JP2018155060A - Mobile scaffold device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile scaffold device with simple constitution and high work efficiency, and applicable to a bridge which is difficult for an automobile to cross.SOLUTION: The mobile scaffold device is configured to move a scaffold below a bridge girder in a direction in which the bridge girder extends. The mobile scaffold device comprises: a traveling body which travels on a top surface of the bridge girder; a pair of support members which are supported by the traveling body and extend to positions lower than the bridge girder at both width direction-outsides of the bridge girder; and a scaffold part which is supported between lower ends of the pair of support members and moved by traveling of the traveling body. The scaffold part is configured in such a manner that the support by one of the paired support members is releasable and the scaffold part is movable to the other of the paired support members.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mobile scaffold device. In particular, the present invention relates to a scaffold on which an operator gets on when inspecting or repairing a bridge.

  Conventionally, for example, a work platform disclosed in Patent Document 1 and a scaffold disclosed in Patent Document 2 are known as scaffolds on which an operator boardes when inspecting and repairing a bridge.

Japanese Patent Laid-Open No. 2006-11211 JP-A-9-41323

  However, since the worktable disclosed in Patent Document 1 is a worktable provided in a bridge inspection vehicle, it is difficult to apply to a bridge that has a large and complicated configuration and is difficult to pass through an automobile.

  In addition, the scaffold disclosed in Patent Document 2 requires a plurality of scaffolds to be installed over the entire bridge girder in order to inspect the entire bridge girder of the bridge, and there is room for improvement in terms of workability.

  This invention is made | formed in view of the above-mentioned situation, and makes it an example of a subject to solve the above problems. That is, an example of an object of the present invention is to provide a mobile scaffold that can be applied to a bridge where it is difficult for a vehicle to pass and has high workability with a simple configuration.

  A moving scaffold device according to one aspect of the present invention is a moving scaffold device that moves a scaffold in a direction in which the bridge girder extends below a bridge girder, and travels on the upper surface of the bridge girder, and is supported by the traveling body. A pair of support members extending below the bridge girder on both outer sides in the width direction of the bridge girder, supported between the lower ends of the pair of support members, and a scaffold part that moves by running of the traveling body, The scaffold part can be released from the support of one of the pair of support members and can be moved to the other side of the pair of support members.

  Preferably, in the mobile scaffold device, the scaffold part includes a pair of rod-like members that are spanned between the pair of support members at intervals in the horizontal direction, and each of the pair of support members includes: Supported by the traveling body and supported by a pillar portion extending in the vertical direction of the bridge girder and the pillar portion below the bridge girder, so that each of the pair of rod-shaped members is movable in the width direction of the bridge girder. Holding portions for holding both end portions of the pair of rod-shaped members, and the scaffold portion is configured such that when one end portion of each of the pair of rod-shaped members is detached from the holding portions, When the support with one of the support members is released and each of the pair of rod-like members separated from the holding portion moves, it moves to the other side of the pair of support members.

  Preferably, in the mobile scaffold device, the scaffold portion is loosened so that a central portion is positioned below the pair of rod-shaped members between the pair of rod-shaped members, and both ends are the pair of rod-shaped members. A sheet-like member supported by each of the members, and a plate-like member disposed at the central portion of the sheet-like member supported by the pair of rod-like members, wherein the plate-like member is the sheet-like member It arrange | positions so that attachment or detachment is possible with respect to a member, and the said sheet-like member is supported so that folding and expansion | deployment are possible along the axial direction of a pair of said rod-shaped member.

  Preferably, in the mobile scaffold device, the traveling body includes beams that extend toward both outer sides in the width direction of the bridge girder and support the pair of support members, and the pair of support members are connected via a coupling mechanism. Are coupled to both ends of the beam, and the coupling mechanism can adjust the positions of the pair of support members in the vertical direction of the bridge beam.

  The mobile scaffold device according to one aspect of the present invention can be applied to a bridge where it is difficult for an automobile to pass and can provide a mobile scaffold having high workability with a simple configuration.

