Corrosion resistant passive guard net

Abstract

This utility model belongs to the technical field of slope protection netting, and discloses a corrosion-resistant passive protection netting, including a foundation, pin bolts, steel wire ring mesh, grid mesh, anchor ropes, anchor rods, upper support ropes, and lower support ropes. It also includes fiberglass I-beam columns. The bottom end of each fiberglass I-beam column is bolted to a pin connector, which is connected to a support plate on the foundation via the pin bolts. The top of each fiberglass I-beam column is connected to a top plate, which connects to the top ends of the upper support ropes and anchor ropes. This utility model's corrosion-resistant passive protection netting uses fiberglass I-beam columns instead of traditional steel I-beam columns, significantly improving corrosion resistance and reducing material costs.

Description

Technical Field

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

[0002] Passive slope protection netting consists of four main parts: wire rope netting, ring netting, pressure-reducing rings in the fixing system, and steel columns. The steel columns and wire rope netting are connected and combined to form a whole, providing surface protection for the protected area, thereby preventing the collapse of rocks and soil and playing a role in slope protection.

[0003] To enhance the corrosion resistance of passive protective netting, most of its metal components are galvanized, protected by a zinc layer. However, in coastal mountainous areas with high salinity, the corrosion resistance of galvanized components faces severe challenges. Thin zinc coatings, poor adhesion, and impacts can all lead to corrosion failure, making them susceptible to salt spray corrosion. Severe corrosion can cause the passive protective netting to fail. Furthermore, hot-dip galvanizing manufacturers often charge based on the weight of the galvanized parts, with steel columns being a crucial component and thus commanding the highest hot-dip galvanizing costs.

[0004] Therefore, it is necessary to develop a corrosion-resistant passive protective net to address the aforementioned defects. Utility Model Content

[0005] The purpose of this invention is to provide a corrosion-resistant passive protective net that uses fiberglass I-beams instead of the original steel I-beams, which significantly improves corrosion resistance and reduces material costs.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model relates to a corrosion-resistant passive protective net, comprising a foundation, pin bolts, a steel wire ring net, a grid net, anchor ropes, anchor rods, upper support ropes, and lower support ropes. It also includes fiberglass I-beam columns. The bottom end of each fiberglass I-beam column is bolted to a pin connector, which is connected to a support plate on the foundation via the pin bolts. A top plate is connected to the top of each fiberglass I-beam column, and the top plate connects to the top ends of the upper support ropes and anchor ropes.

[0008] Furthermore, the fiberglass I-beam column is made entirely of fiberglass.

[0009] Furthermore, the fiberglass I-beam column is constructed by covering the outside of a steel I-beam with a fiberglass protective layer.

[0010] Furthermore, the two pin connectors are symmetrically clamped face-to-face on the web plate at the bottom end of the fiberglass I-beam column and fixed with bolts.

[0011] Furthermore, the top mounting plate is bolted to the flange plate at the top of the fiberglass I-beam column facing away from the hillside, and through holes are provided on the top mounting plate for bolting the upper support rope and the anchor rope.

[0012] Furthermore, it also includes foot pedals, with multiple foot pedals symmetrically arranged on the left and right sides of the fiberglass I-beam column, and multiple foot pedals on one side are equally spaced; the foot pedals are mounted on the front and rear flanges of the fiberglass I-beam column by screws on both sides.

[0013] Furthermore, the foot pedal is a hot-dip galvanized sheet metal part, the main body of the foot pedal is a plate with an L-shaped cross-section, and the front panel of the foot pedal is provided with outer baffles bent inward on both sides. The two outer baffles are snapped onto the outer side walls of the front and rear wing plates of the fiberglass I-beam column, and through holes for screws are provided on the outer baffles.

[0014] Furthermore, the top panel of the foot pedal is bent downwards on both sides and inner baffles are provided. The inner baffles abut against the inner side wall of the fiberglass I-beam column wing plate, and the inner baffles are provided with threaded holes for threaded connecting screws.

