JP3077560B2 - Crossing plate mechanism of jumping scaffold for building construction work - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jumping scaffold for building construction work in which a scaffolding frame is easily suspended in a vertical direction along a building outer wall, and more particularly to a jumping scaffolding between scaffolding frames installed adjacent to each other. The present invention relates to a mechanism for bridging a crossover.

[0002]

2. Description of the Related Art As shown in, for example, Japanese Patent Publication No. 6-8572, the following jumping scaffolds for building construction work are known. This kind of jumping scaffold
Rather than installing the ground as a support base, it is installed on the outer wall of a building under construction in a hanging shelf and moved upward in a timely manner. It has the feature that a large hoist such as is not used.

In other words, a large number of bars, such as steel pipes, angle steels, and channel steels, are connected vertically and horizontally to form a lattice-like frame, and a plurality of stages of scaffolding plates are horizontally mounted to form a scaffolding framework. ing. The overall height of this scaffold framework is several floors of the building, and the anchors are attached to the middle part and near the lower end, respectively. On the other hand, anchor bolts are buried at appropriate intervals in the outer wall portion of the building under construction, and anchor fittings to be connected to the locking fittings are attached to anchor bolts at predetermined positions.

[0004] Then, by hooking a metal fitting near an intermediate portion and a lower end of the scaffold framework to an anchor metal on the outer wall of the building, the entire weight of the scaffold framework is supported by the anchor metal.
A scaffold framework will be installed on the side of the building in a hanging shelf style. When the anchor of the middle part of the scaffold framework is hooked on the anchor of the top of the building outer wall, the upper part of the scaffold framework protrudes above the top of the building under construction. Using this scaffold framework, construction work for the upper part of the building is advanced (anchor fittings are also attached to the outer wall of the part constructed by the construction).

[0005] When a new upper part of the building is constructed by the above-mentioned construction, the entire scaffolding frame is pulled up from the top of the new part using a chain block or the like, and the locking metal fitting in the middle part of the scaffolding frame is replaced with the new building part. Hook on the newly provided anchor. As a result, the upper portion of the scaffold framework is in the same state as described above protruding further above the new building portion, and construction work for the further upper portion of the building is advanced using this scaffold.
In this way, the entire scaffold framework is moved upward as the construction progresses.

[0006] Further, the conventional jumping scaffold for building construction work is supported as a hanging shelf as a whole by hooking a locking fitting provided on a scaffold framework to an anchor fitting protruding from an outer wall of the building. As a specific configuration of the support portion, a hook-shaped locking metal is fixed at a predetermined position on the inner vertical bar near the building outer wall in the lattice-shaped frame composed of vertical and horizontal bars. It has a structure that supports the weight of the scaffold framework with fasteners.

In this type of jumping scaffold for building construction work, instead of installing one large scaffold framework over the entire width of the building, a plurality of small and light-weight scaffold frameworks are arranged side by side. Is common. It is easier to move the scaffold framework.

When a plurality of scaffold frameworks are arranged side by side in the horizontal direction, some scaffold frameworks are arranged with a slight gap between adjacent scaffold frameworks in order to avoid interference. Workers climb into the scaffold framework and perform various tasks while moving on the scaffold board. Of course, they often move to the next scaffold framework. For this reason, the connecting plate is extended substantially horizontally across the gap between the scaffolding plates of the adjacent scaffolding frameworks, and the plurality of scaffolding plates form a working passage that is continuous in the longitudinal direction.

In the lattice-shaped frame of the scaffolding framework, the inner vertical bar and the outer vertical bar are arranged in parallel with an interval corresponding to the width of the scaffold plate, and the two vertical bars are horizontal. They are connected by short width bars. Also, two inner vertical bars having a relatively large interval are connected by a long inner horizontal bar, and similarly, two outer vertical bars are connected by a long outer horizontal bar, so that the whole is flat. It is shaped like a rectangular parallelepiped. Here, members close to the building outer wall surface are called inner bars, and members facing outward are called outer bars.

[0010]

In the same scaffolding framework, each scaffolding plate is mounted so as to span between the width bars of the lattice frame. Similarly, the above-mentioned crossover plate connecting the interval portions of the scaffolding frames of the scaffolding frames installed adjacent to each other is attached to the grid-like frame members of the two scaffolding frames by bridging between the opposed width bars. .

The method of installing the crossover is structurally simple. However, when moving each scaffold framework as the construction progresses, first remove all the crossover boards that have been bridged, then move each scaffold framework upward and fix it, and then crossover and attach the crossover boards again It was necessary and it was troublesome work. The scaffold framework usually has 5 to 10 steps of scaffolding boards, and the work of removing the crossovers for each step and laying them down again requires a lot of manpower and time, and therefore the jumping workability is poor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its objects the task of installing a crossover board to connect between market boards of adjacent scaffold frameworks and the operation of removing the crossover board during jumping. It is an object of the present invention to provide a jumping scaffold crossing mechanism for a building construction work, which can easily and efficiently perform the above.

