JP2009002035A - Foldable working platform and method of assembling the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a working platform which facilitates assembly thereof at the site (working site) in a very short time, and allowed removal thereof from the site (working site) after completion of construction work. <P>SOLUTION: The working platform 10 consists of working platform units. Each working platform unit consists of: a first frame body 11 formed by connecting a plurality of vertical supports 1 spaced an interval away from each other in a depth direction, by connection members 3; a second frame body 12 formed by connecting the vertical supports spaced the interval away from each other in the depth direction corresponding to the vertical supports of the first frame body, by the connection members; and connection members 2, 2a foldably connecting between the first frame body and the second frame body in a width direction orthogonal to the depth direction. Then the working platform units thus formed are arranged side by side in the width direction and loaded in a carrying vehicle in a folded state to be transported to the working site where the working platform is used. At the working site, a folding portion of each platform unit is extended, and the connection members 2, 2a are connected to the frame bodies. Further a space between the working platform units is extended in the width direction, and the working platform units are connected together by the connection members 2a, to thereby construct the working platform 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a gantry. More specifically, as a temporary work space at a construction site such as a building, a gantry used for operations such as root cutting, mountain retaining, erection / disassembly, steel frame / frame construction, etc. The present invention relates to a foldable gantry in which work can be performed safely and smoothly.

  Conventionally, in a construction site or the like, a gantry is widely installed as a temporary work space. Conventionally, these gantry units are assembled by bringing steel materials such as H-shaped steel constituting the gantry into the site (working site) and bolting the steel materials at the site (working site).

  As an example, the work platform (stationary table) installed in the pit will be described. A lower girder material in the width direction is installed in parallel on the bottom of the pit, and a plurality of upper girder materials are arranged in the depth direction on the lower girder material. And fasten it with a connecting jig, bolt the bottom end of the vertical column at the both ends of the upper girder in the depth direction to the upper girder, and place a large depth in the upper part of the column facing the depth. Pass the pulling material, fasten the upper span girder with bolts, place the joists extending in the width direction on the upper girders, stop them on the upper girders with the connecting jig, and put the lining board on the joists The gantry is completed by installing.

  Due to such assembling work, the work time at the site (work site) takes a long time, and during that time, it is not possible to proceed to the next building work process, and there is a problem that the total building work time is extended.

  Similarly, it is necessary to remove this gantry after the building construction work has been completed. At this time, the gantry is disassembled into individual parts in the reverse order of the above procedure at the work site, and then removed. Therefore, the work was extremely time consuming.

  In order to solve such a conventional problem, Patent Document 1 (Japanese Patent Laid-Open No. 8-105212) discloses a temporary gantry by using an adjacent narrow empty space without providing an assembly yard in a building site. Can be installed safely and quickly, a fixed base or swivel is installed on the adjacent site on one side of the building site, and the construction beam is vertically assembled on the fixed base or swivel, with the base beam at the center. Laid horizontally in the upper space of the construction site, fixed the tip of the construction beam to the temporary cradle of the adjacent site on the other side, and installed the temporary construction platform based on the construction beam placed across the construction site. It is proposed to assemble.

  Patent Document 2 (Japanese Patent Application Laid-Open No. 2000-80804) makes it easy to assemble and disassemble the loading gantry, and to disassemble, move, and reassemble the loading gantry when the construction plan is changed during construction. As a method to make it easy to perform, vertically arranged support columns are arranged in parallel in the horizontal direction with a predetermined interval, and the upper part of the arranged support columns is overdrawn, and the bottom girder is spanned. A plurality of units constructed as described above are assembled. Next, mat concrete is placed on the excavated ground, and the position where the unit is installed on the mat concrete is marked. Next, after fixing the floor girder of the unit to the place where it has been marked with chemical anchors, the units are connected to each other by a cross member and a streak. Finally, a method has been proposed in which a joist is temporarily installed on the large pull of the unit and a lining plate is laid thereon.

