JP2000045535A - Safety device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety device capable of securing safety by sufficiently securing the movement of a worker and making workability good. SOLUTION: A safety device 10 for preventing a falling risk in the case where a worker works at a high place is provided with a fixing means 14 attached and fixed to the worker, a connection member 11 connected to the fixing means 14 at one end side, a sliding member 12 connected to the other end side of the connection member 11, and a rail member 11 for guiding the slide of the sliding member 12. The connection member 11 has a winding means 13 and a freely pulling rope body 41 wound around the winding means 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for preventing a fall accident used when working on a temporary scaffold or the like at a construction site.

[0002]

2. Description of the Related Art In a construction site, work is sometimes performed on a temporary scaffold installed at a high place. In this case, a safety belt is wrapped around the worker's waist, and one end of the rope is further attached to the safety belt via a connecting device made of, for example, metal in order to prevent a fall accident of the worker and ensure safety. At the same time, the other end of the rope is attached to a predetermined fixing portion such as a steel frame or suspended from the fixing portion.

[0003] In this case, the rope has only a predetermined length, and even if a stretchable rope is used, the maximum stretch length is predetermined. For this reason, only the range of the length of the rope is a work area.

[0004] Therefore, in order for an operator to work in a place other than the work area covered by one rope, the rope attached to the safety belt is once removed, and then the rope is suspended from another fixed part. Attach ropes to safety belts to ensure worker safety before starting work.

In this case, there is a key lock type safety device in order to prevent the worker from accidentally releasing the attached state of the rope. In this key lock type safety device, the attached state of the initially installed rope is not released unless another rope is inserted through the safety belt, so the safety belt is always attached to the safety belt at any time Is attached.

Accordingly, even if the worker steps off the scaffold at any time, sufficient safety is ensured by the ropes, and thus, a fall accident can be prevented.
At the end of the work, the rope can be finally removed from the safety belt by inserting the key into the safety belt.

[0007]

As described above, in the configuration in which the safety belt is wound around the worker's waist and the rope is attached to the safety belt, it takes time and effort to remove the rope from the operator. If the user frequently moves to the work area, the workability deteriorates.

Further, as described above, the length of the rope is limited in advance, and the work area is limited to a range in which the rope can be moved by the length of the rope. However, there have been cases in which work is performed without mounting the safety device.

For this reason, there is a demand for a safety device capable of ensuring sufficient safety and having good workability. The present invention has been made based on the above circumstances, and an object of the present invention is to provide a safety device capable of ensuring sufficient movement of an operator to improve workability and ensuring safety. It is.

[0010]

According to a first aspect of the present invention, there is provided a safety device for preventing a danger of falling when working at a high place, wherein the safety device is attached and fixed to an operator. Fixing means, a connecting member connected to the fixing means at one end, a sliding member connected to the other end of the connecting member, and a rail member for guiding the sliding of the sliding member. The connecting member includes a winding unit and a rope body wound around the winding unit and capable of being pulled out.

According to a second aspect of the present invention, the winding means is provided with friction means for reducing the speed of pulling out the rope from the winding means when an instantaneous load is applied from the rope. The safety device according to claim 1, wherein the safety device is provided.

According to the first aspect of the present invention, the fixing means is fixed to the worker, the connecting member is connected to the fixing means at one end, and the sliding member is connected to the other end of the connecting member. And a rail member for guiding the sliding of the sliding member, and the connecting member has a winding means, and a rope body which is wound around the winding means and can be pulled out. Even when a worker wants to perform work from the current work area to another work area, the user can easily move to another work area by sliding the slide member with the rail member. . For this reason, it is possible to improve work efficiency.

In addition, when moving to another work area, it is not necessary to remove the rope one by one, so that the worker is always attached to the rope, and sufficient safety is ensured. It has become.

Further, since the rope body is wound around the winding means and can be pulled out from the winding means, it is possible to prevent the rope body from interfering with the operator and lowering the work efficiency.

