Net falling prevention device for medial strip of highway bridge
By installing detachable anti-fall net devices on the central median of highway bridges, the problems of complex installation, high cost, significant wind impact, and unsightly appearance of traditional anti-fall nets have been solved, achieving the effects of simplified construction, reduced costs, improved safety, and enhanced landscape aesthetics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2026-03-27
AI Technical Summary
Traditional anti-throw netting installation methods are cumbersome and costly. The netting is also greatly affected by wind and poses safety hazards, while not being aesthetically pleasing.
Design a fall-prevention netting device for the median strip of a highway bridge. The device uses a detachable mounting frame fixed to both sides of the median strip. The fall-prevention netting is placed above the median strip, and the mounting frame is fixed to the top of the crash barrier using expansion bolts. The fall-prevention netting consists of two layers of wire mesh. The bottom layer is made of thick steel wire to provide strength, and the top layer is made of fine iron wire mesh to prevent small objects from falling. The mounting frame is a hot-dip galvanized component.
It simplifies the construction process, reduces installation costs, minimizes the impact of wind, improves safety, enhances the aesthetic appeal of the road, and facilitates later maintenance.
Smart Images
Figure CN224047901U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of highway bridge engineering, especially a highway bridge central median strip anti-falling net device. BACKGROUND
[0002] City land is scarce, resulting in new highway overpass railway, highway, river, need to set up anti-throwing net in the separated highway central median strip to prevent falling objects affecting the safety below. The traditional anti-throwing net is generally 0.5 meters to 2 meters high, welded into a rectangle by angle steel, and welded with steel wire mesh on the inside. Reinforcement generally uses two methods: one is to pre-bury anchor bolts in the highway, but the pre-burying precision of anchor bolts needs to be high due to the influence of road transverse and longitudinal slopes and curves, and it is cumbersome to clean cement and other debris on the anchor bolts during installation. The other method is to horizontally drill through the crash barrier wall with a water drill, and connect the anti-throwing net with a large-diameter bolt through a spacer plate. The drilling work is heavy, and it is inconvenient to replace. It also damages the overall structure of the crash barrier wall. The installation process of the two traditional anti-throwing nets is cumbersome, and the cost is high. Anti-throwing nets above 1 meter need to be installed with a crane, and the anti-throwing nets are greatly affected by wind. Once they fall, there is a great safety hazard. At the same time, the anti-throwing net blocks the view of the distant landscape. SUMMARY
[0003] The utility model aims at the problems of traditional anti-throwing net installation process being cumbersome, cost being high, anti-throwing net being greatly affected by wind, once falling, there is a great safety hazard, and anti-throwing net blocking the view of the distant landscape, and provides a highway bridge central median strip anti-falling net device.
[0004] To achieve the above purpose, the utility model adopts the technical scheme that:
[0005] A highway bridge central median strip anti-falling net device, comprising an anti-falling net and two mounting racks, the two sides of the anti-falling net are detachably connected with the mounting racks, and the mounting racks are fixedly installed on the two sides of the median strip.
[0006] The highway bridge central median strip anti-falling net device sets mounting racks on the two sides of the anti-falling net, and then fixes the mounting racks on the two sides of the median strip. This makes the anti-falling net be set above the median strip, better solves the problem of falling objects on the highway central median strip overpass railway, highway, river, increases the landscape view of the road, and enriches the bridge construction technology. The mounting racks and the anti-falling net are detachably connected, which makes the replacement and maintenance convenient and fast.
[0007] As a preferred scheme of the utility model, the anti-falling net surface is parallel to the bridge surface, the mounting frame is fixedly installed on the top of the anti-collision wall, the anti-falling net surface is arranged parallel to the bridge surface, on the one hand, the problem of falling objects on the highway central reservation area crossing railway, highway and river can be better solved, on the other hand, the traditional anti-throwing net is greatly affected by wind force, and great safety risk will occur when falling; the mounting frame is fixedly installed on the top of the anti-collision wall, so that the construction process operation is simple, and large equipment such as a crane is not needed for cooperative construction.
