JP6416681B2 - Elevating type mobile scaffolding with a handrail frame that can be stored - Google Patents

Description

  The present invention relates to an elevating type moving scaffold used for interior and exterior construction and the like, and relates to an elevating type moving scaffold that improves its transportability and storability by making it possible to store a handrail part.

  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 table up and down or by installing the work table 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 for the workbench in order to prevent the worker from falling from 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.

  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 a ground contact surface, and a lifting trap is provided. An elevating mobile scaffold with a (ladder) is disclosed. 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 moved up and down, and its height can be fixed in stages. Is possible. Here, the raising / lowering trap also serves as a support between the frames after extending the slider crank.

  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 right side view. FIG. 1 shows a state in which all three X-shaped slider cranks 50 are extended in the vertical direction with the lifting and lowering moving scaffold 200 fixed in place, and FIG. 2 shows a state in which the same is also fixed in place. A state when all of the three X-shaped slider cranks 50 are folded in the vertical direction is shown.

  This elevating type moving scaffold 200 includes a rectangular base frame 5 having wheels on a ground contact surface and capable of moving and fixing to a predetermined place, and a plurality of steps of an extendable horizontal frame 40. Here, the uppermost horizontal frame 40 also serves as a work floor frame, and the uppermost horizontal frame 40 is provided with a work floor made of a mesh-like plate or a striped plate and handrails are installed. A work table 60 is formed.

  Pipe-shaped 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 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. The lifting / lowering moving scaffold 200 is moved by releasing the brake lock of the wheel 6 and pushing the lifting / lowering moving scaffold 200 in the horizontal direction while lifting the jack base 75. This movement is usually made with the horizontal frame 40 folded in the vertical direction. Then, after moving to a predetermined place, the brake lock of the wheel 6 is applied, and the jack base 75 is grounded to be fixed at the predetermined place.

  Three rectangular horizontal frames 40 are provided on the rectangular base frame 5 at intervals, and two diagonal members are crossed and pivotally attached between the frames. Character-shaped slider cranks 50 are erected in two rows in the vertical direction. Here, 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 lowermost horizontal frame 40 can be separated. Therefore, the upper member including the horizontal frame can be removed from the base frame when moving the liftable moving scaffold 200, so that the work becomes easier and the space is used effectively for storage. Can do.

  A work table 60 is installed on the uppermost horizontal frame 40. Handrail pillars 62 are installed at the four corners of the uppermost horizontal frame 40, handrail bars 63 are attached between adjacent handrail pillars 62, and a baseboard 64 is attached on the four sides. The assembly of the work table 60 is completed. In addition, the assembly of the work table 60 may be performed before the movement, or may be performed after the movement. Here, although the uppermost horizontal frame 40 also serves as a work floor frame, a work floor frame may be provided separately from the uppermost horizontal frame 40. When a work floor frame is provided separately from the uppermost horizontal frame 40, a work floor made of a mesh-like plate or a striped plate is stretched on the work floor frame and a handrail is installed. A stand will be formed. In this case, the entire workbench 60 including the work floor can be removed during storage and transportation of the liftable moving scaffold 200.

  The elevating movable scaffold 200 is expanded and contracted by sliding two diagonal members of an X-shaped slider crank 50 provided between the frames inward or outward in the horizontal direction. When the X-shaped slider crank 50 extends upward, the upper horizontal frame 40 rises. Conversely, when the X-shaped slider crank 50 contracts downward, the upper horizontal frame 40 rises. 40 goes down.

  When the elevating type moving scaffold 200 is extended, after extending the X-shaped slider crank 50 in the upward direction, the long member 70 and the cross member attached to each side surface between the frames so as to be erected respectively. The height of the upper horizontal frame 40 is fixed by supporting the upper horizontal frame 40 with the support 69 composed of 71. This operation is repeated in each stage of the slider crank 50 until the uppermost horizontal frame 40 rises to a predetermined height. On the other hand, when folding the lifting and lowering moving scaffold 200, first, the support of the upper horizontal frame 40 is removed by pushing down the column 69 composed of the long member 70 and the cross member 71 inward, and then the X-shaped slider at that stage. The crank 50 is contracted downward to lower the height of the upper horizontal frame 40, and the height is fixed by a fastener 52. This operation is repeated in each stage of the slider crank 50 until the uppermost horizontal frame 40 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 50 will be described in detail. The crossing portion of the two diagonal members is pivotally attached by a pin 51 and the two diagonal members. The left end of each is pivotally attached to the long sides of the upper and lower frames. Therefore, the right ends of the two diagonal members can be moved and fixed in the horizontal direction along the long sides of the upper and lower frames, respectively, and after the slider crank 50 is extended upward, there is a gap between the upper and lower frames. The upper horizontal frame 40 can be fixed at a predetermined height by supporting the upper horizontal frame 40 by the columns 69 attached to the both side surfaces so as to be erected. Further, after the slider crank 50 is contracted in the downward direction, 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 example, since the uppermost horizontal frame 40 of the elevating type moving scaffold 200 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 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, whereby the uppermost horizontal frame 40 is supported. Is fixed at a predetermined height.

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

  In this manner, the worker moves the lifting / lowering moving scaffold 200 to a predetermined location, fixes the lifting / lowering moving scaffold 200 at the predetermined position, and then performs the extension work of the X-shaped slider crank 50 at each stage. As a result, after the uppermost horizontal frame 40 is raised and fixed to a predetermined height, the column 69 between the frames, which also serves as lifting and lowering traps, is climbed to the work table 60 to perform work such as interior and exterior construction. .

  In the above description, the liftable moving scaffold 200 having the three-stage horizontal frame 40 has been described. However, as shown in FIG. 3, the liftable moving scaffold 200 having the four-step liftable horizontal frame 40 has also been put into practical use. Yes. Note that the liftable moving scaffold 200 shown in FIG. 3 has four horizontal frames 40, the base frame 5 is larger than the horizontal frame 40, and the lowermost support column 69 is inclined. Except for this, it has the same configuration and function as the lifting type mobile scaffold 200 shown in FIGS. 1 and 2.

  A workbench is installed at the top of the lifting platform, and workers will be working at high altitudes, so handrails are required on the workbench to prevent workers from falling from high altitudes. As described above.

  However, after the work at a predetermined place is completed, the liftable moving scaffold may be transported for work at another place or stored in a warehouse or the like. At this time, since the handrail becomes an obstacle due to the space during transportation and storage, the handrail is once removed from the work table, and then the lifting and lowering movable scaffolding body is separately transported or stored. Sometimes, the removed handrail is managed separately, and is easily lost. In addition, it is possible to forget that the removed handrail is managed separately and transport only the liftable mobile scaffold main body to a work place such as interior and exterior construction. Furthermore, there is a problem that it takes time and labor to remove the handrail from the workbench and to attach the handrail to the workbench. If a work floor frame is provided separately from the uppermost horizontal frame, the entire work platform including the handrail can be removed from the lifting / moving scaffold. And during storage, the handrail may be removed from the workbench due to space limitations, leaving problems.

  Because these problems are caused by removing the handrail from the workbench, in order to solve these problems, it is not necessary to remove the handrail from the workbench after working on the liftable mobile scaffold. And it is sufficient.

  In Patent Document 2, it is possible to stand and fix a planar handrail frame that can accommodate a handrail member that also serves as a lift door in the same plane, on each edge of the work floor, and the work floor. An elevating type moving scaffold having a structure in which the entire handrail frame can be largely rotated to the outside of the work floor with the lower frame of the handrail frame erected on each edge as a rotation axis is disclosed. During work, the handrail frame is vertically fixed to each edge of the work floor, and then the handrail member housed in the flat handrail frame is pulled out, so that the handrail frame and the handrail member work together. Since the handrail can be formed in the four surroundings, the safety of the worker can be achieved. On the other hand, when transporting and storing the lifting type moving scaffold, the handrail member is stored in a flat handrail frame that also serves as a lifting door, and the entire handrail frame is enlarged with the lower frame of the standing handrail frame as the rotation axis. It can be rotated outward and placed sideways on the liftable mobile scaffold body. Therefore, even if the handrail is not removed from the workbench after work on the lifting / lowering mobile scaffolding, it will fit in the same space as the lifting / lowering movable scaffolding body after it is stored sideways on the lifting / lowering moving scaffolding body. It is not necessary to remove the handrail from the workbench at the time and during storage.

  FIG. 4 shows an embodiment at the time of work when the handrail frame disclosed in Patent Document 2 is attached as a handrail of the liftable moving scaffold shown in FIG. (a) is a front view, (b) is a right side view.

  The handrail frame 66 of the liftable moving scaffold is formed in a planar shape from two handrail pillars 62 and two handrail bars 63 that horizontally connect the handrail pillars 62, and the baseboard 64 is formed by the handrail frame 66. It is attached as a lower frame. The handrail frame 66 can be largely rotated outward with the lower frame as a rotation axis 68. Two handrail frames 66 are vertically fixed to the respective edge portions 56a of the work floor, and the handrail members 65 housed in the same plane as the planar handrail frame 66 are respectively 90 in the lateral direction. It is pulled out by being rotated by .degree. And is fastened to the handrail column 62 of the handrail frame 66 facing it. As a result, handrails are also provided above the respective end portions 56b of the work floor, and the handrails are formed around the work table 60 by the two handrail frames 66 and the two handrail members 65. Here, in addition to the role as a handrail, the pulled-out handrail member 65 plays a role as a door for raising and lowering the worker to the trap.

  FIG. 5 is an explanatory view (right side view) showing a procedure for rotating the flat handrail frame 66 to the outside and placing it side by side on the liftable moving scaffold main body 201a.