Several embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.
It is a figure which shows the whole structure of the mobile scaffold apparatus which concerns on embodiment of this invention. It is the figure which abbreviate | omitted illustration of the bridge containing a bridge girder and looked at the moving scaffold apparatus from the direction different from FIG. It is a figure for demonstrating the structure of a portal frame. It is a figure for demonstrating the structure of a driving part. It is a figure for demonstrating the structure of a pillar part. It is a figure for demonstrating the structure of a connection mechanism. It is a figure for demonstrating the structure of a locking mechanism. It is a figure for demonstrating the structure of a holding | maintenance part. It is a figure for demonstrating the structure of a scaffold part. It is a figure for demonstrating the operation | movement aspect of a scaffold part at the time of moving a scaffold part by driving | running | working of a traveling body, Comprising: It is a figure which shows the mode before operation | movement. It is a figure for demonstrating the operation | movement aspect of a scaffold part at the time of moving a scaffold part by driving | running | working of a traveling body, Comprising: It is a figure which shows a mode that a pair of rod-shaped member is moving. It is a figure for demonstrating the operation | movement aspect of a scaffold part at the time of moving a scaffold part by driving | running | working of a traveling body, Comprising: It is a figure which shows a mode that each one edge part of a pair of rod-shaped member removed from the holding | maintenance part. . It is a figure for demonstrating the operation | movement aspect of a scaffold part at the time of moving a scaffold part by driving | running | working of a traveling body, Comprising: It is a figure which shows a mode that each one edge part of a pair of rod-shaped member moved beyond a bridge pier. is there.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Embodiment described below shows some examples of the present invention, and does not limit the contents of the present invention. In addition, all the configurations and operations described in the embodiments are not necessarily essential as the configurations and operations of the present invention. In addition, the same referential mark is attached | subjected to the same component and the overlapping description is abbreviate | omitted.

[1. Configuration of mobile scaffold device]

  FIG. 1 is a diagram showing an overall configuration of a mobile scaffold device 1 according to an embodiment of the present invention. FIG. 2 is a view of the mobile scaffold device 1 viewed from a direction different from that in FIG.

  In the present embodiment, as shown in FIG. 1, a direction substantially perpendicular to the upper surface B of the bridge girder A that is a road surface on which a person passes is simply referred to as “up and down direction”. Further, in the present embodiment, the width direction of the bridge beam A, which is a direction substantially perpendicular to the extending direction and the vertical direction of the bridge beam A, is simply referred to as “width direction”. In the present embodiment, the forward direction of the traveling body 10 included in the mobile scaffold device 1 is simply referred to as “front”, and the direction opposite to the front is simply referred to as “rear”. In the present embodiment, when the mobile scaffold device 1 is viewed from the rear to the front, the right side of the mobile scaffold device 1 is simply referred to as “right”, and the left side of the mobile scaffold device 1 is simply referred to as “left”. Referred to as “way”.

  The mobile scaffold device 1 is a mobile scaffold that is temporarily installed on a bridge when the bridge is inspected and repaired. Preferably, the mobile scaffold device 1 is used to inspect a portion below the upper surface B of the bridge girder A in a bridge girder A of a bridge such as an overpass bridge built over the highway where it is difficult for a car to pass. It is a mobile scaffold that is temporarily installed on the bridge girder A when it is performed.

  As shown in FIGS. 1 and 2, the mobile scaffold device 1 includes a traveling body 10 that travels on the upper surface B of the bridge girder A and a lower side of the bridge girder A that is supported by the traveling body 10 on both outer sides in the width direction of the bridge girder A. And a pair of support members 30 that extend to each other. Furthermore, the mobile scaffold device 1 includes a scaffold part 60 that is supported between the lower ends of the pair of support members 30 and moves as the traveling body 10 travels.

  As shown in FIGS. 1 and 2, the traveling body 10 includes a portal frame 11 that forms a skeleton of the traveling body 10, and a traveling drive unit 16 that causes the traveling body 10 to travel.

  FIG. 3 is a diagram for explaining the configuration of the portal frame 11.

