KR20110016659A - Support bracket for preventing fall gang form and concreat structure crack - Google Patents

Abstract

PURPOSE: A bracket for preventing the falling of a gang form and crack is provided to prevent the falling of a gang form as the holding member of the falling gang form is caught on a concrete structure and reduce the impact of collision applied by the holding member to the concrete structure. CONSTITUTION: A bracket for preventing the falling of a gang form and crack comprises a square pipe, a holding member(20), and an elastic support(30). The square pipe is welded to vertical pipes which are symmetrically arranged on left and right sides. The holding member comprises a first vertical support portion(21) and a horizontal support portion(22) which are projected from the top of the square pipe in a holding member shape, and a second vertical support portion extended from the rear end of the horizontal support portion is inserted to slide in the square pipe. The elastic support elastically supports the holding member from the bottom of the square pipe.

Description

Support bracket for preventing fall gang form and concreat structure crack}

The present invention relates to a fall prevention and crack prevention bracket of the gang form, more specifically, the overall weight of the gang form when the hook-type hook member installed on the gang form impacts the concrete structure while the basic function of the safety side of the gang form fall prevention The present invention relates to a bracket for preventing fall and crack of a gang form, which prevents damage to a structure by mitigating a direct impact force on a concrete structure in a state of loading.

In general, the Gang Form (1) is a form of large steel, which is a temporary material used when constructing the outer wall surface of a high-rise building, as shown in Figures 1 to 4, of the steel form (steel form) 2 A plurality of horizontal and vertical pipes (4) (5) at intervals on the back side are provided to have a function of supporting the steel foam, and the horizontal support (3a) and the working platform (3b) on the vertical pipe (5) And a cage 3 provided with a hand rail or the like.

The steel foam 2 of the gang foam (1) is fixed to a certain interval by the fixing bolt (7) with the inner formwork 6 to cast concrete to form the space between the steel form and the inner formwork In this case, one weight of the gangform (1) used is a weight of about 3 to 4 tons, is used more than 20 times when the concrete is poured, the gangform configured in this way to the tower crane for the next floor construction Used by lifting or replacing.

First, the gangform, as shown in FIG. 1, the inverted U-shaped lifting ring on both sides of the upper side of the rear vertical pipe 5 of the steel form 2 symmetrically, that is, the same distance from the left and right sides in the middle of the gangform 1. (8) are welded, and the lifting ring (8) is held by the hoist (T) of the tower crane provided with a hook (h).

In the lifting method of the gangform, after dismantling the fixing bolt (7) buried at the bottom of the structure in order to separate the gangform (1) from the structure (C) formed by placing concrete, the molded concrete structure (C) The upper end is pushed away from the unit.

At this time, if the sign between the crane and the final dismantle of the tower crane does not match each other, and the gangform is not held by the tower crane's hoist, the gangform made of large steel formwork is released. The hypothesis of the fall of the hypothesis that there was a problem that a fatal safety accident occurs.

In order to solve this problem, conventionally, the fall prevention support bracket 9 configured as shown in FIG. 2 is installed at the upper left and right sides of the rear end of the gang form 1 so that the gang form fall prevention support bracket 9 is concrete when the gang form falls. It was made to be able to support the gangform 1 by hanging on the top of the structure (C).

The gangform fall prevention support bracket 9 is the end of the horizontal tube (9c) is welded to the upper side of the vertical support tube (9a), the support tube (9a) at the lower end of the other end of the welded horizontal tube (9c) It is constructed by welding a shorter vertical tube 9d, and between the support tube 9a and the horizontal tube 9c and between the horizontal tube 9c and the vertical tube 9d is a reinforcing rib 9e. It is supported by, and a plurality of fastening holes 9b are formed in the lower side of the vertical support pipe 9a.

The conventional gang foam fall prevention support bracket 9 configured as described above has a vertical support tube 9a having a fastening hole 9b formed at the lower side thereof, as shown in FIGS. 3 and 4. 2) Bolted to the vertical pipe (5) on the back is installed. At this time, the horizontal tube (9c) protrudes toward the concrete (C) side, the vertical tube (9d) is spaced apart from the concrete structure (C) by a predetermined distance.

In this state, if the sign between the tower crane operator and the gangform final dismantler does not match as described above and the gangform 1 falls, the vertical pipe of the support bracket 9 for preventing the fall of the gangform installed on the gangform 1 9d) is caught by the concrete structure (C) to prevent the fall of the gang form (1) by supporting the gang form (1).

