JPH0797804A - End stopper for shock absorbing shelf - Google Patents

Abstract

PURPOSE:To improve a performance by wedging and anchoring the extra length portion of a rope to the cylindrical body of an end stopper, and absorbing an impact force with the rope slidably held on the outer guide of the body at the time of holding the rope with a shock absorbing device laid on a post. CONSTITUTION:A rope 3a extended between posts 2 is led through the semicylindrical guide 7 of an end stopper 5, so as to keep the guide 7 freely slidable. Then, the extra length portion of the rope 3a is inserted in the tapered holding hole 61 of the body 6 via the smaller diameter side thereof. Thereafter, the untwisted wires of the extra length portion 3b of the rope 3a are housed in the corner groove 81 of a presser 8, led through the hole 61 and, then, anchored with an wedge. Also, the resistance blade 82 of the presser 8 is aligned with a groove 63 in the hole 61. As a result, an impact force acting on the rope 3a is transmitted as tension to a shock absorbing device 4, and when tension equal to or above the predetermined value acts, the rope 3a slides, thereby effectively damping impact energy. Furthermore, when a stopper 5 collides with the device 4, impact energy is countered with the rigidity of the posts 2. According to this construction, an impact energy absorption amount can be set at a high level, and an easy mounting work can be ensured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end stopper for a shock absorbing fence used for a rockfall prevention fence or a guard rope.

[0002]

2. Description of the Related Art Shock absorbing fences are used for small and medium-sized rockfall prevention means. The shock-absorbing fences used for this kind of application consist of steel columns standing upright on the hillside, and many ropes are laid horizontally between these columns, or wire mesh is attached to the entire surface of the fence. There is.

[0003]

[Problems to be Solved by the Present Invention]

<B> Impact energy due to falling rocks is attenuated by elastic deformation of rope material and deformation of columns. Therefore, when an impact exceeding the tensile strength of the rope material acts, the rope material cannot be broken.

<B> As a method of increasing the amount of impact energy attenuation, the number of ropes that are laid horizontally between the columns is increased to reduce the load per rope, or high strength ropes and columns are used. It can be used, or multiple impact fences can be installed along the slope. However,
All of these methods are not feasible because of high cost and low damping efficiency.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its purpose is to reduce the damping cost.
An object of the present invention is to provide an end stopper for a shock absorbing fence equipped with a shock absorbing technology capable of improving the damping efficiency of shock energy.

[0006]

SUMMARY OF THE INVENTION That is, the present invention is directed to a shock absorbing device when a rope material is gripped via a shock absorbing device attached to a column and a tension above a certain level is applied to the rope material. In a shock absorbing fence that absorbs impact energy by sliding the rope material, the stopper is fixed to the end of the extra length portion of the rope material, and the extra length portion of the rope material is inserted. And a pressing member that is inserted into the cylindrical body and wedge-fixes the end portion of the rope material, and a semi-cylindrical guide portion is formed on the outer peripheral surface of the cylindrical body. It is an end stopper for a shock absorbing fence.

[0007]

Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings. <A> Impact absorption fence (Fig. 1) The impact absorption fence 1 is composed of a plurality of columns 2 that are built at regular intervals, a plurality of ropes 3a that horizontally bridge the columns 2, and the ropes 3a. And an end stopper 5 attached to the end of the extra length portion 3b of the rope member 3. The impact absorbing device 4 is a gripping tool that grips the rope members 3a and 3b in a state in which the rope members 3a and 3b are allowed to slide when a certain tension is applied to the rope members 3a and 3b, for example, two plate members. It is possible to employ a known device configured by a plurality of bolts that fasten two plate bodies.

<B> End stopper (FIGS. 1 and 2) The end stopper 5 is a rope member 3 in the shock absorbing device 4.
It is a stopper that regulates the amount of sliding of a and 3b, and is formed integrally with a tubular body 6 having a taper hole and a guide portion 7 of a facing semi-cylindrical body. Further, the end stopper 5 includes two rope members 3a, which are held by one shock absorbing device 4 as shown in FIG.
It is set so as to be movable with respect to one rope member 3a, and fixed to the extra length portion 3b of the other rope member 3a.

<C> Cylindrical body (FIGS. 2 and 3) The cylindrical body 6 has a taper-shaped holding hole 61, and the large-diameter opening 6 thereof.
2 is circular and has three grooves 63 radially on the inner surface of the hole from the center.
Is provided. Since the minimum diameter portion of the small diameter opening 64 has a triangular hole shape with respect to the large diameter opening 62, the grip hole 61 is gradually transformed from the circular large diameter opening 62 to the triangular small diameter opening 64.

<D> Semi-cylindrical guide portion (FIGS. 2 and 3) The semi-cylindrical guide portion 7 is formed by the guide portions 7 with the openings of the semi-cylindrical body facing each other. The material 3a can be fitted and mounted. In addition, the groove diameter 71 is the rope material 3
The diameter is set to be larger than the diameter of the rope material 3a so as to allow sliding with a.

