JP2010281159A - Ascending/descending movable projecting scaffold - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ascending/descending movable projecting scaffold capable of being smoothly moved to a predetermined work place and being fixed there, by which the height of a work platform provided with a projecting part and the height of the projecting part can be efficiently changed over a wide area, so that the work at a high place can be performed efficiently and safely on the outer periphery of an exterior wall or a building. <P>SOLUTION: The ascending/descending movable projecting scaffold includes a rectangular base frame which has wheels on a ground contact surface thereof and can be moved to the predetermined place and fixed there, a plurality of tiers of elevatable horizontal frames, the work platform, and the projecting part having a floor surface which is flush with that of the work platform. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is an overhanging scaffold used for building construction work, interior and exterior construction, repair work, etc., and raising and lowering the workability and safety by making the overhanging scaffold movable up and down. Related to mobile overhanging scaffolding.

  When working at a high place on the outer wall or the outer periphery of the building at the building construction site or repair site, etc., place a framework scaffold with a scaffolding board over the upper overhang part along the outer wall or the outer periphery of the building, A method is adopted in which an operator works on an overhanging scaffold plate of a framework scaffold (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 3-126958

  When assembling a framework scaffold that spans such an overhanging scaffolding board, the overhanging scaffolding board is fixedly placed on the outside of the outer wall or the outer periphery of the building, and an operator is placed on the fixedly placed overhanging scaffolding board. Since the work of attaching the handrail is carried out in the state of being placed, there is a case where the worker gets out of the framework scaffold and works, and there is a problem that the work is difficult and dangerous.

  Furthermore, in the overhanging scaffold in which the overhanging scaffolding plate is fixedly arranged on the outer wall or the outer periphery of the building as described above, the range in which an operator can work easily and safely is extremely narrow. Therefore, when it was attempted to work in a place that deviated in the horizontal direction from the working range of the overhanging scaffold once the overhanging scaffolding was fixedly arranged, it took time and effort to reposition the overhanging scaffolding in another place. Also, since this overhanging scaffolding is also fixed in height, it is the same place when trying to work in a place that deviates vertically from the working range of the overhanging scaffolding once the overhanging scaffolding plate is fixedly arranged. Nevertheless, it took time and effort to reposition the overhanging scaffolding board to change the height of the overhanging scaffolding board.

  In view of such a situation, the present invention can be smoothly moved to a predetermined place where the work should be performed and fixed there, and the work table is provided with a projecting portion and the height of the work table and the projecting portion is wide. It is an object of the present invention to provide an overhanging scaffold that can be changed easily, so that work at a high place can be performed efficiently and safely on the outer wall or the outer periphery of the building.

  The inventors of the present invention provide an overhanging scaffold that can be moved and fixed smoothly to a place where work is to be performed, and that has an overhanging portion on the workbench and can change the height of the workbench and the overhanging portion in a wide range. Various studies were repeated for development. As a result, the following findings (a) to (g) were obtained.

  (a) In order to make it possible to easily move the overhanging scaffold to a predetermined place, a work table is installed on a rectangular base frame (frame body) having wheels on the grounding surface. The overhanging scaffold may be formed by connecting the overhanging portions. In order to fix the overhanging scaffold at a predetermined place, for example, a wheel with a brake lock may be provided on the ground surface and further fixed with an outrigger.

  Then, for example, a rectangular shape is adopted as the planar shape of the work table, and then, the overhang scaffold is appropriately connected to the short side or the long side of the rectangular work table so that the overhang portions are flush with each other. May be formed.

  The overhanging part connected to the workbench may be formed separately from the workbench and connected to the workbench after moving to a predetermined place, but the overhanging part is connected so that it can be folded to the workbench side. May be. For example, the overhanging portion may be pivotably connected via a hinge structure. The rotating direction may be either upward or downward, but it is more preferable to rotate upward because the overhanging portion can be stored on the work table.

  The ceiling inside the building is often formed with beams made of concrete or H-shaped steel, and when working at a high place close to the ceiling, these beams obstruct and work the overhanging scaffolding. Although it may not be possible to move to the place where it should be, if the overhanging part is removable or foldable, the beam provided on the ceiling can be removed even when working at a high place near the ceiling inside the building. By avoiding this, it is possible to move the overhanging scaffold to the place where the work should be performed.

