JP2014025326A - Lifting type scaffolding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lifting type scaffolding device capable of reducing a clearance between it and a building as much as possible without requiring troublesome work even if a wall surface of the building is curved, for example.SOLUTION: An inventive lifting type scaffolding device comprises a vertically extending mast 1, a lifting part 8 provided along the mast 1 for free rising/falling, and a scaffolding part 2 provided on a side of the lifting part 8 and rising/falling as the lifting part 8 rises/falls. A scaffolding part rotation mechanism 15 for horizontally rotating the scaffolding part 2 with a specified part of the scaffolding part 2 side end of the lifting part 8 as a fulcrum is provided on a side of the lifting part 8.

Description

  The present invention relates to a lifting and lowering scaffold device that can be used for a temporary scaffolding laid in, for example, a building such as a building, and in particular, a work floor can be moved up and down.

  Conventionally, a temporary scaffold is provided along a building in a building site such as a building or a condominium, for example, and has a work floor for an operator to perform work. In recent years, an elevating type scaffolding device in which a work floor can be moved up and down in the vertical direction has been proposed (see, for example, Patent Document 1).

Japanese Patent No. 2881677

  In other words, as shown in FIG. 11, the lifting and lowering scaffold device includes, for example, a mast 51 erected on the ground G on which a building is erected, and is provided with a lifting unit 52 that can be moved up and down along the mast 51. It has been. A scaffold part 53 having a work floor is connected to the elevating part 52. The scaffold portion 53 is composed of a plurality of frame members (not shown), and is continuously provided so as to extend in the lateral direction.

  Motors 54 and 55 are disposed in the elevating part 52, respectively. The motors 54 and 55 are configured to move the elevating unit 52 up and down along the mast 51 when they are rotationally driven. The motors 54 and 55 are connected to the mast 51 by engaging a pinion (not shown) associated therewith with a rack 56 provided on the mast 51, and the elevating part 52 is driven by rotating the motors 54 and 55. Is raised and lowered. The scaffold portion 53 is lifted and lowered along the wall surface of the building while being substantially leveled by the lifting and lowering portion 52 being lifted and lowered.

  In this lifting and lowering type scaffolding apparatus, as described above, when the building is a building having a flat wall surface such as a normal building or an apartment, the building is moved up and down along the flat wall surface. Therefore, if the lifting and lowering scaffolding device is appropriately arranged, the building and the lifting and lowering scaffolding device have an appropriate distance. Therefore, the operator can stop the scaffold portion 53 at a predetermined height position and perform work well at the height position.

  However, when the building has a curved wall surface, such as a tank, or when the building is substantially cylindrical, such as a chimney, an elevating scaffolding device is installed along the building. Even so, there is a place where there is an unnecessarily large gap between the lifting and lowering scaffold device and the building. Therefore, there is a possibility that the operator may fall during the work from the gap, or the tool or the like may fall.

  Conventionally, when such a gap occurs, for example, a plurality of pipe materials are horizontally extended from the elevating type scaffolding device to the gap portion, and a scaffolding plate is arranged on these pipe materials to provide a simple work floor. I was trying to lay it.

  However, the work for laying the simple work floor is not only dangerous because it is a work at a high place, but also a troublesome work. In addition, for example, when working while changing the height position of the work floor for a building such as a tower where the wall surface of the building changes according to the height (thinning toward the upper side) Therefore, it is necessary to remove a simple work floor made of the above-mentioned pipe material or the like or newly lay it again, which causes troublesome work.

  Thus, in the conventional lifting type scaffolding device, since the scaffold part 53 extends substantially linearly, the wall surface is not suitable for a curved or cylindrical building as described above. Further, when a simple work floor is laid to reduce the gap between the lifting and lowering scaffold device and the building, there is a problem that troublesome work occurs.

  The invention has been conceived under the circumstances described above. For example, even if the wall surface of the building is curved, the gap with the building is made as small as possible without causing troublesome work. An object of the present invention is to provide an elevating scaffold device that can be used.

