JP2008088765A - Movable scaffolding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a movable scaffolding installable in many buildings. <P>SOLUTION: This movable scaffolding has a traveling unit 10 arranged on the upper edge of a projection part W of the building B, a guide rail 60 extending downward from the traveling unit 10, and a bucket 70 lifting along the guide rail 60, and lifts the bucket 70 by winding and delivering a wire 31 by a winch 30, by connecting the wire 31 end extending from the winch 30 on the traveling unit 10 to the bucket 70. The traveling unit 10 has a plurality of traveling rollers 16 and 17 traveling on the projection part upper edge, an outside side roller 21 rolling along a projection part outside surface, and an inside side roller 22 rolling along a projection part inside surface. The inside side roller 22 is vertically movably installed in the traveling unit 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mobile scaffold device used in an operation performed while an operator moves along an outer wall of a building, such as a remodeling operation of an outer wall of a building.

  As a conventional mobile scaffold device, a traveling device installed so as to be hooked on the upper edge of a protruding part of a building, a guide rail connected to the traveling device in a suspended state, and capable of moving up and down along the guide rail And a winch installed on a traveling device, and an end of a wire wound around a winch winding drum is connected to the bucket. (See Patent Document 1).

In this mobile scaffold device, when the traveling device is moved along the upper edge of the protruding portion, the riding bucket moves laterally along the upper edge of the protruding portion, and the wire is wound up or fed out by the winch drum. And the boarding bucket goes up and down. Therefore, the worker who rides on the boarding bucket can move to an arbitrary position along the outer wall of the building, and can perform work such as remodeling work at that position.
Japanese Patent No. 3531820

  By the way, the shape of the protruding part of the building which is the installation destination of the mobile scaffold device is various. In particular, in recent years, the appearance of buildings has been designed, and the degree of diversity is increasing.

  This invention is made | formed in view of such a problem, and makes it a subject to provide the mobile scaffold apparatus which can be installed in more buildings.

  In order to solve the above problems, the present invention is connected to the traveling unit installed on the upper edge of the projecting portion of the building in a movable state along the extending direction of the upper edge, A guide rail installed in a state extending downward from the traveling unit, a boarding bucket attached to the guide rail so as to be movable up and down, a winch installed in the traveling unit, and one end side wound around the winch, A movable scaffolding device that lifts and lowers the bucket by winding or unwinding the wire with a winch, wherein the traveling unit has an upper edge surface of the protrusion. In addition, a plurality of upper edge travel rollers that are in contact with each other in a state of being rollable along the extending direction, and a state of being able to roll along the extending direction on the building outer surface of the protrusion. An outer side roller to be touched, and an inner side roller that is in contact with the building inner surface of the protrusion in a state that allows rolling along the extending direction, and the inner roller is movable in a vertical direction. It is a mobile scaffold apparatus installed in the unit main body of the traveling unit.

  A second aspect of the present invention is the mobile scaffold device according to the first aspect, wherein the outer roller is installed in a unit main body of the traveling unit so as to be movable up and down.

  A third aspect of the present invention is the mobile scaffold device according to the first aspect, wherein the outer roller is attached to a swing arm that is swingably disposed on the unit body. .

  A fourth aspect of the present invention is the mobile scaffold device according to any one of the first to third aspects, wherein the traveling unit includes a boom whose tip projects outward from the building, The boom is movable forward and backward along the direction in which the boom extends, and includes a pulley on which the wire is hung. The guide rail is connected to the boom in a suspended state, and moves the boom forward and backward. Then, the pulley attached to the boom moves forward and backward, and the suspension position of the bucket and guide rail moves close to and away from the building.

  Invention of Claim 5 is a movable scaffold apparatus of Claim 4, Comprising: The said boom is more than the front end side pulley attached to the front end side from the connection position with the said guide rail, and a connection position. A rear end pulley attached to the rear end side, and the wire is used in a state of being hung on one of the pulleys, and the bucket is located on the building separation side of the guide rail. The bucket can be mounted on the guide rail so that it can be moved up and down in a state of being disposed, and can be mounted on the guide rail so that it can be moved up and down on a side closer to the building. Is lifted and lowered by a wire hung on the front end side pulley, and a bucket disposed on the building proximity side is lifted and lowered by a wire hung on the rear end side pulley.

  A sixth aspect of the present invention is the mobile scaffold device according to the fifth aspect, wherein the bucket includes an inner plate on a side close to the guide rail and an outer plate on a side away from the guide rail. The inner plate is pivotally supported at its lower end so that the upper end can be tilted away from the bucket, and the outer plate is tilted toward the side away from the bucket. It is pivotally supported at its lower end so as to be able to rotate.

  A seventh aspect of the present invention is the mobile scaffold device according to any one of the fourth to sixth aspects, wherein the boom includes an extension portion extending inward of the building, The boom guide member is installed in the building in a state where the traveling unit extends in the moving direction and intersects with the boom extension, and the boom and the guide member are installed at the intersection of the boom extension and the guide member. And a guide member that guides the boom that moves in the moving direction of the traveling unit in the extending direction of the guide member.

  In the first aspect of the present invention, when the traveling unit is installed on the upper edge of the projecting portion of the building, the inner roller that contacts the building inner surface of the projecting portion can move up and down on the unit body of the traveling unit. is set up. The projecting part of the building where the traveling unit is installed has a wide variety of shapes, and when the height dimension of the inner surface of the projecting part is small, that is, from the bottom surface of the projecting part to the upper edge of the projecting part. The height may be low. If the height of the inner surface of the building is low, the lower end portion of the inner roller may hit the bottom surface of the inner side of the building, and the traveling unit may not be stably installed on the protrusion. In this regard, according to the present invention, since the inner roller can be moved up and down, the inner roller can be brought into contact with the inner surface of the building without being abutted against the bottom surface inside the building, and the traveling unit is stabilized. It can be installed on the protruding part of the building.

  According to a second aspect of the present invention, the outer roller is installed on the unit main body of the traveling unit so as to be movable up and down. In the projecting part of the building where the traveling unit is installed, there may be irregularities on the outer surface of the projecting part of the building. If the contact position of the outer roller is uneven, the outer roller cannot be brought into contact with the outer surface of the building in a stable state, and the outer roller may not roll in a stable state. In this regard, according to the present invention, since the outer roller can be moved up and down, the outer roller can be brought into contact with a position where the outer roller can roll in a stable state, and the traveling unit installed on the protrusion is in a stable state. It can be run with.

  According to a third aspect of the present invention, the outer roller is attached to a swing arm that is swingably installed on the unit body. In the projecting portion of the building where the traveling unit is installed, the building outer surface connected to the upper edge of the projecting portion may be an inclined surface instead of a vertical surface. When the building outer surface which is an inclined surface is connected to the upper edge of the protrusion, the outer roller supported by the rotating shaft extending in the vertical direction may not be brought into contact with the outer surface. In this regard, according to the present invention, the outer roller can be brought into an inclined state by swinging the swing arm that supports the outer roller, and the outer roller can be brought into contact with the outer surface of the building that is an inclined surface. . If the outer roller can be brought into contact with the outer surface of the building, the traveling unit can travel in a stable state.

  According to a fourth aspect of the present invention, the traveling unit includes a boom having a tip projecting outward from the building, the boom being movable forward and backward along the boom extending direction, and the wire. The guide rail is connected to the boom in a suspended state. When the boom is moved forward and backward, the pulley attached to the boom moves forward and backward to move the bucket and the guide rail. The hanging position is moved close to and away from the building. In the building where the travel unit is installed, the building outer surface of the protrusion and the building outer surface below the protrusion are not flush with each other, and the building outer surface below the protrusion is located on the outer side. is there. In this case, in the structure in which the guide rail is suspended from the traveling unit installed on the protrusion, the guide rail may not be suspended vertically along the building outer surface below the protrusion. In this regard, according to the present invention, the guide rail suspended by the boom can be moved forward and backward by moving the boom forward and backward, so the outer surface below the protrusion is more than the outer surface of the protrusion. Even in the case where it is located outside, the guide rail can be suspended vertically along the outer surface below the protrusion.

  According to a fifth aspect of the present invention, the boom includes a front end side pulley attached to the front end side from the connection position with the guide rail, and a rear end side pulley attached to the rear end side from the connection position. The wire is used in a state of being hung on one of the pulleys, and the bucket can be attached to the guide rail so as to be movable up and down in a state of being disposed on the building separation side of the guide rail. And can be attached to the guide rail so as to be able to be raised and lowered in a state of being arranged on the building proximity side of the guide rail, and the bucket arranged on the building separation side is raised and lowered by the wire hung on the pulley on the front end side, A bucket disposed on the building proximity side is moved up and down by a wire hung on the rear end side pulley. In the building where the traveling unit is installed, the building outer surface of the projection and the building outer surface below the projection are not flush with each other, and the building outer surface below the projection is located more inside. is there. In this case, if the guide rail is hung vertically along the outer surface of the protrusion, the guide rail and the outer surface of the building are separated from each other at the lower position of the protrusion, and the worker on the bucket is outside the building. It may not be possible to work on the surface. In this regard, according to the present invention, since the bucket can be arranged on the building proximity side of the guide rail, even if the outer surface below the protruding portion is located on the inner side than the protruding portion outer surface, the bucket By arranging at a position close to the building outer surface, the bucket can be arranged at a position close to the building outer surface below the protrusion, and the work can be easily performed on the building outer surface.

