CN217078800U - Double-arch reinforced prestressed steel column high-strength passive protective net - Google Patents
Double-arch reinforced prestressed steel column high-strength passive protective net Download PDFInfo
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- CN217078800U CN217078800U CN202220663987.5U CN202220663987U CN217078800U CN 217078800 U CN217078800 U CN 217078800U CN 202220663987 U CN202220663987 U CN 202220663987U CN 217078800 U CN217078800 U CN 217078800U
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Abstract
A double-arch reinforced prestressed steel column high-strength passive protective net comprises a plurality of double-arch prestressed steel columns, wherein the bottoms of the double-arch prestressed steel columns are installed on a base through connecting screws, and one sides of the double-arch prestressed steel columns are fixed in a slope rock surface through anchoring mechanisms; connect through the supporting mechanism between the adjacent two arch prestress steel post, the rhombus wire rope net has been laid on the supporting mechanism, the grid net has been laid to rhombus wire rope net inboard, the utility model discloses a rhombus wire rope net and grid net cooperation form double-deck protection network structure, can intercept the less thing that bursts at the slide of volume effectively through the grid net, and will strike the energy and transmit to rhombus wire rope net, and can intercept the great thing that bursts at the side slope effectively through rhombus wire rope net, with energy transmission to upper support rope, lower support rope and two arch prestress steel post to reduce the impact of the thing that bursts at the slide to rhombus wire rope net, improved holistic intensity and protecting effect, avoid the destruction of calamity to architectural equipment.
Description
Technical Field
The utility model belongs to the technical field of the side slope protection, especially, passive protection network of two arch enhancement mode prestressing force steel column high strength.
Background
Traditional side slope protective structure generally is concrete retaining wall or grout rubble retaining wall, and this passive protective structure is hardly by in time discovery after receiving impact and damage, and the staff also can't carry out timely maintenance to it, and is corresponding, and damaged department will can't block the falling rocks on the side slope. Compared with the traditional rigid interception, the flexible passive protective net is more favorable for buffering and dispersing impact kinetic energy of falling rocks and debris flow and generates a good interception effect, so that the flexible passive protective net is very suitable for a high side slope in a buffering zone beside a building facility, can intercept rock falls, flying rocks and debris flow outside the building, and avoids damage of disasters to the building facility.
Based on the problems, the double-arch reinforced prestressed steel column high-strength passive protective net is designed, and a rhombic steel rope net and a grating net are fixed on a side slope by adopting structures such as steel rope anchor rods, double-arch prestressed steel columns, supporting ropes, anchor pulling ropes and the like to form a grating type intercepting device, so that the side slope protection effect is achieved.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome the defect among the above-mentioned prior art, provide a passive protection network of two arch enhancement mode prestressing force steel column high strength that whole interception intensity is high, difficult production damages.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a double-arch reinforced prestressed steel column high-strength passive protective net comprises a plurality of double-arch prestressed steel columns, wherein the bottoms of the double-arch prestressed steel columns are installed on a base through connecting screws, and one sides of the double-arch prestressed steel columns are fixed in a side slope rock face through anchoring mechanisms; the adjacent double-arch prestressed steel columns are connected through a supporting mechanism, a diamond steel rope net is arranged on the supporting mechanism, and a grid net is laid on the inner side of the diamond steel rope net.
As a preferred scheme of the utility model, supporting mechanism includes supporting rope, under bracing rope, go up the upper end that the supporting rope is connected at adjacent two arch-type prestressing force steel post, the lower extreme at adjacent two arch-type prestressing force steel post is connected to the under bracing rope, go up and form the protected area between supporting rope, under bracing rope and the adjacent two arch-type prestressing force steel post, lay the rhombus wire netting in the protected area.
As an optimized scheme of the utility model, the link has been laid at the both ends of going up supporting rope, lower supporting rope, lay the seat of hanging with link looks adaptation on the double arch prestressing steel post.
As a preferred scheme of the utility model, anchoring mechanism includes pull-up anchor rope, steel cable stock and chicken heart ring, the one end of pull-up anchor rope is connected at two arch type prestressing force capital portion, the other end that two arch type prestressing force posts were kept away from to the pull-up anchor rope passes through the chicken heart ring and links to each other with the steel cable stock.