Further, by connecting a large number of rail members to places to be moved, a work area can be enlarged, and work efficiency can be improved. According to the invention of claim 2, the winding means is provided with friction means for reducing the speed of pulling out the rope body from the winding means when an instantaneous load is applied from the rope body. Even if a worker steps off the scaffold and falls, the instantaneous load received from the rope body for this worker can be reduced.

For this reason, especially when the rope is pulled out for a long time, the energy at the time of drop becomes large, but even in this case, it is possible to effectively reduce the instantaneous load and reduce the damage to the operator. it can.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows the configuration of a safety device 10 according to the present invention. The safety device 10 is connected to a rail member 11, a roller body 12 that can be easily moved with respect to the rail member 11, a telescopic reel 13 that is provided to be able to be disengaged from the roller body 12, and this telescopic reel. It is composed of a safety belt 14.

The rail member 11 is a long member having a predetermined length, and has a rectangular hollow member having a side surface partially cut away as shown in FIG. However, the cross-sectional shape of the rail member 11 is not limited to this, and various shapes are conceivable. In short, any shape may be used as long as it is configured to regulate the roller body 12 from coming off and guide the slide.

The hollow inside of the rail member 11 is a guide groove 20 for guiding the slide of the roller body 12, and is further cut out so that the protruding portion of the roller body 12 projects outward from the guide groove 20. The notch 21 is formed along the longitudinal direction of the side surface of the rail member 11. Thereby, the inside of the guide groove 20 and the outside are configured to communicate with each other.

In order to form the notch 21, both sides of the notch 21 of the rail member 11 are formed with flanges 22, which restrict the roller body 12 from coming off. As shown in FIG. 4, a plurality of such rail members 11 having a predetermined length are connected to each other and attached to a fixed portion such as a steel frame, so that the movable range of the worker is increased. When the rail member 11 is attached to a steel frame or the like, a commonly used fastening tool 23, for example, of a fastening method is provided at predetermined intervals on a side surface opposite to the side surface on which the notch portion 21 is provided. 23 is fixed to the above-mentioned steel frame or the like.

When connecting the rail members 11,
As shown in FIG.
In some cases, they are connected so as to form a ring. In the case of connecting only one line, the longitudinal end of the line is opened and the roller body 12 is inserted therethrough. However, this portion is usually closed to ensure safety.

Further, in the case where a ring is formed by being connected in a rectangular shape as shown in FIG. 4, it is necessary not to deteriorate the slidability of the roller body 12 at the corner of the rectangle. For example, a method of using the rail member 11 having the guide groove 20 that forms a circular arc may be considered. Furthermore, even if such a rail member 11 is not used, depending on the type of the roller body 12, it is possible to adopt a configuration in which the slide can be favorably guided even at a rectangular corner.

The roller body 12 inserted through the guide groove 20 of the rail member 11 is, as shown in FIG.
It has 0. The roller body 30 is provided with a rotatable roller 31 that rolls on the inner wall surface of the guide groove 20. A plurality of the rotating rollers 31 may be attached to the roller body 30, or a single roller may be provided. In FIG. 1, the rotating roller 31 is configured to roll on the side surface where the notch portion 21 exists, but is configured to roll on the upper and lower surfaces of the paper surface where the notch portion 21 does not exist. No problem. Further, even if another member for guiding the slide is provided in addition to the rolling roller 31 that rolls, it is sufficient if the slideability is not deteriorated.

When a pulling force is applied during operation, the rotating roller 31 comes into contact with the notch 21 and has a gap with a surface facing the notch 21. As a result, the rotating roller 31 can roll.

A protruding member 32 is provided so as to protrude outward from the roller body 30 through the notch 21. The protruding member 32 has a hole 33 formed at a protruding end protruding a predetermined length, and a first harken 34 is attached to the hole 33 to connect the protruding member 32 to the first harken 34. Configuration. A second harken 42 provided on the telescopic reel 13 is connected to the first harken 34.

