JP2019214873A - Installation method of ascending and descending scaffold - Google Patents

Abstract

To provide an installation method of an ascending and descending scaffold on a sloped place capable of properly ascending and descending a work floor even when installing, for example, on a sloped place.SOLUTION: This invention is an installation method of an ascending and descending scaffold which comprises: a pair of mast portions 1,2 each of which comprises a plurality of posts 8; a pair of base portions 3,4 each of which supports each mast portion 1,2; a pair of moving portions 5,6 each of which is movable along both mast portions 1,2; and a carrier portion 7 which is supported so as to be stretched on both moving portions 5,6 and on which an operator rides. The installation method includes: an installation step of installing both base portions 3,4 on a sloped face G so that upper faces thereof become flat with a predetermined interval; an adjusting step of adjusting height of either of moving portions so that horizontal positions of both moving portions 5,6 are coincident with each other; and an installing step of installing the carrier portion 7 so as to be stretched on both moving portions 5,6.SELECTED DRAWING: Figure 11

Description

  The present invention relates to an installation method for installing an elevating scaffold on which a work floor moves up and down, and particularly to an installation method for installing an elevating scaffold on an inclined ground or a stepped land.

  2. Description of the Related Art Conventionally, a temporary scaffold is provided along a building, for example, in a construction work of a building or the like, and is used as a work floor when working at heights. In recent years, an elevating scaffold capable of vertically moving a work floor has been proposed as a temporary scaffold (for example, see Patent Document 1).

  Among the elevating scaffolds, there are known ones that include, for example, two masts, and a scaffold having a work floor is connected between these masts, and the scaffold moves up and down while maintaining a substantially horizontal state. I have. That is, this lifting type scaffold has, for example, two masts arranged side by side at a predetermined interval on the ground (ground), and is provided with a lifting part which can slide along each mast. Each elevating unit is moved up and down by, for example, rotation of a motor. The scaffold is provided so as to connect the lifts, and extends in the lateral direction of each lift.

  According to this elevating scaffold, since each elevating part is moved up and down at substantially the same timing, the scaffold moves up and down while maintaining a substantially horizontal position. Thereby, the worker riding on the scaffold can perform a high-place work at a predetermined height position when the scaffold rises to a predetermined height.

  However, the installation location of the elevating scaffold is not necessarily horizontal but may be inclined or provided with a step. For example, when an elevating scaffold is installed on an inclined place, the scaffolding part moves up and down while being inclined, and the foot of an operator boarding the scaffolding part becomes unstable. In addition, when the inclination angle of the sloping ground is large, the elevating scaffold itself may fall, and the scaffold may not be able to be moved up and down. This problem is also the same when an elevating scaffold is installed on a stepped ground.

Japanese Patent No. 5783351

  The present invention has been conceived under the circumstances described above, and provides a method of installing a lifting type scaffold that can favorably raise and lower a work floor even when it is installed on a slope or a stepped land. The task is to provide.

  The method of installing a lifting scaffold provided by the present invention includes moving a pair of masts each including a plurality of columns, a pair of bases respectively supporting the masts, and moving along the masts. An installation method for installing an elevating scaffold including a pair of freely movable units and a transporter unit supported so as to be bridged between the two movable units and on which an operator rides, on an inclined ground or a stepped ground. One of the disposing step of disposing the two base portions on the sloped land or the stepped land so that their upper surfaces are horizontal and at a predetermined interval; and And a mounting step of attaching the transporter unit to both of the moving units.

  In the method for installing a lifting scaffold according to the present invention, an extending step of extending the mast section by connecting the columns upward, and a moving step of moving the moving section along the coupled columns are further performed. It is good to include.

  In the method of installing a lifting scaffold according to the present invention, in the moving step, a first driving mechanism and a second driving mechanism for moving the moving units in a vertical direction are used, and the two driving mechanisms are each electrically driven. It is preferable to be driven by the rotational force of a tool.

  The method for installing a lifting scaffold according to the present invention may further include a connecting step of connecting the pair of base portions with a connecting member.

  According to the present invention, both base portions are arranged at a predetermined interval on a sloped land or a stepped land, and the height of one of the moving portions is adjusted so that the horizontal positions of the two moving portions match. After that, the transporter unit is attached so as to extend over both moving units. Since the carrying unit is attached to the moving unit having the same horizontal position, the work floor of the carrying unit can be moved up and down satisfactorily while the moving unit is moved. Therefore, even when the elevating scaffold is installed on an inclined ground or a stepped land, the worker can work in a stable state without any trouble.

