KR20140042506A - Frame assembly - Google Patents

Abstract

The present invention relates to a frame assembly, and provides a frame assembly which is obtained by convenient and prompt installation work based on a number of strait pipes and joint units combining the same; whose shapes such as size, height, and width can be variously adjusted, thereby being applicable in various facilities; and which has a safe structure against an external load such as snow, rainwater, etc.

Description

[0001] Frame Assembly [0002]

The present invention relates to a frame assembly. In more detail, the installation work can be carried out conveniently and quickly through a plurality of straight pipes and a joint unit for joining them, and various shapes such as size, height and width can be adjusted through the joining structure of the straight pipe and the joint unit The present invention relates to a frame assembly that can be applied to a wider range of facilities and has a structure that is more secure against external loads such as snow and rainwater.

In general, vinyl houses have been widely used to grow and supply fresh seasonal crops without seasonal restrictions.

These vinyl houses usually have a skeleton formed by bending or folding a steel pipe in an arcuate shape on the ground on which the vinyl house is to be installed, at regular intervals, covering the vinyl paper on the installed skeleton, and a wire, high tensile strength synthetic resin, It is a structure that is installed not to be caught in a strong wind around a thing like a rope, it keeps the inside of the house always at an appropriate temperature, and it is possible to cultivate specific crop in winter.

The vinyl house having such characteristics is vulnerable to an external force such as typhoon, heavy snow, and heavy rain due to its structure, and its shape is deformed or damaged in a severe case, thereby causing damage to crops frequently. Particularly, since the conventional vinyl house according to the prior art has a frame structure in the shape of an arched bent, its structure is more concentrated on the ceiling of the snow or rain plastic house, and accordingly, There is a problem that the breakage is further intensified.

In addition, since a conventional vinyl house according to the related art has a structure in which a frame is manufactured by bending an iron pipe into an arcuate shape and its size and shape are fixed on the basis of such a frame, There is a problem that the frame is also difficult to be reused in other vinyl houses and the inner height is also difficult to control, so that when the vinyl house is installed in a narrow area, the inside height is low and the operation inside the vinyl house is very inconvenient.

In addition to these vinyl houses, tents are installed at various venues to block snow, rain or the sun. In case of installing such tents, the frame is generally installed, The installation operation is performed. The frames used at this time also have problems such as difficulty in setting, difficulty in adjusting the shape, and inability to be recycled, as in a vinyl house frame.

A prior art is Korean Patent No. 10-588983.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior arts, and it is an object of the present invention to provide a joint pipe connecting a straight pipe and a joint unit The present invention is to provide a frame assembly having various structures such as size, height and width, which can be applied to various facilities, and has a structure that is more secure against external loads such as snow and rainwater.

The present invention relates to a frame assembly comprising a horizontal pipe and a first joint unit for simultaneously joining at least one support pipe arranged at right angles to the horizontal pipe, A horizontal coupling pipe coupled to the one end; At least one support coupling pipe coupled to one end of the support pipe and sequentially coupled to one end of the horizontal coupling pipe so as to be disposed in a direction perpendicular to the horizontal coupling pipe; And a connection block in which both ends are inserted into the horizontal coupling pipe and the horizontal pipe or both ends thereof are inserted into the supporting pipe and the supporting pipe, respectively, and the horizontal coupling pipe and the supporting coupling pipe are connected by the connecting block Each of which engages with the horizontal pipe and the support pipe.

At this time, the support coupling pipe may have a plate-like protruding coupling part at one end, and may be sequentially coupled to one end of the horizontal coupling pipe through the protruding coupling part.

The plurality of support coupling pipes are coupled to the horizontal coupling pipe through separate fastening bolts passing through one end of the horizontal coupling pipe in the longitudinal direction of the horizontal coupling pipe, The placement angle can be adjusted.

Further, a separate rotation stopper rod may be detachably coupled to the plurality of support coupling pipes so that a relative rotation angle with respect to each other may be constrained.