  As shown in FIG. 3, each of the portal frames 11 has a truss structure, and a pair of truss frames 12 provided to be opposed to each other in the width direction of the bridge beam A and a pair of trusses. The caster 13 provided on each lower surface of the frame 12 is provided. Further, the portal frame 11 includes a pair of booms 14 provided so as to extend upward from the lower frames 12a of the pair of truss frames 12, and each of the pair of booms 14 so as to extend in the width direction of the bridge beam A. And a beam 15 that is installed between the upper end portions and supports the pair of support members 30.

  Each of the pair of booms 14 is configured to have a telescopic structure by a rectangular tubular upper frame 14a and a lower frame 14b. Each of the pair of booms 14 is provided such that the upper frame 14a can extend and contract in the vertical direction with respect to the lower frame 14b. Thereby, each of the pair of booms 14 can adjust the position of the beam 15 in the vertical direction of the bridge beam A so that the height of the beam 15 from the upper surface B exceeds the fence D provided on the upper surface B of the bridge beam A. Configured. Each of the pair of booms 14 is configured such that the upper frame 14a is detachably connected to the lower frame 14b and can be disassembled and transported. Each of the pair of booms 14 includes a support pipe 14 c that is provided to extend in the width direction of the bridge beam A at the upper end portion of the upper frame 14 a and supports the beam 15.

  The beam 15 is formed so that both end portions 15a of the beam 15 extend beyond the pair of booms 14 and the fence D to both outer sides in the width direction of the bridge beam A. The beam 15 is formed in a circular tube shape that can be inserted into the support pipes 14 c of the pair of booms 14, and is installed between the pair of booms 14 by being inserted into the support pipes 14 c. The beam 15 is connected to the support pipe 14 c so that each of the pair of booms 14 can move along the axial direction of the beam 15. Thereby, the pair of booms 14 and the pair of truss frames 12 are configured such that the distance between the pair of booms 14 and the distance between the pair of truss frames 12 can be adjusted in the width direction of the bridge beam A. The beam 15 is detachably connected to the support pipes 14c of the pair of booms 14, and is configured to be disassembled and transported.

  FIG. 4 is a diagram for explaining the configuration of the traveling drive unit 16.

  As shown in FIG. 4, the travel drive unit 16 includes tires and wheels and is supported by one of a pair of truss frames 12, a steering handle 18 that changes the direction of the wheels 17, and the wheels 17. And a traveling motor 19 to be operated. Furthermore, the traveling drive unit 16 includes a generator 20 that supplies electric power to the traveling motor 19 and a carriage 21 that is fixed to one of the pair of truss frames 12 and on which the generator 20 is mounted.

  Only one wheel 17 may be provided. The wheel 17, the steering handle 18, and the traveling motor 19 are unitized, and the weight is reduced to such an extent that an operator can lift the wheel 17 upward so that the wheel 17 is separated from the upper surface B by grasping the steering handle 18. The generator 20 is a general-purpose small generator driven by an engine. The generator 20 may be a device having a power generation function and used at a construction work site, such as an engine welder. The generator 20 is not unitized with the wheel 17, the steering handle 18, and the traveling motor 19, and may be mounted on the carriage 21.

  The traveling drive unit 16 can transmit the driving force that the traveling body 10 can travel to the upper surface B by the operator grasping the steering handle 18 and pressing the wheel 17 rotated by the traveling motor 19 against the upper surface B. .

  FIG. 5 is a diagram for explaining the configuration of the column portion 31. FIG. 6 is a diagram for explaining the configuration of the coupling mechanism 33. FIG. 7 is a view for explaining the configuration of the lock mechanism 47.

  As shown in FIGS. 1 and 2, each of the pair of support members 30 is supported by a pillar portion 31 that is supported by the traveling body 10 and extends in the vertical direction of the bridge girder A, and a column portion 31 below the bridge girder A. And a holding portion 52 that holds the scaffold portion 60.

  As shown in FIG. 5, the column portion 31 is supported by the both ends 15 a of the beam 15 and extending in the vertical direction of the bridge beam A and supported by the lower end of the first pipe 32. And a circular tubular pole 41 extending downward from the lower end of the first pipe 32. Further, the column part 31 includes a pole 41 inserted therein and is supported rotatably with respect to the pole 41 and also supports a scaffolding part 60 and a second pipe 44 with respect to the pole 41. And a lock mechanism 47 for restricting the rotation of the second pipe 44 and releasing the restriction of the rotation of the second pipe 44.

