KR20200072063A - product and connecting method of Coupler of connecting reinforcing rod - Google Patents

Abstract

The present invention relates to a method for manufacturing and fastening a coupler for coupling reinforcing bars. According to the present invention, the coupler for coupling reinforcing bars comprises: a fixing member (110); disk-shaped bases (130) inserted through hollow holes formed on both ends of the fixing member (110), respectively; a piece body (140) consisting of a plurality of divided pieces; a sleeve (150); and a spring (160). According to the present invention, the time required for a coupling can be reduced, and a piece body can be easily and precisely manufactured.

Description

Manufacturing and fastening of couplers for rebar joints{product and connecting method of Coupler of connecting reinforcing rod}

The present invention relates to a method for manufacturing and fastening a coupler for reinforcing bars used when connecting members of a long round bar shape such as a pipe or a reinforcing bar to each other, and more specifically, it is easy to fasten between members of a round bar shape and prevent initial slip. The present invention relates to a method for manufacturing and fastening a coupler for reinforcing bar joints, which are capable of remaining and deformed in accordance with performance standards and capable of easily and accurately manufacturing knitted fabrics.

In general, a coupler for reinforcing bar is used when connecting members of a long bar shape such as pipes or reinforcing bars to each other. In the prior art, the connection ends of the two reinforcing bars (A) in the registered patent publication no. A reinforcing bar coupler capable of accommodating the reinforcing bar from a side to connect, wherein the reinforcing bar coupler includes: a coupler body in which the reinforcing bars are inserted to form two reinforcing bars; A plurality of coupler locks slidingly coupled to the circumference of the coupler body to hold a node of the release bar to prevent the release bar (A) from falling out; Two forming springs in which a protruding part contacts one end of the coupler lock, is joined to one side of the coupler body, and the release reinforcing bar is tightly coupled to the coupler lock by applying a force to push back the release reinforcing bar; A female coupler housing in which the coupler body and the coupler lock are inserted, and the coupler body is completely enclosed so that the coupler lock does not deviate from the coupler body, and a female screw is formed on one side; The coupler body and the coupler lock are inserted therein, and the coupler lock is composed of a male coupler housing which is completely wrapped around the coupler body and formed with a male screw on one side so as not to be detached from the coupler body, and screwed with the female coupler housing, The coupler body has a rebar insertion hollow in which the release reinforcing bar is inserted in the center, a lock insertion opening of the same amount as the number of the coupler locks in the longitudinal direction from the circumference, and one end of the forming spring is inserted. A spring insertion hole serving as a passage for contacting the coupler lock is formed, and in the lock insertion opening, a lock installation jaw is formed in which the coupler lock is mounted and slid in the longitudinal direction, and the coupler lock is a shape in which a rectangular parallelepiped is cut diagonally. The inclined angle cut by is the same as the inclined angle of the cone of the coupler body, and the coupler lock is easily inserted when the node A1 of the release bar is inserted in the longitudinal direction and inclined in one direction so that it can be caught when it falls out. A tooth, a lock installation protrusion that is caught by the lock installation jaw is formed, the forming spring is composed of a spring body of a disc ring shape and a compression protrusion of the same quantity as the number of the coupler lock formed on the spring body, the The spring body is formed with a circular hollow through which the release reinforcing bar passes and can be assembled with the coupler body, and the compression protrusions are in contact with one end of the coupler lock in the shape of a quadrangular pyramid and serve as a compression spring, and the female coupler housing The hollow body having the same external shape as the outer shape of the coupler body, a reinforcing bar inserting portion into which the release reinforcing bar is inserted, a female socket portion into which the male coupler housing is inserted, and the coupler body to allow the coupler body to be inserted therein. A depth limiting jaw for limiting the depth to be inserted is formed, a female thread is formed in the female socket portion, and the same hollow shape as the outer shape of the coupling body is inserted into the male coupler housing so that the coupling body can be inserted therein. And, the reinforcing bar inserting portion is the rebar is inserted, and A male inserting part inserted into the female coupler housing and a depth limiting jaw limiting the depth into which the coupler body is inserted are formed, and a male screw is formed in the male inserting part, and the reinforcing bar inserting part is easy to insert the rebar. A high-strength rebar coupler having a conical shape with an outer diameter larger than the inner side diameter is disclosed.

