JP2008214983A - Elevating/lowering portable scaffold - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevating/lowering portable scaffold which facilitates passage thereof through an opening having a door width, in an ordinary building, or loading thereof on an elevator, by folding work floors thereof, and allows two or more workers to ride on a work bench. <P>SOLUTION: The elevating/lowering portable scaffold is formed of a rectangular base frame which has wheels on a grounding surface, and is movable and fixable to a predetermined location, and horizontal frames and the work floors that are elevated/lowered in a plurality of stages. Each work floor is formed of a horizontal main body and a single or a plurality of widened portions arranged on lateral sides of the main body. The widened portion is connected to the main body in a manner turnable only upward, and protectors are set on a lower surface of a proximal portion of the widened portion. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lifting and lowering type moving scaffold used for interior and exterior construction and the like, wherein the work floor area is variable.

  The vertical moving scaffold can be expanded and contracted in the vertical direction, so it can be stored and transported at a low height, moved horizontally to a predetermined location, fixed at that location, and then lifted to a predetermined height. By extending the type moving scaffold and fixing its height, work such as interior and exterior construction can be performed at a predetermined height at a predetermined location.

  Such horizontal movement and fixing of the liftable moving scaffold is often performed by providing a wheel with a brake lock on the ground contact surface of the liftable moving scaffold and further fixing it with an outrigger. The vertical expansion and contraction is performed by directly moving the work floor up and down, or by installing the work floor on a foldable arm and extending and fixing the arm.

  After such an elevating type moving scaffold is extended at a predetermined place, an operator works at a high place. Therefore, a handrail is required on the work floor in order to prevent the worker from falling from a high place. The handrail on the work floor may be attached in advance to the liftable moving scaffold before moving to a predetermined location, or may be attached after moving to a predetermined location. In this case, the handrail is attached in a state in which the lifting and lowering moving scaffold is contracted in the vertical direction, that is, after the handrail is safely attached with the work floor in a low place, the lifting and lowering moving scaffold is extended in the vertical direction. Therefore, the worker can work safely at a high place.

  In addition, since such a lifting and lowering type moving scaffold can be expanded and contracted in the vertical direction, when storing the lifting and lowering type moving scaffold, the storage space in the height direction can be saved by reducing its height. Can do. It has been proposed not only to lower the height by allowing the lifting / lowering moving scaffold to move up and down, but also to save the storage space in the width direction by allowing the work floor of the lifting / lowering moving scaffold to be foldable.

  In Patent Document 1, a plurality of horizontal frames (frame bodies) are sequentially stacked via an X-shaped slider crank on a rectangular base frame (frame body) having wheels on the ground contact surface, and the uppermost stage. An elevating type moving scaffold is disclosed in which a work floor is installed on the horizontal frame of the above and a ladder for raising and lowering the work floor to the work floor is further provided. The X-shaped slider crank can be folded and extended, and by manually extending and retracting the X-shaped slider crank, the work floor can be raised and lowered, and its height can be fixed in stages. Is possible.

  1 and 2 show an example of a liftable moving scaffold that has been put into practical use based on the technique disclosed in Patent Document 1. FIG. (a) is a front view, (b) is a side view. FIG. 1 shows a state in which the horizontal frame is extended in the vertical direction with the lifting-type moving scaffold fixed at a predetermined position, and FIG. 2 shows the state in which the horizontal frame is folded in the vertical direction while also being fixed in the predetermined position. The state of time is shown.

  This elevating type moving scaffold includes a rectangular base frame 5 that has wheels on a ground contact surface and can be moved and fixed to a predetermined place, a plurality of steps of a vertically movable horizontal frame 40, and a work floor 60.

  Support columns 7 are erected at four corners of a rectangular base frame (frame body) 5, and wheels 6 with brake locks are attached to the lower ends thereof. Further, an outrigger 76 having a jack base 75 at the tip is attached to the side surface of each column 7 and is installed so as to be able to rotate in the horizontal direction around each column 7. The liftable moving scaffold is moved by releasing the brake lock of the wheel and pushing the liftable moving scaffold horizontally while keeping the jack base 75 lifted. Then, after moving to a predetermined location, the brake lock of the wheel is applied and the jack base 75 is grounded to be fixed at the predetermined location.

