JP2015081456A - Panel for hanging scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a panel for a hanging scaffold, which can be safely and easily connected and removed.SOLUTION: A panel for a hanging scaffold is horizontally constructed by being longitudinally and laterally connected. An end gap closing material 23 capable of being turned via a hinge is provided in such a manner as to be flush with a panel floor surface, at an end of at least one short-side part of the rectangular panel.

Description

  The present invention relates to a suspension scaffold panel temporarily provided for repairing or inspecting a bridge girder such as a road.

  Generally, in repairing and inspecting bridge girders such as bridges and highways, there are many rivers and roadways underneath them, so it is impossible to assemble a temporary scaffold from the ground. For this reason, there are many temporary installations of suspension scaffolds suspended from bridge girders.

  Conventionally, a “single tube scaffolding method” is known as this type of suspended scaffolding. This is because the suspension chain is suspended from the bridge girder in the axial direction of the bridge girder (the direction of travel of the car) at a predetermined interval, the parent pipe is bridged between the suspension chains in the axial direction of the bridge girder, and between the parallel parent pipes. Rolling pipes in a direction perpendicular to the bridge girder's axis, spanning multiple pipes at a predetermined interval, and then placing a plurality of scaffolding plates on these rolling pipes in parallel with the axial direction of the bridge girder, and the lower and both sides of the scaffolding board Constructed by placing a safety net on the surface.

  However, suspension scaffolds using a single-tube scaffolding system must be installed while connecting individual parts such as single pipes, scaffolding plates, chains, etc., with connecting fittings such as clamps. Not only was it bothersome and cumbersome, it was dangerous.

  For this reason, a panel formed by fixing and integrating the flooring material above the framework formed in a roughly rectangular shape is connected vertically and horizontally while hanging with a chain suspended from the bridge part of the bridge girder to expand the scaffolding area in the horizontal direction. A “panel method” has been proposed and put into practical use.

  FIG. 1 is a schematic view of a suspension scaffold by a panel method. (a) is a cross-sectional view of the bridge girder in the direction perpendicular to the axis, and (b) is a plan view taken along the line AA.

  The suspension scaffold 1 suspends a chain 5 by a chain clamp 4 from a flange 3a of a bridge portion 3 made of I-shaped steel provided at an appropriate interval below a floor slab portion 2 of a bridge girder. A plurality of suspension chains 5 are installed in the axial direction of the bridge girder, or both in the axial direction of the bridge girder and in the direction perpendicular to the axis of the bridge girder. At the same time, the rectangular panel 6 is suspended by the chain 5 at the chain position 7. The long side members 6a and the short side members 6b are connected to each other by a connecting tool.

  In Patent Document 1, in order to connect the long sides of the panels, a connector that protrudes from the long side of the panel is provided on one side of the long side of the panel, and on the other side of the long side of the panel There has been proposed a panel provided with a connection receiving portion having a hole into which the tip of the protruding connection tool can be inserted.

  FIG. 2 is an example (conventional example) of a panel that is put into practical use based on Patent Document 1. (a) is a plan view, (b) is a front view, (c) is a left side view, (d) is a short side member of the panel, and (e) is a detailed view of part A.

  This panel 6 has a floor frame 8 stretched on a rectangular frame. A flooring 8 is stretched on the panel 6 so that an operator can work on it. And in this panel 6, in order to provide the clearance gap 9 for letting the chain suspended from the bridge part pass, the clearance gap 9 was opened in each of the both ends of the panel 6, and the short side member 6b which consists of a round pipe Is attached. In addition, since the suspended chain may pass through the suspension ring 10 provided on the floor surface, both the gap 9 and the suspension ring 10 are used here so that the chain can be passed through either one. Is provided.

  The rectangular panels are connected by first connecting the long side members to each other.

  FIG. 3 is a diagram showing a state in which two of the panels shown in FIG. 2 are connected by their long side members. (a) is a plan view, and (b) is a right side view taken along the line BB.

  The long-side members of the panels are connected to the connector 11 protruding from the long-side panel portion 6a of the installed panel (shown on the upper side in FIG. 3 (a) and on the right side in FIG. 3 (b)). , Extrapolate a hole in the connection receiving portion 12 of the panel long side portion 6a of the panel to be connected (shown on the lower side in FIG. 3 (a) and on the left side in FIG. 3 (b)) and tighten the bolt. Made by. The chain hanging position 18 at this time is as shown in the figure, and the chain 5 holds the short side member 6b of the panel by passing through the gap 9.

