Working gondola unit

Abstract

To enable installing a working gondola unit stably on a temporary building such as a working platform.SOLUTION: A working gondola unit of this invention comprises: a gondola; a support frame with a first steel member that serves as a rail for the gondola and a support steel member that supports the first steel member; and an adjusting steel member. The adjusting steel member is positioned in the support frame to protrude from any part of the support frame that faces a temporary building. It is also removable from the support frame, and is installed on the upper surface of the temporary building.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an improvement to a gondola unit for work. [Background technology]

[0002] A work platform, which is an example of a temporary structure, is used as a walkway or construction scaffolding for transporting workers, construction machinery, materials, etc. from the shore or mountain slopes during the construction of a bridge, etc. Since such a work platform is temporary, it is dismantled after the construction of the bridge, etc. is completed. A work gondola unit (hereinafter, sometimes simply referred to as a gondola unit) for use in demolishing such temporary buildings has been proposed (Patent Document 1). This gondola unit comprises a gondola and a support frame for the gondola. The support frame is a box-shaped structure made of steel materials, and a slider that can move in the axial direction is arranged on the upper beam. The gondola is suspended from the slider via a wire. A wire winding device is arranged inside the gondola to adjust the up and down position of the gondola. Please also refer to Patent Documents 2 and 3 as prior art documents disclosing techniques related to this invention. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4690383 [Patent Document 2] Patent No. 4109637 [Patent Document 3] Patent No. 6261089 Summary of the Invention [Problem to be solved by the invention]

[0004] The above gondola unit had the following issues: The temporary structure on which the gondola units are to be installed must be constructed exactly according to the blueprints, but misalignment in the vertical and horizontal directions may occur on-site. On the other hand, even if the support frame of the gondola unit is designed to match the blueprints of the temporary building, if there is a misalignment in the counterpart temporary building at the site, the gondola unit cannot be installed stably on it. Since the gondola unit is installed at a high place, it is important to ensure the safety of the workers inside the gondola. As part of the safety measures, it is required to bring the gondola as close as possible to the work target (materials that make up the temporary building (beams, columns, braces, etc.)) so that the workers can work safely. When the support frame of the gondola unit is a box-shaped structure made of steel materials, when installing or removing components of a temporary building that are placed below the support frame, it was necessary to pass these components through the support frame. [Means for solving the problem]

[0005] The present inventors have conducted intensive research to solve at least one of the above problems and have arrived at the present invention. That is, the first aspect of the present invention is defined as follows. A gondola unit for performing work on temporary buildings, Gondola and A support frame including a first steel member that serves as a rail of the gondola and a support steel member that supports the first steel member; and an adjustment steel material; The adjustment steel is arranged to protrude from any part of the support frame facing the temporary building, and is detachable from the support frame and placed on the upper surface of the temporary building. Working gondola unit.

[0006] According to the gondola unit of the first aspect configured in this way, even if the temporary building is misaligned, the misalignment can be absorbed by attaching the adjustment steel to any part of the support frame and placing it on the erected building. That is, the horizontal misalignment of the temporary building can be absorbed by adjusting the horizontal protrusion of the adjustment steel. Also, to absorb the vertical misalignment of the temporary building, the attachment part of the adjustment steel to the support frame is adjusted vertically. The length of the support frame is also limited due to the truck loading length limit. On the other hand, in temporary buildings, the distance between the columns may be longer than the length of the support frame. Even in such cases, the support frame can be stably placed on the temporary building by using adjustment steel.

[0007] A gondola unit according to a second aspect of the present invention is defined as follows. In the gondola unit defined in the first aspect, each steel member constituting the support frame has a box-shaped framework structure. According to the gondola unit of the second aspect defined in this way, the support frame is made of a box-shaped framework, so that a mechanically stable support frame can be obtained. Reinforcing columns, beams, or braces can be provided at any position in the box-shaped framework.

[0008] A gondola unit according to a third aspect of the present invention is defined as follows. In the gondola unit according to the first aspect, the first steel member is provided with a slider that can move in its axial direction, and the gondola is suspended from the slider by a suspension member; The hanging member is connected to a winding device within the gondola. According to the third gondola unit defined in this way, the gondola unit can be moved arbitrarily in the horizontal and vertical directions.

[0009] A fourth aspect of the present invention is defined as follows. A gondola unit for performing work on temporary buildings, Gondola and A support frame including a first steel member that serves as a rail for the gondola and a support steel member that supports the first steel member; A gondola unit in which the support steel material is assembled in a U-shape when viewed from the axial direction of the first steel material, and the first steel material is attached to the upper tip side of the support frame.

