JP3082031B2 - Rope material shock absorber - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorbing device for a rope material.

[0002]

2. Description of the Related Art As a shock absorbing device for absorbing an impact force applied to a rope material stretched on a shock absorbing fence, a rope material is interposed between a pair of plates, and the pair of plates is tightened with bolts. There has been proposed a device in which is attached to a stationary member such as a column, and when a tensile force is generated in the rope material, a frictional resistance is generated between the peripheral surface of the rope material and the plate to absorb an impact.

[0003]

In the above-mentioned conventional shock absorbing device, in order to obtain a stable shock absorbing effect, each bolt is fixed so that the fastening force of the rope material by the pair of plates becomes uniform. Tightening torque must be controlled evenly, and great care must be taken in bolt tightening work.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a shock absorbing device for a rope material capable of obtaining a stable shock absorbing effect by a simple method. It is in.

[0005]

[ MEANS FOR SOLVING THE PROBLEMS] The present invention relates to a support or an anchor.
Attached to a car, etc., the outer peripheral surface of the rope material is sandwiched between a pair of pressing plates, and the pressing plates are fastened with bolts
The impact acting on the rope material is
Absorbed I than in dynamic resistance, the impact absorbing device of the rope member, to hold the rope material in a wavy shape on the opposite surface of the pressing plate, characterized in that the formation of the corrugated half groove, rope
It is a material shock absorbing device. Further, according to the present invention, in the above-described shock absorbing device, each pressing plate has a semicircular cross section, and a wavy half groove having a uniform depth is formed.
It is a shock absorber for rope material . Further, according to the present invention, in the above-described shock absorbing device, on the opposing surface of each pressing plate,
A rope material , wherein a convex portion and a concave portion are formed in a thickness direction, and a wavy half groove is formed between the pressing plates.
Which is a shock absorbing device. According to the present invention, there is provided a shock absorbing device for a rope material , wherein a plurality of wavy half grooves are formed on an opposing surface of each pressing plate. According to the present invention, there is provided a shock absorbing device for a rope material, wherein the wavy half groove is formed to have a depth smaller than a radius of the rope material . The present invention also provides the shock absorbing device according to any of the above,
Wherein the rope material is wire rope, b
It is a shock absorbing device for loop material .

[0006]

Embodiment 1 Hereinafter, an impact absorbing device according to the present invention will be described with reference to the drawings.

<A> Overall Configuration As shown in FIGS. 1 and 2, the shock absorbing device 1 includes a pair of pressing plates 2 and 3 and a plurality of bolts 4 for fastening the pressing plates 2 and 3. .

<B> Pressing Plate On the opposing surface of each pressing plate 2, 3, a wavy half groove in the width direction of the pressing plates 2, 3 so as to hold a rope material 5 such as a wire rope in a wavy shape. 21 and 31 are respectively formed. Each of the wavy half grooves 21 and 31 has a semicircular shape corresponding to the cross-sectional shape of the outer peripheral surface 51 of the rope material 5, and when the two plates 2 and 3 are brought into contact with each other, a predetermined fastening force acts on the rope material 5. So that it is formed at a uniform depth.
Bolt holes 22 and 32 are formed in the pressing plates 2 and 3 at positions not overlapping the wavy half grooves 21 and 31. The outer shapes of the pressing plates 2 and 3 are not limited to the illustrated rectangles, but may be wavy half grooves 21 and 31 and bolt holes 22 and 3.
Various shapes can be adopted as long as the shape can be formed at an appropriate position. It is also conceivable to form holes 23, 33 for inserting U-bolts (not shown) in the pressing plates 2, 3, as shown in FIGS.

