Passive protective net

Abstract

The utility model provides a passive protective net which comprises a plurality of protective net bodies connected in sequence, each protective net body comprises two supporting rods arranged side by side and a steel wire rope net connected between the supporting rods, a connecting part is further arranged on one side, corresponding to the steel wire rope net, of each supporting rod, and the connecting parts are of a hollow structure. And a folded buffer rope net is arranged in the connecting part. When the pull rope is broken due to overlarge stress, the steel wire rope net moves downwards under the driving of falling rocks, the buffering rope net is pulled out of the connecting position, a bag structure extending downwards is formed, the falling rocks can be wrapped and move along the surface of the hillside, and the falling rocks are buffered and fixed to the surface of the hillside and cannot fall onto the road surface below the falling rocks. And the probability of causing harm is reduced. The problem that due to the high strength of the steel wire rope net, falling rocks are popped out after the steel wire rope net is reversely rotated under a large amount of stress, the coverage range of the falling rocks is enlarged, and larger damage is caused is solved.

Description

Technical Field

[0001] This utility model relates to the field of slope protection equipment technology, and in particular to a passive protection net. Background Technology

[0002] In mountainous areas, geological disasters such as landslides, rockfalls, mudslides, collapses, landslides, and weathering are common on slopes, especially along linear projects such as railways and highways. These disasters are characterized by numerous points of occurrence, wide coverage, and long distances, making prevention and control extremely difficult and sometimes impossible under limited resources (human, material, and financial resources).

[0003] In traditional slope protection systems, masonry and shotcrete slope protection can damage slope vegetation and, over time, separate from the slope, leading to localized collapses, spalling, and other structural lifespan issues. Therefore, flexible passive protection nets, with their inherent advantages of simple construction, convenient maintenance, advanced technology, safety, reliability, environmental friendliness, economy, and standardized design selection, have seen rapid development and widespread adoption in numerous slope protection projects.

[0004] Passive slope protection netting consists of four main parts: wire rope netting or ring netting (with an additional layer of wire mesh when small rock fragments need to be intercepted), a fixing system (anchor bolts, anchor ropes, base, and support ropes), energy-absorbing rings, and steel columns. The steel columns and wire rope netting are connected to form a unified whole, providing surface protection to the protected area and preventing the collapse of rock and soil, thus serving as slope protection. The flexibility and interception strength of the wire rope netting are sufficient to absorb and disperse the expected impact energy of falling rocks, and the design and use of energy-absorbing rings further enhance the system's impact resistance. Furthermore, compared to rigid interception and masonry retaining walls, it changes the original construction process, reducing construction time and costs.

[0005] However, when faced with large falling rocks, the wire rope net and its fixing system are unable to support the impact due to the large force, causing it to flip downwards. The high strength and flexibility of the wire rope net prevent it from being completely damaged. Instead, as it flips along with the support system, the pressure it experiences is released, causing the rock and soil to bounce outwards. This, in turn, further expands the impact range of the falling rock, potentially causing even greater damage. Utility Model Content

[0006] In view of the shortcomings of the existing technology, this utility model provides a passive protective net, which solves the problem that when the wire rope net is impacted by a large falling rock, it will not break itself but will flip outward, thereby ejecting the falling rock and increasing the impact range of the falling rock, which may cause greater damage.

[0007] According to an embodiment of this utility model, a passive protective net includes several protective net bodies connected in sequence. Each protective net body includes two parallel support rods and a wire rope net connected between the support rods. The wire rope net and the support rods are coplanar. Each support rod has a connecting part on the side corresponding to the wire rope net. The connecting part is a hollow structure, and a folded buffer rope net is provided inside the connecting part. One end of the wire rope net is fixedly connected to the buffer rope net, and the other end of the buffer rope net is fixedly connected to the support rod. The wire rope net is also connected to the support rod by a pull rope. The pull rope has a load-bearing limit. When the load-bearing limit is exceeded, the pull rope breaks, and the wire rope net pulls the buffer rope net out of the connecting part.

[0008] Furthermore, symmetrical fixing ropes are respectively provided on the top of the support rod in the direction corresponding to the two sides of the wire rope net. One end of the fixing rope is fixedly connected to the top of the support rod, and the other end is connected to the mounting base. The mounting base is provided with several mounting holes, which cooperate with the screw to fix it to the ground.