  Between the rectangular base frame 5 and the work floor 60, a plurality of stages of a rectangular horizontal frame 40 that can be raised and lowered are provided, and two diagonal members are crossed between the horizontal frames 40 adjacent to each other in the vertical direction. Two rows of X-shaped slider cranks 50 that are axially attached are vertically arranged.

  A work floor 60 is installed on the uppermost horizontal frame 40. Handrail pillars 62 are installed at the four corners of the work floor 60, handrail bars 63 are attached between the adjacent handrail pillars 62, and baseboards 64 are attached to the four sides of the work floor 60. The assembly of the workbench is completed. The work table may be assembled before moving or after moving.

  The raising / lowering of the elevating type moving scaffold is made by sliding two diagonal members of an X-shaped slider crank 50 provided between the horizontal frames 40 adjacent to each other in the horizontal direction. That is, when the X-shaped slider crank extends upward, the upper horizontal frame rises. Conversely, when the X-shaped slider crank contracts downward, the upper horizontal frame descends. .

  When raising and lowering the lifting type moving scaffold, after extending the X-shaped slider crank in the upward direction, the raising and lowering ladder composed of the long member 70 and the cross member 71 is formed on both side surfaces of the horizontal frame 40 adjacent to the upper and lower sides. And the height of the upper horizontal frame 40 is fixed by supporting the upper horizontal frame 40 with this elevating ladder. This operation is repeated at each stage of the slider crank until the work floor 60 rises to a predetermined height. Conversely, when lowering the lifting type moving scaffold, the lifting ladder composed of the long member 70 and the cross member 71 is removed first, and then the X-shaped slider crank of the step is contracted downward, The height of the horizontal frame 40 is lowered, and the height is fixed by the fasteners 52. This operation is repeated in each stage of the slider crank until the work floor 60 is lowered to a predetermined height.

  Taking the lowermost X-shaped slider crank 50 as an example, the structure of the X-shaped slider crank will be described in detail. The intersection of the two diagonal members is pivotally attached by a pin 51 and the two diagonal members are The left ends are pivotally attached to the long sides of the upper and lower horizontal frames 40, respectively. Therefore, the right ends of the two diagonal members can be moved and fixed in the horizontal direction along the long sides of the lower and upper horizontal frames 40, respectively, and after the slider crank is extended upward, the elevator ladder The horizontal frame can be fixed at a predetermined height by supporting the upper and lower horizontal frames 40 with the long material 70. In addition, after the slider crank is contracted downward, the upper horizontal frame 40 can be fixed at the height by rotating the fastener 52 upward and fixing it inward.

  In this way, the worker moves the lifting / moving scaffold to a predetermined position, fixes the lifting / moving scaffold at that position, and then performs the extension work of the X-shaped slider crank 50 at each stage. Then, after the work floor 60 is raised and fixed to a predetermined height, the elevating ladder is climbed to the work floor to perform work such as interior and exterior work.

  Patent Documents 2 to 4 propose that the storage floor in the width direction can be saved at the time of storage by enabling the work floor of the liftable moving scaffold to be folded.

  That is, Patent Document 2 discloses an elevating type moving scaffold in which a work floor is composed of one main body portion and two widened portions that can be rotated 90 ° downward. In this case, at the time of storage, each of the two widened portions can be rotated 90 degrees downward, so that the lifting and lowering movable scaffolding can be shortened and stored. During the work, the two widened portions are rotated 90 ° to the horizontal state, and these widened portions are stretched by the stay to fix the two widened portions to the horizontal state. It can be used as a work floor composed of a part and two widened parts.

  Next, Patent Document 3 similarly discloses an elevating type moving scaffold comprising a work floor composed of one main body portion and two widened portions that can be rotated 90 ° downward. This lifting and lowering movable scaffold can be extended and retracted by rotating the two widened portions 90 ° to the horizontal state during work, and then adjusting the length as a support material for these widened portions and having wheels on the ground contact surface The two widened portions are fixed in a horizontal state by installing a leg at a lower portion of the widened portion and fixing between the telescopic leg and a central leg supporting the main body portion with an oblique material.

  Patent Document 4 discloses an elevating type moving scaffold in which a work floor is composed of one main body portion and two widened portions that can be rotated upward by about 110 °. In this case, by rotating the two widened portions upward by about 110 ° during storage, the width of the liftable moving scaffold can be shortened and stored. During the work, after the two widened portions are rotated by about 110 ° to the horizontal state, the lengths of the widened portions previously attached to the lower portions of the widened portions are adjustable as support materials for these widened portions. A telescopic leg provided with wheels on the grounding surface is installed, and the two widened parts are fixed in a horizontal state by fixing between the telescopic leg and the central leg supporting the main body part with a link material. .