  When transporting or storing the lifting / moving scaffold to another point after the work on the lifting / lowering platform is finished, fold the slider crank of the lifting / lowering platform to raise the height of the workbench. make low. Then, after the handrail member 65 held on the handrail column 62 of the facing handrail frame 66 is removed from the handrail column 62 and rotated by 90 ° in the horizontal direction and stored in the plane of the handrail frame 66, the handrail frame 66 is removed. Is moved upward, and the handrail frame 66 erected vertically at each edge of the work floor is released. Thereafter, each handrail frame 66 is rotated outwardly about the axis of the rotation shaft 68 provided in the lower frame of the handrail frame 66, and is stored side by side in the liftable moving scaffold main body 201a.

  In this way, the handrail frame is stored sideways on the lifting and lowering moving scaffold body during transportation and storage, but at the time of work, the lifting and lowering moving scaffold is moved to a predetermined place, fixed at that place, and then lifted and lowered. The handrail frame that was stored sideways on the main body of the moving scaffold was rotated largely outward and fixed vertically to each edge of the work floor, and then stored in the flat handrail frame. By pulling out the handrail member, the handrail is formed on the four sides of the work table by the handrail frame and the handrail member. Therefore, the worker can work safely on the work table.

Japanese Utility Model Publication No. 2-147545 JP 2010-275816 A

  However, the elevating type moving scaffold provided with the handrail frame disclosed in the cited document 2 has the following problems (i) to (iii).

  (i) FIG. 6 shows that the lifting / moving scaffold is moved to a predetermined working place, fixed at the place, and then placed on the lifting / moving scaffold main body for work on the lifting / moving scaffold. FIG. 6 is an explanatory diagram showing a procedure for causing each handrail frame 66 to rotate largely backward in the upward direction about the lower frame of the handrail frame as a rotation axis and to stand the handrail frame vertically on each edge of the work floor (right side) Is a plan view).

  Here, in addition to the work space that can largely reversely rotate the handrail frame 66 that is stored side by side on the lifting and lowering type moving scaffold main body, the work space for the worker 90 that reversely rotates the handrail frame. Is required on both sides of the work floor. Therefore, this work cannot be performed in a narrow place such as a corridor where the work space is not sufficient. The above is a description of the work space when each handrail frame 66 stored side by side on the lifting and lowering moving scaffold main body is rotated largely upward to stand vertically on each edge of the work floor. However, the same problem applies to the work space when the handrail frame 66, which is vertically fixed to each edge of the work floor, is rotated downward and placed sideways on the lifting / moving scaffold main body. Occurs.

  (ii) FIG. 7 is a painting work diagram (right side view) on the wall surface of the high place on the work platform of the lifting / moving scaffold. In this painting operation, the handrail frame 66 existing between the worker 90 and the wall surface 91 may interfere with the painting operation, but the wall surface 91 interferes even if the handrail frame 66 is tilted and moved. . Therefore, it is not possible to perform a painting operation where the wall surface 91 interferes with the movement of the handrail frame 66.

  (iii) FIG. 8 shows the plane handrail frame that is laid on the liftable moving scaffold main body in order for the operator 90 to stand the handrail frame 66 vertically from above the lifting / moving scaffold platform. It is a figure (right side view) which is going to rotate. However, in this case, the worker 90 works after removing the safety belt 92 worn on the waist. Since the center of gravity of the worker 90 protrudes outside the work table, the balance of the worker 90 is lost, and the worker 90 may fall or fall. A structure that allows such a dangerous work cannot be adopted.

  As described above, it is possible to stand and fix the planar handrail frame 66 that can accommodate the handrail member 66 that also serves as the elevating door in the same plane on each edge of the work floor, and The lifting and lowering movable scaffolding having a structure that allows the handrail frame 66 to rotate outside the work floor with the lower frame of the handrail frame as a rotation axis does not require removal of the handrail from the workbench after the work on the lifting and lowering moving scaffold. There are many issues from the viewpoint of workability and safety.

  An object of the present invention is to provide an elevating mobile scaffold that is excellent in workability and safety without having to remove a handrail from a workbench after work.

  The inventors of the present invention have made various studies on a lifting movable scaffold that is excellent in workability and safety without having to remove the handrail from the workbench after work. As a result, the following findings (A) to (G) were obtained.

  (A) When transporting and storing the lifting platform, the handrail becomes a hindrance due to space, but removing the handrail member each time after work and transporting or storing it separately causes problems such as loss of the handrail member. . Further, when considering the trouble of removing and attaching the handrail member, there is a problem in terms of work efficiency. In addition, it is preferable to make the occupied space as compact as possible when transporting and storing the liftable moving scaffold. Therefore, it is desirable to make the lifting and lowering movable scaffolding that can be transported and stored without removing the handrail member from the workbench and that is compact during transportation and storage. For this purpose, it is preferable that the handrail member can be stored sideways on the main body of the liftable moving scaffold.

  (B) The handrail frame shown in FIG. 6 requires a large work space for its assembly. This is because each handrail frame rotates significantly with the lower frame of the handrail frame as the rotation axis and the height of the handrail frame as the radius. It turns out that it is because it makes it. Therefore, in order to reduce the work space, the rotation radius of the handrail frame may be reduced. For this purpose, the rotation axis of the handrail frame may be a horizontal axis that is perpendicular to the lower frame of the handrail frame, rather than the lower frame of the handrail frame. At this time, if the length of the lower frame of the handrail frame is shortened, the rotation radius of the handrail frame is correspondingly reduced.

  Moreover, when performing the painting work on the work platform of the liftable moving scaffold having the planar handrail frame shown in FIG. 6, the handrail frame existing between the worker and the wall surface becomes an obstacle (see FIG. 7). This is because the handrail frame hits the wall surface when trying to move the handrail frame. In order to prevent the handrail frame from hitting the wall surface even if the handrail frame is moved, the handrail frame may be erected on the edge of the work floor, and the handrail frame may be moved only along the wall surface. For this purpose, the handrail frame erected may be rotated within the vertical plane. In other words, the axis of rotation of the handrail frame is not the lower frame of the handrail frame standing upright, but the horizontal direction that passes through substantially the center of the lower frame of the handrail frame standing upright and is perpendicular to the handrail frame. The axis should be In this way, the radius of rotation of the handrail frame is reduced.

  Furthermore, when the flat handrail frame shown in FIG. 6 is assembled from the workbench, there is a risk that the worker may fall over or fall down when the handrail frame is not erected and the worker is below. This is because the position of the center of gravity of the worker protrudes outside the work floor in order to grasp the frame (see FIG. 8). If the structure is such that the center of gravity of the worker stays inside the work floor when the handrail frame is assembled, the risk is reduced. For this purpose, the axis of rotation of the handrail frame is not the lower frame of the handrail frame that is erected, but the horizontal axis that passes through the approximate center of the lower frame of the handrail frame that is erected and is perpendicular to the handrail frame. It may be the direction axis. In this way, the handrail frame that is erected can rotate only within the vertical plane, and thus can move only along the wall surface. Therefore, since the worker does not protrude outside the work floor, the center of gravity position of the worker always stays inside the work floor.

  (C) If it does in this way, the subject about the raising / lowering type mobile scaffold provided with the handrail frame disclosed by the cited reference 2 will be solved at a stretch. In other words, a planar handrail frame can be vertically fixed to each of the edges of the work floor, and it passes through a substantially central portion of the lower frame of the handrail frame that is erected, and with respect to the handrail frame. A configuration in which the handrail frame can rotate on the vertical plane with a horizontal axis that forms a right angle as a rotation axis may be employed. As a handrail frame standing on the edge of the work floor, for example, it is formed in a planar shape from two handrail pillars 62 and one or a plurality of handrail bars horizontally connecting between them, and What has the baseboard 64 attached to the lower frame can be used.

  FIG. 9 shows an elevating mobile scaffold (the present invention) in which a planar handrail frame that can rotate in a vertical plane is attached to the elevating mobile scaffold shown in FIG. 3 based on these ideas. (a) is a front view, (b) is a right side view.

  A handrail frame 66 of the liftable moving scaffold 202 is formed in a planar shape from two handrail columns 62 and two handrail bars 63 that horizontally connect the handrail pillars 62, and the baseboard 64 is a handrail frame. 66 is attached as a lower frame. In addition, you may provide the pipe or bar which connects horizontally the lower part of the two handrail pillars 62 instead of a baseboard as a lower frame of a handrail frame.

  Two planar handrail frames 66 are erected perpendicularly to the respective edge portions 56a of the work floor, and are fixed by handrail frame upper fixing fittings 83, respectively. Here, provisional metal fittings 85 for temporarily placing the handrail frame when the handrail frame is erected are provided outside the corner of the work floor. Further, each handrail frame 66 accommodates a handrail member 65 in the same plane. The handrail member 65 accommodated in the handrail frame 66 can be pulled out after being rotated by 90 ° in the lateral direction, and then held on the handrail column 62 of the facing handrail frame 66. As a result, handrails are also provided above the respective end portions 56b of the work floor, so that handrails are formed on the four sides of the work table 60 by the two handrail frames 66 and the two handrail members 65. Become. Here, when the handrail member 65 is pulled out, in addition to serving as a handrail, the handrail member 65 serves as a door for raising and lowering a worker to the trap.

  The handrail frame 66 can be rotated on its vertical surface with a horizontal axis passing through a substantially central portion of the lower frame and perpendicular to the handrail frame as a rotation axis 68. The rotating shaft 68 is located at a substantially central portion of the baseboard 64 constituting the lower frame of the handrail frame 66. The rotary shaft 68 is installed in a horizontal direction via a support fitting 45 attached to the center of each edge portion 56a of the work floor. Here, the level of the rotary shaft 68 is slightly higher than the level of the work floor. It is in. Here, a stopper 86 is provided on the outside and below the corner of the work floor so that the handrail frame 66 does not rotate too much beyond 180 °.