  (b) If the work range is wide, work will be performed on the side of a pillar or wall because the worker's hand will not reach even if the worker is placed on the overhang part of the overhang scaffold once fixed in place. There may be places where it cannot be done. In this case, it is only necessary to move the overhanging scaffold from a place where the overhanging scaffold is once fixed to a predetermined place where the worker's hand can reach, and then work after fixing the overhanging scaffold there. At this time, the overhanging scaffold may be moved once after the overhanging portion is removed or rotated upward or downward, but it may be moved while overhanging.

  If it is troublesome to move the overhanging scaffold fixed at a predetermined place each time, a plurality of overhanging scaffolds may be prepared and connected in the horizontal direction to form a wide work table. In this way, a wide working range can be covered without moving the overhanging scaffold fixed at a predetermined place.

  For example, a plurality of overhanging scaffolds may be prepared, the overhanging scaffolds may be moved one by one to the work site, and the plurality of overhanging scaffolds may be connected horizontally in the work site. In addition, after the plurality of overhanging scaffolds are connected in this manner, the whole can be moved in the horizontal direction and then fixed at a predetermined position.

  As a means for connecting a plurality of overhanging scaffolds in the horizontal direction, for example, the base frames of adjacent overhanging scaffolds may be connected by a connecting member. Alternatively, the connecting members that connect the base frames of the adjacent overhanging scaffolds may be further connected by braces.

  And, as a position for connecting a plurality of overhanging scaffolds in the horizontal direction, for example, when the work platform of the overhanging scaffold is a rectangle, the long sides of the work floors of adjacent overhanging scaffolds face each other at least two units. Connect or connect at least two units with the short sides of the work floors of adjacent overhanging platforms facing each other, or face the long sides of the work floors of adjacent overhanging scaffolds and face each other with the short sides facing each other At least three units may be connected. Furthermore, instead of directly facing the long sides or the short sides of the work floors of the adjacent overhanging scaffolds, they may be opposed to each other via a cloth board.

  (c) Next, when changing the height of the workbench, instead of supporting the workbench with a variable-length column, a plurality of horizontal frames (frames) are stacked one after another via a slider crank. If the height of the workbench is changed by extending or contracting the slider crank provided on the base, the height of the workbench of the overhanging scaffold can be changed widely and neatly. The number of stages of the frame (frame body) and the number of stages of the slider crank provided between the frames are not particularly specified, but are preferably about 2 to 4 stages and are practical.

  The X-shaped slider crank can be folded and stretched, and the work floor can be raised and lowered by manually extending or retracting part or all of the X-shaped slider crank, and its height is stepped Can be fixed. In addition, it is possible to give the role of a support to the raising / lowering trap to the work table provided between the frames after extending the slider crank. Therefore, the height of the frame after extending the slider crank can be fixed, and thus the height of the work table can be fixed.

  (d) That is, one or more horizontal frames (frames) are stacked in order via an X-shaped slider crank on a rectangular base frame (frame) with wheels on the ground contact surface, and then lifted and lowered. By providing a working trap (ladder), it is possible to smoothly move and fix to the place where work should be done, and to form a lifting and moving scaffold that can change the height of the work table in a wide range and skillfully Can do.

  The work table may be installed using the uppermost horizontal frame as the work table frame, or may be installed by providing another work table frame on the uppermost horizontal frame. A handrail pillar of variable length can be erected at the four corners of the work bench installed in this way, a handrail bar can be attached between adjacent handrail pillars, and a baseboard can be attached on the four sides. As a result, the assembly of the workbench is completed. The assembly of the work table may be performed before the movement or after the movement. Beams made of concrete or H-shaped steel are often formed on the ceiling inside the building. When working at a high place near the ceiling, these beams are used as handrail bars and handrail pillars on the workbench. Interference may occur, but at this time, it can be dealt with by removing or shortening the handrail bar or handrail pillar that interferes with these beams. If a separate workbench frame is provided on the uppermost horizontal frame, the entire workbench, including the handrail pillars, can be removed from the horizontal frame when storing and transporting the lifting / moving scaffold. it can.

  And as above-mentioned, an up-and-down movement type extension scaffold can be formed by connecting an extension part to the rectangular work table so that it may become flush. Since such an up-and-down moving type overhanging scaffold can be expanded and contracted in the vertical direction, it can be stored and transported with its height lowered.

