JPH0432908B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for pre-stretching a curing net to prevent falling of members and materials used during assembly or disassembly of a framework scaffold.

As a fall prevention measure during assembly or dismantling work of framed scaffolding, a main rope support is set on the main frame material of the upper stage of the scaffolding members, and the lifeline attached to the worker is secured to the main rope stretched there. I try to do this.

As a result, falls among workers have become extremely rare, but it has not been possible to prevent the falling of parts and materials used in work.
Passersby are likely to be injured by falling objects.

As a measure to prevent this component from falling,
Some attempts have been made to attach a protective fence such as the one disclosed in No. 108901 to the upper level of the framework scaffolding, but in such cases, when moving the protective fence, the posts of the protective fence must be Not only is it time-consuming to set up the protective fence, as it requires temporary fixing to the framework scaffolding, and the need to re-hook the protective fence that has been lifted separately from the posts to the posts. Workers had to climb onto the topmost frame scaffolding, which had no protective means, to hang the support posts and protective fence together, and no consideration was given to preventing falls during the lifting process.

This invention aims to eliminate the above-mentioned conventional drawbacks and provide a new construction method that can prevent scaffolding members from falling, not only when assembling and dismantling scaffolding members, but also when constructing a protective net. It is something.

In addition, this invention allows the curing net to be stretched above or below the frame scaffold by simply replacing the supports placed on the upper level of the frame scaffold and replacing the lower side of the curing net suspended from the support. This provides a new construction method that allows for

Furthermore, this invention utilizes the main rope supports placed on the upper stage of the framework scaffold for life protection as the hanging supports of the curing net, and the main ropes between the supports and the life lines latched thereto. This provides a new construction method that can prevent parts from falling using a protective net while ensuring the safety of workers.

A feature of the present invention for the above-mentioned purpose is that a plurality of columns having brackets protruding from the upper end are attached to the upper part of the main frame member of the scaffolding member and are placed at required intervals on the upper stage of a framework scaffold that is being assembled or dismantled. A guide rope is attached to each of the other brackets through a flexible pulley installed on a part of the support, so that the upper side of the curing net is connected to the guide rope, and the lower side is attached to the frame scaffolding. The curing net is stretched outside the upper part of the framework scaffold, and by replacing the above-mentioned supports and replacing the lower side of the curing net, the curing net can be placed above or below the framework scaffold before assembly or dismantling work. The aim is to establish a system for the purpose of achieving this goal.

The present invention will be explained in detail below using illustrated examples.

In the figure, 1 is a framework scaffold, 2 is a curing net, and 3 is a curing net 2
The main rope support also serves as a main rope support.

The framework scaffolding 1 has a main frame member 11 formed into a gate shape.
It has a normal structure including footboards 12 and braces 13.

The curing net 2 is made of a single piece of fine rope 21 made of synthetic fibers woven into a rectangular shape, sewn together using eyelets 23 penetrating the peripheral reinforcing edges 22 and binding cords. It is made of aluminum and is waterproof.

As clearly shown in FIGS. 2 and below, the pillar 3 has a main rope hanging plate 32 attached to the lower end of the pillar member 31 on its abdomen.
It has a mounting bracket 34 with a hinge 33, and a bracket 35 for suspending the curing net is protruded from the upper end. These pillars 3 are arranged at required intervals on the upper stage of the framework scaffolding 1, and the pillar 3 located in the center of them is
As shown in FIG. 4, a pair of swivel pulleys 4, 4 are suspended from the bracket 35 with the braking side facing inside, and the guide rope 5 is attached to the swivel pulleys 4, 4, leaving an extra length 5a. The guide rope 5 is inserted through the guide rope 5 and stretched across the brackets 35 of the support columns 3 on both sides so as to be tensionable and relaxed.

Further, the upper side of the curing net 2 is connected to the guide rope 5 with a ring 51 inserted into the eyelet 23, and the upper side is loosened together with the guide rope 5.
Only the top of the framework scaffold 1 can be opened for the introduction of the main frame material 11.

Reference numeral 6 denotes a metal fitting for folding and latching the lower end portion 24 of the curing net 2. One end is latched to the eyelet on the lower side of the rope 21, and the other end is latched to the main frame material 11.

Reference numeral 7 denotes a main rope, which is stretched horizontally with a tension pulley 8 locked to the main rope hanging plate 32.

Next, using scaffold assembly work as an example, the pre-stretching process of the curing net will be explained in order with reference to FIGS. 2 and 3.

First, as shown in Figure 2, once the assembly of the scaffolding members on the top tier A is completed, the main frame member 1
The support column 3 fixed to the vertical frame 11a of No. 1 with the mounting bracket 34 is transferred to the main frame material 11 of the uppermost stage A.

This replacement work can be performed on the scaffolding of the upper tier B, where the main frame material 11 of the top tier A has been assembled, and even if parts fall during the replacement work, the fallen parts can be It does not fall to the outside of the net 2, and can be caught by the folded lower end 24 of the curing net 2.

When replacing the pillar 3, first, as shown in FIG. The load and resistance of the curing net 2 at the time of replacement are reduced as much as possible so that the work can be easily performed.

