Temporary materials

Abstract

This invention provides temporary materials that allow for the installation of an appropriate work platform even when the spacing between girders is not uniform. [Solution] The temporary material comprises multiple panels, each with multiple joining holes formed on its side, and functions as a work platform by connecting the panels using these joining holes.

Description

Technical Field

[0001] The present invention relates to a temporary material temporarily installed as a work floor.

Background Art

[0002] Patent Document 1 discloses a scaffold board provided on a temporary scaffold. The scaffold board has a width timber attached so as to be able to undulate, and is a scaffolding material for curing the gap between scaffolds. With respect to the scaffold board body, the width timber attached so as to be able to undulate is appropriately fixed in a standing state or a fallen state. Thus, Patent Document 1 attempts to shift to a standing state and a fallen state by a simple operation without using a special tool, and also has a simple structure and is difficult to break.

[0003] Patent Document 2 discloses a manufacturing method for manufacturing an under-highway scaffold having a step of fixing a feeder on a scaffold already installed under an overpass and a step of extending the scaffold while supporting the scaffolding material with the feeder. Thus, Patent Document 2 attempts to realize an under-highway scaffold with good workability.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, Patent Documents 1 and 2 describe scaffolding boards installed on the horizontal beams of the frame scaffolding and scaffolding materials installed between the transverse beams of suspended scaffolding. These materials are installed between horizontal members or transverse beams with both ends of the longitudinal direction of a rectangular planar shape at equal intervals, and multiple such arrangements are made in parallel to form a work platform. Standardized scaffolding materials are used. Therefore, if the spacing between the beams on which the scaffolding materials are installed is not constant, it is difficult to install an appropriate work platform.

[0006] This invention was made to solve the above-mentioned problems and provides a temporary material that allows for the installation of an appropriate work platform even when the spacing between girders is not constant. [Means for solving the problem]

[0007] The temporary material according to the present invention comprises multiple panels, each having multiple joining holes formed on its side, and functions as a work platform by connecting the panels to each other using the joining holes. [Effects of the Invention]

[0008] According to the present invention, a work platform is formed by connecting panels using joining holes formed on the sides. Therefore, by connecting multiple panels using joining holes formed on the sides, an appropriate work platform can be installed even when the spacing between girders is not constant. [Brief explanation of the drawing]

[0009] [Figure 1] This is a schematic diagram showing temporary materials according to Embodiment 1. [Figure 2] This is a schematic diagram showing temporary materials according to Embodiment 1. [Figure 3] This is a top view showing the panel according to Embodiment 1. [Figure 4] This is a bottom view showing the panel according to Embodiment 1. [Figure 5] This is a side view showing a panel according to Embodiment 1. [Figure 6]This is another side view showing the panel according to Embodiment 1. [Figure 7] These are a top view, a side view, and a rear view showing the first panel according to Embodiment 1. [Figure 8] These are a top view, a side view, and a rear view showing the second panel according to Embodiment 1. [Figure 9] These are a top view, a side view, and a rear view showing the third panel according to Embodiment 1. [Figure 10] These are a top view, a side view, and a rear view showing the fourth panel according to Embodiment 1. [Figure 11] This is a side view showing the joint between the panel and the mounting part according to Embodiment 1. [Figure 12] This is a perspective view of the work platform according to Embodiment 1, seen from the underside. [Figure 13] This is a schematic diagram showing an eyebolt according to Embodiment 1. [Figure 14] These are a top view and a side view showing the auxiliary plate according to Embodiment 1. [Figure 15] This figure shows an example of using a work platform made of temporary materials according to Embodiment 1. [Modes for carrying out the invention]

[0010] Embodiments of the present invention will be described below with reference to the drawings. However, the present invention is not limited to the embodiments described below. Each figure is schematic, and the relative size and thickness of each component are not limited to the dimensions shown. Furthermore, the size relationships of the components in the following drawings may differ from those of the actual components.

[0011] Embodiment 1. Figs. 1 and 2 are schematic views showing the temporary material 1 according to Embodiment 1. As shown in Figs. 1 and 2, the temporary material 1 functions as a work floor during the work on the bridge girder during bridge erection or repair work. In a trestle-type road structure such as a mountain road, the intervals between the girders often vary. The panel 2 constituting the temporary material 1 according to Embodiment 1 is installed on the upper surface 10 of the bridge girder, and can be assembled according to the interval between the girders even if the intervals between the girders are different. The temporary material 1 includes a panel 2, an eyebolt 6, and an L-shaped member 5. In Fig. 1, a plurality of stanchions 11 for supporting the main rope 12 are provided at the ends of the bridge girder. The main rope 12 is a rope for hanging a safety belt, and is supported by a plurality of stanchions 11 and stretched over the girder.

