CN102844499A

CN102844499A - Stone deflector screen

Info

Publication number: CN102844499A
Application number: CN2010800625309A
Authority: CN
Inventors: D.休伯; P.瓦林; B.布迪里尔
Original assignee: HEAVEN CLIMBER INVEST H C INVEST
Current assignee: HEAVEN CLIMBER INVEST H C INVEST
Priority date: 2009-11-27
Filing date: 2010-11-25
Publication date: 2012-12-26
Also published as: FR2953228B1; WO2011067479A1; TW201144527A; EP2504493A1; FR2953228A1

Abstract

The invention relates to a stone deflector screen, including: a pole (10) attached to a wall by one end; an edge cable (14); an element (16) for mounting the edge cable to the pole, thus enabling axial sliding of the edge cable; two brakes (20) that are placed in series in the edge cable and formed so as to enable extension of the edge cable when the edge cable tension exceeds a threshold; and a net (18) that is kept, by one edge thereof, on the edge cable. Each of the two brakes (20) is placed near the pole (10) on each respective side of the pole. A fusible cable (24), passing downstream from the pole (10), is attached to the edge cable (14) on both sides of the two brakes (20). The fusible cable replaces the edge cable for keeping the net (18), and is formed so as to extend with low tension relative to the threshold of the brakes.

Description

The falling rocks catching net

Technical field

The relevant a kind of falling rocks catching net of the present invention, it is designed to protect works to avoid the boulder that falls from each rock face.

Background technology

Figure 1A shows a kind of like falling rocks catching net illustrated among the european patent application EP1500747.This catching net comprises several pillars 10, and it is anchored in the rock face, and vertically is anchored to the possible track that falls boulder.The head of pillar is by drawing cable 12 to be fastened to this rock face, and draws cable 12 to be anchored to the rock face higher than catching net place.Several impartial separated limit cables 14 (having four at this) flatly link pillar, and are anchored into this rock face at the dual-side of this catching net.Limit cable 14 is fixed tightly on this pillar by installation elements 16, and the limit cable can freely endwisely slip in installation elements 16.The net 18 that part shows extends and spreads all over the whole surface of being defined by pillar, and supported by these limit cables 14.

Each limit cable 14 has two brakes 20 that indicate with circle, is placed on the both sides of this catching net respectively, is positioned at the sections that pillar is secured to this rock face.Respectively draw cable 12 also to provide a similar brake 20.Brake 20 is configured to, and when this draw power on the cable of drawing surpasses a certain threshold, allows this to draw the cable elongation.

Net 18 is configured for and absorbs the major part bump that falling rocks caused.Other element of this catching net, particularly limit cable 14 are together with its brake 20, and the brake 20 in drawing cable 12, are designed to this net is tightened up, and restriction simultaneously is passed to pillar 10 and is passed to the bump of the anchor point in rock face.In this way, behind falling rocks, it is only changed net usually and just enough replys its original protection system.

Figure 1B partly shows the vertical view of catching net after meeting with falling rocks among Figure 1A.Boulder 22 falls into the net 18 between two center poles 10.This net is out of shape, under effect of impact, extend, and pulling is along the limit cable 14 of net.Limit cable 14 is enough to opposing and is not extended; Brake 20 extends the limit cable to be obedient to moving of net.

Falling rocks catching net of today has been abideed by the standard of ETAG 27.This standard is set up several catching net grades.In each grade, catching net must pass through two tests.In so-called " the most basic (ultimate) " test, catching net must stop that has the just boulder of grade maximum kinetic energy that is defined.

In so-called " 1/3rd " test, catching net must stop two boulders with 1/3rd kinetic energy of this maximum kinetic energy continuously.In addition, after first boulder fell, the effective height of this net must be kept above 70% of this original effective height.

The catching net of the type among Figure 1A is very heavy and be difficult to be set up and be transported to and set up the place.Net 18 and limit cable 14 are combined into the independent combination that meets needed length outside the venue.Catching net is longer, and net 18 and the 14 formed combinations of limit cable are just huge more heavily more.Therefore, if need the catching net of specific length, the combination of the type of necessary several Figure 1A of placed adjacent.The number that this has increased the anchor point of limit cable, caused and selected a kind of like this balance: the weight of net/limit cable combination is big, with the number of restriction anchor point.

Summary of the invention

Therefore need a kind of falling rocks catching net, it can be unheavy and be difficult to set up and transport, and requires the anchor point number to be restricted simultaneously.