  FIG. 4 shows an operation of connecting two long-side members of the panel shown in FIG. (a) is before connection, and (b) is after connection.

  Here, a worker (not shown) has a knee on an installed panel (shown on the left side of FIG. 4 (a)) and protrudes from the side of the long side member 6a of the panel. 11, a hole of the connection receiving portion 12 provided on the side surface of the long side member 6a of the panel to be connected (shown on the right side of FIG. 4) is extrapolated and then drilled in the connection receiving portion 12. After positioning the through hole 13 and the locking hole 14 formed in the connector 11, the insertion pin 15 is inserted into both holes, and then the adjustment bolt 16 is tightened, so that the long side members of the panel Consolidation is complete.

  Next, the panels are connected at the short sides of the rectangular panels.

  FIG. 5 is a diagram showing a state in which two of the panels shown in FIG. 2 are connected by their short side members. (a) is a plan view, and (b) is a detailed view of part C.

  The short side of the panel is connected to the panel short side member 6b at the right end of the installed panel (shown on the left side of FIG. 5A) and the panel to be connected (on the right side of FIG. 5A). It is made by fastening between the panel short side member 6b of the left end of the left side of the board with the clamp 19 which can fasten two pipes.

  FIG. 6 is a diagram showing an operation of connecting two panels with their short side members by clamping. Both are cross-sectional views taken along the line DD in FIG. 5, wherein (a) is before clamping and (b) is after clamping.

  Here, an operator (not shown) knees on the right end of the floor material 8 of the installed panel (shown on the left side of FIG. 6A), and the floor material 8 of the panel to be connected. The panel short side member 6b at the left end (shown on the right side of FIG. 6A) is pulled in the left direction. At this time, one (left side) of the clamp 19 is attached in advance to the panel short side member 6b (left side) at the right end of the installed panel, and the other side (right side) of the clamp 19 is left open. Leave it in a state. Then, after pulling the panel to be connected (right side) in the left direction, the panel short side member 6b at the left end is attached to the other side (right side) of the clamp 19 and fastened with the screw portion 19a. The short side member 6b is connected.

  In this case, since the clamp 19 is used to manually connect the two panel short-side members, the gap is 8 cm or more so that the operator's wrist can enter the gap provided in the panel short-side portion. Necessary.

Japanese Examined Patent Publication No. 7-103679

  However, when a panel having a gap of 8 cm or more in the vicinity of such a short side portion is used to connect and disassemble the short side members of the panel, the following (i) to (iii) are shown. Problems arise.

  (i) Usually, the reference of the opening of the passage (the cloth frame with a floor) in the temporary scaffold is set to 3 cm or less in the width in the short side direction. This is because the objects that can fall from the 3cm gap used on the scaffold are mostly light objects such as bolts and nuts, and even if they fall from the 3cm gap, it is safe It is a numerical value determined from the idea that if you wear clothes (such as a helmet), it will not cause a major accident.

  However, as described above, there is a gap of 8 cm or more at both ends of the short side portion of the panel, and there is a risk that a heavy object such as a single tube or an angle may fall from the gap. Moreover, depending on the case, there is a risk that the legs of the worker will fall into the gap and fall out of the scaffolding by breaking the balance.

  (ii) It has been described that the rectangular panel connecting operation is performed by first connecting the panels with the long side members and then connecting the short side portions. However, for example, when three panels are connected in a horizontal L shape and then another panel is connected horizontally to form a rectangular four-panel connection panel, the long side members are connected as follows. It is also possible to connect the short side members at a time.

  FIG. 7 shows that after the three panels shown in FIG. 2 are connected in a horizontal L shape, another panel (D) is placed on the upper right of the three panels (A), (B), and (C). The situation when linking is shown.

  Here, two workers are required, and the work position 21b is two places of the installed panel (A) and panel (C) as shown in the figure. The workers cooperate to move the panel (D) to be connected from the upper right direction to the lower left direction. That is, the panel (A) worker draws the panel (D) and connects the panel short side members to the panel (A), and the panel (C) worker panel (D) The panel short side members are connected to each other with the panel (C).

  FIG. 8 shows the connection work of the workers on the panel (A).

  The worker 21 puts a knee on the right end of the floor material 8 of the installed panel (A) (shown on the left side of FIG. 8), and connects the floor material 8 (FIG. 8) of the panel (D) to be connected. The panel short side member 6b at the left end of FIG. At this time, one side (left side) of the clamp 19 is attached in advance to the panel short side member 6b (left side) at the right end of the installed panel (A), and the other side (right side) of the clamp 19 is opened. Leave it as it is. After that, the panel to be connected (right side) is pulled in the left direction, and then the panel short side member 6b at the left end is attached to the other side (right side) of the clamp 19 and fastened. 6b are connected. This operation is the same as the operation in FIG.

