KR20170003116U

KR20170003116U - Gang form with safety apparatus

Info

Publication number: KR20170003116U
Application number: KR2020160001061U
Authority: KR
Inventors: 김용상
Original assignee: 김용상
Priority date: 2016-02-26
Filing date: 2016-02-26
Publication date: 2017-09-05

Abstract

This design can be manufactured with an extremely simple structure and can be used in the field without trouble because there is no possibility of breakage when the gang foam is lifted. The operation of the bolt cup is sure and the anchor bolt can be safely dismantled A safety collar (14) arranged so as to overlap with a lower position of a lifting ring fixedly attached to an upper end of a vertical member (6) arranged in a pair of pairs; An upper screw rod 16 extending to the lower end of the safety ring 14; A turn buckle (18) screwed on the upper screw rod (16) at an upper portion and screwed to a lower screw rod (20) at an opposite lower side; And is hinge-connected to a fixing piece 28 which is arranged to cover the periphery of an anchor bolt 10 installed between the vertical members 6 and which is attached across the vertical members 6 so as to be vertically opened and closed, A bolt cover (22) having a through hole (26) through which the lower end of the rod (20) is connected; A spring 30 installed on the fixing piece 28 to pressurize the bolt cover 22 to conceal the anchor bolt 10 at all times; It is composed of articles.

Description

[0001] Gang form with safety apparatus [0002]

The present invention relates to a gantry having a safety lifting device that is structured to prevent fall when gantry dismantling work is performed after the outer wall curing.

The gang form is a large formwork in which an outer wall formwork and a footing cage are integrally fabricated for the purpose of building a high-rise building with a flat top and a bottom of the same sectional structure. The large formwork is composed of a horizontal member, And the horizontal wella which is the upper and the lower part of the gang foam is attached thereon. Then, various bolt tie holes connected to the inner foam are arranged on the back side of the gang foam, and finally, And it is provided with a lifting hook so that it can be lifted by being hooked onto a hook of a tower crane in the field.

Close coordination between tower crane operators, signalers, and gantry installers is crucial to prevent accidents from installing and disassembling gangways in the field.

That is, the operator moves through the cage of the gantry and repeats the operation of tightening or loosening the anchor bolts embedded in the wall to install or disassemble the gantry.

However, the number of anchor bolts that fix the gang form is too much, so it takes time to loosen or tighten.

In case of dismantling the gangway, the anchor bolt fastened at the bottom is not removed before the hook of the tower crane is hooked on the lifting hook. And all the anchor bolts are dismantled in advance, and in the meantime, when the tower crane hooks on the lifting hook, the remaining anchor bolts are disassembled and the time is shortened.

However, if the gang form is dismantled in the manner described above, it is possible to disassemble the anchor bolt too much before lifting the gang form with the tower crane.

As a method for fundamentally preventing a safety accident caused by a worker's non-compliance with the preventive measures as described above, there has been proposed a technique of concealing an anchor bolt fastened to a specific portion of a gang form so as not to be released in advance, There is known a safety device which allows the concealed anchor bolt to be exposed to the outside to be unfastened.

In the following Patent Document 1, when the hook of the tower crane is hooked up by the hook of the tower crane by arranging the hook portion hinged at the tip end with the lifting hook of the gang form, the hooking portion interlocks with the lifting hook to lift the fastening portion of the free end, The tapered cam is released from the tapered cam by interlocking the lateral rotation part of the tapered cam disposed at the anchor bolt position of the gantry so as to release the tether pin of the tapered pin repressed by the elastic member inside the tapered cam, Discloses a safeguard apparatus for preventing gang-foam from dropping automatically when the gang form is lifted to a tower crane.

In the following Patent Document 2, a stopper operating member is disposed in an overlapping manner on a lifting hook, and when the stopper operating member is lifted up by the hook of a tower crane together with the lifting hook, the stopper is operated while the operating bar is operated in unison with the anchor bolt And releasing the released gear to a state in which it can be released.