[0015] Furthermore, the wire rings of the wire mesh are bound together using binding wire knots; the binding wire knots are secured with double-strand new aluminum alloy binding wire.

[0016] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0017] This utility model presents a corrosion-resistant passive protective net. By replacing the steel I-beams in the existing technology with fiberglass I-beams, the corrosion-resistant properties of fiberglass are utilized to improve its resistance to salt spray corrosion and increase its service life. Furthermore, the pin connectors and top mounting plates are bolted together, making them detachable. Even in cases of severe corrosion, individual columns can be replaced, reducing maintenance costs compared to replacing the entire column.

[0018] Furthermore, by replacing the existing steel I-beams with larger fiberglass I-beams, which have a density approximately one-quarter that of steel columns of the same specifications, the weight of the components is reduced, thus lowering the labor intensity of installation workers. Fiberglass is also relatively cheaper than steel. By applying a fiberglass protective layer to the outer surface of the steel I-beams, not only is their resistance to salt spray corrosion improved, increasing their service life, but the strength requirements of the steel column are also maintained. Using two pin-connectors symmetrically clamped together at the bottom web of the fiberglass I-beam ensures high connection strength and prevents brittle damage to the fiberglass component. Installing the top plate on the flange facing away from the slope at the top of the fiberglass I-beam allows the anchor ropes to bear more impact force during rockfalls, reducing the impact on the fiberglass I-beam and improving its stress distribution. Adding footrests facilitates access to the top of the fiberglass I-beams for on-site installation and maintenance personnel. The foot pedals, formed by bending sheet metal, are easy to manufacture and have a lower cost. The inner and outer baffles clamp the flanges of the fiberglass I-beam column, increasing the stress-bearing area and preventing brittle damage to the fiberglass components at the through-holes. The wire rings are secured with zinc-aluminum alloy binding wire knots, preventing galvanized layer peeling, improving corrosion resistance, and reducing the risk of the wire rings disintegrating. The use of double-strand binding wire knots ensures that even if one strand breaks, the bond's strength will not be significantly affected. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the cross-section of the corrosion-resistant passive protective net of this utility model;

[0021] Figure 2 This is a schematic diagram of the bottom of the fiberglass I-beam column in this utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the foot pedal in this utility model;

[0023] Figure 4 This is a partial front view schematic diagram of the corrosion-resistant passive protective net of this utility model;

[0024] Figure 5 This is a schematic diagram of the nodes of the steel wire ring mesh in this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Foundation base; 2. Fiberglass I-beam column; 3. Pin bolt; 4. Top plate; 5. Wire mesh ring; 501. Wire ring; 502. Binding wire joint; 6. Grating mesh; 7. Anchor rope; 701. Pressure relief ring; 8. Anchor bolt; 9. Foot pedal plate; 901. Outer baffle; 902. Inner baffle; 903. Through hole; 904. Threaded hole; 10. Pin connector; 11. Upper support rope; 12. Lower support rope. Detailed Implementation

[0026] The core of this invention is to provide a corrosion-resistant passive protective net, which uses fiberglass I-beams to replace the original steel I-beams, significantly improving corrosion resistance and reducing material costs.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Refer to the attached diagram. Figure 1 This is a schematic diagram of the cross-section of the corrosion-resistant passive protective net of this utility model; Figure 2 This is a schematic diagram of the bottom of the fiberglass I-beam column in this utility model; Figure 3 This is a schematic diagram of the three-dimensional structure of the foot pedal in this utility model; Figure 4 This is a partial front view schematic diagram of the corrosion-resistant passive protective net of this utility model; Figure 5 This is a schematic diagram of the nodes of the steel wire ring mesh in this utility model.

