KR101796853B1 - Extender for extending length of support - Google Patents

Extender for extending length of support Download PDF

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Publication number
KR101796853B1
KR101796853B1 KR1020160001363A KR20160001363A KR101796853B1 KR 101796853 B1 KR101796853 B1 KR 101796853B1 KR 1020160001363 A KR1020160001363 A KR 1020160001363A KR 20160001363 A KR20160001363 A KR 20160001363A KR 101796853 B1 KR101796853 B1 KR 101796853B1
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KR
South Korea
Prior art keywords
pipe
extender
support
engaging
length
Prior art date
Application number
KR1020160001363A
Other languages
Korean (ko)
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KR20170082223A (en
Inventor
이정환
Original Assignee
삼목에스폼 주식회사
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Priority to KR1020160001363A priority Critical patent/KR101796853B1/en
Publication of KR20170082223A publication Critical patent/KR20170082223A/en
Application granted granted Critical
Publication of KR101796853B1 publication Critical patent/KR101796853B1/en

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48Supporting structures for shutterings or frames for floors or roofs
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00Shores or struts; Chocks
    • E04G25/04Shores or struts; Chocks telescopic
    • E04G25/06Shores or struts; Chocks telescopic with parts held together by positive means
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00Shores or struts; Chocks
    • E04G25/04Shores or struts; Chocks telescopic
    • E04G25/06Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/061Shores or struts; Chocks telescopic with parts held together by positive means by pins
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00Shores or struts; Chocks
    • E04G25/04Shores or struts; Chocks telescopic
    • E04G25/06Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/065Shores or struts; Chocks telescopic with parts held together by positive means by a threaded nut
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00Shores or struts; Chocks
    • E04G25/04Shores or struts; Chocks telescopic
    • E04G25/08Shores or struts; Chocks telescopic with parts held relatively to each other by friction or gripping

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a support for a building, and more particularly, to an extender for extending a support length, which can be easily combined with an outer pipe portion by a hook fastening method so as to conform to the length of a required support. To this end, the extender for extending the support length according to the present invention comprises: a first engaging portion formed to have the same inner and outer diameters as the outer pipe of the support, the inner pipe being drawn inwardly and coupled to each other through the fixing pin; And a second engaging portion formed at one side thereof with one end of the first engaging portion and engaged with the other end of the outer pipe, The inner diameter surface of the outer pipe and the inner diameter surface of the first coupling portion form the same passage surface through which the inner pipe can freely move in a state where the coupling between the outer pipe and the second coupling portion is completed.

Description

Extender for extending length of support

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a support for a building, and more particularly to an extender for extending a support length, which can be easily coupled to an outer pipe portion by a hook fastening method.

Generally, a supporting device for supporting the lower part of concrete or building site is used for pouring and curing concrete. A representative example of the supporting device is a pipe-type building support.

This construction support is used in a plurality of construction sites, so that a function of absorbing and supporting a compressive load of an excessive roof structure, which is locally applied during construction, with a uniform distribution load is provided.

That is, in order to construct a slab for partitioning upper and lower layers when a building is constructed, a slab formwork is installed at a lower portion of a slab to be installed. In the construction process, a temporary beam such as a joist line and a yoke Beams support the die, and the lower of the hypothetical beams support the pipe supports.

In order to adjust the height of the support beams, the supports are generally assembled in a height-adjustable structure.

As a representative example of such a construction support, there is a construction support provided with a hinge-type receiving plate disclosed in Korean Registered Utility Model No. 20-389388, which is provided with a support plate on one side, An outer pipe having a diameter larger than that of the inner pipe and having a support plate formed on one side and an adjustment screw having a long hole formed on both sides of the inner pipe; A fixing pin for fixing the outer pipe, and a height adjusting nut coupled to the adjusting screw to support both ends of the fixing pin.

Therefore, when the height adjusting nut is rotated in a state where one end of the inner pipe is inserted into one end of the outer pipe and the fixing pin is passed through the long hole and the pin hole and placed on the height adjusting nut, So that the inner / outer pipe moves relative to the length of the elongated hole of the adjustment screw to adjust the overall height of the support.