  In the invention according to claim 6, the bucket includes an inner plate on a side close to the guide rail and an outer plate on a side separated from the guide rail, and the inner plate has an upper end portion thereof. It is pivotally supported at its lower end so that it can tilt to the side away from the bucket, and the outer plate rotates at its lower end so that its upper end can be tilted away from the bucket. It is supported freely. If there is a gap between the suspended bucket and the outside surface of the building, the gap between the bucket and the outside surface of the building will be displayed when an operator who has boarded the bucket is performing some work on the outside surface of the building. There is a possibility of dropping garbage. In this regard, according to the present invention, the inner plate and the outer plate of the bucket can be rotated, and by rotating, the upper end of the inner plate and the outer plate can be tilted away from the bucket. And by making it incline, an inner side board or an outer side board can be made to contact a building outer surface. The separation distance between the bucket and the building outer surface is often different each time the mobile scaffold device is installed, but according to the present invention, even if the separation distance fluctuates, the separation distance between the bucket and the building outer surface is close. By tilting the inner plate or the outer plate located at a position, it is possible to reliably prevent a gap from being generated between the bucket and the building outer surface. If the generation of a gap is prevented, even if an operator accidentally drops garbage, the fallen dust hits the tilted inner or outer plate and is collected in the bucket. Is reliably prevented from falling.

  In the invention according to claim 7, the boom includes an extension portion extending inward of the building, extends in the moving direction of the traveling unit, and intersects with the boom extension portion. In this state, the boom guide member is installed in the building, and the boom that is engaged with the boom and the guide member at the intersection between the extension portion of the boom and the guide member and moves in the moving direction of the traveling unit is installed. A guide member that guides in the extending direction of the guide member is provided. In a mobile scaffolding device that supports the guide rail and bucket by suspending and moving to the outside of the building, the boom can be moved to the outside of the building due to the weight of the guide rail and bucket that the boom suspends and supports. Limited distance to advance. In this regard, according to the present invention, the boom includes the extension portion, and the extension portion is engaged with the guide member, so that the boom can be supported in a stable state by the guide member. The boom can be extended farther outside the building. Further, since the guide member guides the movement of the boom that moves together with the traveling unit, the traveling unit can travel more smoothly together with the boom.

  Hereinafter, embodiments of a mobile scaffold device according to the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the mobile scaffold device includes a traveling unit 10 installed on the upper edge E of the protrusion W of the building B, and a winch 30 installed on the traveling unit. And when the traveling unit 10 is installed on the upper edge E of the protrusion W of the building B, the mobile scaffold device is supported by the traveling unit 10 with the tip protruding outside the building B, It has a guide rail 60 connected to the boom 40 in a suspended state, and a riding bucket 70 installed so as to be able to move up and down along the guide rail 60. The bucket 70 is suspended and supported by a wire 31 that is wound or fed by the winch 30.

  As shown in FIG. 2, the traveling unit 10 includes a left frame 11 and a right frame 12 installed in a state of extending horizontally in an inside / outside direction (front-rear direction) A of the building B, and front ends of the left and right frames 11 and 12. A unit frame 15 having a rectangular shape in plan view is provided, which includes an outer frame 13 having both ends fixed to the part and an inner frame 14 having both ends fixed to the rear ends of the left and right frames 11 and 12.

  Traveling rollers 16 and 17 that are in contact with the surface of the upper edge E of the protrusion W are attached to the lower surfaces of the left and right frames 11 and 12, respectively. The rotation shafts of the traveling rollers 16 and 17 extend in the extending direction C of the left and right frames 11 and 12, and in the present embodiment, the rotating shafts are orthogonal to the extending direction of the protrusions W and extend horizontally. Yes.

  A traveling motor 18 with a reduction gear (see FIG. 1) is coupled to the first traveling roller 16 shown on the left side of the two traveling rollers 16 and 17. Therefore, when this traveling motor 18 is operated, the traveling rollers 16 and 17 rotate, and the traveling unit 10 moves in the lateral direction, that is, the extending direction C of the upper edge E of the protrusion.

  The outer and inner frames 13 and 14 are formed with two through holes 13a and 14a penetrating in the vertical direction D, respectively. The openings of the through holes 13a and 14a are both square. And the outer leg members 19 and 19 are inserted in the through holes 13a and 13a of the outer frame 13 so as to be movable in the vertical direction D, respectively. The inner leg members 20 and 20 are inserted into the through holes 14a and 14a of the inner frame 14 so as to be movable in the vertical direction D, respectively. Each of the leg members 19 and 20 has a bar shape and a quadrangular cross section, and is inserted in a state where the four side surfaces face the left and right sides and the outer side. In addition, a fixture (not shown) for fixing the vertical positions of the leg members 19 and 20 is attached to the traveling unit 10, and the leg members 19 and 20 can be fixed at predetermined vertical positions. It is like that.

  As described above, the traveling unit 10 includes the unit frame 15 and the inner and outer leg members 19 and 20 each having a portion extending downward from the unit frame 15. The outer leg member 19 and the inner leg member 20 include the traveling unit 10. It is installed on the upper edge E of the protrusion W so as to straddle the upper edge E of the protrusion W.

  As shown in FIGS. 1 and 2, an outer side roller 21 that is in contact with the outer surface of the protrusion W is attached to the outer leg member 19, and the inner leg member 20 has a protrusion. An inner side roller 22 that is in contact with the inner side surface of the portion W is attached. Each of the side rollers 21 and 22 is attached in a state where the rotation axis direction thereof is directed in the vertical direction D with the traveling unit 10 installed on the upper edge E of the protrusion W. And each side roller 21 and 22 will rotate, rolling on the side surface of the projection part W in connection with this, if the traveling unit 10 moves to a horizontal direction. Of the side rollers 21 and 22, the inner side roller 22 is attached to the inner leg member 20 via the position adjusting mechanism 23, and can move close to and away from the inner surface of the protrusion W. . The position adjusting mechanism 23 used in the present embodiment uses a screw mechanism. On the other hand, the outer side roller 21 is fixed to the outer leg member 19. In this way, if at least one of the side rollers is attached so that the position thereof can be adjusted, the distance between the side rollers 21 and 22 can be adjusted according to the thickness of the protrusion W, and the side rollers 21 and 22 can be securely connected. Can be brought into contact with the side surface of the protrusion W.

  The boom 40 includes a boom main body 41 supported by the left and right frames 11 and 12 of the traveling unit 10, and a boom extension 42 connected to the inner and outer direction inner ends of the boom main body 41. It is supported by the traveling unit 10 in a movable state. The boom body 41 has both ends of the boom body left part 41a supported by the left frame 11, the boom body right part 41b supported by the right frame 12, and the boom body left part and the tip parts of the right parts 41a and 41b. The boom main body front portion 41c is fixed.

  More specifically, the left and right frames 11 and 12 of the traveling unit 10 supporting the left and right portions 41a and 41b of the boom main body have a cylindrical shape with a quadrangular cross section. The right portions 41a and 41b are inserted into the cylindrical left and right frames 11 and 12, respectively. Therefore, the boom 40 can be moved inward and outward by sliding the boom main body left and right portions 41a and 41b in the inner and outer directions A with respect to the left and right frames 11 and 12. The traveling unit 10 includes a fixture (not shown) for fixing the boom main body left and right parts 41a and 41b to the left and right frames 11 and 12, and the boom main body left and right parts. 41a and 41b can be positioned at predetermined positions.

  The boom main body left part and the right parts 41a and 41b are each provided with two pulleys 45 and 46 for hooking the wire 31 at the tip part extending outside the building. When the wire 31 is hung on the first pulley 45 attached to the tip of the boom main body left part and the right part 41a, 41b of the two pulleys 45, 46, the hung wire 31 is arranged outside the guide rail 60. Is done. On the other hand, when the wire 31 is hung on the second pulley 46 attached to the inner side in the inner / outer direction than the first pulley 45, the hung wire 31 is disposed inside the guide rail 60. In other words, as shown in FIG. 1, the first pulley 45 is used as a pulley for hanging the wire 31 when the bucket 70 is disposed outside the guide rail 60. On the other hand, as shown in FIG. 7, the second pulley 46 is used as a pulley for hanging the wire 31 when the bucket 70 is disposed inside the guide rail 60.

  The boom extension part 42 is detachably attached to the left and right parts 41a and 41b of the boom body, and has a substantially Y shape. More specifically, the boom extension part 42 supports the left and right arm parts 42a and 42b and the left and right arm parts 42a and 42b that are detachably connected to the left and right parts 41a and 41b of the boom body. And a body portion 42c. The base end of the boom main body left part and the right parts 41a and 41b on the inner side in the inner / outer direction is cylindrical, and the base end is open. The boom body left and right portions 41a and 41b and the boom can be connected to the boom body left and right portions 41a and 41b by inserting or removing the ends (outer ends) of the left and right arm portions 42a and 42b from the opening. The extension part 42 can be attached and detached. In this way, the boom 40 can be divided. If it is a structure which can be divided | segmented, the weight of each member which comprises the boom 40 will be lightened, and conveyance of the boom 40 and by extension, conveyance of a movable scaffold apparatus will become easy.

