JP3111854B2 - Elevating guide mechanism of jumping scaffold for building construction - 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 scaffold framework is easily suspended in a vertical direction along a building outer wall, and more particularly, to stably move the scaffold framework up and down. The improvement of a lifting guide mechanism.

[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.

Further, when the scaffold framework is pulled upward along the outer wall of the building by a chain block or the like, the scaffold framework can be moved stably without maintaining a predetermined distance between the scaffold framework and the wall surface. In addition, the following elevating guide mechanism is additionally provided.

A vertical rail member made of channel steel or the like is provided as a part of the inner vertical bar in the lattice frame. On the other hand, the guide arm is attached by an anchor bolt provided on the outer wall surface of the building, and the guide arm is projected from the wall surface. . Then, the guide roller at the tip of the guide arm has a positional relationship of engaging with the vertical rail member. By this engagement,
While the position of the vertical rail member is regulated by the guide roller fixed to the building outer wall side, the scaffold framework moves stably in the vertical direction.

[0009]

As described above, the conventional elevating guide mechanism is constituted by a vertical rail member of a scaffold framework and a guide arm fixed to a building. Although a solid guide function can be expected, the provision of the vertical rail members increases the weight of the scaffold framework, and also increases the material cost and assembly cost of the framework. Also, it is necessary to mount a number of guide arms on the building side and accurately align them so that they all smoothly engage the vertical rail members of the scaffold framework. The on-site installation work of such a guide arm is very troublesome, and takes time and trouble.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a jumping scaffold for building construction work in which a scaffold framework is easily installed in a hanging shelf manner along the outer wall of a building. An object of the present invention is to provide a simple and inexpensive ascending and descending guide mechanism capable of stably moving a scaffold framework without swinging while maintaining a predetermined distance from a wall surface.

[0011]

In SUMMARY OF for the] Therefore the present invention, Ri Na attach the scaffold plate of the plurality of stages horizontally in a lattice-like frame structure that comprises a vertical and horizontal bar, and were provided with an intermediate horizontal reinforcing plate legs <br/> Fix the base of the frame framework to the floor slab of the building under construction.
On the horizontal support with the end protruding toward the building outer wall,
Building construction work in which a horizontal reinforcement plate is placed and supported, so that it is installed on the outer wall of the building under construction in the form of a hanging shelf, and the entire scaffold framework is moved upward as the construction progresses In the jumping scaffold, a guide arm was attached to a required portion of the lattice-shaped frame, and a distal end side of the guide arm was protruded toward the outer wall surface of the building by a predetermined length, and attached to a distal end of the guide arm. An elevating guide mechanism for bringing a guide roller into contact with the outer wall surface of the building (claim 1).

Further, the present invention provides the lattice-shaped frame, wherein the vertical bar comprises an inner vertical bar and an outer vertical bar, and a horizontal width bar connecting the inner vertical bar and the outer vertical bar. The length of the guide arm is longer than the width of the bar, and the guide arm is attached to the outer vertical bar (claim 2).

[0013]

According to the first aspect of the present invention, when the scaffold framework is moved upward as the construction progresses, the scaffold framework is moved upward from the top of the building under construction using a chain block or the like. lift. At this time, the plurality of guide arms protrude toward the outer wall surface of the building by a predetermined length, and the guide rollers at the tips thereof are in contact with the outer wall surface. Therefore, a predetermined distance is always maintained between the scaffold framework and the outer wall surface, and the scaffold framework moves stably along the outer wall surface while the rollers rotate.

According to the second aspect of the present invention, the impact on the inner vertical bar can be reduced, which is useful for reinforcing the lattice frame.

[0015]

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. FIG. 3 shows details of the elevating guide mechanism. FIG.
In A, A indicates a building under construction, A (i) is a floor slab of the i-th floor, and A (i-1) is 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 mounted horizontally, and this is installed on the outer wall 3 of the building A in a hanging shelf manner by the following support mechanism. doing.

The lattice-shaped frame 1 of the scaffold 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 the 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, and similarly, two outer vertical bars 1b are connected by a long outer horizontal bar. It has a rectangular parallelepiped shape standing upright. 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 floors 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 brackets 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.

