Ice falling prevention device for surface of cross tie beam of bridge tower

Abstract

The utility model relates to an anti-ice-falling device for the surface of a cross tie beam of a bridge tower, which comprises a plurality of anti-ice-falling devices arranged on the surface of the cross tie beam, each anti-ice-falling device comprises an anti-ice-falling clamp, a plurality of raised fixing pieces and a plurality of extended connecting pieces, and the anti-ice-falling clamps comprise a first anti-ice-falling clamp and a second anti-ice-falling clamp. The first anti-ice-falling clamp and the second anti-ice-falling clamp are fixedly arranged on the edges of the left side and the right side of the cross tie beam respectively, and the first anti-ice-falling clamp and the second anti-ice-falling clamp are connected into a whole through the extending connecting pieces and the protruding fixing pieces and fixed to the upper surface of the cross tie beam. The limiting baffles arranged at certain intervals prevent solid accumulated ice from sliding on the upper surface of the bridge tower cross tie beam, meanwhile, lateral drainage of the upper surface of the cross tie beam cannot be hindered, the phenomenon that a traditional drainage channel becomes a'water blocking channel 'due to icing is avoided, and the size of a single block of ice accumulated on the upper surface of the cross tie beam is limited within a safety threshold value as much as possible.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, and more specifically, to an anti-icing device for the surface of the crossbeam of a bridge tower. Background Technology

[0002] With the development of bridge technology, the application of long-span bridges has gradually increased. In common long-span bridges, the transverse tie beams, through rigid transverse connections, are the core link that transforms the bridge towers from "discrete columns" into "spatial frames," significantly improving the overall bending stiffness of the bridge towers and making them an indispensable structural component of long-span bridges. The enormous size of the bridge towers in long-span bridges often places the transverse tie beams at heights of tens or even hundreds of meters. During freezing rain, surface icing is common, and the resulting ice accumulation and sliding pose a significant threat to traffic safety below the bridge.

[0003] The formation of ice on the surface of the bridge tower's crossbeams stems from the coupling of multiple physical fields, essentially a dynamic interplay between liquid migration and solid condensation. When freezing rain impacts the surface of the crossbeams, some supercooled rain fails to freeze instantly due to insufficient heat transfer, gradually accumulating into a continuous water film. As the water film thickness increases on the upper surface of the bridge tower's crossbeams, the supercooled rain further solidifies during continuous heat exchange with the low-temperature surface. The residual supercooled rain on the upper surface of the crossbeams migrates along the cross slope towards lower potential energy areas under gravity, but the liquid water near the upper part of the water film in contact with the air continues to migrate gradually towards the edge of the crossbeam and is discharged through the drainage holes under gravity. The liquid water near the lower part in contact with the crossbeams freezes rapidly upon contact with the cold source. In the event of prolonged freezing rain, the large area of ​​supercooled rain on the upper surface of the bridge tower's crossbeams, its gentle slope, and slow drainage make it highly susceptible to the formation of thick ice deposits. The large overall size of the bridge towers of long-span bridges and the wide rain-receiving area of ​​the crossbeams make them more prone to forming large-area, high-mass surface ice deposits during freezing rain. As the ice gradually melts, due to the difference in specific heat capacity between the bridge tower structure and rainwater, the ice at the contact surface melts preferentially into a water film. The presence of this water film significantly reduces the adhesion between the ice and the surface of the bridge tower's crossbeams. Under the influence of surface slope or crosswinds, lateral forces can cause the ice to slide as a whole. Large chunks of ice slide off the surface of the crossbeams and break off, forming large ice strips that fall, posing a significant safety hazard to the road and vehicles below.

[0004] In the construction field, traditional non-manual snow and ice removal methods, such as the snow-blocking and ice-melting structures used in Chinese patent CN202577707U, can collect rainwater to some extent. However, in cold weather, excessively cold rain can freeze into ice, causing blockages, frost heave, and even complete damage and detachment of drainage pipes. Existing methods to ensure the drainage capacity of pipes and water tanks focus on heating the drainage and de-icing areas through air or water diversion, as exemplified by Chinese patents CN218028543U and CN203654121U. These heating technologies are energy-intensive and dependent on external energy sources, and the heating elements are also prone to accidental damage during their service life. However, active intervention for ice accumulation on the surface of bridge tower crossbeams often involves manual removal after the ice has reached a certain thickness. This process inevitably causes some damage to the surface material of the crossbeams, and working at heights poses significant safety risks to workers. In the field of bridge engineering, apart from manual removal, there is no systematic method to address the problem of surface ice accumulation.

[0005] Existing anti-ice-fall devices mostly rely on snow barriers, drainage ditches, and water collection troughs. When the snow load is excessive, the pressure release cannot be flexibly adjusted, leading to deformation or damage to the structural surface or water collection trough due to overload. Without insulation or heating measures, the frozen water may block drainage paths. Furthermore, heating and insulation devices suffer from high energy consumption, susceptibility to damage, and high maintenance costs. Traditional manual de-icing requires working at heights, posing safety risks and easily damaging the coating on the crossbeams. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an anti-ice-fall device for the surface of the crossbeam of a bridge tower, which can prevent large-mass ice from sliding down the upper surface of the crossbeam, greatly reducing the volume and mass of a single ice block, and avoiding the risks and structural damage caused by high-altitude operations.