The connection blocks are formed in a cylindrical shape so that both ends of the connection blocks are inserted into the horizontal coupling pipe and the horizontal pipe respectively or inserted into the support coupling pipe and the support pipe respectively, An upper body and a lower body symmetrically separated from each other; And a first gap adjusting bolt threaded through the upper body or the lower body in a radial direction so as to adjust an interval between the upper body and the lower body, wherein the first gap adjusting bolt is drawn in a center direction The upper body and the lower body are pressed by the first gap adjusting bolts and moved in directions away from each other so that the outer peripheral surfaces of the upper and lower ends of the upper body and the lower body are connected to the horizontal pipe, And can be tightly coupled to the inner circumferential surface.

The first gap adjusting bolts may be coupled to the upper body and the lower body, respectively.

In addition, a non-slip member may be mounted on the outer circumferential surfaces of both ends of the connection block to improve a close contact force with the inner circumferential surface of the horizontal pipe, the horizontal coupling pipe, the support pipe or the support coupling pipe.

In addition, the second joint unit may further include a second support pipe which is coupled to the intermediate portion of the first support pipe at a right angle.

The second joint unit may be symmetrically formed to be rotatable about a hinge shaft formed at one end, and may be rotatably coupled around the hinge shaft to surround the outer circumferential surface of the first support pipe. A first hinge body and a second hinge body formed in a cylindrical shape so that the other end can be inserted into the second support pipe in a pivotally coupled state; The first hinge body and the second hinge body are pivotally coupled to each other so as to surround the first support pipe. The first hinge body and the second hinge body are rotatably coupled to each other so as to surround the first support pipe. And a second gap adjusting bolt threaded through the other end of the second hinge body, wherein as the second gap adjusting bolt is drawn in the center direction, the first hinge body or the second hinge body adjusts the second gap The outer peripheral surface of the other end of the first hinge body and the second hinge body can be tightly coupled to the inner peripheral surface of the second support pipe by moving in the direction in which the first hinge body and the second hinge body are pressed by the bolts and moved away from each other.

In addition, a non-slip member may be mounted on the outer peripheral surface of the other end of the first hinge body and the second hinge body so as to improve a close contact force with the inner peripheral surface of the second support pipe.

The first hinge body and the second hinge body may be coupled to one side of the first hinge body and the second hinge body so that the first hinge body and the second hinge body can be engaged with the first support pipe while being pivotally coupled to surround the first support pipe. A fixing bolt for pressing the first support pipe can be fastened.

According to the present invention, since the frame structure is formed through a plurality of linear pipes and a joint unit for joining them, the bending operation of the pipe is unnecessary, so that the assembling work is facilitated and the installation work can be performed more quickly and conveniently have.

In addition, the shape such as the size, height, and width of the frame structure can be variously adjusted through the coupling structure of the straight pipe and the joint unit, so that it can be transformed into various shapes according to the installation purpose or environment of the frame assembly, The pipe can be recycled even when the other frame assembly is installed.

In addition, it is possible to provide a roof-and-roof structure that prevents snow or rainwater from being accumulated on the roof through the joint structure of the straight pipe and the joint unit, and thereby it is possible to maintain a more structurally safe state such as heavy snowfall or heavy rain .

FIG. 1 is a perspective view schematically showing a whole installation structure of a frame assembly according to an embodiment of the present invention, FIG.
FIG. 2 is a view schematically showing a state of change of a shape of a frame assembly according to an embodiment of the present invention; FIG.
Figure 3 schematically illustrates various reinforcing structural features of a frame assembly according to an embodiment of the present invention;
Figure 4 illustrates an exemplary installation of first and second joint units of a frame assembly according to an embodiment of the present invention,
5 is an exploded perspective view schematically showing a configuration of a first joint unit of a frame assembly according to an embodiment of the present invention,
6 is a schematic view illustrating a coupling structure for a first joint unit of a frame assembly according to an embodiment of the present invention;
Figure 7 schematically illustrates an operating structure for a second joint unit of a frame assembly according to an embodiment of the present invention;
8 is a schematic view illustrating a coupling structure for a second joint unit of a frame assembly according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a perspective view schematically showing an entire installation structure of a frame assembly according to an embodiment of the present invention, FIG. 2 is a view schematically showing a state of a shape change of a frame assembly according to an embodiment of the present invention, FIG. 3 is a schematic illustration of various types of reinforcing structures of a frame assembly according to an embodiment of the present invention, FIG. 4 is a perspective view of a frame assembly according to an embodiment of the present invention, FIG. 5 is an exploded perspective view schematically illustrating a configuration of a first joint unit of a frame assembly according to an embodiment of the present invention, and FIG. 6 is a perspective view of an embodiment of the present invention Fig. 2 is a schematic view showing a coupling structure for a first joint unit of a frame assembly according to the present invention;