Further, 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 shown schematically in FIG. 1 and in detail in FIG. 3, a guide arm 11 is attached to a required portion of the inner vertical bar 1a of the lattice-shaped frame 1, and the distal end side of each guide arm 11 is fixed. The guide roller 11a is protruded toward the outer wall surface 3 of the building by a predetermined length, and the guide roller 11a attached to the tip of each guide arm 11 is brought into contact with the outer wall surface 3 of the building.

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 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 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 required portion on the inner side of the scaffold framework B is attached to the outer wall surface 3. Since they are in contact with each other, a predetermined interval 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 rollers 11a rotate.

[0025]

According to the first aspect of the present invention, a plurality of guide arms attached to key points of the scaffold framework project a predetermined length toward the outer wall surface of the building, and the guide roller at the tip thereof is connected to the outer wall surface. Is in contact with Therefore, when the scaffold framework is lifted upward using a chain block or the like from the top of the building under construction with the progress of the construction, a predetermined distance is always maintained between the scaffold framework and the outer wall surface, The scaffold framework moves stably along the outer wall surface while the rollers rotate, and does not damage the outer wall surface.

The guide arm is a very small member as compared with the conventional vertical rail member. Even when the guide arm is mounted on a plurality of scaffold frameworks, the overall weight is considerably lighter than before. Further, since no component of the elevating guide mechanism is provided on the building side, material costs and assembly costs are lower than before. Further, unlike the related art, there is no need to configure the guide mechanism while accurately aligning the elements on the scaffold framework side and the elements on the building side, so that the number of installation operations and time are greatly reduced.

According to the second aspect of the present invention, the impact on the inner vertical bar can be reduced, which is useful for reinforcing the lattice frame.

[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 lift guide mechanism which is a main part of the present invention in the embodiment.

[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 7c Diagonal support 8 Anchor bolt 9 Anchor bolt 10 Connector 11 Guide arm 11a Guide roller

──────────────────────────────────────────────────続 き Continuing 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 Obayashi Corporation Inside the Kobe Branch (72) Inventor Shigekazu Sakurai 35 Nishimachi, Chuo-ku, Kobe, Hyogo Prefecture Inside Obayashi Corporation Kobe Branch (72) Inventor Go Watanabe 35, Nishimachi, Chuo-ku, Kobe City, Hyogo Prefecture Inside Obayashi Corporation Kobe Branch (72) Inventor Kei Sakamoto 35, Nishimachi, Chuo-ku, Kobe, Hyogo Prefecture Inside Obayashi Corporation Kobe Branch (72) Inventor Tetsuro Ito 35, Nishimachi, Chuo-ku, Kobe City, Hyogo Prefecture Inside Obayashi Corporation Kobe Branch (56) Reference Reference JP 4-33948 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04G 3/02-3/10

Claims (2)

(57) [Claims] 1. A Ri name by attaching a scaffolding board of a plurality of stages horizontally in a grid-like frame body made of a rod of vertical and horizontal, and the intermediate horizontal complement
The scaffold framework with slabs is used as a base for the floor slab of the building under construction.
Horizontal support with its front end protruding toward the building outer wall
Place the intermediate horizontal reinforcing plate on the holding material to support it.
By installing a hanging shelf on the outer wall surface of the building under construction, and moving the entire scaffold framework upward with the progress of construction, in a building construction work jumping scaffold, A guide arm is attached to a necessary point, and a distal end of the guide arm is projected toward the outer wall surface of the building by a predetermined length, and a guide roller attached to a distal end portion of the guide arm is brought into contact with the outer wall surface of the building. A lifting and lowering guide mechanism for a jumping scaffold for building construction work. 2. The lattice-shaped frame body includes a horizontal bar in which the vertical bar comprises an inner vertical bar and an outer vertical bar, and connects the inner vertical bar and the outer vertical bar. 2. The building construction jumping according to claim 1, wherein the length of the guide arm is longer than a width bar, and the guide arm is attached to the outer vertical bar. 3. A scaffold elevating guide mechanism.