  FIG. 10 is an explanatory view (front view) showing a procedure for rotating the planar handrail frame 66 within the vertical plane and placing it sideways on the lifting / moving scaffold main body 202a in the lifting / moving scaffold shown in FIG. . FIG. 10A shows the preparation before the handrail frame is rotated, FIG. 10B shows the middle of the handrail frame rotation, and FIG. 10C shows the end of the handrail frame rotation.

  When transporting or storing the lifting / moving scaffold to another point after the work on the lifting / lowering platform is finished, fold the slider crank of the lifting / lowering platform to raise the height of the workbench. make low. Then, the handrail member 65 fastened to the handrail column 62 (not shown) of the rear handrail frame 66 (not shown) is removed, and rotated in the reverse direction by 90 ° in the horizontal direction, the plane of the handrail frame 66 on the front side. Then, the handrail frame upper fixing fitting 83 is lifted and released, and then the handrail frame 66 on the front side is rotated around the rotation axis 68 in the vertical plane. When the handrail frame 66 on the near side is further rotated by about 180 °, the handrail frame 66 on the near side is placed sideways on the near side of the liftable moving scaffold main body 202a and stored. When the same operation is performed on the back-side handrail frame 66 (not shown), the back-side handrail frame 66 (not shown) is placed sideways on the back side of the liftable moving scaffold main body 202a and stored.

  Therefore, when working on the lifting and lowering movable scaffolding, it is possible to improve the safety of workers by standing and fixing the flat handrail frame to the edge of the work floor, while transporting and storing the lifting and lowering movement scaffolding. Occasionally, if the handrail frame is rotated about 180 ° in its vertical plane, the horizontal axis that passes through the approximate center of the lower frame of the handrail frame and is perpendicular to the handrail frame is the axis of rotation. Since it can be stored sideways on the main body of the movable scaffolding, the occupied space during transportation and storage can be made compact. In addition, even if the handrail frame that exists between the worker and the wall surface gets in the way during the painting work, the worker can move the handrail frame along the wall surface, so the handrail frame is in the way of the wall painting work. Must not. At this time, since the center of gravity of the worker remains inside the work floor, the safety of the worker is maintained.

  (D) The work platform of the liftable moving scaffold is formed by placing a mesh plate or striped plate directly on the uppermost horizontal frame, or for a separate work floor on the uppermost horizontal frame. In some cases, a frame or striped plate is stretched on a frame. In any case, it is possible to vertically fix a flat handrail frame vertically to each of the edges of the work floor, and to pass through the substantially central portion of the lower frame of the handrail frame that is erected. The handrail frame can be rotated in the vertical plane with a horizontal axis perpendicular to the frame as a rotation axis.

  (E) In order to make it possible to vertically stand and fix a planar handrail frame to each of the edges of the work floor, the handrail frames are respectively placed on the vertical planes at approximately the center of each edge of the work floor. On the other hand, in the approximate center of the lower frame of the handrail frame, there are provided a rotating cylinder or a rotation hole that fits the rotation shaft provided at each edge of the work floor, and each handrail. A handrail frame upper fixing bracket is provided in the vicinity of the edge of the lower frame of the frame to firmly fix the handrail frame to the work floor, and a rotation shaft provided at a substantially central portion of each edge of the work floor is provided. The handrail frame can be erected on the edge of the work floor if it is fitted to the rotation hole or cylinder provided in the handrail frame and secured with the anti-removal bracket, and if the upper position fixing bracket is fastened, the handrail Can be fixed with the frame upright. Therefore, since a work table with a handrail frame is formed at the uppermost part of the liftable moving scaffold, the worker can work safely on the work table. Here, the positional relationship between the rotating shaft and the rotating cylinder or the rotating hole may be reversed. That is, a rotation shaft for rotating the handrail frame in the vertical plane is provided at the substantially central portion of the lower frame of the handrail frame, while provided at the handrail frame at the substantially central portion of each edge of the work floor. In addition to providing a rotating cylinder or a rotating hole to be fitted to the rotating shaft, a handrail frame upper fixing bracket for firmly fixing the handrail frame to the work floor is provided in the vicinity of the end of the lower frame of the handrail frame. If the rotation shaft provided at the approximate center of the lower side of the frame is fitted into the rotating cylinder or the rotation hole provided at the approximate center of each edge of the work floor, and if it is secured, the handrail frame will be the edge of the work floor. The handrail frame can be fixed with the handrail frame standing upright by fastening the upper bracket of the handrail frame. Note that the handrail frame upper fixing bracket is preferably provided in the vicinity of both ends of the lower frame of the handrail frame.

  The handrail frame upper fixing bracket is a bracket for fixing the handrail frame standing on the edge of the work floor at that position. Therefore, it is sufficient that the handrail frame can be fixed to the uppermost horizontal frame or work floor frame on which the work floor is stretched.

  The axis of rotation of the handrail frame is located at the center of the lower frame in the lifting / moving scaffold shown in FIG. 9, but it does not necessarily have to be strictly located at the center and may be in the vicinity thereof. Absent. That is, the “substantially central portion of the lower frame” means “the central portion of the lower frame and its vicinity in the vertical and horizontal directions”. When the position of the rotation axis of the handrail frame exceeds the predetermined width of the lower frame, at least the width of the lower frame on which the rotation axis is positioned may be increased. When a handrail frame is formed by attaching a baseboard as a predetermined lower frame, for example, an angle iron is attached to the central part of the baseboard to increase the width of the central part of the lower frame, and then the angle steel is rotated. What is necessary is just to position an axis.

  Further, the handrail frame is erected on the edge of the work floor, but the erection position is not necessarily erected on the edge of the work floor itself, and may be in the vicinity thereof. That is, the lower frame of the handrail frame may be provided at the same level as the edge of the work floor, or may be positioned above or below the edge of the work floor via the support fitting. When the lower frame of the handrail frame is positioned outside the outer surface position of the edge of the work floor via the support fitting, the handrail frame erected on the edge of the work floor is lowered in the vertical plane. It can be rotated. In addition, when the lower frame of the handrail frame is positioned inside the outer surface position of the edge of the work floor, the edge of the work floor becomes an obstacle when the handrail frame standing upright is rotated downward. In this case, the problem can be solved by adopting a structure in which the handrail frame can be pushed outward on the rotation shaft to a position where the lower frame of the handrail frame does not contact the edge of the work floor.

  FIG. 11 is an enlarged view (right side view) of the vicinity of the rotation axis of the handrail frame of FIG. 9B. This is an example in which the lower frame of the handrail frame is provided at a level above the edge of the work floor.

  A rotating shaft 68 of the handrail frame 66 is provided horizontally via a support fitting 45 attached to the upper surface of the edge of the work floor 56. On the other hand, a skirting board 64 serving as a lower frame of the handrail frame 66 is provided with a rotating cylinder 94 fitted to the rotating shaft 68. Then, the rotary cylinder 94 provided on the baseboard 64 is fitted to the rotary shaft 68, and is prevented from coming off by a removal preventing metal fitting 95. Since the lower frame of the handrail frame 66 is positioned outside the outer surface position of the edge portion of the work floor 56, the handrail frame erected on the edge portion 56 of the work floor can be rotated in the vertical plane as it is. .

  (F) Next, in order to rotate the handrail frame fixed upright in the vertical plane in order to transport or store the liftable moving scaffold after the work on the liftable moving scaffold is completed, What is necessary is just to cancel | release the handrail upper fixing metal fitting provided in the edge part vicinity of the lower frame. Since the handrail frame is connected to the work floor only by the rotation shaft, the handrail frame can be rotated in the vertical plane. Therefore, by rotating the handrail frame by about 180 ° within the vertical plane, the handrail frame can be stored side by side on the elevating type moving scaffold body. At this time, in order to assist the rotation of the handrail frame, a bracket such as a handle can be provided below the handrail frame. Even if there is a place where the handrail frame between the worker and the wall is in the way while the worker is painting, the handrail frame upper fixing bracket is released and the handrail frame is moved slightly along the wall surface. , The painting work at that place can be done safely.

  After the planar handrail frame is rotated downward by about 180 ° within the vertical plane, the handrail frame is laid on the liftable moving scaffold body. At this time, a handrail frame lower fixing bracket for fixing the handrail frame in this state may be provided. If it carries out like this, at the time of conveyance and storage of a raising / lowering type moving scaffold, a handrail frame can be reliably laid down and stored in the raising / lowering type moving scaffold main body.

  In addition, the handrail frame upper fixing bracket for fixing the handrail frame while standing is in contact with the work floor and the horizontal frame when the handrail frame is erected and when the handrail frame is rotated on its vertical surface. Therefore, it is preferable to consider the shape and installation location. As described above, as a solution for avoiding contact with the work floor, the handrail frame can be pushed out to the outside of the outer surface position of the edge of the work floor via the rotation axis of the handrail frame. .

  Temporary receiving metal fittings 85 (see FIG. 9) for temporarily placing the handrail frame may be provided on the uppermost horizontal frame or work floor frame and at the side of the corner of the work floor. . This is because the handrail frame can be temporarily placed before the handrail frame is fixed to the handrail frame upper fixing bracket when the handrail frame is erected on the edge of the work floor. . Moreover, it becomes a temporary storage place of the handrail frame when the handrail frame is pushed out to the outside of the outer surface position of the edge of the work floor via the rotation axis of the handrail frame. Furthermore, it also functions as a positioning bracket when the handrail frame is rotated by about 180 ° in the vertical plane from the state where it is stored horizontally on the elevating type moving scaffold body and pulled through the rotating shaft.