However, since the length of the elongated hole formed in the adjustment screw portion of the outer pipe is limited when the height of the conventional construction support having the above structure is adjusted, even if the height of the support is adjusted through the height adjusting nut, .

Therefore, when the height of the support is to be extended much longer than the length of the long hole, the inner pipe or the outer pipe must be used as a long length or the length of the long hole must be greatly increased. However, There has been a problem that a great deal of time and effort is required for the operator to attach the support since the weight is increased. Also, if the length of the long hole is excessively increased, the structural rigidity of the outer pipe is significantly lowered, There was a disadvantage that it could cause.

Registration Utility Model No. 20-389388 (20015.07.01)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide an extender for expanding a support length having an end shape similar to an end of an outer pipe, And it is an object of the present invention to provide an extender for extending a support length which can be easily extended to a required length by simply connecting the outer pipe portion of the support with a hook fastening method.

According to an aspect of the present invention, there is provided an extender for extending a support length, the extendible extension having an inner diameter and an outer diameter equal to those of the outer pipe of the support, Wealth; And a second engaging portion formed at one side thereof with one end of the first engaging portion and engaged with the other end of the outer pipe, The inner diameter surface of the outer pipe and the inner diameter surface of the first coupling portion form the same passage surface through which the inner pipe can freely move in a state where the coupling between the outer pipe and the second coupling portion is completed.

Here, the outer surface of either the outer pipe or the second engaging portion may be provided with a hook, which is elastically supported through a spring, and the outer surface of the other of the outer pipe and the second engaging portion may be provided with a hook capable of holding a hook.

In addition, the first engaging portion and the second engaging portion can be integrally joined through welding.

Further, a pin hole into which the fixing pin can be inserted may be formed in the outer pipe and the second coupling portion.

In addition, a pin hole into which the fixing pin can be inserted may be formed in the first coupling portion and the inner pipe.

Meanwhile, the outer surface of the second coupling portion may be provided with a hook, which is elastically supported through a spring, and a hook portion may be formed on the outer surface of the outer pipe and the first coupling portion.

The inner pipe includes a first inner pipe formed on the outer surface thereof with a plurality of pinholes spaced apart from each other along the longitudinal direction thereof and coupled to the inner pipe through the fixing pin in a state in which one side is drawn into the first coupling portion; And a second inner pipe which is inserted into the first inner pipe and to which the height adjusting nut for screwing the height adjusting nut for supporting the end of the first inner pipe is screwed to the outer surface.

At this time, a support plate having the same inner circumferential surface shape as the outer circumferential surface shape of the second inner pipe and having the same outer diameter as the first inner pipe may be coupled to one end of the first inner pipe.

According to the configuration of the present invention, since the extender manufactured to have a predetermined length can be easily coupled to the outer pipe end of the support in a hook fastening manner, the overall length of the outer pipe can be increased, Lt; / RTI >

In addition, since the extender can be manufactured in a certain length and weight unit, which is easy to work, and can be easily connected to each other by a hook fastening method, the length of the support can be extended. Therefore, The length extension work can be easily performed.

In addition, since it is possible to connect several extenders manufactured with a predetermined unit length in order to fit the required height of the support, compatibility with the extender is improved, and the efficiency of other operations is greatly improved .

In addition, since it is not necessary to apply a complicated and many mechanical structures to extend the support of a large width, it is possible to perform the construction of the support quickly and quickly, and also to reduce the construction cost.

1 is a perspective view showing an entire support structure to which an extender according to the present invention is applied.
Figure 2 is an exploded perspective view of Figure 1;
3 is an enlarged detail view of an extender structure for extending a support length according to the present invention.
Fig. 4 is an exploded perspective view of Fig. 3; Fig.
Fig. 5 is an operating state showing a state where the extender is hooked to one end of the outer pipe; Fig.
6 is an exploded perspective view of the inner pipe according to the present invention.
7 is a sectional view showing the entire support structure according to the present invention.
8 is an enlarged cross-sectional view of the portion "A" in Fig.
9 is an enlarged cross-sectional view of a portion "B" in Fig.