<C> Wavy half groove Wavy half groove 2 formed on the opposing surface of each pressing plate 2, 3
The reference numerals 1 and 31 each have a semicircular shape corresponding to the cross-sectional shape of the outer peripheral surface 51 of the rope member 5, and have a cross-sectional depth (height) smaller than half the cross-sectional diameter of the rope member 5. Thereby, the rope material 5
When the two plates 2 and 3 are brought into contact with each other so as to sandwich them, a gap is generated between the two plates 2 and 3. The gaps are tightened by the bolts 4 with a predetermined or greater tightening force, so that the peripheral surfaces of the wavy half grooves 21 and 31 and the rope material 5 are tightened.
Can be held at a constant pressure while making sufficient contact with the outer peripheral surface 51. In this manner, by tightening the pressing plates 2 and 3 with a predetermined tightening force or more, the tightening force is applied between the peripheral surfaces of the wavy half grooves 21 and 31 and the outer peripheral surface 51 of the rope material 5. Irrespective of this, a constant sliding resistance can be provided. Each gap generated between the pressing plates 2 and 3 when the rope material 5 is arranged in the wavy half grooves 21 and 31 is made to be constant. In addition, the peripheral surfaces of the wavy half grooves 21 and 31 are apt to receive a pressing force when sliding with the outer peripheral surface 51 of the rope material 5 and are arranged along the longitudinal direction of the peripheral surfaces to increase frictional resistance. It is also conceivable to form a required number of ridges (not shown). The ridges are, for example, corrugated half grooves 21, 31
(That is, a portion where the outer peripheral surface 51 of the rope material 5 is strongly pressed when a tensile force acts on the rope material 5).

[0010]

The operation of the shock absorbing device according to the present invention will be described below.

<A> Attachment of Impact Absorbing Device Here, an example will be described in which the impact absorbing device 1 of the present invention is attached in the middle of the rope material 5 supporting the impact absorbing fence 6. As shown in FIG. 2, the shock absorbing device 1 is inserted into the corrugated half grooves 21, 31 formed on the opposing surfaces of the pair of pressing plates 2, 3 in the middle of the rope material 5 and tightened with the bolts 4. . Then, as shown in FIG. 3, U holes are formed in the pressing plates 2 and 3 of the shock absorbing device 1,
The bolt 61 is inserted and connected, and one end of the rope member 5 is housed in the shock absorbing device 1 and the other end is connected to the head of the anchor 62 as described above. At this time, the extra length 52, which allows the rope material 5 to slide sufficiently, is attached to the shock absorbing device 1.
It is important to secure them so as to be more than the wavy half grooves 21 and 31. In order to clamp the rope material 5, the bolts 4 for tightening the pressing plates 2 and 3 of the shock absorbing device 1 are tightened to the rope material by uniformly controlling the tightening torque of all bolts as in the conventional device. It is not necessary to equalize the clamping pressure of the rope material 5 if the bolt 4 is tightened with a predetermined or more tightening force in the direction of narrowing the gap generated between the pressing plates 2 and 3. Can be provided.

<B> Absorbing Action of Impact Force As shown in FIG. 4, the rope member 5 is held in a wave-like manner between the pressing plates 2 and 3 constituting the impact absorbing device 1. When a tensile force a acts on the rope material 5, the rope material 5
It slides while being forcibly guided by 1,31. On this occasion,
Due to the elasticity of the rope material 5, the outer peripheral surface 51 is formed in the wavy half groove 2.
1, 31 are strongly pressed against the peripheral surface to generate a pressing force b in the lateral direction of the groove. This pressing force b and the wavy half groove 21,
By the synergistic action of the frictional resistance between the rope 31 and the rope material 5,
The tensile force a is attenuated efficiently. In addition, the wavy half groove 21,
Since 31 is formed in a wave shape, the pressing plates 2 and 3
The length of the rope material 5 housed in the wavy half-grooves 21 and 31 is longer than the entire length of the wavy half-grooves 21 and 31.
The contact surface distance between the peripheral surface of the rope 31 and the outer peripheral surface 51 of the rope member 5 is increased, and a larger frictional resistance c can be generated.

[0013]

Second Embodiment In the first embodiment of the present invention, an example is described in which the half-grooves 21 and 31 having a wavy shape in the width direction of the pressing plates 2 and 3 of the shock absorbing device 1 are formed. On the other hand, it is conceivable to form the wavy half grooves 23, 33 in the thickness direction of the pressing plates 2, 3 as shown in FIG. Also in this case, Embodiment 1 of the invention
As in the case of the wavy half grooves 21 and 31 described in the above, the length of the rope material 5 accommodated in the wavy half grooves 23 and 33 is longer than the entire length of the pressing plates 2 and 3, and the pressing plates having the same total length are linearly formed. The contact surface distance between the peripheral surfaces of the wavy half grooves 23 and 33 and the outer peripheral surface 51 of the rope member 5 is longer than in the case where the accommodation grooves are formed, and it is possible to generate a greater frictional resistance. Become.