Patent Document 3 (Japanese Patent Application Laid-Open No. 2006-144238) discloses a foundation for a crane gantry in which the foundation can be reused in consideration of the surrounding environment while saving the construction cost when the ground is soft. As a foundation for a crane gantry in which the ground is excavated, an improved ground is built up from the excavated root bottom, a foundation is built directly on it, and a crane gantry is installed directly on the foundation Has been proposed.
JP-A-8-105212 JP 2000-80804 A JP 2006-144238 A

  Since each member of the conventional gantry is carried to the site (work site) and assembled at the site (work site), it takes a very long time. Moreover, since it was taken out after being disassembled into each member at the site (work site) at the time of removal, it took time.

  Moreover, according to the temporary gantry construction method of patent document 1, work can be quickly performed on the spot (work site). However, it took time because the gantry was assembled at the site (work site).

  Similarly, in the construction method of the loading gantry disclosed in Patent Document 2 and Patent Document 3, individual units are created at the assembly site, and the units are assembled. For this reason, when carrying in, since each member which comprises a gantry is mounted in a vehicle, and it carries in and assembles on the spot (working site), it still took time for work. If a unit is made in a factory to carry out this method, and it is attempted to be brought into the site (work site) for assembly, the large unit is transported, so the transport efficiency is low and not suitable for practical use.

  The present invention takes a lot of work time at the site (work site) in accordance with the conventional method of bringing the components of the individual gantry as described above into the site (work site) and assembling there. In view of the problem that the work time is extended, the gantry can perform assembly work at the site (work site) in a very short time, and can also be quickly removed from the site (work site) after the completion of construction work. The purpose is to provide.

  In the present invention, a first frame formed by connecting a plurality of vertical columns spaced in the depth direction with a connecting member, and corresponding to the plurality of vertical columns of the first frame in the depth direction. A frame unit comprising a second frame body connected by a connection member at an interval and a connection member that connects the first frame body and the second frame body so as to be foldable in a width direction orthogonal to the depth direction is configured. The above object is achieved by a foldable gantry characterized in that a plurality of gantry units are provided in the width direction.

  In this case, as a method for allowing a plurality of gantry units to be folded in the width direction, a plurality of foldable units may be connected in advance to auxiliary connecting members that can be folded in the width direction. When the foldable gantry unit is assembled, the auxiliary connecting member may be connected to the gantry unit to assemble a plurality of gantry units in the width direction.

  It is preferable to detachably attach a top board that covers the first frame body and the second frame body that are open in the depth direction and the width direction at the upper part of the vertical column of the gantry thus assembled. In order to easily and reliably attach and detach the top plate, it is preferable that the top plate is provided with a detachable protrusion on the upper end portion of the vertical column, and the protrusion is attached to the vertical column.

  In the gantry of the present invention, it is preferable that a height adjusting member capable of adjusting the height appropriately according to the site (work site) is mounted on the lower end of the gantry.

  Furthermore, the present invention provides a first frame formed by connecting a plurality of vertical columns spaced in the depth direction with a connecting member, and the depth direction corresponding to the plurality of vertical columns of the first frame A plurality of gantry units comprising a second frame body connected by a connecting member with a space therebetween, and a connecting member that foldably connects the first frame body and the second frame body in a width direction orthogonal to the depth direction. Prepare each piece, mount each gantry unit in a folded state on a transport vehicle, transport it to the site where the gantry is used, and connect the connecting member by extending the folding part of each gantry unit at the site. In addition, the above object is achieved by a method for assembling a foldable gantry characterized in that a plurality of gantry units are extended and connected in the width direction.

  More preferably, the method of the present invention corresponds to a first frame formed by connecting a plurality of vertical columns spaced in the depth direction by a connecting member, and a plurality of vertical columns of the first frame. And a connecting member that connects the first frame and the second frame so as to be foldable in a width direction perpendicular to the depth direction. Prepare a plurality of gantry units, stack each gantry unit in a folded state, mount it on a vehicle, transport it to the site where the gantry is used, and frame the upper side of the stacked gantry unit at the site The folding unit is extended to connect the connecting members, and the plurality of gantry units are extended and connected in the width direction to form a horizontal gantry, and the horizontal gantry is rotated by 90 ° and installed. Install the gantry in the installation direction on site. Can be a method of assembling foldable gantry, characterized in that.