As another conventional technique, the first and second bulkheads are formed in the center and the flanges are formed in the circumference of the first and second bulkheads. 2 First and second reinforcing bar portions formed on both sides of the body, and selectively formed on the surfaces of the first and second reinforcing bar portions, and formed by first and second support jaws supporting the ring-shaped ribs of the first and second reinforcing bars A first and second binding piece which becomes and connects the first and second reinforcing bars; And fasteners for coupling the first and second binding pieces, and the first and second partition walls of the first and second binding pieces respectively blocking the inside of the first and second bodies to the outside of the first and second bodies. It is formed in a semi-circular cross-section that does not protrude so that the ends face each other and is in contact with each other. A fastening protrusion is formed on the first partition wall of the first binding piece, and a fastening groove is formed on the second partition wall of the second binding piece, and the first, 2 As the binding piece is coupled through the fastener, a reinforcing bar coupler characterized in that the fastening protrusion is fitted into the fastening groove is disclosed.

However, the conventional coupler for reinforcing bars has an initial slip phenomenon, and the residual deformation amount does not meet the performance standards, and the adjustment of the clamping force is not easy, and the clamping time is long.

The present invention was devised to solve the above-mentioned problems, and the present invention is easy to adjust the fastening force between members of a round bar shape, such as a reinforcing bar or a pipe, and can prevent an initial slip phenomenon, so that the residual deformation amount meets the performance standards. , It is intended to provide a method for manufacturing and fastening a coupler for reinforcing bars that can shorten the jointing time and can easily and accurately manufacture knitted fabrics.

The present invention relates to a method for manufacturing and fastening a coupler for reinforcing bar reinforcing, and a hollow body-shaped fixing member 110 having threads 112 formed at both ends thereof; Disc-shaped bases 130, which are respectively inserted through hollow holes formed at both ends of the fixing member 110; It is located on the outer side of the base 130, the hollow toward the outer side is a hollow body shape having an inclined surface is formed, the knitted body 140 consisting of a plurality of divided pieces divided in the circumferential direction; As a hollow body screwed to the thread 112 of the fixing member 110, the sleeve 150 is formed with an inclined surface to correspond to the inclined surface of the knitted body 140; And the base 130 and the knitted body Between the 140 is a spring 160 is mounted as a coupler for reinforcing bars used to connect the reinforcing member,

A nut hole 111 is formed through the outer periphery of the fixing member 110 through the inside, and a pair of pressing members 180 is inserted between the pair of bases 130, but the pair of Between the pressing member 180, the wedge 120 is inserted, and when the insertion bolt 170 is inserted through the nut hole 111 of the fixing member 110, the pressing member 120 having the wedge 120 located on both sides ( By moving 180) in both directions, the knitted body 140 together with the base 131 proceeds in the direction of the narrow sleeve 150 so that the outer periphery of the reinforcing bar inserted through the hollow hole of the sleeve 150 is gripped. It is characterized by.

Therefore, the present invention is easy to adjust the fastening force between the rod-shaped members, such as reinforcing bars or pipes, and can prevent the initial slip phenomenon, so that the residual deformation amount meets the performance standards, shortens the joint time and facilitates knitting and is easy and precise. There is a remarkable effect that can be produced.

1 is an exploded view of a coupler for rebar jointing of the present invention.
Figure 2 is a combined view of the coupler for reinforcing the present invention.
Figure 3 is a schematic view of the use state of the coupler for reinforcing the present invention.
Figure 4 is a batch batch manufacturing process of the present invention
5 is a single piece manufacturing process diagram of the present invention
Figure 6 is a guide base manufacturing process diagram of the present invention
7 is a perspective view of a mini jack device for a rebar joint coupler of the present invention
Figure 8 is a side view of Figure 1
Figure 9 is a detailed view of the threaded portion for sealing the hydraulic oil of the mini-jack device for a rebar joint coupler of the present invention
Figure 10 is a detailed view of the hole processing portion for the hydraulic pump of the mini-jack device for the present invention rebar joint coupler
11 is a detailed view of the pressing process for applying force in the mini-jack device for a rebar joint coupler of the present invention
12 is a front view of the pressing process for applying a force in the mini-jack device for a rebar joint coupler of the present invention
13 is a plan view of a pressing force for applying a force in the mini-jack device for a rebar joint coupler of the present invention
Figure 14 is a cross-sectional view of the pressing process for applying a force in the mini-jack device for a rebar joint coupler of the present invention