  As shown in FIG. 6, the first pipe 32 is formed such that the upper end portion of the first pipe 32 extends upward beyond the beam 15. The first pipe 32 is connected to the end 15 a of the beam 15 through the connection mechanism 33.

  As shown in FIG. 6, the coupling mechanism 33 is supplied from the generator 34, the rack 34 fixed to the inner surface in the width direction of the first pipe 32, the pinion gear 35 that meshes with the rack 34 and rotates. And a motor 36 that rotates the pinion gear 35 with electric power. Further, the coupling mechanism 33 includes a pair of rails 37 that are fixed to the first pipe 32 while sandwiching both side portions of the rack 34, and a roller 38 that fits the pair of rails 37. Further, the coupling mechanism 33 includes a bracket 39 that supports the pinion gear 35, the motor 36, and the roller 38 on the end 15 a of the beam 15.

  When the pinion gear 35 supported by the beam 15 is rotated by the motor 36, the connecting mechanism 33 pushes the rack 34 in the vertical direction of the bridge girder A, thereby causing the first pipe 32 fixed to the rack 34 to move with respect to the beam 15. To move up and down. Thereby, the connection mechanism 33 can adjust the position of the pair of support members 30 in the vertical direction of the bridge beam A. The coupling mechanism 33 is detachably coupled to the beam 15 and the first pipe 32, and is configured to be disassembled and transported. The operation of the motor 36 is controlled by an operator operating a switch of the operation panel 40 fixed to one of the pair of truss frames 12, as shown in FIGS.

  As shown in FIG. 5, the pole 41 has the upper end of the pole 41 inserted into the first pipe 32. The pole 41 is detachably connected to the first pipe 32 using a bolt 42, and is configured to be disassembled and transportable. In addition, the pole 41 is inserted into the second pipe 44 at the middle portion and the lower end portion of the pole 41. When the pole 41 is inserted into the second pipe 44, the upper surface of the flange 43 provided at the lower end of the pole 41 comes into contact with the lower end surface portion 44 a of the second pipe 44. Is supported upward.

  As shown in FIG. 5, the second pipe 44 is provided with a plate-like step 45 provided on the lower end surface portion 44 a of the second pipe 44 and on which an operator can ride, and extending upward from the step 45. A ladder 46 that allows the operator to move up and down between the upper surface B and the step 45 is provided.

  As shown in FIG. 7, a pair of angles 45 a having a L-shaped cross section are provided on the lower surface of the step 45 provided on the lower end surface portion 44 a of the second pipe 44. Each of the pair of angles 45 a extends substantially in parallel along the lower surface of the step 45, and is disposed so that the distance between the opposing portions is smaller than the outer diameter of the flange 43.

  The second pipe 44 is supported by the pole 41 in a line contact by a pair of angles 45 a coming into contact with the upper surface of the flange 43 of the pole 41 inserted into the second pipe 44. Further, the second pipe 44 is formed in such a size that a gap is formed between the inner peripheral surface of the second pipe 44 and the outer peripheral surface of the pole 41 inserted into the second pipe 44. Accordingly, the second pipe 44 is supported so as to be smoothly rotatable with respect to the pole 41, and rotates around the pole 41 including the step 45 and the ladder 46.

  As shown in FIG. 7, the lock mechanism 47 is formed of four notches 48 formed at equal intervals along the outer edge of the flange 43, and a pair of rods that fit into the notches 48. A stopper 49 is disposed between the angles 45a and supported to be swingable with respect to the step 45. Further, the lock mechanism 47 is formed integrally with the stopper 49, is formed in a rod shape that extends upward from the stopper 49 through the step 45, and is supported so as to be swingable with respect to the step 45. A spring 51 supported between the pair of angles 45a and pressing the stopper 49 against the notch 48 is provided.

