Abstract:
A cage for construction work is provided with an extendable function. More particularly, a cage for construction work with an extendable function is provided which is formed so as to have both extendibility and safety by allowing for lateral extension of a cage used in finish work for the outer wall of a structure when constructing the structure and integrally forming a guard net for preventing falls on an upper part thereof.

Description:
CROSS-REFERENCE TO RELATED U.S. APPLICATIONS 
       [0001]    Not applicable. 
       STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
       [0002]    Not applicable. 
       NAMES OF PARTIES TO A JOINT RESEARCH AGREEMENT 
       [0003]    Not applicable. 
       REFERENCE TO AN APPENDIX SUBMITTED ON COMPACT DISC 
       [0004]    Not applicable. 
       BACKGROUND OF THE INVENTION 
       [0005]    1. Field of the Invention 
         [0006]    The present invention relates, in general, to a cage for construction work with an extendable function and, more particularly, to a cage for construction work with an extendable function, which is formed so as to have both extendibility and safety by allowing for lateral extension of a cage used in finish work for the outer wall of a structure when constructing the structure, and integrally forming a guard net for preventing falls from an upper part thereof. 
         [0007]    2. Description of Related Art 
         [0008]    Including Information Disclosed Under 37 CFR 1.97 and 37 CFR 1.98. 
         [0009]    Recently, it is a general trend that, in regions such as cities in which the density of the structures is high and the land is also expensive, the demand for increasing the number of floors of the structure is sharply increasing so that the land can be effectively used. 
         [0010]    As such, as the number of floors of the structures increases, there is a risk that various construction materials, working tools, dust, etc. can fall down from the interior of the structure to the outside thereof during the construction work. Accordingly, in order to prevent human damage, property damage and environmental pollution due to such a sudden falling or dropping trouble, various type of safety guard nets are already used in the art. 
         [0011]    In using such a safety guard net for construction work, a method for binding a tent or a dust proof net to the outer side of the framework of the structure or installing a frame on the outer side and then fixing a dust proof net to the frame, etc. is mainly adapted. 
         [0012]    Furthermore, as is well known in the art, in construction methods for large scale structures such as apartments, buildings or hospitals, low regions (first to third floors) are firstly constructed using a normal mould. A cage for the mould is mounted on the structures using a tower crane, and then concrete is poured to construct the large scale structure while moving the cage upward. 
         [0013]    Then, in order to improve the urban view by variously modifying the outer wall of the structures and to receive effectively natural lighting, only the frame and slab works which erect the framework of the structures are done using concrete, and the other parts of the structures are separately constructed using exterior finishing material such glass for the finishing work. 
         [0014]    As an example of the finishing work of the structures mentioned above, a structure construction method (Korea Patent No. 895614) invented by the present applicant is disclosed. This structure construction method includes a construction method (SWC; Safety Working Cage) in which a process for constructing the framework of the structure by pouring concrete and a process for finishing the outer wall of the structure are simultaneously performed at intervals of two floors or three floors. Equipment capable of protecting workers doing finishing work on the lower floors is required by the above construction method. 
         [0015]    Further, the cage used for finishing work can be obtained by modifying the cage for pouring concrete. Therefore, there is a problem that the working space is limited and thus not enough working space can be secured for the worker doing the finishing work to work smoothly. 
         [0016]    Further, since there is no safety facility to provide adequate protection against falling things and dust generated from the concrete pouring work in the upper side, the worker working on the lower floors is likely to be damaged by the falling things. 
         [0017]    Recently, various types of structures incorporating a special design have been constructed. For this reason, when constructing the building having the special design at irregular intervals of several floors, a cage for finishing work which can rapidly respond to special design needs is strongly required. 
         [0018]    The present invention is developed in consideration of the problems associated with the related art. An object of the present invention is to provide a cage for construction work with an extendable function, which can rapidly respond to the special design of the structure and, in particular, can rapidly respond to the grooves or protrusions on the outer wall of the structures. 
         [0019]    Further, another object of the present invention is to provide a cage for construction work with an extendable function, which is capable of improving the work environment, allowing the finishing work to be safer and preventing the worker or the workers&#39; tools from falling down, by making a walking plate to be extendable in the cage used for the finishing work such as on a curtain wall of the structures. 
         [0020]    In addition, yet another object of the present invention is to provide a cage for construction work with an extendable function, which is capable of preventing the worker or the workers&#39; tools from falling down a short distance and that can minimize human damage and property damage, by integrally forming a vertical guard net on the upper part of a cage for finish work. 
