KR101862655B1 - Multi-Stiffener for Civil Engineering and Construction Work - Google Patents

Abstract

An object of the present invention is to provide a multi-stiffener for civil use, which is easy to install and dismantle, reusable, easily adjustable in length, and has high economy.
To this end, according to the present invention, a pair of guide holes 11b are formed symmetrically along a longitudinal direction from a position spaced apart from a clogged end, and a height adjusting male screw 11c is formed around the guide hole 11b An outer member (11); A plurality of through holes 12a are formed symmetrically at specific distances from the open end, and the clogged portions are inserted into the through holes 11a of the outer tubular member 11 to form the through holes 12a in the longitudinal direction An inner tube member (12) to be moved; An outer tube receiving plate 13 integrally formed at an open end of the outer casing member 11; An inner pipe support plate (14) integrally formed at an open end of the inner pipe member (12); An inner tube position adjusting pin 15 provided so as to pass through the guide hole 11b of the outer appearance member 11 and the through hole 12a of the inner tube member 12 at the same time; A positioning hole 16 for changing the position of the inner pipe position adjusting pin 15 through rotation is formed inside the outer member 11 by forming a female screw fastened to the height adjusting male screw 11c of the outer member 11, ); ≪ / RTI >

Description

[0001] The present invention relates to a multi-stiffener for preventing a local buckling of a belt,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a multi-stiffener for securing the strength of a stiffened band member and preventing local buckling, and more particularly, to a stiffener for installing a stiffener The present invention relates to a multi-stiffener which can be easily reused and can be easily adjusted in length of the stiffener.

Generally, at the time of construction work, first of all, the excavation of the ground is carried out and the necessary construction is carried out after the earthquake is installed to prevent the collapse of the ground.

Such a retaining structure is installed by using a stratified boom construction method or a ground anchor construction method, and an H beam type wale is installed perpendicularly to the inside of the strut in the horizontal direction to support the strut.

However, in the case of the earth retaining structure having the above structure, the load is concentrated on the wale band installed in the horizontal direction, and when the local buckling occurs in the wale band, the back ground buckling or collapse may occur.

That is, when the shear stress increases in the wale band, buckling occurs in the wale band, thereby causing deformation and shear failure of the band zone.

As a result, an eccentric load acts on the strut which is horizontally installed, so that the screw jack or the like is destroyed, and the accidental collapse of the retaining structure may occur.

In order to solve the above-mentioned problems, a stiffener for reinforcing a wale band is provided in the wale band of the earth retaining sheath at predetermined intervals in order to prevent local buckling due to shearing force and ensure rigidity.

In the above-mentioned wale-like reinforcing stiffener, the steel plate is usually worked to conform to the wale-shaped wale of the H beam, and is then joined between the flanges of the belt by Fillet welding.

As a result, it has been pointed out that it takes a long time to install the wristband reinforcing stiffener.

For the above reasons, the stiffener for reinforcing the welt is optionally omitted in the actual site, and the stiffener is provided only on the upper portion of the stiffener which is easy to be visually checked at the time of safety inspection, so that deformation and collapse of the retention wall, have.

In addition, the conventional method of attaching an iron plate to a wrist band by welding is uneconomical because it can not be reused, and it is difficult to change the position once the stiffener is installed, and a labor cost is increased because a skilled worker is required in the fillet welding work have.

In addition, the steel plate must be separately machined to fit the size of the belt, and the lower part of the belt must be welded upward, thus degrading the quality of the construction.

In addition, there is a possibility that an accident that a worker falls or an electric shock may occur during welding work, there is a danger of explosion, and there is a problem that when a worker performs an operation in an unsafe posture for a long time, it causes musculoskeletal diseases.

In order to solve the problems of the welded stiffener described above, non-compliant stiffeners of various structures have been developed and used.

According to the non-charged stiffener, the problem of the welded stiffener can be solved.

However, the conventional non-built-in stiffener has a problem that the length of the stiffener is limited or the length of the stiffener is not adjustable.

In addition, some of the conventional non-built-in stiffeners can not be installed in a specific section or have difficulty in construction. When the spanner is used to adjust the length, the bolt for adjusting the length needs to be rotated several times.

Meanwhile, as a result of investigation of the prior art related to the present invention, a large number of patent documents have been searched and some of them will be described as follows.