  According to the present invention, a foldable gantry is mounted on a transport vehicle in a folded state, transported to a site (working site), and the folded gantry is extended at the site (working site) to easily assemble the gantry. be able to. Therefore, the work time at the work site (work site) can be extremely shortened, the gantry installation time in the construction work can be shortened, the total construction time can be shortened, and the work efficiency is greatly improved.

  Further, according to the present invention, when assembling a folded gantry at the site (working site), it can be done very easily by extending the folded part, so the time for gantry installation is extremely shortened and the work efficiency of the gantry installation is extremely high To be improved.

  Further, according to the present invention, the removal of the gantry after the construction work is completed can be removed in a very short time by performing the reverse procedure to the time of installation of the gantry, and the total construction work time can be shortened. Can do.

  According to the present invention, the construction cost can be reduced.

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings illustrating embodiments of the present invention. FIG. 1 is a perspective view of an embodiment of a gantry according to the present invention, and FIG. 2 shows a front view, a top view, and a side view of the gantry shown in FIG.

  As shown in FIGS. 1 and 2, a gantry 10 according to the present invention basically has the same structure as a conventional gantry. That is, the vertical columns 1 oriented in the vertical direction are made of round pipes, square pipes, H-shaped steel, or the like, and these vertical columns 1 are erected at predetermined intervals in the width direction and the depth direction.

  The two vertical pillars 1 at the left and right ends in the width direction are connected by a connecting member 2, and the middle two vertical pillars are connected by a connecting member 2a. In addition, oblique lines 4 are inserted between the two vertical columns at the right end and between the two vertical columns 1 at the left end.

  Further, the vertical columns 1 in the depth direction are connected by a connecting member 3. Further, diagonal lines 5 are inserted between the vertical columns 1 in the depth direction. In this way, the gantry 10 is formed as a whole on the gantry 10 made of pipes or H-section steel.

  A top 20 is placed on the gantry 10. The ceiling 20 used in the present invention can be larger than the lining plate used in the conventional gantry, and the strength of the gantry 10 as a whole can be increased by covering the gantry 10 with the large ceiling 20. There is also an effect of increasing.

  2B and 2D is a ladder for inspecting the lower interior of the gantry 10, and an operator opens the hatch 20a of the top 20 and lifts the ladder 30 to raise and lower the gantry 10. The lower interior can be inspected.

  The gantry 10 according to the present invention is configured by connecting a plurality of foldable gantry units in the width direction.

  Each gantry unit includes a first frame 11 formed by connecting a plurality of vertical columns 1 (two in the embodiment of FIGS. 1 and 2) spaced in the depth direction by connecting members 3, and a first frame 11. Corresponding to the plurality of vertical pillars 1 of the frame 11, the second frame 12 connected by the connecting member 3 at intervals in the depth direction, and the first frame 11 and the second frame 12 are connected in the width direction. And a connecting member 2 that is foldably connected.

  In the embodiment shown in FIGS. 1 and 2, the first frame body 11 and the second frame body 12 are provided with diagonal crosses 5, and the first frame body 11 and the second frame body 12 are inclined. Intersection 4 is provided.

  In such a gantry unit, the connecting member 2 that connects the first frame body 11 and the second frame body 12 is pivotally connected to the vertical column 1 and can be rotated when the tightening bolt is loosened.

  In addition, the diagonal cross 4 that connects the first frame body 11 and the second frame body 12 can be removed from the vertical column 1 at the lower end and the vertical column at the upper end by removing the fastening bolt. 1 is pivotally attached to 1.

  Because of this structure, the gantry unit can be rotated by loosening the fastening of the connecting member 2, and when the lower end of the cross 4 is removed from the vertical column 1, The two frame bodies 12 can be relatively moved in the height direction in FIGS. 1 and 2, and as shown in FIG. 3B or FIG. 4B, the first frame body 11, the second frame body 12, Are adjacent to each other, that is, in a folded state.