  In addition, the uppermost horizontal frame or work floor frame has a stopper 86 (for preventing the handrail frame from rotating too much when the handrail frame standing upright is rotated downward on its vertical surface. 9) may be provided at a lower position on the side of the corner of the work floor. Since the stopper hits the handrail column of the handrail frame when the standing handrail frame is rotated downward by about 180 °, it also functions as a metal fitting that determines the position where the handrail frame is fixed below.

  The handrail frame can be rotated when the rotating shaft or fitting hole is fitted into the rotating cylinder or the hole, and the stopper is provided on each edge of the work floor, but the handrail frame upper fixing bracket is not yet fastened. It is in a state. Accordingly, when the hand is unexpectedly released from the handrail frame, the handrail frame may rotate vigorously. If the stopper is installed, the handrail frame stops rotating, but the handrail frame may collide with the stopper violently. As a result, the work table installed at the uppermost stage of the lifting and lowering type moving scaffold jumps up due to an impact, and there is a possibility that the worker will stumble and fall. In the case of a structure in which the handrail frame is pushed out to the outside of the outer surface position of the edge of the work floor via the rotation axis of the handrail frame, the handrail frame upper fixing bracket provided in the vicinity of the end portion of the handrail frame is released. There is a similar problem because the handrail frame may protrude to the outside of the outer surface position of the edge of the work floor, and the handrail frame may be rotatable.

  For this reason, it is preferable that the planar handrail frame is rotated slowly by frictional force when rotating downward or upward in the vertical plane. For example, when a compression coil spring is installed on the rotating shaft, the handrail frame is pressed against the anti-detachment fitting at the tip of the rotating shaft by the frictional force, and thus a force is generated on the handrail frame to stop the rotation to some extent. Therefore, it is possible to suppress the handrail frame from rotating vigorously. As a result, the handrail frame can be prevented from colliding violently with the stopper.

  Further, when the planar handrail frame is rotated downward or upward in the vertical plane, the planar handrail frame may be temporarily held at an angle during rotation. For example, if a torsion coil spring is installed on the rotating shaft, one side is fixed to the handrail frame, and the opposite side is fixed to the work floor side, the handrail frame rotates to some extent even if the handrail frame is released unexpectedly, Since it stops in the middle of rotation and is held at a certain angle (for example, 90 °), it is possible to prevent the handrail frame from colliding violently with the stopper. The handrail frame that stops in the middle of rotation needs to be further rotated to a predetermined storage position or standing position, but the worker can rotate by holding the handrail column of the handrail frame, and the rotation angle is also small. Rotating operation of the handrail frame becomes easy.

  As a means for preventing the handrail frame from colliding violently with the stopper, a protrusion such as a handle may be provided below the handrail frame. For example, the handle can be formed by extending the lower end of the handrail column of the handrail frame. The operator can slowly rotate the handrail frame by grasping the protrusions when rotating the handrail frame, so that the handrail frame can be prevented from rotating vigorously.

  (G) The handrail frame installed at the edge of the work floor has been described above, but the handrail installed at the end of the work floor may be placed between the handrail columns of the opposite handrail frame as necessary. One or a plurality of handrail bars may be attached horizontally or diagonally. At this time, a handrail is formed on the four sides of the work table by two handrail frames and one or a plurality of handrail bars. Here, the handrail bar attached horizontally can serve as a door for raising and lowering the worker to the trap.

  Instead of mounting the handrail bar between the handrail columns of the handrail frame facing each other, a handrail member that can rotate about the axis of the handrail column of the handrail frame is stored in the same plane as the handrail frame, and the flat handrail frame is If the handrail member housed in the handrail frame is rotated 90 ° laterally and pulled out and fastened to the handrail pillar of the opposite handrail frame while standing and fixed on the edge of the work floor, the end of the work floor It can be a handrail of the part. At this time, handrails are formed on the four sides of the work table. Here, the handrail member pulled out can serve as a door for raising and lowering the worker to the trap.

  The lifting and lowering movable scaffolding provided with a stowable handrail frame according to the present invention has been completed based on these findings, and the present invention is summarized as the following lifting and lowering movable scaffolding (1) to (12). And

  (1) A rectangular base frame that has wheels on the ground contact surface and can be moved and fixed in place, a multi-stage horizontal frame that can be stretched and stacked via a slider crank, and an elevating type that sequentially includes a work floor It is a moving scaffold, and it is possible to vertically fix and fix a planar handrail frame vertically to each edge of the work floor, and through a substantially central portion of the lower frame of the handrail frame A lifting and lowering type moving scaffold characterized in that a handrail frame is rotatable in a vertical plane with a horizontal axis perpendicular to the handrail frame as a rotation axis.

  (2) A rectangular base frame that has wheels on the ground surface and can be moved and fixed in place, a multi-stage horizontal frame that is stretchably stacked via a slider crank, a work floor frame, and a work floor The planar handrail frame can be vertically erected and fixed to each of the edges of the work floor, and the lower frame of the erected handrail frame. A lifting and lowering type moving scaffold characterized in that a handrail frame can be rotated in a vertical plane with a horizontal axis passing through a central portion and perpendicular to the handrail frame as a rotation axis.

  (3) The above-mentioned (1) or (2) is characterized in that the entire handrail frame can be placed horizontally on the horizontal frame by rotating the planar handrail frame downward by about 180 ° within the vertical plane. Lifting type moving scaffold.

  (4) The lifting and lowering movable scaffold according to (3) above, further comprising a handrail frame lower fixing bracket for fixing the planar handrail frame in a state of being rotated about 180 ° downward in the vertical plane.

  (5) A flat handrail frame standing upright with respect to the work floor stores the handrail material that doubles as the lifting door at the end of the work floor in a state where it can be pulled out by rotation. The lifting / moving scaffold according to any one of (1) to (4) above.

  (6) The lifting and lowering movable scaffold according to any one of (1) to (5) above, comprising a handrail frame upper fixing bracket for fixing the handrail frame in a state of standing on the edge of the work floor. .

  (7) Any of the above (1) to (6), wherein contact with the work floor and the horizontal frame can be avoided when the planar handrail frame is rotated downward or upward in the vertical plane. Elevating mobile scaffolding.

  (8) When the flat handrail frame is rotated downward or upward in the vertical plane, the handrail frame is pushed out of the edge of the work floor and the horizontal frame to avoid contact with the work floor and the horizontal frame. The lifting / moving scaffold according to (7) above, characterized in that a mechanism capable of moving is provided.

  (9) The liftable moving scaffold according to any one of (1) to (8) above, wherein when the planar handrail frame is rotated downward or upward in the vertical plane, it is slowly rotated by frictional force. .

  (10) The liftable moving scaffold according to (9) above, wherein a frictional force generated by a compression coil spring is used.

  (11) When the planar handrail frame is rotated downward or upward in the vertical plane, the planar handrail frame can be temporarily held at an angle during rotation, the above (1) to ( 10) Lifting / moving scaffolding.

  (12) The liftable moving scaffold according to (11) above, wherein a torsion coil spring is used.

  The liftable moving scaffold according to the present invention does not require removal of the handrail from the workbench after work, and provides a liftable moving scaffold excellent in workability and safety. Moreover, since the elevating type moving scaffold according to the present invention is compact without removing the handrail from the work table, the occupied space during transportation and storage can be reduced. The occupied space during transportation and storage can be made compact.

