direction so that the duct seat 100 is rotatably installed on the lower side, and the upper portion is rotated to the lower portion H3 of the horizontal frame 210. It is installed so as to be possible, and the front end and the rear end are respectively supported by the first support frame 230 and the second support frame 240.

The first support frame 230 is installed so that the lower portion is rotatably connected to the front end of the vertical frame 220 and the upper portion is connected to be rotatable to the lower end of the horizontal frame 210 to be connected to the front end of the vertical frame 220. Support.

The second support frame 240 is connected to the lower end of the vertical frame 220 so as to be rotatable, and the upper end of the horizontal frame 210 to be rotatable to the lower end of the vertical frame 220 is installed. Support.

8 is a view showing another embodiment of the aerial installation of FIG. 1.

Referring to FIG. 8, the aerial installation unit 200a according to another embodiment includes a horizontal frame 210, a vertical frame 220, a first support frame 230, a second support frame 240, and a first vibration And an attenuation unit 250 and a second vibration attenuation unit 260.

Here, since the horizontal frame 210, the vertical frame 220, the first support frame 230, and the second support frame 240 are the same as the components of FIG. 7, the description thereof will be omitted.

The first vibration damping unit 250 is installed in the inner space at the front end of the horizontal frame 210 to be connected to the upper portion of the first support frame 230 so as to be rotatable, and the vertical frame 220 to rotate in the shear direction In this case, the upper portion of the first support frame 230 is pulled toward the rear end so that the vertical frame 220 does not rotate.

The second vibration damping unit 260 is formed in a symmetrical structure with the first vibration damping unit 250 and is installed in a space inside the rear end of the horizontal frame 210 to connect the upper portion of the second support frame 240 to be rotated. It is installed, and when the vertical frame 220 rotates in the rear end direction, the upper portion of the second support frame 240 is pulled in the shear direction to prevent the vertical frame 220 from rotating.

Aerial installation unit 200a according to another embodiment having the above-described configuration, the first vibration damping unit 250 and the second vibration damping unit 260 when shaking in the front-rear direction of the duct D occurs ) To minimize the movement of the duct D through attenuation of the movement in the front-rear direction to effectively prevent the damage of the duct D.

FIG. 9 is a view showing the first vibration damping unit of FIG. 8.

Referring to FIG. 9, the first vibration damping unit 250 includes a sliding bar 251, a hydraulic tank 252, a pneumatic tank 253, a link 255, a push bar 256 and a buffer spring 257 It includes.

The sliding bar 251 is installed to be slidably moved in the front-rear direction in a space inside the front end of the horizontal frame 210, and is connected to the lower part H2 so that the upper part of the first support frame 230 is rotatable, The vertical frame 220 is rotated in the front-rear direction, the upper portion of the first support frame 230 slides in the front-rear direction as it moves forward or backward, and the first support 2511 for supporting the hydraulic tank 252 at the front end. And a second support 2512 for supporting the buffer spring 257 at the rear end.

As the hydraulic tank 252 is installed at the front end of the sliding bar 251, oil is accommodated in the interior space, and as the sliding bar 251 advances, the piston 2521 installed at the rear end compresses the interior space. The internal space is compressed and is supplied to the pneumatic tank 253 through the supply pipe 2522.

The pneumatic tank 253 is installed in the upper rear end of the sliding bar 251 to receive air in the interior space, and when oil is supplied through the supply pipe 2522, the space is accommodated while the oil is received into the interior space. Compressed and connected to the rear end, the piston 254 is pushed in the rear end direction using air pressure.

The link 255 is installed at the rear end of the piston 254 and moves together as the piston 254 moves in the front-rear direction while moving the push bar 256 installed at the bottom of the front end.

The push bar 256 is installed at a lower end of the front end of the link 255 to expand or contract the shock absorbing spring 257 while moving in the front and rear directions together as the link 255 moves in the front-rear direction.

