KR20110125834A - Folding and unfolding apparatus of steel form for constructing a lined tunnel - Google Patents

Abstract

PURPOSE: A removable apparatus of a steel mold is provided to support a hydraulic cylinder by a supporting arm without the separation of a jack bolt. CONSTITUTION: A removable apparatus of a steel mold comprises a supporting arm(10) and a hydraulic cylinder(50). The supporting arm comprises a first connection(101), a second connection(109) and a joint(15). The first connection is hinge-connected with a central body. The hydraulic cylinder comprises a joint connection(51) and a central body connection(53). The joint connection is hinge-connected with the supporting arm. The central body connection is hinge-connected with the central body.

Description

Removable device for steel formwork {FOLDING AND UNFOLDING APPARATUS OF STEEL FORM FOR CONSTRUCTING A LINED TUNNEL}

The present invention relates to a device for attaching and detaching the side formwork of the steel formwork for the tunnel, and in particular, the side formwork is automatically set and demolded only by a structure organically connecting the hydraulic cylinder and the brace arm without using a conventional manual jack bolt. It relates to a device that can be.

In general, in order to construct a circular tunnel, a center body of a size suitable for a construction unit is manufactured by using H-beams, and formwork is installed in the upper and side portions of the center body to fit the shape of the ceiling and the wall of the tunnel. As it moves, it is a continuous construction in the longitudinal direction of the tunnel.

At this time, it is efficient to use the mold as it is, without dismantling it, so that the formwork is provided to move the formwork on the rail, and the upper formwork for constructing the tunnel ceiling is set by raising and lowering the entire formwork. Elevating means are installed on the formwork for the (wearing) and demoulding, and the side formwork for the construction of the tunnel wall is connected to the top formwork and the hinge, and then expanded and folded like bird wings using jack bolts. The way it is.

Utility Model Publication No. "Silver 194-0006421" (the name of the draft; formwork for the tunnel), the inventor; Ki-Chul Yoon shows such a typical form of steel formwork for tunnels. As a rail 22 (hereinafter referred to in the prior art reference) and a rolling wheel 25 and the like, the upper cylinder (upper wales) by installing the hydraulic cylinder 31 to the lower portion of the center body as a lifting means ), And the side formwork (side wale material) allows the bolts (15) to be loosened or tightened by hand to loosen or tighten the jack bolt (15).

However, most of the related technologies disclosed at present, like the devising of the above-mentioned GI, are manually expanding and removing the side molds using jack bolts, or even using some hydraulic cylinders, using hydraulic cylinders only when mounting or demoulding. A jack bolt is used as a support means for sustaining the test pressure (see Registration Nos. 20-0412578, Figs. 2 and 3).

However, in the structure as described above, a number of jack bolts should be installed in various ways with different heights and positions. The jack bolts need to be reduced or extended by fastening the fastener nuts with a hammer. There is a lot of problems. In particular, when a narrow structure such as an emergency evacuation tunnel crossing a tunnel is constructed, the working space is also narrow, which makes the hammer work very inconvenient.

If so, it is also conceivable to use a hydraulic cylinder, such as the Republic of Korea Patent Publication No. 10-2009-0111178 (name of the invention; sidework of the tunnel lining foam, the inventor; Yujin Oh et al.) To remove the sidework.

In this case, however, the manufacturing cost is high and the apparatus is complicated, in particular, a separate device for uniformly operating a plurality of hydraulic cylinders is required. Thus, the present inventors came to the present invention to solve the above problems.

Patent Registration (B1) 10-0200333 (KR) Published Patent Publication (A) 2002-0066835 (KR) Published Patent Publication (A) 2009-0111178 (KR) Utility Model Publication (Y1) 1994-0006421 (KR) Utility Model Publication (Y1) 1995-0007897 (KR) Utility Model Registration (Y1) 20-0412578 (KR) Public utility model bulletin (U) 20-2008-0004247 (KR)

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In order to solve the problems of the prior art, the present invention is to provide a side form detachable device that can be operated and supported only by a brace arm that is interlocked with a hydraulic cylinder without using a jack bolt by hand as a support or detachment means.