[0010] According to the gondola unit of the fourth aspect thus defined, since the support frame is a U-shaped framework structure, the members (pillars and beams) that make up the support frame are not present on the open side of the U-shape. If such members exist, they would get in the way of work when they are between the worker and the temporary structure. In other words, by eliminating these members, work on the temporary structure becomes easier. Furthermore, when attaching or removing a member disposed below the support frame, the member can be moved from the open side of the U-shape. The support frame adopted in this aspect has a structure in which one side of the box-shaped frame structure is removed, thereby achieving a reduction in weight of the support frame itself. In this specification, the "U-shaped" supporting steel members refers to a structure in which upper and lower supporting steel members protrude from the top and bottom of the vertical column, respectively. This also includes structures in which upper supporting steel members protrude from both sides of the top of the vertical column, and structures in which lower supporting steel members protrude from both sides of the bottom of the vertical column.

[0011] A gondola unit according to a fifth aspect of the present invention is defined as follows. In the gondola unit defined in the fourth aspect, a slider is attached to the first steel material so as to be movable in the axial direction of the first steel material, the gondola is suspended from the slider, and the slider is rotatable horizontally relative to the first steel material. As the slider rotates horizontally, the gondola also rotates. At this time, one side of the support frame (the opening side of the U-shape) is open, and the first steel member to which the slider is attached is attached to the upper tip side of the support frame. Therefore, the gondola can rotate freely in accordance with the rotation of the slider. Here, the tip side means that it is on the free end side from the center.

[0012] A gondola unit according to a sixth aspect of the present invention is defined as follows. In the gondola unit defined in the fourth aspect, the pair of support frames are arranged with their open sides facing each other. According to the gondola unit defined in the fifth aspect, the open sides of the support frames are opposed to each other so that the work target is sandwiched between the support frames. This allows work to be performed on the work target from both sides, improving work efficiency.

[0013] A gondola unit according to a seventh aspect of the present invention is defined as follows. In the gondola unit as defined in the fourth aspect, an adjustment steel is further provided, The adjustment steel is arranged to protrude from any portion of the support frame facing the temporary building, is attachable / detachable to the support frame, and is placed on the upper surface of the temporary building. According to the gondola unit of the eighth aspect thus defined, the same effect as that of the first aspect can be obtained. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a bird's-eye view showing an embodiment of a work gondola unit of the present invention. [Diagram 2] FIG. 2 is an enlarged view of a main portion of FIG. [Diagram 3] FIG. 3 is a bird's-eye view showing a work gondola unit according to another embodiment. [Figure 4] FIG. 4 is an enlarged view of the main part of FIG. [Diagram 5] FIG. 5 is a bird's-eye view of the work gondola unit shown in FIG. 3 from another direction. [Figure 6] FIG. 6 is a bird's-eye view showing a work gondola unit according to another embodiment. [Figure 7] FIG. 7 shows the arrangement of the work gondola unit shown in FIG. [Figure 8] FIG. 8 shows the working gondola units shown in FIG. 6 positioned on either side of the temporary building element. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] FIG. 1 shows a usage state of a work gondola unit 1 according to an embodiment of the present invention. The gondola unit 1 comprises a gondola 10 and a support frame 20, and is spanned across a support beam 5 of a platform 3. The gantry 3 is configured as follows: Support beams 5 are attached to the upper ends of multiple columns 4, H-beams 6 are stretched between a pair of support beams 5, 5, and a work plate 7 is laid on top of them. Reference numeral 8 denotes a brace. After removing the work plate 7 and the H-beam 6, the support frame 20 of the gondola unit 1 is spanned between the support beams 5, 5.

[0016] This support frame 20 is a general-purpose one, and has a structure in which a rectangular upper frame 21 and a rectangular lower frame 23 are connected by vertical columns 25. In other words, it is a box-shaped framework structure using H-beams or the like. In the upper frame 21, a pair of first steel members 210 are made of long H-shaped steel members, and a slider 212 is attached thereto so as to be movable in the axial direction. A wire 213 is suspended from the slider 212. As shown in Fig. 2, the wire 213 is wound around a winding device 13 installed on the gondola 10, and the vertical position of the gondola 10 is adjusted by adjusting the winding length.

[0017] In this example, as shown in FIG. 2, adjustment steel members 28 made of H-shaped steel bars protrude outward (in the left-right direction in FIGS. 1 and 2) from vertical columns 25 of the support frame. This adjustment steel material 28 is placed on the support beam 5 of the platform 3 . By protruding the adjustment steel material 28, the gondola unit 1 can be stably placed between the support beams 5, 5 even if the distance between the support beams 5, 5 in the gantry 3 becomes greater than the length of the support frame 20. The adjustment steel material 28 is detachable from the vertical pillars 25. For example, when the support beam 5 is inclined, the support frame 20 can be kept horizontal by shifting the mounting positions of the adjustment steel material 28 on each vertical pillar 25 of the support frame 20 up or down.