<H> Pressing tool (FIGS. 2 and 3) The pressing tool 8 used for gripping the rope material is a cone-shaped pressing tool 8 having a substantially triangular cross section, and is formed on the outer peripheral surface of this triangular cross section. Three
A plurality of grooves 81 capable of accommodating the bundled wires 3c in which the extra length portion is loosened are provided at one corner. The pressing tool 8 has a shape that is narrowed toward the tip thereof, and small plates that are resistance blades 82 are respectively projectingly installed on three surfaces of the large cross section side, and the large diameter of the cylindrical body 6 is provided. 3 on mouth 62
The device serves as a device for preventing the falling of the rope material 3b due to the rotational force generated when the rope material 3b is aligned with the three grooves 63 and the tension is applied to the rope material 3b. Further, the triangular cross-sectional shape of the pressing tool 8 matches the triangular hole provided on the side of the small diameter opening 64 of the tubular body 6, and the rope member 3
This serves as a device for preventing the rope material 3b from coming off due to the rotational force generated when b receives a tension.

[0012]

Next, the function of the end stopper for the shock absorbing fence will be described. <a> Installation of end stopper on rope material (Figs. 1 and 3) The end stopper 5 for the shock absorbing fence is a guide that opposes after the rope materials 3a and 3b are laid across between the columns 2 and 2. The rope member 3a is accommodated in the insertion portion formed by the portion 7. However, the rope material 3a housed in the guide portion 7 which is the rope material insertion portion is made slidable.

<B> Installation of the extra length of the rope material to the end stopper (FIGS. 3, 4, and 5) The extra length 3b of the rope material is attached to the taper-shaped gripping hole 6 in the cylindrical body 6.
1 from the small diameter 64 side to the large diameter 62 side. After that, the grooves 8 at the three corners of the outer peripheral surface of the triangular cross section of the pressing tool 8 are formed.
The bundled wire 3c in which the extra length portion 3b is loosened is accommodated in 1, and is inserted into the holding hole 61 and fixed by wedge. Further, the three resistance blades 82 provided on the pressing tool 8 are matched with the three grooves 63 provided in the inside of the grip hole 61, and due to the rotational force generated when the rope member 3b receives tension. It serves as a device for preventing the rope material 3b from coming off. Further, the triangular sectional shape of the pressing tool 8 and the grip hole 6
The triangular holes of the small diameter portion 64 of 1 are aligned, and this also allows
It is possible to prevent the rope member 3b from coming off due to a rotational force generated when the rope member 3b receives a tension.

<C> When a shock is applied to the rope material (FIG. 6) When a shock force acts on the rope material 3a of the shock absorbing fence due to factors such as falling rocks or a collision of a traveling vehicle, this shock force is applied to the rope material 3a. Acts as a tension on the shock absorbing device 4.
When a certain tension or more is applied to the rope material 3a, the rope material 3a held by the impact absorbing device 4 starts sliding in the acting direction of the tension, and the impact energy is effectively generated by the frictional resistance during the sliding. Attenuated. The impact energy damping action due to the sliding of the rope material 3a is continued until the end stopper 5 for the impact absorbing fence collides with the impact absorbing device 4. As shown in the figure, when the end stopper for the shock absorbing fence collides with the shock absorbing device 4 and the sliding of the rope material 3a is restricted, the impact energy is changed to the rope material 3a, the end stopper 5 for the shock absorbing fence.
The shock absorber 4 is transmitted in this order and is supported by the rigidity of the column 2.

[0015]

[Embodiment 2] In Embodiment 1, an example in which a semi-cylindrical body is used for the guide portion of the rope material is shown. But,
The guide portion is not limited to the half-cylindrical body, but may be a tubular body.

[0016]

[Third Embodiment] In the first embodiment, an example is shown in which the pressing member of the rope material has a substantially triangular cross section. However, the pressing member for the rope material is not limited to the substantially triangular cross section, and may have a circular cross section.

[0017]

As described above, the present invention has the following effects. <B> The end stopper attached to the extra length of rope material
Continuity can be imparted to the damping action due to the sliding of the rope member and the damping action due to the deformation of the column by contacting with the shock absorbing device for gripping the rope member. Therefore, the amount of impact energy attenuation of the entire fence can be set large.

<Loop> The slack of the extra length portion can be restrained by anchoring the end stopper fixed to the extra length portion of the rope material to the other rope material. Therefore, it does not spoil the landscape.

<C> Since the semi-cylindrical guide portion of the end stopper can be fitted and mounted on the rope material which is installed across the impact absorbing device between the columns, the end stopper can be easily set.

[Brief description of drawings]

[Figure 1] Overall view of the shock absorbing fence with end stoppers

FIG. 2 is a perspective view of an end stopper.

FIG. 3 is a vertical sectional view of an end stopper.

[Figure 4] Left side view of the end stopper

FIG. 5 is a right side view of the end stopper.

FIG. 6 is an explanatory diagram of a shock absorbing function.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazuo Minami Kazuo Minami 2-11-4 Yaeju, Chuo-ku, Tokyo Kanamori Tohei Trading Co., Ltd. (72) Masateru Kasama 5-5 Kimachi, Takaoka-shi, Toyama Teikoku Metals Co., Ltd. Meeting

Claims (1)

[Claims] 1. When a rope material is gripped via a shock absorbing device attached to a column, and when a tension of a certain level or more is applied to the rope material, a shock is caused by sliding of the rope material by the shock absorbing device. In a shock absorbing fence that absorbs energy, a stopper that is fixed to the end of the extra length portion of the rope material and that is inserted through the extra length portion of the rope material. The end stopper for a shock absorbing fence is characterized in that a semi-cylindrical guide portion is formed on the outer peripheral surface of the cylindrical body, which is constituted by a pressing tool that wedge-fixes the end portion of the rope material.