As a preferred scheme of the utility model, anchor mechanism includes a plurality of reinforcement anchor stay cords, it is connected with the seat of hanging at two arch-shaped prestressing steel column tops through the link to reinforce anchor stay cord one end, the other end that reinforces anchor stay cord passes through chicken heart ring and steel cable stock fixed connection.
As a preferred scheme of the utility model, consolidate two left and right sides that are located same two arch-shaped prestressing force posts for a set of anchor stay cord, it is connected with the diamond-shaped steel cable net through anti dislocation anti locking card that drops to consolidate the anchor stay cord.
As a preferred scheme of the utility model, including the side mechanism of drawing, the side mechanism of drawing is including the side hawser that draws, the one end of side hawser is connected at two arch form prestressing force post tops, the other end that two arch form prestressing force posts were kept away from to the side hawser passes through the chicken heart ring and links to each other with the steel cable stock.
As an optimal scheme of the utility model, it is equipped with the pressure reducing ring to go up to draw the hawser, draw the hawser to incline near two arch form prestressing force steel post one end equipartitions.
As an optimized scheme of the utility model, the grid net is connected at rhombus wire rope net inboard and the upper reason of overlap on rhombus wire rope net through the bundle silk, the area of grid net is greater than the area of rhombus wire rope net.
As an optimal scheme of the utility model, two arch form prestressing force steel column, go up supporting rope, lower supporting rope, upward draw the hawser, the hawser is drawn to the side, rhombus wire rope net and grid net all adopt hot-galvanize corrosion protection.
The utility model has the advantages that:
1. the utility model discloses a diamond wire netting and grid net cooperation form double-deck protection network structure, can intercept the less smooth thing that collapses of volume effectively through the grid net, and will strike and can transmit to diamond wire netting, and can intercept the great smooth thing that collapses of side slope effectively through diamond wire netting, with energy transfer supreme support rope, lower support rope and two arch form prestressing force steel posts, thereby reduce the impact of collapsing smooth thing to diamond wire netting, holistic intensity and protecting effect have been improved, avoid the destruction of calamity to architectural equipment.
2. The utility model discloses an effort to the falling rocks that the spalling collapsed or the danger stone that peel off between each parts carries out transmission each other and weakens for this protection network is difficult for producing local destruction at the in-process of interception falling rocks or danger stone.
3. The utility model discloses a kinetic energy that produces when decompression ring buffering, reduction falling rocks or danger stone striking protection network improves the structural strength of protection network, improves the reliable performance of this protection network, and the protection network wholly adopts hot-galvanize anticorrosive treatment, can prolong the life of this protection network.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the anchoring mechanism of the present invention;
FIG. 3 is a schematic view of the connection between the support mechanism and the diamond wire net of the present invention;
FIG. 4 is a schematic view of the arrangement of the pressure reducing ring on the supporting mechanism of the present invention;
reference numbers in the figures: the anti-slip anchor comprises a base 1, a connecting screw rod 2, a double-arch prestressed steel column 3, a diamond steel rope net 4, an anti-slip anti-falling lock clamp 5, an upper supporting rope 6, a grid net 7, a pressure reducing ring 8, a reinforcing anchor pull rope 9, a lower supporting rope 10, an upper pull anchor rope 11, a side pull anchor rope 12, a steel rope anchor rod 13, a heart ring 14, an anchoring mechanism 100, a supporting mechanism 200, a protection area 300 and a side pull mechanism 400.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
As shown in fig. 1-4, the double-arch reinforced prestressed steel column high-strength passive protective net comprises a plurality of double-arch prestressed steel columns 3, wherein the bottoms of the double-arch prestressed steel columns 3 are mounted on a base 1 through connecting screws 2, the base 1 is formed by pouring concrete, and one sides of the double-arch prestressed steel columns 3 are fixed in a side slope rock surface through anchoring mechanisms 100; the adjacent double-arch prestressed steel columns 3 are connected through a supporting mechanism 200, a rhombic steel rope net 4 is arranged on the supporting mechanism 200, and a grid net 7 is paved on the inner side of the rhombic steel rope net 4.