The lower end of the safety ring member is extended to both sides of the vertical member of the gantry so that the lower end of the safety ring member is fixedly attached to the lifting ring with the coil spring penetrating therethrough, And a pair of moving brackets for supporting the anchor bolt cover which is horizontally disposed on the gang form and shields the head portion of the anchor bolt is attached and fixed in the middle of the safety ring member When the safety hook member is lifted up by the hook of the tower crane together with the lifting hook, the anchor bolt cover is lifted up and switched to a state in which the operator can release the anchor bolt.

In Patent Document 4, the safety ring member is disposed so as to overlap the lifting ring, both ends of the safety ring member are extended to the outside of the vertical member of the gantry, the lower end thereof is supported by the fixing member attached to the lifting ring through the elastic member, The anchor bolt cover is welded to the intermediate portion of the annular member, and when the safety annular member is lifted upward, the anchor bolt cover is interlocked and raised to expose the anchor bolt to the outside.

In the conventional gauntlet lifting safety device as described above, the structure disclosed in Patent Document 1 has a clear organic operating relationship. However, when the gantry lifting safety device is applied to an actual construction site, There is a disadvantage that it can be easily broken.

In addition, in Patent Document 2, it is necessary to attach a gear to an anchor bolt, and a gear to be engaged with the gear to form a braking gear must also be formed on the stopper.

Patent Literature 3 has an advantage of covering several anchor bolts in the lateral direction with one anchor bolt cover, but the anchor bolt lid installed in the lateral direction is easily broken when it collides with other objects in a construction site So that frequent failures are caused during use, which may lower the working efficiency.

Patent Document 4 discloses that the anchor bolt cover can be arranged in the longitudinal direction so that the breakage rate can be reduced at the time of field application. However, since the safety ring member is bent in the shape of an inverted- It is disadvantageous from a mask and can not be offered at a low price required by a construction site.

Korean Patent No. 10-0760286, Korean Patent No. 10-0918970, Korean Patent No. 10-1124940, Korean Utility Model Publication No. 20-0001119,

Therefore, in order to solve the above problem, the present invention can be manufactured with an extremely simple structure, and there is no possibility of breakage in the lifting of gang foam, so that it can be used without any trouble in the field, And to provide a gantry equipped with a safety lifting device of a construction that can be prevented to an excellent extent.

A gantry equipped with a safety lifting device of the present invention which realizes the above object is characterized in that a safety collar is arranged to overlap a position lower than a lifting ring fixedly attached to an upper end of a vertical member and an upper screw rod is extended from a lower end of the safety ring And a lower screw bar is screwed to a lower portion of the turn buckle so as to be vertically adjustable in length. The lower end of the lower screw rod is connected to an upper portion of an anchor bolt And the bolt cover is hinge-connected to the fixing piece so as to be vertically opened and closed, while being elastically supported by a spring to always conceal the anchor bolt.

In the above-described gantry equipped with the safety lifting device of the present invention, a hanger is further provided on the vertical member so as to be positioned around the approximately middle portion of the upper screw rod, so that the position of the safety hook connected to the upper screw rod is always It is possible to securely engage with the hook of the tower crane together with the lifting hook so as to be interlocked with each other.

In a gantry equipped with a safety lifting device according to the present invention, the safety lifting device includes a turnbuckle, an upper and lower screw rods connected to the upper and lower sides of the turnbuckle, a safety ring integrally formed with the upper screw rod, And the bolt cover is biased by the upper part between the vertical members of the gang form and pressed by the spring. Therefore, when the gang form is applied to the gang form, it can be used without any fear of damage at the construction site. There is an advantage that the bolt cover is interlocked reliably through the upper and lower screw rods and the turn buckle so as to be opened and closed up and down, and in particular, the manufacturing cost is remarkably inexpensive as compared with the conventional safety lifting device.

Further, in the gang form equipped with the safety lifting device according to the present invention, the structure in which the hanger is further provided on the upper screw rod, the safety hook is restricted by the hanger and does not deviate from the position parallel to the lifting ring, Thereby preventing the occurrence of malfunctions.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side cross-sectional view showing a main structure of a gantry with a safety lifting device according to an embodiment of the present invention; FIG.
Fig. 2 is a front view showing a state in which an anchor bolt is hidden by a bolt cover in correspondence with Fig. 1; Fig.
3 is a side sectional view showing a state in which the bolt cover is exposed to the anchor bolt while the safety hook is lifted to the tower crane;

Hereinafter, the present invention will be described in detail as a preferred embodiment with reference to the accompanying drawings.