  However, since a gap 9 as long as 8 cm or more is formed at the right end of the installed panel (A) in order to perform manual work for fastening the two panel short-side members with clamps, the worker 21 Knees a place far from that end, and works to pull the panel (D) to be connected in an unstable posture with the hand extended. Therefore, the worker 21 has a risk of losing balance during the connecting operation.

  (iii) The gap can be closed by placing an end gap closing material between the panels after the panels are connected in the horizontal direction and the suspension scaffold is assembled.

  FIG. 9 shows an example of placing the end gap closing material. (a) is a plan view, (b) is a detailed view of an E portion, and (c) is a cross-sectional view taken along the line FF.

  After the two panels 6 are connected to each other by the short side members 6 b, the end gap closing material 23 is placed between the two panels 6. However, since the clamp 19 is attached to the short side member 6b of the panel, the height of the floor surface of the end gap closing material is higher than the floor surface of the panel. A step 23a is formed. Therefore, there is a risk that the worker may fall over the step 23a while moving on the suspension scaffold, which is dangerous. Further, the end gap closing material 23 is merely placed between the end portions of the panel 8, and is not connected to the panel 8. Therefore, when the end gap closing material 23 is placed on the gap, the hand may slip and the end gap closing material may fall from the gap.

  The present invention was made to solve the above problems all at once, and not only can the suspension scaffold panel be connected and disassembled safely and easily, but also safely and easily on the scaffold after the suspension scaffold is installed. An object of the present invention is to provide a suspension scaffold panel that can be operated and moved.

  The inventors of the present invention have made extensive studies in order to make it safe and easy to connect and disassemble the suspension scaffold panel and to perform work and movement on the scaffold after the suspension scaffold is installed. As a result, the following findings (a) to (e) were obtained.

  (a) In order to connect the short-side members of the panel with a clamp in a state where the panel is suspended by a chain, a gap for connecting work must be provided in the vicinity of the panel short-side member.

  (b) When a gap for connecting work is provided near the panel short side member, the worker kneeled on the floor near the short side of the panel in front and the hand was extended The work which draws the panel which should be connected by the posture is done. Therefore, in order to avoid an unstable posture, the gap should be as narrow as possible.

  (c) The gap formed between the panels is necessary for the work of clamping the short side members at the end of the panel with a clamp, but a chain suspended from the bridge is provided on the floor. In the case of passing through the suspended ring, there is no need to provide a gap after the panel connection work is completed. However, when passing the chain suspended from the bridge part through the short side member at the end of the panel, it is necessary to provide a gap after the panel connection work is completed. It is enough to leave a gap of 3cm or less.

  As described above, after the panel connecting operation is completed, the end gap closing material can be placed on the gap. When it is desired to secure a clearance only for the chain hanging position, it is sufficient to leave that clearance. Instead of leaving a gap, an opening may be provided at a location corresponding to the chain suspension position of the end gap closing material.

  (d) In order to prevent the end gap closing material from falling from the gap, the end gap closing material may be prevented from leaving the panel. For example, an end gap closing material may be installed at the end of the short side of the panel via a hinge, and the end gap closing material may be folded so as to be rotatable upward or downward. Alternatively, an end gap closing material may be installed at the end of the short side of the panel so that it can be pulled out in the horizontal direction so that the end gap closing material can be moved in the horizontal direction.

  When the end gap closing material is installed at the end of the short side portion of the panel, the worker can kneel on the end gap closing material and pull the panels to be connected together to perform the connection work. That is, since the worker does not have to bend forward by an amount corresponding to the end gap closing material, the worker can work safely. In this case, it is preferable that the end gap closing material has a strong shape or material so that the worker can hold it even when working on the end gap closing material. For example, various things can be considered, such as increasing the thickness of the end gap closing material, bending the end of the floor material, or providing a receiving material for the end gap closing material from the panel body. As long as it can be used.

  FIG. 10 is a diagram illustrating a work position of the worker when the worker performs the connecting work. (a) is the case where there is no end gap closing material, and (b) is the case where there is an end gap closing material.