Specifically, the rhombic steel rope net 4 is of a rhombic structure, can intercept large slide-breaking objects on the side slope, and can transfer the sliding energy of the slide-breaking objects to the supporting mechanism 200, the double-arch prestressed steel column 3 and the base 1, so that the direct acting force of the slide-breaking objects on the rope net is reduced, and the probability of local damage is reduced.
The grid net 7 is laid and hung on the inner side surface of the rhombic steel rope net 4, namely the side of the rhombic steel rope net 4 facing the side slope, is the inner side surface, and the side of the rhombic steel rope net 4 departing from the side slope is the outer side surface; the grid net 7 is used for intercepting the small-size slide object and transferring energy to the rhombic steel rope net 4.
The dual protection effect of rhombus wire rope net 4 and grid net 7 strengthens the holistic structural strength of protection network, has strengthened the protective effect of protection network, avoids the destruction of calamity to architectural equipment.
Hanging rings are distributed at two ends of the upper supporting rope 6 and the lower supporting rope 10, hanging seats matched with the hanging rings are distributed on the double-arch prestressed steel columns 3, and the hanging rings and the hanging seats are in the prior art and are not described in detail.
The anchoring mechanism 100 comprises an upper anchor rope 11, a steel rope anchor rod 13 and a chicken heart ring 14, one end of the upper anchor rope 11 is connected to the top of the double-arch prestressed steel column 3, and the other end, far away from the double-arch prestressed steel column 3, of the upper anchor rope 11 is connected with the steel rope anchor rod 13 through the chicken heart ring 14.
The anchoring mechanism 100 comprises a plurality of reinforcing anchor pulling ropes 9, one ends of the reinforcing anchor pulling ropes 9 are connected with hanging seats at the tops of the double-arch prestressed steel columns 3 through hanging rings, and the other ends of the reinforcing anchor pulling ropes 9 are fixedly connected with steel rope anchor rods 13 through chicken heart rings 14.
The two reinforcing anchor pulling ropes 9 are a group and are positioned on the left side and the right side of the same double-arch prestressed steel column 3, and the reinforcing anchor pulling ropes 9 are connected with the rhombic steel rope net 4 through the anti-dislocation anti-falling lock clamp 5.
The utility model provides a passive protection network of double arch enhancement mode prestressing steel post high strength includes that side draws mechanism 500, side draws mechanism 500 is including side draw anchor rope 12, the one end of side draw anchor rope 12 is connected at double arch prestressing steel post 3 top, the other end that double arch prestressing steel post 3 was kept away from to side draw anchor rope 12 passes through chicken heart ring 14 and links to each other with steel cable stock 13.
One end of the upper pull anchor rope 11 and one end of the side pull anchor rope 12, which are close to the double-arch prestressed steel column 3, are uniformly provided with pressure reducing rings 8, and the pressure reducing rings 8 are marked in detail in fig. 4.
Specifically, in order to reduce the kinetic energy generated when the sliding object impacts the protective net, energy reducing rings 8 are arranged at the positions, close to the double-arch prestressed steel columns 3, of the upper pull anchor rope 11 and the side pull anchor rope 12. In the process of intercepting the slide object, when the tensile force borne by the upper pull anchor rope 11 and the side pull anchor rope 12 reaches a certain degree, the energy reducing ring 8 is started and moves through deformation; to absorb energy and thereby achieve overload protection.
The grid net 7 is connected to the inner side of the rhombic steel rope net 4 through the binding wires and is overlapped on the upper edge of the rhombic steel rope net 4, the area of the grid net 7 is larger than that of the rhombic steel rope net 4, the grid net 7 with a large area can systematically intercept more and small-sized crumbling objects, and energy is transmitted to the rhombic steel rope net 4.
The double-arch prestressed steel columns 3, the upper supporting ropes 6, the lower supporting ropes 10, the upper pull anchor ropes 11, the side pull anchor ropes 12, the diamond-shaped steel rope net 4 and the grid net 7 are subjected to hot galvanizing corrosion prevention treatment, so that the protective net is not prone to corrosion, the durability is high, and the whole service life of the protective net is prolonged.