The frame assembly 10 according to an embodiment of the present invention can be utilized as a frame structure for various kinds of facilities such as a vinyl house or a tent, and can be used as a frame structure through a plurality of pipes and a plurality of joint units And the shape and size thereof can be easily changed.

This frame assembly 10 comprises a first joint unit 300 which comprises a horizontal pipe 100 and a horizontal pipe 100 as shown in Figure 1, And at least one support pipe 210, 220, 230 arranged at right angles.

Accordingly, the frame assembly 10 according to the embodiment of the present invention can be manufactured by assembling a simple linear pipe into the first joint unit 300 through the first joint unit 300 without the need to bend the pipe into an arcuate shape as shown in FIGS. Shape, and shape, and can be configured to have various shapes and sizes. In particular, by simply changing the length of the pipe, the shape, height, and width of the frame assembly 10 can be easily changed and adjusted.

For example, as shown in Figs. 1 to 3, the roof structure can be configured as a façade roof. A vertical support pipe 210 vertically disposed from the ground surface; an inclined support pipe 220 upwardly inclined at an upper end of the vertical support pipe 210; and a vertical support pipe 210 and an inclined support pipe 220, And the horizontal pipe 100 at right angles with the first joint unit 300 through the first joint unit 300 at the same time. At this time, the cross support pipe 230 may be further coupled to the first joint unit 300 so as to connect and support the paired vertical support pipes 210 to each other. That is, one horizontal pipe 100 and three support pipes 210, 220 and 230 can be coupled to the first joint unit 300 at the same time.

2 (a) and 2 (b), the inner width of the frame assembly 10 can be adjusted by applying the slant support pipe 220 of a different length, and the inner height .

Also, as shown in FIGS. 3A to 3C, various types of reinforcing support pipes 230 and 240 can be coupled, and the plurality of support pipes 210, 220 and 230 can be coupled by the first joint unit 300 Can be coupled to the horizontal pipe 100 at the same time. 3 (c), a separate vertical support pipe 240 may be coupled from the end of the inclined support pipe 220 to the end of the cross support pipe 230, The intermediate portion of the cross support pipe 230 and the lower end of the vertical support pipe 240 may be coupled to each other by a separate second joint unit 400.

Accordingly, the frame assembly 10 according to an embodiment of the present invention includes a plurality of such pipes in a straight line shape, a first joint unit 300 and a second joint unit 300, The assembling and mounting work can be performed very easily through the heat exchanger 400, and various shape changes can be easily performed.

First, the configuration of the first joint unit 300 will be described in more detail with reference to FIGS. 4 to 6. FIG.

The first joint unit 300 includes a horizontal coupling pipe 310 coupled to one end of the horizontal pipe 100 and a second coupling unit 310 coupled to one end of the support pipes 210, One or more support coupling pipes 320 sequentially coupled to one end of the horizontal coupling pipe 310 and a plurality of support coupling pipes 320 having both ends inserted into the horizontal coupling pipe 310 and the horizontal pipe 100, 320 and the supporting pipes 210, 220 and 230. The horizontal coupling pipe 310 and the supporting coupling pipe 320 are connected to the horizontal pipe 100 And support pipes 210, 220, and 230, respectively.

At this time, the support coupling pipe 320 is formed at one end thereof with a plate-like protrusion coupling portion 321, and is sequentially coupled to one end of the horizontal coupling pipe 310 through the protrusion coupling portion 321.

4, the plurality of support coupling pipes 320 are connected to each other through a separate fastening bolt T passing through one end of the horizontal coupling pipe 310 in the longitudinal direction of the horizontal coupling pipe 310, And is coupled to the pipe 310. Therefore, the respective supporting and connecting pipes 320 can be adjusted in the manner of rotating with the fastening bolt T as a center axis.

