JP3243177B2 - Hoistway scaffolding equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hoistway work scaffolding device used when performing work on a counterweight in an elevator hoistway.

[0002]

2. Description of the Related Art FIG. 13 is a side view showing an example of a state of work on a conventional counterweight, and FIG. 14 is a front view of FIG. In the figure, 1 is a main rope, 2 is a counterweight connected to the main rope 1, and 3 is a counterweight 2
A rope shackle 4 for connecting the main rope 1 to the bridge 4 is a square member for fixing the counterweight 2 at the time of work, and 5 is a ladder to be a scaffold at the time of work.

[0003] In the above-described counterweight 2, for example, when attaching and detaching the rope shackle 3, the counterweight 2 is fixed on the square bar 4, and a ladder 5 of a required length is hung thereon. Scaffold. However, when the pit of the hoistway is deep, or when the height of the counterweight 2 is high like a high-speed elevator, the ladder 5 cannot be used. Therefore, a simple scaffold is provided in the hoistway.

FIG. 15 is a side view showing another example of the state of work on a conventional counterweight, and FIG. 16 is a plan view of FIG. In the figure, reference numeral 6 denotes a simple road plate passed between the landing floor and the counterweight 2.

[0005] In this example, the height of the counterweight 2 with respect to the landing floor is adjusted in advance with the square bar 4 so that the simple road board 6 is installed horizontally. Then, the simple road plate 6 is hung on the counterweight 2 from the landing floor, and work is performed across the simple road plate 6.

[0006]

When the ladder 5 is used among the conventional working scaffolds as described above, the work is performed on a narrow crossbar and the height may not be sufficient. There was a problem that it decreased. In addition, when the simple road board 6 is used, the work is performed on the unstable simple road board 6, so that there is a problem that the workability is also lowered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is easy to assemble, stably perform work, and improve workability. It is intended to obtain a scaffolding device for road work.

[0008]

According to a first aspect of the present invention, there is provided a scaffolding apparatus for hoistway work, comprising a pair of fixing members fixed to a pair of counter rails for guiding a counterweight, and a fixing member fixed between these fixing members. And a guide rail, one end of which is placed on the landing floor, and the other end of which is supported on the fixing member, and is slid along the guide rail and installed between the landing floor and the fixing member. And a plurality of treads mounted on the frame material.

A scaffolding apparatus for hoistway work according to a second aspect of the present invention is provided with a pair of guide rails and a pair of frame members, and the pair of frame members are connected to each other by a plurality of connection fittings.

According to a third aspect of the present invention, in the hoistway working scaffolding device, the tread is attached to the frame member by a one-touch type fastener.

According to a fourth aspect of the present invention, there is provided a scaffolding device for hoistway work, wherein a jump-up prevention metal fitting is provided on the frame member to contact a lower portion of the fixing member to prevent the frame member from jumping up.

In the scaffolding device for hoistway work according to a fifth aspect of the present invention, the flip-up preventing bracket is attached to the frame member via an adjusting spring so that the vertical position can be adjusted.

According to a sixth aspect of the present invention, there is provided a scaffolding device for hoistway work, wherein a handrail having a lower end inserted into a plurality of cylindrical handrail insertion portions provided on a frame member and standing upright on both sides of a tread plate; A handrail insertion portion and a stopper member which has a stopper pin inserted into a stopper hole provided at a lower end portion of the handrail and which is elastically attached to an outer peripheral portion of the handrail insertion portion are provided.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a hoistway working scaffolding device according to an embodiment of the present invention, and FIG.
It is a side view which shows the attachment part to the counter rail of the apparatus of FIG.

In the figure, 11 is a counter weight 2
A pair of counter rails for guiding (FIG. 6), 12 is a pair of fixing brackets (rail clips) fixed to the pair of counter rails 11 using bolts or the like, and 13 is a bolt between the pair of fixing brackets 12. A fixing member 14 having a U-shaped cross section fixed horizontally using a pair of parallel guide rails 15 each having one end placed on the landing floor and the other end locked to the fixing member 13, 15. Are a pair of frame members provided between the landing floor and the fixing member 13 along the guide rails 14, respectively. The frame members 15 are provided with a plurality of cylindrical handrail insertion portions 15a. I have.