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 right side view. The state which folded the raising / lowering type mobile scaffold of FIG. 1 to the orthogonal | vertical direction is shown. (a) is a front view, (b) is a right side view. It is another 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 right side view. The embodiment at the time of the operation | work when the handrail frame disclosed by patent document 2 is attached as a handrail of the raising / lowering type mobile scaffold shown by FIG. 3 is shown. (a) is a front view, (b) is a right side view. It is explanatory drawing (right side view) which shows the procedure which stores a handrail frame sideways in the raising / lowering type mobile scaffold of FIG. It is explanatory drawing (right side view) which shows the procedure which erects a handrail frame in the raising / lowering type scaffold of FIG. It is a painting work figure (right side view) in the wall surface of the high place on the work bench | platform of the raising / lowering type scaffold of FIG. FIG. 5 is a diagram (a right side view) in which an operator tries to reversely rotate the handrail frame from the work table of the lifting / moving scaffold of FIG. 4. The elevating type moving scaffold (this invention) which attaches the planar handrail frame which can rotate within a vertical surface is shown. (a) is a front view, (b) is a right side view. It is explanatory drawing (front view) which shows the procedure in which a handrail frame rotates and stores sideways in the raising / lowering type mobile scaffold of FIG. (a) shows the preparation before the handrail frame is rotated, (b) shows the middle of the handrail frame rotation, and (c) shows the end of the handrail frame rotation. FIG. 10 is an enlarged view (right side view) of the vicinity of the rotation axis of the handrail frame in FIG. This is an example in which the lower frame of the handrail frame is provided at a level above the edge of the work floor. It is a figure which shows an example of the raising / lowering type moving scaffold which concerns on this invention. (a) is a front view, (b) is a right side view, and (c) is a top view. It is the enlarged view (right view) of the A section of FIG.12 (b), and has shown the standing structure and rotating shaft of the handrail frame. FIG. 13A shows a state when the handrail frame is erected and fixed to the edge of the work floor, and FIG. 13B shows a state immediately before the handrail frame is rotated. It is an enlarged view (front view) of the B section of Fig.12 (a), and the structure of the handrail frame upper fixing bracket for fixing the handrail frame to the edge of the work floor and the handrail frame is fixed by the handrail frame upper fixing bracket. The procedure to do is shown. The procedure which cancels | releases the handrail frame upper fixture of the handrail frame standingly fixed is shown. (a) is the handrail fixing state, (b) is the removal work of the retaining pin, (c) is the lifting work of the upper bracket for the handrail frame, and (d) is the insertion work of the retaining pin. Show. In the lifting / moving scaffold (example of the present invention) shown in FIG. 12, in the procedure of rotating the planar handrail frame 66 in the vertical plane and placing it sideways on the lifting / lowering scaffold main body 202a, the handrail frame is used and rotated. It is explanatory drawing (a front view and a right view) which shows the time of a previous preparation. FIG. 12 shows the middle of rotation of the handrail frame in the procedure of rotating the flat handrail frame 66 within the vertical plane and storing it sideways on the liftable mobile scaffold main body 202a in the liftable moving scaffold (example of the present invention) of FIG. It is explanatory drawing (a front view and a right view). In the lifting / moving scaffold (example of the present invention) in FIG. 12, in the procedure for rotating the planar handrail frame 66 in the vertical plane and placing it sideways on the lifting / lowering scaffold main body 202 a, this is shown when the handrail frame has finished rotating. It is explanatory drawing (a front view and a right view). It is a figure (front view) which shows the installation location of a handrail frame downward fixing bracket. It is an enlarged view (a front view and a left view) of a handrail frame lower fixing metal fitting. (a) and (b) are a front view and a left side view when the lower handrail frame fixing bracket is fixed, and (c) and (d) are a front view and a left side view when released. It is a figure which shows the other example of the raising / lowering type moving scaffold which concerns on this invention. (a) is a front view, (b) is a right side view, and (c) is a top view. It is the rotating shaft 68 of FIG.21 (b), and the enlarged view (right side view) of the vicinity, and has shown the standing position of the handrail frame, and the structure of a rotating shaft. FIG. 22 is an enlarged view of the handrail frame upper fixing bracket 83 of FIG. 21A, showing a procedure for attaching each part of the handrail frame upper fixing bracket 83. (a) is a front view, (b) is a right side view. The state when the handrail frame is fixed by the handrail frame upper fixing bracket 83 based on the procedure shown in FIG. 23 is shown. (a) is a front view, (b) is a right side view, and (c) is an AA line top view of (b). The procedure which cancels | releases the handrail frame upper fixture of the handrail frame standingly fixed is shown. (a) is a front view, (b) is a right side view. FIG. 26 shows a state where the handrail frame upper fixing bracket is released based on the procedure shown in FIG. 25 and the handrail frame can be rotated. (a) is a front view, (b) is a right side view, and (c) is an AA line top view of (b). Four modified examples (invention) in which the rotation axis of the handrail frame is located below the center of the lower frame are shown. Both are front views. This is an example in which the rotation axis of the handrail frame is provided at the same height level as the edge of the work floor. It is an enlarged view (right side view) of the vicinity of the rotation axis of the handrail frame. This is an example in which the rotation axis of the handrail frame is provided at a level below the edge of the work floor. It is an enlarged view (right side view) of the vicinity of the rotation axis of the handrail frame. The other example in which the lower frame of a handrail frame is provided in the level above the edge of a work floor is shown. It is an enlarged view (right side view) of the vicinity of the rotation axis of the handrail frame. An example in which a compression coil spring is used around the rotation axis is shown. (a) is an enlarged view (right side view) of the vicinity of the rotating shaft when the handrail frame is vertically fixed (b), and (b) is an enlarged view (right side view) of the vicinity of the rotating shaft after the handrail frame protrudes. (c) shows an enlarged overall view of a torsion coil spring. An example in which a torsion coil spring is used around the rotation axis is shown. (a) is an enlarged view (right side view) of the vicinity of the rotation axis of the handrail frame, and (b) is an enlarged overall view of the torsion coil spring. The rotation mode (front view) of the handrail frame when a torsion coil spring is used around the rotation axis is shown. The rotation aspect of the handrail frame which formed the handle 61 by extending the lower end of the handrail column of a handrail frame is shown (front view).

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

(1) Invention Example 1
(1-1) Overall Configuration of Elevating Type Mobile Scaffold FIG. 12 is a diagram showing an example of the elevating type moving scaffold according to the present invention. (a) is a front view, (b) is a right side view, and (c) is a top view.

  This liftable moving scaffold 202 shows a state when all four X-shaped slider cranks 50 are folded in a fixed state.

  The lifting / moving scaffold 202 includes a rectangular base frame 5 that has wheels 6 on the ground contact surface and can be moved and fixed to a predetermined location, and a horizontal frame that can be raised and lowered in four stages. Pipe-shaped 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 of the base frame 5 and is installed so as to be able to rotate in the horizontal direction around each column 7 of the base frame 5 as an axis. Yes. The liftable moving scaffold is moved by releasing the brake lock of the wheel 6 and pushing the liftable moving scaffold 202 in the horizontal direction while lifting the jack base 75. This movement is usually made with the horizontal frame folded in the vertical direction. 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.

  On the rectangular base frame 5, four steps of a rectangular horizontal frame that can be moved up and down are provided at intervals, and two diagonal members are crossed and axially attached between the frames. X-shaped slider cranks 50 are vertically arranged in two rows. Here, the base frame 5 also serves as the lowermost horizontal frame, but a lowermost horizontal frame may be provided separately from the base frame 5. When a lowermost horizontal frame 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 removed from the base frame when moving and transporting the lifting and lowering moving scaffold, so that the work becomes easier and the space can be used effectively for storage. it can.

  The uppermost horizontal frame 40 also serves as a work floor frame. On the uppermost horizontal frame 40, a work floor 56 made of a mesh-like plate is stretched, and a flat handrail frame 66 is a work floor. A work table 60 is formed standing on the edge portion 56a. Here, the uppermost horizontal frame 40 also serves as a work floor frame, but a work floor frame may be provided separately from the uppermost horizontal frame 40.

  The handrail frame 66 of the liftable moving scaffold is formed in a planar shape from two handrail pillars 62 and two handrail bars 63 that horizontally connect the handrail pillars 62, and the baseboard 64 is formed by the handrail frame 66. It is attached as a lower frame. In addition, you may provide horizontally the pipe or bar which connects the lower part of the two handrail pillars 62 at right angle instead of a baseboard as a lower frame of a handrail frame.

  Two planar handrail frames 66 are erected perpendicularly to the respective edge portions 56a of the work floor, and are fixed by handrail frame upper fixing fittings 83, respectively. Here, provisional metal fittings 85 for temporarily placing the handrail frame when the handrail frame is erected are provided outside the corner of the work floor. Further, each handrail frame 66 accommodates a handrail member 65 in the same plane. The handrail member 65 accommodated in the handrail frame 66 can be pulled out after being rotated by 90 ° in the lateral direction, and then held on the handrail column 62 of the facing handrail frame 66. When the handrail member 65 is pulled out, in addition to serving as a handrail, the handrail member 65 serves as a lift door for the worker.

  In this way, after the flat handrail frame 66 is fixed upright on each of the edges 56 of the work floor, the X-shaped slider crank 50 of each stage is extended to perform the work of extending the uppermost horizontal frame 40. After raising to a predetermined height and fixing it, the worker climbs the column between the frames that also serve as lifting traps and goes up to the work table 60 to perform work such as interior and exterior work.

  Then, after finishing the interior and exterior work, the folding movable scaffold 202 can be returned to the state shown in FIG. 12 by folding the X-shaped slider crank 50 at each stage.

  The handrail frame 66 can be rotated in a vertical plane with a horizontal axis passing through a substantially central portion of the lower frame and perpendicular to the handrail frame as a rotation axis 68.

  By rotating the handrail frame by about 180 ° within the vertical plane, the handrail frame can be placed side by side on the elevating movable scaffolding body 202a and stored. The rotary shaft 68 is located at the center of the baseboard 64 that forms the lower frame of the handrail frame 66. The rotary shaft 68 is installed in a horizontal direction via a support fitting 45 attached to the center of each edge portion 56a of the work floor. Here, the level of the rotary shaft 68 is slightly higher than the level of the work floor. It is in. Here, a stopper 86 is provided on the outside and below the corner of the work floor so that the handrail frame 66 does not rotate too much beyond 180 °.

  Then, after finishing the interior and exterior construction work, during transportation and storage, the handrail frame is rotated by about 180 ° after the folding operation of the X-shaped slider crank 50 at each stage, thereby raising and lowering the movable scaffolding body 202a. Can be stored side by side.

(1-2) Standing structure and rotating shaft of handrail frame FIG. 13 is an enlarged view (right side view) of part A in FIG. 12 (b), showing the standing structure and rotating shaft of the handrail frame. Yes. FIG. 13 (a) shows the state when the handrail frame is erected and fixed to the edge of the work floor, and FIG. 13 (b) shows the state immediately before the handrail frame is rotated within its vertical plane.

  A rotating shaft 68 is provided horizontally via a support fitting 45 attached to the upper surface of the edge of the work floor 56. On the other hand, a skirting board 64 serving as a lower frame of the handrail frame is provided with a rotating cylinder 94 fitted to the rotating shaft 68. Then, the rotary cylinder 94 of the baseboard 64 is fitted to the rotary shaft 68, and is prevented from being detached by a removal prevention fitting 95. When the handrail is used for work on the work table, the handrail frame erected is fixed to the upper surface of the edge portion of the work floor 56 by the handrail frame upper fixing bracket 83 (see FIG. 12).

  In the state of FIG. 13 (a), the baseboard 64, which is the lower frame of the handrail frame, is located inside the outer surface position of the edge portion of the work floor 56. Therefore, the handrail erected on the edge portion 56 of the work floor. Even if the handrail frame upper fixing bracket 83 is released, the frame cannot be rotated in the vertical plane as it is because the edge of the work floor gets in the way. However, since the lower frame of the handrail frame 66 can move to the right on the rotation shaft 68, the lower frame of the handrail frame 66 is as shown in FIG. In addition, the handrail frame can be pushed outward from the outer surface position of the edge of the work floor. As a result, the handrail frame can be rotated in the vertical plane.

