JP3259017B2 - Guard cable - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guard cable.

[0002]

2. Description of the Related Art A guardrail or a guard cable is known as a partition between a road side and a sidewalk and a road. A conventional basic guardrail has a structure in which a connected beam having a corrugated cross section is supported by a column. The guard cable uses a rope instead of a beam, and its terminal is installed with a predetermined tension using a length adjusting bolt, and a U-shaped mounting is attached to the middle column. It is connected movably in the direction in which the rope is erected using a bracket or an L-shaped mounting bracket.

[0003]

A guardrail and a guard cable have beams and ropes integrally connected to a support at a fixed interval so that they can cope with a vehicle collision with their rigidity. ing. In other words, when a vehicle collides with a guardrail or the like, the vehicle is bounced off by the guardrail or the guard cable, or is damaged by digging into the guardrail or the guard cable as it is, and the passenger is injured by the strong impact force at the time of the collision. Or severe accidents can result in casualties. In particular, a direct collision with the strut portion causes the strut to bite into the vehicle, increasing the probability of death or injury. Furthermore, if the rope is damaged in an accident, it will be necessary to replace the rope during restoration work. Therefore, the present invention proposes a new guard cable that reduces the impact force at the time of a collision.

[0004]

According to the guard cable of the present invention, at least a suitable distance is provided between fixed posts, and
Use a core material formed by bundling piano wires at the base,
When a force exceeding a certain level is applied, it falls down
A plurality of lodging props are erected, and a horizontal rope is provided in a plurality of upper and lower stages between the plurality of lodging props , thereby enabling lateral movement of the rope.
Diformate to Erection and when applied is above a certain tension to the horizontal rope, Yokoro - said plurality of stages via the buffer unit is adapted to perform decompression of the flop
The ends of the horizontal rope connected to the fixed post of the horizontal row of a plurality of stages
When the vertical ropes are arranged in a wavy manner vertically
Then, at the intersection of each horizontal rope and vertical rope ,
Holds and clamps the rope when force greater than the clamping friction force is applied.
Connected with a cross bracket that cushions as the holding point moves
It is characterized by having done.

Therefore, when the vehicle collides with the rope portion, the horizontal rope absorbs the impact force by the extension of the rope by the buffer portion, and the crossing portion with the vertical rope absorbs the impact force. When a collision occurs or when a force exceeding a certain level in the falling direction acts on the column due to the movement of the horizontal rope, the column falls down and absorbs the impact force. This shock absorption reduces the shock received by the vehicle occupant in the event of an accident, thereby eliminating casualties and reducing the degree of injury.

[0006]

Next, an embodiment of the present invention will be described. The guard cable shown in the embodiment includes a fixed support 1, a lodging support 2, a horizontal rope 3, a vertical rope 4, a buffer fitting 5, a connecting fitting 6, and a cross fitting 7.

The fixed support column 1 is fixed to a foundation A formed by casting concrete or a hole drilled in the ground and fixed to the end of the horizontal rope 3 by a buffer metal fitting 5 and a connecting metal fitting. 6 is connected.

The lodging pillars 2 are erected at predetermined intervals between the fixed pillars 1 and are buried in a foundation A or the like.
When, a pillar portion 22 which diformate the horizontal rope 3 has a base portion 23 between them, through the root source unit 23 up and down, buried portion 21
A bundle of piano wires is used as a core material 24 connecting the pillar portion 22 and the embedded portion 21 and the pillar portion 22 are covered with an appropriate fixed jacket, and the root portion 23 is covered with a flexible material that can be bent. When a certain force or more is applied, the base portion 23 bends and the column portion 22 of the support falls down.

[0009] The horizontal rope 3 is spaced from
It is erected between the fixed support 1 and the lodging support 2 in parallel with five steps, and the end is fixed to the buffer metal fitting 5, and the middle part is inserted into the U-shaped fitting 25 of the accommodation support 2, or inserted into the L-shaped fitting. It is hung or movably attached in the rope direction.