  The gantry of the embodiment shown in FIGS. 1 and 2 is composed of two gantry units. When viewed from the front, the two gantry units are connected by a connecting member 2a, and are further seen in a plan view (see FIG. 3A). Two gantry units are connected by crossing 9. The connecting member 2a is pivotally connected to the vertical column 1 in the same manner as the connecting member 2, and can be rotated when the fastening bolt is loosened, or can be removed from the vertical column 1 when the fastening bolt is removed. Similarly, the cross 9 is a structure that can be rotated when the fastening bolt is loosened, or a structure that can be removed from the vertical column 1 by removing the fastening bolt.

  Two embodiments of the foldable gantry according to the present invention are shown in FIGS. 3 and 4, respectively.

  A first embodiment will be described with reference to FIG. FIG. 3 shows a state in which the gantry shown in FIG. 1 is folded in the width direction and placed sideways so that it can be easily mounted on a vehicle, (a) is a top view, and (b) is a front view.

  In FIG. 3A, a first frame 11 in which two vertical columns 1 spaced in the depth direction are connected by a connecting member 3 and a cross 5 and a vertical column 1, a connecting member 3, and a cross The second frame 12 made of 5 is shown shifted in the lateral direction (height direction in FIG. 1). Then, as shown in FIG. 3 (b), in each gantry unit, the fastening bolts at both ends of the connecting member 2 are loosened to loosen the connection of the connecting member 2, and one bolt of the cross 4 is loosened, and the other bolt Has been removed and folded. The two gantry units folded in this way are stacked one above the other.

  The two upper and lower gantry units that can be folded in the width direction are connected by the auxiliary connecting member 2a that can be folded in the width direction in the embodiment of FIG.

  On the other hand, in the embodiment shown in FIG. 4, the fastening bolt is removed and the auxiliary connecting member 2a is removed without being attached to the gantry unit, and the auxiliary connecting unit 2a is attached to the upper and lower gantry units at the time of assembly. It is different in that it is tightened and assembled.

  The foldable gantry of the embodiment of the present invention shown in FIG. 3 is mounted on a transport vehicle (transport truck) in a state of being folded up and down as shown in FIG. 3 and transferred to the work site (work site). In this case, the mounted state is the state of FIG. 3B when viewed from the side, and the state of FIG. 3A when viewed from above.

  When arriving at the work site (work site), as shown in FIG. 5, the lifting wire 6 is hung on the uppermost part of the gantry and is gradually lifted up by the crane. Reference numeral 7 denotes a bracket for stopping the upper and lower gantry units being transported, and the bolts are removed before being lifted by the crane.

  In the middle of lifting, when the foldable connecting member 2 between the first frame and the second frame of the upper gantry unit is in a vertical state, the bolts of the connecting member 2 are tightened to The first frame and the second frame are firmly connected, and the upper gantry unit is in an open connection state as shown in the upper side of FIG. Further, similarly, the auxiliary connecting member 2a between the two gantry units is tightened, and the foldable connecting member 2 between the first frame body and the second frame body of the lower gantry unit is in a vertical state. When the upper and lower first frame and second frame are firmly connected by tightening the bolts of the connecting member 2, the lower gantry unit is opened as shown in the lower part of FIG. State. In this way, the upper and lower gantry units are connected and securely fastened, resulting in a state as shown in FIG.

  In this case, in the upper gantry unit and the lower gantry unit, the first frame body and the second frame body are connected to each other by oblique crossing 4, but the front view of FIG. The diagonal crossing between visible gantry units is omitted. It should be noted that crossing 9 is provided between intermediate gantry units that can be seen in the plan view of FIG.

  It is preferable that the crossings 4, 5, and 9 of this embodiment have turnbuckles so that the compression / tensile strength can be adjusted.

  In the state of FIG. 6, the gantry 10 is moved to the site (working site) by a crane, and the whole of the state of FIG. 6 is rotated by 90 ° so as to be below the gantry, and the state of FIG. And A top view of this state is shown in FIG. If necessary, the height adjusting member 8 is attached to the lower end of the vertical column of the gantry.