[0009] Furthermore, the connecting part is a strip-shaped hollow square rod structure. One side of the connecting part is fixedly connected to the support rod, and the opposite side is provided with an opening. A sealing plate is provided on the opening to close it. The sealing plate and the opening of the connecting part are connected by a snap-fit, that is, the sealing plate will detach from the opening after being subjected to force.

[0010] Furthermore, the sealing plate is provided with a plurality of connecting holes arranged sequentially along the direction of the support rod, and the wire rope net is provided with a plurality of corresponding connecting strips near the connecting part. The connecting strips pass through the connecting holes, extend into the connecting part, and are connected to the buffer rope net.

[0011] Furthermore, several groups of pull ropes are arranged sequentially along the direction of the support rod. Each group of pull ropes includes two ropes, with one end of each rope fixed to the edge of the wire rope net and the other end fixedly connected to the two sides of the opening of the connecting part.

[0012] Furthermore, the wire rope net is provided with a connecting strip on one edge near the connection part, and is then connected to the pull rope through the connecting strip.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention features a connecting section between the wire rope net and the support rod. Inside this connecting section is a folded buffer rope net. The wire rope net is simultaneously connected to the support rod by a pull rope with a maximum load capacity. When this capacity is exceeded, the pull rope breaks, causing the wire rope net to lose its fixed connection to the support rod. Driven downwards by the falling rocks, the wire rope net pulls the buffer rope net out of the connecting section, forming a downward-extending pocket structure that can enclose the falling rocks, allowing them to move along the hillside surface with the wire rope net and the buffer rope net. This avoids the problem of the high strength of the wire rope net causing rocks to bounce off when subjected to significant force and reverse, thus preventing the rockfall from expanding its coverage area and causing greater damage. For smaller but impact-force-rich rocks, the pocket structure can also hold them in place, cushioning and fixing them to the hillside surface, preventing them from falling onto the road below and reducing the probability of causing harm. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an embodiment of the present utility model.

[0016] Figure 2 This is a front view of an embodiment of the present utility model.

[0017] Figure 3 This is a schematic diagram showing the specific connection between the wire rope mesh and the connecting part in an embodiment of this utility model.

[0018] In the above attached diagram: 1. Support rod; 2. Steel wire rope net; 3. Connecting part; 4. Fixing rope; 5. Pull rope; 6. Connecting belt; 21. Connecting strip; 31. Sealing plate; 41. Mounting base. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 As shown in the figure, this utility model embodiment proposes a passive protective net, which includes several protective net bodies connected in sequence. The protective net bodies are inclinedly set on the surface of the hillside to intercept rocks and soil rolling down from above, thereby protecting the area below.

[0021] like Figure 2As shown in this embodiment, the protective net body includes two parallel support rods 1 and a wire rope net 2 connected between the support rods 1. The wire rope net 2 and the support rods 1 are coplanar. The bottom end of the support rod 1 is embedded in the mountainside to form a fixed support. Other fixing structures, such as pre-embedded concrete steel cages, can also be installed at the bottom end of the support rod 1, which will not be elaborated here. Symmetrical fixing ropes 4 are also provided on the top of the support rod 1 corresponding to the two sides of the wire rope net 2. One end of each fixing rope 4 is fixedly connected to the top of the support rod 1, and the other end is connected to a mounting base 41. The mounting base 41 has several mounting holes, which cooperate with screws to fix it to the ground. The fixing ropes 4 further reinforce the support rod 1, ensuring its stability under normal conditions and preventing tilting.

[0022] A connecting part 3 is also provided on the side of the support rod 1 corresponding to the wire rope net 2. The connecting part 3 is a hollow structure, and a folded buffer rope net is set inside the connecting part 3. One end of the wire rope net 2 is fixedly connected to the buffer rope net, and the other end of the buffer rope net is fixedly connected to the support rod 1. The wire rope net 2 is also connected to the support rod 1 by a pull rope 5. The pull rope 5 has a load-bearing limit. When the load-bearing limit is exceeded, the pull rope 5 breaks, and the wire rope net 2 pulls the buffer rope net out of the connecting part 3. This causes the wire rope net 2 and the buffer rope net to move downward with the falling rocks, forming a downward-extending pocket structure that can cover the falling rocks and make them move along the hillside surface with the wire rope net 2 and the buffer rope net.