  As described above, the step 45 for supporting the stopper 49 is supported by the second pipe 44, and the flange 43 in which the notch 48 is formed is supported by the pole 41. For this reason, the lock mechanism 47 can restrict the rotation of the second pipe 44 relative to the pole 41 when the stopper 49 is pushed by the spring 51 and fitted into the notch 48. In addition, the lock mechanism 47 moves the stopper 49 formed at the tip of the lever 50 away from the notch 48 when the operator swings the lever 50 in the direction in which the spring 51 contracts, that is, inward in the width direction of the bridge beam A. By swinging, the restriction on the rotation of the second pipe 44 is released. The lever 50 penetrating from the stopper 49 through the step 45 may be formed so as to extend upward so that an operator on the upper surface B can grasp it. Further, the notch 48 is formed on the outer edge of the flange 43 every time it rotates 90 ° along the circumferential direction of the flange 43.

  FIG. 8 is a diagram for explaining the configuration of the holding unit 52.

  The holding | maintenance part 52 is supported by the pillar part 31 below the bridge beam A, as FIG.1 and FIG.2 shows. Specifically, as shown in FIG. 8, the holding portion 52 is supported by a ladder 46 provided in the second pipe 44 included in the column portion 31. The holding portion 52 is formed in a rectangular tube shape into which a pair of rod-like members 61 (to be described later) of the scaffold portion 60 can be inserted, and has a length capable of holding both end portions 61 a of the pair of rod-like members 61. The The holding part 52 is arranged so that the axial direction of the pair of rod-shaped members 61 inserted therein substantially coincides with the width direction of the bridge beam A.

  FIG. 9 is a diagram for explaining the configuration of the scaffold unit 60.

  As shown in FIG. 9, the scaffold unit 60 includes a pair of rod-like members 61 that are laid between the pair of support members 30 at intervals in the horizontal direction. Further, the scaffold portion 60 is a sheet in which both end portions 63b are supported by the pair of rod-shaped members 61 in a state where the center portion 63a is slackened so as to be positioned below the pair of rod-shaped members 61 between the pair of rod-shaped members 61. A shaped member 63 is provided. Furthermore, the scaffold part 60 includes a plate-like member 65 disposed at the central part 63 a of the sheet-like member 63 supported by the pair of rod-like members 61.

  Each of the pair of rod-shaped members 61 is formed in a circular tube shape. Each of the pair of rod-shaped members 61 is inserted so that both end portions 61 a of the pair of rod-shaped members 61 can be inserted into and removed from the inside of the rectangular tubular holding portion 52. That is, each of the pair of rod-shaped members 61 is held by the holding portion 52 by line contact. In addition, each of the pair of rod-shaped members 61 is held by the holding portion 52 so that the axial direction of each of the pair of rod-shaped members 61 substantially coincides with the width direction of the bridge beam A. Thereby, each of a pair of rod-shaped member 61 is hold | maintained at the holding | maintenance part 52 so that it can move smoothly along the width direction of the bridge beam A. FIG.

  In addition, each of the pair of rod-shaped members 61 is configured such that when the second pipe 44 rotates with respect to the pole 41, the pole 41 together with the second pipe 44 provided with the ladder 46 that supports the holding portion 52. Rotate around. That is, each of the pair of rod-shaped members 61 is supported by the second pipe 44 via the holding portion 52 and the ladder 46, and when the second pipe 44 rotates, the pair of rod-shaped members 61 rotate on the horizontal plane around the pole 41 as a rotation center. . As shown in FIG. 8, each of the pair of rod-like members 61 is detachably connected to the holding portion 52 using bolts 62 and can be disassembled and transported. Is done.

  The sheet-like member 63 is formed of a material such as a canvas having a strength capable of withstanding the weight of the operator, work equipment, the plate-like member 65 and the like. In the sheet-like member 63, each of both end portions 63b of the sheet-like member 63 is folded back toward the center portion 63a to form an annular portion 63c. Each of the pair of rod-like members 61 is inserted into the annular portion 63c formed in each of the both end portions 63b of the sheet-like member 63. Thereby, the sheet-like member 63 is supported by the pair of rod-like members 61 so as to be foldable and unfoldable along the axial direction of the pair of rod-like members 61.