However, the conventional gang foam fall prevention support bracket is not provided with a means for mitigating the impact on the concrete structure by the support bracket when the gang foam falls, so that the weight of the entire gang form when the support bracket hits the structure As the impact force acts directly on the concrete structure as it is, there is a problem that a crack occurs in the structure, as well as a construction failure of the structure.

Therefore, the present invention was devised to solve the above-mentioned conventional problems, and an object of the present invention, while the basic function of the safety side of the fall prevention of the gang form, while the hook-type engaging member installed on the gang form hit the concrete structure To prevent the fall and cracks of the gangform to prevent the damage of the crack and the structure by mitigating the impact force does not directly act on the structure in the state of carrying the entire weight of the gangform to provide.

In addition, another object of the present invention is to provide a bracket for the fall prevention and crack prevention of the gang form, as well as easy to handle the handle according to the use and storage of the hook member so that the hook-type locking member is swiveling operation.

In addition, another object of the present invention is to provide a gangform fall prevention and crack prevention bracket to increase the safety of the gangform fall prevention by adding a support point in contact with the concrete structure during the fall of the gangform to increase the safety of the gangform fall prevention. .

In addition, another object of the present invention is to install an elastic support member in the contact portion of the hook-shaped locking member supported on the concrete structure when the gangform falls can prevent the locking member of the steel material directly collide with the structure to be damaged. To provide fall protection and crack prevention brackets for gang forms.

Thus, in order to achieve the object of the present invention, one form of the fall prevention and crack prevention bracket of the gangform of the present invention, each of the vertical pipes of a predetermined position disposed in the left and right symmetry among the vertical pipes installed on the rear of the gangform One or more square pipes which are abutted and integrally welded; The first vertical support portion and the horizontal support portion of the hook-type rotatable protruding laterally from the upper end of the tube pipe are integrally formed, and the second vertical support portion extending downward from the rear end of the horizontal support portion in the lower side of the tube pipe is capable of vertically sliding. A locking member to be inserted; And an elastic support for elastically supporting the locking member downward from the lower end of the square pipe.

In addition, the elastic support portion and the male screw portion formed on the lower side of the locking member; An upper plate integrally provided at a lower end of the square pipe and having a through hole formed at a central portion thereof; An elastic spring provided on a lower outer side of the locking member that has passed through the through hole of the upper plate; A lower plate inserted into an outer side of the lower locking member of the elastic spring to support a lower portion of the elastic spring; And a fixing nut fastened to an outer male screw portion of the engaging member penetrating the lower plate.

Accordingly, the present invention is to secure the concrete by reducing the impact force acting on the concrete structure by the elastic support and at the same time the safety function of preventing the fall by the engaging member installed on the gangform is caught on the concrete structure when the gangform falls To prevent damage to the structure.

Therefore, according to the bracket for the fall prevention and crack prevention of the gangform according to the present invention, when the fall of the gangform, the engaging member is supported by the concrete structure, the impact force carrying the overall weight of the gangform by the elastic springs provided on the lower side of the pipe pipes By being able to alleviate the transmission to the concrete structure through the locking member there is an effect to ensure the safety of the gang foam fall, as well as to prevent cracking of the concrete structure and poor construction of the structure by the impact force.

In addition, the present invention can be made easier to handle according to the use and storage of the hook member by allowing the hook member to swing the hook member to be folded or unfolded, the installation work is simple and economical It works.

In addition, the present invention is to minimize the impact force acting on the concrete structure by the cushioning function of the elastic spring as described above, so that the locking member is supported on the left and right sides of the gang form, respectively, to the concrete structure by doubling the support force by the gang foam It has the effect of further increasing the safety of the fall.

In addition, the present invention also has the advantage of preventing damage and breakage of the structure by the locking member when the gangform fall by the elastic support material mounted to the locking member so that the locking member is not in direct contact with the concrete structure.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the present invention according to the embodiment.

Figure 5 is an exploded perspective view showing the fall prevention and crack prevention bracket of the gangform according to the present invention, Figure 6 is a perspective view showing a state of the fall prevention and crack prevention bracket of the gangform installed in the gangform.

As shown in the present invention, the present invention is capable of pivoting and vertically sliding the inside of the pipe pipes 10 and the pipe pipes welded to the vertical pipes 5 arranged in the symmetrical arrangement of the gangform 1. The locking member 20 to be inserted, and the locking member 20 is largely divided into an elastic support 30 for elastically supporting the lower side of the pipe pipe 10.

The angular pipe 10 is formed in the form of a common square pipe, the upper and lower sides are open as shown in Figs. 5 and 6 are arranged symmetrically from the middle of the gang form (1) to left and right, respectively. The back of the vertical pipes (5) are respectively installed.