  In this way, the operator works at a high place in the lifting and moving overhang scaffold that extends to a predetermined height after being smoothly moved and fixed to a predetermined place where the work is to be performed. Therefore, a handrail is required for the workbench to prevent the worker from falling from a high place. The handrail of the workbench may be attached in advance to the lifting / moving type overhanging 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 / moving overhanging scaffold is contracted in the vertical direction, that is, after the handrail is safely attached in a state where the work table is at a low position, the lifting / moving overhanging scaffolding is moved in the vertical direction. By stretching, the worker can work safely at a high place.

  (e) In addition, since such a lifting and lowering extension scaffold can be extended and contracted in the vertical direction, when storing the lifting and lowering extension scaffold, the height can be reduced by lowering the height. Space can be saved. Moreover, the height at the time of storage can be reduced by making a worktable removable from a horizontal frame. Furthermore, the height at the time of storage can also be reduced by making the work table and the horizontal frame removable from the rectangular base frame. Further, by making the work floor of the lifting and lowering movable scaffolding foldable, the storage space in the width direction can be saved.

  (f) Such a lifting and moving mobile overhanging scaffold may cause the center of gravity to come off from the base frame due to the weight of the overhang and the weight when an operator is placed on the overhang, and the entire overhang scaffold may fall over. There is. Therefore, it is preferable to provide a fall prevention mechanism.

  As a fall prevention mechanism, a weight balance can be obtained by installing a weight on the base frame. Alternatively, when there is a ceiling at the place where the overhanging scaffolding is installed, a ceiling strut member having a variable length may be attached to the base frame or the horizontal frame, and the upper end portion of the strut member may be stretched on the ceiling. At this time, it is preferable to attach a jack base with a buffer material to the upper end portion of the strut material.

  (g) In addition, an overhanging part is connected to the work platform of the lifting / moving type overhanging scaffold, but the overhanging part is supported from below by withstanding the load of the overhanging part and the load when an operator is placed on the overhanging part It is preferable to install a diagonal member of variable length that can be obliquely disposed between the base frame and the overhanging portion.

  As the diagonal material having a variable length, it is preferable that the diagonal material is configured to be slidable from the inner cylinder and the outer cylinder and can be adjusted to a predetermined length by stopping with a fixing pin.

  Based on these findings, the lifting and moving overhang scaffold that can smoothly move and fix to the place where the work should be performed and can change the height of the workbench in a wide range and skillfully is completed according to the present invention. Therefore, the gist of the present invention is the following lifting / moving type overhanging scaffolds (1) to (5).

  (1) 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 raised and lowered, a work table, and an overhang that is flush with the work table and the floor. Lifting movable overhanging scaffold characterized by comprising a section.

  (2) The lifting / moving overhanging scaffold according to (1) above, wherein the overhanging portion is rotatable with respect to the end surface of the work table.

  (3) The lifting / moving type overhanging scaffold according to (1) or (2) above, which has a fall prevention function.

  (4) The above-mentioned (1) to (3), characterized in that an oblique member of variable length capable of supporting the overhanging portion from below is installed obliquely between the base frame and the overhanging portion. One of the lifting and moving overhang scaffolds.

  (5) A lifting / moving overhanging scaffold formed by connecting a plurality of the lifting / moving overhanging scaffolds according to any one of (1) to (4) in the horizontal direction.

  The lifting / moving type overhanging scaffold according to the present invention can be smoothly moved to a predetermined place where the work should be performed and fixed there, and the work table has an overhang part and the height of the work table and the overhang part can be widened. Since it is possible to change it neatly, work at a high place can be performed efficiently and safely.