Specifically, a double-arch reinforced prestressed steel column high-strength passive protective net is implemented:
step 1: cleaning pumice and floating soil on the side slope, measuring the side slope according to the requirements of a construction drawing, and determining the positions of the steel rope anchor rods 13 and the base 1; excavating a foundation pit of the base 1, paving foundation steel bars, pre-burying foundation screws and pouring concrete of the base 1; and then drilling the steel rope anchor rod 13, cleaning the hole of the steel rope anchor rod 13, injecting mortar into the hole by using a grouting machine, and then installing the steel rope anchor rod 13 (the steel rope anchor rod 13 is made of a double-strand steel rope).
Step 2: installing a double-arch prestressed steel column 3, an upper pull anchor rope 11, a side pull anchor rope 12 and a steel rope anchor rod 13, placing the double-arch prestressed steel column 3 upwards along the slope direction, and enabling the bottom of the double-arch prestressed steel column 3 to be positioned on the base 1; hanging a hanging ring of an upper pull anchor rope 11 on a hanging seat at the top of the double-arch prestressed steel column 3, and then connecting the other end of the upper pull anchor rope 11 with a steel rope anchor rod 13 in a ring way and temporarily fixing the other end by using a rope clamp; slowly lifting the double-arch prestressed steel column 3 and aligning the double-arch prestressed steel column to the base 1, then inserting the bottom of the double-arch prestressed steel column 3 into the base 1 and screwing the double-arch prestressed steel column through the connecting screw rod 2; adjusting the double-arch prestressed steel column 3 to the design direction through the upper pull anchor rope 11, tensioning the upper pull anchor rope 11 and connecting and fixing the upper pull anchor rope 11 with the steel rope anchor rod 13 through the chicken heart ring 14; after the anchor rope 11 is pulled up, the side pull anchor rope 12 is also installed on the steel cable anchor rod 13 in the same way.
And step 3: installing an upper supporting rope 6 and a lower supporting rope 10, hanging a hanging ring of the upper supporting rope 6 on a hanging seat at the top of the double-arch prestressed steel column 3, then adjusting the upper supporting rope 6 in the parallel and designed direction and placing the upper supporting rope 6 on the inner side of the hanging seat at the top of the double-arch prestressed steel column 3, and adjusting a pressure reducing ring 8 to be in place (the distance from the double-arch prestressed steel column is 50cm, and the pressure reducing ring 8 of each span on the same upper supporting rope 6 is symmetrically arranged relative to a steel column); at the second double-arch prestressed steel column 3, an upper supporting rope 6 is fastened and fixed at the outer side of a hanging seat at the top of the double-arch prestressed steel column 3 by a rope fastener, at the third double-arch prestressed steel column 3, the upper supporting rope 6 is placed at the inner side of the hanging seat at the top of the double-arch prestressed steel column 3, so that the upper supporting ropes 6 are alternately installed at the outer side and the inner side of the hanging seat at the top end of the double-arch prestressed steel column 3 until the last double-arch prestressed steel column 3 is reached, the upper supporting rope 6 is downwards wound on a base 1, and then the temporary fixing is carried out by the fastening fastener; the position of the pressure reducing ring 8 is adjusted again, and when the pressure reducing ring 8 is completely and correctly positioned, the upper supporting rope 6 is tightened and fixed by a rope clamp; the second upper supporting rope 6 is installed in the same way as the first one, but the last double-arch prestressed steel column 3 of the first supporting rope 6 is installed in the opposite direction of the first double-arch prestressed steel column 3, and the pressure reducing ring 8 is positioned on the other side of the same span; two upper supporting ropes 6 are mutually connected by a rope clamp, and the lower supporting rope 10 is installed in the same way as the upper supporting rope 6 but at the bottom of the double-arch prestressed steel column 3.
And 4, step 4: installing a rhombic steel rope net 4, wherein the rhombic steel rope net 4 is formed by weaving steel ropes through a dislocation-resistant anti-falling lock clamp 5, after the rhombic steel rope net 4 is woven, a redundant hoisting steel rope penetrates through meshes on the upper edge of the rhombic steel rope net 4 (two nets in the same span are hoisted simultaneously), one end of the rhombic steel rope net is fixed at the top end of a double-arch prestressed steel column 3, and the other end of the rhombic steel rope net is wound to a base 1 of the rhombic steel rope net through a hanging seat of the other double-arch prestressed steel column 3 and is temporarily fixed; the lifting rope is tightened by a rope tensioner until the diamond-shaped steel rope net 4 rises to the level of the upper supporting rope 6, the diamond-shaped steel rope net 4 and the upper supporting rope 6 are temporarily connected in a loosening way by redundant rope clamps, meanwhile, the diamond-shaped steel rope net 4 and the lower supporting rope 10 can be temporarily connected to ensure that the sewing is safer, and then the lifting rope can be loosened and drawn out; the above steps are repeated until all the diamond-shaped wire nets 4 are temporarily hung on the upper supporting ropes 6, and the diamond-shaped wire nets 4 are laterally moved to be positioned at the correct positions.