Still another object of the present invention is to provide a detachable device of a side formwork which can be operated and supported with only a minimum hydraulic cylinder.

Still another object of the present invention is to provide a detachable device of a side formwork having a simple and economical structure in which a work is fast and convenient and a function is also secured.

 The present invention allows the top formwork (3) and the side formwork (7) connected by the top formwork and the hinge shaft (5) installed on the upper portion of the central body (1) provided with the lifting means and the moving means can be folded in the wing shape. It is used as the side formwork detachable device 9 of the constructed steel formwork for tunnel construction.

Basic structure of the present invention for achieving the above object is composed of a brace arm 10 and the hydraulic cylinder 50, the brace arm is one end of the first connecting portion 101 is hinged to the central body (1) Wow; The other end has a second connector 109 hinged to the side formwork 7; And a joint portion 15 hinged to a central portion, wherein the hydraulic cylinder includes: a joint portion 51 hinged to the joint portion 15 of the brace arm; It is composed of; a central body connecting portion 53 hingedly connected with the central body at the other end.

In the present invention, it is preferable to further install another auxiliary support arm 20 having the same structure as the support arm 10. In this case, the means for connecting the brace arm is an arm connector 30, the arm connector 30 is the first shaft connecting portion 301 hinged to the brace arm joint portion 15; and the joint portion 25 of the auxiliary brace arm And a second shaft connecting portion 303 hingedly connected thereto.

In this case, the first shaft connection hingedly connects the brace arm joint part 15 and the first shaft connector 301 of the arm connector 30, and the joint part 25 and the second shaft connector 303 of the auxiliary brace arm are connected to each other. A second shaft connection hingedly connected; One is 'hole connection' so that the joint axis of the brace arm does not move during operation, and the other is 'hole connection' with constant play so that the brace arm joint axis moves in all directions during operation.

The above-described device is a unit device, and when the unit device is installed in the side formwork of the steel formwork, it is preferable to operate the same time by connecting a plurality of arms to as few hydraulic cylinders as possible. Additionally used.

For example, in the case of configuring the unit device with one brace arm 10, the device connecting rod 40 is moved between the hydraulic cylinder 50 and the joint shaft 105 of the brace arm in the longitudinal direction of the center body (the progression of the tunnel wall surface). Direction), wherein the upper portion of the apparatus connecting rod 40 is hingedly connected to the joint connecting portion 51 of the hydraulic cylinder of the few, the lower portion of the apparatus connecting rod joint shaft 105 of the hydraulic cylinder and the plurality of brace arm And fixed connection or hinge connection.

However, when the auxiliary brace arm 20 is additionally configured, the device connecting rod 40 is further installed in the longitudinal direction of the center body between the hydraulic cylinder 50 and the joint shaft 205 of the auxiliary brace arm. The hinge connecting the upper portion of the connecting table 40 and the joint connector 51 of the plurality of hydraulic cylinders is the same, but the lower portion of the device connecting table 40 is fixedly connected to the upper end of the plurality of arm connecting table 20.

In the case of adding two or more auxiliary brace arm 20, the upper end of the arm connector (30) is extended 'long connection' to the extended arm connector, the upper end of the arm connector may be fixed to the lower device connector.

Application of the present invention consisting of a brace arm and a hydraulic cylinder, the conventional jack bolt is unnecessary and can withstand the side pressure when worn as well as the removable type can be adjusted by the hydraulic cylinder.

In addition, by connecting the brace arm structure with the device connection, it is possible to operate a plurality of brace arm structure at the same time with a minimum hydraulic cylinder, it is economical because the work convenience and work time is shortened and the manufacturing cost is low.

1 is a front view of a steel formwork is installed the device of the present invention
Figure 2 is a perspective view of the present invention separated device
Figure 3 is an exploded perspective view of the device of the present invention
Figure 4 (a) is demolding, (b) is an enlarged view of the second shaft hole when wearing
Figure 5 is a side view of the steel formwork is installed device of the present invention

In order to more clearly explain the concept of the present invention, specific embodiments will be described with reference to the drawings.