That is, when the fastening bolt T is fastened together with the nut (not shown), the horizontal coupling pipe 310 and the support coupling pipe 320 are coupled in a state of being fixed by the tightening force of the fastening bolt, The support coupling pipe 320 can rotate about the fastening bolt T and can adjust the angle of its arrangement in this way. For example, in order to adjust the inclination angle of the inclined support pipe 220, the inclination angle of the inclined support pipe 220 can be adjusted by adjusting the angle of the support support pipe 320.

Meanwhile, the horizontal coupling pipe 310 and the support coupling pipe 320 are fixed in position by the fastening force of the fastening bolts T as described above. In addition, A separate rotation stopper rod 330 may be further provided.

The rotation stopper rod 330 is formed in a substantially C shape and is mounted in such a manner that it is inserted into a rod coupling hole 323 formed in a projecting coupling portion 321 of each support coupling pipe 320, Since the two support coupling pipes 320 inserted with the rotation stopper rod 330 are constrained relative to each other, the frame structure for each of the support pipes 210, 220, and 230 can be more stably maintained.

The horizontal coupling pipe 310 and the supporting coupling pipe 320 are coupled to the horizontal pipe 100 and the support pipes 210 and 220 and 230 through the connection block 350, And a first gap adjusting bolt 355 for adjusting the gap between the upper body 351 and the lower body 352 and the upper body 351 and the lower body 352.

The upper body 351 and the lower body 352 may be symmetrically separated from each other and formed into a single cylindrical shape in a state where they are coupled to each other. The upper body 351 and the lower body 352 are inserted into the horizontal coupling pipe 310 and the horizontal pipe 100 or the supporting pipe 210 and the supporting pipes 210, Respectively.

The first gap adjusting bolt 355 is configured to penetrate the upper body 351 or the lower body 352 in a radial direction and to be screwed to the upper body 351 or the lower body 352. The first gap adjusting bolt 355 may be coupled to either the upper body 351 or the lower body 352 And may be coupled to both the upper body 351 and the lower body 352 as shown in FIGS. In this case, a tab hole 354 is formed in the upper body 351 and the lower body 352 so that the first gap adjusting bolt 355 is screwed.

According to this structure, when the first gap adjusting bolt 355 is rotated and drawn into the cylindrical center portion of the upper body 351 and the lower body 352, the upper body 351 or the lower body 352 can be adjusted The outer peripheral surfaces of both ends of the upper body 351 and the lower body 352 are respectively connected to the horizontal pipe 100, the horizontal coupling pipe 310, the support pipe 210, 220, 230) or the inner circumferential surface of the support coupling pipe 320.

For example, as shown in FIG. 6 (a), the horizontal pipe 310 and the horizontal pipe 100 are coupled by the connection block 350. The upper body 351 and the lower body 352 are in close contact with each other, both ends are inserted into the horizontal coupling pipe 310 and the horizontal pipe 100, respectively. 6 (b), when the first gap adjusting bolt 355 on the left side is rotated, the first gap adjusting bolt 355 is drawn toward the center, so that the lower body 352 So that the distance between the upper body 351 and the lower body 352 in the left portion is increased. 6 (c), when the first gap adjusting bolt 355 on the right side is rotated, the first gap adjusting bolt 355 is drawn toward the center, so that the upper body 351 So that the distance between the upper body 351 and the lower body 352 at the right side is increased. When the distance between the upper body 351 and the lower body 352 is increased, the outer peripheral surfaces of both ends of the upper body 351 and the lower body 352 are separated from the inner peripheral surface of the horizontal coupling pipe 310 and the inner peripheral surface of the horizontal pipe 352, The horizontal coupling pipe 310 and the horizontal pipe 100 are coupled and fixed to each other via the connection block 350 in this state.

Although not shown, the supporting coupling pipe 320 and the supporting pipes 210, 220 and 230 are fixed to each other via the connecting block 350 in the same manner.

At this time, on the outer circumferential surfaces of both ends of the connection block 350, a separate non-slidable member (not shown) is provided on the inner peripheral surface of the horizontal pipe 100, the horizontal coupling pipe 310, the support pipes 210, 220, (353) can be mounted.