Patent Literature 1 discloses a stiffener jack in which a support plate on which a slip stopper is formed is formed with a stiffener jack operated through a spacing bar so as to be used in combination with a HBS band, It is possible to prevent breakage and to securely support the vertical and horizontal loads on the structure to prevent creep deformation due to the axial action between the braces and the wrist strap. In the use of the stiffener jack, The work time can be shortened and the construction period can be shortened to have an economical effect. Since the welding work can be omitted between the wales, it is possible to solve the inconvenience of the work due to the loss of the HR beam and welding, Gas Stiffener jack for safety of workers due to work And there.

Patent Document 2 includes a contact support portion including a magnetic functional member for freely attaching and detaching to and from a wrist band, and a contact support portion including a telescopic rod having a jack function projection or a jack function nut for allowing the telescopic shaft to expand and contract, Wherein a female screw portion is formed at an inlet of the expansion and contraction rod of the contact support portion so that the expansion and contraction screw portion can be screwed into the female screw portion; And the contact support portion is provided so as to be easily detached and attached between the flanges of the belt strip in the field by allowing the withdrawal protrusion to be included in the inside of the inlet in the expansion and contraction rod, The present invention relates to a jack stiffener having a magnetic body and capable of being reused as well as being more economical and convenient for installation and capable of preventing a safety accident by omitting a gas welding operation.

 Patent Document 3 discloses a stiffener for preventing flange buckling of an H-shaped steel used for supporting a wale band or a brace, comprising: at least one steel pipe positioned between flanges of the H-shaped steel and facing each other to resist a compressive force; Since the steel pipe supporting clip is provided at both ends or at either end of the supporting steel pipe to support the supporting steel pipe to the H-shaped steel pipe, it can be installed without welding work and can be attached to or detached from the H- Describes a stiffener for preventing flange buckling of H-shaped steel which is easy to cope with when the earth anchor is changed in position or when a brace is changed in installation, and has excellent compressive strength.

Patent Document 4 discloses a hose having a support plate mounted on a flange portion of a H-shape steel, a support shaft having a screw shaft coupled to an expansion nut on one support plate and a screw shaft inserted into the support plate on the other support plate, A separate magnet body is attached to the bottom of the front end of the H-shaped section so that the H-shaped section can be applied to H-shaped sections of all kinds and sizes, Since the stapler jack is fastened and disassembled through the rotation of the nut, it is easy to use and easy to disassemble and disassemble, and has a relatively simple structure, so that it can be mass-produced with excellent productivity and assemblability. As it is mounted on the end, the bending of the H-beam due to the pressure For that can be made effective from the corresponding winding, H-beams variable stiffener and described with respect to the jack.

Patent Document 5 discloses a stiffener for preventing buckling of an H-shaped steel band, comprising: a stiffener body detachably mounted on a web of an H-shaped steel band; A pair of paper compression units arranged side by side at a predetermined distance on the stiffener body and rotatably provided independently of each other at a predetermined position; By including the pressurizing member which is screwed to allow the movable member to move forward and backward at a certain interval at the other end of each of the pair of presses, it is easy to mount the H-shaped steel band, And a stiffener for buckling prevention of the earth retaining wall band is provided for simplifying the operation of the user.

Patent Document 6 discloses an H-beam deformation-preventing stiffener installed between flanges of an H-beam to prevent buckling of the H-beams, the stiffener comprising: a body having a slide hole formed on one side or both sides; A support having one end inserted into the slide hole of the main body and the other end contacting the flange; And a movable member which is coupled to the main body and linearly moves the support, thereby preventing the H Be beam from being buckled by an external force by strongly supporting the flange of the H Beam.

KR 20-0270234 Y1 KR 10-0851062 B1 KR 10-2012-0106485 A KR 10-2012-0140318 A KR 10-2014-0063340 A KR 10-2014-0142539 A

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a multi-stiffener for a building which is easy to install and disassemble, It has its purpose.

Another object of the present invention is to make it possible to easily adjust the length of the stiffener, thereby shortening the working time by installing the stiffener.

According to an aspect of the present invention, there is provided a method of manufacturing a scroll fluid machine, the scroll compressor including a pair of guide holes formed along a longitudinal direction from a position spaced from a closed end, An outer tubular member formed symmetrically and having a height adjusting male screw formed around the guide hole; An inner tube member which is formed by forming a closed pipe at one end and in which a plurality of through holes are symmetrically formed at specific distances from an opened end thereof and a clogged portion is inserted into the through hole of the outer member and moved in the longitudinal direction; An outer tube integrally formed on an open end of the outer tube; An inner pipe support plate integrally formed on the open end of the inner pipe member; An inner tube position adjusting pin provided so as to penetrate the guide hole of the outer appearance member and the through hole of the inner tube member at the same time; And a positioning hole formed on the inside of the outer member for fixing the height adjusting male screw of the outer member to be fixed to the outer member and changing the position of the inner hole position adjusting pin through rotation.