         [0021]    Further, another object of the present invention is to provide a cage for construction work with an extendable function, which is capable of maximizing the work efficiency by responding suitably to the special design of the structures and being able to undergo self-modification. Also, the cage can reduce the number of cages and material cost by making the cage extendible in a lateral direction, and save on costs related to safety facilities in the work field. 
       BRIEF SUMMARY OF THE INVENTION 
       [0022]    In order to achieve the above objects, according to one aspect of the present invention, there is provided a cage for construction work with an extendible function. The cage includes a frame formed by connecting a vertical bar and a horizontal bar to each other and integrally formed at an upper side thereof with a frame for vertical guard net, a walk plate provided on the upper surface of the horizontal bar, a guard net assembled to the upper and lower surfaces of the frame for the vertical guard net, and an extending frame formed at the lower part of the frame. The extending frame is assembled to the frame so as to move in lateral direction by a slide means. 
         [0023]    According to another aspect of the present invention, an auxiliary walk plate rotating through a hinge and a wire regulating the rotational radius of the auxiliary walk plate are further provided on one side of the extending frame. Thus, the auxiliary walk plate has an extendable function. 
         [0024]    According to yet another aspect of the present invention, the slide means includes a fixing body and a guide rail. The fixing body is assembled to the vertical bar through a bolt insertion hole and includes a rolling wheel at the inner surface thereof. The guide rail surrounds the outer surface of the rolling wheel in a “C” shape and is assembled to a position corresponding to the fixing body outside of the extending frame. 
         [0025]    According to another aspect of the present invention, a set of three fixing bodies are assembled to the outer surface of a pair of corresponding horizontal bars. 
         [0026]    According to yet another aspect of the present invention, the slide means includes an H-shaped guide rail assembled to the lower surface of the horizontal bar and a moving body assembled to the upper surface of the extending frame. The upper wheel of the moving body is slidably assembled to the guide rail while making close contact therewith. 
     
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
         [0027]    The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description when taken in conjunction with the accompanying drawings, in which: 
           [0028]      FIG. 1  is a perspective view illustrating a cage for construction work with an extendable function, according to the present invention; 
           [0029]      FIG. 2  is a perspective view illustrating an extending frame of a cage for construction work with an extendable function, according to the present invention; 
           [0030]      FIG. 3  is a partial magnified perspective view illustrating the frame part of a cage for construction work with an extendable function, according to the present invention; 
           [0031]      FIG. 4  is a magnified view illustrating the “A” portion shown in  FIG. 1 ; 
           [0032]      FIG. 5  is a magnified side view illustrating a slide means of a cage for construction work with an extendable function, according to the present invention; 
           [0033]      FIG. 6  is a side view illustrating another example of the slide means in a cage for construction work with an extendable function, according to the present invention; and 
           [0034]      FIG. 7  is a front view illustrating an application example of the cage for construction work with an extendable function, according to the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0035]    Hereinafter, preferred embodiments of the present invention will be described in details with reference to the accompanying drawings. The embodiments of the present invention can be changed in various forms and thus the present invention is not limited to the embodiments disclosed hereinafter. 
         [0036]      FIG. 1  is a perspective view illustrating a cage for construction work with an extendable function, according to the present invention. 
         [0037]    As shown in  FIG. 1 , a cage  100  (hereinafter, referred to as “cage”) for construction work with an extendable function, according to the present invention, mainly includes a frame  10 , an extending frame  20  and a slide means  30 . A vertical protection frame  11  is integrally formed with the upper part of the frame  10 . The extending frame  20  is movably assembled to the lower part of the frame  10 . The slide means  30  can stably move the extending frame away from the frame  10  in lateral direction. 
         [0038]    The frame  10  has a box form of a rectangular parallelepiped shape formed by connecting a vertical bar  12 , a horizontal bar  13  and a connecting bar  14  to each other, and a walk plate  15  is assembled to the upper surface of the connecting bar  14 , so that workers can easily perform work. 
         [0039]    That is, one box-shaped frame  10  is formed by connecting the vertical bar  12  and the horizontal bar  12  to form a flat plate and connecting a pair of the flat plates to each other by the connecting bar  14 . 
         [0040]    Also, the upper part of the frame  10  is integrally formed with a frame  11  for vertical guard net bent toward the outside of the structure. A guard net  16  is assembled to the frame  11  and the uppermost horizontal bar  13  of the frame  10 , so that a safety facility to prevent dropped things from falling is formed. 
         [0041]    Further, an extending frame  20  capable of moving in lateral direction by the slide means  30  is formed at the lower part of the frame  10 . 
         [0042]    As shown in  FIG. 2 , in the extending frame  20 , a horizontal bar  21 , a vertical bar  22  and a connecting bar  23  are connected to each other so as to form a box form. A walk plate  24  is formed at the bottom surface of the extending frame. And, one or more guide rail  25  on outer side and an auxiliary walk plate on one side are rotatably assembled to each other by a hinge  28 . 