In this case, when the width of the gangform 1 is 10 m or less, two pieces are provided on the rear left and right sides of the gangform 1, and when the width of the gangform 1 is 10 m or more, the middle part of the rear surface of the gangform 1 and the left and right sides Are installed at three. In addition, a fixing plate 11 having an insertion hole 11a through which the locking member 20 penetrates inside the upper pipe pipes 10 is welded, and an upper end of the pipe pipes 10 of the locking member 20 is welded. The installation grooves 12 and the storage grooves 13 into which the horizontal support portions 22 are fitted are formed at right angles to each other.

The locking member 20 is formed in the shape of a long vertical rod, the first vertical support portion 21 and the horizontal support portion 22 protruding toward the front from the upper end of the tube pipe 10 is formed in a hook shape, The second vertical support portion 23 extending downward from the rear end of the horizontal support portion 22 into the inner tube pipe 10 is configured to be slidably inserted up and down.

The elastic support portion 30 has a male screw portion 31 is formed on the outer surface of the locking member 20 protruding downward from the inside of the square pipe 10, the upper plate 32 in the lower opening of the square pipe (10) ) Is adhered and welded, the elastic spring 35 is placed on the lower side of the upper plate 32 is provided with a lower plate 33, the locking member ( Through-holes 34 through which the lower side of 20 are inserted are formed, respectively.

In addition, the male screw part 31 formed on the outer surface of the locking member 20 penetrates through the center through hole 34 of the upper plate 32, the elastic spring 35, and the lower plate 33 to lower plate 33. By fastening with the fixing nut 36 at the lower end of the upper plate 32, the upper plate 32 is a fixed end to be moved together with the square pipe 10, the lower plate 33 is the male screw portion 31 and the nut ( 36, the movable member is movable up and down together with the locking member 20, and the locking member 20 can be elastically supported from the lower side of the square pipe 10. As shown in FIG.

As illustrated in FIG. 7, the present invention configured as described above is integrally provided with the gangform 1 by being welded to the tube pipe 10 by contacting the rear vertical pipes 5 of the gangform 1. The first vertical support part 21 and the horizontal support part 22, which are front parts of the locking member 20, protrude toward the concrete structure C. At this time, the lower end of the first vertical support portion 21 is spaced apart from the concrete cast structure (C) by a predetermined distance, the rear end of the horizontal support portion 22 is fitted into the installation grooves 12 of the pipe pipe 10 is installed concrete The fall prevention function of the gang form is performed.

In this state, when the locking member 20 of the front protrusion of the first vertical support 21 and the horizontal support 22 forming the hook shape is not used, the locking member 20 is elastically supported 30. After overcoming the elastic force of the elastic spring 35 of the elastic spring 35 and forcibly pulled out upward, when it is rotated in the direction of the storage groove 13 of the square pipe 10 forming a right angle with the installation groove 12, the compressed elastic The locking member 20 moves downward again by the restoring force of the spring 35, and the rear end of the horizontal support part 22 of the locking member 20 is fitted into the storage groove 13 of the square pipe 10. Storage and handling become easy (see FIGS. 8A and 8B).

An operating state of the present invention configured as described above will be described in detail with reference to FIGS. 8A and 8B.

First, in the present invention, as shown in FIG. 8A, the pipe pipe 10 is welded to the rear vertical pipe 5 of the gangform 1, and the first locking member 20 is inserted into the pipe pipe 10. The vertical support part 21 and the horizontal support part 22 protrude toward the concrete structure C side, and the vertical support part 21 maintains the upper surface of the cast concrete structure C and a predetermined fall distance L1.

And the elastic member that is elastically supported by the locking member 20 to the lower side of the pipe pipe 10 to the lower side of the second vertical support portion 23 is formed to extend to the lower side to the rear end of the horizontal support portion 22 of the locking member 20 The elastic spring 35 of the support part 30 is installed to have a spring support distance L2 greater than the fall distance L1 of the first vertical support part 21.

In the present invention, since the impact force of the falling object increases as the drop distance L1 increases in proportion to the acceleration of gravity and the square of time, the drop distance L1 between the concrete structure C and the first vertical support 21 is at least a short distance. By adjusting to a more advantageously it is possible to reduce the impact force on the concrete structure.