  As described above, the gantry may be moved to the site (working site) with the gantry open as shown in FIG. 6, but the site (working site) with the folded gantry unit stacked one above the other. Then, the gantry unit may be opened to the state shown in FIG. 6 by the same procedure as described above.

  In the embodiment shown in FIG. 4, since the auxiliary connecting member between the gantry units is removed, as shown in FIG. 7, the upper gantry unit is hung on the upper gantry unit and the upper gantry unit is lifted. Then, the upper gantry unit is configured by tightening and tightening the bolts of the connecting member 2 of the upper gantry unit. The figure mentioned above by connecting the auxiliary connecting member 2a between the lower end of the upper gantry unit and the upper end of the lower gantry unit, and further connecting the lower gantry unit and the auxiliary connecting member 2a while lifting. 6 is the same state. Thereafter, the gantry is made by turning 90 ° in the same manner as described above.

  In the embodiment shown in FIG. 4 as well, the gantry unit may be opened and moved to the work site (work site) in the same manner as the embodiment shown in FIG. It is also possible to move to the work site (work site) in a state where they are stacked one above the other and open the gantry unit there to form the gantry.

  FIG. 9 shows an embodiment of the height adjusting member 8 used in the present invention. The height adjusting member 8 is the same as the vertical column 1, for example, a round pipe, a square pipe or H-shaped steel is used to make the height adjusting member 8 of a predetermined length necessary for the gantry, and an appropriate shape such as a square is formed on the upper and lower ends thereof. The plates 8a and 8b are fixed. In addition, a plate 1 a having an appropriate shape such as a square is fixed to the lower end of the vertical column 1. Each of the square plates 1a and 8a is formed with an appropriate number (four in the embodiment) of bolt holes 8c penetrating the fastening bolts.

  The height adjusting member can be fixed to the lower end of the vertical column 1 by overlapping the plate 1a at the lower end of the vertical column 1 and the plate 8a at the upper end of the adjusting member and connecting them with bolts passed through the bolt holes 8c. . The plate 8b at the lower end of the height adjusting member 8 makes it easy to fix the gantry 10 on the site (working site).

  FIG. 10 shows an embodiment of the top 20 used in the present invention. The top 20 is provided with conical-shaped projections 21 in a downward direction corresponding to the number of the vertical columns 1, and the projections 21 are provided at positions corresponding to the positions of the vertical columns 1. It fits into the upper cylindrical part.

  An appropriately shaped horizontal plate 1a such as a quadrangle is secured to the position slightly below the upper end surface of the vertical column 1 by welding or the like. When the projection 21 of the top 20 is fitted into the circular hole of the cylindrical portion 1b at the top of the vertical column 1, the weight of the top 20 is received at the upper end surface of the cylindrical portion 1b of the vertical column 1, and the upper end The top end of the projection of the top 20 is lightly touched to the upper surface of the horizontal plate 10a provided near the top so that the top 20 does not move left and right.

It is a perspective view which shows the assembly state of one Example of the gantry which concerns on this invention. 1 shows a foldable gantry of the present invention shown in FIG. 1, wherein (a) is a front view, (b) is a top view, (c) is a front view of the upper plate shown in (b), and (d) is (a). FIG. 4E is a side view of the gantry shown in FIG. 1 shows a first embodiment of a foldable gantry according to the present invention, in which (a) is a top view and (b) is a front view of a vehicle mounted state. 2 shows another embodiment of a foldable gantry according to the present invention, in which (a) is a top view and (b) is a front view of a vehicle mounted state, which is disassembled up and down on the gantry. The first embodiment shown in FIG. 3 or the foldable gantry of the embodiment shown in FIG. The state which assembles the foldable base from the state shown in FIG. 5 is shown. Fig. 5 shows an assembled state of the embodiment shown in Fig. 4. The installation state of the Example of the gantry based on this invention is shown, (a) is a top view, (b) is a front view. An example of the height adjustment member used for the present invention is shown. An example of the top used in the present invention is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vertical column 2, 2a Connecting member 3 Connecting member 4, 5 Diagonal 6 Lifting wire 7 Metal fitting 11 1st frame 12 2nd frame 10 Gantry 20 Top plate