1 is a front view of a steel formwork for tunnel construction the present invention is installed. The central body 1 is manufactured by using H-beams of several specifications. The upper formwork 3 is formed in an arc shape according to the shape of the upper surface of the tunnel, and the side formwork 7 is hinged on both sides of the central body. (5) is connected to the upper formwork (3) to take the shape of a wing, between the central body (1) and the side formwork (7), the side form detachable device of the present invention in a place corresponding to both sides of the formwork ) Is installed.

 Lifting means (L) and the moving means of the rail (R), rolling wheel (W) and the formwork moving hydraulic cylinder (M) to which the present invention is applied is disclosed in the side view of FIG.

Referring back to FIG. 1, the present invention (9) is connected to the hinge axis to one end of the hydraulic cylinder (50) rotatably on the lower armpit beam bottom inside the formwork center, the other end of the cylinder brace arm It is hinged to the top of the device connector 40 (which is well seen in FIG. 5) for connecting them.

Under the device connecting unit 40, both ends of the auxiliary brace arm 20 and the brace arm 10 are hinged to one side of the central body 1, the other side of the side formwork 7, the center of the brace arm The upper end of the arm connector 30 hinged to the joint connected to the hinge is coupled to the bottom of the device connector 40 with a screw.

The structure of the present invention can be seen in detail with reference to Figs.

The present invention is largely composed of the brace arm (10, 20) and the arm connecting rod 30 and the device connecting rod 40 and the hydraulic cylinder.

The brace arm 10 includes a first connection hole 101 whose one end is connected to the central body 1 by a hinge axis; The other end has a second connecting hole 109 connected to the side formwork 7 and the hinge shaft; The central portion is composed of a joint portion 15 hinged to the joint axis 105 in the joint hole (103, 107). Auxiliary brace arm 20 is also the same.

Arm connector 30 is a means for connecting the brace arm 10 and the auxiliary brace 20 to form a first shaft hole 301 at one end to fit the joint shaft 105 of the brace arm, the other At the end, the second shaft hole 303 was formed to connect the joint shaft 205 of the auxiliary brace arm by hinge.

However, the first shaft hole 301 of the arm connector 30 is a hole with a minimum of play so that the brace arm joint shaft 105 does not move during operation, the second shaft hole 303 is a joint of the auxiliary brace arm during operation The shaft 205 was formed as a long hole with a constant play so that it can move in all directions.

Differently forming the first shaft hole 301 and the second shaft hole 303 of the arm connecting rod is a side hole (7) is rotated about the hinge axis (5) to be worn or removed, so only any one of the shaft hole This is because they should be combined and the rest should be long hole coupling so that they do not interfere with each other in operation.

 In this case, it is less expensive to use the coupling between the brace arm (10) and the arm connector located farthest from the hinge shaft (5), so that a small capacity hydraulic cylinder can be used and economical and easily secured. Can be.

The method of forming the long hole in the long hole coupling is when the hole-joined brace arm moves with the arm joint from the demold position to the seated position, while the shaft in the long hole in the long hole does not interfere with the operation of the hole coupling. Calculate the trajectory moving until it is formed.

The device connecting table 40 is an H beam installed in the longitudinal direction of the central body side between the hydraulic cylinder 50 and the joint shaft 205 of the auxiliary brace arm as shown in FIGS. 2 and 5. The upper part of the device connecting unit 40 is connected to the joints 51 of the two hydraulic cylinders 50 installed in the horizontal beam beams on the front and rear portions of the central body 1 side, the lower portion is connected to the upper end of the four arm connecting unit 20 It was.

Reference numeral 9 of FIG. 5 is a portion in which the hydraulic cylinder 50 is mounted, and 9 'is a portion in which only the brace arm structure is connected to the device connecting rod 40 without the hydraulic cylinder. It is most preferable that the hydraulic cylinder is connected to the center connecting portion to the bottom surface of the upper beam beam, as shown in FIG. This is because the installation on the upper beam beam is the direction where the working space is secured in the formwork and the hydraulic cylinder force crosses the direction perpendicular to the side pressure acting on the side formwork. Because.