(1-3) About the fixing mechanism at the time of standing of a handrail frame A handrail frame upper fixing bracket can be provided in order to firmly fix the handrail frame standing on the edge of the work floor at that position. Since the work floor is stretched on the uppermost horizontal frame or work floor frame, in order to fix the handrail frame standing on the edge of the work floor, the work floor may be fixed to this frame. The following is an example of a handrail frame upper fixing bracket.

  FIG. 14 is an enlarged view (front view) of part B of FIG. 12 (a), and shows the structure of the handrail frame upper fixing bracket for fixing the handrail frame to the edge of the work floor and the handrail frame upper fixing bracket. The procedure which fixes a handrail frame is shown. FIG. 14A shows a procedure for attaching the handrail frame upper fixing bracket to the edge of the work floor, and FIG. 14B shows a state when the handrail frame is fixed by the handrail frame upper fixing bracket.

  The handrail frame upper fixing bracket 83 includes a lower fixing pipe 83a welded in the vertical direction to a side surface in the vicinity of the corner of the uppermost horizontal frame 40 on which the work floor is stretched, and a baseboard serving as a lower frame of the handrail frame 66. The upper fixed pipe 83b is welded in the vertical direction to the side surface in the vicinity of the end portion 64, and the inner fixed pipe 83c has an outer diameter that can be fitted into both the upper and lower fixed pipes. The lower fixed pipe 83a and the upper fixed pipe 83b have the same inner and outer diameters, and a through hole 83d, a middle part of the lower fixed pipe 83a, an upper part of the upper fixed pipe 83b, and a lower part of the insertion fixed pipe 89c are respectively provided. 83e and 83f are formed.

  As shown in FIG. 14 (a), the lower fixed pipe 83a and the upper fixed pipe 83b are designed to be positioned on the same vertical line when the handrail frame is erected on the edge of the work floor. Therefore, after the handrail frame is erected on the edge of the work floor, the handrail frame is inserted from above by inserting the insertion fixing tube 83c having a length sufficient to fit in both the lower fixing tube 83a and the upper fixing tube 83b. Is fixed in a standing state. After that, by inserting a single retaining pin 83g into both the lower fixing pipe through hole 83d and the insertion fixing pipe through hole 83f, as shown in FIG. It is firmly fixed in the state.

  FIG. 15 shows a procedure for releasing the handrail frame upper fixing bracket of the handrail frame fixed upright. (a) shows the handrail fixing state, (b) shows the removal work of the retaining pin, (c) shows the lifting work of the internal fixing tube, and (d) shows the work of inserting the retaining pin. .

  In the handrail fixing state shown in FIG. 15 (a), the baseboard serving as the lower frame of the handrail frame 66 is directly above the lower fixed pipe 83a attached in the vertical direction to the side surface near the corner of the uppermost horizontal frame 40. An upper fixed tube 83b welded to the side surface in the vicinity of the end of 64 is positioned in the vertical direction, and an insertion fixed tube 83c having an outer diameter that can be fitted into both the upper and lower fixed tubes is Is interpolated from. Further, by inserting a single retaining pin 83g into both the through hole of the lower fixed tube and the through hole of the insertion fixed tube, the handrail frame is firmly fixed in a state of standing on the edge.

  By removing the retaining pin shown in FIG. 15B, the insertion fixing tube 83c can be lifted upward.

  Then, by the lifting operation of the insertion / fixation tube 83c shown in FIG. 15 (c), the insertion / fixation tube 83c is lifted upward and is fitted into only the upper fixation tube 83b. However, the insertion fixing tube 83c is in a state where it can be moved up and down as it is.

  Finally, the insertion fixing tube 83c remains lifted upward by the insertion operation of the retaining pin 83g shown in FIG. 15 (d). Therefore, the fixation of the handrail frame 66 is completely released, and the handrail frame 66 can be rotated downward within the vertical plane.

(1-4) About the procedure of the downward rotation in the vertical plane of the handrail frame erected The handrail frame erected on the edge of the work floor passes through the substantially center part of the lower frame and is relative to the handrail frame. A horizontal axis that forms a right angle can be rotated on the vertical plane as a rotation axis 68. In the handrail frame 66, the rotation shaft 68 is located at a substantially central portion of the baseboard 64 constituting the lower frame. Moreover, the rotating shaft 68 is horizontally installed in the substantially center part of each edge part 56a in a work floor.

  FIGS. 16 to 18 show the procedure for rotating the planar handrail frame 66 in the vertical plane and placing it sideways on the elevating movable scaffolding body 202a in the elevating movable scaffolding (example of the present invention) of FIG. It is a figure (a front view (a) and a right view (b)). FIG. 16 shows the preparation before rotation of the handrail frame, FIG. 17 shows the middle of the rotation of the handrail frame, and FIG. 18 shows the end of the rotation of the handrail frame. In each of the front views (a), only the front handrail frame 66a is displayed, and the rear handrail frame 66b is not shown.

  In FIG. 16, two handrail frames 66 a and 66 b are erected on each of the edges 56 of the work floor, fixed by handrail frame upper fixing brackets 83, and fastened to the opposite handrail pillar 62. The handrail members 65 are liftable moving scaffolds stored in the planes of the handrail frames 66a and 66b, respectively. Initially, the lower frames 64 of the two handrail frames are both located immediately above the edge 56a of the work floor.

  Thereafter, of the two handrail frames, the handrail frame upper fixing bracket 83 of one handrail frame 66a is pulled up to release the fixation of one handrail frame 66a, and then the lower frame 64 of the handrail frame is moved outward. Also shown is a state in which the handrail frame 66a is pushed outward from the outer surface position of the edge of the work floor.

  Next, FIG. 17 shows a state in the middle of rotating the handrail frame 66a in a state of being pushed outward from the outer surface position of the edge of the work floor in the downward direction around the rotation axis 68 in the vertical plane. .

  Finally, FIG. 18 shows that when the handrail frame 66a continues to rotate and the handrail frame 66a is rotated by about 180 °, the handrail frame 66a is stored sideways on the front side of the liftable moving scaffold main body 202a. ing.

  When the same operation is performed on the other handrail frame 66b, the handrail frames 66a and 66b are both placed and stored on the back side of the liftable moving scaffold main body 202a. Therefore, since the liftable moving scaffold is compact, the occupied space during transportation and storage can be reduced.

(1-5) Lifting and moving type of handrail frame About the fixing mechanism when placed sideways on the scaffolding body As described above, the handrail frame is moved up and down after rotating the flat handrail frame downward by about 180 ° within the vertical plane. It can be stored sideways on the scaffold body. At this time, a handrail frame lower fixing bracket may be provided to fix the handrail frame in this state.

  Also in the elevating type moving scaffold according to the first embodiment of the present invention, a handrail frame lower fixing bracket can be provided. At this time, the flat handrail frame can be rotated about 180 ° downward in the vertical plane and placed sideways on the lifting type movable scaffolding body, and then securely fixed in that state.

  19 and 20 show a handrail frame lower fixing bracket for fixing the handrail frame in a state in which the handrail frame is rotated 180 ° downward and then laid down and stored on the lifting movable scaffolding main body. FIG. 19 is a diagram (front view) showing an installation location on the lifting and lowering moving scaffold, and FIG. 20 is an enlarged view (front view and left side view). 20 (a) and 20 (b) are a front view and a left side view when the handrail frame lower fixing bracket is fixed, and FIGS. 20 (c) and 20 (d) are a front view and a left side view when released.

  The handrail frame lower fixing metal fitting 84 is pivotally attached between the two fixing plates 84a and the two fixing plates 84a which are vertically welded on the base frame 5 with a space therebetween, and is rotated 90 ° around the axis. It consists of a movable opening / closing plate 84b. When the open / close plate 84b is placed vertically, the open / close plate 84b is opened, and when the open / close plate 84b is tilted sideways, it stops at the handrail column 62 of the handrail frame 66, so that the handrail column 66 stops further rotating. The frame 66 is fixed downward.

(2) Invention Example 2
FIG. 21 is a diagram showing another example of the liftable moving scaffold according to the present invention. (a) is a front view, (b) is a right side view, and (c) is a top view.

  The entire structure of the lifting / lowering moving scaffold 202 is basically the same as that of the first example of the present invention (FIG. 12). The difference from Example 1 of the present invention is that when the handrail frame standing on the edge of the work floor rotates downward in the vertical plane, the handrail frame is pushed outward from the outer surface position of the edge of the work floor. It is a point that can be rotated. Due to this, the installation position and structure of the handrail frame upper fixing bracket are also different from those of the first example of the present invention. The rest is the same as the entire structure of the lifting and lowering scaffold according to Example 1 of the present invention (FIG. 12), so the description of FIG. 21 is omitted.

  Therefore, the difference between the present invention example 2 and the present invention example 1, that is, the standing position of the handrail frame and the structure of the rotating shaft, and the structure of the handrail frame upper fixing bracket will be described.

  FIG. 22 is an enlarged view (right side view) of the rotating shaft 68 and its vicinity in FIG. 21B, and shows the standing position of the handrail frame and the structure of the rotating shaft.

  A rotating shaft 68 is provided horizontally via a support fitting 45 attached to the upper surface of the edge of the work floor 56. On the other hand, a skirting board 64 serving as a lower frame of the handrail frame is provided with a rotating cylinder 94 fitted to the rotating shaft 68. Then, the rotary cylinder 94 of the baseboard 64 is fitted to the rotary shaft 68, and is prevented from being detached by a removal prevention fitting 95. When the handrail is used for work on the work table, the handrail frame erected is fixed to the upper surface of the edge portion of the work floor 56 by the handrail frame upper fixing bracket 83 (see FIG. 21).