When the gangform 1 falls in such a state, the locking member 20 is supported by the first vertical support portion 21 by the concrete structure C as shown in FIG. 8B, and includes the angular pipe 10. (1) continues to fall. At this time, the upper plate 32 of the elastic support portion 30 welded to the lower side of the square pipe 10 is lowered together with the square pipe 10 and becomes a movable end, and the lower plate supporting the lower portion of the elastic spring 35. 33 is a fixed end because it is fixed to the fixing nut 36 fastened to the lower end side male thread portion 31 of the locking member (20).

Therefore, the elastic spring 35 of the elastic support portion 30 is the compression distance (L3) at the spring support distance (L2) by the pressure of the tube pipe 10 and the upper plate 32 descending with the fall of the gang form (1). ) To prevent the fall of the gang form by supporting the structure of the locking member 20 by mitigating the impact force transmitted to the concrete structure C through the locking member 20 while being compressed and deformed, and the locked concrete structure C and the locking Cracking and damage of the concrete structure caused by the collision of the member 20 will be able to be prevented in advance.

9 and 10 show another embodiment of the present invention, Figure 9 is a perspective view showing a state in which the bracket of the present invention is installed on the gangform, Figure 10 is a cross-sectional view showing a connection structure of the present invention.

As shown in FIG. 9, a pair of square tube pipes 10 of the present invention are welded and disposed between the vertical pipes 5, which are symmetrically positioned on the right and left sides of the gangform 1, facing each other. The locking members 20 respectively inserted into the pair of pipe pipes 10 are coupled to each other by an intermediate connecting member 40, and each support point for the concrete structure is dropped into two pairs when the gangform falls. As it is supported, the supporting force of the locking member 20 with respect to the concrete structure doubles, and has a function of allowing a stable support by adding a point having a slight distance.

To this end, the present invention forms the slits 14 on both sides of the pair of tube pipes 10 as shown in FIG. 10, and the second vertical of each locking member 20 inserted into the tube pipes 10. The support part 23 is formed with a through-hole 25 penetrating in the lateral direction.

After the intermediate connection member 40 having the fixing screw portion 40a is formed at both ends, the intermediate connecting member 40 is inserted through the rod through-hole 25 of the locking member 20, and both fixing screw portions 40a are formed. By fastening with a fastening nut (40b) is made of a configuration in which the engaging members 20 in the tube pipe 10 provided in a pair of both sides are coupled to each other up and down through the slit (14).

Thus, in the present invention, the two locking members 20 provided in pairs on both the left and right sides of the gangform (1) when the gangform fall, interlocked with each other by the intermediate connecting member 40 of a certain distance to the concrete structure (C) By adding and securing the points at intervals, it is possible to double the stable support and bearing capacity of the gangform, and also to double the cushioning effect by the elastic spring 35 to further reduce the impact force on the concrete structure. .

Figure 11 is a cross-sectional view showing another embodiment of the present invention, in the form of using a locking member made of a hollow pipe member, as shown in the present invention when the gangform fall as shown in the hollow locking member 20 of the steel material The hollow claw 51 made of a rubber material at the lower end of the first vertical support portion 21 of the locking member 20 for landing stability of the locking member 20 so as not to directly contact the concrete structure C. It is characterized in that the elastic landing portion 50 is formed in the structure by fitting therein.

To this end, when the elastic claws 51 made of rubber material are inserted into the space 24 inside the lower end of the first vertical support 21 of the locking member 20 when landing on the concrete structure C when the gang form falls. Not only can the shock be generated, but the lower end portion of the first vertical support portion 21 of the locking member 20 made of steel does not directly contact the concrete structure C so that the crack is prevented by elastic contact. It is possible to secure the stability of.

In addition, the present invention is the outer side of the horizontal support 22 of the locking member 20 so that the horizontal support 22 of the locking member 20 is not damaged or damaged by the collision with the concrete structure (C) during the fall of the gangform. The elastic cap 52 is wrapped around it. As shown in FIG. 12, the elastic cap 52 is formed of an elastic material in which both sides and an upper portion thereof are opened to the horizontal support portion 22 of the locking member 20, and the horizontal support portion is formed through the upper side opening portion 52a. 22) is configured to surround the outer surface is inserted into the lower outer side.

Therefore, even when the gangform falls, even if the horizontal support portion 22 of the locking member 20 collides with the concrete structure C, the cushioning function of the elastic cap 52 prevents damage and damage to the structure by the horizontal support portion 22. You can do it.

As described above, the present invention can prevent the fall of the gang form by being supported by the first vertical support portion of the locking member in the fall of the gang form, of course, by the elastic support provided on the lower side of the pipe pipe It is possible to prevent the crack and damage of the concrete structure by mitigating the impact force transmitted to the concrete structure through the locking member in the state of carrying the overall weight of the, and also the pair of locking members on the left and right sides of the angular pipe, respectively. By arranging the configuration, the support point for the concrete structure can be added to double the supporting force.