However, it is not excluded from the scope of the present invention that the connection portion at one end of the central body of the hydraulic cylinder is located at the side or the other side of the central body rather than the upper portion.

Although not attached to the drawings, the present invention includes a side form detachable device composed of only one support arm and a hydraulic cylinder. In this case, one end of the hydraulic cylinder is hinged to the central body, the other end is hinged to the joint portion of the brace arm.

When connecting the device connecting rod to the structure of one brace arm, the upper portion of the device connecting rod 40 is hingedly connected to the joint connecting portion 51 of the hydraulic cylinder, the lower portion of the device connecting rod and the joint portion 15 of the brace arm The hinge is connected.

The brace arm 10, the auxiliary brace arm 20, and the arm connecting arm 30 of the present invention are composed of one pair using a steel sheet, but not all one pair. In addition, as long as the hinge can be connected at both ends, any other section steel or lumber can be used.

Terms used especially in the present specification will be described.

'Hinged connection' refers to any way in which two or more members are pivotally connected. The hinge connection shown in the present embodiment is a method of fitting an independent hinge shaft (joint shaft) to, for example, the first and second connection holes 101 and 109 of the brace arm. When the hinge shaft is fixed or protruded to one connection portion of the hydraulic cylinder, such as the connection portions 51 and 53 of the cylinder, or the connection portion of the device connecting portion 40 which forms an axial hole in one connection portion 51 and 53 of the hydraulic cylinder and is connected thereto. It includes the case of forming a hinge axis. In short, the element of the shaft and the shaft hole refers to all the coupling that can be rotated.

'Hole connection' means a hinge connection in which the clearance between the shaft and the shaft hole is minimized as much as possible so that the shaft moves little in the shaft hole when the device is in operation. For example, the hole connection of claim 2 means that the first shaft hole 301 of the arm connecting rod and the joint holes 103 and 107 of the brace arm are formed by holes and hinged to the joint shaft 105. In the present invention, all hinge connections mean hole connections except when specifically limited to 'hole connection'.

On the contrary, 'hole connection' refers to all the structures hinged by forming the shaft hole wide in all directions within a certain range so that the joint axis can move freely in the shaft hole so as not to interfere with the operation of the hole connected brace arm. For example, the 'long hole connection' of claim 2 and 5, as well as the structure shown in Figure 3, the position is changed to form a hole in the position of the second shaft hole 303 of the arm connecting rod and joint holes (203, 207) of the auxiliary brace arm This may include forming a long hole in the hinge and connecting the joint shaft or the like.

In addition, in the claims referred to in the embodiment, the 'first shaft hole 301' and the 'first shaft connection part 301' used in the claims have the same reference numerals, but this is only for the understanding of the present invention. Note that this does not refer to the shape itself. The 'first shaft hole, the second shaft hole' presented in the embodiment is only one embodiment subsumed in the concept of the 'axial connection part'.

Likewise, the term 'axial connection' of claim 2 is a term in which a shaft connection part is conceptualized to include various forms in which a shaft connection part can be connected to another member by distinguishing it from a specific part of the 'axial connection part'.

The following describes the operation of the present invention disclosed in the drawings in the specification.

Figure 4 (a) is a state before the side formwork is demolded or set. In this state, when the hydraulic cylinder 50 is stretched, the cylinder rod pushes the upper end of the device connecting rod 40 and the arm connecting rod 30 to expand the brace arm 10 and the auxiliary brace arm 20 and the side formwork connected to the brace arm ( 7) is worn (set) while rotating about the hinge axis (5).

At this time, when the concrete is placed on the side formwork and the side pressure is applied, the hydraulic cylinder 50 and the support arms 10 and 20 are most stable and firmly supported (set posture) immediately before both arms of the support arm become 180 °. It becomes the state of. This is because when it is turned 180 ° or more and folded in the opposite direction, the holding force against the side pressure is lowered. Therefore, the length of the brace arm is also preferably manufactured according to this, as shown in FIG.