[0012] Fig. 3 is a top view showing the panel 2 according to Embodiment 1, and Fig. 4 is a bottom view showing the panel 2 according to Embodiment 1. Fig. 5 is a side view showing the panel 2 according to Embodiment 1, and Fig. 6 is a side view showing the panel 2 according to Embodiment 1 from the other side. As shown in Figs. 3 to 6, the panel 2 is a plate-shaped member having a plurality of joining holes 3c formed on its side surface. The panel 2 has a rectangular top plate 3 extending in one direction and four side plates 4 extending downward from the four sides of the top plate 3. That is, the panel 2 can be said to be a box-shaped member with an open bottom surface. Specifically, the side plate 4 is an L-shaped steel material, one flange of which is welded to the back surface of the top plate 3, and the other flange is used as the side plate 4 extending downward from the top plate 3. The side plates 4 made of L-shaped steel materials joined to the four sides of the top plate 3 are welded to each other.

[0013] Note that, although the case where the material of the panel 2 is made of steel is illustrated, it may be made of aluminum or other members. The weight of the panel 2 is such that it can be carried by hand. The top plate 3 is a corrugated steel plate, by which it is possible to suppress slipping when an operator works. On the back surface of the top plate 3, a reinforcing rib 3a having a height substantially equal to the height of the side plate 4 is provided, and the reinforcing rib 3a extends from one end portion in the width direction of the top plate 3 to the other end portion. The reinforcing rib 3a is, for example, a strip-shaped steel plate and is adhered, for example, by welding. The reinforcing rib 3a supplements the strength of the top plate 3. A plurality of eye bolt holes 3b for attaching eye bolts 6 are formed in the top plate 3. In the side plate 4, a plurality of joining holes 3c into which bolts for attaching the side plates 4 of adjacent panels 2 are inserted are formed. By screwing the bolts inserted into the joining holes 3c with nuts, the panels 2 are connected to each other. Thereby, the connection of the panels 2 can be adjusted at a fine pitch. The joining holes 3c are formed, for example, at a pitch of 100 mm. Also, the connection position of the panels 2 changes depending on the combination of the joining holes 3c. In the first embodiment, there are four types of panels 2.

[0014] FIG. 7 is a top view, a side view, and a bottom view showing the first panel 2a according to the first embodiment. The first panel 2a is the smallest in size among the four types of panels 2, and both the length in the width direction and the length in the longitudinal direction are short.

[0015] FIG. 8 is a top view, a side view, and a bottom view showing the second panel 2b according to the first embodiment. The second panel 2b is longer in the width direction than the first panel 2a and has the same length in the longitudinal direction.

[0016] FIG. 9 is a top view, a side view, and a bottom view showing the third panel 2c according to the first embodiment. The third panel 2c has the same length in the width direction as the first panel 2a and is longer in the longitudinal direction.

[0017] Figure 10 shows a top view, side view, and rear view of the fourth panel 2d according to Embodiment 1. The fourth panel 2d has the same width as the second panel 2b and the same length as the third panel 2c. In other words, the fourth panel 2d is the largest of the four types of panels 2.

[0018] Thus, this embodiment 1 allows for the formation of a customizable work platform by using panels 2 composed of multiple patterns. By combining these panels 2, a work platform can be realized that is tailored to girders with complex road structures (curves in the road alignment and changes in road width) and road gradients (longitudinal and transverse gradients).

[0019] Figure 11 is a side view showing the joint between the panel 2 and the mounting part according to Embodiment 1. The temporary material 1 is interposed between the mounting part to which the temporary material 1 is attached and the panel 2, and includes an L-shaped member 5 for attaching the panel 2 to the mounting part. Here, the mounting part refers to, for example, a beam to which the temporary material 1 is attached. As shown in Figure 11, the L-shaped member 5 has an elongated hole 5a, and is attached to the side plate 4 of the panel 2 by screwing it with a bolt and nut using the elongated hole 5a. When the L-shaped member 5 is attached to the side plate 4 internally, the mounting position of the panel 2 is raised by the thickness of the L-shaped member 5. As a result, when one side plate 4 of the panel 2 rests on a splice plate 13 of a high-strength bolted joint on the upper flange 10a of a beam, the panel 2 can be installed without interfering with the bolts, and a flat work floor can be obtained. Furthermore, because the L-shaped member 5 has an elongated hole 5a, the bolt tightening position can be appropriately adjusted to accommodate both internal and external mounting of the L-shaped member 5, allowing for the construction of a flat work platform even when the girder has a slope. By tightening the flange of the L-shaped member 5 (L-shaped metal fitting) fixed to the side plate 4 to the mounting part using a vise 14, the panel 2 can be firmly installed on the girder of a bridge or the like.