  Since the baseboard 64 serving as the lower frame of the handrail frame is located outside the outer surface position of the edge of the work floor 56, the handrail frame standing on the edge 56 of the work floor is the handrail frame upper fixing bracket 83. If is released, it is possible to rotate within the vertical plane.

  FIG. 23 is an enlarged view of the handrail frame upper fixing bracket 83 of FIG. 21A, and shows a procedure for attaching each part of the handrail frame upper fixing bracket 83. FIG. 21A is a front view, and FIG. 21B is a right side view.

  The handrail frame upper fixing bracket 83 includes a lower fixing pipe 83a welded in a vertical direction to a side surface in the vicinity of the corner of the uppermost horizontal frame 40 on which the work floor is stretched, and a lowermost portion of the handrail column 62 of the handrail frame. An insertion-fixed parallel tube 83h composed of two parallel tubes having an outer diameter that can be fitted into each of the upper fixed tube 83b and the lower fixed tube 83a and the upper fixed tube 83b that are welded in the vertical direction to the outer surface. It consists of. The lower fixed tube 83a and the upper fixed tube 83b have the same inner and outer diameters, and through holes 83d and 83e are formed in the middle of the lower fixed tube 83a and the upper portion of the upper fixed tube 83b, respectively. The insertion-fixed parallel tube 83h includes two tubes (long tube 83i and short tube 83j) having different lengths connected in parallel via a joint 83k. The interval between the parallel tubes in the insertion-fixed parallel tube 83h is designed to be equal to the horizontal distance between the lower fixed tube 83a and the upper fixed tube 83b when the handrail frame is erected on the edge of the work floor. Of the parallel pipes of the insertion fixing pipe 89c, a through hole 83f is formed in the lower part of the long pipe 83i.

  In this handrail frame upper fixing bracket 83, the upper fixing pipe 83b is welded in the vertical direction to the edge 56a of the work floor stretched on the uppermost horizontal frame 40 to which the lower fixing pipe 83a is welded in the vertical direction. After the handrail frame is erected, one long tube 83i of the insertion fixed parallel tubes 83h is inserted into the lower fixed tube 83a, and the other short tube 83j is inserted into the upper fixed tube 83b. Thus, the handrail frame is fixed in an upright state. Thereafter, a single retaining pin 83g is inserted into both the through hole 83d of the lower fixing tube and the through hole 83f of the long tube 83i of the insertion fixing tube.

  FIG. 24 shows a state when the handrail frame is fixed by the handrail frame upper fixing bracket 83 based on the procedure shown in FIG. (a) is a front view, (b) is a right side view, and (c) is an AA line top view of (b).

  The handrail frame 66 is composed of the lower fixed tube 83a welded to the uppermost horizontal frame 40 and the upper fixed tube 83b welded to the handrail column 62 of the handrail frame 66 by the above-described procedure. Two pipes having different lengths (the long pipe 83i and the short pipe 83j) are simultaneously inserted from above, and both the through hole 83d of the lower fixing pipe and the through hole 83f of the long pipe 83i of the insertion fixing pipe are both inserted. By inserting a single retaining pin 83g into the work floor 56, it is firmly fixed in a state where it is erected on the edge of the work floor 56.

  FIG. 25 shows a procedure for releasing the handrail frame upper fixing bracket of the handrail frame fixed upright. FIG. 25 (a) is a front view, and FIG. 25 (b) is a right side view.

  In the initial state of fixing the handrail, two of the lower fixed tube 83a welded to the uppermost horizontal frame 40 and the upper fixed tube 83b welded to the handrail column 62 of the handrail frame 66 are inserted and fixed parallel tubes 83h. Pipes having different lengths (long pipe 83i and short pipe 83j) are inserted from above at the same time, and are further inserted into both the through hole 83d of the lower fixing pipe and the through hole 83f of the long pipe 83i of the insertion fixing pipe. A single retaining pin 83g is inserted and firmly fixed in an upright state at the edge of the work floor 56.

  First, after the retaining pin 83g is removed, the insertion fixing parallel tube 83h is lifted upward by the lifting operation of the insertion fixing parallel tube 83h, and the long tube 83i is detached from the lower fixing tube 83a. The pipe 83j is fitted into the upper fixed pipe 83b. At this time, the handrail frame 66 is released from being fixed.

  Since the insertion-fixing parallel tube 83h is movable as it is, the insertion-fixing parallel tube 83h is held at the position lifted upward by inserting the retaining pin 83g at this position. Can do. Next, when the long tube 83j is rotated 90 ° to the left as viewed from above around the axis of the short tube 83j at this position, the handrail frame 66 is outside the outer surface position of the edge of the work floor 56, so It will be in a state where it can rotate downward in the plane.

  FIG. 26 shows a state in which the handrail frame upper fixing bracket is released and the handrail frame can be rotated based on the procedure shown in FIG. (a) is a front view, (b) is a right side view, and (c) is an AA line top view of (b).

  The insertion-fixed parallel tube 83h is in a position lifted upward, and the long tube 83i is detached from the lower fixed tube 83a, while the short tube 83j is fitted in the upper fixed tube 83b, The frame 66 is outside the outer surface position of the edge of the work floor 56. Therefore, the fixation of the handrail frame 66 is completely released, and the handrail frame 66 can be rotated downward within the vertical plane. Since one retaining pin 83g is inserted into both the through hole of the lower fixed tube and the long tube 83i of the internal fixed tube, the internal parallel tube 83h is rotated when the handrail frame rotates. It will not fall out.

(3) Modifications of the present invention (3-1) Position of the rotation axis in the lower frame of the handrail frame The rotation axis of the handrail frame is located in the center of the lower frame, but is not strictly in the center. It does not need to be located, and may be located in the vicinity thereof. In the following, an example in which the rotation axis of the handrail frame is located away from the center of the lower frame will be described.

  FIG. 27 shows four modified examples (the present invention) in which the axis of rotation of the handrail frame is at a position below the center of the lower frame. Both are front views.

  At the central part of the baseboard 64 constituting the lower frame of the handrail frame, angle irons having different shapes are attached downward, and the shaft 68 of the handrail frame is provided on the angle steel. Thus, by changing the shape of the angle iron and the position of the rotation axis, the position of the rotation axis of the handrail frame can be variously changed.

  FIGS. 27A and 27B are examples in which the uppermost horizontal frame 40 also serves as a work floor frame, and a work floor 56 is stretched on the uppermost horizontal frame 40. On the other hand, FIGS. 27C and 27D are examples in which a work floor frame 43 is provided separately from the uppermost horizontal frame 40, and the work floor is stretched on the work floor frame 43. Yes. In either case, the position of the rotation axis of the handrail frame can be changed variously.

(3-2) About the height position of the rotation axis of the handrail frame The rotation axis of the handrail frame stands upright at the edge of the work floor, but the height position is not necessarily higher than the edge of the work floor. It is not necessary and may be in the vicinity thereof. Below, the example which provided the height position of the rotating shaft of the handrail frame in the same level as the edge part of a work floor, and a lower level is given.

  FIG. 28 is an example in which the axis of rotation of the handrail frame is provided at the same level as the edge of the work floor. It is an enlarged view (right side view) of the vicinity of the rotation axis of the handrail frame.

  A rotary shaft 68 is provided horizontally on the side surface of the edge of the work floor 56, while a base cylinder 64 that is a lower frame of the handrail frame is provided with a rotary cylinder 94 that fits the rotary shaft 68. Then, the rotary cylinder 94 of the baseboard 64 is fitted to the rotary shaft 68, and is prevented from being detached by a removal prevention fitting 95. Since the lower frame of the handrail frame 66 is positioned outside the outer surface position of the edge portion of the work floor 56, the handrail frame erected on the edge portion 56 of the work floor can be rotated in the vertical plane as it is. .

  Next, FIG. 29 is an example in which the rotation axis of the handrail frame is provided at a level below the edge of the work floor. It is an enlarged view (right side view) of the vicinity of the rotation axis of the handrail frame.

  A rotating shaft 68 is provided horizontally via a support fitting 45 attached to the lower surface of the edge of the work floor 56. On the other hand, a skirting board 64 serving as a lower frame of the handrail frame is provided with a rotating cylinder 94 fitted to the rotating shaft 68. Then, the rotary cylinder 94 of the baseboard 64 is fitted to the rotary shaft 68, and is prevented from being detached by a removal prevention fitting 95. Since the lower frame of the handrail frame 66 is positioned outside the outer surface position of the edge portion of the work floor 56, the handrail frame erected on the edge portion 56 of the work floor can be rotated in the vertical plane as it is. .

(3-3) Positional relationship between the rotating shaft and the rotating cylinder An example in which the rotating shaft of the handrail frame is provided at the edge of the work floor and the rotating cylinder is provided on the plate frame of the handrail frame has been given. The relationship may be reversed. Examples are given below.

FIG. 30 shows another example in which the lower frame of the handrail frame is provided at a level above the edge of the work floor. It is an enlarged view (right side view) of the vicinity of the rotation axis of the handrail frame.
The rotating shaft 68 is provided on a baseboard 64 that serves as a lower frame of the handrail frame, and a support fitting 46 that also serves as a rotating cylinder is attached to the upper surface of the edge of the work floor 56. The rotating shaft 68 provided on the baseboard 64 is fitted into the rotating cylinder of the support metal fitting 46, and is prevented from coming off by a removal prevention metal fitting 95. Since the lower frame of the handrail frame 66 is positioned outside the outer surface position of the edge portion of the work floor 56, the handrail frame erected on the edge portion 56 of the work floor can be rotated in the vertical plane as it is. .

