JPH0620777U - Mobile parent equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a master rope facility in which the master rope can be easily moved and a worker's fall distance can be reduced. [Structure] Scaffolds 5 provided on both sides of aerial work place 10
The track rails 1a and 1b are fixedly attached to a and 5b. The master rope holders 4a to 4d are attached to the rails 1a and 1b.
Is movably attached over the entire length of the rail. Two sets of master rope holders 4a and 4b, and 4c sandwiching the aerial work place 10
The master ropes 3a and 3b are stretched between each of 4 and 4d. By attaching the worker's safety belt movably to the master ropes 3a, 3b, the worker can move freely in the high-place work place 10, and since the rails 1a, 1b have no slack, It is possible to reduce the fall distance when a person crashes.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mobile master rope facility provided to hold a worker's safety belt (lifeline) in a high-place worksite at a construction site.

[0002]

[Prior art]

 Conventionally, ensuring the safety of workers has been regarded as the most important factor in construction sites. Special attention is paid to the accidents that occur during work at high altitudes, since they are fatal to human life.

As such work at a high place, there is a work of laying a veneer board for driving concrete on the floor surface at a construction site. When carrying out this work, it is necessary for the worker to use a safety belt to prevent the work from falling to the floor of the lower floor. This safety belt is further attached to the master rope using a retainer or the like.

In the case of a building having a steel-framed reinforced concrete (SRC) structure, several steel frames are erected in the surroundings. Therefore, by fixing both ends of the master rope to an appropriate height of these steel frames, an operator falls. Even so, the operator's body can be held up by the time it reaches the ground.

However, in the case of a building having a reinforced concrete (RC) structure, since no steel frame is used, there is no one around which the main rope is fixed. Therefore, conventionally, measures have been taken to ensure the safety of workers as shown in the plan view of FIG. That is, in FIG. 4, scaffolds 5a and 5b are provided on both sides of the aerial work place 10, and holding ropes 2a and 2b for holding the master ropes 3a and 3b are fixed to these scaffolds 5a and 5b. . The master ropes 3a and 3b are movably attached to the holding ropes 2a and 2b, respectively, by using a holder or the like. The worker's safety belt is attached to the master rope 3a or 3b.

[0006]

[Problems to be solved by the device]

 In such a conventional structure, when the length of the main ropes 3a, 3b is about 17 m, the fall distance of the worker due to only the slack is about 1.5 m. In addition to this drop distance, a certain length of safety belt is required, so it is necessary to suppress the slack of the holding ropes 2a and 2b as much as possible. Therefore, it is necessary to stretch the holding ropes 2a and 2b with considerable strength. However, if the holding ropes 2a and 2b are strongly stretched, it becomes extremely difficult for the parent ropes 3a and 3b to move with respect to the holding ropes 2a and 2b, which causes a problem that workability is significantly reduced. Further, even if the holding ropes 2a and 2b are strongly stretched, slackening occurs a little, so that it is not possible to prevent the worker's fall distance from increasing.

The present invention has been made in order to solve such a conventional problem, and an object of the present invention is to make it easy to move a master rope and to reduce a fall distance of an operator. It is to provide a master rope facility that can

[0008]

[Means for Solving the Problems]

 The mobile master rope equipment according to the present invention is a mobile master rope equipment that holds a worker's safety belt in an aerial work place with scaffolds installed on both sides, and rails fixed to each of the scaffolds. And a master rope holder movably attached to each of the rails over the entire length of the rail, and a master rope stretched between the master rope holders. Is characterized by.

[0009]

[Action]

 The mobile master rope equipment with the above configuration will be installed using the scaffolds provided on both sides of the aerial work place. That is, rails are attached to a predetermined height of each scaffold, and a master rope retainer having, for example, a pulley is attached to these rails so as to be movable over the entire length of the rails. The master rope is stretched between the master rope holders attached to the rails on both sides of the aerial work place. A safety belt for holding the worker is attached to the master rope so as to be movable along its entire length.

According to this structure, since it is not necessary to consider the slack of the rail at all, it is possible to reduce the fall distance when the worker falls. Therefore, it is possible to ensure the safety of workers without the need for relatively expensive installations such as steel frames. Moreover, since the master rope retainer can move smoothly over the entire length of the rail, the master rope can freely move in the rail installation direction. Further, since the safety belt is movably attached to the main rope as described above, the worker can freely move within the entire area between the installed rails.

[0011]

【Example】

 Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings. FIG. 1 is a plan view of the vicinity of an aerial work place where a mobile master rope facility according to an embodiment of the present invention is installed. Further, FIG. 2 shows a sectional view taken along the line AA of FIG. The mobile master rope facility of this embodiment is installed by using scaffolds 5a and 5b provided on both sides of the aerial work place 10. In this embodiment, the track rails 1a and 1b are fixed to the scaffolds 5a and 5b, respectively. These track rails 1a and 1b are installed over the entire length of the opposite sides of the rectangular aerial work place 10. Further, the master rope holding tools 4a and 4c are attached to the track rail 1a so as to be movable in the entire length direction of the track rail 1a, and similarly, the master rope holding tools 4b and 4d are attached to the track rail 1b. It is mounted so that it can move in all directions. The master rope 3a is stretched between the master rope holders 4a and 4b, and similarly, the master rope 3b is stretched between the master rope holders 4c and 4d. As shown in FIG. 2, a safety belt 6 worn on the waist of the worker is attached to the master ropes 3a and 3b by using a holder or the like so as to be movable along the entire length of the master rope 3a or 3b. There is. In this example, wire ropes were used as the master ropes 3a and 3b.