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

FIG. 1 is a perspective view showing an entire support structure to which an extender according to the present invention is applied, and FIG. 2 is an exploded perspective view of FIG. 1.

1 and 2, a support 100 according to an embodiment of the present invention includes an outer pipe 110, an inner pipe 120, and an extender (not shown) for extending the length of the outer pipe 110 140).

The outer pipe 110 is a tubular structure disposed on the upper side of the support 100 to support the lower surface of the slab formwork (not shown). The tubular structure forms a concavo-convex structure repeatedly protruded and recessed along the circumferential direction.

When the extender 140 is coupled to the outer surface of the lower end portion of the outer pipe 110, the hook portion 112 is formed so that the hook 152 provided on the outer surface of the extender 140 can be elastically hooked .

At this time, a plurality of the engaging portions 112 are arranged on the outer surface of the outer pipe 110 at regular intervals along the circumferential direction.

A pinhole 111 into which the fixing pin 170 can be inserted is formed on the outer surface of the lower end of the outer pipe 110.

The extender 140 is coupled to the lower end of the outer pipe 110 to extend the length of the outer pipe 110.

The extender 140 is a structure having a predetermined length so as to extend the length (height) of the support 100. The extender 140 is connected to the outer pipe 110 and the inner pipe 120 by at least one number, (100).

In this case, the extender 140 is formed to have a concave-convex structure corresponding to the tubular shape of the outer pipe 110, so that when the extender 140 is engaged with the outer pipe 110, relative rotation is performed in the circumferential direction .

The extender 140 is detachably coupled through a simple coupling method in which the upper end of the extender 140 is fitted to the outer surface of the lower end of the outer pipe 110 and is fastened to the hook.

The inner pipe 120 is connected to the lower end of the extender 140 coupled with the outer pipe 110 through the fixing pin 170.

FIG. 3 is a detailed view showing the structure of the extender 140 for extending the support length according to the present invention in detail, and FIG. 4 is a cutaway perspective view of FIG. 5 is an operational state view showing a state in which the extender 140 is hooked to the lower end of the outer pipe 110. Fig.

3 to 5, an extender 140 according to the present invention includes a first coupling portion 141 coupled with an inner pipe 120 through a fixing pin 170, And a second engaging portion 144 to be fastened.

The first coupling portion 141 is formed on the lower side of the extender 140 and is formed to have the same shape as the lower end of the outer pipe 110 so as to have compatibility with the inner pipe 120.

That is, in order that the shape of the lower end of the extender 140 combined with the outer pipe 110 can maintain the same shape as the shape of the lower end of the outer pipe 110, So as to maintain the same shape as the shape of the lower end of the frame.

More specifically, the first coupling portion 141 of the extender 140 is formed to have the same inner diameter and outer diameter as the outer pipe 110, and the extender 140 is coupled to the outer pipe 110 The inner and outer diameters of the first coupling portion 141 and the outer pipe 110 are formed so as to be aligned with each other.

A pinhole 142 into which the fixing pin 170 is inserted is formed on the outer surface of the lower end of the lower end of the first coupling portion 141. On the upper side of the first coupling portion 141 spaced from the pinhole 142, Hookable engaging portion 112 is formed to allow sequential connection of another extender having the same shape as that of the extender 140 shown in FIG.

The second engaging portion 144 is formed to have an outer diameter larger than that of the first engaging portion 141. A portion of the upper end of the first engaging portion 141 is inserted into the lower end of the second engaging portion 144, And the welded edge portion is welded and integrally joined.

A hook (not shown) is attached to the outer surface of the upper end portion of the second coupling portion 144 to be elastically hooked to the hook portion 112 formed on the outer surface of the outer pipe 110 when the outer pipe 110 is engaged with the outer surface of the lower end portion of the outer pipe 110 152 are provided.