FIG. 7 is a schematic view illustrating an operation structure for a second joint unit of a frame assembly according to an embodiment of the present invention, and FIG. 8 is a schematic view of a second joint unit of a frame assembly according to an embodiment of the present invention. 1 schematically shows a coupling structure.

The frame assembly according to an embodiment of the present invention may further include a second joint unit 400 in addition to the first joint unit 300 as described above.

The second joint unit 400 is configured to couple the two support pipes to each other. The second joint pipe 400 is configured such that a separate second support pipe 240 can be coupled to the intermediate portion of the first support pipe 230 in a perpendicular direction . For example, when the vertical support pipe 240 is coupled to the intermediate portion of the cross support pipe 230 as shown in FIG. 4, the second joint unit 400 may be used.

The second joint unit 400 includes a first hinge body 410 and a second hinge body 420 that are symmetrically separated from each other so as to be rotatable about a hinge shaft 401 formed at one end, And a second gap adjusting bolt (450) for adjusting the gap between the hinge body (410) and the second hinge body (420).

The first hinge body 410 and the second hinge body 420 are symmetrically separated from each other so as to be rotatable about the hinge shaft 401. The first and second support pipes 230, A pipe accommodating portion 402 is formed. The first hinge body 410 and the second hinge body 420 pivot about the hinge shaft 401 to enclose the outer circumferential surface of the first support pipe 230 through the pipe receiving portion 402. 7 (b), the other end of the first support pipe 230 is inserted into the second support pipe 240 in a cylindrical shape so as to be inserted into the second support pipe 240 .

The second gap adjusting bolt 450 is rotatably coupled to the first hinge body 410 and the second hinge body 420 in a state where the first hinge body 410 and the second hinge body 420 are pivotally coupled to surround the first support pipe 230, The first hinge body 410 or the second hinge body 420 is threadedly connected to the other end of the first hinge body 410 or the second hinge body 420 so as to adjust the distance between the other ends of the body 420. [

The first and second hinge bodies 410 and 420 are pressed by the second gap adjusting bolt 450 to be engaged with each other by rotating the second gap adjusting bolt 450 in the center direction, The outer circumferential surface of the other end of the first hinge body 410 and the second hinge body 420 is tightly coupled to the inner circumferential surface of the second support pipe 240.

That is, as shown in FIG. 8A, the first hinge body 410 and the second hinge body 420 surround the first support pipe 230 and are pivotally coupled to the first hinge body 410 and the second hinge body 420, The other end of the second hinge body 420 is inserted into the second support pipe 240. 8 (b), when the second gap adjusting bolt 450 is rotated and drawn into the center side, the second hinge body 420 is pressed and moved in the direction of moving away from each other, The outer circumferential surface of the other end of the first hinge body 410 and the second hinge body 420 is in intimate contact with the inner circumferential surface of the second support pipe 240. In this state, the second support pipe 240 is coupled and fixed to the intermediate portion of the first support pipe 230 through the second joint unit 400.

The first hinge body 410 and the second hinge body 420 are rotatably coupled to one side of the first hinge body 410 and the second hinge body 420 so as to surround the first support pipe 230 It is preferable that a fixing bolt 460 for pressing the first support pipe 230 is fastened so that the first support pipe 230 can be engaged with and fixed to the first support pipe 230.

The first hinge body 410 and the second hinge body 420 are fastened to each other by the fastening force of the fastening bolt 460 by fastening the fastening bolt 460 as shown in Figure 8 (c) And is fixed in position by being coupled with the pipe 230. That is, the movement of the first hinge body 410 and the second hinge body 420 in the longitudinal direction of the first support pipe 230 is restricted by the fixing bolts 460.

On the other hand, a separate anti-slip member 430 is mounted on the outer circumferential surface of the other end of the first hinge body 410 and the second hinge body 420 to improve the contact contact force with the inner circumferential surface of the second support pipe 240 desirable.

The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas falling within the scope of the same shall be construed as falling within the scope of the present invention.