  The sheet-like member 63 is provided with a plurality of reinforcing portions 63 d for reinforcing the strength of the sheet-like member 63. The plurality of reinforcing portions 63d extend along the direction from one end 63b of the sheet-like member 63 to the other end 63b, and are provided at predetermined intervals along the axial direction of the pair of rod-like members 61. . Although FIG. 9 shows an example in which a plurality of reinforcing portions 63 d are provided on one side of the sheet-like member 63, the plurality of reinforcing portions 63 d may be provided on both sides of the sheet-like member 63. The portions of both ends 63b of the sheet-like member 63 located between the plurality of reinforcing portions 63d are thinned out so that the sheet-like member 63 can be easily folded and unfolded along the axial direction of the pair of rod-like members 61. May be.

  The sheet-like member 63 is detachably provided with clamps 64 for fixing one end 63e of an annular portion 63c formed on each of both end portions 63b to the pair of rod-like members 61 with respect to the one end 63e. Thereby, when each of the pair of rod-shaped members 61 moves in the width direction of the bridge beam A, the sheet-like member 63 moves with the one end 63e fixed to the clamp 64 together with each of the pair of rod-shaped members 61. Then it can be folded.

  The plate-like member 65 is detachably disposed on the upper surface of the central portion 63a of the sheet-like member 63 supported by the pair of rod-like members 61. An operator can board the plate-like member 65 using the plate-like member 65 as a scaffold, and can perform work such as inspection and repair of the bridge. At this time, the worker can perform work by attaching a safety belt to the handrail 70. The handrail 70 is supported by the holding portion 52 and the ladder 46 and is provided so as to surround an operator who moves up and down the ladder 46 and an operator who rides on the step 45. When the scaffold 60 is assembled and disassembled, the plate-like member 65 is often in a removed state, and the worker's scaffold is often only in the state of step 45. The worker can work safely without falling from the scaffold 60 by attaching a safety belt to the handrail 70 and performing the work.

[2. Mode of operation of the scaffold part of the mobile scaffold device]
FIG. 10 is a diagram for explaining an operation mode of the scaffold unit 60 when the scaffold unit 60 is moved by traveling of the traveling body 10 and shows a state before the operation. FIG. 11 is a diagram for explaining an operation mode of the scaffold unit 60 when the scaffold unit 60 is moved by traveling of the traveling body 10 and is a diagram illustrating a state in which the pair of rod-shaped members 61 are moving. FIG. 12 is a diagram for explaining an operation mode of the scaffold unit 60 when the scaffold unit 60 is moved by traveling of the traveling body 10, and one end portion 61 a of each of the pair of rod-shaped members 61 is a holding unit. FIG. FIG. 13 is a view for explaining an operation mode of the scaffold unit 60 when the scaffold unit 60 is moved by traveling of the traveling body 10, and one end 61 a of each of the pair of rod-shaped members 61 is a pier C. It is a figure which shows a mode that it moved beyond.

  10 to 13 are plan views of the moving scaffold device 1 viewed from the rear to the front.

  When the mobile scaffold device 1 travels on the upper surface B of the bridge girder A, as shown in FIG. 10, the bridge pier C of the bridge girder A may interfere with the scaffold portion 60 and obstruct travel. Therefore, when the mobile scaffold device 1 approaches the pier C, the scaffold unit 60 is operated as shown in FIGS. 11 to 13.

  First, the operator removes the plate-like member 65 arranged on the sheet-like member 63. Subsequently, the operator grasps each of the pair of rod-shaped members 61 and moves them along the respective axial directions of the pair of rod-shaped members 61.

  Then, each of the pair of rod-shaped members 61 moves to the other side of the pair of support members 30 along the width direction of the bridge beam A as shown in FIG. The sheet-like member 63 is folded to the other side of the pair of support members 30 by moving one end 63e of the sheet-like member 63 fixed by the clamp 64 together with each of the pair of rod-like members 61.

  Eventually, in each of the pair of rod-like members 61, one end 61a of each of the pair of rod-like members 61 is detached from the holding portion 52, as shown in FIG. The scaffold part 60 is released from the support of one of the pair of support members 30 when one end 61a of each of the pair of rod-like members 61 is detached from the holding part 52. In the sheet-like member 63, one end 63 e of the sheet-like member 63 fixed by the clamp 64 moves beyond the bridge pier C to the other side of the pair of support members 30. The sheet-like member 63 is further folded on the other side of the pair of support members 30 than in the case of FIG.