  The lifting and lowering scaffold device provided by the present invention includes a mast portion extending in the vertical direction, a lifting and lowering portion provided so as to be movable up and down along the mast portion, and provided on a side of the lifting and lowering portion. A scaffold part that moves up and down as the part moves up and down, and on the side of the lift part, the scaffold part is rotated in the horizontal direction with a predetermined part of the end part on the scaffold part side of the lift part as a fulcrum. It is characterized in that a scaffolding part turning mechanism for moving is provided.

  In the lifting / lowering scaffold device according to the present invention, the scaffold part rotation mechanism includes a work bar that is rotated by a manual operation of an operator, and a substantially disk shape that is attached to the work bar and rotates by the rotation of the work bar. A pinion member, a rack member having one end supported by the elevating part and meshed with the pinion member, and movable along the longitudinal direction of the rack member while supporting the work bar, When the work bar is rotated by an operator's manual operation, the pinion member is rotated, and the pinion member is rotated. As the pinion member moves along the rack member engaged with the pinion member, the movable body is moved along the rack member, and is pushed against the scaffold portion by the movement of the movable body. A force is applied, may the scaffold portion by the pressing force is turned in the horizontal direction in the fulcrum predetermined portion of the scaffold portion end of the lifting portion.

  In the lifting and lowering scaffolding device according to the present invention, the scaffold part turning mechanism is provided with a lock mechanism that prohibits the turning of the scaffold part, and the locking mechanism includes a first connecting member that is connected to the lifting part. The second connecting member connected to the scaffold portion and a fastening member capable of fastening them together may be used.

  In the lifting and lowering scaffolding device of the present invention, the lifting and lowering portion is configured by a lifting and lowering main body that moves up and down along the mast portion, and a horizontal moving portion that is movable in the front-rear and horizontal directions of the main body, The said scaffold part rotation mechanism is good to be provided in the side of the horizontal movement part.

  According to the present invention, since the scaffolding part turning mechanism for turning the scaffolding part in the horizontal direction is provided on the side of the lifting part, with the predetermined part of the scaffolding part side end part of the lifting part as a fulcrum, The scaffold part can be rotated by the scaffold part rotating mechanism. Therefore, for example, even when the work is performed on a building having a curved wall surface, the scaffold portion can be disposed close to the wall surface. Therefore, the gap with the building can be made as small as possible without causing the troublesome work of laying a simple work floor as in the conventional configuration.

It is a front view which shows the raising / lowering scaffold apparatus which concerns on this invention. The arrangement | positioning relationship of a motor and a pinion is shown, (a) is a side view, (b) is a rear view. It is the fragmentary perspective view which looked at the raising / lowering type scaffold apparatus from diagonally upward. It is the fragmentary perspective view which looked at the raising / lowering type scaffold apparatus from diagonally downward. It is the perspective view which looked at the principal part of the scaffold part rotation mechanism from the back side. It is a figure for demonstrating operation | movement of a scaffold part rotation mechanism. It is a figure for demonstrating operation | movement of a scaffold part rotation mechanism. It is a figure which shows a state when the left side scaffold part of a raising / lowering type scaffold apparatus is rotated and arrange | positioned along a building. It is a figure which shows a state when the left scaffold part of a raising / lowering type scaffold apparatus is rotated, a moving part is moved, and it arrange | positions along a building. It is a figure which shows a state when the left scaffold part and right scaffold part of a raising / lowering type scaffold apparatus are rotated and arrange | positioned along a building. It is a front view which shows the conventional raising / lowering scaffold apparatus.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

  FIG. 1 is a front view showing an elevating scaffold device (hereinafter simply referred to as “scaffold device”) according to the present invention. This scaffold device is used for, for example, a temporary scaffold for construction work, and is particularly a lifting type in which a work floor is raised and lowered.

  As shown in FIG. 1, the scaffold device includes a mast 1 having a predetermined height and a scaffold part 2 supported by the mast 1 and capable of moving up and down. In the following description, members having the same configuration are denoted by the same reference numerals.

  The mast 1 has a base portion 3 for supporting it. The base portion 3 is formed in a substantially flat plate shape, and a plurality of jack mechanisms 4 are provided at corners of the base portion 3. The jack mechanism 4 maintains the base portion 3 in a horizontal state by adjusting the height of the jack mechanism 4 with respect to the ground G.