[0008] As a preferred scheme of the utility model, the mounting frame comprises a fixed plate and an expansion bolt, a plurality of through holes are formed in the fixed plate, and the through holes are arranged for mounting the expansion bolt.
[0009] As a preferred scheme of the utility model, the interval distance between the two adjacent through holes is 30-80 cm, in order to ensure the stability of the mounting frame and the convenience of the installation construction process, and to prevent the over-dense expansion bolts from causing irreversible influence on the structure of the anti-collision wall during installation, the interval distance between the two adjacent through holes is 30-80 cm.
[0010] As a preferred scheme of the utility model, the size of the fixed plate is 3 m in length, 50 mm in width and 6 mm in thickness, the length of the fixed plate is set to 3 m to facilitate transportation, and the width is set to 50 mm to fix the anti-falling net.
[0011] As a preferred scheme of the utility model, the anti-falling net comprises a bottom layer anti-falling net and a top layer dense net, the anti-falling net is arranged in two layers, the bottom layer anti-falling net is woven by thicker steel wires to provide sufficient stress strength, and the top layer dense net is woven by thinner iron wires to prevent smaller objects from falling.
[0012] As a preferred scheme of the utility model, the diameter of the steel wire of the bottom layer anti-falling net is 5 mm, and the size of the mesh hole is 25 mm in length and 25 mm in width, in order to make the bottom layer anti-falling net have sufficient strength, the iron wire mesh woven by the steel wire with a diameter of 5 mm is selected, and in order to reduce the weight of the bottom layer anti-falling net, the size of the mesh hole is 25 mm in length and 25 mm in width.
[0013] As a preferred scheme of the utility model, the diameter of the steel wire of the top layer dense net is 1 mm, and the size of the mesh hole is 5 mm in length and 5 mm in width, in order to make the top layer dense net be able to intercept smaller objects and reduce the weight of the top layer dense net as much as possible, the iron wire mesh woven by the steel wire with a diameter of 1 mm is selected, and the size of the mesh hole is 5 mm in length and 5 mm in width.
[0014] As a preferred scheme of the utility model, the mounting frame is a hot-dip galvanizing component.
[0015] As a preferred scheme of the utility model, the bottom layer anti-falling net and the top layer densely arranged net are both hot-dip galvanizing plastic-impregnated steel wire net components.
[0016] As described above, due to the adoption of the above technical scheme, the utility model has the beneficial effects that:
[0017] The highway bridge central median strip anti-falling net device is characterized in that mounting frames are arranged on the two sides of the anti-falling net, and then the mounting frames are fixedly installed on the two sides of the median strip, so that the anti-falling net is arranged above the median strip, the problem of falling objects on the highway central median strip crossing railways, highways and rivers is better solved, the road landscape is increased in ornamental value, and the bridge construction technology is enriched; and the mounting frames and the anti-falling net are detachably connected, so that the replacement and maintenance are convenient and fast in the later period. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 is a structural schematic view of the utility model.
[0019] Figure 2 is a bottom layer anti-falling net structural schematic view of the utility model.
[0020] Figure 3 is a top layer densely arranged net structural schematic view of the utility model.
[0021] Figure 4 is a use schematic view of the utility model.
[0022] Marked in the figure: 1 - top layer densely arranged net, 2 - bottom layer anti-falling net, 3 - fixed plate, 4 - expansion bolt, 5 - anti-collision wall. DETAILED DESCRIPTION
[0023] The utility model will be described in detail below in combination with the drawings.
[0024] In order to make the purpose, technical scheme and advantages of the utility model more clear and explicit, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the utility model.
[0025] Example 1
[0026] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 A highway bridge central median strip anti-falling net device, including anti-falling net and two mounting frames, the two sides of the anti-falling net are detachably connected with the mounting frame, the mounting frame is fixedly installed on the two sides of the median strip.