This work of relaxing and loosening the guide rope 5 is performed by removing the braking members of the movable pulleys 4, 4 by operating the extra length 5a hanging between the pair of movable pulleys 4, 4, and then the braking member is re-routed to the guide rope 5. This can be done very easily by stretching the extra length 5a so that it does not get caught.

Once the curing net 2 has been suspended as described above, the hinge 33 is opened, the mounting bracket 34 is removed from the vertical frame 11a, and the mounting bracket 34 is attached again to the main frame member 11 of the uppermost stage A. The pillar 3 is fixed to the upper part of the vertical frame and is placed above the top step A of the assembled scaffold 1.
Then, the guide rope 5 is hooked to the joint pin 9 inserted into the upper end of the vertical frame of the main frame member 11, and after the upper part of the curing net is fixed so as not to be blown by the wind, the upper scaffolding members are taken in. Needless to say, this retrieval work is carried out after ensuring the safety of the workers by latching the lifeline to the main rope that has been stretched in advance.

Therefore, even if the loading work is performed on the top step A of the assembly scaffold 1, accidents such as falls will not occur.

When the loading work is completed, the lower end 24 of the curing net 2 is folded back and replaced with the main frame material 11 of the upper tier B, and the guide rope 5 is removed from the joint pin 9 and the extra length 5a is pulled. Tension the guide rope 5.

Due to this tension, the upper side of the curing net 2 is pulled up to the bottom of each bracket 35, and as shown in FIGS.
The assembly scaffold 1 is stretched upward from the upper second stage in the state shown in the figure, and the tension is maintained by the braking members of the adjustable pulleys 4, 4.

In this way, the curing net 2 is stretched outside the upper part of the assembled scaffold 1, and then the scaffold members taken in earlier are assembled. By repeating the same process as above each time the assembly is completed, the protection net 2 can be always stretched prior to the assembly work, and the protection net 2 can be used to prevent falling accidents. be able to.

Further, since a sufficient space can be secured between the assembled scaffold 1 and the curing net 2, it is possible to carry out work for attaching soundproof boards and the like to the assembled scaffold 1 inside the curing net 2.

In addition, the preliminary tensioning of the curing net 2 in the dismantling work can be carried out by replacing the pillars 3 with the lower main frame material 11, contrary to the above-mentioned assembly work, and the process for the preliminary tensioning is the same as in the case of assembly. Since it is the same as that, its explanation will be omitted.

As described above, this invention suspends the curing net 2 from a plurality of pillars 3, 3 which are placed on the upper level of the assembled scaffolding 1 so that the pillars 3, 3 can be rearranged and the curing net 2 can be replaced. With the replacement of the lower side, the curing net 2 is stretched outside the work area prior to assembly or disassembly work, so the curing net 2 reliably prevents accidents caused by falling parts, etc. during work. be able to.

In addition, the curing net 2 is suspended from each pillar 3 using a flexible pulley 4 via a guide rope 5 stretched across the bracket 35 of each pillar 3 so as to be tensionable and relaxed, and the guide rope 5 is operated. Since the upper part of the curing net can be opened and closed freely, the curing net will not be damaged when taking in parts or materials.

In addition, the safety net can be stretched using the main rope support as a support, so the main rope can help prevent workers from falling.
Since the falling of members, etc. can be divided by the protection net, safety is further improved and work can be carried out with peace of mind.

Furthermore, when replacing the pillars, the upper side of the protective net can be placed on the assembly scaffolding to reduce the burden on the pillars due to the protective net, so it does not require a lot of effort to raise and lower the pillars, making the replacement work a simple method. It has many features such as being extremely easy to perform.

[Brief explanation of drawings]

The drawings illustrate the method for pre-stretching a curing net according to the present invention, and FIG. 1 is a front view of an assembled scaffold with a curing net stretched on the outside of the upper part, and FIGS. Side view of the upper part of the assembled scaffold showing the process, No. 4
The figure is a front view of a column provided with a swivel pulley. 1... Assembled scaffolding, 2... Protection net, 3... Support column,
4...Swivel pulley, 5...Guide rope, 6...Latch fitting, 7...Main rope, 11...Main frame material.

Claims (1)

[Scope of Claims] 1. A plurality of columns with brackets protruding from the upper ends are attached to the upper part of the main frame material of the scaffolding members and are placed at required intervals on the upper stage of the framework scaffold that is being assembled or dismantled. A guide rope is tensioned and loosened freely over the other brackets via a flexible pulley provided on a part of the support, and the upper side of the curing net is connected to the guide rope, and the lower side is hooked to the framework scaffolding. Then, the curing net is stretched outside the upper part of the framework scaffold, and by replacing the above-mentioned supports and replacing the bottom side of the curing net,
A method for pre-stretching a curing net in a framed scaffold, characterized by stretching the curing net above or below the framed scaffold before assembly or dismantling work. 2. The method for pre-stretching a curing net in a framework scaffold according to claim 1, wherein the support is comprised of a parent rope support with a bracket protruding from the upper end.