  The mast 1 has a configuration in which a plurality of frame members 5 whose outer shapes are formed in a substantially rectangular parallelepiped frame shape are connected. Specifically, the mast 1 is configured such that a lowermost frame member 5 is attached at the center of the base portion 3, and another frame member 5 is stacked above the frame member 5.

  A rack 6 extending in the vertical direction is provided in the internal space of each frame member 5 of the mast 1. The rack 6 is formed in a long shape, and as shown in FIG. 2B, an engagement portion 6a is formed on one end face thereof. Two pinions 7 are meshed with the meshing portion 6a, and the pinions 7 are respectively provided on rotating shafts 9a and 10a of a first motor 9 and a second motor 10 described later.

  The mast 1 is provided with an elevating body portion 8 that can be moved up and down along the mast 1. The elevating body part 8 is formed in a substantially rectangular parallelepiped frame shape extending in the height direction. The raising / lowering main-body part 8 is raised / lowered along the outer surface of the frame member 5 via a guide roller not shown.

  As shown in FIGS. 1 and 2, a first motor 9 and a second motor 10 for raising and lowering the elevator body 8 are arranged side by side in the vertical direction. The first and second motors 9 and 10 are induction motors and are each provided with a brake mechanism for stopping the rotation thereof. The first and second motors 9 and 10 are designed in consideration of emergency safety such as using one motor when one motor fails.

  The elevating / lowering main body portion 8 is provided with a horizontal moving portion 11 which is disposed so as to cover it and can move horizontally in the front-rear direction (before or in the depth direction in FIG. 1). The horizontal movement part 11 is formed in the substantially rectangular parallelepiped frame shape extended in the front-back direction. The horizontal moving part 11 is lifted and lowered together with the lifting and lowering body part 8 being lifted and lowered.

  The scaffold unit 2 includes a left scaffold unit 12 extending in the left direction with respect to the horizontal moving unit 11, a right scaffold unit 13 extending in the right direction with respect to the horizontal moving unit 11, and a forward direction of the horizontal moving unit 11. And a central scaffold 14 connecting the left scaffold 12 and the right scaffold 13. Between the left scaffolding part 12 and the horizontal movement part 11, a scaffolding part turning mechanism 15 (described later) for turning the left scaffolding part 12 backward is provided.

  Further, the left scaffolding portion 12 is provided with a leftward advance / retreat portion 16 that can be moved forward and backward in the left direction. On the other hand, the right scaffold portion 13 is provided with a right advance / retreat portion 17 that can be moved forward and backward in the right direction (FIG. 1 shows a state in which the left advance portion 16 and the right advance / retreat portion 17 have advanced respectively. Is shown.)

  By the said structure, the 1st and 2nd motors 9 and 10 are driven and the raising / lowering main-body part 8 is raised / lowered, the horizontal moving part 11 is raised / lowered, As a result, the scaffold part 2 is also raised / lowered. Further, when the horizontal moving unit 11 is moved in the front-rear direction, the scaffold unit 2 is also moved in the front-rear direction.

  In addition, although the scaffold part 2 is classified into the left scaffold part 12, the right scaffold part 13, the central scaffold part 14, etc. according to the function, as a common member configuration, there are a plurality of frames formed in a substantially rectangular parallelepiped frame shape. It has a frame member, a work floor that is disposed on the upper surface of each frame member and serves as a stepping floor for the worker, and a plurality of handrails 19 that stand on each frame member and prevent the operator from falling.

  As shown in FIG. 3, for example, the left scaffold section 12 has a work floor 12a, the central scaffold section 14 has a work floor 14a, and the scaffold section pivots between the work floor 12a and the work floor 14a. A connection support plate 18 configured as a part of the mechanism 15 is provided. As described above, the work floor 14a and the connecting support plate 18 are provided so that the work floor of the scaffold portion 2 extends substantially from the left advancing / retracting portion 16 arranged at the left end to the right advancing / retreating portion 17 arranged at the right end. It is assumed to be one. Therefore, the worker who has boarded the scaffold part 2 can move from the leftward advance / retreat part 16 to the rightward advance / retreat part 17 without once getting off the scaffold part 2. In addition, in FIG. 3, the handrail 19 of the center scaffold part 14 is abbreviate | omitted.