The vertical ropes 4 are arranged in a wavy manner vertically, and the portions crossing the horizontal ropes 3 are connected by cross metal fittings 7.

As shown in FIG. 2, the buffer metal fitting 5 includes two holding bodies 51a and 51b, a holding bolt 52, a nut 53, and a hook body 54. Nipping body 51
a, 51b, a protruding portion 513 having a long plate shape, a rope holding groove 511 formed in one surface and waving in a longitudinal direction and a thickness direction, and a hook through hole (hook body connecting portion) 512 provided at both ends of the other surface. Protruding. Further, a bolt hole 514 penetrating from the front to the back is formed on both sides in the longitudinal direction.

The hook body 54 includes a holding body 51 facing the holding body 51.
a and 51b are provided with a parallel insertion rod portion 541 penetrating through each hook through-hole 512 and a connection U-shaped portion (hook portion) 542 connecting the insertion rod portion 541, and a screw portion 543 is formed at the tip of the insertion rod portion 541. Further, a fastening nut 544 screwed into the screw portion 543 is provided.

The connection between the horizontal rope 3 and the buffer metal fitting 5 is performed by leaving two ends of the horizontal rope 3 slightly.
51b is attached to the rope holding groove 511 facing the surface, the horizontal rope 3 is held by the holding pressure of the holding bolt 52 and the nut 53, and the insertion rod 541 of the hook body 54 is inserted into the hook through hole 512, and the screw portion is inserted. 543 screwed a fastening nut 5 44 concatenates hook body 54 sandwiching the main body 51a, and 51b, is for connecting the hook member 54 to the connecting fitting 6. The end of the horizontal rope 3 is left slightly longer than the buffer metal fitting 5, and a stopper body 31 is attached to the extreme end of the horizontal rope 3 to prevent the horizontal rope 3 from coming off from the buffer metal fitting 5.

The above-mentioned horizontal rope 3 is connected to a holding body 51.
a, 51b, when the tension greater than the clamping frictional force of the clamping body 51 is applied, the clamping portion of the horizontal rope 3 moves while holding a constant clamping force. become.

The connection fitting 6 comprises a screw shaft 61 penetrating through the fixed support 1, a hook 62 for hooking the tip to the buffer fitting 5, and a tightening nut 63. The hook 62 is a hook body. 54 and hooked on the connecting U-shaped portion 542 of the fixed support 1
When the nut 63 is tightened, the horizontal rope 3 is laid between the fixed columns 1 with a constant tension.

As shown in FIG. 4, the cross bracket 7 comprises an intermediate body 71, two holding bodies 72a and 72b, a holding bolt 73, and a nut 74. Intermediate 71 is
With a plate-shaped member having a plane elliptical shape, grooves 711 and 712 formed in directions intersecting each other are formed on the front and back surfaces thereof,
Bolt holes 71 penetrating front and back at both sides off the groove
3 is drilled. The holding bodies 72a and 72b are stacked on the upper and lower sides (front and back) of the intermediate body 71, and are provided with grooves 721a and 72lb facing the grooves 711 and 712, respectively, and bolt holes corresponding to the bolt holes 713. 72
2a and 722b.

The cross metal fitting 7 is used to form a crossing between the horizontal rope 3 and the vertical rope 4 into an intermediate body 71 and holding bodies 72a and 72b.
Are laminated so as to be sandwiched between the grooves 711 and 721a and between the grooves 712 and 72lb on the respective opposing surfaces, and the bolts 73 are passed through the bolt holes 713, 722a and 722b and the nut 74 is screwed and tightened in the laminated state. The ropes 3 and 4 at the intersection are held between the intermediate body 71 and the holding bodies 72a and 72b to form a guard body by the ropes.

In particular, since the cross bracket 7 for clamping the rope crossing portion with a predetermined clamping force is used, when a force greater than the clamping friction force is applied, a constant clamping force is maintained. The gripping point of the rope will move.