It is an example of the up-and-down movement type overhang scaffold which concerns on this invention, and shows the state which extended | stretched the 1st step and the 2nd step slider crank from the top. (a) is a front view, (b) is a right side view, and (c) is a plan view. It is a front view which shows the state which extended | stretched all the slider cranks of the raising / lowering type extension scaffold of FIG. 1 to the orthogonal | vertical direction. It is a front view which shows the state which folded the raising / lowering type extension | hanging scaffold of FIG. 1 to the orthogonal | vertical direction. FIG. 2 is a front view showing a state in which the handrail pillar of the work table is shortened after the lifting / moving type overhanging scaffold in FIG. 1 is folded in the vertical direction. The work example in the case of work | working at the high place near the ceiling inside a building is shown for the raising / lowering type extension scaffold of FIG. (a) is a front view, (b) is a right side view. It is a front view which shows the raising / lowering movement type extension scaffolding of the state folded compactly after working using the raising / lowering type movement extension scaffold of FIG. FIG. 2 is another example of the lifting / moving overhanging scaffold according to the present invention, in which the two lifting / moving overhanging scaffolds of FIG. 1 are arranged in parallel and connected via a cloth plate between the two work tables; A U-shaped work surface is formed by the two overhang portions and one cloth plate. The state where the first and second slider cranks are extended from the top is shown. (a) is a front view, (b) is a right side view, (c) is a plan view, and (d) is a handrail layout (plan view). The work example in the case of working in the high place close | similar to the ceiling inside a building is shown for the raising / lowering type extension scaffold of FIG. (a) is a front view, (b) is a handrail layout (plan view).

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

  FIG. 1 is an example of an up-and-down moving type overhanging scaffold according to the present invention, in which (a) is a front view, (b) is a right side view, and (c) is a plan view. Here, a state in which the first and second slider cranks are extended from the top is shown.

  This lifting / moving overhanging scaffolding comprises a rectangular base frame 5 which has wheels on the ground surface and can be moved and fixed to a predetermined place, and a three-step horizontal frame 40 which can be moved up and down. 60 so that it is flush with the floor. Here, since the overhanging portion 20 is pivotably connected upward via a short side of the floor of the work table 60 and the hinge structure 67, the overhanging portion 20 is stored on the floor surface of the work table 60. Be able to.

  In addition, the lifting / moving overhanging scaffold is provided with a fall prevention mechanism in order to prevent the entire overhanging scaffold from overturning.

  That is, the weight 8 is placed on the base frame 5 and the ceiling bracing member 30 having a variable length is attached to the base frame 5 or the horizontal frame 40, whereby the upper end portion of the bracing member 30 is provided with a cushioning material. The jack base 75 can be used to stretch the ceiling. In this example, the lower end portion of the tension member 30 is attached to the horizontal frame 40 in the second stage from the top.

  At the four corners of the rectangular base frame 5, base frame pillars 7 are erected, and wheels 6 with brake locks are attached to the lower ends thereof. In addition, an outrigger 76 having a jack base 75 at the tip is attached to the side surface of each column 7 of the base frame, and is installed so as to be able to rotate in the horizontal direction around each column 7 of the base frame. Yes. This lifting / moving overhanging scaffold is moved by releasing the brake lock of the wheel 6 and pushing the lifting / moving overhanging scaffold horizontally while keeping the jack base 75 lifted. And after moving to a predetermined place, while locking the brake of the wheel 6, it can fix in a predetermined place by grounding the jack base 75. FIG.

  Three rectangular horizontal frames 40 that can be moved up and down are provided on the rectangular base frame 5, and an X-shaped slider crank is formed by crossing and attaching two diagonal members between the frames. 50 are vertically arranged in two rows.

  In this example, the base frame 5 also serves as the lowermost horizontal frame, but a lowermost horizontal frame 40 may be provided separately from the base frame 5. When the lowermost horizontal frame 40 is provided separately from the base frame 5, the base frame 5 and the horizontal frame can be separated. Therefore, the upper member including the horizontal frame can be detached from the base frame when moving and transporting the lifting and moving overhang type scaffolding, so that the work becomes easier and the space is effectively used for storage. be able to.

  The lifting / moving overhanging scaffold is lifted / lowered by sliding two diagonal members of an X-shaped slider crank 50 provided between the frames 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. .

  Here, when raising and lowering the lifting and moving movable overhanging scaffold, the X-shaped slider crank 50 provided between the frames is extended upward, and then attached to the both end surfaces of each frame so as to be erected. In addition to supporting the upper horizontal frame with a support made of a long member 70 and a cross member 71, the height of the horizontal frame is fixed, and this support post also serves as a lifting trap for the work table 60. It will be.

  On the other hand, when lowering the lifting / moving overhanging scaffold, the column of the upper member 70 and the cross member 71, which are slidably mounted on both side surfaces between the upper and lower frames, are pushed down inward. The support of the horizontal frame 40 is removed, and the X-shaped slider crank 50 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.