On the contrary, when demolding, the hydraulic cylinder 50 is reduced, and the support rods 10 and 20 are folded while the cylinder rod pulls the device connecting rod 40 and the arm connecting rod 30, and the side formwork 7 is the hinge shaft 5. Rotating around), it is demoulded like folding the wings.

As can be seen in the enlarged view of Fig. 4 (b), the joint shaft 205 of the auxiliary brace arm is in close contact with the upper surface of the long hole 303 when worn, and as shown in Fig. 4 (a) when demolding The articulation axis 205 of the brace arm moves below the long hole 303.

The embodiments described above are only for clearly describing the contents of the present invention, but are not intended to limit the protection scope of the present invention, and all changes that can be commonly applied by those skilled in the art to apply the present invention are included in the scope of the present invention. Of course.

The present invention is not only used as a detachable device of the side formwork of the steel round formwork for tunnels, but also can be applied to other parts that can be detachable by rotating around the hinge axis, as well as similar formwork and the side of the formwork.

1 Center body 3 Formwork
5 Hinge Shaft 7 Side Formwork
9 Side form removable device 10 Brace arm
15,25 Joints 20 Assistive Brace Arms
30 Arm Connection 40 Device Connection
50 Hydraulic cylinder 51 Joint connection
53 Center Connection 101,201 First Connection
103,203 Joint hole 105,205 Joint axis
107,207 Joint hole 109,209 Second connection
301 First Shaft 303 Second Shaft
M moving hydraulic cylinder L lifting means
R Rail W Cloud

Claims (5)

Side surface of the steel formwork for tunnel construction in which the upper formwork (3) installed on the upper part of the central body (1) provided with the elevating means and the moving means and the side formwork (7) connected by the upper formwork and the hinge shaft (5) are wing-shaped. As the structure of the formwork detachable device 9,
Removable device (9) of the side formwork is composed of a brace arm (10) and a hydraulic cylinder (50), the brace arm has a first connection portion 101 which is hinged to the central body at one end; A second connector 109 hinged to the side die and the other end; A central portion includes a joint portion 15 connected to the shaft, and the hydraulic cylinder includes a joint connection portion 51 connected to the joint portion 15 of the brace arm at one end thereof; Removable device of a steel formwork comprising a; a central body connecting portion (53) hingedly connected with the central body at the other end The method of claim 1,
Between the joint part 15 of the brace arm and the hydraulic cylinder 50, another auxiliary brace arm 20 having the same structure as the brace arm 10 is hinged to the brace arm joint 15 Is hingedly connected to the arm connecting unit 30 having a one-axis connecting portion 301; and the second shaft connecting portion 303 hinged to the joint portion 25 of the auxiliary brace arm,
A first shaft connection hingedly connected between the brace arm joint part 15 and the first shaft connector 301 and a second shaft connection hinged between the joint portion 25 and the second shaft connector 303 of the auxiliary brace arm; One is a 'hole connection', the other is a steel formwork removable device characterized in that the 'hole connection' The method of claim 1,
Between the hydraulic cylinder 50 and the joint portion 15 of the brace arm, the device connecting rod 40 is further installed in the longitudinal direction of the central body, the upper portion of the device connecting rod 40 is a joint of the plurality of hydraulic cylinders Connecting portion 51 is hinged, the lower portion of the device connecting rod is a removable form of steel formwork, characterized in that the hinge connected to the joint portion 15 of the brace arm The method of claim 2
Between the hydraulic cylinder 50 and the joint portion 25 of the auxiliary brace arm is further provided with a device connecting rod 40 in the longitudinal direction of the central body, the upper portion of the device connecting table 40 is a joint connecting portion of the hydraulic cylinder ( 51 and hinged, the device connecting unit 40, the lower portion of the steel formwork, characterized in that coupled to the upper end of the arm connecting rod (20). The method of claim 4, wherein
The arm connector 30 is the upper end is extended and the axial connection portion is formed in addition to the extended connecting rod and the auxiliary brace arm is attached to the additional axial connector, characterized in that the 'long hole connection' is characterized in that

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