         [0043]    That is, the extending frame  20  in one box form is formed, by connecting the horizontal bar  21  and the vertical bar  22  to obtain two plates and then connecting two plates to each other by the connecting bar  23 , as in the frame  10 . 
         [0044]    In addition, the rotation range of the auxiliary walk plate  26  is regulated by a wire  27  connected to the extending frame  20 . 
         [0045]    Next, the process for sliding the extending frame  20  away from the frame  10  will be explained in detail, by referring to  FIGS. 3 and 4 . 
         [0046]    As shown in  FIGS. 3 and 4 , the slide means  30  is constituted by slidably connecting the rolling wheels  32  of several fixing bodies  31  formed at the lower part of the frame  10  and a guide rail  25  assembled to the outside of the extending frame  20 . 
         [0047]    That is, several fixing bodies  31  are integrally bolted to the lower part of the vertical bar  12  of the frame  10 . Preferably, two fixing bodies are connected to the upper side thereof and one fixing body is connected to the lower side thereof. By doing so, two fixing bodies in the upper side can allow the extending frame  20  to move smoothly in the lateral direction and the one fixing body in the lower side can prevent the extending frame from being shaken, when the extending frame is moved. 
         [0048]    Further, by providing the fixing body  31  only on one place in the lower side, it is possible to prevent the worker&#39;s legs from being interfered with by the rail when the auxiliary walk plate  26  is extended. The fixing body  31  is assembled to the vertical bar  12  of the frame  10  having the box form as mentioned above, and then the extending frame  20  is slidably fitted and assembled to the fixing body from one side thereof. This becomes possible by inserting the rolling wheel  32  of the fixing body  31  into the guide rail  25  formed at the outer peripheral surface of the extending frame  20  for allowing the sliding movement the extending frame  20 . 
         [0049]    In addition, several bolt inserting holes  33  are formed at the back surface of the fixing body  31  so as to surround or penetrate the vertical bar  12  and to assemble firmly the fixing body  31 . 
         [0050]    On the other hand, it is preferred that the guide rail  24  is formed at one side thereof with a separation prevention means (not shown) such as a fixing pin or engaging jaw capable of controlling the lateral movement in order not to be separated from the frame following excessive movement. 
         [0051]      FIG. 6  is a side view illustrating another example of the slide means in a cage for construction work with an extendable function, according to the present invention. 
         [0052]    As shown in figures, a guide rail  41  in a form of “H” is assembled to the lower surface of the horizontal bar  14 , and the rolling wheel  42   a  of the moving body  42  assembled to the upper surface of the extending frame  20  is closely assembled to the outer peripheral surface of the guide rail  41 . 
         [0053]    The slide means  40  as mentioned above can prevent the front and rear parts of the extending frame  20  from being clogged and thus provide a better work environment. 
         [0054]      FIG. 7  is a front view illustrating an application example of the cage for construction work with an extendable function, according to the present invention. As is apparent from  FIG. 7 , the finish work for the space between adjacent cages can be performed with no difficulty, by connecting the extending frame into a space between two cages. 
         [0055]    That is, according to the above embodiment, it is possible to respond rapidly to the special designs of the structures such as protrusions, when the structures are constructed. Accordingly, various types of the structures can be smoothly constructed and additional costs stemming from changing the form of the structures is not generated. 
         [0056]    Further, it is possible to save the installation cost by reducing the number of the cages used when the structures are constructed. And it is also possible to save costs and strengthen the safety facility by assigning the function of a safety guard net to the cage for finish work. 
         [0057]    As apparent from the above description, the cage for construction work according to the present invention provides advantages in that, it is possible to provide a guard net at the safest height and at a location capable of preventing the danger of falls by forming the vertical guard net integrally with the upper part of the cage for finish work, so that the falling of the worker or the workers&#39; tools can be prevented. In particular, it is possible to prevent the worker from falling down and thus to minimize the human harm. 
         [0058]    Further, the cage for construction work according to the present invention provides advantages in that, since the cage includes the extending frame formed at the lower part of the cage and the auxiliary walk plate spread auxiliary for increasing the rotating radius thereof, workers can safely perform the finish work in a state of a maximum amount of work space being secured. 
         [0059]    In addition, the cage for construction work according to the present invention provides advantages in that, since the cage includes the extending frame, the spaces between adjacent cages, can be easily shortened and lengthened by protruding parts of the structure. Accordingly, the work efficiency can be maximized, the number of the cages can be reduced and construction work for the structures having special design needs can be safely performed. 
         [0060]    Although a preferred embodiment of the present invention has been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.