  In this lifting / moving overhanging scaffold, handrail pillars 62 are installed at the four corners of the uppermost horizontal frame 40, and handrail bars 63 are attached between adjacent handrail pillars 62, Further, the baseboard 64 is attached on the four sides, and the assembly of the work table 60 is the same. The assembly of the work table may be performed before or after the movement. .

  In this example, since the uppermost horizontal frame 40 of this lifting and moving movable overhanging scaffold also serves as a work floor frame, the uppermost horizontal frame 40 is extended after the uppermost X-shaped slider crank 50 is extended upward. The long member 70 of the support column 69 for supporting the uppermost horizontal frame 40 is supported by the uppermost horizontal frame 40 via a lateral member 41 provided at the lower part of the uppermost horizontal frame 40 to thereby determine the uppermost horizontal frame 40. Fix at height.

  A work floor frame can be provided separately from the uppermost horizontal frame 40. In this case, the uppermost horizontal frame 40 is extended after the uppermost X-shaped slider crank 50 is extended upward. Since the uppermost horizontal frame 40 can be fixed at a predetermined height by directly supporting the uppermost horizontal frame 40, the long member 70 of the support column 69 for supporting the uppermost horizontal frame 40 There is no need to provide the transverse member 41 at the bottom.

  The operator moves the lifting / moving overhanging scaffold to a predetermined location, fixes the lifting / moving overhanging scaffold in that position, and then rotates the overhanging portion 20 stored on the floor of the workbench in the opposite direction. The horizontal frame 40 of the uppermost stage is raised to a predetermined height by extending the X-shaped slider crank 50 of each stage by moving and then expanding outward. That is, the number of stages for extending the slider crank 50 is determined corresponding to the predetermined height, and the slider crank 50 is extended by the required number of stages. In FIG. 1, with the lowermost slider crank 50 folded, the first and second slider cranks 50 are stretched from the top, so that the work table 60 and the floor surface of the overhanging portion 20 are set to a predetermined level. Raise to height. The predetermined height of the uppermost horizontal frame 40 is determined according to the height of the place where the operator should work on the work table 60 and the overhanging portion 20. Then, the height of the horizontal frame 40 is fixed by leaning the support | pillar 69 between each frame between frames.

  Thereafter, the diagonal member 21 that supports the projecting portion 20 from below is fixed between the base frame 5 and the lower surface of the projecting portion 20 while adjusting the length thereof, and then the column 69 between the left frames toward the left. Climbing up (which is also an elevating turret) and going up to the work table, work such as interior and exterior work.

  FIG. 2 is a front view showing a state in which all of the horizontal frame of the lifting / moving overhanging scaffold is extended in the vertical direction. That is, the state in which all of the three-stage slider cranks 50 are extended is the highest level of the work table 60 and the overhanging portion 20. In this state, the operator can get on the work table 60 and the overhanging portion 20 and work at a high place on the inner and outer walls of the building.

  FIG. 3 is a front view showing a state in which the lifting / moving overhanging scaffold is folded in the vertical direction. That is, all the three-stage slider cranks 50 are folded, and this state is the lowest level of the work table 60 and the overhanging portion 20. In this state, the worker can get on the work table 60 and the overhanging portion 20 and work at a relatively low place on the inner and outer walls of the building. While maintaining this height, it is possible to move to another place where work should be performed, and it is possible to pass through the width of a door in an ordinary building or load it on an elevator.

  FIG. 4 is a front view showing a state in which the handrail pillar of the work table is further shortened after the lifting / moving type overhanging scaffold is folded in the vertical direction.

  As shown in FIG. 4, the handrail pillar of the workbench can be shortened or the handrail bar can be further removed, so that the ceiling inside the building is low, or the beam made of concrete or H-shaped steel is on the ceiling. Even if the lifting / moving overhanging scaffold is formed and folded in the vertical direction, the lifting / moving overhanging scaffolding can be installed even when the handrail pillar or handrail bar of the work table interferes. In addition, even if the doors and elevators in general buildings are low and it is not possible to pass through the doors and load the elevators by simply folding the lifting and moving overhanging scaffold in the vertical direction, this lifting and moving type Overhang scaffolding can be installed.

  As described above, this lifting / moving overhanging scaffold can change the height of the work table in a wide range and neatly by simply extending and retracting the slider crank. Further, since the handrail pillar of the work table can be shortened or the handrail bar can be further removed, the height of the entire lifting and lowering extension scaffold can be further reduced. In this example, the slider crank has three stages, but the number of stages is not particularly limited. Depending on the height of the place where the work should be performed, the slider crank may have two or less stages or four or more stages.