[0030] In one specific implementation, such as Figures 1-4As shown, the corrosion-resistant passive protection net of this utility model includes a base 1, pin bolts 3, wire mesh ring 5, grid mesh 6, anchor rope 7, anchor rod 8, upper support rope 11, and lower support rope 12. The main structure of the corrosion-resistant passive protection net in this utility model is consistent with that in the prior art, with the anchor rod 8 anchored to the upper slope surface, and one end of the anchor rope 7 connected to the rope buckle at the tail end of the anchor rod 8. A pressure-reducing ring 701 is provided on the anchor rope 7. The upper support rope 11 and lower support rope 12 fix the upper and lower ends of the wire mesh ring 5 and the grid mesh 6, forming the main body of the passive protection to intercept falling rocks, which will not be elaborated further. A significant innovation of this utility model compared to the prior art is the inclusion of fiberglass I-beam columns 2, that is, the use of fiberglass I-beam columns 2 to replace the steel I-beam columns in the prior art. The bottom end of the fiberglass I-beam column 2 is bolted with a pin connector 10, which is connected to the support plate on the foundation base 1 via a pin bolt 3. The fiberglass I-beam column 2 can swing around the pin bolt 3. The top end of the fiberglass I-beam column 2 is connected with a top hanging plate 4, which is connected to the top end of the support rope 11 and the anchor rope 7.

[0031] By replacing the existing steel I-beam columns with fiberglass I-beam columns 2, the corrosion-resistant properties of fiberglass material can be utilized to improve its resistance to salt spray corrosion and increase its service life. Furthermore, both the pin connector 10 and the top mounting plate 4 are bolted together, making them detachable. Even in the event of severe corrosion, they can be replaced individually, reducing maintenance costs compared to replacing the entire column.

[0032] Specifically, the fiberglass I-beam column 2 is made entirely of fiberglass.

[0033] In existing technology, the commonly used steel I-beam columns are size 18, i.e., 180mm × 94mm × 6.5mm. Based on bending strength calculations, replacing them with 200×100×8mm fiberglass I-beams can meet the strength requirements. Furthermore, through the applicant's multiple impact tests, fiberglass I-beams one or two sizes larger can meet the usage requirements. Given that the energy absorption level of the passive protective net is ≤100kJ, replacing them with fiberglass I-beams made entirely of fiberglass material fully meets the usage requirements.

[0034] By replacing the existing steel I-beam columns with larger fiberglass I-beam columns (2), which have a density approximately one-quarter that of steel columns of the same specifications, the weight of the components is reduced, thus reducing the labor intensity of installation workers. At the same time, the cost of fiberglass is also lower than that of steel.

[0035] In another embodiment of this invention, the fiberglass H-beam column 2 is constructed by covering the outside of a steel H-beam with a fiberglass protective layer. This involves bonding the fiberglass protective layer to the outer surface of the steel H-beam. Fiberglass H-beam columns 2 manufactured in this way can be used in applications requiring high energy absorption levels.

[0036] By coating the outer surface of steel I-beams with a fiberglass protective layer, not only can their resistance to salt spray corrosion be improved and their service life increased, but the strength requirements of the steel column are also maintained.

[0037] In one specific embodiment of this utility model, such as Figure 1 and Figure 2 As shown, two pin connectors 10 are symmetrically clamped face-to-face on the web plate at the bottom end of the fiberglass I-beam column 2, and are fixed with bolts. Both the pin connectors 10 and the bolts are hot-dip galvanized components. There are at least two bolts used here.

[0038] Specifically, the inner sidewall of the pin connector 10 is provided with a step, which can increase the distance between the two pin connector 10 lug ends and thus meet the thickness adaptation of the support plate on the base 1.

[0039] By using two pin connectors 10 symmetrically clamped face-to-face on the web plate at the bottom of the fiberglass I-beam column 2, the connection strength is high and no brittle damage to the fiberglass component will occur.

[0040] In one specific embodiment of this utility model, such as Figure 1 As shown, the top plate 4 is bolted to the wing plate at the top of the fiberglass I-beam column 2 away from the hillside, and through holes are opened on the top plate 4 for bolting the support rope 11 and the anchor rope 7.

[0041] By properly installing the top mounting plate 4 on the wing plate at the top of the fiberglass I-beam column 2 away from the hillside, the anchor rope 7 can bear more impact force when a rockfall occurs, reducing the impact on the fiberglass I-beam column 2 and improving its stress condition.