The telescopic reel 13 includes a reel body 40, a rope 41 pulled out from the reel body 40, and a second harken 42 attached to an end of the rope 41.
It is composed of The reel body 40 has an outer casing 43, and the shaft member 44 is provided so as to protrude from the outer casing 43. Further, the reel body 40 has an outlet 45 for the rope 41, and the portion other than the outlet 45 is closed.

The rope 41 may be a normal wire rope or a belt-like member made of a cloth-like member. The shaft member 44 includes a drum body 46.
Is supported. A long hole 47 is formed in the drum body 46, and is supported by the shaft member 44 through the long hole 47. The elongated hole 47 is for sliding the drum body 46 along the same. The elongated hole 47 is usually smaller than the shaft member so that an appropriate biasing force is directed in a direction away from the second harken 42. An elastic member 47a such as a spring is inserted into the upper position so as to prevent the elastic member 47a from falling off. Thus, in a normal state, the drum body 46 is pressed toward the upper side of the sheet of FIG. 2A.

The rope 41 is wound around the drum body 46. In order to improve the pull-out property of the rope 41 wound around the drum body 46, the drum body 46 is used.
A wheel member 48 that is rotatable with respect to the drum body 46 is fitted on the outer peripheral side surface of the drum body 46. Then, the rope 41 is wound around the wheel member 48 and the rope 4
1 is pulled out, the wheel member 48 rotates.

The rope 41 from the wheel member 48
The drawer is provided with an elastic member (not shown) so that an urging force is required. Therefore, when the rope 41 is pulled out from the wheel member 48 and the force applied at the time of pulling out is released, the rope 41 is automatically turned off. Is stored.

Further, since it is necessary to secure the safety of the worker and to secure a certain work area, the rope 41 pulled out is required.
There is a limit to the maximum length that can be pulled out, and as an example, the maximum length at the time of pulling out is set in a range of approximately 2 m to 5 m.

Below the drum body 46, a first brake member 49 is mounted. The first brake member 49 is attached in the vicinity of the outlet 45, and has a gentle slope so as not to impair the pull-out property of the rope 41.

A second brake member 50 is provided near the outlet 45 of the outer casing 43 so as to face the first brake member 49. The second brake member 50 has an inclined surface having the same inclination angle as that of the first brake member 49, and these inclined surfaces come into contact with each other when the drum body 46 moves downward. It has become. Therefore, when the force is applied, the rope 41 is sandwiched between the first brake member 49 and the second brake member 50, and the pull-out of the rope 41 from the outlet 45 is restricted. Have been.

The first brake member 49 and the second brake member 50 are both made of metal, and have a sufficient strength even when a load is applied when dropped. . In addition, each inclined surface is provided so as to generate a predetermined frictional force on the rope 41, and is configured not to be damaged by a load applied at the time of falling.

The rope 41 wound around the drum body 46 has one end attached to the drum body 46 and a second harken 42 attached to the other end. The second harken 42 is rotated about a fulcrum, so that the first
This is a configuration that can be connected to the Harken 34.

On the upper end side of the paper surface of the reel body 40, there is provided a connection fitting 51 for attaching to the safety belt 14. This connecting metal fitting 51 is also provided, for example, in the first
And the second Haken 34, 42.

According to the safety device 10 having such a configuration,
A large number of rail members 11 are connected, a roller body 12 is inserted through the rail member 11, and a safety belt 14 is connected to the roller body 12 via a telescopic reel 13, so that if an operator moves, With this movement, the roller body 12 can be slid and moved in the guide groove 20 of the rail member 11.

As a result, the work area can be extended along the rail member 11 without releasing the connection state by the rope 41, so that the work area of the worker can be enlarged, and the work efficiency can be improved. Can be.