According to the construction multi-stiffener of the present invention, a plurality of projections are formed on the inner tube position adjusting pin so as to protrude therefrom, and on the outer surface thereof, a direction indicating portion indicating a moving direction along the rotating direction is formed.

According to the construction multi-stiffener of the present invention, a pair of the inner tube positioning pins are inserted into the outer tube member at a position spaced apart from the open end of the outer tube member by a certain distance from the clogged portion of the inner tube member. And through holes for accommodating are formed, respectively.

According to the civil multi-stiffener of the present invention, the mounting grooves for inserting the magnets are formed at four corners of the outer tube receiving plate and the inner tube receiving plate.

According to the construction multi-stiffener of the present invention, a position indicating portion indicating the position of the through hole is formed around the through-hole of the inner pipe member.

According to the civil multi-stiffener of the present invention, the inner tube position adjusting pin has a head portion having a diameter larger than that of the guide hole of the outer tube member, and the fall-off preventing member is detachably coupled to the end portion. do.

According to the construction multi-stiffener of the present invention, the convex portion is formed symmetrically along the longitudinal direction inside the outer tubular member, and the inner tubular member is formed with the concave portion corresponding to the convex portion.

According to the multi-stiffener for civil use according to the present invention, compared with the stiffener of the conventional welding type, the economical efficiency, the safety and the workability are excellent.

In addition, since it can be reused, it is highly economical and easy to install, it is possible to reduce unstable cases of the stiffener, and it is easy to adjust the length, so that it is highly versatile.

In addition, there is no danger of fire explosion and electric shock because there is no welding and melting work, and labor costs can be reduced because no skilled workers are required.

In addition, compared with the conventional non-stiff stiffener, the manufacturing cost is low, the construction is simple and the economy is high, and the operation time is shortened, thereby reducing the risk of accidents.

In addition, since the direction indicating the direction of rotation in the direction of rotation is displayed in the direction indicator of the position adjuster, it is possible to reduce the human error at the time of adjusting the length, thereby shortening the working time and reducing the loss and loss of parts.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram showing a civil multi-stiffener according to the present invention; Fig.
2 is a cross-sectional view of a civil multi-stiffener of the present invention.
3 is a cross-sectional view of an inner tubular member and an outer tubular member of a multi-striker for civil use of the present invention.
4 is a configuration diagram of an inner tube position adjusting pin which is a substantial part of the present invention.
5 is a front view of an inner tube member and an inner tube receiving plate, which are essential parts of the present invention.
FIG. 6 is a photograph showing a position control part which is a main part of the present invention. FIG.
7 and 8 are diagrams showing the state of use of the civil multi-stiffener of the present invention.
9 is a reference view showing a structural analysis result of a civil multi-stiffener according to the present invention.
10 is a reference view showing a structural analysis result of an inner pipe height adjusting pin which is a main part of the present invention.

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

1 to 6, the multi-stiffener according to the present invention is formed in the shape of a pipe with one end closed, a through hole 11a of a predetermined size is formed in a clogged portion, A pair of guide holes 11b are formed symmetrically along the longitudinal direction from the positions where the guide holes 11b are formed and the height adjustment male screw 11c is formed around the guide holes 11b; A plurality of through holes 12a are formed symmetrically at specific distances from the open end and the clogged portion is inserted into the through hole 11a of the outer shell member 11, (12); An outer tube receiving plate 13 integrally formed at an open end of the outer tube member 11; An inner pipe support plate (14) integrally formed at an open end of the inner pipe member (12); An inner tube position adjusting pin 15 provided so as to penetrate through the guide hole 11b of the outer tube member 11 and the through hole 12a of the inner tube member 12 at the same time; And a female screw fastened to the male screw 11c of the height adjusting male screw 11c of the outer male screw member 11 is formed on the inner side of the outer male screw member 11 so as to be fixed to the outer male screw member 11, 16).

Here, the outer tubular member 11 and the inner tubular member 12 are made of a hollow-shaped steel pipe, and their lengths are preferably 20 cm each.

The minimum length when the inner tubular member 12 is completely inserted into the outer tubular member 11 is 21 cm and the maximum length in the state where the minimum insertion length of the inner tubular member 12 is 5 cm is 35 cm .

