KR102293834B1 - Openable compressor for joing reinforcing rod - Google Patents

Abstract

The present invention relates to a reinforcing presser for connecting rebar, and more particularly, by easily performing rebar connection even within a narrow space between the protrusions of reinforcing bars at a construction site in an industrial field, such as a construction site such as a bridge, shortening the construction period. Possible retractable presses. The compression machine according to the present invention adopts a tube compression connection method in order to improve on-site constructability including speed, safety, convenience and efficiency of construction in the construction process of civil engineering so that the reinforcing bar to be reinforced can receive both compressive and tensile forces at the same time. And, there are technical features in that each of the reinforcing bars exhibited uniform and constant performance, and the point was designed to efficiently connect reinforcing bars within a narrow working space. It is possible to construct and work with a small number of people, and it can provide various advantages such as shortening the construction period dramatically and reducing costs due to the simple construction.

Description

Openable compressor for joining reinforcing rod}

The present invention relates to a rebar connection type pressing machine, and more particularly, in a construction site such as a construction site such as a bridge, the reinforcing bar connection work is easily performed even within a narrow space between the protrusions of the reinforcing bars, and various advantages such as shortening of the construction period It relates to a retractable rebar compactor that provides

In general, reinforcing bars are used to reinforce the strength of structures by being placed inside the concrete when constructing concrete structures in the field of architecture or civil engineering. It is used after being laid out. In other words, since rebars are standardized and produced with a certain length in the manufacturing stage, in the case of large buildings, special structures, and civil structures such as bridges, rebars produced with a limited length are connected to each other and used. It is broadly classified into methods such as lamination, welding, threading, and mechanical jointing.

Here, the lap splicing is a method of overlapping reinforcing bars to a predetermined length and tying them with wire or wire. There are disadvantages, and the welding joint is cumbersome to construct, and since the welding part is heated, the strength of the reinforcing bar around the welded part is significantly weakened due to the heat.

A mechanical joint method was developed to compensate for the above disadvantages, but after inserting the rebar into the rebar coupler at the site and fixing it by pressing, the rebar coupler is connected to each other by screwing. This was followed by a rather tricky, time-consuming and costly problem.

That is, after inserting the reinforcing bar coupler into the end of the reinforcing bar, it is fixed by putting it into the press device and pressing it. In addition, the reinforcing bar coupler failed to firmly bind the reinforcing bars, which resulted in the detachment during use.

Accordingly, in order to solve the above problem, the auxiliary bush is used to support the reinforcing bar to be positioned on the same axis as the reinforcing bar coupler. As it had to be assembled, the work process was complicated and cumbersome.

However, as disclosed in Korean Patent Application Laid-Open No. 10-1999-015020 (Document 1), the conventional compression device has a uniform structure in which the mold body for pressing the sleeve is integrally formed with the body generating hydraulic pressure, As a uniform and simple crimping device is used irrespective of the thickness (pie) or sleeve type of rebar applied to the construction site, there is a problem in that there is a limit in providing a stronger and stronger reinforcing bar binding.

In addition, since the conventional crimping device is inconvenient to use in a limited space and has poor on-site workability, there is a need for an improved rebar press for field construction because there is a limit to shortening the period.

Korean Patent Laid-Open Publication No. 10-1999-015020 (March 05, 1999) Korean Patent Publication No. 10-2011-0017551 (February 22, 2011) Korean Patent Registration No. 10-0952515 (April 05, 2010)

As a result of intensive research to solve the problems of the prior art as described above and to develop a more improved rebar press for on-site construction, the present inventors have made an open/closed press having a structure as described below, thereby efficiently binding reinforcing bars even in a narrow space. By doing this, it was discovered that the construction efficiency of the civil structure can be improved and the construction period can be shortened to reduce the cost, and thus the present invention has been completed.

Accordingly, an object of the present invention is, in one aspect, by improving the construction efficiency of civil structures by efficiently binding reinforcing bars even in a narrow space in which rebars are densely arranged, such as in a pier structure, the construction period can be shortened and costs can be reduced. To provide a rebar compactor.