  A pin 47 as a connecting member for retaining is attached to the connecting part between the boom main body left and right parts 41a and 41b and the boom extension part 42. In the present embodiment, a retaining pin 47 is used, and the pin 47 is inserted into an insertion hole formed in the connecting portion of the boom main body left and right parts 41a and 41b and the boom extension part 42. The boom main body left and right parts 41a and 41b and the boom extension part 42 are reliably prevented from being detached.

  As shown in FIG. 4, a rail-shaped guide member 51 extending in the traveling direction of the traveling unit 10 is installed in the building B. This guide member 51 is installed in a state where it intersects with the boom extension 42, more specifically in a state where it is orthogonal. The guide member 51 is a steel material having an H-shaped cross section, and is installed in a state where the recesses 51a and 51a are located on both sides in the extending direction. A hanger 52, which is an engagement body, is attached to the boom extension 42 of the boom 40 in order to engage the boom extension 42 with the guide member 51. The hanger 52 includes rollers 52 a and 52 a engaged with the recesses 51 a and 51 a of the guide member, and is movable along the guide member 51. Therefore, when the boom 40 moves in the extending direction (traveling direction) C of the guide member 51, the movement can be smoothly guided. Further, since the roller of the hanger 52 is engaged with the recesses 51a and 51a of the guide member 51, the inner and outer ends of the boom 40 are prevented from jumping upward. Therefore, a heavier weight can be suspended at the tip of the boom 40 from which the guide rail 60 and the bucket 70 are suspended.

  Further, a connecting bracket 48 used for connecting the guide rail 60 is attached to the boom main body front portion 41 c of the boom 40.

  As shown in FIG. 5, the guide rail 60 has a ladder shape, and has a predetermined gap between two rail members 61, 61 having a U-shaped cross section arranged in parallel and both rail members 61, 61. And a plurality of bars extending in the lateral direction attached at intervals of. Each rail member 61 has a concave portion having a U-shaped cross section directed outward. Of the bar members, the bar member 62 positioned on the uppermost side when the guide rail 60 is installed on the travel unit 10 is provided with a connection hole 63a used for connecting the guide rail 60 to the travel unit 10. 63 is attached. Therefore, when a connecting pin (not shown) is inserted in a state where the connecting hole 63a and the connecting hole 48a of the traveling unit 10 are overlapped, the guide rail 60 is connected to the traveling unit 10 (see FIG. 3).

  And the metal fitting 65 in which the connection hole 65a was formed is attached also to the bar 64 located in the lowest side when installing. Therefore, a plurality of guide rails 60 can be connected by overlapping the upper connection hole 63a of another guide rail 60 on the lower connection hole 65a and fastening it with a connection pin. Furthermore, the guide rail coupling body of a required length can be prepared by connecting the guide rails one after another.

  Moreover, the bar 66 installed in positions other than an upper end and a lower end among the several bar extended in the horizontal direction is detachable with respect to a guide rail. More specifically, as shown in FIG. 5B, each rail member 61 has an engaging member 67 for hooking a rod member 66 on the inner surface facing the other rail member 61. I have. The engagement member 67 includes an attachment portion 67a for the rail member 61 and a hook portion 67b on which the bar member 66 is hooked. The hook portion 67 b includes a U-shaped groove 67 c for hooking the bar 66, and a gap is formed between the rail member 61. On the other hand, the bar 66 is provided with small diameter portions 66a and 66a that can be engaged with the U-shaped groove 67c at both ends, and the rail material 61 is hooked on the outer end of each small diameter portion 66a. An engagement plate 66b to be inserted into the gap between the portion 67b is attached. Therefore, if the narrow plate portions 66a and 66a of the bar 66 are hooked on the groove 67c while the engagement plates 66b and 66b at both ends of the bar 66 are inserted into the gap, the bar 66 is attached to the guide rail 60 without falling off. Can be attached. And if the force which pushes upward from the lower side is applied to the attached bar 66, the bar 66 can be easily removed from the guide rail 60.

  In addition, the bar 62 positioned on the uppermost side of the guide rail 60 is formed with a hook hole (hanging portion) 62a for hanging and supporting the guide rail 60, in addition to the connecting hole 63a. As will be described later, when the guide rail 60 is coupled to the traveling unit 10, the guide rail 60 needs to be pulled up to the height of the traveling unit 10. The hooking hole 62a is used in this lifting operation.

  As shown in FIG. 1, a riding bucket 70 is attached to the guide rail 60 so as to be able to move up and down along the guide rail 60.

  The bucket 70 includes a bottom plate 71 attached to a frame (not shown) and four side plates 72 to 75 arranged in four directions, and an upper portion is an opening. An operator can board the bucket 70 through this opening. Of the four side plates 72 to 75, the inner plate 72 arranged on the side close to the guide rail 60 is rotatably attached to the inner plate lower portion 72a fixed to the bottom plate 71 and the inner plate lower portion 72a. And an inner plate upper portion 72b. That is, as shown in FIG. 1, the inner plate upper part 72 b can be tilted to the side away from the bucket 70 at its upper end. Similarly, an outer plate 73 (see FIG. 6) disposed on the side away from the guide rail 60 includes an outer plate lower portion 73a fixed to the bottom plate 71, and an outer plate rotatably attached to the outer plate lower portion 73a. And an upper portion 73b. That is, as shown in FIG. 6, the outer plate upper part 73 b can be tilted to the side away from the bucket 70 at its upper end.

  The bucket 70 is attached to the guide rail 60 via a slider 76 attached to the concave portion of the guide rail 60 having a U-shaped cross section so that it can roll up and down smoothly along the guide rail 60. ing.

  By the way, the slider 76 can be removed from the guide rail 60 when the slider 76 is moved to the upper end or the lower end of the rail member 61 of the guide rail 60. The slider 76 can be attached not only to the recess of the rail material 61 of the guide rail 60 with the bucket 70 disposed outside the guide rail 60 in the inner and outer direction A as shown in FIG. Even when the bucket 70 is disposed inside the guide rail 60 in the inside / outside direction A as described above, it can be attached to the recess of the rail material 61 of the guide rail 60. That is, according to the mobile scaffold device of the present embodiment, the bucket 70 can be lifted and lowered with the bucket 70 disposed outside the guide rail 60 according to the situation, and the bucket 70 can be lifted and lowered while disposed inside the guide rail 60. Can be made.

  Here, the embodiment is described based on a state in which the bucket 70 is disposed outside the guide rail 60.

  In the bucket 70, two lock arms 77, 77 that can be hooked on the bar 62 of the guide rail 60 are attached to the upper end of the inner plate 72 located on the guide rail 60 side (see FIG. 1). Each lock arm 77 is pivotally attached to the upper end of the inner plate 72 of the bucket 70 at the base position, and can be hooked on the bar members 62, 64, 66 of the guide rail 60 (see FIG. 1 (position indicated by a two-dot chain line in FIG. 1) and an unlocked position (a position indicated by a solid line in FIG. 1) that is not caught. The direction of the rotation axis of the lock arm 77 is a horizontal direction parallel to the moving direction of the traveling unit 10.

  Each lock arm 77 is formed with a through hole to which two wires 31 used for raising and lowering the bucket 70 are fastened. That is, the bucket 70 is suspended and supported by the wire 31. The wire 31 can be wound and fed by the winch 30. When the wire 31 is wound up by the winch 30, the bucket 70 is raised, and when the wire 31 is drawn, the bucket 70 is lowered.

  The wire 31 is fastened at a position on the distal end side of the lock arm 77. Therefore, when the bucket 70 is suspended and supported by the wire 31, the lock arm 77 is located at the unlock position. In this state, the lock arm 77 is not caught by the bar members 62, 64, 66, and the bucket 70 can be raised and lowered freely along the guide rail 60.

  A spring (not shown) is connected between each lock arm 77 and the inner plate 72 of the bucket 70. This spring is in an extended state when the lock arm 77 is located at the unlock position, and applies an urging force to the lock arm 77 so as to rotate toward the lock position. That is, when the bucket 70 is suspended and supported by the wire 31, the lock arm 77 of the bucket 70 is constantly applied with a biasing force that rotates to the lock position. Accordingly, when the upward pulling force, for example, by removing the wire 31 from the suspended support state is released, the lock arm 77 automatically rotates to the locked position by the biasing force of the spring.

  The bucket 70 is suspended and supported by two left and right wires 31, 31. As shown in FIG. 2, the traveling unit 10 has a left used for winding and unwinding the left and right wires 31, 31. And the right winch 30,30 is installed. Each winch 30, 30 includes a lifting motor 32 with a reduction gear, and a drum 33 that is rotatably supported by the lifting motor 32. The rotating shaft of the drum 33 is installed so as to face in the horizontal direction when the traveling unit 10 is installed on the upper edge E of the protruding portion W extending horizontally. Each drum 33 is for winding the wire 31, and is attached so as to be positioned on the same axis. The drum 33 is detachably attached to an output shaft (not shown) of the motor 32.

  The traveling unit 10 is provided with a control unit 34 that houses a controller (not shown) that controls the operations of the traveling motor 18 and the lifting motors 32, 32 (see FIG. 1). The control unit 34 is equipped with a receiver that receives a control signal from the controller and sends it to the controller. On the other hand, the bucket 70 is provided with a remote controller 35 having a transmitter for transmitting control signals for the traveling motor 18 and the lifting motors 32 and 32. Therefore, the operator can remotely control the motors 18, 32, and 32 while being in the bucket 70. The remote control 35 is installed detachably with respect to the bucket 70, and the operator can operate the motors 18, 32, and 32 at any position other than the bucket 70, such as standing on the building B side. Can be controlled.