Claims (12)

  A first frame formed by connecting a plurality of vertical columns spaced in the depth direction with a connecting member, and connected with a space in the depth direction corresponding to the plurality of vertical columns of the first frame A gantry unit comprising: a second frame body coupled by a member; and a coupling member that foldably couples the first frame body and the second frame body in a width direction orthogonal to the depth direction.   A first frame formed by connecting a plurality of vertical columns spaced in the depth direction with a connecting member, and connected with a space in the depth direction corresponding to the plurality of vertical columns of the first frame A second frame body connected by a member, and a gantry unit including a connection member that foldably connects the first frame body and the second frame body in a width direction orthogonal to the depth direction, A foldable gantry characterized in that a gantry unit is provided in the width direction.   A first frame formed by connecting a plurality of vertical columns spaced in the depth direction with a connecting member, and connected with a space in the depth direction corresponding to the plurality of vertical columns of the first frame A second frame body connected by a member, and a foldable gantry unit comprising a connecting member that foldably connects the first frame body and the second frame body in a width direction perpendicular to the depth direction, A foldable gantry characterized in that the foldable gantry units are connected by an auxiliary connecting member that can be folded in the width direction.   A first frame formed by connecting a plurality of vertical columns spaced in the depth direction with a connecting member, and connected with a space in the depth direction corresponding to the plurality of vertical columns of the first frame A second frame body connected by a member, and a foldable gantry unit comprising a connecting member that foldably connects the first frame body and the second frame body in a width direction perpendicular to the depth direction, A foldable gantry characterized in that the plurality of gantry units are connected in the width direction by auxiliary connecting members that are detachable to the foldable gantry units.   A top panel that covers the first frame and the second frame that are open in the depth direction and the width direction is detachably provided at an upper end portion of the vertical column. Item 5. The foldable gantry according to any one of Items 2 to 4.   6. The foldable gantry according to claim 5, wherein the top has a protrusion that can be attached to an upper end of the vertical column.   The foldable gantry according to any one of claims 2 to 6, wherein a height adjusting member can be attached to a lower end portion of the vertical column.   A first frame formed by connecting a plurality of vertical columns spaced in the depth direction with a connecting member, and connected with a space in the depth direction corresponding to the plurality of vertical columns of the first frame Preparing a plurality of gantry units comprising a second frame connected by members and a connecting member for connecting the first frame and the second frame so as to be foldable in a width direction perpendicular to the depth direction; The gantry unit is mounted on the transport vehicle in a folded state, transported to the site where the gantry is used, and the fold part of each gantry unit is extended at the site to connect the connecting members and a plurality of gantry units. A method for assembling a foldable gantry characterized in that the space is extended and connected in the width direction.   A first frame formed by connecting a plurality of vertical columns spaced in the depth direction with a connecting member, and connected with a space in the depth direction corresponding to the plurality of vertical columns of the first frame Preparing a plurality of gantry units comprising a second frame connected by members and a connecting member for connecting the first frame and the second frame so as to be foldable in a width direction perpendicular to the depth direction; Stacking the gantry unit in a folded state and mounting it on the vehicle, transporting it to the site where the gantry is used, lifting the upper frame of the stacked gantry unit at the site and extending the folding part, A connecting member is connected and a plurality of gantry units are extended and connected in the width direction to form a horizontal gantry, and the horizontal gantry is rotated by 90 ° to set the installation state. A foldable structure characterized by installing a gantry on site Method of assembling.   The method of assembling a foldable gantry according to claim 8 or 9, wherein the plurality of foldable gantry units are connected by an auxiliary connecting member so as to be foldable in the width direction.   10. The assembly of the foldable gantry according to claim 8 or 9, wherein the plurality of gantry units are connected in the width direction by an auxiliary connecting member that can be attached to and detached from the plurality of foldable gantry units. Method.   The foldable body according to any one of claims 8 to 11, wherein a top plate that covers the upper ends of the plurality of gantry units in the installed state is attached to upper ends of the vertical columns. To assemble a gantry.

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