10: frame assembly 100: horizontal pipe
210, 220, 230, 240:
300: first joint unit 310: horizontal coupling pipe
320: Supporting coupling pipe 330: Rotary stopper rod
350: connection block 351: upper body
352: lower body 355: first spacing bolt
400: second joint unit 410: first hinge body
420: second hinge body 450: second interval adjusting bolt

Claims (11)

A frame assembly comprising a horizontal pipe and a first joint unit for simultaneously coupling at least one support pipe arranged at right angles to the horizontal pipe,
The first joint unit
A horizontal coupling pipe coupled to one end of the horizontal pipe;
At least one support coupling pipe coupled to one end of the support pipe and sequentially coupled to one end of the horizontal coupling pipe so as to be disposed in a direction perpendicular to the horizontal coupling pipe; And
A connecting block having both ends inserted and coupled to the horizontal coupling pipe and the horizontal pipe, respectively, or both ends inserted and coupled to the support coupling pipe and the support pipe, respectively.
And the horizontal coupling pipe and the support coupling pipe are coupled with the horizontal pipe and the support pipe, respectively, by the connecting block.
The method according to claim 1,
The support coupling pipe is frame assembly, characterized in that the one end is formed with a plate-like protrusion coupling is sequentially coupled to one end of the horizontal coupling pipe through the protrusion coupling.
3. The method of claim 2,
The plurality of support coupling pipes are coupled to the horizontal coupling pipes through separate fastening bolts penetrating one end of the horizontal coupling pipes in the longitudinal direction of the horizontal coupling pipes, and rotate in a central axis. Frame assembly, characterized in that the positioning angle is adjustable.
The method of claim 3, wherein
Wherein a separate rotation stopper rod is detachably coupled to the plurality of support coupling pipes so that a relative rotation angle with respect to each other can be constrained.
5. The method according to any one of claims 1 to 4,
The connecting block
And the two ends are connected to the horizontal coupling pipe and the horizontal pipe respectively or inserted into the support coupling pipe and the support pipe respectively and are formed symmetrically with respect to the diameter of the cylindrical shape An upper body and a lower body; And
A first gap adjusting bolt that is threaded through the upper body or the lower body in a radial direction so as to adjust an interval between the upper body and the lower body,
Wherein the upper and lower bodies are moved in a direction away from each other by the first gap adjusting bolt as the first gap adjusting bolt is drawn in the center direction, Is horizontally coupled to the inner circumferential surface of the horizontal pipe, the horizontal coupling pipe, the support pipe, or the support coupling pipe.
6. The method of claim 5,
Wherein the first spacing bolts are coupled to the upper body and the lower body, respectively.
6. The method of claim 5,
Wherein the non-skid member is mounted on outer circumferential surfaces of both ends of the connection block such that the tight contact force against the inner circumferential surface of the horizontal pipe, the horizontal coupling pipe, the support pipe or the support coupling pipe is improved.
5. The method according to any one of claims 1 to 4,
Further comprising a second joint unit capable of engaging a separate second support pipe in a perpendicular direction to the intermediate portion of the first support pipe.
The method of claim 8,
The second joint unit
The first support pipe and the second support pipe are formed to be symmetrically separated from each other so as to be rotatable about a hinge axis formed at one end thereof and to be rotatable about the hinge axis so as to surround the outer circumferential surface of the first support pipe, A first hinge body and a second hinge body formed in a cylindrical shape so as to be inserted into the second support pipe; And
The first hinge body and the second hinge body are pivotally coupled to each other so as to surround the first support pipe. The first hinge body and the second hinge body may be spaced apart from each other by the first hinge body or the second hinge body, And a second gap adjusting bolt threaded through the other end of the hinge body
And the first hinge body or the second hinge body is pressed by the second gap adjusting bolt and moved away from each other as the second gap adjusting bolt is drawn in the center direction, And the outer peripheral surface of the other end of the second hinge body is tightly coupled to the inner peripheral surface of the second support pipe.
The method of claim 9,
Wherein a non-slip member is mounted on an outer circumferential surface of the other end of the first hinge body and the second hinge body to improve a contact contact force with the inner circumferential surface of the second support pipe.
The method of claim 9,
Wherein the first hinge body and the second hinge body are rotatably coupled to one side of the first hinge body and the second hinge body so as to surround the first support pipe, And a fastening bolt for pressing the support pipe is fastened.

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