The present invention relates to a method for manufacturing and fastening a coupler for reinforcing bar reinforcing, and a hollow body-shaped fixing member 110 having threads 112 formed at both ends thereof; Disc-shaped bases 130, which are respectively inserted through hollow holes formed at both ends of the fixing member 110; It is located on the outer side of the base 130, the hollow toward the outer side is a hollow body shape having an inclined surface is formed, the knitted body 140 consisting of a plurality of divided pieces divided in the circumferential direction; As a hollow body screwed to the thread 112 of the fixing member 110, the sleeve 150 is formed with an inclined surface to correspond to the inclined surface of the knitted body 140; And the base 130 and the knitted body Between the 140 is a spring 160 is mounted as a coupler for reinforcing bars used to connect the reinforcing member,

A nut hole 111 penetrating therein is formed on an outer periphery of the fixing member 110, and a pair of pressing members 180 is inserted between the pair of bases 130, but the pair of Between the pressing member 180, the wedge 120 is inserted, and when the insertion bolt 170 is inserted through the nut hole 111 of the fixing member 110, the pressing member 120 having the wedge 120 located on both sides ( By moving 180) in both directions, the knitted body 140 together with the base 131 proceeds in the direction of the narrow sleeve 150 so that the outer periphery of the reinforcing bar inserted through the hollow hole of the sleeve 150 is gripped. It is characterized by.

In addition, the knitted fabric 140 is characterized in that it is manufactured as a single piece or divided into a plurality of pieces to be divided into pieces.

Hereinafter, the present invention will be described in detail with reference to the attached coupler for reinforcing bars.

1 is an exploded view of a coupler for rebar jointing of the present invention, FIG. 2 is a combined view of a coupler for rebar jointing of the present invention, FIG. 3 is a schematic view of a use state of a coupler for rebar jointing of the present invention, and FIG. Figure 5 is a single piece manufacturing process diagram of the present invention, Figure 6 is a guide base manufacturing process diagram of the present invention, Figure 7 is a perspective view of the mini jack device for the present invention rebar joint coupler, Figure 8 is a side view of Figure 1, Figure 9 Is a detailed view of the screw processing part for sealing the hydraulic oil of the mini jack device for the present invention rebar joint coupler, FIG. 10 is a detailed view of the hole processing part for the hydraulic pump of the mini jack device for the present invention rebar joint coupler, and FIG. 11 is the present invention rebar joint Fig. 12 is a front view of a pressing process for applying a force in a minijack device for a coupler, Fig. 12 is a front view of a pressing process for applying a force in a minijack device for a coupler, and Fig. 13 shows a force in a minijack device for a reinforcing bar coupler according to the present invention Applying force process plan view, FIG. 14 is a cross-sectional view of the force process for applying a force in the mini jack device for a reinforcing bar joint coupler of the present invention.

The coupler of the present invention is used for the connection between the round bar members, that is, it is easy to fasten the reinforcing bars or pipes of the round bar shape, and it is possible to prevent the initial slip phenomenon, so that the residual strain amount meets the performance standards and shortens the rebar joint time. I can do it.

That is, the coupler 100 for the reinforcing bar according to the present invention includes a hollow body-shaped fixing member 110 having threads 112 at both ends thereof; Disc-shaped bases 130, which are respectively inserted through hollow holes formed at both ends of the fixing member 110; It is located on the outer side of the base 130, the hollow toward the outer side is a hollow body shape having an inclined surface is formed, the knitted body 140 consisting of a plurality of divided pieces divided in the circumferential direction; As a hollow body screwed to the thread 112 of the fixing member 110, the sleeve 150 is formed with an inclined surface to correspond to the inclined surface of the knitted body 140; And the base 130 and the knitted body Between (140) is characterized in that the spring 160 is mounted.