In the civil engineering and construction site, the H beam is 250 × 250 × 9 × 14, 300 × 200 × 9 × 14, 300 × 300 × 10 × 15, 300 x 305 x 15 x 15, and 350 x 350 x 12 x 19 are widely used.

However, when the present invention is applied to a wristwatch of a special standard that is not general-purpose, the inner pipe member 12 may be separately manufactured and used (in some underground cars, 440 x 300 x 11 x 18, 700 x 300 x 13 x 24 standard Is used).

The thickness of the inner tubular member 12 and outer tubular member 13 are set to be 2.2 to 2.6 mm or more and the thickness of the outer tubular member 11 to be 2.0 mm, Mm. It is preferable that the diameter of the inner pipe position adjusting pin 15 is at least 17 mm.

3, a convex portion 11 'is formed symmetrically along the longitudinal direction inside the outer tube member 11, and the inner tube member 12 is provided with a convex portion 11' It is preferable that a corresponding recess 12 'is formed.

This ensures that the guide hole 11b of the outer tubular member 11 is aligned with the through hole 12a of the inner tubular member 12 and that the inner tubular member 12 can move only in the longitudinal direction within the outer tubular member 110 .

As shown in FIG. 6, the positioning tool 16 is preferably configured such that a plurality of protrusions 16a protrude from the outside thereof and can be grasped by hand.

Further, on its outer surface, a direction indicator 16b indicating the direction of movement along the direction of rotation is preferably formed so that the user can quickly recognize the direction of movement.

A pair of inner tube positioning pins 15 are inserted at positions spaced apart from the open end of the outer tube member 11 and at a position spaced apart from the clogged portion of the inner tube member 12 It is preferable that the through holes 11d and 12c for storing are respectively formed.

This is to minimize the size of the stiffener when not in use.

That is, if the inner pipe member 12 is completely inserted into the outer pipe member 11 and then the inner pipe position adjusting pin is inserted into the receiving through-hole to fix the inner pipe member so as not to move, the overall size can be reduced.

The outer tube receiving plate 13 and the inner tube receiving tube 14 have a structure in which mounting grooves 13 'and 14' are formed at four corners so that the magnets 17 can be inserted.

By the magnet 17, the multi-stiffener for civil use can be easily installed in the wale.

Meanwhile, a plurality of through holes may be formed in the outer tube receiving plate 13 and the inner tube receiving plate 14 and fixed to the wale using bolts and nuts. Alternatively, magnets, bolts and nuts may be used at the same time.

It is preferable that a position indicating portion 12b indicating the position of the through hole 12a is formed around the through hole 12a of the inner pipe member 12. [

The position display unit displays a numerical value indicating a minimum distance between the outer tube receiving plate and the inner tube receiving plate in a state where the inner tube position adjusting pin is inserted into the through hole.

With the above-described position display unit, it is possible to reduce the operation time of the positioning tool by selecting the through hole having the proper position according to the distance between the flanges on both sides of the band and coupling the inner tube position adjusting pin.

4, the inner tube position adjusting pin 15 has a head portion 15 'having a larger diameter than the guide hole 11a of the outer tube member 11, It is preferable that the falling-off prevention piece 18 is rotatably provided.

The detachment prevention piece 18 may be configured to be detachably coupled to the end of the inner pipe position adjustment pin 15. In this case, the detachment prevention piece 18 and the inner pipe position adjustment pin 15).

Hereinafter, the effect of the stiffener according to the present invention will be described.

First, the length stamped on the position indicating portion of the inner pipe member is checked according to the standard of the belt, and the through hole to which the inner pipe position adjusting pin is inserted is selected.

Then, after the inner tube position adjusting pin is inserted into the guide hole of the outer member, the outer tube member is passed through the selected through hole and the end portion is protruded from the other guide hole of the outer tube member. Then, Operate the pin so that it does not fall off.

When the length of the multi-stiffener is adjusted through the above process, a stiffener is provided between the flanges on both sides of the band.

At this time, after fastening the outer casing plate using a bolt or a magnet, and rotating the positioning tool to finely move the inner pipe member to be brought into close contact with the flange of the belt zone, Is completed.

Meanwhile, in order to confirm the structural stability of the multi-stiffener for civil use according to the present invention, structural analysis was carried out and the following results were obtained.

Structural analysis was carried out with an allowable axial force of 40 kN at the upper end of the inner pipe for a safety examination of the allowable maximum axial force of 40 kN (maximum axial force of 100 kN, SF: 2.5) of the outer and inner members.