[0020] Figure 12 is a perspective view of the work platform according to Embodiment 1, seen from the underside. Figure 12(a) is a perspective view of the work platform seen from the underside, and Figure 12(b) is an enlarged view of the portion of Figure 12(a) where the eyebolt 6 is attached. As shown in Figure 12(a), multiple panels 2 of different shapes are arranged in the longitudinal and width directions of the panels 2 to form a planar shape that facilitates work, according to the changes in the spacing of the girders 15 on which the temporary material 1 is installed. By screwing them together with bolts and nuts using joining holes 3c formed in the side plates 4 of the panels 2, a safe and easy-to-work-on work platform can be formed even when the spacing of the girders 15 changes in a complex way, or when there are splice plates 13 or high-strength bolts at the girder joints 17. In addition, multiple eyebolt holes 3b are formed in the top plate 3, to which the eyebolt 6 is attached. One eyebolt hole 3b is formed at both ends in the longitudinal direction and at both ends in the width direction of the top plate 3. In other words, although there are four eyebolt holes 3b in the top plate 3, the number of eyebolt holes 3b is not limited. As shown in Figure 12(b), the eyebolt 6 is fixed to the top plate 3 by being inserted into the eyebolt hole 3b and screwed onto the nut 6a.

[0021] Figure 13 is a schematic diagram showing an eyebolt 6 according to Embodiment 1. The eyebolt 6 shown in Figure 13 is fixed to the top plate 3 by screwing it into a nut 6a provided in the eyebolt hole 3b. After joining the panels 2 in a safe place, the work platform can be safely installed at the mounting site by lifting it using the eyebolt 6. Note that a nut is welded to the back side of the eyebolt hole 3b on the top plate 3. This allows the eyebolt 6 to be easily fixed to the top plate 3 by inserting and screwing it in from the front side of the top plate 3. With the eyebolt 6 attached in this way, it becomes possible to lift loads even when the panels 2 are connected.

[0022] Figure 14 shows a top view and a side view of the auxiliary plate 7 according to Embodiment 1. As shown in Figure 14, the auxiliary plate 7 is used to secure space for workers to work when the work platform is formed by combining the panels 2. As shown in Figure 2, the auxiliary plate 7 is a work platform that is installed as an auxiliary when the panels 2 are far apart or in the gap between the panel 2 and the beam.

[0023] According to this embodiment 1, a work platform is formed by connecting panels 2 to each other using connecting holes 3c formed on the sides. Therefore, by connecting multiple panels 2 using the connecting holes 3c formed on the sides, an appropriate work platform can be installed even when the spacing between girders is not constant. This prevents falls from openings in the work area and allows for free movement between the main girders.

[0024] Conventionally, in the work of laying cover plates on girders for mounting heavy machinery such as cranes, stanchions 11 were used to install the plates on the girders, and a lifeline 12 for attaching a safety harness was provided to them, with the top surface 10 of the girder serving as the work platform for laying the plates. However, the top surface 10 of the girder is narrow, smooth, and slippery, making it highly dangerous for workers to lose their footing, and there is a risk of workers falling through openings in the work area. Furthermore, when a work platform is installed on a pier-type road structure such as a road in a mountainous area, the spacing between girders differs, making it difficult to construct a work platform that completely closes the openings when using standardized panels 2. In contrast, this embodiment 1 forms a work platform by combining multiple panels 2, so it is possible to construct a highly safe work platform that secures a wide work surface with openings as small as possible, even on bridges with complex shapes due to curves (road curves) and changes in road width. In this embodiment 1, the top surface of the top plate 3 is made of non-slip checkered steel plate, which prevents workers from slipping and falling. Furthermore, even when there are girder joints 17 that bolt together girders, a flat and safe work platform can be formed that does not interfere with them. In addition, conventionally, when moving to an opposing girder, it was necessary to travel a long distance by following the top surface of the girder. However, according to this embodiment 1, even if the distance between opposing girders is large, a work platform can be erected, making it easier for workers to move between girders perpendicular to the bridge axis, thereby improving work efficiency.

[0025] As described above, this embodiment 1 is a freely adjustable, simple work platform designed to improve safety and work efficiency during bridge construction work on girders, providing a construction environment where work on girders can be performed safely. Furthermore, even if the shape of the bridge girder is not constant, the shape of the work platform can be changed by changing the combination pattern of each panel 2 that constitutes the simple work platform. Therefore, the work platform can be used to suit various girder shapes. Since bolt holes are formed at fine pitches in the panels 2 that constitute the simple work platform, various patterns of work platforms can be formed without gaps by fine combinations.