When moving to another work area,
Since it is not necessary to release the connection state of the rope 41 one by one,
There is no need for troublesome work and the rope 41 is always
In this state, workers are connected, so that sufficient safety is always ensured.

Further, since the rope 41 is wound around the telescopic reel 13 and can be freely pulled out from the telescopic reel 13, it is possible to prevent the rope 41 from obstructing the work by pulling out the necessary length. Therefore, it is possible to improve work efficiency.

In particular, when pulling out the rope 41 wound around the wheel member 48, when the rope 41 is pulled out by applying an urging force in a direction in which the rope 41 is stored by an elastic member (not shown). But automatically the rope 41
Can be stored, and thereby the rope 4
1 can be prevented from obstructing the operator, and the convenience can be further improved.

A first brake member 49 and a second brake member 50 are provided on the telescopic reel 13, and the drum body 46 is slid about the shaft member 44. The rope 41 is released from being held by the brake members 49 and 50. However, when an instantaneous load is applied due to the fall of the worker, the drum body 46 moves downward in the drawing, and the rope 41 is first and first. The teaching can be performed by the second brake members 49 and 50.

For this reason, the pull-out speed of the rope 41 is reduced by the frictional force, whereby the instantaneous load applied to the worker from the rope 41 can be reduced. Therefore, the damage caused to the worker can be reduced.

This is particularly effective when the rope 41 is pulled out for a long time. As mentioned above, although one Embodiment of this invention was described, this invention can be variously deformed besides this. This is described below.

In the above-described embodiment, the safety belt 14 wound around the waist is shown in FIG. 1. However, a configuration in which the safety belt 14 is wound around the other body, shoulder, or the like may be used. Further, in the above embodiment, the first brake 49 and the second brake member 5
0 is used to reduce the impact load at the time of a fall, but if it is a configuration that can reduce the impact load at the time of a fall with only one brake member, necessarily two or more brake members are provided. There is no need to change the design as appropriate.
In addition, various modifications can be made without departing from the scope of the present invention.

[0045]

As described above, according to the present invention,
Even when the worker wants to work from the current work area to another work area, the user can easily move to another work area by sliding the sliding member with the rail member. For this reason, it is possible to improve work efficiency.

In addition, when moving to another work area, it is not necessary to remove the rope one by one, so that the worker is always attached to the rope, and sufficient safety is ensured. It has become.

Further, since the rope body is wound around the winding means and can be pulled out from the winding means, it is possible to prevent the rope body from obstructing the operator and reducing the work efficiency.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a safety device according to an embodiment of the present invention.

FIGS. 2A and 2B are cross-sectional views showing the configuration of the telescopic reel according to the embodiment, in which FIG. 2A is in a normal pulled-out state, and FIG. The figure which shows the state which clamps.

FIG. 3 is a diagram showing a cross-sectional shape of the rail member according to the embodiment.

FIG. 4 is a diagram showing a state where the rail members according to the embodiment are connected in a ring shape;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Safety device 11 ... Rail member 12 ... Roller body 13 ... Telescopic reel 20 ... Guide groove 21 ... Notch part 30 ... Roller body 31 ... Rotating roller 32 ... Protruding member 34 ... First harken 40 ... Reel body 41 ... Rope 42 ... second harken 45 ... take-out port 46 ... drum body 47 ... long hole 49 ... first brake member 50 ... second brake member

Claims (2)

[Claims] 1. A safety device for preventing danger caused by dropping when working at a height, comprising: fixing means attached to an operator; fixing means connected to the fixing means at one end; A sliding member connected to the other end of the connecting member; and a rail member for guiding sliding of the sliding member, wherein the connecting member is wound around the winding means, and the winding means. A safety device characterized by having a rope body that can be pulled out and pulled out. 2. The winding means is provided with friction means for reducing the speed of pulling out the rope body from the winding means when an instantaneous load is applied from the rope body. The safety device according to claim 1.