The buffer spring 257 is installed between the front end of the push bar 256 and the rear end of the sliding bar 251, and supports between the push bar 256 and the sliding bar 251 by using an elastic force.

The above-described embodiments are for illustration only, and those skilled in the art to which the above-described embodiments belong can easily be modified into other specific forms without changing the technical idea or essential characteristics of the above-described embodiments. You will understand. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope to be protected through the present specification is indicated by the claims, which will be described later, rather than the detailed description, and should be interpreted to include all modified or modified forms derived from the meaning and scope of the claims and the equivalent concept. .

10: duct support structure
100: duct seat
200: aerial installation
300: shake prevention unit

Claims (2)

A duct seating portion on which the duct is seated; And
Includes; it is formed extending from the ceiling to one side of the duct seating portion and the other side to install the duct seating portion in the air; includes,
The aerial installation unit, a first support frame extending from the ceiling to one side of the duct seat; And a second support frame extending from the ceiling to the other side of the duct seat;
The duct seating portion is formed to extend in the horizontal direction to fasten the upper surface of the duct, and the upper frame is installed to be connected to each lower portion of the first support frame and the second support frame on the upper side and the other side; A first side frame connected to one side of the upper frame so as to be rotatable and extending in a vertical direction from one side of the upper frame to fasten one side of the duct; A lower frame connected to one side of the first side frame so as to be rotatable, and extending in a horizontal direction from the lower side of the first side frame to fasten the lower side of the duct; And the lower side is rotatably connected to the other side of the lower frame, extending from the other side of the lower frame in the upper vertical direction so that the upper side is fastened to the other side of the upper frame, and the other side of the duct is fastened. It includes a second side frame;
The duct seating portion is installed on each inner surface of the upper frame, the first side frame, the second side frame, and the lower frame facing the other frame, and is in close contact with each side of the duct to fasten the duct. It further comprises an elastic fastening portion consisting of a support spring for supporting the plate and the contact plate using an elastic force;
When the duct seating portion is shaken in the left-right direction, the anti-shake portion for reducing the shaking of the duct by moving the duct seated in the inner space of the duct seating portion in a direction opposite to the shaking direction of the duct seating portion;
The anti-sway part is connected to the upper center of the upper frame so as to be rotatable, and is installed to be inclined in the direction of the first support frame from the upper center of the upper frame so that the upper part is rotatable to the first support frame. When installed, the duct seating unit moves in one direction, and the first hydraulic pressure is supplied through the first supply line to compress the fluid contained in the interior space as the gap between the first support frame and the upper frame decreases. Tank; It is installed on the inner side of the first side frame, the elastic fastening part is installed on the front side, connected to the first hydraulic tank and the first supply line, and when fluid is supplied through the first supply line, it extends in the left and right directions A first cylinder that becomes and moves the elastic fastening part in the other direction; The lower portion is connected to the upper central portion of the upper frame so as to be rotatable, and is installed to be inclined in the direction of the second supporting frame from the upper central portion of the upper frame, so that the upper portion is rotatably connected to the second supporting frame. A second hydraulic tank that compresses and compresses the fluid contained in the interior space through the second supply line as the gap between the second support frame and the upper frame decreases when the duct seat moves in the other direction; And it is installed on the inner side of the second side frame, the elastic fastening portion is installed on the front, is connected to the second hydraulic tank and the second supply line when the fluid is supplied through the second supply line in the left and right direction It includes a second cylinder that extends and moves the elastic fastening portion in one direction;
The upper frame or the lower frame is installed on each inner surface thereof, so that the elastic fastening part that fastens the duct can move together according to the movement of the duct along the elongation of the first cylinder or the second cylinder. A pair of sliding rails are formed in the left and right directions along each inner surface,
The elastic fastening part installed in the upper frame or the lower frame, a seating plate for seating on the inner surface of the upper frame or the lower frame is provided at the end of the support spring,
The seating plate is inserted into the sliding rail, the sliding projection for sliding movement is formed along the opposite surface with the upper frame or the lower frame, the duct support structure. delete

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