In this case, the hook 152 is disposed on the inner side of the bracket 151 fixed to the outer surface of the upper end of the second engaging part 144, and is installed to penetrate through the bracket 151 and the hook 152 153, respectively.

The hook 152 and the hook 152 are arranged such that the upper end of the hook 152 is always directed toward the center of the second engaging portion 144 when the hook 152 is rotated about the shaft 153 A spring 154 is provided between the brackets 151.

When the outer pipe 110 is coupled with the outer pipe 110, the upper end of the second coupling part 144 is inserted into the outer surface of the lower end of the outer pipe 110, ). ≪ / RTI >

That is, when the second engaging portion 144 is lifted, the upper end inclined surface of the hook 152 provided on the outer surface of the second engaging portion 144 is moved upward by riding the outer surface of the engaging portion 112 of the outer pipe 110 The end of the hook 152 is hooked on the upper end of the latching part 112. Thus, the extender 140 can be quickly and simply coupled to the outer pipe 110 in a one-touch manner.

When the extender 140 is coupled to the outer pipe 110 through the above process, the upper end surface of the first coupling portion 141 of the extender 140 is connected to the lower end surface of the outer pipe 110, And contact with each other at an inner middle portion of the inner wall 144.

When the coupling between the outer pipe 110 and the extender 140 is completed as described above, the passage surface connecting the inner diameter surface of the outer pipe 110 and the inner diameter surface of the first coupling portion 141 has a separate protruding structure So that the inner pipe 120 can smoothly be inserted into and removed from the inner space of the outer pipe 110 including the extender 140.

A pin hole 111 and 145 are formed in the second coupling portion 144 of the outer pipe 110 and the extender 140 so that the fixing pin 170 can be inserted. The upward and downward flow between the outer pipe 110 and the second engaging part 144 can be suppressed by inserting the fixing pin 170 into the first and second engaging parts 111 and 145.

After the entire length of the outer pipe 110 is extended by connecting the extender 140 to the lower end of the outer pipe 110 as described above, the inner pipe 120 is inserted into the first coupling portion 141 of the extender 140, And the fixing pins 170 are inserted into the pinholes 142 and 123 formed in the first coupling part 141 and the inner pipe 120 so that the distance between the extender 140 and the inner pipe 120 Lt; / RTI >

The hook 152 may be formed on the upper end surface of the extender 140 and the hook 112 may be formed on the outer surface of the lower end of the outer pipe 110, The hooks may be provided on the outer pipe 110 and the hooks may be formed on the extender 140 so as to be removable from each other .

6 is an exploded perspective view showing a detailed structure of the inner pipe 120 according to the present invention.

6, the inner pipe 120 includes a first inner pipe 122 connected to the extender 140, a second inner pipe 122 connected to the first inner pipe 122 and supported on the upper surface of the bottom, 124).

Specifically, the first inner pipe 122 is formed to have an outer diameter smaller than an inner diameter of the first coupling portion 141 so that the first inner pipe 122 can freely enter and exit the inner space of the first coupling portion 141 of the extender 140.

A plurality of pinholes 123 through which the fixing pins 170 can be inserted are formed on the outer surface of the first inner pipe 122 at regular intervals along the longitudinal direction of the first inner pipe 122.

The first inner pipe 122 having such a structure is drawn into the lower end portion of the first engaging portion 141 of the extender 140 and is moved to a necessary predetermined position. Thereafter, the first inner pipe 122 and the first inner pipe 122, The fixing pins 170 are inserted into the pinholes 123 and 142 formed on both sides of the coupling portion 141 to be mutually coupled with the first coupling portion 141.

On the other hand, the second inner pipe 124 is disposed at the lowermost portion of the support 100, the upper portion thereof is drawn into the first inner pipe 122, and the lower end portion thereof is supported on the upper surface of the bottom.