Reference numeral 16 denotes a plurality of treads mounted on the frame member 15, 17 denotes an open tread provided between the treads 16 and having an opening for passing a balancing rope (not shown), 18
Is a one-touch type stopper (snap lock) for fixing the treads 16 and 17 to the frame member 15, and FIG. 3 is a side view showing an attached state of the stopper 18.

Reference numeral 19 designates a frame member 1 which comes into contact with a lower portion of the fixing member 13 and
5 is an L-shaped bounce-prevention bracket for preventing the bounce-up of 5, and as shown in FIG.
It is inserted through a cylindrical insertion portion 15b provided in the frame member 15. An adjusting portion 19a is provided at an upper end portion of the flip-up preventing bracket 19, and an adjusting spring 20 is provided between the adjusting portion 19a and the insertion portion 15b. By turning the adjusting portion 19a, the vertical position of the flip-up preventing bracket 19 can be adjusted.

Reference numeral 21 denotes a handrail whose lower end is inserted into the handrail insertion portion 15a and is erected on both sides of the tread plate 16, and FIG. 5 is an exploded perspective view showing a mounting portion of the handrail 21. In FIG. 5, reference numeral 22 denotes a retaining member which is elastically attached to the outer periphery of the cylindrical handrail insertion portion 15a.
Reference numeral 2 has a handrail insertion portion 15a and a retaining pin 22a inserted into retaining holes 15c and 21a provided at the lower end of the handrail 21, respectively.

Next, an installation method will be described. First,
As shown in FIG. 6, the car 23 is moved so that the car is located below the landing floor on which the scaffolding device is installed, and the fixing fittings 12 and the fixing members 13 are mounted on the car. In addition, the upper end of the fixing member 13 is adjusted to be at the same height as the landing floor. Next, the car 23 is moved to the upper part of the hoistway, whereby the lowered counterweight 2 is fixed on the timber installed in the pit. At this time, the fixing material 13
Of course, it is fixed at a position that does not hinder the passage of the counterweight 2.

Thereafter, as shown in FIG.
4 is extended from the landing floor and erected between the fixing member 13. Then, the frame 15 is slid from the landing floor along the guide rails 14, and the frame 15 is erected as shown in FIG. Next, as shown in FIG. 9, the pair of frame members 15 are connected by a connection fitting 24. Then, as shown in FIG. 10, the tread 16,
17 is attached. Attachment of connection metal fitting 24 and tread plate 1
As shown in FIG. 11, the treads 16 and 17 are attached to the entire frame member 15 while alternately attaching the treads 6 and 17.

Further, the flip-up prevention metal fitting 19 attached to the frame material 15 is set on the fixing material 13. Finally, the handrail 21 is inserted into the handrail insertion portion 15a, the retaining member 22 is attached, and the handrail 21 is attached to both sides of the passage as shown in FIG. Removal after work may be performed in the reverse order.

By using such a scaffold device,
Work on the counterweight 2 can be performed stably, and work efficiency can be improved. For example, operations such as replacement of a main rope, replacement of a counter hoisting wheel, and replacement of bearings can be performed in approximately half the time in the related art. Further, reciprocation between the vicinity of the counterweight 2 and the landing floor is easy, and evacuation to the landing floor in an emergency can be performed quickly.

Further, the frame member 15 which is relatively heavy among the components
Can be divided into two and installed along the guide rails 14, so that the installation work is easy. Further, since the handrails 21 are provided on both sides of the passage, safety is improved. Since the counterweight 2 side is fixed to the counter rail 11, there is no shaking during work, and it does not fall down due to an earthquake or the like, thereby improving workability and safety.

Furthermore, since the small parts can be transported by being divided into small parts, the transportability is improved. In particular, when the whole is made of a light material such as an aluminum material, the transportability is further improved. Further, since the treads 16 and 17 and the handrails 21 are attached by one-touch without using bolts and nuts, work efficiency is greatly improved.

[0025]

As described above, the scaffolding apparatus for hoistway work according to the first aspect of the present invention has a fixture and a fixing member fixed to the counter rail, and the guide rail is provided between the fixing member and the landing floor. Equipped with a frame material between the landing floor and the fixed material along this guide rail, and a plurality of treads are mounted on the frame material, so that assembly is easy and work is stable. And an effect such that workability can be improved.