Japanese Utility Model Publication No. 6-36167 Registered Utility Model No. 3033420 Japanese Utility Model Publication No. 7-10223 Japanese Utility Model Publication No. 9-137599

  The lifting and lowering type moving scaffold disclosed in Patent Document 1 is limited in weight and size so that it can be used and moved in a general building. In particular, the width of the lifting and lowering moving scaffold depends on the size of the work floor, but due to restrictions due to the width of the door (about 0.9 m) in general buildings and the size that can be loaded in an elevator, The floor area is naturally limited. In general, the size of the work floor is often 1.5 m × 0.52 m.

On the other hand, the maximum load load L (kgf) of the work table in high-altitude work is based on the accreditation standard of the Temporary Industrial Association, and if the area of the work floor is A (m ² ), the maximum load load L (kgf) is It is determined by the following equation (1).

L = 75 × (A + 1) (1) where L is the maximum load capacity (kgf) of the work table, and A is the work floor area (m ² ), respectively. ,means.

  Therefore, when the formula (1) is applied to a lifting / moving scaffold having a work floor size of 1.5 m × 0.52 m, the maximum load L of the work table is 133 kgf. Therefore, the number of people who can work on the work table is limited to boarding one person, considering the weight of tools and the like.

  However, some work at high places is difficult for one worker, such as piping work behind the ceiling.

  As described above, the conventional lifting scaffold has a problem that only one worker can board the vehicle due to the size of the work floor.

  The present invention is for solving such a problem, and by allowing the work floor of the lifting and lowering scaffold to be folded, it is possible to pass through the width of the door in a general building and to load the elevator. Another object of the present invention is to provide an elevating mobile scaffold that allows two or more workers to board the workbench.

  In addition, although the raising / lowering scaffolding which folds the work floor of a raising / lowering scaffold is proposed in patent documents 2-4, it is for saving the storage space at the time of storage of a raising / lowering scaffold, It is not considered at all that it is possible to pass through the width of a door in a building or to be loaded on an elevator, and it is not possible to use a liftable scaffold having these folding work floors as it is.

  That is, in all of the elevating type moving scaffolds disclosed in Patent Documents 2 to 4, when the widened portion is folded, the entire widened portion of the work floor or the telescopic legs that support the widened portion is the width of the main body portion. Since it protrudes outside, it is difficult to pass through the width of a door in a general building or load it on an elevator. In addition, since the apparatus configuration is complicated, the operability is poor, and the anxiety remains in the fixing method of the widened portion, so that there is a problem of safety.

  The inventors of the present invention develop a lifting and lowering movable scaffolding that can pass through the width of a door in a general building, can be loaded on an elevator, and can carry two or more workers on a work table. Therefore, various studies were repeated. As a result, the following findings (a) to (j) were obtained.

(a) To make it possible to pass through the width of doors in general buildings and load them in elevators,
The work floor of the liftable moving scaffold may be divided into a main body part and a widened part so that the widened part can be folded to the main body part side. Here, the main body portion of the work floor is fixed horizontally and installed, and one or a plurality of widening portions may be provided on the side of the main body portion, and the main body portion and the widening portion may be rotatably connected. For example, the widened portion can be rotated with respect to the main body by connecting via a hinge structure. Outriggers 76 having jack bases at the tips are attached to the sides of the four corners of the rectangular base frame (frame body) of the lifting and lowering movable scaffolding. Because it can rotate, the jack base at the tip does not protrude when passing through the door width in general buildings or loading it into an elevator, so it does not get in the way.

  (b) In order to allow two or more workers to board the work platform of the lifting and lowering mobile scaffolding, the work floor must be closed after passing through the width of the door in a general building or loading the elevator. It is sufficient to rotate the widened portion to the outside and develop it on the work floor composed of the main body portion and the widened portion to increase the area A of the work floor. If the area A of the work floor is increased, the maximum loading load L of the work table can be increased, so that the number of workers can be increased accordingly.

  (c) Patent Document 2 discloses an elevating moving scaffold comprising a work floor composed of one main body part and two widened parts that can be rotated 90 ° downward. After the two widened parts are rotated 90 ° to the horizontal state, these widened parts need to be stretched by the stays, which complicates the device configuration, and the operability is poor and the stays are not sufficiently stretched by the stays. In this case, the safety problem remains.