  Returning to FIG. 1, the mast 1 is provided with a supporting mechanism 20 for supporting and supporting the left scaffold portion 12 and the right scaffold portion 13. For example, when the left scaffold 12 is rotated by the scaffold rotating mechanism 15, the left scaffold 12 is rotated while being supported by the holding mechanism 20.

  The handrail 19 of the right side scaffold unit 13 controls the driving of the first and second motors 9, 10, etc., or controls the lifting / lowering stop of the scaffold unit 3 by inputting a signal from an unillustrated limit switch A control panel 21 is provided. The control panel 21 is connected to a power cable (not shown) extending from the ground, and a power cable (not shown) is connected to the first and second motors 9 and 10.

  Here, the scaffold part rotation mechanism 15 which is a characteristic part of the present embodiment will be described.

  The scaffold part rotation mechanism 15 is provided between the left scaffold part 12 and the horizontal movement part 11. The scaffold part turning mechanism 15 is for turning the tip of the left scaffold part 12 backward using the left end part (the base end part of the left scaffold part 12) of the horizontal movement part 11 as a fulcrum. is there. More specifically, the left scaffolding portion 12 is rotatable with respect to the horizontal movement portion 11 with a connecting portion 24 (see FIG. 4) positioned at the upper and lower ends on the rear side of the base end portion as a fulcrum. It is said that.

  As shown in FIG. 3, the above-described connection support plate 18 is provided between the left scaffold portion 12 and the central scaffold portion 14. The connection support plate 18 is formed in a substantially fan shape, and is fixed so that one end portion thereof is along the left side surface portion of the horizontal movement portion 11. The connecting support plate 18 has two first guide holes 25 and second guide holes 26 that are formed in arc shapes with different centers.

  The first guide hole 25 is formed on the rear side from the second guide hole 26. The first guide hole 25 is for guiding an operating bar 27 (see FIG. 5) for rotating the left scaffolding portion 12. FIG. 5 is a perspective view of the main part of the scaffold portion rotation mechanism 15 as seen from the rear side. As will be described later, the second guide hole 26 is for guiding an auxiliary bar 28 (see FIGS. 3 and 4) that assists the rotation of the left scaffold 12.

  As shown in FIG. 5, the operation bar 27 is formed in a bar shape having a hexagonal shape in cross section, extends in the vertical direction, and is rotatably supported by a movable body 29 (described later). A general-purpose tool (for example, a ratchet R) for rotating the operating bar 27 is mounted on the upper end thereof by an operator, and the operating bar 27 is rotated by a manual operation by the operator of the ratchet R.

  A movable body 29 is provided at the other end of the operation bar 27. The movable body 29 supports the operation bar 27 and is supported by a rectangular column member 30 constituting a frame member of the left scaffolding portion 12 via a connecting member 31 so as to be rotatable in the horizontal direction. The movable body 29 is formed in a substantially rectangular parallelepiped shape, and the movable body 29 is formed with a pair of support pieces 29a. The pair of support pieces 29a extend horizontally from the upper and lower parts of the movable body 29, and a disc-shaped pinion member 32 having a tooth portion 32a on the periphery is rotatably supported between the support pieces 29a. Yes. A long hole 29b is formed on the side surface of the movable body 29 on the side where the pair of support pieces 29a extends. The pinion member 32 is attached in the vicinity of the lower end of the operation bar 27 along the long hole 29b.

  A hollow portion 29c is formed in the movable body 29 so as to penetrate in the axial direction, and a rack member 33 that is movable in the hollow portion 29c is inserted into the hollow portion 29c. The rack member 33 is formed in a rod shape having a substantially circular cross-sectional view, and a meshing portion 33a that meshes with the tooth portion 32a of the pinion member 32 is formed in an arc portion along the longitudinal direction. A portion of the meshing portion 33a is exposed to the outside from the long hole 29b of the movable body 29, and a portion of the facing meshing portion 33a is meshed with the tooth portion 32a of the pinion member 32.