[0027] The skilled in the art can understand that the highway bridge central median barrier anti-falling net device, by setting the mounting frame on both sides of the anti-falling net respectively, and then fixing and installing the mounting frame on both sides of the median strip, makes the anti-falling net be set above the median strip, which can better solve the problem of falling objects on the highway central median strip crossing railway, highway, river, increase the road landscape ornamental, enrich the bridge construction technology; and the mounting frame and the anti-falling net are detachably connected, which makes the later replacement and maintenance convenient and fast.
[0028] In the preferred embodiment, the anti-falling net surface is parallel to the bridge deck, and the mounting frame is fixedly installed on the top of the crash barrier 5.
[0029] The skilled in the art can understand that the anti-falling net surface is set parallel to the bridge deck, which can better solve the problem of falling objects on the highway central median strip crossing railway, highway, river, and on the other hand, can avoid the traditional anti-falling net being greatly affected by wind, which will cause great safety risk when falling; fixing and installing the mounting frame on the top of the crash barrier 5 makes the construction process operation simple, without using cranes and other large equipment for construction.
[0030] In the preferred embodiment, the mounting frame includes a fixed plate 3 and an expansion bolt 4, and a plurality of through holes are formed on the fixed plate 3.
[0031] The skilled in the art can understand that the through holes are provided for installing the expansion bolt 4.
[0032] In the preferred embodiment, the interval distance between adjacent two through holes is 30cm to 80cm.
[0033] The skilled in the art can understand that in order to ensure the stability of the mounting frame and considering the convenience of installation and construction process, and also to prevent the over-dense expansion bolts 4 from causing irreversible impact on the structure of the crash barrier 5 during installation, the interval distance between adjacent two through holes is 30cm to 80cm.
[0034] In the preferred embodiment, the size of the fixed plate 3 is 3m in length, 50mm in width and 6mm in thickness.
[0035] The skilled in the art can understand that the length of the fixed plate 3 is set to 3m to facilitate transportation, and the width is set to 50mm to fix the anti-falling net.
[0036] In the preferred embodiment, the anti-falling net includes a bottom layer anti-falling net 2 and a top layer dense net 1.
[0037] The skilled in the art can understand that the anti-falling net is set as two layers, wherein the bottom layer anti-falling net 2 is woven by thicker steel wires to provide sufficient stress strength, and the top layer dense net 1 is woven by thinner steel wires to prevent smaller objects from falling.
[0038] In the preferred embodiment, the diameter of the steel wire of the bottom layer anti-falling net 2 is 5 mm, and the size of the mesh is 25 mm in length and 25 mm in width.
[0039] The skilled in the art can understand that, in order to make the bottom layer anti-falling net 2 have sufficient strength, the wire mesh is woven by steel wires with a diameter of 5 mm, and in order to reduce the weight of the bottom layer anti-falling net 2 itself, the size of the mesh is 25 mm in length and 25 mm in width.
[0040] In the preferred embodiment, the diameter of the steel wire of the top layer dense net 1 is 1 mm, and the size of the mesh is 5 mm in length and 5 mm in width.
[0041] The skilled in the art can understand that, in order to make the top layer dense net 1 be able to intercept smaller objects while minimizing its own weight, the wire mesh is woven by steel wires with a diameter of 1 mm, and the size of the mesh is 5 mm in length and 5 mm in width.
[0042] In the preferred embodiment, the mounting frame is a hot-dip galvanized member.
[0043] In the preferred embodiment, the bottom layer anti-falling net 2 and the top layer dense net 1 are both hot-dip galvanized plastic steel wire mesh members.
[0044] Example 2
[0045] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , a specific use method of the anti-falling net device for highway bridge central median.
[0046] The width of the anti-falling net can be processed in the factory according to the width of the central median on site, the length of the bottom layer anti-falling net 2 is cut into standard lengths of 3-5 meters in advance, and the top layer dense net 1 is installed in a whole roll and has a length that is suitable for the cross-section of the central median, and can be cut after being laid on site.