[0013]

Accordingly, in the present invention, a scaffolding frame comprising a plurality of scaffolding boards horizontally mounted on a grid-like frame composed of vertical and horizontal bars is suspended on the outer wall surface of the building under construction. In a building construction work jumping scaffold of a method of moving the entire scaffold framework upward with the progress of construction by installing in a shelf type, the grid-like structure supporting the end of the scaffold plate of each step or the end thereof. A crossover plate is attached to the width bar of the frame body by a hinge structure, and the crossover plate is rotated upward from a substantially horizontal posture to be displaceable to a substantially vertical or obtuse angle posture, and the crossover plates of each stage are parallel to each other. A crossover mechanism linked by a wire rope connected vertically in the state is provided.

In addition to the above configuration, preferably, a pulley provided at an upper portion of the scaffold framework is wrapped around the upper side of the wire rope and tied to a winder provided at an intermediate portion of the scaffold framework.

[0015]

When the wire rope is pulled upward, the crossover plates of the respective steps are interlocked with each other, and rotate upward about the respective hinges to assume a substantially vertical or obtuse angle posture. In this state, each crossing board is snuggling to the scaffold framework and there is little protrusion. Therefore, when the scaffold framework is jumped and moved upward, it does not interfere with the adjacent scaffold framework.

After the two adjacent scaffold frameworks are jumped upward and fixed, and then the wire ropes are lowered, the connecting plates of the respective steps are interlocked with each other, and each of them is pivoted downward about the hinge to be substantially horizontal. Posture, the tip side of which overlaps the end of the adjacent scaffold. This means that the market plates of the adjacent scaffold frameworks are connected by the crossover plate.

[0017]

FIG. 1 shows an overall configuration of an embodiment of a jumping scaffold for building construction work to which the present invention is applied, FIG. 2 shows details of a support mechanism of a scaffold framework, and a main part of the present invention. Details of the transition plate mechanism are shown in FIGS. In FIG. 1, A indicates a building under construction, A (i) indicates a floor slab of the i-th floor, and A (i-1) indicates a floor slab of a floor below it. B refers to the entire scaffold framework. The scaffold framework B is composed of a grid-like frame 1 composed of vertical and horizontal bars, and a plurality of stages of scaffold plates 2.
Is horizontally mounted, and is installed on the outer wall 3 of the building A in a hanging shelf manner by the following support mechanism.

The lattice-shaped frame 1 of the scaffolding framework B has an inner vertical bar 1a and an outer vertical bar 1b which are arranged in parallel with an interval corresponding to the width of the scaffold plate 2, and these two vertical bars are provided. The members 1a and 1b are connected by a horizontal short bar 1c. Also, two inner vertical bars 1a having a relatively large interval are connected by a long inner horizontal bar 1d, and similarly, two outer vertical bars 1b are connected by a long outer horizontal bar. The whole is flat and upright rectangular parallelepiped. Here, a member close to the building outer wall surface 3 is called an inside bar, and a member facing the outside is called an outside bar.

The actual height of the scaffold framework B is about three stories of the building A, and the intermediate horizontal reinforcing plate 4 is located at about one third from the bottom.
And a similar upper horizontal reinforcing plate 5 is provided at the top. As shown in detail in FIG. 2, the vertical bar members 1a and 1b constituting the lattice-shaped frame 1 penetrate the intermediate horizontal reinforcing plate 4, and at the penetrating portion, these are fastened to each other by the clamps 6. It is fixed. In the same structure, the upper horizontal reinforcing plate 5 and the bar of the lattice frame 1 are fixed. These two horizontal reinforcing plates 4 and 5 also serve as scaffold plates. By the two horizontal reinforcing plates 4 and 5 also serving as a scaffold plate and the five-stage scaffold plate 2, a total of seven scaffold frames B are provided.
A step scaffolding stage is configured.

The entire scaffold framework B is mainly composed of the bracket 7
And installed on the outer wall surface 3 of the building in a hanging shelf manner. The bracket 7 has a vertical support 7b and an oblique support 7c at a lower end portion of the horizontal support 7a so as to form a right triangle.
And an integrated member of steel material.

As shown in detail in FIG.
1, the base of the horizontal support 7a of the bracket 7 is fixed by an anchor bolt 8 protruding from the floor slab A (i) in the example of FIG.
And the front vertical support member 7b is in contact with the building outer wall surface 3. Similarly, floor slab A of building A
A plurality of brackets 7 are attached to (i), and the horizontal support members 7a of each bracket 7 are horizontally arranged. Then, the intermediate horizontal reinforcing plate 4 of the lattice frame 1 is placed on the horizontal support 7a of each bracket 7, so that the scaffold framework B
Is supported by each bracket 7 as a whole.