A thread 124 is formed on the outer surface of the second inner pipe 124 along the longitudinal direction and a height adjusting nut 126 is coupled to the thread 124 by screws.

Accordingly, the lower end of the first inner pipe 122 is held in a state of being supported by the portion of the height adjusting nut 126 screwed to the outer surface of the second inner pipe 124. In this state, The height of the support 100 is adjusted by moving the first inner pipe 122 and the second inner pipe 124 up and down by rotating the height adjusting nut 126.

At this time, a support plate 127 is provided at the lower end of the first inner pipe 122 so as to contact the height adjusting nut 126 in a wide contact area when the height adjusting nut 126 rotates, .

At this time, the inner circumferential surface shape of the support plate 127 has the same shape as the outer circumferential surface shape of the second inner pipe 124, and the outer diameter of the support plate 127 is formed to have the same outer diameter as the first inner pipe 122 .

The support plate 127 having such a structure is welded to the lower end of the first inner pipe 122 and has a height adjusting nut 126 fastened to the outer surface of the second inner pipe 124 and a wide contact area The operator can rotate the height adjusting nut 126 easily without rotating the height adjusting nut 126 when the height adjusting nut 126 is rotated to perform the height adjusting operation of the support 100. Therefore, Thereby facilitating the height adjustment operation of the light guide plate.

The extender 140 according to the present invention having the above-described configuration sequentially attaches one or more extender 140 to the lower end of the outer pipe 110 when the support 100 is to be extended in length (height) The length of the support 100 can be extended to a required length by engaging the inner pipe 120 with the inner pipe 120.

In this case, since the extender 140 is manufactured in a predetermined length and weight unit, which is easy to work, and can be easily connected to each other by one-touch coupling by a hook fastening method, So that the work can be easily performed without applying a relatively large force.

FIG. 7 is a cross-sectional view showing an extension of the length of the support 100 using one extender 140 manufactured in a unit length. 8 and 9 are enlarged cross-sectional views of the portions "A" and "B" in FIG. 7

Hereinafter, a method of extending the length of the support 100 using the extender 140 of the present invention will be described with reference to FIGS. 7 to 9. FIG.

The extension of the length of the support 100 using the extender 140 of the present invention is performed by hooking the second joint portion 144 of the extender 140 to the lower end of the outer pipe 110 .

That is, the extender 140 may be connected to the outer pipe 110 by a simple operation of inserting the upper end of the second coupling portion 144 of the extender 140 into the outer surface of the lower end of the outer pipe 110, have.

The upper inclined surface of the hook 152 provided on the outer surface of the second engaging portion 144 of the extender 140 is moved upward by the outer surface of the engaging portion 112, The extender 140 can be easily and easily coupled to the lower end of the outer pipe 110 by being hooked on the upper end of the locking part 112 through the process of returning.

When the coupling is completed through the above process, a length corresponding to one-half of the second coupling portion 144 of the extender 140 and a length corresponding to one half of the first coupling portion 141, The entire length of the outer pipe 110 is greatly expanded and the shape of the lower end of the outer pipe for connection with the inner pipe 120 can be changed as it is .

After the tightening operation of the extender 140 is completed at the lower end of the outer pipe 110 as described above, the first inner pipe 122 is drawn into the first engaging portion 141 of the extender 140, The second inner pipe 124 is inserted into the first inner pipe 122 and then the fixing pin 170 is inserted into the pin hole 142 of the first coupling portion 141 The first inner pipe 122 is inserted into the pinhole 123 of the first inner pipe 122 to fix the extender 140 and the first inner pipe 122 so as not to move up and down. And the lower end of the support 100 is supported by the height adjustment nut 126, thereby completing the primary height expanding operation of the support 100.

When the height of the support 100 is completed through the extender 140 as described above, the lower end and the upper end of the support 100 can be completely contacted with the bottom of the floor and the lower surface of the slab formwork, Height adjustment work is performed.