An object of the present invention is, in a further aspect, the compression force of the reinforcement reinforced by adopting a tube compression connection method for the reinforcement reinforcement in a civil structure in order to improve on-site construction properties including construction speed, safety, convenience and efficiency. It is to provide a reinforcing rebar compactor that can receive and tensile force at the same time, exhibit uniform and constant performance of each reinforcing bar, and efficiently connect reinforcing bars within a narrow working space.

The above object of the present invention is

a cylinder housing accommodating the piston and the piston guide partition wall and providing a coupling space for the opening/closing tube fixing part;

a piston guide bulkhead partitioned inside the cylinder housing to accommodate the piston and provided at one side with a hole for the passage of hydraulic pressure to guide the movement of the piston;

a piston whose one end is exposed to the outside while sliding up and down by hydraulic pressure inside the piston guide bulkhead;

a semi-circular compression mold for pressing the tube accommodating both ends of the reinforcing bar by the pressure of the piston, which is installed to be seated on the inside of the front surface of the cylinder housing and the inside of the tube fixing part, respectively;

a tube fixing unit having a semi-circular shape and having a compression mold placed therein, one end is hinged to the housing to provide a rotation shaft, and the other end is a tube fixing unit that is opened and closed by being pinned in a pin coupling unit installed on the front side of the housing;

a hydraulic hose connected to the piston guide bulkhead to supply hydraulic pressure;

a hydraulic unit connected to the hydraulic hose to provide hydraulic pressure;

a push button connected to the hydraulic unit to control the supply of hydraulic pressure; and

It can be achieved by a reinforcing bar press, characterized in that consisting of; a handle provided on the outside of the housing.

The reinforcing bar press according to the present invention adopts a tube compression connection method in order to improve on-site workability including construction speed, safety, convenience and efficiency in the construction process of civil engineering, so that the reinforcing bar to be reinforced receives both compressive and tensile forces. There are technical characteristics in that each of the reinforcing bars exhibited uniform and constant performance, and the point was designed to efficiently connect rebars in a narrow working space, and by these features, narrow work compared to the prior art It can be installed in a space, can be operated with a small number of people, and can provide various advantages such as shortening the construction period dramatically due to the simple construction and reducing the cost.

1 is a view for explaining the structure and operating relationship of the retractable press according to the present invention;
Figure 2 is a view for explaining the type of the reinforcing bar mounting mold;
3 is a view for explaining the operating relationship of the retractable press according to the present invention;
4 is a front explanatory view of a precast segment;
Fig. 5 is an explanatory top perspective view of the precast segment according to Fig. 4;
6 and 7 are views for explaining a reinforcing bar connection process between segments.

The present invention, in one aspect,

a cylinder housing accommodating the piston and the piston guide partition wall and providing a coupling space for the opening/closing tube fixing part;

a piston guide bulkhead partitioned inside the cylinder housing to accommodate the piston and provided at one side with a hole for the passage of hydraulic pressure to guide the movement of the piston;

a piston whose one end is exposed to the outside while sliding up and down by hydraulic pressure inside the piston guide bulkhead;

A semi-circular compression mold for pressing the tube accommodating both ends of the reinforcing bar by the pressure of the piston, which is installed to be seated in the front inside of the cylinder housing (or the exposed end of the piston) and the inside of the tube fixing part, respectively;

a tube fixing unit having a semi-circular shape and having a compression mold placed therein, one end is hinged to the housing to provide a rotation shaft, and the other end is a tube fixing unit that is opened and closed by being pinned in a pin coupling unit installed on the front side of the housing;

a hydraulic hose connected to the piston guide bulkhead to supply hydraulic pressure;

a hydraulic unit connected to the hydraulic hose to provide hydraulic pressure;

a push button connected to the hydraulic unit to control the supply of hydraulic pressure; and

It provides an openable and closed press comprising a handle portion provided on the outside of the housing.

Hereinafter, the overall configuration and operation of the reinforcing bar press according to the present invention will be described in detail with reference to the accompanying drawings.

The terms or words used in the present specification and claims are not to be construed as limited in their ordinary or dictionary meanings, and on the principle that the inventor can appropriately define the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, since the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, it is understood that there may be various equivalents and modifications that can be substituted for them at the time of the present application. shall.