  In either case, the worker 21 kneels, pulls the short side member 6b of the panel to be connected, and works to fasten the short side member 6b to the clamp 19. At this time, in the case where there is no end gap closing material of (a), the worker 21 kneels the end of the panel flooring 8 and pulls the short side member 6b of the panel to be connected, so it is impossible to bend forward. Will take a strong posture. On the other hand, when there is an end gap closing material of (b), the worker 21 pulls the short side member 6b of the panel to be connected by kneeling the end of the end gap closing material 23. You won't be forced to lean forward and you can work safely.

  (e) When installing the end gap closing material, by eliminating the step 23a between the end gap closing material and the panel, an operator will not trip on the suspended scaffold. I want to That is, it is preferable that the height of the end gap plugging material is substantially the same as the height of the floor surface of the panel. Here, even if the end gap closing material and the panel floor are flush with each other, there is no influence on the connecting work.

  FIG. 11 is an enlarged view of the clamp portion of FIG.

  An operator (not shown) kneels on the end of the gap closing material provided on the installed panel, and fastens the short side member (not shown) 6b of the panel to be connected to the clamp 19. Will work. At this time, the short side member 6a of the installed panel is already fastened to the clamp 19, and the screw portion 19a (shown on the left side) of the clamp is tilted sideways. It does not get in the way. A screw portion 19a (shown on the right side) for fastening a short side member (not shown) of the panel to be connected stands, but there is no end gap closing material (exactly) The panel to be connected is provided with an end gap closing material, but does not exist at the position of the screw part 19a (shown on the right side).

  The present invention has been made based on the above findings, and the gist thereof lies in the following suspension scaffold panels (1) to (5). Hereinafter, the present invention is collectively referred to as the present invention.

  (1) A suspension scaffold panel that is connected vertically and horizontally and constructed in the horizontal direction, and is an end gap closing material that can be rotated via a hinge at the end of at least one short side of a rectangular panel. Suspended scaffolding panel characterized in that is provided flush with the panel floor.

  (2) A suspension scaffold panel that is connected vertically and horizontally and constructed in the horizontal direction. At the end of at least one short side of the rectangular panel, an end gap closing material that can be pulled out in the horizontal direction is provided. Suspended scaffolding panel characterized by being provided flush with the floor.

  (3) The suspension scaffold panel according to (1) or (2) above, wherein the short side member is a pipe.

  (4) The suspension scaffold panel according to any one of (1) to (3) above, wherein the end gap closing material has an opening.

  (5) With the end gap closing material provided flush with the suspension scaffold panel, the clamp connecting the short side members has a space that can be accommodated below the end gap closing material. The suspension scaffold panel according to any one of (1) to (4) above.

  The suspended scaffold panel according to the present invention can be connected and disassembled safely and easily, and can be safely and easily operated and moved on the scaffold after installation.

It is a schematic diagram of the suspension scaffold by a panel system. (a) is a cross-sectional view of the bridge girder in the direction perpendicular to the axis, and (b) is a plan view taken along the line AA. It is an example (conventional example) of the panel put into practical use based on Patent Document 1. (a) is a plan view, (b) is a front view, (c) is a left side view, (d) is a short side member of the panel, and (e) is a detailed view of part A. It is a figure which shows the state which connected two sheets of the panel shown by FIG. 2 with the long side members. (a) is a plan view, and (b) is a right side view taken along the line BB. It is a figure which shows the operation | work which connects two sheets of the panel shown by FIG. 2 by the long side members. (a) is before connection, and (b) is after connection. It is a figure which shows the state which connected two sheets of the panel shown by FIG. 2 with the short side members. (a) is a plan view, and (b) is a detailed view of part C. It is a figure which shows the operation | work which connects two panels by the clamp by the short side members. Both are cross-sectional views taken along the line DD in FIG. 5, wherein (a) is before clamping and (b) is after clamping. When connecting another panel (D) horizontally on the upper right of the three panels (A), (B), and (C) after connecting the three panels shown in Fig. 2 in a horizontal L shape. Shows the situation. Panel (A) shows the work of connecting workers. An example of placing the end gap closing material is shown. (a) is a plan view, (b) is a detailed view of an E portion, and (c) is a cross-sectional view taken along the line FF. End gap plugging material It is a figure which shows the working position of the worker when a worker performs a connection work. (a) is the case where there is no end gap closing material, and (b) is the case where there is an end gap closing material. It is an enlarged view of the clamp part of FIG.10 (b). It is an example (plan view) of an end gap closing material used for the suspension scaffold panel according to the present invention. It is the other example (plan view) of the edge part gap closing material used for the panel for suspension scaffolds which concerns on this invention.

  Hereinafter, a suspended scaffold panel according to the present invention will be described with reference to the drawings.