  FIG. 5 shows an example of work in the case where the work is performed at a high place near the ceiling inside the building with this uplift movable overhanging scaffold. (a) is a front view, (b) is a right side view.

  As shown in the figure, even when the beam 31 is provided on the ceiling 29, this lifting / moving type overhanging scaffold can be installed avoiding the beam 31, so it can be smoothly moved to the place where the work should be performed and fixed. can do. Here, part of the handrail bar at the top of the workbench is removed to avoid interference with the beam 31.

  FIG. 6 is a front view showing a compactly folded state after working using this lifting / moving type overhanging scaffold.

  In this lifting / moving overhanging scaffold, all the workbench forming members can be removed except for the frame forming the floor surface. That is, after removing the handrail pillar 62, the handrail bar 63, and the baseboard 64, the overhanging portion 20 can be rotated upward to be folded and placed on the floor surface of the work table 60.

  As a result, the lifting / moving overhanging scaffold can be folded more compactly, so that the space can be used effectively even when stored in a warehouse or the like.

  In the case of an uplifting movable overhanging scaffold provided with a work floor frame in addition to the uppermost horizontal frame 40, the entire work table 60 including the working floor is included during transportation or storage of the upright moving overhanging scaffold. Can also be removed. Further, when the lowermost horizontal frame 40 is provided separately from the base frame 5, the base frame 5 and the horizontal frame can be separated. Since the upper member including the frame can be removed from the base frame, the work is facilitated and the space can be used more effectively during storage.

  FIG. 7 is another example of the lifting / moving overhanging scaffold according to the present invention, in which two lifting / moving overhanging scaffolds of FIG. 1 are arranged in parallel and connected via a cloth plate between them. A U-shaped work surface is formed by two work tables, two overhang portions, and one cloth plate. The state where the first and second slider cranks are extended from the top is shown. (a) is a front view, (b) is a right side view, (c) is a plan view, and (d) is a handrail layout (plan view).

  Each of the lifting / moving overhanging scaffolds constituting the connected up / down moving overhanging scaffold is basically the same as that described in the first embodiment. Therefore, in FIG. 7, some members already shown in FIGS. 1 to 6 are omitted from the reference numerals.

  That is, it comprises a rectangular base frame 5 that has wheels on the grounding surface and can be moved and fixed to a predetermined place, and a three-step movable horizontal frame 40. Further, the overhanging portion 20 is provided on the work table 60 and the floor surface. It is prepared to become one. Here, since the overhanging portion 20 is pivotably connected upward via a short side of the floor of the work table 60 and the hinge structure 67, the overhanging portion 20 is stored on the floor surface of the work table 60. Be able to.

  In addition, this lifting / moving overhanging scaffolding has a weight 8 placed on the base frame 5 as a fall-preventing mechanism, and a variable length ceiling strut 30 is provided to prevent the entire overhanging scaffold from overturning. By attaching to the base frame 5 or the horizontal frame 40, the upper end portion of the tension member 30 can be stretched to the ceiling via the jack base 75 with a cushioning material. In this example, the lower end portion of the tension member 30 is attached to the horizontal frame 40 in the second stage from the top.

  In this example, the two lifting and moving movable overhanging scaffolds having no widening portion shown in FIG. 1 are used. However, one or two of them can be widened according to the three-dimensional shape of the place to work. It may be replaced with an up-and-down moving type overhanging scaffold.

  In addition, in the case of using a lifting and moving overhang scaffold having a worktable that can be widened, in order to make the worktable widen, the floor surface of the worktable 60 installed on the uppermost horizontal frame 40 is: It is composed of one horizontal main body portion and two widened portions provided on the respective sides of the main body portion, and a hinge structure is provided between the main body portion and the widened portion. What is necessary is just to connect to a main-body part so that rotation is possible upwards via a structure. Moreover, it can prevent a widening part from rotating below a main-body part by installing a contact material in the lower part of the base part of a widening part.

  The lifting / moving overhanging scaffolds are respectively moved to the work site in a folded state, and the two lifting / moving movement overhanging scaffolds are arranged in parallel at the work site and are connected in the horizontal direction via the cloth board 25 to be moved up and down. The overhanging scaffolding may be assembled to a predetermined height, or two liftable moving overhanging scaffolds may be arranged in parallel and assembled to a predetermined height, and then connected in a horizontal direction via the cloth board 25. .