  (d) Patent Document 3 discloses an elevating moving scaffold comprising a work floor composed of one main body part and two widened parts that can be rotated 90 ° downward. After the two widened parts are rotated 90 ° to the horizontal state, the length can be adjusted and the widened parts are supported by the extendable legs having wheels on the grounding surface, and the extendable legs and the main body are supported. It is necessary to fix it with diagonal material between the central leg and the device structure becomes complicated, the operability is poor, and in addition, there is a safety problem when fixing with the extendable leg and diagonal material is insufficient. Remain.

  (e) Patent Document 4 discloses an elevating moving scaffold comprising a work floor composed of one main body part and two widened parts that can be rotated upward by about 110 °. The two widened portions are rotated by about 110 ° to the horizontal state, and then the widened portions are attached to the lower portion of the widened portion in advance and adjustable in length and provided with wheels on the grounding surface. In addition to the fact that it is necessary to fix between the telescopic leg and the central leg supporting the main body with a link material, the device configuration becomes complicated, the operability is poor, and the telescopic leg and the link material The problem of safety remains when the fixation is insufficient.

  (f) From the scene where both the main body and widening part of the work floor of the lifting type mobile scaffold are deployed in a horizontal state, the rotation direction when folding the wide part of the work floor to the main body side is The upper part can be considered, but when it is rotated downward, the widening part collides with the member that supports the main body part of the work floor from below, so it is necessary to secure a space for storing the widening part. Have difficulty. Although it is possible to secure a space for storing the widened portion, it is unavoidable if the apparatus configuration is complicated. On the other hand, when it is turned upward, the widened portion can be positioned in the upper space of the main body portion of the work floor. Therefore, it is easy to secure a space for storing the widened portion, and the device configuration is also improved. Simple things are enough. Therefore, the widened portion is preferably connected so as to rotate upward with respect to the main body portion.

  (g) From the scene in which the widened part of the work floor of the liftable moving scaffold is located in the upper space of the main body part, rotate the widened part upward so that the main body part and the widened part are both horizontal. When the widened portion is expanded, it is preferable that the rotation of the widened portion is stopped when the widened portion is in the same horizontal plane as the main body portion. For this purpose, it is only necessary to install a pad on the lower part of the base of the widened portion. Then, when the widened portion becomes the same horizontal plane as the main body portion, the pad installed at the lower part of the base portion of the widened portion may be made to hit the side surface or the bottom surface of the member constituting the main body portion of the work floor. By installing the abutting member in this way, it becomes possible to fix the widened portion when it is deployed, so that a stay, a diagonal member and a link member are not necessary, and safety is high. In addition, the folding workability is excellent.

  (h) Instead of installing the batting material at the lower part of the base of the widened portion of the work floor, the batting material may be installed on the side surface of the member constituting the main body of the work floor. In this case, when the widened portion becomes the same horizontal plane as the main body portion, the contact material installed on the side surface of the member constituting the main body portion of the work floor may hit the side surface or the bottom surface of the widened portion. Also in this case, it is possible to fix the widened portion when the widened portion is deployed simply by installing the abutting material. Therefore, the diagonal material and the link material are not necessary, and the safety is high. In addition, the folding workability is excellent.

  (i) When the widened part of the work floor is folded to the main body part side, it is preferable that even a part of the widened part does not protrude beyond the width of the main body part. That is, when the widened portion of the work floor is folded to the main body portion side, the entire widened portion is preferably stored on the main body portion. The widened portion of the work floor preferably does not have a leg that supports it.

  (j) The widened portion of the work floor is preferably in the same horizontal plane as the main body when the widened portion is deployed, and is preferably stably placed on the main body when the widened portion is folded. Therefore, it is preferable that the angle at which the widened portion can be rotated is 180 ° at the maximum.

  The lifting and lowering type mobile scaffold capable of mounting two or more workers on the work table according to the present invention has been completed based on these findings, and the present invention includes the following (1) to (6) The gist of the lift-type moving scaffold.

  (1) A lifting platform that is equipped with wheels on the ground surface and that can be moved and fixed in place, a horizontal frame that can be moved up and down, and a working floor. The main body part and one or a plurality of widened parts provided on the side of the main body part, the widened part being pivotably connected only upward with respect to the main body part, and the padding material of the widened part An elevating mobile scaffold characterized by being installed at the bottom of the base.