As shown in Fig. 1, the gang form of the present invention is constructed such that the horizontal member 4 is arranged and welded at relatively wide intervals on the plate surface of the steel plate 2, and then the vertical member 6 is welded thereto again And an anchor bolt 10 is installed on the vertical member 6 through a washer 8 to be fastened and assembled to a construction site.

In the gang form having the above-described configuration, lifting hooks 12, which are hooked up and lifted by the hook H of the tower crane, are integrally attached and connected to the upper end of both vertical members 6, So that the safety hooks 14 overlap.

An upper screw rod 16 is extended to a lower portion of the safety collar 14 and screwed to an upper portion of the turn buckle 18 while a lower screw rod 20 is screwed to a lower portion of the turn buckle 18, And the lower end thereof extends through the through hole 24 formed in the bolt cover 22 and is connected and fixed by the stopper 26. [

The turn buckle 18 provides an advantage that the length of the upper and lower screw rods 16 and 20 extending up and down can be adjusted to some extent, It is not difficult to change the length from the bolt cover 22 to the bolt cover 22.

As shown in Fig. 2, the bolt cover 22 is provided so as to be openably and closably supported by a fixing piece 28 which is fixed across the space between the two vertical members 6, and on the other hand, The anchor bolts 10 are installed so as to cover and cover the anchor bolts 10 at all times due to the elastic force of the spring 30 interposed therebetween.

The hanger 32 may be fixedly attached to either one of the vertical members 6 so that the upper screw rod 16 is maintained in a vertical posture. May be applied particularly when the length between the safety ring 14 and the bolt cover 22 becomes long.

In the present invention, if the anchor bolt 10 is hidden by the bolt cover 22, there is no gap for pushing the dismantling tool, and the operator can not release the anchor bolt 10, so that the installation state of the gantry can be safely maintained have.

However, the hook H of the tower crane is inserted and lifted into the lifting hook 12 and the safety hook 14 to pull the safety hook 14 to the same height as the lifting hook 12 The upper and lower screw rods 16 and 20 and the turn buckle 18 interlock with each other so that the bolt cover 22 hinged to the fixing pin 28 is opened while being turned, And is exposed to the outside so that the operator can release it.

In this state, since the gantry is lifted to the tower crane, even if all of the anchor bolts 10 are loosened, the gantry does not fall and the work can be safely performed without an accident.

As described above, the gantry related to the present invention has a simple structure in which the bolt cover for concealing the anchor bolts is interlocked with the upper and lower screw rods and the turn buckle to open and close, thereby providing the construction site with extremely low cost. The turn buckle allows the length to be adjusted to match the distance between the safety collar and the bolt cover.

2: steel plate 4: horizontal member
6: vertical member 8: washer
10: Anchor bolt 12: Lifting ring
14: safety collar 16: upper screw rod
18: Turn buckle 20: Lower screw rod
22: bolt cover 24: through hole
26: stopper 28:
30: spring 32: hanger

Claims

A safety ring 14 disposed so as to overlap with the lower portion of the lifting ring fixedly attached to the upper end of the vertical member 6 arranged in a pair;
An upper screw rod 16 extending to the lower end of the safety ring 14;
A turn buckle (18) screwed on the upper screw rod (16) and screwed on the lower screw rod (20) on the lower side;
And is hinge-connected to a fixing piece 28 which is arranged to cover the periphery of an anchor bolt 10 installed between the vertical members 6 and which is attached across the vertical members 6 so as to be vertically opened and closed, A bolt cover (22) having a through hole (26) through which the lower end of the rod (20) is connected;
A spring 30 installed on the fixing piece 28 to pressurize the bolt cover 22 so as to conceal the anchor bolt 10 at all times;
Gang foam with safety lifting device.

The method according to claim 1,
Characterized in that the hanger (32) is fixedly attached to either of the two vertical members (6) around the substantially middle portion of the upper screw rod (16).