JPH0653834U - Shock absorber - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a shock absorbing device capable of effectively absorbing a shock acting on a wire rope. [Structure] A shock absorbing device for absorbing tension acting on a rope material, which comprises a restraint plate having a plurality of rope material insertion holes, and continuously inserted into each hole of the restraint plate, and looped on one side of the restraint plate. A shock absorbing device constituted by a rope material formed with.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an impact absorbing device that can be used as a fall prevention fence or a rock fall prevention fence of a traveling vehicle.

[0002]

[Prior art]

 A fence for rockfall prevention is known, in which a wire rope is stretched horizontally between pillars that are erected at a certain distance, and the impact of rockfall is absorbed by the tension of the wire rope and the strength of the pillar. .

[0003]

[Problems to be solved by the device]

 Up to now, the method is to absorb the impact (tension) applied to the wire rope only by the tensile strength of the wire rope. Therefore, if the impact that acts on the wire rope is large, measures such as using a large-diameter wire rope or increasing the number of ropes are used, but in either case, the impact is basically the wire rope. If the tensile strength of the rope is exceeded, breaking of the wire rope cannot be avoided. Furthermore, when the impact acting on the wire rope increases, the design strength of the fixing members such as struts that ultimately bear the impact via the wire rope must also be designed to be large, as well as the construction cost and handleability. There is also a problem that the workability deteriorates. Also, when this type of fence is applied to prevent the vehicle from falling, the impact at the time of a collision will be large, and there is some concern about ensuring the safety of passengers.

[0004]

[Purpose of the present invention]

 The present invention has been made in view of the above points, and an object thereof is to provide a shock absorbing device that can effectively absorb a shock acting on a wire rope.

[0005]

[Means for solving problems]

 The present invention is a shock absorbing device that absorbs the tension acting on a rope material.It is a restraint plate having a plurality of rope material insertion holes, and it is continuously inserted into each hole of the restraint plate, and is attached to one side of the restraint plate. It is a shock absorbing device constituted by a rope material forming a loop.

[0006]

Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings.

<A> Impact Absorbing Device FIG. 1 shows an example of the impact absorbing device. The shock absorbing device is composed of a restraint plate 1 having a plurality of holes formed therein, and a rope member 3 which is continuously inserted into each hole of the restraint plate 1 and has a loop 2 formed on one surface of the restraint plate 1.

<B> Restraint Plate The restraint plate 1 is a rigid plate whose purpose is to clamp the rope member 3 with a constant force. On the plate surface of the restraint plate 1, a plurality of insertion holes 11 and 12 are opened in a row at regular intervals. More preferably, the insertion holes 11 and 12 may be opened with a slight inclination along the bending direction of the rope member 3. In addition, if the hole edge portions of the insertion items 11 and 12 are rounded, the rope member 3 can be prevented from being damaged during sliding. In the present invention, a method of holding the rope member 3 by using the elasticity of the rope member 3 to press the rope member 3 against the wall of the insertion holes 11 and 12 is adopted. Therefore, the holding force of the rope member 3 increases in proportion to the number of the insertion holes 11 and 12 formed. The holding force by the holding plate 1 is set to be equal to or lower than the tensile proof stress of the rope material 3 in order to avoid breakage of the rope material 3.

<D> Rope Material The rope material 3 is composed of a known wire rope as shown in the drawing, and each end of the rope material 3 is continuously inserted into each hole 11, 12 of the restraint plate 1. When the rope material 3 is inserted through the holes 11 and 12 of the restraint plate 1, the bending diameter of the rope material 3 is made as small as possible so that the rope material 3 is not loosened. Further, since the rope member 3 is pressed against the insertion holes 11 and 12 at the extreme ends to be killed, the diameter of the loop 21 is kept constant unless a certain tension is applied to both ends of the rope member 3. Further, in the shock absorbing device of the present invention, the shock absorbing rate becomes higher as the total length of the loop 2 is set longer.

[0010]

[Action]

 Next, the operation of the shock absorbing device will be described.

<A> At the time of normal impact In FIG. 2, both ends of the rope member 3 are fixed to fixing members such as columns. Here, when the tension acting on both ends of the rope member 3 is equal to or less than the setting clamping force of the rope member 3 by the holding plate 1, between the rope member 3 inserted in each insertion hole 11 and 12 and the restraint plate 1. No sliding occurs. Therefore, this tension is absorbed by the normal elastic deformation of the rope material 3.

<B> In case of excessive impact When the tension acting on both ends of the rope material 3 exceeds the set clamping force of the rope material 3 by the clamping plate 1, the rope material 3 inserted into the insertion holes 11 and 12 is Sliding occurs with the restraint plate 1. The rope member 3 slides while maintaining a constant frictional force in each of the insertion holes 11 and 12, and as a result, the loop 2 is reduced in diameter as shown by the one-dot chain line in FIG. Is paid out. The tension acting on the rope material 3 is attenuated by the sliding movement of the restraint plate 1 and the rope material 3. In this way, the tension can be effectively attenuated by sliding the rope material 3, so that the load on the fixing member that supports both ends of the rope material 3 is significantly reduced as compared with the conventional case.

[0013]

[Effect of device]

 Since the present invention is as described above, the following effects can be obtained.

<B> Before transmitting the impact to the fixing member, the impact can be effectively absorbed by sliding between the rope member and the restraint plate.

<B> By selecting the number of the insertion holes of the constraining plate, it is possible to easily set the gripping force of the rope material.

<Ha> By changing the total length of the loop, the amount of shock absorption can be adjusted.

<D> The shock absorbing device can be applied as various protective fences such as a rockfall prevention fence and a vehicle fall prevention fence, and is highly versatile.

<E> When the shock absorbing device is used as a fence for preventing the vehicle from falling, the shock can be effectively absorbed and the safety of passengers is improved. Also, since the fence does not block the view, driving safety can be secured.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram of the operation

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Yoshida 4-7 Toyocho, Tonami City, Toyama Prefecture A-Say Day Co., Ltd. (72) Inventor Yutaka Hosokawa 4-7 Toyomachi, Tonami City, Toyama Prefecture Ei Co., Ltd.・ Chi Day (72) Inventor, Yoshihiro Koshida 55, Nagayacho, Mikawa-cho, Ishikawa-gun, Ishikawa Prefecture 1 1 Kowa Co., Ltd. (72) Innovator Shinji Yoshino 4-17-14 Shiratori, Katsushika-ku, Tokyo Koiwa Wire mesh stock company

Claims (1)

[Scope of utility model registration request] 1. A shock absorbing device for absorbing a tension acting on a rope member, comprising: a restraint plate having a plurality of rope member insertion holes, and one side of the restraint plate continuously inserted into each hole of the restraint plate. A shock absorbing device composed of a rope material that forms a loop on the