  A case where such a mobile scaffold device is installed on the upper edge E of the protrusion W of the building B will be described.

  In this case, first, the winches 30, 30 and the boom 40 are attached to the unit frame 15 of the traveling unit 10, and the traveling unit 10 to which these are attached is installed on the upper edge E of the protrusion W (see FIG. 1).

  Next, the outer side rollers 21 and 21 are brought into contact with the outer surface of the protrusion W. At this time, it is preferable that the outer side rollers 21 and 21 are brought into contact with the outer surface of the protrusion W as much as possible. However, the state of the concavo-convex shape of the outer surface of the protrusion W varies depending on the building. In this regard, in the mobile scaffold device of the present embodiment, the outer side rollers 21 and 21 can be positioned at suitable positions by moving the outer leg members 19 and 19 up and down. Many areas of 21 can be brought into contact with the outer surface of the protrusion W.

  And the position of the inner side rollers 22 and 22 is adjusted, and the inner side roller 22 is made to contact the inner surface of the projection part W (refer FIG. 1). With respect to the inner side rollers 22 and 22, the position in the vertical direction can be adjusted by moving the inner leg member 20 up and down, and the position in the inner and outer direction (front and rear direction) can be adjusted by using the position adjusting mechanism 23. Can be adjusted. Therefore, the inner side rollers 22 and 22 can be positioned at suitable positions by using these adjusting means. For example, even if the height of the inner surface is low, the inner side roller 22 is not brought into contact with the bottom surface of the inner surface by moving the leg member 20 upward with respect to the inner frame 14. Can be contacted.

  As described above, when the protrusion W is sandwiched between the inner and outer side rollers 21 and 22, when the traveling unit 10 is moved along the upper edge E of the protrusion W, the positional deviation in the inner and outer directions of the traveling unit 10 occurs. Thus, the traveling unit 10 can be moved in a stable state.

  Next, a boom extension 42 extending from the boom body 41 to the inside of the building B is connected to the boom body 41, and the guide member 51 of the boom 40 is installed in the building B. For example, when the mobile scaffold device is installed on the protrusion W on the roof of the building B as in the present embodiment, the guide member 51 is installed on the floor surface of the roof. At this time, the guide member 51 is installed in a position that extends in the moving direction of the traveling unit 10 and that intersects the boom extension 42. Further, the boom 40 and the guide member 51 are engaged with each other by a hanger 52 installed at the intersection of the boom extension 42 and the guide member 51. The hanger 52 is movable in the left-right direction along the guide member 51, and the boom extension 42 is engaged with the hanger 52 in a state of being movable inward and outward. Therefore, when the traveling unit 10 is caused to travel, the boom 40 can be moved in the left-right direction accordingly. Further, since the boom 40 is movable inward and outward with respect to the hanger 52, even if the installation direction of the guide member 51 does not completely coincide with the movement direction of the traveling unit 10 and a deviation occurs, Since the shift can be absorbed by the boom 40 moving inward and outward with respect to the engaging body, the boom 40 can be smoothly moved in the moving direction of the traveling unit 10.

  Then, the power cords (not shown) of the traveling motor 18 and the lifting motors 32, 32 are connected to a predetermined power source so that the traveling rollers 16, 17 and the winches 30, 30 are operable. Thereafter, the winches 30 and 30 are operated to feed out the two wires 31 and 31 from the drums 33 and 33, and the tips of the wires 31 and 31 are lowered until they reach the ground.

  In addition, a necessary number of guide rails 60 are prepared, and the prepared guide rails 60 are connected to each other on the ground.

  And the front-end | tip of the wires 31 and 31 are hooked in the hooking hole 62a of the guide rail 60 located in the uppermost side. The tips of the wires 31 and 31 can be provided with hooks, ring-shaped, or various shapes. In this state, the winches 30 and 30 are operated to wind up the wires 31 and 31, and the guide rail 60 is pulled upward. And the upper connection hole 63a of the uppermost guide rail 60 and the connection hole 48a of the traveling unit 10 are made to overlap (refer to FIG. 3). Then, the guide rail 60 is connected to the boom 40 of the traveling unit 10 through the connecting pins (not shown) through the overlapping connecting holes 48a and 63a. The operation of passing the connecting pin through the connecting holes 48a and 63a can be performed by reaching out from a place such as a veranda inside the protrusion W where the traveling unit 10 is installed. The guide rail 60 connected to the traveling unit 10 receives gravity and extends in the vertical direction.

  When the connection of the guide rail 60 to the boom 40 is completed, the position in the front-rear direction of the boom 40 attached to the unit frame 15 of the traveling unit 10 is then determined. A guide rail 60 is suspended from the boom 40. When the boom 40 is moved inward and outward, the guide rail 60 moves inward and outward. For example, as shown in FIG. 1, if the bucket 70 is disposed outside the guide rail 60, the boom 40 is positioned so that the guide rail 60 is disposed at a position close to the outer wall of the building B. Note that, as shown in FIG. 6, the bucket 70 may be disposed on the building B side with respect to the guide rail 60. In this case, the position of the boom 40 is positioned so that the outer end of the bucket 70 is disposed at a position close to the outer wall of the building B. When the position of the boom 40 is determined, the boom 40 is fixed to the frame of the traveling unit 10 by a fixture (not shown).

  When the boom 40 is positioned, the wires 31 and 31 hooked in the hooking holes 62a of the guide rail 60 are removed, the winch 30 is operated, and the two wires 31 and 31 are extended again until the tip reaches the ground. . Further, the boarding bucket 70 is attached to the guide rail 60 located on the lowermost side. Then, the corresponding wires 31 and 31 are connected to the lock arms 77 and 77 of the bucket 70, respectively, and the wires 31 and 31 are wound around the winches 30 and 30 so that tension is applied to the wires 31 and 31. take. Then, the lock arms 77 and 77 are rotated to be in the unlocked position, and the bucket 70 can be raised and lowered.

  As can be understood from the above description, the mobile scaffold device of the present embodiment can be easily assembled. Note that the removal work of the mobile scaffold device of the present embodiment is a work of executing the assembly work described so far in the reverse order, and thus the description thereof is omitted here.

The mobile scaffold device installed in this manner is operated and used by the remote controller 35 installed in the bucket 70. For example, when the operator wants to move to the right in the horizontal direction toward the building B, the operator operates the remote controller 35 to rotate the traveling motor 18 forward, and when he wants to move to the left, the operator rotates the traveling motor 18 in the reverse direction. I do. Then, if it is desired to move up, the remote controller 35 is operated, and the elevating motors 32 and 32 of the winches 30 and 30 are normally rotated to wind up the wires 31 and 31, and when it is desired to descend, the elevating motors 32 and 32 are reversed. Then, an operation of feeding out the wires 31, 31 is performed.
Suppressed to the limit.

  And the bucket 70 is located in a desired position by such operation, and the operation | work etc. with respect to the outer wall of the building B are performed.

  For example, as shown in FIG. 1, when working on a bucket 70 disposed outside the guide rail 60, the bar 66 of the guide rail 60 in front of the operator is removed. As shown in FIG. 5, the bar 66 is detachable from the rail members 61 and 61 of the guide rail 60 and can be removed. When the bar 66 is removed, the obstacle between the worker and the outer wall of the building B is eliminated, so that the work on the outer wall is facilitated and the work efficiency is improved. Further, before working on the outer wall or the like, the inner plate upper portion 72b of the bucket 70 is tilted toward the outer wall side of the building. Then, the upper end of the inner side plate upper part 72b will be in the state which hits the outer wall of a building. In this state, dust or the like that has fallen from the operator's hand during work contacts the inner plate upper part 72b in a tilted state and is collected in the bucket. In other words, if the inner plate upper part 72b is tilted toward the building side, it is possible to reliably prevent dust and the like from dropping below the bucket during work.

  In the mobile scaffold device of this embodiment, when both the wires 31 and 31 are cut for some reason, the lock arms 77 and 77 are automatically rotated from the unlock position to the lock position by the biasing force of the spring. It comes to move. The lock arms 77 and 77 rotated to the lock position are hooked on the rods 62, 64 and 66 that first hit when the bucket 70 is dropped. This stops the bucket 70 from dropping. As described above, the lock arms 77 and 77 of the present embodiment are automatically and instantaneously moved to the lock position when the wires 31 and 31 are cut, and are hooked on the bar members 62, 64 and 66 of the guide rail 60. The falling distance of the bucket 70 is minimized.

  Next, a mobile scaffold device according to another embodiment will be described.

  The mobile scaffold device according to the present embodiment is different from the mobile scaffold device according to the above-described embodiment in leg members 19 and 19 disposed on the outer side in the inner and outer directions of the traveling unit 10. Since the other structure is the same as that of the above embodiment, the same reference numerals are given to the same components, and the description thereof is omitted.

  As shown in FIGS. 7 and 8, in this embodiment, the leg members 19 and 19 are rotatably attached to the outer surfaces of the left and right frames 11 and 12 via a shaft body 81. The position of the shaft 81 is on one end side of each leg member 19, and the outer side rollers 21 and 21 are attached to the other end side. The direction of the axis of the shaft body 81 is the traveling direction of the traveling unit 10, that is, the left-right direction. Therefore, in a state where the outer side rollers 21 and 21 attached to the leg members 19 and 19 are positioned below the shaft body 81, the other end side of the leg members 19 and 19 is inwardly or outwardly inside, that is, the building B. When rotated to the side, the outer side rollers 21 and 21 can be brought into contact with the outer wall of the building B.