It is a figure which shows the structure of the raising / lowering scaffold to which the installation method which concerns on this invention is applied, (a) is a top view, (b) is a front view, (c) is a side view. FIG. 2 is a perspective view showing a transporter support mechanism of the elevating scaffold shown in FIG. 1. It is a figure showing the state where the electric screwdriver was joined to the gearbox. It is the perspective view of a support | pillar, and a principal part enlarged perspective view. It is a perspective view of a carrying part and a carrying support mechanism. It is a figure for explaining an installation method at the time of installing in a slope. It is a figure for explaining an installation method at the time of installing in a slope. It is a figure for explaining an installation method at the time of installing in a slope. It is a figure for explaining an installation method at the time of installing in a slope. It is a figure for explaining an installation method at the time of installing in a slope. It is a figure for explaining an installation method at the time of installing in a slope. It is a figure which shows the modification of an installation method. It is a figure for explaining an installation method at the time of installing in a level difference place.

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

  FIG. 1 is a diagram showing a configuration of a lifting type scaffold to which an installation method according to the present invention is applied, and FIG. 1 shows a case where an installation surface (ground) is flat. 1A is a plan view, FIG. 1B is a front view, and FIG. 1C is a side view. FIG. 2 is a perspective view showing a carrier support mechanism (described later) of the elevating scaffold shown in FIG. In the following, a case will be mainly described in which an elevating scaffold is installed on a slope. In the following description, members having the same configuration are denoted by the same reference numerals.

  The elevating scaffold is used, for example, when repairing an exterior surface of a building, and is particularly an elevating type in which a work floor is raised and lowered. As shown in FIG. 1, the lifting scaffold includes a pair of first mast portions 1 and a second mast portion 2 disposed at a predetermined interval, and a pair of first mast portions 1 and 2 for supporting the respective mast portions 1 and 2. The first base unit 3 and the second base unit 4, the pair of the first moving unit 5 and the second moving unit 6 that can be moved up and down along the mast units 1 and 2, respectively, and the two moving units 5 and 6. It is schematically constituted by a carrying unit 7 supported so as to be bridged.

  In this elevating scaffold, a worker who works on the transport unit 7 gets on board, and the transport unit 7 is moved up and down by the first and second moving units 5 and 6 along the first and second mast units 1 and 2, respectively. Be moved. Thereby, the worker can work at a suitable height position. The first and second mast parts 1 and 2, the first and second base parts 3 and 4, and the first and second moving parts 5 and 6 have the same configuration, respectively. When only the configuration is described, the same applies to the other configuration unless otherwise specified.

  The first and second mast portions 1 and 2 each include a plurality of columns 8, and extend in the up-down direction by being sequentially connected. The connection between the columns 8 is performed by an operator who has boarded the transporter unit 7, whereby the operator can adjust the height of the first and second mast units 1 and 2 to a desired height. . The details of the support 8 will be described later.

  As shown in FIG. 2, the first and second base portions 3 and 4 each include a base frame 9 for supporting the column 8. The base frame 9 is formed of a frame formed in a substantially rectangular shape in a plan view, and has a plurality of support pillars 10 serving as support supports for the support pillars 8 on the upper surface thereof.

  Four outriggers 11 arranged to extend radially are connected to four corners of the base frame 9. The outrigger 11 is for stably holding the lift-type scaffold with respect to the ground (ground), and a jack member 12 capable of adjusting the height of the outrigger 11 is provided at a distal end thereof. The mounting direction of the outrigger 11 with respect to the base frame 9 can be freely changed within a predetermined angle range.

  A jack member 12 is also provided at a central portion in the longitudinal direction of the base frame 9. On the lower surface side of the base frame 9, for example, casters 13 for allowing an operator to move the elevating scaffold by hand are provided, and each caster 13 is provided with a stopper. As will be described later, when the elevating scaffold is installed on a slope, the upper surfaces of the first and second base portions 3 and 4 (base frame 9) need to be horizontal. In such a case, the jack member 12 having a different length may be used.

  The first and second moving parts 5 and 6 are for supporting the carrying unit 7 and moving it up and down while supporting it. The moving plate 14 extends in the up-down direction and is formed in a substantially U-shape in sectional view. It has. The moving plate 14 is slidably disposed along the side surface of the column 8, and a support member 15 for supporting the carrying unit 7 is connected to a lower part of the front surface thereof. The support member 15 has a length slightly larger than the length in the width direction of the transport unit 7, and a locking piece 16 for locking the main body of the transport unit 7 so as to be wrapped around the support member 15 is freely attachable. It is prepared for.

  A gear box 17 is attached to the upper front part of the moving plate 14. The gear box 17 includes a plurality of gears (not shown) therein, and rotates the first and second moving units 5 and 6 by the electric driver D joined to the gear box 17 as described later. This is converted into a traveling motion in the direction.

  As shown in FIG. 3, a driver receiver 18 is provided on the upper surface of the gear box 17, and a rotation shaft of the electric driver D is joined to the driver receiver 18 by an operator. The power supply voltage of, for example, AC 100 V is supplied to the electric driver D.