That is, when the height adjusting nut 126 fastened to the outer surface of the second inner pipe 124 is rotated, the height adjusting nut 126 rises or rises on the outer surface of the second inner pipe 124, The height of the support 100 can be finely adjusted by adjusting the height of the support 100 using the height adjusting nut 126 so that the upper and lower ends of the support 100 can be fixed to the slab die So that it can be firmly supported on the lower surface and the upper surface of the floor.

One or more extender 140 manufactured to have a constant unit length can be simply coupled to the end of the outer pipe 110 of the support 100 in a one-touch fastening manner by hook coupling, It is possible to extend the length of the support 100 through a simple connecting process of inserting the inner pipe 120 into the inner pipe 120 and connecting the inner pipe 120 through the fixing pin 170. Therefore, So that the support 100 can be quickly and easily extended to a desired height.

In addition, since the outer pipe 110, the extender 140, and the inner pipe 120 which are engaged with each other form a concavo-convex structure along the circumferential direction, the support 100 using the extender 140 The rotation in the circumferential direction between the extender 140 and the outer pipe 110 and the inner pipe 120 can be suppressed.

A separate fixing structure such as a fixing pin may be inserted to prevent rotation between the outer pipe 110 and the extender 140 and between the extender 140 and the inner pipe 120 or between neighboring supports 100 It is possible to improve the workability and shorten the working time, as well as to greatly reduce the construction cost.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Will be possible.

100: Support 110: Outer pipe
111, 123, 142, 145: pinhole 112, 143:
120: inner pipe 122: first inner pipe
123: pinhole 124: second inner pipe
125: threads 126: height adjustment nut
127: support plate 140: extender
141: first coupling portion 144: second coupling portion
151: Bracket 152: Hook
153: Axis 154: Spring
170: Fixing pin

Claims (8)

The extender for supporting a length of a support which is made to have a constant unit length and is provided in at least one number between an inner pipe and an outer pipe and is detachably connected to each other along a longitudinal direction to thereby extend a length of a support,
A first engaging portion formed on an outer surface of the outer pipe portion and having an engaging portion formed on the outer pipe and another engaging portion and a pin hole corresponding to the pin hole;
And a hook which is hooked on a hook portion of the outer pipe so as to prevent the outer pipe from being detached in a state where the outer pipe is connected to the outer pipe is connected to the outer pipe connected to the outer pipe, And a second engaging portion,
Wherein an inner diameter surface of the outer pipe and an inner diameter surface of the first engaging portion form the same passage surface in a state where the outer pipe and the second engaging portion are engaged with each other.
delete 2. The extender according to claim 1, wherein the first engaging portion and the second engaging portion are integrally joined through welding.
2. The extender according to claim 1, wherein the second coupling portion is formed with another pinhole corresponding to the pinhole formed in the outer pipe so that the fixing pin can be inserted.
2. The extender according to claim 1, wherein the inner pipe has a pinhole into which a fixing pin can be inserted.
delete 2. The internal combustion engine according to claim 1,
A first inner pipe formed on the outer surface of the first inner pipe and having a plurality of pinholes formed at regular intervals along the longitudinal direction and coupled through the fixing pin in a state where one side is inserted into the first coupling portion;
A second inner pipe connected to the first inner pipe and having an outer surface formed with a height adjusting nut screwed to the end of the first inner pipe;
And an extender for extending the support length.
The support pipe according to claim 7, wherein a support plate having the same inner peripheral surface shape as the outer peripheral surface shape of the second inner pipe and having the same outer diameter as the first inner pipe is coupled to one end of the first inner pipe Extension extender.
KR1020160001363A 2016-01-06 2016-01-06 Extender for extending length of support KR101796853B1 (en)

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KR1020160001363A KR101796853B1 (en) 2016-01-06 2016-01-06 Extender for extending length of support

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Application Number Priority Date Filing Date Title
KR1020160001363A KR101796853B1 (en) 2016-01-06 2016-01-06 Extender for extending length of support

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KR101796853B1 true KR101796853B1 (en) 2017-11-10

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