[0047] First, install the drop net, first lay the bottom hot-dip galvanized plastic skeleton anti-falling net, both sides do not exceed the anti-collision wall 5 boundary line, and then lay the upper hot-dip galvanized plastic dense net. Second, install the fixed plate 3, use hot-dip galvanized flat steel, install in the middle part of the anti-collision wall 5 for positioning. Third, drill holes in the anti-collision wall 5, reinforce, through the hole position on the fixed plate 3, drill holes in the top of the anti-collision wall 5 at intervals of 50 cm by electric drill, use Φ10 drill bit, after drilling, use a hair dryer to clean the hole, install Φ8 stainless steel expansion bolts 4 for fixation, the length of the bolt is 100 m.
[0048] In the description of the specific embodiments of the present application, the terms of orientation or position relationship such as "upper", "lower", "left", "right", "center", "inner", "outer" and the like are expressed based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product / device / apparatus of the present application is usually used. These terms of orientation or position relationship are only for the convenience of describing the present application or simplifying the description of the specific embodiments, and for the convenience of the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present application.
[0049] In addition, the terms "horizontal", "vertical", "suspension", "parallel" and the like do not mean that the corresponding device / component / element must be absolutely horizontal or vertical or suspended or parallel, but can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Alternatively, it can be simplified to understand that the corresponding device / component / element is arranged in the direction of "horizontal", "vertical", "suspension", "parallel" and the like, and can have an error / deviation of ±10% with respect to the corresponding direction, more preferably an error / deviation of ±8% or less, more preferably an error / deviation of ±6% or less, more preferably an error / deviation of ±5% or less, and more preferably an error / deviation of ±4% or less. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present application.
[0050] In addition, the terms "first", "second", "third" and the like in the description of the embodiments of the present application are only used to distinguish the same or similar components, and should not be understood as emphasizing or implying the relative importance of the specific components.
[0051] In addition, in the description of the embodiments of the present application, "several", "a plurality of", "several" represent at least 2. It can be 2, 3, 4, 5, 6, 7, 8, 9, etc. in any case, or even more than 9.
[0052] Furthermore, in the description of the technical scheme of the utility model, unless another explicit provision / limitation / restriction, the place where the term "set" "installation" "connected" "connected" "provided with" "laid" "arranged" should be broadly understood, for example, it can be fixedly connected, can be detachably connected, or integrally connected, can be welding, riveting, bolting, screw connection and other commonly used connection means in the art. This connection can be mechanical connection, electrical connection or communication connection; can be directly connected, can be indirectly connected through an intermediate medium, and can be connected inside two elements.
[0053] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A highway bridge median barrier anti-netting device, characterized by, The invention relates to a fall protection net and two mounting racks, the fall protection net comprising a bottom layer of fall protection net (2) and a top layer of densely packed net (1), the two sides of the fall protection net being detachably connected with the mounting racks, the mounting racks being fixedly installed on the two sides of the partition belt, the net surface of the fall protection net being parallel to the bridge surface, the mounting racks being fixedly installed on the top of the crash barrier (5), the mounting racks comprising a fixed plate (3) and an expansion bolt (4), the fixed plate being arranged at the middle part of the crash barrier, a plurality of through holes being formed in the fixed plate (3), the fixed plate being made of flat steel.
2. A highway bridge median barrier anti-netting device according to claim 1, characterized in that, The interval distance between two adjacent through holes is 30-80 cm.
3. A highway bridge median barrier anti-netting device according to claim 2, wherein, The size of the fixed plate (3) is 3 m in length, 50 mm in width and 6 mm in thickness.
4. A highway bridge median barrier anti-netting device according to claim 1, wherein, The diameter of the steel wire of the bottom layer of fall protection net (2) is 5 mm, and the size of the mesh is 25 mm in length and 25 mm in width.
5. A highway bridge median barrier anti-netting device according to claim 1, wherein, The diameter of the steel wire of the top layer of densely packed net (1) is 1 mm, and the size of the mesh is 5 mm in length and 5 mm in width.
6. A highway bridge median barrier anti-climber as defined in any one of claims 1-5, wherein, The mounting racks are hot-dip galvanized components.
7. A highway bridge median barrier anti-climb device according to claim 6 wherein, The bottom layer of fall protection net (2) and the top layer of densely packed net (1) are both hot-dip galvanized plastic-impregnated steel wire net components.