  (2) When the widened portion of the work floor is rotated outward and deployed on the work floor composed of the main body portion and the widened portion, the contact material provided at the lower part of the base portion of the widened portion is the side surface of the main body portion of the work floor. Alternatively, the lifting and lowering movable scaffold according to (1), wherein the rotation of the widened portion is stopped when the widened portion of the work floor becomes the same horizontal plane as the main body by hitting the bottom surface.

  (3) A lifting platform that is equipped with wheels on the ground surface and that can be moved and fixed in place, a horizontal frame that can be moved up and down, and a work floor. The main body part and one or a plurality of widened parts provided on the sides of the main body part are connected to the main body part so as to be rotatable only upward, and the padding material is provided on the work floor. An elevating mobile scaffold characterized by being installed on the side of the main body.

  (4) When the widening part of the work floor is rotated outward and deployed on the work floor composed of the main body part and the widening part, the padding material installed on the side of the main part of the work floor is The lifting and lowering movable scaffold according to (3) above, wherein the rotation of the widened portion is stopped when the widened portion of the work floor becomes the same horizontal plane as the main body by hitting the side or bottom surface.

  (5) When the widened portion of the work floor is turned inward and folded to the main body side, the entire widened portion is accommodated on the main body portion, the above (1) to ( 4) Lifting / moving scaffolding.

  (6) The lifting and lowering movable scaffold according to (5) above, wherein a maximum angle of rotation of the widened portion of the work floor is 180 °.

  The lifting / moving scaffold according to the present invention enables the passage of the door width in a general building and the loading on the elevator by folding the work floor of the lifting / lowering scaffold, so that two or more workers on the work table Can be boarded.

  Hereinafter, the lifting type moving scaffold according to the present invention will be described with reference to the drawings.

  3 and 4 show an example of the lifting type moving scaffold according to the present invention, in which the widened portion of the work floor is rotated outward to expand the widened portion of the work floor, and the widened portion is the same horizontal plane as the main body portion. It shows the state. (a) is a front view, (b) is a side view. FIG. 3 shows a state when the horizontal frame interval is widened and expanded in the vertical direction, and FIG. 4 shows a state when the horizontal frame interval is narrowed and folded in the vertical direction.

  This elevating type moving scaffold is composed of a rectangular base frame 5 having wheels on the ground contact surface and movable and fixed to a predetermined place, a plurality of elevating horizontal frames 40 and a work floor 60. The floor 60 is composed of one main body portion 65 and two widened portions 66.

  Support columns 7 are erected at four corners of a rectangular base frame (frame body) 5, and wheels 6 with brake locks are attached to the lower ends thereof. Further, an outrigger 76 having a jack base 75 at the tip is attached to the side surface of each column 7 and is installed so as to be able to rotate in the horizontal direction around each column 7. The liftable moving scaffold is moved by releasing the brake lock of the wheel and pushing the liftable moving scaffold horizontally while keeping the jack base 75 lifted. And after moving to a predetermined place, while locking a brake of a wheel, it can fix in a predetermined place by grounding the jack base 75.

  A plurality of rectangular horizontal frames 40 that can be moved up and down are provided between the rectangular base frame 5 and the work floor 60, and two diagonal members are crossed between the horizontal frames 40 that are adjacent vertically. Two rows of X-shaped slider cranks 50 which are axially attached are provided in a vertical direction.

  The raising / lowering of the elevating type moving scaffold is made by sliding two diagonal members of an X-shaped slider crank 50 provided between the horizontal frames 40 adjacent to each other in the horizontal direction. That is, when the X-shaped slider crank extends upward, the upper horizontal frame rises. Conversely, when the X-shaped slider crank contracts downward, the upper horizontal frame descends. .

  In order to raise the lifting and lowering type moving scaffold, after extending the X-shaped slider crank upward, on both sides of the horizontal frame 40, lifting ladders composed of a long member 70 and a cross member 71 are attached, The height of the horizontal frame is fixed by supporting the horizontal frame with this elevating ladder. Conversely, when lowering the lifting type moving scaffold, the lifting ladder composed of the long member 70 and the cross member 71 is first removed, and then the X-shaped slider crank is contracted downward. After that, the upper horizontal frame 40 can be fixed at the height by rotating the fastener 52 upward and fixing it to the inside.