  FIG. 12 is an example (plan view) of an end gap closing material used for the suspension scaffold panel according to the present invention.

  In this panel, a floor material 8 is stretched on a rectangular frame composed of a long side member 6a and a short side member made of a round pipe. On this panel, a floor material 8 is stretched leaving a gap in the vicinity of the short side member, and an operator can work on it. This gap is provided for performing an operation of fastening the short side members at the end portions of the panels with clamps when the panels are connected. It is also a clearance necessary when the chain is passed through the short side member at the end of the panel in order to suspend the panel from the bridge portion.

  An end gap closing material 23 covering the entire gap is provided flush with the panel floor. Further, the end gap closing material 23 is provided so as to be rotatable upward through a hinge 23b at the end of the panel flooring 8. For this reason, when connecting the panels, the operator can pull the short side member of the panel to be connected by kneeling to the end of the end gap closing material 23, so take an unreasonable posture of bending forward The connection work can be done safely. The same applies when dismantling the panel. In addition, since the clamp for fastening the short side member of the panel is also stored below the end gap closing material, there is no level difference between the panel after connecting the panel and the end gap closing material, and the end gap closing material There is no difference in level. Therefore, the worker can work and move safely and easily on the scaffold after installation.

  FIG. 13 is another example (plan view) of an end gap plugging material used for the suspension scaffold panel according to the present invention.

  In this panel, a floor material 8 is stretched on a rectangular frame composed of a long side member 6a and a short side member made of a round pipe. On this panel, a floor material 8 is stretched leaving a gap in the vicinity of the short side member, and an operator can work on it. This gap is provided for performing an operation of fastening the short side members at the end portions of the panels with clamps when the panels are connected. It is also a clearance necessary when the chain is passed through the short side member at the end of the panel in order to suspend the panel from the bridge portion.

  An end gap closing material 23 covering the entire gap is provided flush with the panel floor. Further, the end gap closing material 23 is provided so as to be rotatable upward through a hinge 23b at the end of the panel flooring 8. For this reason, when connecting the panels, the operator can pull the short side member of the panel to be connected by kneeling to the end of the end gap closing material 23, so take an unreasonable posture of bending forward The connection work can be done safely. The same applies when dismantling the panel. In addition, since the clamp for fastening the short side member of the panel is also stored below the end gap closing material, there is no level difference between the panel after connecting the panel and the end gap closing material, and the end gap closing material There is no difference in level. Therefore, the worker can work and move safely and easily on the scaffold after installation.

  Further, the end gap closing material 23 is provided with three openings 23c. These are used when the chain suspended from the bridge portion is passed through the short side member at the end of the panel, and is provided at a location corresponding to the chain suspension position of the end gap closing material. Since there is this opening, the panel can be hung with a chain suspended from the bridge after the panels are connected.

  The suspended scaffold panel according to the present invention can be connected and disassembled safely and easily, and can be safely and easily operated and moved on the scaffold after installation.

DESCRIPTION OF SYMBOLS 1 Suspended scaffold 2 Floor part 3 Bridge part 3a Bridge flange 4 Chain clamp 5 Chain 6 Panel 6a Panel long side member 6b Panel short side member 7 Chain position 8 Floor material 9 Clearance 10 Suspension ring 11 Connecting tool 12 Connection receiving part 13 Through-hole 14 Locking hole 15 Through-pin 16 Adjustment bolt 18 Chain hanging position 19 Clamp 19a Clamp screw part 21 Worker 21a Worker's knee 21b Worker's work position 23 End gap closing material 23a End gap closing material Step 23b End gap closing material hinge 23c End gap closing material opening

Claims (5)

  Panels for suspension scaffolds that are connected vertically and horizontally and are constructed in the horizontal direction. At the end of at least one short side of a rectangular panel, an end gap closing material that can be rotated via a hinge is applied to the panel floor. Suspended scaffolding panel characterized by being provided flush with the surface.   Panels for suspension scaffolds that are connected vertically and horizontally and constructed in the horizontal direction, and at the end of at least one short side of the rectangular panel, an end gap closing material that can be pulled out in the horizontal direction is connected to the panel floor surface. Suspended scaffolding panel characterized by being provided flush.   The suspension scaffold panel according to claim 1 or 2, wherein the short side member is made of a pipe.   The suspended scaffolding panel according to any one of claims 1 to 3, wherein the end gap closing material has an opening.   With the end gap closing material provided flush with the suspension scaffold panel, the clamp connecting the short side members has a space that can be accommodated below the end gap closing material, The suspended scaffolding panel according to any one of claims 1 to 4.

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