[0014]

Third Embodiment In the first or second embodiment of the present invention, the wavy half grooves 21 and 31 formed in the pressing plates 2 and 3 are formed in a wavy shape by combining a convex portion and a concave portion. An example is described. On the other hand, it is conceivable to form a wavy half groove by combining a large number of three or more convex portions and concave portions. Thereby, the length of the rope material 5 accommodated in the wavy half groove is further longer than the entire length of the pressing plates 2 and 3, and compared with the case where the accommodation groove is formed linearly in the pressing plate having the same overall length. The contact distance between the peripheral surface of the wavy half groove and the peripheral surface of the rope material is much longer, and it is possible to generate a larger frictional resistance.

[0015]

Fourth Embodiment In each of the above-described embodiments of the present invention, a shock absorbing device is used by being mounted on a rope material stretched between a support and a ground in order to support a shock absorbing fence. An example has been described. On the other hand, the shock absorbing device of the present invention can be attached to the middle of a rope material stretched between the columns of the shock absorbing fence. At this time, since the shock absorbing device receives sliding of the rope material, it must be fixed to a column or the like.

[0016]

Embodiment 5 In each of the embodiments of the invention described above, an example is described in which a single wavy half groove is formed in a pair of pressing plates constituting a shock absorbing device. On the other hand, it is conceivable that two or more wavy half grooves are formed in one set of pressing plates to accommodate a plurality of rope members by one shock absorbing device. Thus, for example, when the shock absorbing device is used for a shock absorbing fence, the gap can be set small by reducing the installation interval between the rope members stretched between the columns, and a relatively small falling rock can be received. It becomes possible to manufacture a shock absorbing fence.

[0017]

As described above, the present invention has the following effects. <A> Since the wavy half groove is formed in a wavy shape, a large and stable frictional resistance can be generated between the outer peripheral surface of the rope material and the peripheral surface of the accommodation groove. <B> In order to sufficiently clamp the rope material and obtain a certain sliding resistance, a tightening force of each bolt greater than a predetermined value is applied in the gap direction between the opposing surfaces of the pressing plates. No matter how large it may be, the work of managing the tightening torque of each bolt is not required, and the construction is very easy. <C> In order to slide the rope material by deforming it in a wave shape,
The outer peripheral surface of the rope material is strongly pressed against the peripheral surface of the accommodation groove. Therefore, the tensile force can be efficiently attenuated. <D> A longer contact surface distance of the rope material can be secured over the entire length of the shock absorbing device. A large frictional resistance can be obtained. Therefore, the shock absorbing device itself can be designed compact.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a shock absorbing device according to the present invention.

FIG. 2 is an explanatory view of a shock absorbing device when arranging a rope material.

FIG. 3 is an explanatory view of attachment to a rope material supporting a shock absorbing fence.

FIG. 4 is an explanatory view when a tensile force generated in a rope material is absorbed by an impact absorbing device.

FIG. 5 is an explanatory view of a shock absorbing device according to Embodiment 2 of the present invention.

Continuing on the front page (72) Kazuo Minami, 2-11-4 Yaesu, Chuo-ku, Tokyo Inside Kanemori Toheiira Corporation (72) Inventor Masaki Kasama 5-5 Kimachi, Takaoka City, Toyama Prefecture Teikoku Metals Company ( 56) References JP-A-61-35109 (JP, A) JP-A-7-26527 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16G 11/00-11/06 F16F 7/08 E01F 7/04

Claims (6)

(57) [Claims] Claims: 1. Attached to a support or an anchor,
The outer peripheral surface of the rope material is sandwiched between a pair of pressure plates, and the pressure plates are tightened with bolts, and the impact acting on the rope material
It absorbed I than the sliding resistance between the press plates, in the impact absorbing device of rope materials, holding the rope material in a wavy shape on the opposite surface of the pressing plate, and characterized by forming a corrugated half groove Rope material shock absorber. 2. The shock absorbing device for a rope material according to claim 1, wherein each pressing plate has a semicircular cross section and a wavy half groove having a uniform depth. 3. The shock absorbing device according to claim 1, wherein a convex portion and a concave portion are formed on a facing surface of each pressing plate in a thickness direction, and a wavy half groove is formed between the pressing plates. A shock absorbing device for a rope material . 4. The shock absorbing device according to claim 1, wherein a plurality of wavy half grooves are formed on the opposing surface of each pressing plate .
Shock absorber for loop material . 5. The shock absorbing device according to claim 1, wherein the wavy half groove has a depth smaller than a radius of the rope material.
Shock-absorbing device. In the shock absorbing device according to any one of claims 6] claims 1 to 5, wherein the rope material is wire rope, the shock absorbing device of the rope material.