  As described above, the lifting type moving scaffold according to the present invention includes a rectangular base frame that has wheels on the grounding surface and can be moved and fixed to a predetermined place, a plurality of steps of a vertically movable horizontal frame, and a work floor. 1 and 2, the work floor 60 installed on the uppermost horizontal frame 40 includes one horizontal main body 65 and each of the main body 65. The wide structure 66 includes two widened portions 66 provided on the side of the main body 65, and a hinge structure 67 is provided between the main body 65 and the widened portion 66. Thus, the point that the pivot member 68 is pivotably connected only upward with respect to the main body 65 is different from the point that the contact member 68 is installed at the lower part of the base of the widened portion 66.

  In the liftable moving scaffold according to the present invention, handrail pillars 62 are provided at the four corners of the work floor 60 installed on the uppermost horizontal frame 40, and the handrail pillars 62 are provided. A handrail bar 63 is attached between the four sides of the work floor, and baseboards 64 are attached to the four sides of the work floor. The assembly of the work table is the same, and the work table is assembled before moving. It may be performed after moving.

  The worker moves the lifting / lowering moving scaffold to a predetermined location, fixes the lifting / lowering moving scaffold at that position, and then extends the X-shaped slider crank 50 at each stage, thereby moving the work floor 60 to the working floor 60. After raising and fixing to a predetermined height, the climbing ladder is climbed to the work floor to perform work such as interior and exterior construction.

  In the middle of the movement of this lifting and lowering type moving scaffold, it may be necessary to pass through the width of a door in a general building or to be loaded on an elevator. In this case, it is installed on the uppermost horizontal frame 40. The width of the work floor 60 can be reduced by rotating one or two of the widened portions 66 of the work floor 60 and folding the work floor 60 on the inner horizontal main body 65. It is possible to pass through doors in general buildings and load them in elevators.

  FIG. 5 shows a state in which the horizontal frame is fixed at the height by folding the elevating type moving scaffold in the vertical direction and fixing the fasteners, and the state when the widened portion of the work floor is folded inward. Show. (a) is a front view, (b) is a side view, and (c) is a plan view. In addition, the handrail pillar, the handrail bar, and the baseboard are removed among the members constituting the work table.

  FIG. 6 is an enlarged view of the vicinity of the work floor as viewed in the direction of arrows AA in FIG. Here, the widened portion display by the solid line indicates a state when the widened portion of the work floor is folded inward, and the broken line display indicates a state when the widened portion of the work floor is expanded outward. That is, in this example, the rotation angle of the widened portion is 180 °, and when the widened portion is folded inward, the entire widened portion is stored on the main body.

  Of the work floor 60 installed on the uppermost horizontal frame 40, two widened portions 66 provided on the respective sides of the main body 65 are connected to the main body 65 via the hinge structure 67. It is connected so as to be rotatable only upward. Since these two widened portions 66 can be folded inward and placed on the horizontal main body 65, the width of the work floor 60 is reduced by the width of the two widened portions. Can do.

  An outrigger 76 having a jack base 75 at the tip is attached to the side surface of the support column 7 erected at the four corners of the rectangular base frame 5. Therefore, the outrigger 76 having the jack base 75 can be moved to the front and back of the movable scaffolding, so that it can be moved to the inside of the width of the main body 65 of the work floor. it can.

  By performing the above operation, it becomes possible to narrow the entire width of the mobile scaffold, so that it is possible to pass through the width of the door in an ordinary building or to load the elevator.

  Next, by narrowing the overall width of the mobile scaffold in this way, the mobile scaffold that finished passing through the width of the door in the general building and loading on the elevator moved to a predetermined place, A brake is applied to the wheel 6 with the brake lock, and the outrigger 76 having the jack base 75 is rotated to the outside of the width of the main body 65 of the work floor and moved to the left and right of the mobile scaffold to fix the mobile scaffold. .

  After that, the widened portion 66 folded on the inner horizontal main body portion 65 of the work floor 60 installed on the uppermost horizontal frame 40 of the mobile scaffold is connected via the hinge structure 67. It is rotated upward and outward to be developed on a work floor composed of a main body portion and a widened portion. At this time, the contact member 68 provided at the lower part of the base portion of the widening portion hits the side surface or the bottom surface of the main body portion of the work floor, so that when the widening portion of the work floor becomes the same horizontal plane as the main body portion, Since the rotation is stopped, workability is good.