  Further, a fixing mechanism 82 for fixing the leg members 19, 19 is provided at a position close to the shaft body 81. By using this fixing mechanism 82, the leg members 19, 19 can be fixed in an inclined state with respect to the left and right frames 11, 12.

  More specifically, as shown in FIG. 9, the left leg member 19 and the left frame 11 have engagement plates 83 and 84 that constitute the fixing mechanism 82 at positions close to the shaft body 81, respectively. Is attached. Each engagement board 83 and 84 is disk-shaped, and is provided with holes 83a and 84a through which the shaft body 81 is inserted at the center. The engagement plates 83 and 84 are arranged so that the centers thereof are located on the shaft body 81. Each engagement board 83, 84 is provided with opposing surfaces 83b, 84b orthogonal to the shaft body 81, and each opposing surface 83b, 84b is formed with an uneven shape. This uneven shape is a meshing shape and can be meshed. When engaged, the two engagement plates 83 and 84 are fixed to each other.

  Further, the left leg member 19 is supported so as to be movable toward and away from the left frame 11 in the rotational axis direction of the shaft body 81. Therefore, when the leg member 19 is separated from the left frame 11, both the engagement plates 83 are separated from the engagement plate 84. In this state, the leg member 19 is rotatable with respect to the left frame 11. The leg member 19 is attached to one end side of the shaft body 81 protruding from the outer side surface of the left frame 11, and the other end side protruding from the inner side surface of the left frame 11 is screwed with a nut (not shown). It is possible. Therefore, if the nut is attached, the shaft body 81 will not come off the left frame 11 even if the leg member 19 is moved outward so as to be separated from the left frame 11. When the leg member 19 is moved closer to the left frame 11 from the state separated from the left frame 11, the opposing surfaces 83 b and 84 b of both engagement plates 83 and 84 come into contact with each other. Then, when the positions of the concave and convex shapes of the engagement plates 83 and 84 are adjusted to the meshing position and the leg member 19 is moved closer to the left frame 11 side, the engagement plates 83 and 84 are engaged. Become. In this state, the leg member 19 is fixed to the left frame 11. In this state, when the nut is tightened to the left frame 11, the leg member 19 is securely fixed by the frame. As described above, the leg member 19 is movable in the axial direction (left-right direction) of the shaft body 81 between the separated position separated from the unit frame 15 and the fixed position fixed to the left frame 11. The leg member 19 can be fixed to the left frame 11 at least at a fixed position.

  As shown in FIG. 9, the concavo-convex shape formed on the opposing surfaces of the engagement plates 83 and 84 is a concavo-convex shape extending radially from the center position of the engagement plates 83 and 84. The shape of each concave part and the convex shape are the same, and the concave shape of the concave part and the protruding shape of the convex part are also the same. Therefore, in any combination, if the concaves and convexes are arranged at corresponding positions, both the engagement plates can be engaged with each other. For example, if 36 convex portions are formed on the opposing surfaces of the engagement plates 83 and 84, the leg member 19 can be positioned every 10 °, and if 180 convex portions are formed. It can be positioned every 2 °.

  Here, the left leg member 19 and its fixing structure have been described. However, the right leg member 19 and its fixing structure are the same except that they are symmetrical structures. Description is omitted.

  With the mobile scaffold device having such a structure, as shown in FIGS. 7 and 8, the traveling unit 10 can be stabilized even when the outer surface of the protrusion W is not a vertical surface but an inclined surface. In this state, it can be installed on the upper edge of the protrusion W, and the traveling unit 10 can be driven in a stable state.

  In the present embodiment, the left and right leg members 19, 19 are configured to be independently rotatable, but the both leg members 19, 19 may be connected by a connecting member extending in the left-right direction. With such a structure, the left and right leg members 19, 19 can be integrally rotated.

  And in the said embodiment, the engagement board 83 by the side of the leg member 19 is directly attached to the leg member 19 fixed to the one end side of the shaft 81 among the pair of engagement boards 83 and 84 which mutually mesh. However, other structures may be used. For example, the cylindrical body may be fixed to one end side of the shaft body 81, the engagement board 83 may be attached to the side surface of the cylindrical body on the left frame 11 side, and the leg member 19 may be attached to the cylindrical body. At this time, a fixture for positioning the leg member 19 with respect to the cylinder is further provided. With such a structure, the position of the outer side roller 21 attached to the leg member from the frame can be adjusted by moving the leg member 19 relative to the cylinder. For example, if the leg member 19 is directed downward, the vertical position of the outer side roller 21 can be adjusted. In addition, since the cylindrical body and the leg member 19 can be rotated with respect to the unit frame 15, it is possible to cope with the case where the outer surface of the protrusion W is an inclined surface.

  Further, a mobile scaffold device according to another embodiment will be described.

  The mobile scaffold device of the present embodiment is different in structure from the mobile scaffold device of the above-described embodiment in the following points. That is, the connecting structure of the wire 31 to the bucket 70, the mounting structure of the hanger 52 that engages with the guide member 51 installed in the building B to the boom extension 42, and the boom main body left and right parts 41a and 41b. The structure on the distal end side is different from the structure of the leg members 19, 19 arranged on the outer side in the inner and outer direction of the traveling unit 10. Since structures other than these are the same as those in the above-described embodiment, the same components are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 13, in the present embodiment, the wire 31 is connected to the bucket 70 via a wire fixing metal fitting 36. However, you may make it use the lock arm 77 used in the said embodiment (refer FIG. 1 etc.).

  As shown in FIG. 13, in this embodiment, the guide member 51 installed on the roof of the building B is installed at a position near the outer wall of the building B, and the guide member 51 is the length of the boom 40. Is getting shorter. A hanger 52 that supports the rollers 52 a and 52 a engaged with the guide member 51 is attached to the rear end portion of the boom 40. However, you may make it use the boom 40 and the guide member 51 which are used by the said embodiment (refer FIG. 1 etc.).

  As shown in FIG. 13, two pulleys 45 and 46 are attached to the tip portions of the left and right boom portions 41a and 41b (only the left portion 41a is shown), respectively, as in the above embodiment. The guide rail 60 is connected through the connecting metal 48.

  In the present embodiment, the connecting metal fittings 48 are attached to a plurality of locations of the boom main body left part and the right parts 41a and 41b, and the metal fittings 63 of the guide rail 60 can be connected to the attachment metal fittings 48. More specifically, the connecting bracket 48 includes positions of the traveling unit 10 on the left and right frames 11 and 12 side of the two pulleys 45 and 46 (see FIG. 13), and the tip of the left and right portions 41a and 41b of the boom body. It is attached at a position (see FIG. 14). Further, the connecting metal fitting 48 is also attached to positions on the front end side of the left and right frames 11 and 12 (see FIG. 15).

  When the guide rail 60 is connected to the position shown in FIG. 13, the wire 31 is hung around the outside of the outer first pulley 45. If it does in this way, the bucket 70 arrange | positioned on the outer side of the guide rail 60 can be suspended and supported. When the guide rail 60 is connected to the position shown in FIG. 14, the wire 31 is first hung around the first pulley 45 from the top to the outside, and then passed between the first pulley 45 and the inner second pulley 46. 2 is hung on the upper side of the pulley 46 and lowered downward from the inner end of the second pulley 46. If it does in this way, the bucket 70 arrange | positioned inside the guide rail 60 can be suspended and supported. When the guide rail 60 is connected to the position shown in FIG. 15, the wire 31 is wound around the outside of the inner pulley 45 and lowered downward from the outer end of the inner pulley 46. If it does in this way, the bucket 70 arrange | positioned on the outer side of the guide rail 60 can be suspended and supported.

  As shown in FIG. 13, in this embodiment, leg members (only the left leg member is shown) 19, 19 are pivot support portions (only the left side is shown) 85 on the outer surfaces of the left and right frames 11, 12. , 85 so as to be rotatable. As shown in FIG. 13, the rotation support portion 85 includes a base plate 86 installed outside the boom main body left portion 41a, and a round plate 87 having a circular outer shape attached to the plate 86. A leg member 19 is attached to the round plate 87. The outer side roller 21 attached to the leg member 19 and the structure for supporting the outer side roller 21 are the same as those used in the above-described embodiment, and thus the description thereof is omitted here.

  As shown in FIG. 16, the base plate 86 has a pair of elongated holes 86 a and 86 a used for fixing the round plate 87, a shaft hole 86 b used for fixing the rotation center position of the leg member 19, and the leg member 19. A pair of arcuate guide holes 86c, 86c are formed for fixing in an inclined state. The round plate 87 is fixed with a number of fixing holes 87a used for fixing the round plate 87, a shaft hole 87b used for fixing the rotation center position of the leg member 19, and the leg member 19 in an inclined state. A pair of arcuate guide holes 87c are formed. Further, the leg member 19 is formed with a shaft hole 19a and a pair of fixing holes 19b for fixing the leg member 19 in an inclined state at the rotation center position.