FIG. 3 shows a detailed view of a portion where the master rope holder 4a is attached to the track rail 1a. The track rail 1b is similar to the track rail 1a. As shown in FIG. 3, the track rail 1a is held by a bracket 11, and the bracket 11 is fixed to a column 15 of the scaffold 5a by a clamp 16. In this embodiment, as shown in FIG. 3, both ends in the cross section of the track rail 1a are folded back inward, and an opening 12 is opened at the center of the folded back portion. The pulley 17 of the master rope holder 4a is located inside. A bolt 18 is attached to the pulley 17, and the tip of the bolt 18 projects to the outside of the track rail 1a. A screw is provided at this tip portion, and an eye nut 19 is screwed into this screw.

A snap hook 20 is hooked on the ring portion 19 a of the eye nut 19, and the master rope 3 a is passed through the snap hook 20 and is fixed by wire clips 21, 21 ,. The end portion of the master rope 3a is further directly passed through the ring portion 19a of the eye nut 19, and is fixed to the master rope 3a itself by the wire clips 22, 22 ... Therefore, the master rope 3a is held by the ring portion 19a of the eye nut 19 through the snap hook 20, and if the holding portion such as the snap hook 20 is damaged, the parent rope 3a is directly connected to the ring portion 19a. The rope 3a is held. The master rope holder 4a holding the master rope 3a in this manner is movable over the entire length of the track rail 1a, as shown in FIG.

According to the mobile master rope equipment of the present embodiment, the master rope holders 4a to 4d can smoothly move over the entire length of the track rails 1a and 1b, so that the master ropes 3a and 3b can be moved by the rails. It can be moved freely in the installation direction. Further, since the safety belt 6 for holding the worker is attached so as to be movable along the entire length of the master ropes 3a, 3b, the operator is required to work in the aerial work place 10 between the installed track rails 1a, 1b. It can be easily moved to any position.

Further, in the present embodiment, it is not necessary to consider the slack of the track rails 1a and 1b at all, so that it is possible to reduce the drop distance of the operator. Further, when the worker falls, the slack is caused only by the master rope 3a or 3b, so that the shock received by the worker can be softened by the appropriate elasticity due to the slack of the master rope 3a or 3b.

In the present embodiment, as shown in FIG. 2, the fall distance of the operator is represented by the sum (S + L) of the slack S of the master rope 3a and the length L of the safety belt 6. Furthermore, the sum (S + L + T) of the sum (S + L) and the length T from the waist to the head wearing the worker's safety belt 6 is calculated from the distance H from the falling surface 23 to the master rope 3a. If it is small, the worker will be held by the master rope 3a through the safety belt 6 before reaching the falling surface 23 even if the worker falls. In this example, the length of the master rope 3a was 17 m, and the slack S at the center of the master rope 3a when a weight of 80 kg was hung on this was about 1.5 m. Further, in the present embodiment, the safety belt 6 has a length L of 1.5 m, and the worker has a length T from the waist to the head of about 1 m. The total of these numerical values is about 4 m, and accordingly, the master rope 3a may be stretched at a position above the falling surface 23 of FIG. 2 by about 4 m or more.

In the present embodiment, the openings 12 of the track rails 1a and 1b are attached to the pillars 15 of the scaffold so that the openings 12 are oriented right next to each other. By attaching the track rails 1a and 1b according to the direction of slackening, the master ropes 3a and 3b can be moved more smoothly.

[0018]

[Effect of device]

 According to the mobile master rope equipment of the present invention, since the rail is not loosened at all, the fall distance when the operator falls can be shortened. Therefore, it is possible to ensure the safety of workers even in RC construction sites where there are no relatively expensive installations such as steel frames. Moreover, the master rope retainer can be smoothly moved along the entire length of the rail, and the safety belt is movably attached to the master rope, so that the worker can move within the entire area between the installed rails. It becomes possible to move freely.

[Brief description of drawings]

FIG. 1 is a plan view of the vicinity of an aerial work place in which a mobile master rope facility according to an embodiment of the present invention is installed.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a detailed view of a portion where the master rope holder is attached to the track rail.

FIG. 4 is a plan view of a conventional high-place work place with a main rope.

[Explanation of symbols]

 1a, 1b ... Track rails 3a, 3b ... Parent rope 4a, 4b, 4c, 4d ... Parent rope holders 5a, 5b ... Scaffolding 6 ... Safety belt 10 ... Workplace 11 ... Bracket 16 ... Clamp 17 ... Pulley 18 ... Bolt 19 ... Eye nut 20 ... Snap hook 21, 22 ... Wire clip

Claims (1)

[Scope of utility model registration request] 1. A mobile master rope facility for holding a worker's safety belt in an aerial work place having scaffolds installed on both sides,
A rail fixed to each of the scaffolds, a master rope holder movably attached to each of the rails over the entire length of the rail, and a parent stretched between the master rope holders A mobile parent rope facility characterized by having a rope.