  The rack member 33 is supported at the left end portion of the horizontal moving portion 11 while the base end thereof is not connected, and is in a so-called cantilever state. More specifically, the base end of the rack member 33 is supported by a support receiver 34 (see FIGS. 4 and 5) provided in the horizontal movement unit 11 so as to be movable in the horizontal direction.

  Since the pinion member 32 is attached to the lower end portion of the operation bar 27 so as to rotate in the horizontal direction, the pinion member 32 is rotated as the operation bar 27 is rotated. When the pinion member 32 rotates, the turning force is transmitted to the rack member 33 engaged with the pinion member 32. That is, the above-described pinion member 32 and rack member 33 constitute a rack and pinion mechanism, and the rotational movement of the operating bar 27 is converted into the linear movement of the movable body 29 by this mechanism. For example, when the operation bar 27 is rotated counterclockwise by the ratchet R (see arrow A in FIG. 5), the movable body 29 is moved in the direction indicated by the arrow B shown in FIG.

  The connecting member 31 for connecting and supporting the movable body 29 is formed in a substantially cylindrical shape so as to enclose the prismatic material 30, and the connecting member 31 supports a pair of support pieces 31a for supporting the movable body 29 from above and below. Is formed. The movable body 29 is connected to the prism 30 of the left scaffolding portion 12 by a bolt (not shown) penetrating the movable body 29 and the pair of support pieces 31a.

  Further, a reinforcing member 35 extending obliquely upward is provided on the side surface opposite to the side surface of the connecting member 31. The upper end of the reinforcing member 35 is fixed to a fan-shaped member 36 (see FIGS. 3 and 4) provided so as to be substantially flush with the upper surface of the left scaffolding portion 12.

  The auxiliary bar 28 guided by the second guide hole 26 of the connection support plate 18 is formed in a bar shape having a circular shape in cross section and extends in the vertical direction. The auxiliary bar 28 has a top end exposed at the top from the second guide hole 26 and a lower portion supported by a connecting piece 37 (see FIG. 4) of the frame member of the left scaffolding portion 12. In addition, the auxiliary bar 28 is guided at a lower end tip by a guide frame 38 (described later), and an upper portion thereof is supported by a connecting piece 40 of a frame member of the left scaffold portion 12.

  The guide frame 38 is formed in a substantially arc shape, and a guide hole 39 is formed inside. The guide hole 39 is formed in an arc shape having the same locus as the second guide hole 26. One end of the guide frame 38 is rotatably supported by a connecting piece 41 fixed to the frame member of the horizontal moving unit 11, while the other end is not connected and is in a so-called cantilever state.

  The auxiliary bar 28 is guided by the second guide hole 26 and the guide hole 39 when the left scaffold part 12 is rotated, and is moved together with the left scaffold part 12.

  The auxiliary bar 28 is provided with a lock mechanism for prohibiting the rotation of the left scaffolding portion 12. That is, when the operator rotates the bolt 28a at the upper end of the auxiliary bar 28, for example, clockwise, the connection support plate 18 (corresponding to the “first connection member” described in the claims) and the fan-shaped member 36 (patent) (Corresponding to “second connecting member” described in the claims) is tightened so as to be sandwiched between the bolt 28a and a nut (not shown). Therefore, the left scaffolding portion 12 is fixedly supported at the stopped position after being rotated to a desired angular position.

  In order to release the lock mechanism, the operator may rotate the bolt 28a (see FIG. 3) at the upper end of the auxiliary bar 28 counterclockwise, for example.

  At the edge of the work floor 12a of the left scaffolding portion 12, a baseboard 42 that is movable is provided. The skirting board 42 is formed of a long flat plate, and one end of the skirting board 42 is fixed by a fixing member 43 at the left side scaffolding part 12 side end of the central scaffolding part 14, and the edge of the work floor 12 a of the left scaffolding part 12. It is slidably supported by a guide member 44 provided in the section. Even if the skirting board 42 is the case where the left scaffolding part 12 is rotated by the scaffolding part rotating mechanism 15, one end is fixed to the fixing member 43. Can be shielded. Therefore, even when the left scaffolding part 12 rotates, for example, a tool or the like can be prevented from falling.

  Next, the operation of the scaffold part rotation mechanism 15 will be described.