As shown in FIG. 1, an anchor bolt 9 is provided on the outer wall surface 3 of the building, and a connecting member 10 attached to the anchor bolt 9 connects the inner vertical bar 1a of the lattice frame 1 to the outside of the building. The wall 3 is connected to the wall 3 at a predetermined interval. As described above, the weight of the scaffold framework B is exclusively supported by the bracket 7, but as described above, the connecting member 10 connects the inner vertical bar 1a and the building outer wall 3 at the required places, The installation posture and strength of the scaffold framework B are further stabilized, and the work can be performed safely.

As schematically shown in FIG. 1, guide arms 11 are attached to key portions of the inner vertical bar 1a of the lattice-shaped frame 1, and the distal end of each guide arm 11 is attached to the outer wall 3 of the building.
, And a guide roller 11 a attached to the distal end of each guide arm 11 is brought into contact with the building outer wall surface 3.

As described above, the intermediate horizontal reinforcing plate 4 is disposed at about one third from the bottom of the height of the scaffold framework B, and as shown in FIG. (I) The intermediate horizontal reinforcing plate 4 is placed on the bracket 7 mounted on the upper part, so that the scaffold framework B is installed in a hanging shelf type. Then, the scaffold framework B above the intermediate horizontal reinforcing plate 4 projects above the floor slab A (i). Using this scaffold framework B, the construction work of the upper part of the building A is further advanced (anchor bolts necessary for the outer wall 3 and the floor such as the parts A (i + 1) and A (i + 2) constructed by the construction) Attach).

A new building upper part A (i +
If 1) or A (i + 2) is constructed, the above-mentioned connecting tool 10 is removed once, the entire scaffold framework B is pulled up from the top of the new building by using a chain block, etc. The reinforcing plate 4 is located slightly above the bracket 7 which is newly provided in the newly-installed building.
In this state, a new bracket 7 is attached. afterwards,
The scaffold framework B is slightly lowered, and the intermediate horizontal reinforcing plate 4 is placed on the new bracket 7. Further, important points of the scaffold framework B are connected to the building outer wall surface 3 by the connecting tool 10. With this, the upper part of the scaffold framework B is in the same state as described above protruding further above the new building portion, and the construction work of the further upper part of the building A is advanced using this scaffold. In this way, the scaffold framework B is moved upward with the progress of the construction.

When the scaffold framework B is lifted upward by using a chain block or the like as described above, the guide roller 11a at the tip of each guide arm 11 attached to a necessary portion on the inner surface side of the scaffold framework B has the outer wall 3 Because it is in contact with
A predetermined distance is always maintained between the scaffold framework B and the outer wall surface 3, and the scaffold framework B moves stably along the outer wall surface 3 while the roller 11 a rotates.

FIGS. 3 and 4 show details of the transition plate mechanism which is a main part of the present invention. As shown in FIG. 3, the crossover plate 15 is attached to the end of the front scaffold plate 2 of each step or the width bar 1c of the lattice frame 1 supporting the end of the front scaffold plate 2 by a hinge structure.
Reference numeral 16 denotes the hinge axis. The transfer plate 15 rotates about a hinge shaft 16 as shown by an arrow, and can be displaced from a substantially horizontal posture to a substantially vertical or obtuse posture in an upward rotation. A hole 15a passes through the crossover plate 15 of each stage at a predetermined position.
A wire rope 17 is vertically inserted into the through hole 15a to connect the remarkable crossover plates 15 in a state of being parallel to each other, and wire clips 17a are fixed to the wire rope 17 at required intervals. Further, the pulleys 18 and 19 provided on the upper part of the scaffold framework B are wound around the upper side of the wire rope 17 and guided downward, and the winding machine 20 provided on the upper part of the intermediate horizontal reinforcing plate 4 of the scaffold framework B is provided. Tied to

As shown in FIG. 4, when the wire rope 17 is wound by the winder 20, the wire rope 17 is pulled upward, and each wire clip 17a is hooked around the hole 15a through the crossover plate 15. Then the transition board 1 of each stage
5 cooperate to rotate upward about the respective hinge shafts 16 and fall down into the scaffold framework B due to the remaining force, and assume an obtuse angle posture. In this state, since each crossing board 15 has fallen into the scaffold framework B, it is stable, and there is almost no protrusion. Therefore, when the scaffold framework B is jumped and moved upward, it does not interfere with the adjacent scaffold framework B. In the above embodiment, the transition plate 15 has an obtuse angle. However, the cross plate 15 may have an almost vertical position without being obtuse.