[0042] In one specific embodiment of this utility model, such as Figures 1-3 As shown, the corrosion-resistant passive protective net of this utility model also includes foot pedals 9. Multiple foot pedals 9 are symmetrically arranged on the left and right sides of the fiberglass I-beam column 2, with multiple foot pedals 9 on one side spaced at equal intervals. The foot pedals 9 are installed on the front and rear flanges of the fiberglass I-beam column 2 by screws on both sides, and the screws here can be self-tapping screws.

[0043] By adding foot pedals 9, it is easier for on-site installation and maintenance personnel to climb to the top of the fiberglass I-beam column 2.

[0044] Specifically, such as Figure 3As shown, the foot pedal plate 9 is a hot-dip galvanized sheet metal part, and the main body of the foot pedal plate 9 is a plate with an L-shaped cross-section. The front panel of the foot pedal plate 9 has two outer baffles 901 that are bent inwards on both sides. The two outer baffles 901 are snapped onto the outer walls of the front and rear flanges of the fiberglass I-beam column 2. Through holes 903 for through screws are provided on the outer baffles 901. The through holes 903 are located in the middle of the outer baffles 901.

[0045] Specifically, such as Figure 3 As shown, the top panel of the foot pedal 9 has inner baffles 902 bent downwards on both sides. The inner baffles 902 abut against the inner wall of the wing plate of the fiberglass I-beam column 2, and the inner baffles 902 have threaded holes 904 for threaded connecting screws. That is to say, the threaded holes 904 and the through holes 903 are coaxially arranged, and the sheet metal thickness of the foot pedal 9 is not less than 4 mm.

[0046] The foot pedal piece 9, formed by bending sheet metal, is easy to manufacture and has a low cost. The inner baffle 902 and the outer baffle 901 clamp the flange of the fiberglass I-beam column 2, increasing the stress area and preventing the fiberglass component from brittle damage at the through hole.

[0047] In one specific embodiment of this utility model, such as Figure 4 and Figure 5 As shown, the wire mesh 5 consists of multiple interlocking wire rings 501, each wire ring 501 comprising multiple overlapping wire loops. The wire rings 501 are bound together using binding knots 502, with three binding knots 502 evenly distributed around the circumference of each wire ring 501. The binding knots 502 are secured with double-strand zinc-aluminum alloy binding wire.

[0048] Compared to existing technologies that use cylindrical clamps to bind multiple steel wire rings of the 501 wire ring together, the clamps are made of galvanized steel sheets and require electric or hydraulic locking tools for tightening. However, the locking tongue of the clamp is bent and tightened by the hard pliers of the locking tool. This process often damages the galvanized coating on the clamp surface, causing slight localized peeling. In coastal mountainous areas affected by salt spray, the service life is significantly reduced, frequently causing the 501 wire ring to disintegrate and affecting the normal operation of the passive protection net.

[0049] By using a binding wire knot 502 formed by zinc-aluminum alloy binding wire to tighten the steel wire ring 501, the zinc coating will not peel off, improving corrosion resistance and reducing the risk of the steel wire ring 501 disintegrating; by using a binding wire knot 502 with double-strand binding wire, even if one strand breaks, it will not seriously affect the binding strength.