  Here, as shown in FIG. 6, it is assumed that the left scaffolding portion 12 is not rotated. 6 and 7, the connecting support plate 18 is omitted. First, for example, the worker attaches the ratchet R to the tip of the work bar 27 and rotates the ratchet R counterclockwise (see arrow A in FIG. 6). Thereby, the pinion member 32 attached to the lower end part of the work bar 27 rotates in the same direction.

  In this case, the pinion member 32 is supported by the movable body 29 and meshed with the rack member 33, and one end of the rack member 33 is supported by the support receiver 34 of the horizontal moving unit 11. A force is applied to 29 in a direction away from the horizontal moving portion 11, that is, the movable body 29 is moved along the rack member 33 (see arrow B).

  Since the movable body 29 is connected to the prism 30 of the left scaffold portion 12 via the connecting member 31, when the movable body 29 moves along the rack member 33, a pressing force is applied to the left scaffold portion 12. The left scaffolding part 12 tries to move in a direction away from the horizontal moving part 11. Since the left scaffolding portion 12 is connected to and supported by the horizontal moving portion 11 at the connecting portion 24, the left scaffolding portion 12 is rotated so that its tip moves backward as shown in FIG. Moved (see arrow C).

  In this case, since the auxiliary bar 28 is connected to the connecting piece 37 at the upper end portion and the connecting piece 40 at the lower end portion of the left scaffold portion 12, it moves together with the left scaffold portion 12. That is, the upper end portion of the auxiliary bar 28 is guided to the second guide hole 26 of the connection support plate 18, and the lower end portion is guided to the guide hole 39 of the connecting frame 38.

  Here, the operator can lock the left scaffolding portion 12 so as not to rotate at an arbitrary rotation angle position. That is, the left scaffolding plate 12 is stopped at an arbitrary rotation angle position by the rotation operation of the ratchet R, and then the ratchet R is mounted on the bolt 28 a of the auxiliary bar 28 guided by the first guide hole 26. Then, by rotating the ratchet R, the bolt 28a is tightened. As a result, the connecting support plate 18 and the fan-shaped member 36 are sandwiched between the bolt 28a and a nut (not shown), and the rotation of the left scaffolding plate 12 is prohibited. Therefore, the left scaffolding part 12 can be fixed at an arbitrary rotation angle position.

  As described above, according to the scaffold part rotating mechanism 15 according to the present embodiment, the left scaffold part 12 can be easily operated with the connecting part 24 of the horizontal moving part 11 as a fulcrum by an operator's manual operation using, for example, a general-purpose ratchet R. Can be rotated. Therefore, as shown in FIG. 8, even when the wall surface of the building S is formed in a curved shape, the scaffold part 2 of the scaffold device can be arranged close to the wall surface. Therefore, the gap with the building can be made as small as possible without causing the troublesome work of laying a simple work floor as in the conventional configuration. Therefore, the operator can suppress the possibility of dropping a tool or the like as much as possible, and can perform work well at a place close to the building S.

  Further, according to this scaffold turning mechanism 15, the left scaffolding plate 12 can be fixed at an arbitrary position by locking the auxiliary bar 28, so that the work floor is stable during work and reliable work can be performed. It can be carried out.

  Moreover, according to this scaffold rotation mechanism 15, when the left scaffold part 12 is rotated or locked, it can carry out easily with the ratchet R which is a general purpose tool. Moreover, since the ratchet R can be operated on the work floor of the scaffold part 2, work can be performed efficiently.

  Further, according to the scaffold part rotating mechanism 15, the left scaffold part 12 can be manually operated by an operator without using a driving force such as a motor when the left scaffold part 12 is rotated. The power consumption when rotating the can be reduced.

  Further, in the scaffold device according to the present embodiment, since the horizontal movement unit 11 is movable in the front-rear direction with respect to the lifting main body unit 8, the left scaffold unit 12 is rotated as shown in FIG. After that, when the horizontal moving unit 11 is moved with respect to the lifting / lowering main body unit 8 (see arrow D), it is possible to make fine adjustments such as bringing the building S and the scaffold unit 2 closer together. Therefore, the worker can work at a more appropriate position.