1 is a view for explaining the structure and operation relationship of the rebar press according to the present invention, Figure 2 is a view for explaining the type of mold for mounting reinforcing bars, Figure 3 is a view for explaining the operating relationship of the rebar press according to the present invention FIG. 4 is a front explanatory view of the precast segment, FIG. 5 is an upper perspective explanatory view of the precast segment according to FIG. 4, and FIGS. 6 and 7 are views for explaining a reinforcing bar connection process between segments.

1 to 7, the reinforcing bar press according to the present invention can be particularly conveniently used for connecting rebars in a narrow space during the construction of civil works such as bridges.

In order to improve on-site workability including construction speed, safety, convenience and efficiency in the construction process of civil engineering by using such a presser, the reinforcing bar reinforced by adopting a tube compression connection method can receive equal compression and tensile force at the same time. There are technical features in that each of the reinforcing bars exhibits uniform and constant performance, and the point is designed to efficiently connect rebars in a narrow working space, and by these features, narrow work compared to the prior art It can be installed in a space, can be operated with a small number of people, and can provide various advantages such as shortening the construction period dramatically due to the simple construction and reducing the cost.

In addition, the reinforcing bar compactor according to the present invention is wire-connected by a crane so that it can work without a load, and is specially designed to perform rebar connection work within a narrow space formed between structures such as precast segments. It is characterized in that it consists of an openable structure so that the tube 204 can be gripped.

In particular, the reinforcing type tube press for connecting reinforcing bars according to the present invention can be used more suitably for construction work for connecting reinforcing bars in the structure of the precast segment 210 as specifically shown in FIGS. 4 and 5 .

The precast segment 210 may be formed in a polygonal shape such as a cylindrical shape, a quadrilateral, a hexagonal shape, an octagonal shape, and a rounded rectangle, but in the present invention, a typical cylindrical shape will be described.

The precast segment 210 as above secures a minimum working space for the ease of rebar connection work, the convenience of a space structure that can install a working scaffold inside the segment during rebar connection work, and at the same time, the rigidity of rebar work and concrete filling City concrete needs to have a unique structure that is easily filled.

This precast segment 210 has a basic structure of a cylindrical shape having a certain thickness and width except for the upper and lower parts, in which the reinforcing bar 201 is reinforced along the outer edge, and is manufactured in a factory and transported to the field to form a columnar part. Compared to the case of in-situ casting, it is possible to effectively shorten the construction period.

In addition, the precast segment 210 is arranged so that the reinforced reinforcing bar 201 is closest to the outside of the segment structure, and the periphery of the reinforcing bar is reinforced as firmly as possible within the technically possible range to give the strength of the precast segment. At the same time, when reinforcing bars along the edge of the segment in two rows in the precast structure in order to provide efficiency and speed of work including connecting reinforcing bars, the upper and lower segments of the segment are arranged to secure space for reinforcing work around the outer reinforcing bars. As for the end shape, it may be desirable to form a structure in which concave and convex portions are repeated in plan view, more preferably a structure in which concave portions and convex portions are repeated in a round shape, or a structure composed of a sine wave-like waveform shape 216 is formed. .

Such a wavy shape can maximize the strength of the segment structure within the range where the connection between the protrusions of the reinforcing bars is possible, and at the same time provide the convenience of the tube compression type rebar connection work and the structural stability when the segments are stacked.

More specifically, the outer reinforcing bars 201, to which a certain number of reinforcement is provided, are reinforced so that the upper and lower ends protrude regularly along the outer edge of the segment when viewed in a plan view, thereby imparting the strength of the segment.

The protrusion 202 of the reinforcing bar 201 is formed to protrude to a predetermined length on the upper flat surface 213 forming a working space for connecting the reinforcing bars to the lower portion of the segment 220 of the same shape.

Similarly, the lower protrusion 203 of the reinforcing bar 201 protrudes to a predetermined length so that the connection between the protrusions by the tube 204 is possible.

The upper and lower protrusions 202 and 203 of the reinforcing bars are connected by a rebar connection operation, and it is necessary to secure a certain space around the outer reinforcing bars 201 for compressing the reinforcing bars.