  FIG. 7 is one aspect of the lifting type moving scaffold according to the present invention, and shows a state when the widened portion of the work floor is expanded outward and the widened portion of the work floor becomes the same horizontal plane as the main body. . (a) is a front view, (b) is a side view, and (c) is a plan view. Of the members constituting the workbench, the handrail pillar, handrail bar, and baseboard are not yet attached.

  FIG. 8 is an enlarged view of the vicinity of the work floor as viewed in the direction of arrows AA in FIG. Here, the widened portion display by the solid line indicates a state when the widened portion of the work floor is expanded outward, and the broken line display indicates a state when the widened portion of the work floor is folded inward. The work floor 60 installed on the uppermost horizontal frame 40 is composed of a main body portion 65 and two widened portions 66. Since both are on the same horizontal plane, a flat work floor 60 is formed together. ing. In addition, the contact member 68 provided at the lower part of the base of the widened portion hits the side surface of the main body portion of the work floor, so that the rotation of the widened portion is reliably stopped and fixed to the main body portion by the weight of the widened portion. Is done.

  Thus, after the work floor 60 comprising the main body 65 and the widened portion is developed on the same horizontal plane, handrail pillars are installed at the four corners, and a handrail bar is provided between the handrail pillars. A baseboard is attached to the four sides of the work floor, and the assembly of the work table is completed.

  Next, the worker lifts and fixes the work floor to a predetermined height by extending the X-shaped slider crank at each stage, and then climbs the lifting ladder to the work floor for interior and exterior construction. And so on. At this time, since the handrail pillar, the handrail bar, and the baseboard are already attached to the work floor to form the work table, the possibility of falling from the work floor is small. In addition, since the work floor 60 has a larger area by the width of the widened portion 66, two or more workers can board the work table at the same time.

  In this example, two widened parts of the work floor are used for one main body part. However, the difference between the area of the main body part and the work floor area calculated from the number of persons who require simultaneous boarding of workers. Depending on the case, one or three or more widened portions may be used.

  Also, here, the contact member provided at the lower part of the base of the widened portion hits the side surface of the main body portion of the work floor to stop the rotation of the widened portion, but as shown in FIG. Instead of the side surface of the main body portion of the floor, it may be designed to hit the bottom surface of the main body portion.

  Another example of the lifting type moving scaffold according to the present invention will be described.

  This elevating type moving scaffold is not only composed of a rectangular base frame that has wheels on the ground surface and can be moved and fixed in place, a horizontal frame that can be moved up and down, and a work floor, but also at the top. The work floor 60 installed on the horizontal frame 40 is composed of one horizontal main body 65 and two widened portions 66 provided on the sides of the main body 65, and A hinge structure 67 is provided between the main body 65 and the widened portion 66, and the widened portion 66 is connected to the main body 65 via the hinge structure 67 so as to be rotatable only upward. The point is also the same as the lifting type moving scaffold shown in the first embodiment.

  The difference from the lifting and lowering type moving scaffold shown in the first embodiment is that the contact material 68 is installed not on the lower part of the base of the widened portion 66 of the work floor but on the side surface of the main body as shown in FIG. .

  Similarly to the lifting / lowering moving scaffolding according to the first embodiment, the lifting / lowering moving scaffolding according to the second embodiment can reduce the overall width of the moving scaffolding, so that the width of the door in the general building can be reduced. Can be passed through and loaded into an elevator. In addition, since the work floor has a larger area by the width of the widened portion, two or more workers can board the work table at the same time. Similarly to the first embodiment, one or two or more widened portions of the work floor may be used for one main body portion.

  Here, the contact member 68 provided on the side surface of the main body portion of the work floor stops the rotation of the widened portion by hitting the lower portion of the base portion of the widened portion, but as shown in FIG. A projecting portion may be provided on the side surface of the main body portion of the work floor, and the contact material 68 provided on the upper portion of the projecting portion may be designed to hit the bottom surface of the widened portion.

  As shown in FIG. 11, when a protrusion is provided on the side surface of the main body of the work floor and the contact member 68 is provided on the upper portion of the protrusion, when the widened portion of the work floor is folded inward, The pad 68 shown in FIG. 11 can be used depending on the width of the door in the general building or the width of the door of the elevator.

  Note that the pad 68 shown in FIG. 10 or Example 1 is preferable because there is no portion protruding from the width of the main body portion of the work floor when the widened portion of the work floor is folded inward.