[0026] Furthermore, by making the cross-sectional height of the L-shaped steel plate used for the side plate 4 of panel 2 65 mm, the crowd load (3.5 kN / m 2 This allows for the use of heavy machinery. Each panel is light enough to be carried by hand, and the simple work platform formed by connecting two panels can also be lifted by heavy machinery using eye bolts six. Furthermore, it becomes easier to move between girders perpendicular to the bridge axis, improving work efficiency.

[0027] Figure 15 shows an example of using a work platform with temporary materials 1 according to Embodiment 1. As shown in Figure 15, a work platform using temporary materials 1 of Embodiment 1 is installed on top of girders 15 installed on top of piles 16, and workers stand on this work platform to construct a temporary platform made of H-shaped steel and covering plates for mounting pile drivers and cranes. The work platform is constructed by combining the first panel 2a to the fourth panel 2d shown in Figures 7 to 10. By selecting the first panel 2a to the fourth panel 2d for each range with different spacing between girders 15, the length, width, and planar shape of the work platform suitable for the work can be configured.

[0028] When the spacing between girders 15 is wide, the short sides of two panels 2 are joined together, and both ends of the joined panels 2 are mounted on the girders 15. In addition, near piles 16 and girder joints 17, the long sides of the panels 2 are joined together to create a wide working platform in a planar manner, allowing for movement in a planar direction. The joints between panels 2 are joined in a staggered pattern, rather than being in the same position as adjacent panels 2, to enhance the safety of the joints. Since the panels 2 are bolted together on the sides, there are no gaps or steps. This improves safety by preventing missteps and tripping. Furthermore, by tightening the L-shaped members 5 attached to the ends of the panels 2 to the upper flange 10a of the girder 15 using a vise 14 and fixing them firmly, the working platform is prevented from shifting or detaching from the girder 15, thereby enhancing safety.

[0029] Thus, when the spacing between the girders 15 changes, the temporary material 1 of this embodiment 1 can be used to construct a safe work platform with a shape suitable for the arrangement of the girders 15 and the work content. In advance, multiple panels 2 are joined together in the construction yard to complete the work platform, and then the panels 2 are lifted by a crane using eye bolts 6 provided on them and installed on the girders 15, and fixed to the girders 15 using L-shaped members 5. This eliminates the need for assembly work on the girders 15, resulting in a safe and efficient work platform assembly process.

[0030] The temporary materials described above may also include combinations of the following characteristics. These combinations are shown below. [Note 1] It is equipped with multiple panels with multiple joining holes formed on the sides, The panels are connected to each other using the aforementioned joining holes, thereby functioning as a work platform. Temporary materials. [Note 2] The connection position between the panels changes depending on the combination of the aforementioned joining holes. Temporary materials as described in Appendix 1. [Note 3] The panels are connected when the bolts inserted into the connecting holes are screwed into the nuts. Temporary materials as described in Appendix 1 or 2. [Note 4] The panel further comprises an eyebolt provided on the panel and used when lifting the panel. Temporary materials as described in any one of the following appendices 1 to 3. [Note 5] The system further includes an L-shaped member interposed between the mounting portion and the panel, which attaches the panel to the mounting portion. Temporary materials as described in any one of the appendices 1 to 4. [Explanation of Symbols]

[0031] 1 Temporary material, 2 Panel, 2a First panel, 2b Second panel, 2c Third panel, 2d Fourth panel, 3 Top plate, 3a Reinforcement rib, 3b Eyebolt hole, 3c Joint hole, 4 Side plate, 5 L-shaped member, 5a Slotted hole, 6 Eyebolt, 6a Nut, 7 Auxiliary plate, 10 Top surface, 10a Upper flange, 11 Stanchion, 12 Lifeline, 13 Splice plate, 14 Vise, 15 Beam, 16 Pile, 17 Beam joint.

Claims

1. It is equipped with multiple panels with multiple joining holes formed on the sides, The panels are connected to each other using the aforementioned joining holes, thereby functioning as a work platform. Temporary materials.

2. The connection position between the panels changes depending on the combination of the aforementioned joining holes. The temporary material according to claim 1.

3. The panels are connected when the bolts inserted into the connecting holes are screwed into the nuts. Temporary material according to claim 1 or 2.

4. The panel further comprises an eyebolt provided on the panel and used when lifting the panel. Temporary material according to claim 1 or 2.

5. The system further includes an L-shaped member interposed between the mounting portion and the panel, which attaches the panel to the mounting portion. Temporary material according to claim 1 or 2.

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