After the two adjacent scaffold frameworks B and B are moved upward by jumping and fixed, and then the wire rope 17 is lowered, the crossover plates 15 of each step are interlocked, and each of the crossover plates 15 is turned downward around the hinge shaft 16. It moves to a substantially horizontal posture, and its tip side overlaps the end of the adjacent scaffold plate 2.
Thus, the market plates 2 of the adjacent scaffold frameworks B and B are connected by the crossover plate 15.

[0030]

In the transition plate mechanism according to the present invention, when the wire rope is pulled upward, the transition plates of the respective stages are interlocked, and are pivoted upward about the respective hinges to be substantially vertical or obtuse. become. This is a state in which each crossing board is withdrawn, and the scaffold framework can be jumped and moved as it is. In addition, when the wire rope is lowered, the connecting plates of the respective steps are linked, and each of the connecting plates is pivoted downward around the hinge so as to be in a substantially horizontal posture, and the leading end side thereof overlaps the end of the adjacent scaffold plate. This means that the market plates of the adjacent scaffold frameworks are connected by the crossover plate. In this way, the operation of installing the crossover plate for connecting the market plates of adjacent scaffold frameworks and the operation of removing the crossover plate at the time of jumping can be performed much more easily and efficiently than before.

Further, if a configuration is provided in which the upper side of the wire rope is wrapped around a pulley provided on the upper part of the scaffolding frame and connected to a winding machine provided at an intermediate portion of the scaffolding frame, the structure can be mounted on the scaffolding frame. An operator can easily operate the wire rope, and the workability is further improved.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an overall configuration of an embodiment of a building construction work jumping scaffold to which the present invention is applied.

FIG. 2 is a perspective view of a main part of a support mechanism of the scaffold framework in the embodiment.

FIG. 3 is a partial detailed view of a bridge mechanism which is a main part of the present invention in the embodiment.

FIG. 4 is a schematic view showing a state in which a scaffold framework provided with the above-mentioned jog bridge mechanism is installed adjacent to another scaffold framework.

[Explanation of symbols]

 Reference Signs List A Building B Scaffold framework 1 Grid frame 1a Inner vertical bar 1b Outer vertical bar 1c Wide bar 2 Scaffolding plate 3 Outer wall or outer wall 4 Intermediate horizontal reinforcing plate 5 Upper horizontal reinforcing plate 6 Clamp 7 Bracket 7a Horizontal support 7b Vertical support material 7c Diagonal support material 8 Anchor bolt 9 Anchor bolt 10 Connector 11 Guide arm 11a Guide roller 15 Crossover plate 16 Hinge shaft 17 Wire rope 18, 19 Pulley 20 Winding machine

Continued on the front page (72) Inventor Mitsuyuki Yasuhara 35, Nishimachi, Chuo-ku, Kobe, Hyogo Prefecture Inside Obayashi Corporation Kobe Branch (72) Inventor Yuji Yamashita 35, Nishimachi, Chuo-ku, Kobe City, Hyogo Prefecture Inside Obayashi Corporation Kobe Branch (72) Inventor Shigekazu Sakurai 35 Nishimachi, Chuo-ku, Kobe, Hyogo Prefecture Inside Obayashi Corporation Kobe Branch (72) Inventor Tsuyoshi Watanabe 35, Nishimachi, Chuo-ku, Kobe City, Hyogo Prefecture Inside Kobe Branch, Obayashi Corporation (72) Inventor Kei Sakamoto 35 Nishimachi, Chuo-ku, Kobe City, Hyogo Prefecture Inside Obayashi Corporation Kobe Branch (72) Inventor Tetsuro Ito 35 Nishimachi, Chuo-ku Kobe City, Hyogo Prefecture Obayashi Corporation Kobe Branch Co., Ltd. Int.Cl. ⁷ , DB name) E04G 3/02-3/10 E04G 5/06-5/08

Claims (2)

(57) [Claims] 1. A scaffolding framework comprising a plurality of scaffolding boards horizontally mounted on a grid-like frame composed of vertical and horizontal bars is installed on an outer wall surface of a building under construction in a hanging shelf manner, and the progress of construction is progressing. In the building construction work jumping scaffold of a method of moving the entire scaffold framework upward with the crossing plate to the end portion of the scaffold plate of each step or the width bar member of the grid-like frame supporting the end portion. Attached with a hinge structure, this crossover plate is pivoted upward from a substantially horizontal position and can be displaced to a nearly vertical or obtuse angle position, and the crossover plates at each stage are linked in parallel with each other by wire ropes that connect up and down A jumping plate mechanism of a jumping scaffold for building construction work, which is connected. 2. The scaffold framework according to claim 1, wherein a pulley provided on an upper portion of the scaffold framework is wrapped around an upper side of the wire rope and connected to a winding machine provided at an intermediate portion of the scaffold framework. Jumping board mechanism for jumping scaffolding for building construction work.