[0018] In the drawings, 281, 281 are fixed plates, which are fixed to the vertical pillar 25 by screw members 283. The adjustment steel material 28 fixed to the outer fixed plate 281 protrudes outward. The position of the fixed plate 281 can be adjusted by loosening the screw members 283. In addition, the adjustment steel material 28 can be attached and detached to the vertical pillar 25 by removing and tightening the screw members 283.

[0019] Fig. 3 shows a gondola unit 100 according to another embodiment. The same elements as those in Figs. 1 and 2 are designated by the same reference numerals and their description will be omitted. The support frame 120 of this gondola unit 100 includes steel members 123 and 124 constituting the lower frame, a vertical pillar 125, and a steel member 127 constituting the upper frame, and is framed so as to form a U-shape when viewed from the axial direction of the first steel member 210. The steel members 123, 124, 125, and 127 are supporting steel members that support the first steel member 210. By making the support frame 120 an open type, it becomes possible to rotate the gondola 10.

[0020] 4 and 5 show the mechanism for rotating the gondola 10 in detail. As shown in Figures 4 and 5, a slider 212 is arranged on a first steel material 210 made of H-beam, and this slider 212 has a trolley 2121, which is fitted into the flange portion of the first steel material 210 made of H-beam, enabling the first steel material 210 to move in the axial direction.

[0021] A holding plate 2125 is rotatably attached to the trolley 2121 via a rotating plate 2123. The holding plate 2125 has the same width as the gondola 10, and the upper ends of the wires 213 are fixed to both ends of the holding plate 2125. Since the wires 213 are connected to both ends of the gondola 10, the rotation of the holding plate 2125 enables stable rotation of the gondola 10. Here, since the first steel material 210 is attached to the free end side of the steel material 127 that constitutes the upper frame, interference with the supporting steel materials that support the first steel material 210, particularly the vertical pillars 125, can be avoided, and the rotational freedom of the gondola 10 is ensured.

[0022] Fig. 6 shows a gondola unit 300 according to another embodiment. Note that the same elements as those in Fig. 3 are given the same reference numerals and their explanation will be omitted. In this example, the vertical columns 325 of the support frame 320 are inclined, which makes it easier to secure a space for the gondola 10 to rotate. Fig. 7 shows the opposing arrangement of the gondola units 300, 300 of Fig. 6. The open sides of the support frames 320, 320 are opposed to each other with a gap G provided therebetween.

[0023] 8 shows the state where the brace 8 of the gantry 3 is placed in this gap G. In this way, by placing a pair of gondola units 300, 300 on both sides of a member of a temporary building such as the gantry 3, multiple workers can work on the member simultaneously and cooperatively. This not only improves work efficiency, but also reduces the burden on each worker and improves work safety.

[0024] The present invention is not limited to the above-described embodiment and drawings, and any design changes are possible within the scope of understanding of those skilled in the art. [Explanation of symbols]

[0025] 1, 100, 300 Work gondola unit 10. Gondola 20, 120, 320 Support Slots 28 Adjustment steel 210 1st steel material 212 Slider

Claims

1. A gondola unit for performing work on temporary buildings, Gondola and A support frame including a first steel member that serves as a rail of the gondola and a support steel member that supports the first steel member; and an adjustment steel material; The adjustment steel is arranged to protrude from any part of the support frame facing the temporary building, and is detachable from the support frame and placed on the upper surface of the temporary building. Working gondola unit.

2. 2. The unit according to claim 1, wherein each of the steel members constituting the support frame has a box-shaped frame structure.

3. The first steel member is provided with a slider that is movable in its axial direction, and the gondola is suspended from the slider by a suspension member; The unit of claim 1 , wherein the suspension member is connected to a winding device within the gondola.

4. A gondola unit for performing work on temporary buildings, Gondola and a support frame including a first steel member that serves as a rail of the gondola and a support steel member that supports the first steel member; The support frame is assembled in a U-shape when viewed from the axial direction of the first steel material, and the first steel material is attached to the upper tip edge of the support frame.

5. 5. The unit according to claim 4, wherein a slider is attached to the first steel member so as to be movable in the axial direction of the first steel member, the gondola is suspended from the slider, and the slider is rotatable horizontally relative to the first steel member.

6. The unit according to claim 4 , wherein a pair of said support frames are disposed with their open sides facing each other.

7. An adjustment steel is further provided, The adjustment steel is arranged to protrude from any part of the support frame facing the temporary building, and is detachable from the support frame and placed on the upper surface of the temporary building. A unit as claimed in claim 4.

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