In particular, a nut hole 111 penetrating therein is formed on the outer periphery of the fixing member 110, and a pair of pressing members 180 is inserted between the pair of bases 130. The wedge 120 is inserted between the pair of pressing members 180.

Therefore, when the insertion bolt 170 is inserted through the nut hole 111 of the fixing member 110, the wedge 120 moves the pressing member 180 located on both sides in both directions, together with the base 131. The knitted body 140 is to grasp the outer periphery of the reinforcing bar inserted through the hollow hole of the sleeve 150 because the inner space is advanced toward the narrow sleeve 150.

Meanwhile, the wedge 120 has a triangular shape viewed from the top, and the pressing members 180 located on both sides of the wedge 120 have side surfaces facing the wedge 120, respectively. It is formed in an inclined surface to correspond to the shape.

Both sides of the crusher 120 are formed at the same angle, it is preferable to form 30 ~ 60 °.

In addition, guide protrusions (not shown) are formed on both sides of the wedge 120 toward the apex portion of the wedge 120, respectively, and guides are provided on the inclined surface of the pressing member 120 contacting the wedge 120. A guide lane groove (not shown) into which the guide protrusion is inserted is formed to correspond to the protrusion.

Therefore, the guide protrusion of the wedge 120 is inserted into the guide lane groove formed on the inclined surface of the pressing member 120, thereby stably performing linear motion.

In addition, a plurality of springs 160 are mounted between the base 130 and the knitted body 140, and the base 130 and the knitted fabric 140 are protruded on a surface facing each other to facilitate mounting of the spring 160. 131 and an insertion groove 142 are formed.

Accordingly, the spring 160 is not easily separated between the guide base 130 and the knitted body 140.

In addition, the inner periphery of the knitted body 140 is characterized in that the unevenness 141 is formed so that the friction with the outer surface of the reinforcing bar inserted into the inner hollow portion.

Accordingly, it is possible to more firmly fix the rod-shaped member inserted into the inner space of the knitted body 140 inside the sleeve 150.

On the other hand, the knitted body 140 is located inside the sleeve 150 in the shape of a hollow body, and the knitted body 140 is movable inside the sleeve 150 along the longitudinal direction of the sleeve 150.

On the inner surface of the sleeve 150, an inclined surface is formed to correspond to the inclined surface of the knitted body 140, and on the inner inlet side, a thread 151 is formed to be screwed to the thread 112 of the fixing member 110. .

Accordingly, the knitted body 140 composed of the plurality of divided pieces is able to move in the longitudinal direction of the sleeve 150 inside the sleeve 150.

At this time, since the knitted body 140 is composed of a divided piece, when the inner diameter of the sleeve 150 is located in a small portion, the circumference of the divided piece forming the knitted body 140 also becomes small, and the inside of the sleeve 150 When the diameter is located in a portion having a large inner diameter, the circumference of the divided piece forming the knitted body 140 becomes large.

That is, as the inner diameter of the knitted body 140 is formed to be small or large as it moves from the inside of the knitted fabric 140 sleeve 150 to the outside or the inner direction, a member having a round bar shape inserted into the knitted fabric 140 is formed. It can be fixed or moved.

In addition, a wrench groove 171 is formed on one surface of the insertion bolt 170 to rotate the insertion bolt 170 using a wrench.

Meanwhile, the manufacturing method of each component of the present invention is as follows.

The collet knitting method includes a batch manufacturing method of knitting and a division manufacturing method of manufacturing a plurality of pieces by dividing the knitting into individual pieces. The batch manufacturing method includes a circular bar cutting step of cutting a metal round bar to a predetermined length using a circular; Cold forging step of molding into a collet shape using a mold; An inner hole piercing step of forming an inner hole using a mold; An inner hole threading step of processing a spiral in the inner hole; Cutting step of cutting into multiple pieces using MCT, saw blade, jig; A lower hole processing step of processing a lower hole in each divided piece using an MCT and a jig; Heat treatment step of carburizing heat treatment in a needle heat treatment furnace; Trimming step of finishing trimming; consists of.