  The round plate 87 is fixed to the base plate 86 by fixing holes 87 a of the round plate 87 and bolts 88 a and nuts (not shown) passed through the long holes 86 a of the base plate 86. At this time, the shaft hole 86 b of the base plate 86 and the shaft hole 87 b of the round plate 87 overlap, and the arc-shaped guide hole 87 c of the round plate 87 overlaps the outside of the arc-shaped guide hole 86 c of the base plate 86. . In this state, the shaft hole 19a of the leg member 19 is overlaid on the shaft holes 86b and 87b, the bolts 88b are passed through all the shaft holes, and the base member 86 and the round plate are attached to the leg member 19 with the bolts 88b and nuts (not shown). Attach to 87. The fixing holes 19b of the leg member 19 are overlapped with the overlapping arc-shaped guide holes 86c and 87c, the bolts 88c are passed through both guide holes, and the leg member 19 is vertically lowered by the bolts 88c and nuts (not shown). Secure in a directed or tilted state.

  As described above, the guide holes 86c and 87c used for fixing the leg member 19 have an arc shape, so that the guide holes 86c and 87c and the fixing hole 19b of the leg member 19 overlap each other within the range where the guide holes 86c and 87c overlap. The leg member 19 can be fixed to the base plate 86 and the round plate 87 while being inclined at an inclination angle.

  In addition, a plurality of types of fixing holes 87 a having different distances from the center of the round plate 87 are formed in the round plate 87. More specifically, an outer peripheral side fixing hole formed at a position near the outer periphery of the round plate 87 and a central side fixing hole formed at a position near the center of the round plate 87 are formed. As described above, elongated holes 86a and 86a are formed in the base plate 86 as holes for fixing the round plate 87. Both the outer peripheral side fixing hole and the center side fixing hole are elongated holes 86a. It is formed in the position which can be piled up. That is, each of the fixing holes 87 a can be used for fixing the round plate 87. The rotational position of the round plate 87 can be set depending on which of the fixing holes 87a is used to fix the round plate 87 so as to overlap the elongated hole 86a.

  When the rotation position of the round plate 87 is changed depending on which fixing hole 87a is selected, the position of the arcuate guide hole 87c formed in the round plate 87 can be changed. When the position of the arc-shaped guide hole 87c is changed, the angle adjustable range of the inclination angle of the leg member 19 is changed. As described above, when a plurality of fixing holes 87a for fixing the round plate 87 are provided, the position of the guide hole 87c can be changed by selecting the fixing hole 87a used for fixing, and the leg member as a whole. The settable range of 19 tilt angles can be expanded.

  Moreover, as a structure of the leg members 19 and 19, a structure as shown in FIG. 17 may be used.

  As shown in FIG. 17, the rotation support portion 85 of the leg members (only the left leg member is shown) 19, 19 has a base plate 86 installed outside the boom main body left portion 41 a and an outer shape attached to the plate 86. Is provided with a round plate 87, and the leg member 19 is attached to the round plate 87. In addition, about the structure similar to the leg member 19 shown by FIG. 16, the description is abbreviate | omitted here.

  As shown in FIG. 17, the base plate 86 is formed with a pair of arc-shaped guide holes 86c, 86c used for fixing the round plate 87 on the leg member side, and a large number of fixing holes 86d. The round plate 87 is formed with a pair of elongated holes 87d used for fixing to the base plate 86.

  The round plate 87 is illustrated by a bolt 88a and a nut (not shown) inserted through the fixing hole 86d and the elongated hole 87d, and a bolt 88c and a nut (not shown) inserted through the guide holes 86c and 86c. It is fixed to the base plate 86 using a nut that is not.

  When determining or changing the fixing position, only the bolt 88c is inserted into the guide holes 86c and 86c, and the bolt 88a is not inserted into the fixing hole 86d and the elongated hole 87d. When the bolt 88c and the nut are loosened, the round plate 87 can be rotated with respect to the base plate 86. In this state, the round plate 87 is rotated to align the elongated hole 87d of the round plate 87 with the position of one of the fixing holes 86d of the base plate 86. In addition, although the distance from the round plate rotation center of each fixing hole 86d is not constant, since the hole on the round plate 87 side is a long hole, the long hole 87 can be communicated with any of the fixing holes 86d. it can.

  Then, when the bolt 88a is inserted into the elongated hole 87d and the fixing hole 86d and tightened, the round plate 87 is fixed to the base plate 86, and the leg member 19 is fixed in a predetermined direction. The state shown in FIG. 17 is a state in which the leg member 19 extends vertically downward. The leg member 19 is fastened and fixed with a bolt 88a by aligning the position of the elongated hole 87d with another fixing hole 86d. It can be fixed in an inclined state.

  In the mobile scaffold device of this embodiment, a structure using the base plate 86 and the round plate 87 is used to support the leg member 19 so that the angle can be changed. However, the structure for supporting the leg member so that the angle can be changed is used. There are various possibilities. For example, a structure in which the leg member 19 is directly attached to the base plate 86 without using the round plate 87 may be employed.

  Further, the configuration of the mobile scaffold device according to the present invention is not limited to the mobile scaffold device of the above-described embodiment, and various modifications are possible within the scope of the gist of the invention.

  For example, in the first embodiment, the traveling rollers 16 and 17 are fixed to the left and right frames 11 and 12, but may be fixed to be movable up and down. With such a structure, when the projection W for installing the traveling unit 10 is inclined, the height of the traveling rollers 16 and 17 on the left and right is adjusted so that the frame is held horizontally. The unit 10 can be installed on the upper edge of the protrusion.

  Moreover, in the said 1st Embodiment, although only the inner side rollers 22 and 22 are attached to the leg members 20 and 20 via the position adjustment mechanism 23, it is not restricted to this structure. For example, the outer side rollers 21 and 21 may be attached to the leg members 19 and 19 via a position adjusting mechanism. With this structure, the positions of the outer side rollers 21 and 21 can be adjusted using the position adjusting mechanism. If the position of the outer side rollers 21 and 21 can be adjusted, the position of the traveling unit 10 in the front-rear direction can be adjusted so that the traveling unit 10 has a better front-rear balance.

  Moreover, in the said 2nd Embodiment, the other end side of the shaft 81 has a structure in which the nut can be screwed. However, as a structure on the other end side of the shaft body 81, for example, an elastic body that applies a force to the shaft body 81 to bias the other end of the shaft body 81 away from the inner surface of the left frame 11 is attached. It may be.

  For example, a coil spring is extrapolated to the shaft body 81 projecting inward from the inner surface of the left frame 11 and a stopper for preventing the coil spring from being detached is attached to the inner end of the shaft body 81. The structure can be mentioned. With such a structure, the leg member 19 attached to one end of the shaft body 81 is pulled outward in the axial direction against the biasing force of the coil spring, so that the leg member 19 can be easily moved to the separated position. Can be made. When the tension is released, the leg member 19 is moved to the fixed position side by the biasing force of the coil spring. Here, when the unevenness of the engagement plate 83 attached to the left frame 11 and the left leg member 19 is matched to the engagement position, the engagement plates 83 and 84 are engaged with each other by the urging force of the coil spring, and the leg The member 19 is held at a fixed position by the biasing force of the coil spring.

  Moreover, in the said embodiment, although the member which guides raising / lowering of the bucket 70 is only the guide rail 60, you may provide another member.

  For example, as shown in FIGS. 10 and 11, as a member for guiding the bucket 70, the guide wire 91, the upper end of which is locked to the locking portions 49, 49 of the boom 40 and the lower end of which reaches the ground. 91 may be used. The lower ends of the guide wires 91 and 91 are connected to anchors 92 and 92 which are weights installed at predetermined positions on the ground. The lengths of the guide wires 91 and 91 are set such that the anchors 92 and 92 are not loosened as much as possible while being anchored to the anchors 92 and 92 and the anchors 92 and 92 do not float in the air. Therefore, even if the wind blows, the wires 91 and 91 do not move greatly.

  As shown in FIG. 12, when the guide wires 91 and 91 are used, ring-shaped wire insertion portions 78 and 78 for inserting the guide wires 91 and 91 into the bucket 70 are provided. Then, the guide wires 91 and 91 are inserted through the wire insertion portions 78 and 78.

  With such a configuration, the guide wires 91 and 91 can also prevent the bucket 70 from shaking. In particular, as shown in FIG. 10, when the bucket 70 is moved further below the lowest end position L of the suspended guide rail 60, if there are guide wires 91, 91, the guide wires 91, 91 are provided. Thus, the bucket 70 can be prevented from shaking and the workability of the bucket occupant can be improved.

  The number of guide rails 60 suspended from the boom 40 can be selected as appropriate. Therefore, if the guide rail 60 is suspended until it reaches a state where the lowermost position L of the guide rail 60 reaches the ground level, the bucket 70 can be guided by the guide rail 60 regardless of the position at which the bucket 70 is raised or lowered. .

  However, if the guide rail 60 is suspended near the ground position when the mobile scaffold device is installed at a high position, the total weight of the guide rail 60 suspended from the boom 40 increases. If it does so, the upper limit of the weight which can be boarded or mounted in the bucket 70 will become light on apparatus balance. If the weight that can be carried or mounted on the bucket 70 is reduced, it may become impossible to mount materials necessary for the work, or the number of times of raising and lowering the bucket for replenishing materials may increase, and workability may deteriorate. In this respect, the guide wires 91 and 91 are extremely lighter than the guide rail 60. Therefore, if this is used, the suspended weight burden applied to the boom 40 can be reduced. Further, the region where the bucket 70 is prevented from shaking by the guide wires 91 and 91 is a position below the lowest end position L of the guide rail 60. That is, the region where the guide wire 91, 91 prevents the bucket 70 from shaking is limited to a relatively low-rise region, and therefore the guide wire 91, 91 can effectively prevent the bucket 70 from shaking. it can.