When the structure of the segment is designed to secure a fairly large space around the protrusions 202 and 203 of the reinforcing bar 201 for the reinforcing bar compression operation, there is a fear that the strength of the segment structure itself may not be secured.

On the other hand, even if such a space is secured, it is very inefficient to perform a compression operation using a connection part by a conventional manual operation.

Therefore, it is necessary to secure only a minimum space for compressing the rebar within the range in which the strength of the precast segment is secured. is needed

As a result of considering this connection work space, a minimum space is secured around the reinforcing bar 201, and the remaining part is poured with concrete to realize a structure with stable segment strength during segment lamination by a crane. The structure in which only the periphery of is exposed (that is, the width of the segment becomes the narrowest in the periphery with reinforcement, and the widest in the periphery without reinforcement) is repeated, so that when viewed in a plan view, the concave and convex portions are rounded. It may be desirable to form a structure consisting of a heavily repeating structure or a wave shape similar to a sine wave.

In the structure of the upper end of the segment 210 , a certain space must be secured to facilitate work by a presser using the tube 204 , so that the outer wall protrusion 215 having a flat surface protrudes to a certain length. A lower portion of another segment 200 having a structure corresponding to an upper portion of the surface of the outer wall protrusion 215 is stacked.

The face of the outer wall protrusion 215 has a wavy shape 216 to provide a large area as possible to provide a stable stacking area of the precast segments.

The inner wall 214 of the upper outer wall protrusion 215 may be formed to be inclined rather than a right angle in order to further impart strength to the segment.

The inner edge 212 defines the thickness of the precast segment 210 and the length of the outer wall protrusion 215 and provides an installation space for the reinforcing and inner working scaffold 400 .

The inner wall 211 of the precast segment is integrally formed with the inside of the cylindrical segment, and the inner edge 212 is formed at a right angle for the reinforcement connection work and the installation of the work scaffold 400 to provide an upper plane 213 and The lower edge 217 is inclined to have a structure that facilitates concrete filling operation.

Therefore, it is preferable that the lower portion of the segment 210 has the same structure as the upper portion, but the lower edge 217 is formed at a predetermined angle to facilitate rebar connection work and concrete filling work.

That is, the lower edge 217 and the edge 218 of the lower flat surface are inclined to provide a reinforcing bar work space and ease of filling the concrete.

Similarly, the lower outer wall protrusion 219 is formed to be inclined in order to further provide strength for the stacking of segments, and is preferably formed in a wavy structure as described above on the bottom surface.

The edge 218 of the lower flat surface may be preferably formed near the midpoint of the reinforcing bars 201 of the second row to be reinforced.

The precast segment 210 having such a unique structure may be preferably formed in various lengths (heights) according to the construction purpose of the rebar connection work.

The reinforcing bar press 100 of the present invention suitable for the reinforcing bar connection work of these precast segments is

Cylinder housing 110 for accommodating the piston 130 and the piston guide partition wall 120 and providing a coupling space for the opening and closing tube fixing unit 140;

a piston guide bulkhead 120 partitioned inside the cylinder housing 110 to accommodate the piston 130 and provided at one side with a hole for the passage of hydraulic pressure to guide the movement of the piston 130;

a piston 130 having one end exposed to the outside while sliding up and down by hydraulic pressure inside the piston guide partition wall 120;

A semi-circular compression mold for pressing the tube 204 that is seated and installed inside the front inside of the cylinder housing 110 and the tube fixing part 140, respectively, and accommodates both ends of the reinforcing bar by the pressure of the piston 130 (150);

It is made in a semi-circular shape and the compression mold 140 is placed therein, one end provides a hinge rotation shaft to the housing 110, and the other end is the upper part of the housing 110 (as a reference when viewed in a plan view, the front side for convenience) a tube fixing part 140 that is opened and closed by a pin coupling in the pin coupling part 111 installed in the unit;

a hydraulic hose 160 connected to the piston guide bulkhead 120 to supply hydraulic pressure;

a hydraulic unit 170 connected to the hydraulic hose 160 to provide hydraulic pressure;

a push button 180 connected to the hydraulic unit 170 to control the supply of hydraulic pressure; and

It characterized in that it consists of; a handle part provided on the outside of the housing.