A horizontal rope 3 is mounted on a fixed support 1 and a falling support 2 which are erected at fixed intervals on the road side, a median strip or the like via a buffer metal fitting 5, and a plurality of upper and lower horizontal ropes are provided. 3 is provided with a cross metal fitting 7 at a crossing portion between the vertical rope 4 and the vertical rope 4 arranged in a wavy manner so as to form a net-shaped guard body. The guard body is stretched between the columns with a constant tension, preventing the vehicle from protruding out of the road and sufficiently functioning as a guard cable.

Therefore, when an accident such as collision of a vehicle with a guard cable occurs, or when the impact force of the collision is small,
In the case of a large accident that receives a strong impact force of a certain degree or more, the horizontal rope 3 is stretched against the clamping force of the shock-absorbing member 7 and absorbs the impact force.
Also, when a force greater than the holding force of the cross bracket is applied to the crossing portion between the horizontal rope 3 and the vertical rope 4, the crossing portion moves, and the net becomes as if the vehicle is received by the net, and the impact force is similarly absorbed. Further, the lodging support 2 also absorbs the impact force by the lodging.

Therefore, in the event of a major vehicle accident, the guard cable acts as a shock absorber, absorbing the strong impact force received by the vehicle, and thereby protecting the lives of the occupants of the vehicle.

According to the present invention, sufficient impact absorption can be achieved only by using a horizontal rope erected by using a buffer metal fitting, and the falling support can be used not only as a guard cable but also as a support for a guard rail. It can exhibit the same shock absorbing effect.

[0023]

As described above, according to the present invention, the rope and the support of the guard cable are provided with a cushioning function, and by reducing the impact force received by the vehicle in the event of a serious accident,
It protects the lives of passengers and reduces injuries,
It improves safety in a traffic accident.

[Brief description of the drawings]

FIG. 1 is an overall explanatory diagram of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the buffer fitting.

FIG. 3 is an explanatory view of a usage state of the buffer metal fitting.

FIG. 4 is an exploded perspective view of the cross bracket.

FIG. 5 is an explanatory view (front view) of a use state of the cross bracket.

FIG. 6 is an explanatory view (plan view) of a use state of the cross metal length.

FIG. 7 is a partially cutaway front view of the lodging column.

FIG. 8 is an explanatory view of the operation of the falling pillar.

FIG. 9 is a cross-sectional view of the lodging support column.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Fixed support | pillar 2 Falling support | pillar 21 Embedded part 22 Column part 23 Base part 24 Core material 25 U-shaped metal fitting 3 Horizontal rope 31 Stopper 4 Vertical rope 5 Buffer part metal fittings 51a, 51b Clamping main body 52 Clamping bolt 53 Nut 54 Hook body 6 Connecting metal fitting Reference Signs List 61 screw shaft part 62 hook part 63 tightening nut 7 cross metal fitting 71 intermediate body 72a, 72b holding body 73 holding bolt 74 nut

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-7-26527 (JP, A) JP-A-6-173221 (JP, A) JP-A-8-92918 (JP, A) JP-A 52-1982 54238 (JP, A) JP 45-10902 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) E01F 15/00 103

Claims (1)

(57) [Claims] 1. A at a Tekisen distance between the fixed post, small
Use a core made of a bundle of piano wires at the base
And bend down when a force greater than the specified value is applied.
Erected a plurality of lodging struts performing a 衝作, between the plurality of lodging struts, the transverse rope up and down a plurality of stages, b
Ends of the plurality of horizontal ropes via a buffering portion which is attached and erected so that the horizontal rope can be moved laterally and extends the horizontal rope when a predetermined tension or more is applied to the horizontal rope . <br/> is connected to a fixed support, and crosses with multiple horizontal ropes to make vertical ropes wave up and down.
Position, and make sure that the intersection of each horizontal rope and vertical rope is
When holding with a fixed pinching force and a force greater than the pinching friction force is applied
The cushioning action is effected by the movement of the rope
A guard cable that is connected with a forge .