And 5: sewing the diamond-shaped steel rope net 4, cutting off the sewing rope and marking the middle point of the sewing rope, fixing the middle point of the sewing rope at the middle point of the upper supporting rope 6 of each net from one end of the protective net, gradually winding the net and the two upper supporting ropes 6 together leftward by using half of the sewing rope from the middle point until the two upper supporting ropes 6 are connected together by using a rope clamp, winding the diamond-shaped steel rope net 4 and one upper supporting rope 6 without a pressure reducing ring 8 together by using the sewing rope, and when reaching the hanging seat at the top of the double-arch prestressed steel column 3, penetrating the sewing rope from the front side of the hanging seat (cannot be wound on the hanging seat); turning downwards, continuously repeating the steps until the base 1 is hung, similarly passing through the front side of the hanging seat and continuously turning to the right to wind one lower supporting rope 10 without the pressure reducing ring 8 until the outside of a rope clamp for connecting the two lower supporting ropes 10, winding the net and the two lower supporting ropes 10 together by using a sewing rope from here until the middle point of the lower edge of the rhombic steel rope net 4 is crossed, finally fixing the sewing rope and the rhombic steel rope net 4 by using the rope clamp, putting the rope clamp at a position away from the tail end of the sewing rope, sewing the other half of the sewing rope from the middle point of the upper edge of the rhombic steel rope net 4 to the right until the position at the boundary of the other rhombic steel rope net 4 turns downwards to sew the two rhombic steel rope nets 4 together, when reaching the lower support rope 10, the diamond-shaped steel rope net 4 is turned and wound together with the two support ropes, and finally the ends of the left and right sewed ropes are overlapped.
Step 6: and (3) installing a grid net 7, wherein the grid net 7 is laid and hung on the inner side of the rhombic steel rope net 4, the upper edge of the rhombic steel rope net 4 is overlapped, and the grid net 7 is fixed on the rhombic steel rope net 4 by using binding wires.
And 7: the installation of reinforcing anchor stay cord 9 hangs the link of reinforcing anchor stay cord 9 one end and hangs on the seat with 3 top of two arch-type prestressing steel post, and it is firm to be connected reinforcing anchor stay cord 9's the other end through chicken heart ring 14 and steel cable stock 13, and steel cable stock 13 anchor is in the side slope rock face, and reinforcing anchor stay cord 9 is installed in the left and right sides of same two arch-type prestressing steel post 3.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more here: the anchoring device comprises a base 1, a connecting screw rod 2, a double-arch prestressed steel column 3, a diamond steel rope net 4, a dislocation-resistant anti-falling lock clamp 5, an upper supporting rope 6, a grid net 7, a pressure reducing ring 8, a reinforcing anchor pull rope 9, a lower supporting rope 10, an upper pull anchor rope 11, a side pull anchor rope 12, a steel rope anchor rod 13, a heart ring 14, an anchoring mechanism 100, a supporting mechanism 200, a protection area 300, a side pull mechanism 400 and other terms, but the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (10)
1. The utility model provides a passive protection network of two arch enhancement mode prestressing force steel column high strength which characterized in that: the device comprises a plurality of double-arch prestressed steel columns (3), wherein the bottoms of the double-arch prestressed steel columns (3) are installed on a base (1) through connecting screws (2), and one sides of the double-arch prestressed steel columns (3) are fixed in a side slope rock surface through anchoring mechanisms (100); the adjacent double-arch prestressed steel columns (3) are connected through a supporting mechanism (200), a rhombic steel rope net (4) is arranged on the supporting mechanism (200), and a grid net (7) is paved on the inner side of the rhombic steel rope net (4).