The method of manufacturing the individual divided pieces includes a circular bar cutting step of cutting a metal round bar to a predetermined length using a circular; Cold forging step of forming the collet into several pieces using a mold; A threading step of processing a spiral on the outer edge of the divided piece using a hobbing machine or a dedicated machine; A lower hole processing step of processing each split piece lower hole using an MCT and a jig; Heat treatment step of carburizing heat treatment in a needle heat treatment furnace; Trimming step of finishing trimming; consists of.

The guide base manufacturing method includes an iron plate cutting step of cutting an iron plate to a predetermined size; A primary drawing step of drawing the iron plate and drawing on the upper surface to form protrusions in which spaces are formed therein, but arranged to be arranged in left and right lozenges, respectively, according to the number of four or divided pieces on the left and right sides; A second drawing step of extending the length of the protrusion upwards; A top blanking step of cutting the upper portion of the protrusion and cutting it to expose the space portion; An inner circle blanking step of forming holes in the centers of the left and right lozenges, respectively; An outer circle blanking step of cutting and cutting in a circle including the left and right lozenges; Trimming step of finishing trimming; consists of.

The mini jack device for a reinforcing bar joint coupler includes an arm (ARM) that is a reinforcing bar coupler coupling part, a hydraulic cylinder part for moving the hydraulic cylinder pin of the arm part back and forth, a hydraulic pump part for adding hydraulic pressure to the hydraulic cylinder, and It is composed of a motor that operates a hydraulic pump.

The arm part supports the front of the horizontal bar on the lower surface of the rebar joint coupler and the front of the rebar joint coupler in front of the cradle. It is made of cylinder pins. Forward movement is achieved by hydraulic pressure, and backward movement is achieved by the restoring force of the coil spring.

In addition, the present invention, in particular, the outer diameter of the wedge portion of the reinforcing bar coupler is formed with a concave groove having a round cross-section shape, and the front end of the hydraulic cylinder pin is also formed with a round convex portion, and the hydraulic cylinder pin advances to contact the wedge of the rebar joint coupling. When the convex portion is inserted into the concave groove, the force is applied accurately without slipping.

The hydraulic cylinder pin is detachable so that the marking object is placed on the arm and marking is formed at the tip of the hydraulic cylinder pin for marking, and pressure can be applied to the marking.

In the present invention, the hydraulic force for applying the force is pressed through the hydraulic-cylindrical pin to the wedge part of the rebar joint coupling.

In the present invention, the tip of the hydraulic-cylinder pin is automatically set to the center setting, and the tip is made of spherical-ROUND, and the concave groove shape is also formed of spherical-ROUND in the wedge of the opposite rebar joint coupling.

In actual operation, as the pressing force acts on both parts, the coupler automatically moves to the center of the pin and wedge. In addition, a handle is conveniently attached to one side of the arm when used.

In the present invention, the role of a coupler for reinforcing bars that connects reinforcing bars in both directions satisfies the general and special purpose test standard target values required for tensile and compressive strength in the axial direction of the reinforcing bar after assembly with reinforcing bars in both directions. It becomes a safer building structure through a coupler that safely connects the structure. Since the present invention is a dedicated device that generates maximum hydraulic pressure with the motor's rotational force and the performance of a hydraulic pump and is pressed against the wedge of a rebar joint coupler, there is no problem such as accidentally generating a large force or damaging the coupler.

The mini jack is a tool for fastening rebar couplers, and the fastening time is about 5 seconds to 10 seconds. In fact, when using the above equipment in various construction structures and construction sites, air shortening/ supervision/ maintenance management effects can be seen. It contributes significantly to cost reduction.

By using the minijack, it is possible to perform a standardized rebar coupler operation, and a minijack can be manufactured for each rebar size.

By using the minijack, it is possible to achieve performance below the standard of residual deformation for seismic design, prevention of initial slip, and special purpose.

Particularly, when the function of the automatic center setting V-block device of the arm is described, as shown in Figs. 1 and 2, the coupler is placed on the arm's cradle (bottom), and when it is pressurized with hydraulic pressure, it is automatically through the hydraulic-cylinder pin. It is assembled by entering the V-block center.

The present invention automatically sets the force + center when assembling the V-block of the outer diameter of the rebar coupler and the arm.

The center position of the V-block of the arm is determined by considering the size and tolerance of the product with respect to the armrest (bottom), and the position of the rebar coupler is automatically set at the center of the V-block when applying force by applying force. do.