The inner and outer plates are modeled by hinges and the connection between the outer member and the inner member is defined as the allowable axial stress of the outer member and the inner member in the rigid connection state And the safety of the external bending stresses at the allowable maximum axial force of the outer and inner pipe plates was examined.

Fig. 9 shows the results of the experiment.

As a result of the test, the axial stress fmax of the inner pipe member was 121.4 MPa, which was less than 133 MPa which is the allowable axial stress (fca), and the axial stress fmax of the outer member was also 121.1 MPa, (fca) of less than 133 MPa.

In addition, the bending stresses of the outer plate and the inner plate were 41.1 MPa and 49.3 MPa, respectively, which were much smaller than the allowable bending stress of 140 MPa.

In order to accomplish this, the outer surface of the inner pipe meeting with the inner pipe position adjusting pin was modeled by a roller. In order to load the allowable maximum axial force of 40 kN, 20 kN The safety for the shearing at the right and left sides of the inner pipe position adjusting pin was examined.

Fig. 10 shows the results of the experiment.

As can be seen from FIG. 10, the maximum shear stress (Vmax) acting on the inner pipe position adjusting pin was 82.0 MPa, which is good and the allowable shear stress (Va) was less than 88 MPa.

Therefore, it can be estimated that the civil multi-stiffener of the present invention can be used as an effective means for preventing the local buckling of the belt zone in the field of civil engineering.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be appreciated by those of ordinary skill in the art that numerous changes and modifications can be made to the present invention without departing from the scope of the present invention. And all such modifications and changes as fall within the scope of the present invention are therefore to be regarded as being within the scope of the present invention.

11 ... outer member
11a ... through hole
11b ... guide hole
11c ... male thread
11d ... through hole for storage
11 '... convex portion
12 ... member of inner pipe
12a ... through hole
12b ... position indicator
12c ... through hole for storage
12 '... concave portion
13 ... exterior plate
13 '... mounting groove
14 ... inner plate
14 '... mounting groove
15 ... Inner tube position adjustment pin
15 '... head portion
Position 16
16a ... projection
16b ... direction indicator
17 .... magnets
18 ... anti-fall prevention

Claims (7)

A pair of guide holes 11b are formed symmetrically with respect to the longitudinal direction from a position spaced apart from the closed end by a predetermined size through hole 11a formed in the clogged portion. , An outer tubular member (11) having a height adjusting male screw (11c) formed around the guide hole (11b);
A plurality of through holes 12a are formed symmetrically at specific distances from the open end and the clogged portion is inserted into the through hole 11a of the outer shell member 11, (12);
An outer tube receiving plate 13 integrally formed at an open end of the outer tube member 11;
An inner pipe support plate (14) integrally formed at an open end of the inner pipe member (12);
An inner tube position adjusting pin 15 provided so as to penetrate through the guide hole 11b of the outer tube member 11 and the through hole 12a of the inner tube member 12 at the same time;
And a female screw fastened to the male screw 11c of the height adjusting male screw 11c of the outer male screw member 11 is formed on the inside of the outer male screw member 11 so as to be fastened to the outer male screw member 11, (16), for preventing local buckling of the belt zone, characterized in that the multi-
A plurality of protrusions 16a protrude from the positioning hole 16 and a direction indicator 16b is formed on the outer surface of the positioning hole 16,
A pair of receiving members 15 for receiving the inner tube position adjusting pin 15 at a position spaced apart from the open end of the outer tube member 11 and at a position spaced apart from the clogged portion of the inner tube member 12 Through holes 11d and 12c are formed respectively so that the height of the stiffener when it is not used can be minimized and stored,
Mounting grooves 13 'and 14' in which magnets 17 are inserted are formed at four corners of the outer tube receiving plate 13 and the inner tube receiving plate 14 so that the mounting grooves 13 'and 14' ) Are brought into close contact with the flange portions of the belt strip,
A position indicating portion 12b indicating the position of the through hole 12a in numerical form is formed around the through hole 12a of the inner pipe member 12,
The inner tube position adjusting pin 15 is provided with a head portion 15 'having a diameter larger than that of the guide hole 11a of the outer tubular member 11 and a fall- So as to prevent the detachment of the inner pipe position adjusting pin (15), so as to prevent local buckling of the band zone. delete delete delete delete delete The method according to claim 1,
A convex portion 11 'is formed symmetrically along the longitudinal direction inside the outer tubular member 11 and a concave portion 12' corresponding to the convex portion 11 'is formed in the inner tubular member 12 To prevent the outer member (11) and the inner member (12) from rotating. The multi-stiffener according to claim 1, wherein the outer member (11) and the inner member (12)

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