  In the above-described embodiment, the guide rail 60 is attached to the connecting bracket 48 provided on the boom 40 in a state in which the guide rail 60 can swing left and right. .

  For example, in the ladder-shaped guide rail 60 shown in FIG. 18, among the plurality of bar members extending in the lateral direction, the bar member 62 arranged at the uppermost position is rotatable on both sides via the bush 94. 61 is attached. The bush 94 includes a flange portion 94 a and is attached in a state where the flange portion 94 a abuts on the inner side surface 61 a of each rail member 61. Further, bolt fastening holes 93a are formed at both ends of the bar 62, and the bolts 96 are fastened to the guide rail 60 by fastening the fixing plates 95 to both ends of the bar 93. It can be attached. The bar 62 is provided with a protrusion 97 that prevents the bush 94 from moving in the inner direction. Thereby, the bush 94 is prevented from being detached from the rail material 61. When the guide rail 60 having such a structure is attached to the boom 40, the guide rail 60 can swing not only left and right but also back and forth, so that excessive force is not applied to the metal fitting 63.

It is a side view which shows the mobile scaffold apparatus of embodiment which concerns on this invention. It is a top view which shows the traveling unit of the mobile scaffold apparatus of FIG. It is a front view which shows the traveling unit of the mobile scaffold apparatus of FIG. It is a top view which shows the installation state of the mobile scaffold apparatus of FIG. (A) is a front view which shows the guide rail of a movable scaffold apparatus, (b) is an explanatory perspective view for demonstrating the attachment state of a bar. It is a side view which shows another installation state of the mobile scaffold apparatus of FIG. It is a top view which shows another embodiment of the mobile scaffold apparatus which concerns on this invention. It is a side view which shows the mobile scaffold apparatus of FIG. FIG. 9 is an explanatory perspective view for explaining a main part of the mobile scaffold device of FIG. 8. It is a front view which shows another embodiment of the mobile scaffold apparatus which concerns on this invention. It is a fragmentary top view which shows the XX plane of FIG. It is a plane sectional view showing the YY plane of FIG. It is a side view which shows another embodiment of the mobile scaffold apparatus which concerns on this invention. FIG. 14 is a side view showing a wire wrapping state different from FIG. 13. FIG. 14 is a side view showing a state in which a wire is further wound, which is different from FIG. 13. (A) is a side view which shows the support structure of the leg member different from the said embodiment, (b) is a side view which shows the state which removed the round plate from the base plate of the rotation support part of a leg member. . It is a side view which shows the state which removed the round plate from the base plate of the rotation support part about another leg member different from the said embodiment. It is a front view which shows another embodiment of a guide rail.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Traveling unit 15 Unit frame 16, 17 Traveling roller 19, 20 Leg member 21 Outer side roller 22 Inner side roller 30 Winch 31 Wire 40 Boom 41 Boom main body 42 Boom extension part 60 Guide rail 70 Bucket 81 Shaft body 83, 84 Engagement Panel 91, 91 Guide wire 92, 92 Anchor B Building E Projection upper edge W Projection

In order to solve the above problems, the present invention is connected to the traveling unit installed on the upper edge of the projecting portion of the building in a movable state along the extending direction of the upper edge, A guide rail installed in a state extending downward from the traveling unit, a boarding bucket attached to the guide rail so as to be movable up and down, a winch installed in the traveling unit, and one end side wound around the winch, A movable scaffolding device that lifts and lowers the bucket by winding or unwinding the wire with a winch, wherein the traveling unit has an upper edge surface of the protrusion. In addition, a plurality of upper edge travel rollers that are in contact with each other in a state of being rollable along the extending direction, and a state of being able to roll along the extending direction on the building outer surface of the protrusion. An outer side roller for touch, the building inner surface of the protrusion, the and an inner side rollers in contact in a state capable of rolling along the extending direction, the inner side roller is vertically movable state The mobile scaffold device installed in the unit main body of the traveling unit.

A second aspect of the present invention is the mobile scaffold device according to the first aspect, wherein the outer side roller is installed in a unit main body of the traveling unit in a vertically movable state.

A third aspect of the present invention is the mobile scaffold device according to the first aspect, wherein the outer side roller is attached to a swing arm that is swingably disposed on the unit body. is there.

According to the first aspect of the present invention, when the traveling unit is installed on the upper edge of the projecting portion of the building, the inner side roller contacting the building inner surface of the projecting portion is movable in the vertical direction. Is installed. The projecting part of the building where the traveling unit is installed has a wide variety of shapes, and when the height dimension of the inner surface of the projecting part is small, that is, from the bottom surface of the projecting part to the upper edge of the projecting part. The height may be low. If the height of the inner surface of the building is low, the lower end portion of the inner side roller may abut against the bottom surface of the inner side of the building and the traveling unit may not be stably installed on the protrusion. In this respect, according to the present invention, the inner side roller can be moved up and down, so that the inner side roller can be brought into contact with the inner surface of the building without hitting the bottom surface of the inner side of the building, etc. It can be installed on the protruding part of the building in a stable state.

In the invention according to claim 2, the outer side roller is installed in the unit main body of the traveling unit in a state of being movable up and down. In the projecting part of the building where the traveling unit is installed, there may be irregularities on the outer surface of the projecting part of the building. If the contact position of the outer side roller is uneven, the outer side roller cannot be brought into contact with the outer surface of the building in a stable state, and the outer side roller may not roll in a stable state. . In this respect, according to the present invention, the outer side roller can be moved up and down, so that the outer side roller can be brought into contact with a position where it can roll in a stable state, and the traveling unit installed on the protrusion can be stabilized. It is possible to drive in the state.

According to a third aspect of the present invention, the outer side roller is attached to a swing arm that is swingably installed on the unit body. In the projecting portion of the building where the traveling unit is installed, the building outer surface connected to the upper edge of the projecting portion may be an inclined surface instead of a vertical surface. When the building outer surface, which is an inclined surface, is connected to the upper edge of the protruding portion, the outer side roller supported by the rotating shaft extending in the vertical direction may not be brought into contact with the outer surface. In this regard, according to the present invention, the outer side roller can be inclined by swinging the swing arm that supports the outer side roller , and the outer side roller is brought into contact with the outer surface of the building, which is an inclined surface. be able to. If the outer side roller can be brought into contact with the outer surface of the building, the traveling unit can travel in a stable state.

In order to solve the above problems, the present invention is connected to the traveling unit installed on the upper edge of the projecting portion of the building in a movable state along the extending direction of the upper edge, A guide rail installed in a state extending downward from the traveling unit, a boarding bucket attached to the guide rail so as to be movable up and down, a winch installed in the traveling unit, and one end side wound around the winch, A movable scaffolding device that lifts and lowers the bucket by winding or unwinding the wire with a winch, wherein the traveling unit has an upper edge surface of the protrusion. In addition, a plurality of upper edge travel rollers that are in contact with each other in a state of being rollable along the extending direction, and a state of being able to roll along the extending direction on the building outer surface of the protrusion. An outer side roller to be touched, and an inner side roller in contact with the inner surface of the projecting portion in a state that allows rolling along the extending direction, and the inner side roller is movable up and down. And the outer side roller is a mobile scaffold device attached to a swing arm that is swingably mounted on the unit body .

The invention according to claim 3 is connected to the traveling unit installed on the upper edge of the projecting portion of the building in a state movable along the extending direction of the upper edge, and the traveling unit A guide rail installed in a state extending downward from the unit, a riding bucket attached to the guide rail so as to be movable up and down, a winch installed in the traveling unit, one end of which is wound around the winch, and the other end A movable scaffolding device that lifts and lowers the bucket by winding or unwinding the wire with a winch, the traveling unit on the upper edge surface of the protrusion, A plurality of upper edge running rollers that are in contact with each other in a state that allows rolling along the extending direction, and an outer surface that is in contact with the outer surface of the projecting portion in a state that allows rolling along the extending direction. A side roller; and an inner side roller that is in contact with the inner surface of the projecting portion in a state of being rollable along the extending direction, and the inner side roller is movable in a vertically movable state. The traveling unit is provided with a boom having a tip protruding outward from the building, and the boom is movable forward and backward along a boom extending direction. It has a front end pulley attached to the front end side from the connecting position with the guide rail, and a rear end side pulley attached to the rear end side from the connecting position, and the wire is hung on one of the pulleys. The guide rail is connected to the boom in a suspended state. When the boom is moved forward and backward, the guide rail is attached to the boom. When the pulley moves forward and backward, the suspension position of the bucket and the guide rail moves closer to and away from the building, and the bucket is arranged on the side away from the building of the guide rail. Can be attached to the guide rail in a state where the guide rail is arranged close to the building, and the bucket arranged on the building separation side can be hung on the tip pulley. It is a movable scaffold apparatus which raises / lowers by the wire which was raised and lowered by the wire hung on the said rear end side pulley by raising / lowering the bucket arrange | positioned at the said building proximity | contact side.

A fourth aspect of the present invention is the mobile scaffold device according to the third aspect , wherein the bucket includes an inner plate on a side close to the guide rail and an outer plate on a side separated from the guide rail. The inner plate is pivotally supported at its lower end so that the upper end can be tilted away from the bucket, and the outer plate is tilted toward the side away from the bucket. It is pivotally supported at its lower end so as to be able to rotate.