In the hoistway working scaffolding device according to the second aspect of the present invention, a pair of guide rails and a frame member are provided, and the pair of frame members are connected to each other by a plurality of connection fittings, so that assembly is further facilitated. Can be

In the scaffolding device for hoistway work according to the third aspect of the present invention, the tread plate is attached to the frame material by one-touch type fasteners, so that bolts and nuts are not used, and assembly is further facilitated. Can be.

In the hoistway working scaffolding device according to the fourth aspect of the present invention, the frame material is provided with a bounce-preventing metal fitting which is in contact with a lower portion of the fixing material to prevent the frame material from being bounced up. And safety and workability can be further improved.

In the scaffolding device for hoistway work according to the fifth aspect of the present invention, the flip-up preventing bracket is attached to the frame member via the adjusting spring so that the vertical position can be adjusted.
The frame member can be more stably installed, and safety and workability can be further improved.

In the scaffolding device for hoistway work according to the sixth aspect of the present invention, the handrail is attached to the frame member by elastically attaching the retaining member having the retaining pin to the outer peripheral portion of the handrail insertion portion. The handrail can be held with a simple structure, and safety and assemblability can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a hoistway working scaffolding device according to an example of an embodiment of the present invention.

FIG. 2 is a side view showing a mounting portion of the apparatus shown in FIG. 1 to a counter rail.

FIG. 3 is a side view showing a mounting state of the stopper of FIG. 1;

FIG. 4 is a configuration diagram showing a flip-up prevention bracket of FIG. 1;

FIG. 5 is an exploded perspective view showing an attachment portion of the handrail of FIG. 1;

FIG. 6 is a plan view for explaining a mounting procedure of FIG. 1;

FIG. 7 is a plan view showing a procedure subsequent to FIG. 6;

FIG. 8 is a plan view showing a procedure subsequent to FIG. 7;

FIG. 9 is a plan view showing a procedure subsequent to FIG. 8;

FIG. 10 is a plan view showing a procedure subsequent to FIG. 9;

FIG. 11 is a plan view showing a procedure subsequent to FIG. 10;

FIG. 12 is a plan view showing a procedure subsequent to FIG. 11;

FIG. 13 is a side view showing an example of a state of work on a conventional counterweight.

FIG. 14 is a front view of FIG.

FIG. 15 is a side view showing another example of a state of work on a conventional counterweight.

FIG. 16 is a plan view of FIG.

[Explanation of symbols]

2 Counter weight, 11 Counter rail, 12
Fixing bracket, 13 Fixing material, 14 Guide rail, 15 Frame material, 15a Handrail insertion part, 15c, 21a Retaining hole, 16 tread, 18 Stopper, 19 Bounce prevention fitting, 20 Adjusting spring, 21 Handrail, 22 Retaining Member, 22a retaining pin, 24 connecting bracket.

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B66B 7/00 E04G 1/36

Claims (6)

(57) [Claims] 1. A pair of fixing brackets fixed to a pair of counter rails for guiding a counterweight, a fixing member fixed between these fixing brackets, one end is placed on a landing floor, and the other end is mounted on a landing floor. A guide rail supported on the fixing member, a frame member slid along the guide rail and installed between the landing floor and the fixing member, and a plurality of treads mounted on the frame member. A scaffold device for hoistway work, comprising: 2. The hoistway work scaffolding device according to claim 1, wherein a pair of guide rails and a pair of frame members are provided, and the pair of frame members are connected to each other by a plurality of connection fittings. 3. The hoistway work scaffolding device according to claim 1, wherein the tread is attached to the frame material by a one-touch type fastener. 4. The frame member according to claim 1, wherein a jump-up prevention metal fitting which abuts on a lower portion of the fixing member to prevent the frame member from jumping up is provided on the frame member. The scaffolding device for hoistway work as described in the above. 5. The apparatus according to claim 1, wherein the flip-up preventing bracket is attached to the frame member via an adjusting spring so that the position in the vertical direction can be adjusted. Scaffolding equipment for hoistway work. 6. A handrail whose lower end is inserted into a plurality of cylindrical handrail insertion portions provided on a frame member and is provided upright on both sides of a tread plate, and is provided at each of the handrail insertion portion and the lower end of the handrail. 6. A retaining member having a retaining pin inserted into the retaining hole provided, the retaining member being elastically attached to an outer peripheral portion of the handrail insertion portion. A scaffolding device for hoistway work according to any of the claims.