The cylinder housing 110 accommodates the piston guide bulkhead 120 and the piston 130, and provides a coupling of the retractable tube fixing part 140 to perform compression of the tube 204, and the upper end is approximately semicircular. It is configured in the shape of a round "Y"-shaped tongs to form a space for accommodating the tube 204 when the retractable tube fixing unit 140 is coupled.

A piston guide partition wall 120 for guiding the vertical movement of the piston 130 is partitioned inside the housing 110 to accommodate the piston 130 , and a hole for oil penetration is provided at the entrance of the piston guide partition wall 120 . It is provided on the side (not shown) to provide a space for the piston 130 to move back and forth when hydraulic pressure is provided.

On the other hand, the inner side of the piston guide bulkhead 120 is provided with a spring 121 for inducing the piston to move backward, so that the piston 130 is returned by its own weight when hydraulic pressure is released.

The piston 130 has a general structure in which a head and a rod are integrally formed, and a sealing member including an O-ring, a seal, a packing, etc. installed on the outer periphery of the head is omitted for convenience.

The piston 130 is accommodated in the piston guide bulkhead 120, and slides up and down (standard in plan view, also referred to as front and back for convenience) by hydraulic pressure, and one end of the piston guide bulkhead 120 ) and the housing 110 is exposed to the outside. One end (upper end) of the exposed piston 130 pushes the compression mold 150 to provide a compression force.

The outside of the piston 130 may further include a guide frame or a gasket to further secure the supply of hydraulic pressure and prevent leakage of hydraulic pressure.

For stable seating of the compression mold 150 , it may be preferable that a mold coupling part or a separation preventing means are provided inside the end of the piston 130 and the tube fixing part 140 .

More specifically, the exposed end of the piston 130 is formed with a protrusion for coupling with the compression mold 150, and a groove portion for accommodating the protrusion is formed on the rear surface of the compression mold 150, so that the compression mold ( 150) can be stably attached to and detached from the piston 130. The protrusion and the groove do not need to be formed in a structure by screw coupling. Similarly, the tube fixing unit 140 needs to be formed with a protrusion of the same shape.

In addition, it may be more preferable that guide grooves for the front and rear movement of the compression mold 150 are horizontally formed on both sides of the front inside of the cylinder housing 110 . Similarly, the side portion of the compression mold 150 may preferably be provided with a guide corresponding to the guide groove.

The retractable tube fixing part 140 has a semicircular shape, and one end is hinged through a hinge coupling part 142 at the upper part of the housing 110 to provide a rotation shaft, and the other end is a pin coupling hole 141 through a pin coupling hole 141 . It is pin-coupled to the pin coupling part 111 installed in the upper part of the other side of the housing 110 and is fastened so as to be able to open and close.

It may be more preferable that the pin coupling part 111 is coupled to and separated from the housing in a one-touch manner.

In addition, the opening/closing fixing unit 140 may be configured to operate in an electrical manner by a push button 180 to be described later.

A semi-circular compression mold 150 is stably seated and installed inside the front part of the piston in the housing 110 and the opening and closing tube fixing part 140 , and both ends of the reinforcing bar are accommodated by the pressure of the piston 130 . One tube 204 is compressed.

The compression mold 150 for pressing the tube 204 in the state of interposing the reinforcing bar protrusions of the upper and lower precast segments is composed of two corresponding sets, each of which has a semi-circular shape inside, but the size of the semi-circle is of various diameters. It is preferable to have various types of structures capable of compressing the reinforcing bars.

As shown in FIG. 2, it can be constructed by varying the inner diameter size of the mold to hold reinforcing bars and tubes of various diameters. The diameter of the reinforcing bar may vary depending on the construction purpose of the civil works. For example, if there is a construction section with a rebar diameter of 25mm and a construction section with a rebar diameter of 19mm, the rebar connection work can be performed without delay by replacing only the mold.

In addition, the compression surface of the compression mold 150 accommodates the tube 204 for connecting reinforcing bars, but may be formed in various concavo-convex shapes.