  According to the present invention, by folding the working floor of the lifting and lowering scaffolding, it is possible to pass through the door width in a general building and to load on an elevator, and it is possible to board two or more workers on the work table. An elevating mobile scaffold can be provided.

It is an example of the raising / lowering type moving scaffold utilized practically based on the technique disclosed by patent document 1, and shows the state extended | stretched to the orthogonal | vertical direction. (a) is a front view, (b) is a side view. It is an example of the raising / lowering type moving scaffold utilized practically based on the technique disclosed by patent document 1, and shows the state folded in the perpendicular direction. (a) is a front view, (b) is a side view. It is an example of a lifting and lowering type moving scaffold according to the present invention, when it is extended in the vertical direction, the widened portion of the work floor is rotated outward to expand the widened portion of the work floor, and the widened portion and the main body portion The state which becomes the same horizontal surface is shown. (a) is a front view, (b) is a side view. It is an example of a lifting type moving scaffold according to the present invention, when it is folded in the vertical direction, the widened portion of the work floor is rotated outward to expand the widened portion of the work floor, and the widened portion and the main body portion The state which becomes the same horizontal surface is shown. (a) is a front view, (b) is a side view. A state in which the liftable moving scaffold is folded in the vertical direction and the widened portion of the work floor is folded inward is shown. (a) is a front view, (b) is a side view, and (c) is a plan view. It is an enlarged view of the work floor vicinity of the AA arrow of FIG.5 (c). It is one aspect | mode of the raising / lowering type moving scaffold which concerns on this invention, and shows the state which expand | deployed the wide part of the work floor on the outer side. (a) is a front view, (b) is a side view, and (c) is a plan view. It is an enlarged view of the work floor vicinity of the AA arrow of FIG.7 (c). The state in which the contact material 68 provided at the lower part of the base part of the widened part of the work floor hits the bottom surface of the main body part is shown. A state in which the contact member 68 installed on the side surface of the main body portion of the work floor hits the lower portion of the base portion of the widened portion 66 is shown. A protrusion is provided on the side surface of the main body portion of the work floor, and a state in which the contact material 68 provided on the upper portion of the protrusion hits the bottom surface of the widened portion is shown.

Explanation of symbols

5 Base frame 6 Wheel with brake lock 7 Post 20 Vertical circular pipe member 40 Horizontal frame 50 X-shaped slider crank 51 Pin 52 Fastening 60 Work floor 62 Handrail pillar 63 Handrail bar 64 Baseboard 65 Work floor main body Part 66 Widening part of work floor 67 Hinge structure 68 Batting material 70 Ladder long material 71 Ladder horizontal material 75 Jack base 76 Outrigger

Claims (6)

  A vertical base frame that has wheels on the ground surface and can be moved and fixed to a predetermined place, a movable frame that can be moved up and down, and a movable frame that is movable up and down. And one or a plurality of widened portions provided on the side of the main body, and the widened portion is pivotably connected only upward with respect to the main body, and the pad is a lower part of the base of the widened portion Lifting type moving scaffold characterized by being installed in.   When the widened portion of the work floor is rotated outward and deployed on the work floor composed of the main body portion and the widened portion, the contact material provided at the lower portion of the base portion of the widened portion corresponds to the side surface or the bottom surface of the main body portion of the work floor. Accordingly, when the widened portion of the work floor becomes the same horizontal plane as the main body portion, the rotation of the widened portion is stopped.   A vertical base frame that has wheels on the ground surface and can be moved and fixed to a predetermined place, a movable frame that can be moved up and down, and a movable frame that is movable up and down. And one or a plurality of widened portions provided on the side of the main body, and the widened portion is connected to the main body so as to be pivotable upward only, and the padding material is connected to the main body of the work floor. An elevating mobile scaffold characterized by being installed on the side.   When the widening portion of the work floor is rotated outward and deployed on the work floor composed of the main body portion and the widening portion, the pad installed on the side surface of the main body portion of the work floor is the side surface or bottom surface of the widening portion of the work floor. 4. The lifting and lowering movable scaffold according to claim 3, wherein the rotation of the widened portion is stopped when the widened portion of the work floor becomes the same horizontal plane as the main body by hitting.   The whole widened part is stored on the main part when the widened part of the work floor is turned inward and folded to the main part. Lifting type moving scaffold as described in.   The liftable moving scaffold according to claim 5, wherein a maximum angle of rotation of the widened portion of the work floor is 180 °.

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