On the other hand, the present invention is another embodiment, by deeply forming the wedge groove of the clamp into which the hydraulic cylinder pin is inserted, first plugging the wedge into the hydraulic cylinder pin, and then pushing it into the clamp to facilitate the work. . After plugging in, when the hydraulic cylinder pin is retracted, the wedge is plugged into the clamp by the clamping force, and only the hydraulic cylinder pin is retracted. In addition, a plurality of engaging grooves are formed on the inner wall of the groove in a circular shape at a distance in the longitudinal direction, so that when the wedge is removed, a locking tool can be hooked to the engaging groove to retreat back. In order to prevent foreign matter from entering the groove, a water-expandable rubber can be inserted and sealed.

”형상의 홈이 형성되어 수직상방으로 판재가 형성되되 두 개의 판재가 평행하게 설치되어 두 개의 판재 사이에 상기 철근의 마디부가 철근커플러가 안치하게 한다. 판재 하부가 거치대 측면에 결합되는 것은 볼트로 체결하여 볼트의 체결길이에 따라 판재 사이의 간격이 조절되어 이형철근의 마디 사이 간격이 다르더라도 조절이 가능하게 할 수 있다.In another embodiment, a gripping portion is formed on a holder of the arm portion to grip a particularly reinforcing portion of a coupler placed in an arm portion to grip a central portion of the rebar coupler of the reinforcing bar. The gripping part allows the rebar to enter the rebar coupler on the side of the cradle.

”A shape groove is formed to form a plate in a vertical upward direction, but two plate members are installed in parallel so that the rebar coupler is placed between the two plate members. When the lower portion of the plate is coupled to the side of the cradle, the gap between the plates is adjusted according to the fastening length of the bolt, so that even if the gap between the bars of the reinforcing bar is different, it can be adjusted.

Therefore, the present invention has a remarkable effect such as easy adjustment of the fastening force between the members of the round bar shape, such as reinforcing bars or pipes, and preventing the initial slip phenomenon, so that the residual deformation amount meets the performance standards and shortens the joint time. .

100. Coupler
110. Fixing member 111. Nut hole
112. Thread
120. Wedge
130. Base 131. Protrusion
140. Plain (collet) 141. Unevenness
142.Home
150. Sleeve 151. Thread
160. Spring
170. Insert bolt 171. Wrench groove
180. Compression member
1000: arm section
1200: V-block 12: V groove
1300: Hydraulic cylinder pin
200: hydraulic cylinder (round trip)
300: hydraulic pump unit
400: DC motor part
500: handle
121: Hydraulic oil seal screw processing section 122: Hole processing section for hydraulic dampers

Claims (2)

A hollow body-shaped fixing member 110 in which a thread 112 is formed at both ends; Disc-shaped bases 130, which are respectively inserted through hollow holes formed at both ends of the fixing member 110; It is located on the outer side of the base 130, the hollow toward the outer side is a hollow body shape having an inclined surface is formed, the knitted body 140 consisting of a plurality of divided pieces divided in the circumferential direction; As a hollow body screwed to the thread 112 of the fixing member 110, the sleeve 150 is formed with an inclined surface to correspond to the inclined surface of the knitted body 140; And the base 130 and the knitted body Between the 140 is a spring 160 is mounted as a coupler for reinforcing bars used to connect the reinforcing member,
A nut hole 111 penetrating therein is formed on an outer periphery of the fixing member 110, and a pair of pressing members 180 is inserted between the pair of bases 130, but the pair of Between the pressing member 180, the wedge 120 is inserted, and when the insertion bolt 170 is inserted through the nut hole 111 of the fixing member 110, the pressing member 120 having the wedge 120 located on both sides ( By moving 180) in both directions, the knitted body 140 together with the base 131 proceeds in the direction of the narrow sleeve 150 so that the outer periphery of the reinforcing bar inserted through the hollow hole of the sleeve 150 is gripped. Method for manufacturing and fastening a coupler for reinforcing bars, characterized in that.
The method for manufacturing and fastening a coupler for reinforcing bar joints according to claim 1, wherein the knitted fabric (140) is manufactured in one piece or divided into a plurality of divided pieces.

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