The hydraulic hose 160 is connected to the piston guide bulkhead 120 to supply hydraulic pressure through the hydraulic supply hole, and the hydraulic unit 170 is connected to the hydraulic hose 160 to provide hydraulic pressure.

The push button 180 is connected to the hydraulic unit 170 to control the operation of the hydraulic press.

In addition, although not shown in the drawings, a lug for connecting a wire operated by a handle or a crane is attached to the upper portion of the outer side of the housing, so that it may be preferable to perform the reinforcing bar connection work without the load of the press.

When the operation of the reinforcing rebar press 100 according to the present invention having the above structure is described in relation to the connection operation of the reinforcing bar protruding to the precast segment,

First, the precast segment 210 manufactured and transported at the factory is stacked and positioned using a crane on the pre-cast base, and the pin coupling of the retractable tube fixing unit 140 of the presser 100 connected to the crane is In a state where the tube fixing part 140 of the presser 100 is released and the end of the tube fixing part 140 is opened, the tube fixing part 140 is pinned in a state that it is pushed up to the inner surface 214 of the segment and the tube 104 containing the reinforcing bar is wrapped. When the push button 180 is operated upward after locking by 130 moves forward to compress the tube 204 , and when the push button 180 is operated in the downward direction, the hydraulic pressure is released and the compression is released by the weight of the spring 121 . Then, the reinforcing bar connection work is performed in a simple manner by pressing the protrusion of the other reinforcing bar after releasing the pin coupling. Reinforcement connection work of the column part can be performed similarly.

The reinforcing bar compactor 100 may be preferably operated by hanging on a crane to reduce the load.

By using the pressing machine according to the present invention as described above, not only can the reinforcing bar be easily compressed in a narrow space such as between precast segments, but also the end or the protrusion of the reinforcing bar is bound according to the thickness of the reinforcing bar and the type of compression tube applied. This has the advantage of improving constructability and workability.

As described above, although the present invention has been described with reference to the limited examples and drawings, the present invention is not limited to the above examples, which are various modifications and Transformation is possible. Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalents or equivalent modifications thereof will fall within the scope of the spirit of the present invention.

100: press
110: cylinder housing
120: piston guide bulkhead
130: piston
140: retractable tube fixing part
150: crimping mold
160: hydraulic hose
170: hydraulic unit
180: push button
210, 220, 230: precast segment
202, 203: protrusions
204: tube
211: inner wall
212: inner edge
213: upper flat surface
214: inner wall
215: outer wall protrusion
216: waveform shape
217: bottom edge
218: flat surface edge
219: outer wall protrusion

Claims (4)

a cylinder housing accommodating the piston and the piston guide partition wall and providing a coupling space for the opening/closing tube fixing part;
a piston guide bulkhead partitioned inside the cylinder housing to accommodate the piston and provided at one side with a hole for the passage of hydraulic pressure to guide the movement of the piston;
a piston whose one end is exposed to the outside while sliding up and down by hydraulic pressure inside the piston guide bulkhead;
a semi-circular compression mold installed to be seated on the inside of the front surface of the cylinder housing and the inside of the tube fixing part, respectively, and for compressing the tube accommodating both ends of the reinforcing bar by the pressure of the piston;
An opening and closing type tube fixing part made of a semicircular shape and having a compression mold placed therein, one end is hinged to the housing to provide a rotation shaft, and the other end is pin-coupled in a pin coupling part installed on the upper part of the housing to open and close;
a hydraulic hose connected to the piston guide bulkhead to supply hydraulic pressure;
a hydraulic unit connected to the hydraulic hose to provide hydraulic pressure;
a push button connected to the hydraulic unit to control the supply of hydraulic pressure; and
A handle portion provided on the outside of the housing; consists of,
A spring for inducing the piston to move backward is provided inside the piston guide partition wall,
The upper end of the housing is formed in the shape of a "Y"-shaped claw rounded in a semicircle to form a space for accommodating the tube when the retractable tube fixing part is coupled,
An open/close rebar compactor, characterized in that it is used for connecting reinforcing bars in a narrow space on a precast segment by a tube crimp connection method. delete The method according to claim 1
In addition, a lug for connecting the wire operated by the crane is attached to the upper part, characterized in that the reinforcing rebar compactor. delete

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