[0023] like Figure 3 As shown, preferably, in this embodiment, the connecting part 3 is a strip-shaped hollow square rod structure. One side of the connecting part 3 is fixedly connected to the support rod 1, and the opposite side has an opening, which is sealed by a sealing plate 31. The sealing plate 31 and the opening of the connecting part 3 are connected by a snap-fit, that is, the sealing plate 31 will detach from the opening when subjected to force. The sealing plate 31 has a plurality of connecting holes arranged sequentially along the direction of the support rod 1. The wire rope net 2 has a plurality of corresponding connecting straps 6 on the side near the connecting part 3. The connecting straps 6 penetrate through the connecting holes, extend into the connecting part 3, and are connected to the buffer rope net. In this way, it can be ensured that the buffer rope net is sealed inside the connecting part 3 during normal use, preventing it from leaking out and affecting subsequent deployment.

[0024] Correspondingly, several sets of pull ropes 5 are arranged sequentially along the direction of the support rod 1. Each set of pull ropes 5 includes two ropes, with one end of each rope fixed to the edge of the wire rope net 2, and the other end fixedly connected to the two sides of the opening of the connecting part 3. The two pull ropes 5 are respectively arranged on both sides of the connecting band 6. When the pull rope 5 breaks, the connecting band 6 can apply tension to the buffer rope net until the sealing plate 31 is pulled out and separated from the connecting part 3, allowing the buffer rope net to detach from the connecting part 3.

[0025] In a further preferred embodiment, the steel wire rope mesh 2 is further provided with a connecting strip 21 on the edge near the connecting part 3, and is then connected to the pull rope 5 through the connecting strip 21. This can improve the connection strength of the edge of the steel wire rope mesh 2 and avoid problems such as tearing caused by excessive local stress.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A passive protective net, the passive protective net comprising a plurality of protective net bodies connected in sequence, characterized in that: The protective net body includes two parallel support rods and a steel wire rope net connecting the support rods. The steel wire rope net and the support rods are coplanar. Each support rod has a connecting part on the side corresponding to the steel wire rope net. The connecting part is a hollow structure, and a folded buffer rope net is installed inside the connecting part. One end of the steel wire rope net is fixedly connected to the buffer rope net, and the other end of the buffer rope net is fixedly connected to the support rod. The steel wire rope net is also connected to the support rod by a pull rope. The pull rope has a load-bearing limit. When the load-bearing limit is exceeded, the pull rope breaks, and the steel wire rope net pulls the buffer rope net out of the connecting part.

2. The passive protective net as described in claim 1, characterized in that: The top of the support rod is also provided with symmetrical fixing ropes on both sides of the steel wire rope net. One end of the fixing rope is fixedly connected to the top of the support rod, and the other end is connected to the mounting base. The mounting base is provided with several mounting holes, which cooperate with the screw rod to fix it to the ground.

3. The passive protective net as described in claim 1, characterized in that: The connecting part is a strip-shaped hollow square rod structure. One side of the connecting part is fixedly connected to the support rod, and the opposite side is provided with an opening. The opening is sealed with a sealing plate. The sealing plate and the opening of the connecting part are connected by a snap-fit, that is, the sealing plate will detach from the opening after being subjected to force.

4. A passive protective net as described in claim 3, characterized in that: The sealing plate is provided with a number of connecting holes distributed sequentially along the direction of the support rod. The wire rope net is provided with a number of corresponding connecting strips near the connecting part. The connecting strips pass through the connecting holes, extend into the connecting part, and are connected to the buffer rope net.

5. A passive protective net as described in claim 3, characterized in that: The pull ropes are arranged in several groups along the direction of the support rod. Each group of pull ropes includes two ropes, and one end of each rope is fixed to the edge of the wire rope net, while the other end is fixedly connected to the two sides of the opening of the connection part.

6. A passive protective net as described in claim 1, characterized in that: The wire rope net is also provided with a connecting strip on one edge near the connection part, and then connected to the pull rope through the connecting strip.

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