  Here, one carrier support mechanism shown in FIG. 2 includes, for example, in the case of the first mast unit 1 side, the first base unit 1, four outriggers 11 and a check member 12, one support 8, and a moving plate 14. It is constituted by.

  As shown in FIG. 4, the pillars 8 are formed in a substantially prismatic shape having a predetermined length, and are used while being stacked while sequentially connecting the plurality of pillars 8 upward in the elevating scaffold of the present embodiment. . Recesses extending in the vertical direction are respectively formed on four side surfaces of the support column 8, and a long plate-shaped track 20 is fitted on one of the four side surfaces on the front side. The track 20 has a plurality of engagement holes 21 formed in the longitudinal direction.

  The gear of the gear box 17 described above is engaged with the engagement hole 21 of the truck 20. That is, when the gear of the gear box 17 is rotated by the rotating operation of the electric driver D while being fitted into the engagement hole 21, the moving plate 14 is moved up and down along the support column 8, whereby the first and the second plates are moved. The second moving parts 5, 6 are moved up and down.

  As shown in FIG. 4, a connection lever 22 for connecting another support 8 is provided at the upper end of the left and right side surfaces of the support 8. The connection lever 22 is connected to a lever lock (not shown) provided at the lower end of the upper support 8 when the upper end of the lower support 8 and the lower end of the upper support 8 are joined. It is connected to the lower support 8. In the vicinity of a corner on the upper surface of the column 8, four concave portions 23 are formed to which projections (not shown) formed at the lower ends of the other columns 8 are fitted.

  As shown in FIG. 5, the transporter unit 7 is formed in a long shape, and is arranged along the working floor 24 on which the worker stands and the longitudinal direction of the transporter unit 7 to prevent the worker from falling. It has a handrail 25 for prevention and a pair of doors 26 respectively provided at both ends of the transport unit 7 and opened and closed when a worker gets on the board. The transport unit 7 is attached to the upper surface of the support member 15 of the first and second moving units 5 and 6 arranged in parallel. 5 is locked by the locking pieces 16 of the support member 15 and the depth side is locked to the support member 15 by using locking pieces (not shown).

  In addition, as shown in FIG. 5, the transporter unit 7 is composed of a plurality of members and is combined with each other to be integrally assembled, and is configured to be independent of the transporter support mechanism. The material of each member constituting the transport unit 7 is made of, for example, an aluminum alloy, thereby reducing the weight of the transport unit 7.

  Next, an installation method which is a feature of the present embodiment will be described. This elevating scaffold is installed on a slope in the following procedure. In addition, it is assumed that the sloped land has a slope in the left-right direction when a building (not shown) is viewed from the front. Therefore, the elevating scaffold according to the present embodiment is installed such that the longitudinal direction of the transporter unit 7 is the same as the left-right direction.

  First, as shown in FIG. 6, a pair of transporter support mechanisms are arranged in parallel on a slope G at a predetermined interval. In this case, the upper surfaces of the first and second base portions 3 and 4 are each made horizontal. If the upper surfaces of the base portions 3 and 4 are to be made horizontal, the length of the jack member 12 may be insufficient in the outrigger 11 arranged at a low place depending on the inclination angle of the inclined ground G. In such a case, a jack member 12 having a long length may be used. For the same reason, the outriggers 11 may be of different lengths, and when the outriggers 11 arranged at a high place cannot be installed radially with respect to the base frame 9, the direction in which the inclined surface G is lowered. May be installed in a direction orthogonal to.

  Although FIG. 6 shows a state in which the carrier supporting mechanism is integrally assembled, the members may be arranged so as to be sequentially assembled. For example, only the first and second base portions 3 and 4 of the pair of transporter support mechanisms may be arranged first, and the outrigger 11 and the jack member 12 may be attached thereafter.

  Next, the height of one of the moving parts is adjusted so that the horizontal positions of the first and second moving parts 5 and 6 coincide. That is, when the transport unit 7 is attached to the support member 15 of the first and second moving units 5 and 6 in the state shown in FIG. 6, the transport unit 7 is inclined at substantially the same angle as the inclination angle of the inclined ground G. Will be attached. Therefore, one of the moving parts is moved upward so that the horizontal positions of the two moving parts 5 and 6 (the surfaces of the support members 15) coincide with each other.

  For example, as shown in FIG. 6, when the second moving unit 6 is on the lower ground side than the first moving unit 5, the second moving unit 6 is moved upward. At this time, as shown in FIG. 7, the support 8 is moved upward in the second mast part 2 which is arranged in advance on the lowland side so that the second moving part 6 can move along the second mast part 2. Add to

  When moving the second moving unit 6 in the upward direction, the operator operates the electric screwdriver D joined to the gear box 17 of the second moving unit 6. As a result, the electric driver D is driven to rotate, and the rotational driving force is given to the gears in the gear box 17. Since the gear is fitted in the engagement hole 21 of the column 8, the second moving unit 6 moves upward by this. Then, as shown in FIG. 8, the second moving unit 6 is moved until the horizontal positions (see the horizontal line H) of the first and second moving units 5 and 6 match.