  When the one end part 63e of the sheet-like member 63 fixed by the clamp 64 exceeds the bridge pier C, the operator removes the clamp 64 from the one end part 63e. Subsequently, the operator grasps each of the pair of rod-shaped members 61 and moves them in the same direction as in FIGS. 11 and 12.

  Then, as shown in FIG. 13, each of the pair of rod-shaped members 61 has one end portion 61 a of the pair of rod-shaped members 61 moving beyond the bridge pier C to the other side of the pair of support members 30. To do. The sheet-like member 63 is in a folded state similar to that in FIG. 12 on the other side of the pair of support members 30. Thereby, between each lower end part of a pair of supporting member 30 with which the scaffold part 60 was supported, when moving the scaffold part 60 by driving | running | working of the traveling body 10, the space which the pier C can pass is formed.

  As described above, the scaffold portion 60 is configured such that each of the pair of rod-like members 61 moves to the other side of the pair of support members 30 and the sheet-like member 63 moves to the other side of the pair of support members 30 and is folded. It can move to the other side of the pair of support members 30.

[3. Effect]
As described above, the mobile scaffold device 1 according to the present embodiment can release the support of the scaffold unit 60 from one of the pair of support members 30 and can move to the other side of the pair of support members 30. . For this reason, even if the pier C of the bridge girder A interferes with the scaffolding part 60 and the obstacle is traveling, the mobile scaffolding device 1 according to the present embodiment moves the scaffolding part 60 with a simple work to connect with the pier C. Interference can be suppressed. Accordingly, the mobile scaffold device 1 according to the present embodiment can travel on the upper surface B while avoiding the pier C without disassembling the mobile scaffold device 1. Moreover, the mobile scaffold device 1 according to the present embodiment can realize a scaffold for a bridge such as an overpass that is difficult for a vehicle to pass through with the above-described simple configuration. Therefore, the mobile scaffold device 1 according to the present embodiment can be applied to a bridge where it is difficult for an automobile to pass, and can provide a mobile scaffold having high workability with a simple configuration.

  Moreover, since the pair of supporting members 30 are connected to the beam 15 via the connecting mechanism 33, the moving scaffold device 1 according to the present embodiment adjusts the positions of the pair of supporting members 30 in the vertical direction of the bridge beam A. be able to. Furthermore, since the pair of booms 14 is coupled to the beam 15 so as to be movable along the axial direction of the beam 15 in the mobile scaffold device 1 according to the present embodiment, the distance between the pair of booms 14 in the width direction of the bridge beam A and The distance between the pair of truss frames 12 can be adjusted. For this reason, even if the shape of the bridge girder A differs for every work site, the moving scaffold apparatus 1 which concerns on this embodiment can arrange | position the scaffold part 60 in the appropriate position under the bridge girder A. FIG. Therefore, since the mobile scaffold device 1 according to the present embodiment can be applied to various bridges, versatility can be improved.

  Furthermore, since the pair of booms 14 are formed to be able to extend and contract in the vertical direction of the bridge beam A, the moving scaffold device 1 according to the present embodiment can adjust the position of the beam 15 in the vertical direction of the bridge beam A. For this reason, even if the height of the fence D etc. provided in the upper surface B of the bridge girder A differs for every work site, the moving scaffold apparatus 1 which concerns on this embodiment makes a pair of support member 30 the width direction of the bridge girder A. It can arrange | position to both outer sides and the scaffold part 60 can be arrange | positioned in an appropriate position. Therefore, since the mobile scaffold device 1 according to the present embodiment can be applied to various bridges, versatility can be further improved.

[4. Others]
In the above-described embodiment, the mobile scaffold device 1 corresponds to an example of the “mobile scaffold device” recited in the claims. The traveling body 10 corresponds to an example of a “running body” described in the claims. The pair of support members 30 corresponds to an example of “a pair of support members” recited in the claims. The scaffold part 60 corresponds to an example of a “scaffold part” recited in the claims. The pair of rod-shaped members 61 corresponds to an example of “a pair of rod-shaped members” recited in the claims. The column portion 31 corresponds to an example of a “column portion” described in the claims. The holding unit 52 corresponds to an example of a “holding unit” recited in the claims. The sheet-like member 63 corresponds to an example of a “sheet-like member” described in the claims. The plate-like member 65 corresponds to an example of a “plate-like member” described in the claims. The beam 15 corresponds to an example of a “beam” recited in the claims. The connection mechanism 33 corresponds to an example of a “connection mechanism” recited in the claims.