2. The double-arch reinforced prestressed steel column high-strength passive protective net according to claim 1, characterized in that: supporting mechanism (200) are including last supporting rope (6), lower supporting rope (10), go up supporting rope (6) and connect the upper end at adjacent two arch form prestressing force steel post (3), the lower extreme at adjacent two arch form prestressing force steel post (3) is connected in lower supporting rope (10), go up and form between supporting rope (6), lower supporting rope (10) and adjacent two arch form prestressing force steel post (3) protection zone (300), lay rhombus steel cable mesh (4) in protection zone (300).
3. The double-arch reinforced prestressed steel column high-strength passive protective net according to claim 2, characterized in that: hanging rings are arranged at the two ends of the upper supporting rope (6) and the lower supporting rope (10), and hanging seats matched with the hanging rings are arranged on the double-arch prestressed steel columns (3).
4. The double-arch reinforced prestressed steel column high-strength passive protective net according to claim 3, characterized in that: anchoring mechanism (100) are including last anchor rope (11), steel cable stock (13) and heart ring (14), the one end of last anchor rope (11) is connected at two arch form prestressing force steel post (3) tops, the other end that two arch form prestressing force steel post (3) were kept away from in last anchor rope (11) passes through heart ring (14) and links to each other with steel cable stock (13).
5. The double-arch reinforced prestressed steel column high-strength passive protective net according to claim 4, characterized in that: the anchoring mechanism (100) comprises a plurality of reinforcing anchor pulling ropes (9), one end of each reinforcing anchor pulling rope (9) is connected with a hanging seat at the top of the double-arch prestressed steel column (3) through a hanging ring, and the other end of each reinforcing anchor pulling rope (9) is fixedly connected with the steel rope anchor rod (13) through a chicken heart ring (14).
6. The double-arch reinforced prestressed steel column high-strength passive protective net according to claim 5, characterized in that: consolidate anchor stay cord (9) two and be a set of left and right sides that are located same two arch-shaped prestressing force steel post (3), consolidate anchor stay cord (9) and be connected with rhombus steel cable net (4) through anti dislocation anti lock card (5) that drops.
7. The double-arch reinforced prestressed steel column high-strength passive protective net according to claim 6, characterized in that: including side draw mechanism (500), side draw mechanism (500) draw anchor rope (12) including the side, the one end of side draw anchor rope (12) is connected at two arch form prestressing force steel post (3) tops, the other end that two arch form prestressing force steel post (3) were kept away from in side draw anchor rope (12) passes through chicken heart ring (14) and links to each other with steel cable stock (13).
8. The double-arch reinforced prestressed steel column high-strength passive protective net according to claim 7, characterized in that: one end of the upper pulling anchor rope (11) and one end of the side pulling anchor rope (12) close to the double-arch prestressed steel column (3) are uniformly provided with pressure reducing rings (8).
9. The double-arch reinforced prestressed steel column high-strength passive protective net according to claim 8, characterized in that: the grille net (7) is connected to the inner side of the diamond-shaped steel rope net (4) through binding wires and is overlapped on the upper edge of the diamond-shaped steel rope net (4), and the area of the grille net (7) is larger than that of the diamond-shaped steel rope net (4).
10. The double-arch reinforced prestressed steel column high-strength passive protective net according to claim 9, characterized in that: the double-arch prestressed steel columns (3), the upper supporting ropes (6), the lower supporting ropes (10), the upper pull anchor ropes (11), the side pull anchor ropes (12), the diamond steel rope net (4) and the grid net (7) are subjected to hot galvanizing corrosion prevention treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220663987.5U CN217078800U (en) | 2022-03-25 | 2022-03-25 | Double-arch reinforced prestressed steel column high-strength passive protective net |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220663987.5U CN217078800U (en) | 2022-03-25 | 2022-03-25 | Double-arch reinforced prestressed steel column high-strength passive protective net |
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| CN217078800U true CN217078800U (en) | 2022-07-29 |
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| CN202220663987.5U Active CN217078800U (en) | 2022-03-25 | 2022-03-25 | Double-arch reinforced prestressed steel column high-strength passive protective net |
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| CN (1) | CN217078800U (en) |
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