For meeting this kind demand, a kind of falling rocks catching net is provided, and it comprises pillar, and it is fixed to a rock face via an end; The limit cable; Element, it is used for this limit cable is secured to this pillar, endwisely slips to allow this limit cable; Two brakes, it is arranged in series in this limit cable, is configured to when the draw power on the cable of limit surpasses threshold, allows this limit cable elongation; And net, it is supported on this limit cable with one edge.These two brakes be configured in this pillar near, lay respectively at the both sides of this pillar.The fuse cable (fuse cable) of downlink side (downhill side) of this pillar of passing through is attached to this limit cable in the end opposite of these two brakes.This fuse cable replaces and is used to support the limit cable of this net, and to be formed at compared to the threshold of brake be to extend under the low draw power.

According to embodiment, this fuse cable wrap is drawn together two sections cable sections, and it is by the clamp members knot that is connected with each other.

According to embodiment, this net comprises two sections, its at the height place of this pillar by removable formula link together.

According to embodiment, be installed between two limit cable sections to the removable formula of each brake.

Description of drawings

Only be provided as limiting examples and shown the explanation of specific embodiments in the accompanying drawings by following, other advantage and characteristic will be more clear.

Aforementioned Figure 1A and 1B roughly are presented at the traditional falling rocks catching net behind the falling rocks with front elevation drawing and vertical view;

Fig. 2 roughly shows the embodiment of modularity falling rocks catching net; And

Fig. 3 A and 3B show the detailed structure example that this modularity catching net is highly located at the head and the foot (foot) of pillar.

The specific embodiment

In attached drawings, the element of those elements is with the similar elements symbology in Figure 1A.

Fig. 2 roughly shows the front elevation drawing of the embodiment of modularity falling rocks catching net.It comprises several pillars 10, and these pillars 10 are anchored in the rock face, and vertically is anchored to the possible track that falls boulder.Draw cable 12 by what be anchored to rock face, the head of pillar 10 is fastened to the rock face higher than this catching net place.

Lay respectively at two limit cables 14 of top and bottom (bottom), flatly link pillar 10, and be anchored into this rock face at the dual-side of this catching net.Limit cable 14 is fastened to pillar by installation elements 16, and these installation elements 16 permission limit cables freely endwisely slip.This installation elements 16 is configured to, and under all normal operation of catching net, limit cable 14 is remained be fastened to this pillar.

The net 18 that part shows extends and spreads all over the whole surface of being defined by pillar.The top of this net and bottom margin are supported by limit cable 14.

Near each pillar, each limit cable 14 is provided with two brakes 20 that lay respectively at these pillar both sides.Recalling the brake 20 that indicates with circle is configured to: when traction surpasses a certain threshold, allow this to draw the cable elongation.Near the sections of the limit cable 14 that includes brake 20 each pillar no longer supports net 18.Net 18 is supported by fuse cable 24 herein, and this fuse cable 24 attaches to the limit cable at the opposition side of these two brakes 20.In addition, similar this limit cable 14, this fuse cable slidably is installed on this pillar 10.

So-called " fuse " cable means a kind of cable that is provided with the fuse unit 26 of hexagon symbology, and it just allows this cable elongation when this cable one is pulled.The trigger action power of " fuse " 26 preferably enough makes this fuse cable support the weight of this net 18 and does not have elongation; But be lower than the threshold of brake 20 so that the elongation of this fuse cable and can be on the limit section elongation back of cable or the net that supports by this fuse cable produce opposite remarkable resistance.

The structure configuration that this kind has near the fuse cable of the limit cable of taking over each pillar makes it possible to realize the modular structure of net and the modular structure of related elements thereof.In fact, below brake that specifies 20 and electrical fuse element 26 are constituted the composition element that can be easy to make up and dismantle and guarantee simultaneously desirable strength.Fuse cable 24 can be fixed tightly near the pillar net, allows cable 14 relative pillars in limit freely to slide simultaneously, is obedient to the function of being out of shape with the damping net so that it can suitably carry out it.

Can be different near the structure configuration of the cable center pole in the structure configuration of the cable at the edge of this catching net, because this cable is pulled to its anchor point at this height from the head of pillar.Like what shown, the fuse cable 24 at the edge of this catching net is fixed on the limit cable 14 between brake 20 and pillar 10.This is not for normally there being the zone of net 18.

Here, each pillar 10 draws cable 12 to be tightened up by two, and the said cable 12 that draws is anchored into rock face in the pillar both sides in eminence.Need fixing two of single anchor point to draw cable with two pillars that continue are connected.Two heads that draw cable to be fastened to this pillar by single brake 20 that are connected with same pillar.

This catching net preferably includes a kind of structure, and this structure is used to limit the reduction of the effective height of this net behind bump.This structure comprises an auxiliary cable 28 that links the foot of these pillars.This auxiliary cable is fixed in these pillars rigidly, that is it is not provided with brake it can be extended.Between two pillars, brake 20 ' will assist cable 28 to be linked to bottom sides cable 14.