  Moreover, the scaffold part rotation mechanism 15 can be provided not only on the left scaffold part 12 side but also on the right scaffold part 13 side. Thus, if the scaffolding part rotation mechanism 15 is provided in both the left scaffolding part 12 and the right scaffolding part 13, as shown in FIG. 10, the building S has a substantially cylindrical shape such as a chimney or the like, or Even if it is a substantially cylindrical shape, a scaffold apparatus can be arrange | positioned along the shape of the building S, and work can be performed favorably.

  In addition, for example, a building such as a tower where the wall surface of the building changes according to the height (thinning toward the upper side) is changed while changing the height position of the work floor of the scaffold 2. Also when performing, after raising / lowering the scaffold part 2, the scaffold part 2 can be moved so that it may approach a building sequentially. Therefore, unlike the conventional configuration, it is not necessary to remove a simple work floor made of pipe material or the like and newly lay it again, and troublesome work does not occur.

  The scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. For example, in the description of the above embodiment, the scaffold part rotation mechanism 15 is provided only in the left scaffold part 12, but instead, it may be provided only in the right scaffold part 13.

  Moreover, in the said embodiment, although the scaffold part 2 was comprised so that it might rotate to back side, it may replace with this and the scaffold part 2 may be comprised so that it may rotate to the near side.

  Further, the number, form, size, configuration, and the like of the members constituting the scaffold part rotation mechanism in the above embodiment are not limited to those in the above embodiment. Moreover, the structure of the mast 1, the scaffold part 2, the raising / lowering main-body part 8, the horizontal displacement part 11, and the 1st and 2nd motors 9 and 10 grade | etc., Can change a design suitably. Moreover, although the scaffold apparatus of the said embodiment was comprised with one mast, the number of masts may be comprised with two or more.

DESCRIPTION OF SYMBOLS 1 Mast 2 Scaffolding part 8 Lifting body part 9 1st motor 10 2nd motor 11 Horizontal moving part 12 Left scaffolding part 13 Right scaffolding part 14 Central scaffolding part 15 Scaffolding part rotation mechanism 18 Connection support plate 27 Actuating bar 28 Auxiliary Bar 29 Movable body 30 Square column member 32 Pinion member 33 Rack member 36 Fan-shaped member R Ratchet

Claims (4)

A mast portion extending vertically,
An elevating part provided so as to be movable up and down along the mast part;
Provided on the side of the lifting unit, and includes a scaffolding unit that moves up and down as the lifting unit moves up and down.
On the side of the elevating part, there is provided a scaffold part rotating mechanism for rotating the scaffold part horizontally with a predetermined part of the end part on the scaffold part side of the elevating part as a fulcrum. A lifting and lowering scaffold device. The scaffold part turning mechanism is
A work bar that is rotated manually by the operator;
A substantially disk-shaped pinion member attached to the work bar and rotated by rotation of the work bar;
A rack member having one end supported by the elevating unit and meshed with the pinion member;
It is movable along the longitudinal direction of the rack member while supporting the work bar, and is constituted by a movable body connected to the lifting part side base end part of the scaffold part,
When the work bar is turned by a manual operation by an operator, the pinion member is turned,
As the pinion member moves along the rack member meshed with the pinion member, the movable body is moved along the rack member.
A pressing force is applied to the scaffold portion by the movement of the movable body, and the scaffold portion is rotated in the horizontal direction about a predetermined portion of the lifting portion side end portion of the lifting portion by the pressing force. The lifting / lowering scaffold device according to claim 1. In the scaffold part rotation mechanism,
A locking mechanism for prohibiting the rotation of the scaffold portion is provided;
The locking mechanism is
A first connecting member connected to the elevating unit;
A second connecting member connected to the scaffold portion;
The raising / lowering scaffold apparatus of Claim 1 or 2 comprised by the fastening member which can fasten them together. The elevating part is
An elevating main body that moves up and down along the mast;
It is constituted by a horizontal movement part that is movable in the front-rear direction and the horizontal direction of the main body part,
The elevating type scaffolding device according to any one of claims 1 to 3, wherein the scaffold unit rotating mechanism is provided on a side of the horizontal moving unit.

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