  If the horizontal positions of the two moving parts 5 and 6 are substantially the same, then, as shown in FIG. In this case, the transport unit 7 is locked to the support member 15 by the locking pieces 16 and the like. Accordingly, the transport unit 7 is maintained in a substantially horizontal state, so that the operator can board the transport unit 7 without any trouble. In this case, the worker can use the door 26 on the first mast side 1 to smoothly board the transport unit 7.

  Next, as shown in FIG. 10, the next support columns 8 are connected upward in both mast sections 1 and 2 in order to raise the transporter section 7. When the two operators operate the electric screwdrivers D joined to the gear box 17, respectively, the first and second moving parts 5, 6 move upward, and as shown in FIG. The part 7 is raised (see arrow U).

  Since the first and second mast portions 1 and 2 are connected to a plurality of columns 8, the worker raises the transport unit 7 to a position where the next column 8 can be connected (see FIG. 11), the rotation of the electric driver D is stopped.

  In this way, the first and second moving units 5 and 6 are moved so as to raise the carrying unit 7 while sequentially connecting the columns 8 of the mast parts 1 and 2. The support 8 may be connected as needed. For example, in the state shown in FIG. 9, the upper end of the support 8 on the second mast portion 2 side is extremely upward, and the worker connects the next support 8. If it is difficult, first connect the columns on the first mast unit 1 side, raise the transporter unit 7 and move the second moving unit 6 to near the upper end of the columns 8 already connected, and then You may make it connect the support | pillar 8 of the 2nd mast part 2 side.

  According to the installation method according to the present embodiment, the two base portions 3 and 4 are arranged on the inclined ground G at a predetermined interval, and the height of one of the moving portions 5 and 6 is adjusted so that the horizontal positions of the two moving portions 5 and 6 match. To adjust. After that, the transporter unit 7 is attached so as to extend over both moving units 5 and 6. Since the transport unit 7 is attached to the moving units 5 and 6 having the same horizontal position, even if the moving units 5 and 6 are moved thereafter, the work floor of the transport unit 7 is preferably maintained in a horizontal state. Can be raised and lowered. Therefore, even when the elevating scaffold is installed on the slope G, the worker can work in a stable state without any trouble.

  Note that the scope of the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the scope of the present invention. For example, the shape, size, quantity, and the like of each component of the lifting scaffold applied to the installation method in the above embodiment are not limited to the above embodiment, and the design can be changed as appropriate.

  As shown in FIG. 12, a connecting member 27 that can firmly and stably hold the transporter support mechanisms may be provided between the transporter support mechanisms. Both ends of the connecting member 27 are attached to flanges 28 provided on the first and second base portions 3 and 4 of the carrier support mechanism. More specifically, the connection member 27 is attached to the flange 28 by, for example, bolting to a long hole (not shown) formed in the flange 28 so that the attachment angle can be changed. The connecting member 27 is desirably attached when the pair of transporter support mechanisms shown in FIG. 6 are arranged, but the timing of attachment is not limited to this.

  In addition, the above-described method of installing the elevating scaffold on the slope G may be similarly applied to the case where the elevating scaffold is installed on the stepped ground S as shown in FIG.

DESCRIPTION OF SYMBOLS 1 1st mast part 2 2nd mast part 3 1st base part 4 2nd base part 5 1st moving part 6 2nd moving part 7 Carrier part 8 Column 15 Support member 17 Gear box 27 Connecting member D Electric driver

Claims (4)

A pair of mast parts each consisting of a plurality of struts,
A pair of base portions respectively supporting the respective mast portions,
A pair of movable parts respectively movable along the mast parts,
A carrier unit that is supported so as to be bridged between the two moving units and on which a worker boards, and an installation method for installing an elevating scaffold provided on an inclined ground or a stepped land,
An arranging step of arranging the base portions on the sloped land or the stepped land so that their upper surfaces are horizontal and at a predetermined interval;
An adjusting step of adjusting the height of one of the moving parts so that the horizontal positions of the two moving parts match,
An attaching step of attaching the carrying unit to the both moving units,
A method for installing a lifting scaffold, comprising: A stretching step of extending the mast by connecting the columns upward,
A moving step of moving the moving section along the connected columns;
The method for installing a lifting scaffold according to claim 1, further comprising: In the moving step, a first driving mechanism and a second driving mechanism for moving the moving units in the vertical direction are used,
3. The method according to claim 2, wherein each of the two driving mechanisms is driven by a rotational force of a power tool.   4. The method of claim 1, further comprising a connecting step of connecting the pair of base portions with a connecting member.

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