After boulder fell, the catching net among Fig. 2 was also to be out of shape with reference to the illustrated mode of Figure 1B.Be distributed in brake 20 elongations on the limit cable 14, be obedient to the distortion of net to allow this limit cable, the distortion of this net of damping simultaneously.Electrical fuse element 26 makes fuse cable 24 can be obedient to moving of limit cable, guarantees that simultaneously net 18 is supported near the pillar place.By auxiliary cable 28 and brake 20 ' formed structure, net is delayed in the reduction of the height of its base section.This combination 28,20 ' guarantees that also this net is supported near the rock face place, comes off because of gravity to prevent boulder.

Fig. 3 A and 3B show the thin embodiment of portion in the part of the foot of the head of pillar 10 and this pillar of falling rocks catching net respectively.The head of this pillar is shown as from lower upwards to be watched, and its foot then is shown as from eminence and watches downwards.

Net 18 comprises the steel ring of a succession of mixed knot.Each steel ring passes six and is configured in other steel ring around it with hexagon.

Each brake 20 comprises plate, this plate with an end by the ring of fastener to limit cable sections.Article four, brake cable by on the two sides of clamp to this plate, and form two by the ring of fastener ring of cable sections in the adjacent side.The free end of braking cable can extend this brake with big friction force.The stroke of this brake is by 30 decisions of cable section, and cable section 30 is fixed between the ring of plate and braking cable.The length of cable section 30 is less than the free-ended length of braking cable, so that the braking cable keeps being engaged in all clamps at stroke terminal.

Fuse cable 24 comprises two cable sections, and this cable section is attached at highly locating of this pillar by two as the clamp of fuse unit 26.This clamp can relative to each other slide these two sections with the friction threshold that is starkly lower than that movable brake 20.Yet this friction threshold is enough to support the weight of this net.Be installed in the stroke of these safeties of clamp decision of free end of the section of fuse cable.

Like what shown, fuse cable 24 is fixed on the pillar 10 by fastener 32, and this fastener 32 passes the support of this pillar.This fastener can freely slide this fuse cable.

The installation elements 16 that is used for the limit cable is fastened at this pillar comprises two U-shaped plates, and these two U-shaped plates are by back-to-back welding and limit and be used for the vertical trench that this limit cable passes.The bolt that links these U-shaped plates draws cable to remain in this groove this.

In Fig. 3 B, can see that this pillar is movably connected on the grappling plate.This can tilt this pillar when the brake that draws cable extends under the bump, and can not damage this anchoring structure.Installation elements 16 is secured to this grappling plate below this pillar.As shown in the figure, auxiliary cable 28 extends below this pillar.Should assist cable 28 can comprise the ring of the bolt that can pass this installation elements 16.Should assist cable 28 to be fixed in the edge pillar of this catching net with its end.

Net 18 comprises that several are attached at the section of the height of these pillars each other by fastener.The net section forms the part of module, and it further comprises bottom and the sections of top sides cable 14, the brake 20 that is associated and the section of the fuse cable 24 that is associated.Only one of edge of this module comprises limit cable sections, and this limit cable sections navigates within the installation elements 16 of the foot of this pillar and head.

Complete module combine this catching net whereby each pillar is reached.Catching net for long especially will transport and install having a large amount of modules, but each module all has rational weight and can heavy.In addition, what are no matter can be observed the length of catching net, the number of the anchor point that is associated with the limit cable is fixed.

Claims

1. falling rocks catching net, it comprises:

Pillar (10) is fixed to a surface via an end;

Limit cable (14);

Element (16) is used for said limit cable is secured to said pillar, endwisely slips to allow said limit cable;

Two brakes (20) are arranged in series in the cable of said limit, are configured to when the draw power on the cable of limit surpasses threshold, allow the cable elongation of said limit; And

Net (18) is supported on said limit cable with one edge;

It is characterized in that it comprises:

Said two brakes (20) be configured in said pillar (10) near, be configured in the both sides of said pillar respectively; And

Fuse cable (24); The pass through downlink side of said pillar; End opposite at said two brakes (20) is attached to said limit cable (14), replace to be used to support the limit cable of said net (18), and to be formed at compared to said threshold is to extend under the low draw power.

2. catching net as claimed in claim 1, it comprises the auxiliary cable (28) of the brakeless device of the foot that is used to link two pillars, and the brake (20 ') that is used between said two pillars said auxiliary cable is linked to said limit cable (14).

3. catching net as claimed in claim 1, wherein said fuse cable (24) comprise two sections cable sections that are connected with each other and tie by clamp members.

4. catching net as claimed in claim 3, wherein said fuse cable (24) is fastened to said pillar by fastener.

5. catching net as claimed in claim 1, wherein said pillar (10) flexibly connects at its foot place.

6. catching net as claimed in claim 1, wherein said net (18) are included in two sections that link together of said pillar with highly locating removable formula.

7. catching net as claimed in claim 1 wherein is installed between two limit cable sections (14) to the removable formula of each brake (20).