1 is a perspective view showing a lifting process of a general gangform,

Figure 2 is a perspective view showing a conventional gang foam fall prevention bracket,

Figure 3 is a perspective view showing the installation state of the conventional gang foam fall prevention bracket,

Figure 4 is a cross-sectional view showing the installation state of the conventional gang foam fall prevention bracket,

5 is an exploded perspective view showing the overall configuration of the present invention;

6 is a perspective view showing a state in which the present invention is installed in the gangform,

7 is a perspective view showing the use and storage state of the locking member of the present invention,

Figure 8a is a cross-sectional view showing a state before operation of the present invention,

8b is a sectional view showing an operating state of the present invention;

9 is a perspective view showing a state in which a pair of engaging members are installed in the gangform as another embodiment of the present invention;

10 is a cross-sectional view showing a connection structure of a pair of engaging members of the present invention;

11 and 12 is a cross-sectional view showing a locking member of the pipe as another embodiment of the present invention,

12 is a perspective view of an elastic cap.

Description of the Related Art

10: square pipe 11: fixed plate

11a: insertion hole 12: mounting groove

13: Storage groove 14: Slit

20: locking member 21: first vertical support portion

22: horizontal support 23: second vertical support

24: space portion 25: sealed through hole

30: elastic support 31: male threaded portion

32, 33: upper and lower plate 34: through hole

35: elastic spring 36: fixing nut

40: intermediate connecting member 40a: fixing hole

50: elastic landing part 51: elastic claw

52: elastic cap

Claims (6)

One or more square pipes 10 which are integrally welded to the vertical pipes 5 at predetermined positions disposed symmetrically among the vertical pipes installed on the rear surface of the gangform 1 and welded integrally; The first vertical support portion 21 and the horizontal support portion 22 in the form of hooks rotatable protruding laterally from the upper end of the tube pipe 10 are integrally formed, and the tube pipe 10 from the rear end of the horizontal support portion 22. A locking member 20 into which the second vertical support part 23 extending downwardly is inserted to be slidable up and down; The fall prevention and crack prevention bracket of the gangform, characterized in that consisting of; characterized in that consisting of; elastic support portion 30 for elastically supporting the locking member 20 from the lower end of the square pipe (10) to the lower side. The method of claim 1, Gang form, characterized in that the upper end of the tube pipe 10 is provided with an installation groove 12 and a storage groove 13 in a direction perpendicular to each other so that the rear end of the horizontal support 22 of the locking member 20 is fitted. Fall and crack prevention brackets. The method of claim 1, The elastic support portion 30 is a male screw portion 31 formed on the lower outer surface of the locking member 20; An upper plate 32 integrally welded to the lower end of the square pipe 10 and having a through hole 34 formed in the center thereof; An elastic spring (35) fitted to a lower outer side of the locking member (20) passing through the through hole (34) of the upper plate (32); A lower plate 33 inserted into the outer side of the locking member 20 to the lower side of the elastic spring 35 to support a lower portion of the elastic spring 35; A fixing nut 36 which is fastened to the outer male screw portion 31 of the locking member 20 penetrating the through hole 34 of the lower plate 33; and consists of upper and lower plates 32 and 33 Fall prevention and crack prevention bracket of the gangform, characterized in that the elastic spring (35) installed in the elastic support. The method of claim 1, The slits 14 are formed on both sides of the pair of square pipes 10 welded between neighboring vertical pipes among the vertical pipes disposed at the symmetrical positions to accommodate the locking members 20, respectively. The sealing member 20 of the pair is formed through the through-holes 25, the fastening nut (40b) by inserting the intermediate connecting member 40 formed on both ends of the fixing screw portion (40a) between the through-hole 25 Falling and crack prevention bracket of the gangform, characterized in that the fixing screw portion (40a) by the fixed coupling by the pair of locking member 20 connected to the intermediate connecting member 40 through the slit 14 up and down interlocked . The method of claim 1, The locking member 20 is a shape of a hollow pipe, the gang form, characterized in that it has an elastic landing portion 50 is fitted into the elastic claw 51 of the rubber material from the lower end of the first vertical support 21 to the hollow interior Fall and crack prevention brackets. The method of claim 1, Falling prevention and crack of the gangform, characterized in that the horizontal support portion 22 of the locking member 20 is configured to surround the outer surface of the horizontal support portion 22 by an elastic cap 52 having an opening portion 52a formed thereon. Prevention bracket.

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