  It will be apparent to those skilled in the art that the above-described embodiments can be applied to each other, including modifications.

  The above description is intended to be illustrative rather than limiting. Thus, it will be apparent to one skilled in the art that modifications may be made to the embodiments of the present invention without departing from the scope of the claims.

  Terms used throughout the specification and claims are to be interpreted as “non-limiting” terms. For example, the terms “include” and “included” should be interpreted as “not limited to those described as included”. The term “comprising” should be interpreted as “not limited to what is described as having”.

DESCRIPTION OF SYMBOLS 1 Moving scaffold apparatus 10 Running body 11 Portal frame 12 A pair of truss frame 12a Lower frame 13 Caster 14 A pair of boom 14a Upper frame 14b Lower frame 14c Support pipe 15 Beam 15a End 16 Traveling drive part 17 Wheel 18 Steering handle DESCRIPTION OF SYMBOLS 19 Traveling motor 20 Generator 21 Bogie 30 A pair of support member 31 Column part 32 1st pipe 33 Connection mechanism 34 Rack 35 Pinion gear 36 Motor 37 A pair of rail 38 Roller 39 Bracket 40 Operation panel 41 Pole 42 Bolt 43 Flange 44 2nd Pipe 44a Lower end surface portion 45 Step 45a Pair of angles 46 Ladder 47 Lock mechanism 48 Notch 49 Stopper 50 Lever 51 Spring 52 Holding portion 60 Scaffolding portion 61 Pair of rod-shaped members 61a End portion 62 Bo DOO 63 sheet member 63a central portion 63b end portion 63c the annular portion 63d reinforcing portion 63e one end 64 clamp 65 plate member 70 handrail A bridge deck B top C piers D fence

Claims (4)

A moving scaffold device for moving a scaffold in a direction in which the bridge girder extends below the bridge girder,
A traveling body traveling on the upper surface of the bridge girder;
A pair of support members that are supported by the traveling body and extend below the bridge beam on both outer sides in the width direction of the bridge beam;
A scaffold part supported between the lower ends of the pair of support members and moved by running of the running body;
With
The scaffold part can be released from the support of one of the pair of support members and can be moved to the other side of the pair of support members.
Mobile scaffold device. The scaffold portion includes a pair of rod-like members that are laid between the pair of support members at intervals in the horizontal direction,
Each of the pair of support members is
A pillar portion supported by the traveling body and extending in the vertical direction of the bridge girder,
A holding portion that is supported by the column portion below the bridge beam and holds both ends of the pair of rod members so that each of the pair of rod members can move in the width direction of the bridge beam,
Including
The scaffold part is
When one end of each of the pair of rod-shaped members is detached from the holding portion, the support with one of the pair of support members is released,
Each of the pair of rod-shaped members detached from the holding portion moves to the other side of the pair of support members;
The mobile scaffold device according to claim 1. The scaffold part is
A sheet-like member whose both ends are respectively supported by the pair of rod-shaped members in a state where the central portion is slack so as to be positioned below the pair of rod-shaped members between the pair of rod-shaped members,
A plate-like member disposed at the central portion of the sheet-like member supported by the pair of rod-like members;
Further including
The plate member is detachably disposed with respect to the sheet member,
The sheet-like member is supported so that it can be folded and unfolded along the axial direction of the pair of rod-like members.
The mobile scaffold device according to claim 2. The traveling body includes a beam extending toward both outer sides in the width direction of the bridge girder and supporting the pair of support members,
The pair of support members are respectively connected to both ends of the beam via a connection mechanism,
The connection mechanism is capable of adjusting the position of the pair of support members in the vertical direction of the bridge beam.
The mobile scaffold device according to any one of claims 1 to 3.