  In addition, as a cloth board, it has a long side and a short side corresponding to the three-dimensional shape of the work place of the lifting / moving type overhanging scaffold among the cloth boards (cloth frames with a floor) known as a scaffold board such as a temporary scaffold. You can use something. Since the gripping metal (not shown) is attached to the both ends of the cloth board 25, the cloth board 25 is held by the frame of the overhanging part or the work table, so that the cloth board 25 is moved up and down by two lifting movement scaffolds. Can be provided.

  FIG. 8 shows an example of work in the case where work is performed at a high place near the ceiling inside the building with the connected lifting and moving overhang scaffold. (a) is a front view, (b) is a handrail layout (plan view).

  As shown in FIG. 8 (a), even if the beam 31 is provided on the ceiling 29, the connected uplift movable overhanging scaffold lowers the handrail column 62, the handrail bar 63, and the ceiling strut 30 in the direction of the arrow. By removing the beam 31, it can be installed avoiding the beam 31, and can be moved and fixed smoothly to the place where the work should be performed.

  In addition, as shown in FIG. 8 (b), this connected up and down movable overhanging scaffold forms a U-shaped work surface with two work tables, two overhang portions and one cloth board. Therefore, the worker can easily access the place to work.

  And as for this connected raising / lowering movement type extension | hanging scaffold, the worktable formation member can remove all except the flame | frame which forms the floor surface similarly to Example 1. FIG. That is, after removing the handrail pillar 62, the handrail bar 63, and the baseboard 64, the overhanging portion 20 can be rotated upward to be folded and placed on the floor surface of the work table 60. As a result, the lifting / moving type overhanging scaffold can be folded in a compact manner, so that it is possible to pass through the width of a door in an ordinary building or to load it on an elevator. In addition, the space can be used effectively when stored in a warehouse or the like.

  Further, as in the first embodiment, when a lifting / moving overhanging scaffold provided with a work floor frame in addition to the uppermost horizontal frame 40 is connected, when the lifting / moving overhanging scaffold is transported or stored, The entire work table 60 including the floor can also be removed. In addition, when the lowermost horizontal frame 40 is provided separately from the base frame 5, the base frame 5 and the horizontal frame can be separated, so when moving and transporting the lifting movable overhanging scaffold, Since the upper member including the horizontal frame can be removed from the base frame, the work is facilitated and the space can be used effectively for storage.

  According to the present invention, it is possible to smoothly move to a predetermined place where the work should be performed and fix it there, and to provide the work table with the overhanging portion and to change the height of the work table and the overhanging portion neatly in a wide range. Since the lifting / moving type overhanging scaffolding that makes it possible is provided, work at high places can be performed efficiently and safely on the outer wall or the outer periphery of the building.

5 Base frame 6 Wheel with brake lock 7 Base frame column 8 Weight 10 Worker 20 Overhanging portion 21 Diagonal material 22 Fixing pin 25 Fabric board 29 Ceiling 30 Ceiling extension material 31 Beam 40 Horizontal frame 41 Horizontal frame member 50 X-shaped slider crank 51 Pin 52 Fastener 60 Worktable 62 Handrail pillar 63 Handrail bar 64 Skirting board 67 Hinge structure 69 Post between frames (up and down trap)
70 Long members of struts between frames 71 Cross members of struts between frames 75 Jack base 76 Outriggers

Claims (5)

  Provided with wheels on the ground surface and a rectangular base frame that can be moved and fixed to a predetermined location, a plurality of steps of a vertically movable frame, a work table, and an overhanging portion that is flush with the work table and the floor. Lifting and moving overhang scaffold characterized by that.   The lifting / moving type overhanging scaffold according to claim 1, wherein the overhanging portion is rotatable with respect to the end surface of the work table.   The lifting / moving type overhanging scaffold according to claim 1 or 2, characterized in that it has a fall prevention function.   The diagonal material of variable length which can support an overhang | projection part from the downward direction is installed diagonally between a base frame and an overhang | projection part, The Claim 1 characterized by the above-mentioned Lifting and moving overhang scaffold.   5. A lifting / moving overhanging scaffold comprising a plurality of the lifting / lowering extending overhanging scaffolds according to claim 1 connected in the horizontal direction.

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