(3-4) Example in which compression coil spring is used for rotation axis of handrail frame When rotating a planar handrail frame downward or upward in a vertical plane, it is preferable to rotate it slowly by frictional force. When the compression coil spring is installed on the rotation shaft, it is possible to suppress the handrail frame from rotating vigorously.

  FIG. 31 shows an example in which a compression coil spring is used around the rotation axis. 31 (a) is an enlarged view (right side view) of the vicinity of the rotating shaft when the handrail frame is fixed upright, and FIG. 31 (b) is an enlarged view (right side view) of the vicinity of the rotating shaft after the handrail frame protrudes. Figure). FIG. 31 (c) shows an enlarged overall view of the torsion coil spring.

  In FIG. 31 (a), a rotating shaft 68 is provided horizontally via a support fitting 45 attached to the upper surface of the edge of the work floor 56. On the other hand, a skirting board 64 serving as a lower frame of the handrail frame is provided with a rotating cylinder 94 fitted to the rotating shaft 68. Around the rotation shaft 68, a compression coil spring 96 is installed on the work floor side of the baseboard 64 that is the lower frame of the handrail frame, and the rotary cylinder 94 of the baseboard 64 is fitted to the rotation shaft 68. In addition, the stoppers 95 are provided with stoppers 95 to prevent them from coming off. The standing handrail frame is fixed to the upper surface of the edge of the work floor 56 by a handrail frame upper fixing bracket (not shown). Even if the handrail frame upper fixing bracket is released, the handrail frame erected on the edge portion 56 of the work floor cannot be rotated within the vertical plane as it is because the edge of the work floor interferes.

  FIG. 31B shows a state in which the handrail frame upper fixing bracket is released and the lower frame of the handrail frame 66 is pushed outward. Since the handrail frame is located outside the outer surface position of the edge of the work floor, the handrail frame can be rotated within the vertical plane.

  In this example, since the compression coil spring is installed on the rotating shaft 68, the handrail frame can be rotated slowly. Because the frictional force causes the handrail frame to be pressed against the metal fitting at the tip of the rotating shaft, a force is generated on the handrail frame to stop the rotation to some extent, so that the handrail frame is prevented from rotating vigorously. be able to. As a result, the handrail frame can be prevented from colliding violently with the liftable moving scaffold body.

(3-5) Example of using a torsion coil spring as a rotation axis of a handrail frame When a planar handrail frame is rotated downward or upward in a vertical plane, the planar handrail frame is rotated at an angle during rotation. It is preferable to be able to retain it once. If a torsion coil spring is installed on the rotating shaft, it can be held at a constant angle during rotation.

  FIG. 32 shows an example in which a torsion coil spring is used around the rotation axis. FIG. 32A is an enlarged view (right side view) of the vicinity of the rotation axis of the handrail frame, and FIG. 32B is an enlarged overall view of the torsion coil spring.

  A rotating shaft is provided horizontally via a support fitting 45 attached to the upper surface of the edge of the work floor 56. On the other hand, a skirting board 64 serving as a lower frame of the handrail frame is provided with a rotating cylinder 94 fitted to the rotating shaft. Then, around the rotation shaft, a torsion coil spring 97 is installed on the work floor side of the baseboard 64 which is the lower frame of the handrail frame, and then the rotary cylinder 94 of the baseboard 64 is fitted to the rotation shaft, The stoppers 95 are used to prevent the disconnection. The torsion coil spring 97 installed around the rotation axis is fixed on one side to the handrail frame and on the opposite side to the work floor side.

  Since the handrail frame that has been erected and fixed on the upper surface of the edge of the work floor 56 is in a state in which the lower frame has protruded to the outside by the release of the handrail frame upper fixing bracket (not shown), the handrail frame Can be rotated in its vertical plane.

  FIG. 33 shows a rotation mode (front view) of the handrail frame when a torsion coil spring is used around the rotation axis.

  Since the torsion coil spring is installed on the rotation shaft, even if the handrail frame is released unexpectedly, the handrail frame 66 rotates to some extent, but stops in the middle of rotation and is held at a certain angle (for example, 90 °). Therefore, it is possible to prevent the handrail frame 66 from colliding violently with the liftable moving scaffold main body 202a. Although the handrail frame stopped in the middle of rotation needs to be further rotated to a predetermined storage position or standing position, the worker 90 can rotate by holding the handrail column of the handrail frame, and the rotation angle is also reduced. Therefore, the handrail frame can be easily rotated.

(3-6) Example in which a handle is provided below the handrail frame As a means for preventing the handrail frame from colliding violently with the liftable moving scaffold main body, a protrusion such as a handle may be provided below the handrail frame. .

  FIG. 34 shows a rotation mode of the handrail frame in which the handle 61 is formed by extending the lower end of the handrail column of the handrail frame (front view).

  Since the operator 90 can slowly rotate the handrail frame 66 by grasping the handle 61 when rotating the handrail frame 66, it is possible to suppress the handrail frame 66 from rotating vigorously.

  ADVANTAGE OF THE INVENTION According to this invention, it is not necessary to remove a handrail from a work bench after work, and the descending type mobile scaffold excellent in the workability | operativity and safety | security can be provided. Moreover, since the elevating type moving scaffold according to the present invention is compact without removing the handrail from the work table, the occupied space during transportation and storage can be reduced. The occupied space during transportation and storage can be made compact.

DESCRIPTION OF SYMBOLS 5 Base frame 6 Wheel with brake lock 7 Base frame support column 40 Horizontal frame 41 Horizontal member of horizontal frame 43 Work floor frame 45 Support metal fitting 46 Support metal fitting also serving as rotating cylinder 50 X-shaped slider crank 51 Pin 52 Fastening 56 Work Floor 56a Edge of work floor 56b End of work floor 60 Work table 61 Handle 62 Handrail pillar 63 Handrail bar 64 Baseboard 65 Handrail member 66 Handrail frame 66a Handrail frame 66b Handrail frame 67 Angle steel 68 Rotating shaft 69 Post between frames (Tall for lifting)
70 Long material of support between frames 71 Cross member of support between frames 75 Jack base 76 Outrigger 83 Handrail frame upper fixing bracket 83a Lower fixing tube 83b Upper fixing tube 83c Insertion fixing tube 83d Lower fixing tube through hole 83e Upper fixing Pipe passage hole 83f Insertion fixing pipe passage hole 83g Retaining pin 83h Insertion fixing parallel pipe 83i Insertion fixation tube long pipe 83j Insertion fixation pipe short pipe 83k Joint material 84 Handrail frame lower fixing bracket 84a Fixation Plate 84b Opening and closing plate 85 Temporary support fitting 86 Stopper 90 Worker 91 Wall surface 92 Safety band 94 Rotating cylinder 95 Detachment prevention fitting 96 Compression coil spring 97 Torsion coil spring 200 Lifting type moving scaffold (conventional example)
201a Lifting type moving scaffold body (conventional example)
202 Lifting type moving scaffold (present invention)
202a Lifting type moving scaffold body (present invention)

Claims (12)

  A lifting platform that includes wheels on the ground surface and can be moved and fixed in place, a multi-stage horizontal frame that can be stretched and stacked via a slider crank, and a work floor. It is possible to vertically fix a flat handrail frame to each of the edges of the work floor, and to pass through the substantially center part of the lower frame of the handrail frame that is erected and to the handrail frame An elevating moving scaffold characterized in that a handrail frame is rotatable in a vertical plane with a horizontal axis perpendicular to the axis as a rotation axis.   A rectangular base frame that has wheels on the ground contact surface and can be moved and fixed to a predetermined place, a plurality of horizontal frames stacked in a stretchable manner via a slider crank, a work floor frame, and a work floor are sequentially provided. It is an elevating type moving scaffold, and it is possible to vertically fix a flat handrail frame vertically on each of the edges of the work floor, and the substantially center portion of the lower frame of the handrail frame that is erected A lifting and lowering moving scaffold characterized in that a handrail frame is rotatable in a vertical plane with a horizontal axis that is perpendicular to the handrail frame as a rotation axis.   The lifting and lowering movable scaffold according to claim 1 or 2, characterized in that the entire handrail frame can be laid on the horizontal frame by rotating the planar handrail frame downward by about 180 ° within the vertical plane. .   The lifting and lowering movable scaffold according to claim 3, further comprising a handrail frame lower fixing bracket for fixing the planar handrail frame in a state of being rotated about 180 ° downward in the vertical plane.   The planar handrail frame standing vertically with respect to the work floor is characterized in that a handrail material that also serves as an elevating door at the end of the work floor is stored in a state where it can be pulled out by rotation. The lifting type moving scaffold according to any one of claims 1 to 4.   6. The liftable moving scaffold according to any one of claims 1 to 5, further comprising a handrail frame upper fixing bracket for fixing the handrail frame in a state of standing on the edge of the work floor.   The lifting type according to any one of claims 1 to 6, wherein contact with the work floor and the horizontal frame can be avoided when the planar handrail frame is rotated downward or upward in the vertical plane. Moving scaffold.   In order to avoid contact with the work floor and the horizontal frame when the flat handrail frame is rotated downward or upward in the vertical plane, the handrail frame can be pushed outside the edge of the work floor and the horizontal frame. The raising / lowering movable scaffold of Claim 7 provided with the mechanism.   9. The liftable moving scaffold according to claim 1, wherein when the planar handrail frame is rotated downward or upward in a vertical plane, it is slowly rotated by a frictional force.   The lifting and lowering movable scaffold according to claim 9, wherein a frictional force generated by a compression coil spring is used.   The planar handrail frame can be temporarily held at an angle during rotation when the planar handrail frame is rotated downward or upward in the vertical plane. Lifting type moving scaffold as described in.   The lifting type mobile scaffold according to claim 11, wherein a torsion coil spring is used.

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