A fifth aspect of the present invention is the mobile scaffold device according to the third or fourth aspect , wherein the boom includes an extension portion extending inward of the building, and the moving direction of the traveling unit. The boom guide member is installed in the building and is engaged with the boom and the guide member at the intersection of the boom extension and the guide member. And the guide member which guides the boom which moves to the moving direction of a traveling unit in the extending | stretching direction of a guide member is installed.

According to the first aspect of the present invention, when the traveling unit is installed on the upper edge of the projecting portion of the building, the inner side roller contacting the building inner surface of the projecting portion is movable in the vertical direction. Is installed. The projecting part of the building where the traveling unit is installed has a wide variety of shapes, and when the height dimension of the inner surface of the projecting part is small, that is, from the bottom surface of the projecting part to the upper edge of the projecting part. The height may be low. If the height of the inner surface of the building is low, the lower end portion of the inner side roller may abut against the bottom surface of the inner side of the building and the traveling unit may not be stably installed on the protrusion. In this respect, according to the present invention, the inner side roller can be moved up and down, so that the inner side roller can be brought into contact with the inner surface of the building without hitting the bottom surface of the inner side of the building, etc. It can be installed on the protruding part of the building in a stable state.
Moreover, the outer side roller is attached to a swing arm that is swingably installed in the unit body. In the projecting portion of the building where the traveling unit is installed, the building outer surface connected to the upper edge of the projecting portion may be an inclined surface instead of a vertical surface. When the building outer surface, which is an inclined surface, is connected to the upper edge of the protruding portion, the outer side roller supported by the rotating shaft extending in the vertical direction may not be brought into contact with the outer surface. In this regard, according to the present invention, the outer side roller can be inclined by swinging the swing arm that supports the outer side roller, and the outer side roller is brought into contact with the outer surface of the building, which is an inclined surface. be able to. If the outer side roller can be brought into contact with the outer surface of the building, the traveling unit can travel in a stable state.

According to a third aspect of the present invention, the traveling unit includes a boom having a tip projecting outward from the building, and the boom is movable forward and backward along a boom extending direction and the wire. The guide rail is connected to the boom in a suspended state. When the boom is moved forward and backward, the pulley attached to the boom moves forward and backward to move the bucket and the guide rail. The hanging position is moved close to and away from the building. In the building where the travel unit is installed, the building outer surface of the protrusion and the building outer surface below the protrusion are not flush with each other, and the building outer surface below the protrusion is located on the outer side. is there. In this case, in the structure in which the guide rail is suspended from the traveling unit installed on the protrusion, the guide rail may not be suspended vertically along the building outer surface below the protrusion. In this regard, according to the present invention, by moving the boom forward and backward, the guide rail suspended by the boom can be moved forward and backward, so the outer surface below the protrusion is closer to the outer surface than the outer surface of the protrusion. Even in the case where it is located outside, the guide rail can be suspended vertically along the outer surface below the protrusion.
In addition, the boom includes a front end side pulley attached to the front end side from the connection position with the guide rail, and a rear end side pulley attached to the rear end side from the connection position. The bucket is used in a state of being hung on a pulley, and the bucket can be mounted on the guide rail so as to be movable up and down while being arranged on the building separation side of the guide rail. It can be attached to the guide rail so as to be able to move up and down in a state of being arranged on the building proximity side, and the bucket arranged on the building separation side is raised and lowered by the wire hung on the pulley on the tip side, and is arranged on the building proximity side. The bucket is moved up and down by a wire hung on the rear end side pulley. In the building where the traveling unit is installed, the building outer surface of the projection and the building outer surface below the projection are not flush with each other, and the building outer surface below the projection is located more inside. is there. In this case, if the guide rail is suspended vertically along the outer surface of the protrusion, the guide rail and the outer surface of the building are separated from each other at the lower position of the protrusion. It may not be possible to work on the surface. In this regard, according to the present invention, since the bucket can be arranged on the building proximity side of the guide rail, even if the outer surface below the protruding portion is located on the inner side than the protruding portion outer surface, the bucket By arranging at a position close to the building outer surface, the bucket can be arranged at a position close to the building outer surface below the protrusion, and the work can be easily performed on the building outer surface.

In the invention according to claim 4 , the bucket includes an inner plate on a side close to the guide rail and an outer plate on a side away from the guide rail, and the inner plate has an upper end portion thereof. It is pivotally supported at its lower end so that it can tilt to the side away from the bucket, and the outer plate rotates at its lower end so that its upper end can be tilted away from the bucket. It is supported freely. If there is a gap between the suspended bucket and the outside surface of the building, the gap between the bucket and the outside surface of the building will be displayed when an operator who has boarded the bucket is performing some work on the outside surface of the building. There is a possibility of dropping garbage. In this regard, according to the present invention, the inner plate and the outer plate of the bucket can be rotated, and by rotating, the upper end of the inner plate and the outer plate can be tilted away from the bucket. And by making it incline, an inner side board or an outer side board can be made to contact a building outer surface. The separation distance between the bucket and the building outer surface is often different each time the mobile scaffold device is installed, but according to the present invention, even if the separation distance fluctuates, the separation distance between the bucket and the building outer surface is close. By tilting the inner plate or the outer plate located at a position, it is possible to reliably prevent a gap from being generated between the bucket and the building outer surface. If the generation of a gap is prevented, even if an operator accidentally drops garbage, the fallen dust hits the tilted inner or outer plate and is collected in the bucket. Is reliably prevented from falling.

According to a fifth aspect of the present invention, the boom includes an extension portion extending inward of the building, extends in the moving direction of the traveling unit, and intersects the extension portion of the boom. In this state, the boom guide member is installed in the building, and the boom that is engaged with the boom and the guide member at the intersection between the extension portion of the boom and the guide member and moves in the moving direction of the traveling unit is installed. A guide member that guides in the extending direction of the guide member is provided. In a mobile scaffolding device that supports the guide rail and bucket by suspending and moving to the outside of the building, the boom can be moved to the outside of the building due to the weight of the guide rail and bucket that the boom suspends and supports. Limited distance to advance. In this regard, according to the present invention, the boom includes the extension portion, and the extension portion is engaged with the guide member, so that the boom can be supported in a stable state by the guide member. The boom can be extended farther outside the building. Further, since the guide member guides the movement of the boom that moves together with the traveling unit, the traveling unit can travel more smoothly together with the boom.

Claims (7)

A traveling unit installed on the upper edge of the protruding part of the building in a movable state along the extending direction of the upper edge;
A guide rail connected to the traveling unit and installed in a state extending downward from the traveling unit;
A boarding bucket attached to the guide rail so as to be movable up and down;
A winch installed in the traveling unit;
A wire having one end wound around a winch and the other end connected to a bucket;
A mobile scaffold device that raises and lowers a bucket by winding or unwinding a wire with a winch,
The traveling unit includes a plurality of upper edge traveling rollers that are in contact with the upper edge surface of the protrusion in a state of being rollable along the extending direction, and a building outer surface of the protrusion in the extending direction. An outer side roller that contacts in a state that allows rolling along the inner side roller, and an inner side roller that contacts in a state that allows rolling along the extending direction on the building inner surface of the protrusion,
The inner roller is a mobile scaffold device installed in a unit main body of the traveling unit in a state in which the inner roller can move up and down.   The mobile scaffold device according to claim 1, wherein the outer roller is installed in a unit main body of the traveling unit in a state in which the outer roller is movable up and down.   The mobile scaffold device according to claim 1, wherein the outer roller is attached to a swing arm that is swingably installed on the unit body. The traveling unit includes a boom having a tip protruding outward from the building,
The boom is movable forward and backward along the boom extending direction, and includes a pulley on which the wire is hung.
The guide rail is connected to the boom in a suspended state,
4. When the boom is moved forward and backward, the pulley attached to the boom moves forward and backward, and the hanging position of the bucket and guide rail moves close to and away from the building. The mobile scaffold device according to item. The boom includes a front end side pulley attached to the front end side from the connection position with the guide rail, and a rear end side pulley attached to the rear end side from the connection position,
The wire is used in a state of being hung on any pulley,
The bucket can be attached to the guide rail so that it can be raised and lowered while being arranged on the building separation side of the guide rail, and can also be attached to the guide rail so that it can be raised and lowered while being arranged on the building proximity side of the guide rail. And
5. The bucket arranged on the building separation side is raised and lowered by a wire hung on the front end side pulley, and the bucket arranged on the building proximity side is raised and lowered by a wire hung on the rear end side pulley. The mobile scaffold device described. The bucket includes an inner plate on a side close to the guide rail and an outer plate on a side away from the guide rail,
The inner plate is pivotally supported at its lower end so that the upper end can be tilted away from the bucket.
The mobile scaffold device according to claim 5, wherein the outer plate is pivotally supported at its lower end so that the upper end can be tilted to the side away from the bucket. The boom includes an extension extending inward of the building,
In a state extending in the moving direction of the traveling unit, and in a state intersecting with an extension part of the boom, a boom guide member is installed in the building,
A guide member that engages the boom and the guide member and guides the boom that moves in the moving direction of the traveling unit in the extending direction of the guide member is installed at the intersection of the extension portion of the boom and the guide member. The mobile scaffold device according to any one of claims 4 to 6.

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