[0050] In summary, this novel corrosion-resistant passive protective netting, by replacing the existing steel I-beams with fiberglass I-beams (2), leverages the corrosion-resistant properties of fiberglass to improve its resistance to salt spray corrosion and extend its service life. Furthermore, both the pin connectors (10) and the top mounting plate (4) are bolted, making them detachable. Even in cases of severe corrosion, individual replacements are possible, reducing maintenance costs compared to replacing the entire column. Additionally, replacing the existing steel I-beams with larger fiberglass I-beams (2), which have a density approximately one-quarter that of steel columns of the same specifications, reduces component weight and thus the labor intensity of installation workers. Fiberglass is also less expensive than steel. By applying a fiberglass protective layer to the outer surface of the steel I-beam, its resistance to salt spray corrosion is improved, extending its service life while maintaining the required strength of the steel column. The use of two symmetrically clamped pin connectors (10) at the bottom web of the fiberglass I-beams (2) ensures high connection strength and prevents brittle damage to the fiberglass components. The top mounting plate 4 is installed on the wing plate at the top of the FRP I-beam column 2, away from the hillside. In the event of a rockfall, the anchor rope 7 bears more of the impact force, reducing the impact on the FRP I-beam column 2 and improving its stress condition. The addition of footrests 9 facilitates the climbing of on-site installation and maintenance personnel to the top of the FRP I-beam column 2. The footrests 9, formed by bending sheet metal, are easy to manufacture and have a low cost. The inner baffle 902 and outer baffle 901 clamp the wing plate of the FRP I-beam column 2, increasing the stress-bearing area and preventing brittle damage to the FRP components from the through-holes. The wire knot 502, formed by zinc-aluminum alloy binding wire, tightens the wire ring 501, preventing the galvanized layer from peeling off, improving corrosion resistance, and reducing the risk of the wire ring 501 disintegrating. The use of double-strand binding wire in the knot 502 ensures that even if one strand breaks, the binding strength will not be significantly affected.

[0051] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0052] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A corrosion-resistant passive protective net, comprising a base (1), pin bolts (3), a steel wire ring mesh (5), a grid mesh (6), anchor ropes (7), anchor bolts (8), an upper support rope (11), and a lower support rope (12), characterized in that, It also includes a fiberglass I-beam column (2), the bottom end of which is bolted with a pin connector (10), the pin connector (10) is connected to the support plate on the foundation base (1) through the pin bolt (3); the top end of the fiberglass I-beam column (2) is connected with a top hanging plate (4), the top hanging plate (4) is connected to the top end of the upper support rope (11) and the anchor rope (7).

2. The corrosion-resistant passive protective net according to claim 1, characterized in that, The fiberglass I-beam column (2) is constructed by covering the outside of a steel I-beam with a fiberglass protective layer.

3. The corrosion-resistant passive protective net according to claim 1, characterized in that, The two pin connectors (10) are symmetrically clamped face to face on the web plate at the bottom end of the fiberglass I-beam column (2) and fixed by bolts.

4. The corrosion-resistant passive protective net according to claim 1, characterized in that, The top plate (4) is bolted to the wing plate at the top of the fiberglass I-beam column (2) away from the hillside. The top plate (4) has through holes for bolting the upper support rope (11) and the anchor rope (7).

5. The corrosion-resistant passive protective net according to claim 1, characterized in that, It also includes foot pedals (9), and multiple foot pedals (9) are symmetrically arranged on the left and right sides of the fiberglass I-beam column (2), with multiple foot pedals (9) on one side being equally spaced; the foot pedals (9) are installed on the front and rear wing plates of the fiberglass I-beam column (2) by screws on both sides.

6. The corrosion-resistant passive protective net according to claim 5, characterized in that, The foot pedal piece (9) is a hot-dip galvanized sheet metal part. The main body of the foot pedal piece (9) is a plate with an L-shaped cross section. The front panel of the foot pedal piece (9) is bent inward on both sides and an outer baffle (901) is provided. The two outer baffles (901) are snapped onto the outer side walls of the front and rear wings of the fiberglass I-beam column (2). The outer baffle (901) is provided with through holes (903) for through screws.

7. The corrosion-resistant passive protective net according to claim 6, characterized in that, The top panel of the foot pedal (9) is bent downward on both sides and an inner baffle (902) is provided. The inner baffle (902) abuts against the inner side wall of the wing plate of the fiberglass I-beam column (2). The inner baffle (902) is provided with a threaded hole (904) for a threaded connecting screw.

8. The corrosion-resistant passive protective net according to claim 1, characterized in that, The wire rings (501) of the wire ring mesh (5) are tied together by binding wire knots (502); the binding wire knots (502) are tightened by double strands of new aluminum alloy binding wire.

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