[0007] The technical solution adopted by this utility model to solve its technical problem is: to construct an anti-icing device for the surface of a bridge tower crossbeam, including multiple anti-icing devices disposed on the surface of the crossbeam. The anti-icing device includes an anti-icing clamp, multiple protruding fixing parts, and multiple extension connecting parts. The anti-icing clamp includes a first anti-icing clamp and a second anti-icing clamp. The first anti-icing clamp and the second anti-icing clamp are respectively fixedly disposed at the edges of the left and right sides of the crossbeam. The first anti-icing clamp and the second anti-icing clamp are connected into a whole by the multiple extension connecting parts.

[0008] The first anti-fall ice clamp and the extended connector, the second anti-fall ice clamp and the extended connector, and adjacent extended connectors are all connected and fixed to the upper surface of the crossbeam by protruding fasteners.

[0009] According to the above scheme, the ice-falling clamp includes an ice baffle, an extension rail, a clamping plate and an auxiliary ice baffle. The ice baffle is made of angle steel. The ice baffle is fixedly installed on the upper surface of the front end of the extension rail. The clamping plate is fixedly installed on the lower surface of the front end of the extension rail. The surface of the clamping plate is covered with an anti-slip rubber pad.

[0010] The elongated track includes a wide section track, a wide-to-narrow transition section track, and a narrow section track. The wide section track is fixedly connected to the clamping plate. The end of the narrow section track is provided with a rounded corner post. Adjustable pitch racks and auxiliary ice barriers are provided on both sides of the narrow section track. There are two auxiliary ice barriers, which are respectively vertically fixed on both sides of the narrow section track. The length of the adjustable pitch rack is 30-55cm and starts from the end of the narrow section track. The auxiliary ice barriers are located 5-10cm away from the end of the adjustable pitch rack.

[0011] According to the above scheme, the ice baffle 101 forms an angle of 110° to 135° with the extension track 104, the included angle between the left and right sides of the ice baffle is 90° to 120°, the height of the ice baffle is 5 to 7 cm, and the height of the clamping plate is 8 to 10 cm.

[0012] According to the above scheme, the length of the extended track is 50-75cm, the width of the wide track is 5-7cm, and the width of the narrow track is 3-5cm.

[0013] According to the above scheme, the auxiliary ice barrier is formed by stamping three equilateral closed triangular structures of 15-20cm steel purlins.

[0014] According to the above scheme, the protruding fixing component includes a gear box, and fastening lugs are provided on both the left and right sides of the gear box. Equal diameter gears are symmetrically arranged on the left and right sides of the gear box. A rotating handle is provided on the top of the gear and passes through the surface of the gear box. The gear is rotated from the outside by rotating the handle. A rectangular slot is opened in the lower part of the gear box to expose the gear. The gear teeth are spaced 5-7cm apart. Fastening bolts are fixedly provided on the fastening lugs, and the fastening lugs are fixedly connected to the surface of the crossbeam by the fastening bolts.

[0015] According to the above scheme, the extension connector is long and narrow, and the end of the extension connector is fixedly disposed on the side of the gear box.

[0016] According to the above scheme, the adjacent anti-fall ice device units are spaced 2 to 5 meters apart.

[0017] According to the above scheme, the anti-slip pad is made of high-performance rubber.

[0018] According to the above scheme, the anti-fall ice clamp is made of Q235 steel, and the protruding fixing member is made of Q235 steel.

[0019] The anti-icing device for the surface of the crossbeam of a bridge tower, as described in this utility model, has the following beneficial effects:

[0020] 1. This utility model, with minimal impact on the surface structure of the bridge tower and the appearance of the bridge itself, significantly reduces the risk of ice slippage through the dual action of geometric limiting of the ice baffle and multi-point clamping of the protruding fixing component. The ice baffle is welded to the edge of the cross beam at an angle of 110° to 135°, forming a physical barrier together with the auxiliary ice baffle to prevent the ice from sliding out as a whole; the gear box and fastening ear plate in the protruding fixing component are 5-7cm higher than the surface of the cross beam, forming a multi-point recessed clamping structure at the bottom of the ice. Utilizing the difference in specific heat capacity between ice and metal, the ice layer at the contact surface is weakened first, enhancing the reliability of ice fixation while reducing the cross section of the ice, thus achieving the segmentation of large ice blocks. This reduces the speed at which the ice slides to the edge of the cross beam, effectively preventing large ice blocks from falling and impacting the bridge surface.

[0021] 2. This utility model forms a "strip + dot" composite segmentation network by extending the array of connectors and the array of protruding fixing parts. Each anti-ice-fall unit is arranged along the width of the transverse beam, and a gear box and adjustable rack are set along the length of the transverse beam to cut the ice into a rectangular grid. The dense distribution of protruding fixing parts further weakens the cross-sectional strength of the ice layer. During the melting process, cracks extend along the grid, eventually forming small ice strips with a smaller mass. Compared with traditional untreated large blocks of ice weighing hundreds of kilograms, the hazards caused by falling ice are reduced, greatly mitigating the threat to traffic under the bridge.

[0022] 3. This utility model adopts an intermittent water-blocking design. The plane angle and vertical slope of the ice baffle plate work together to guide the water flow to the side to discharge, avoiding the "water blocking effect" caused by ice blockage in traditional drainage channels. Moreover, the ice baffle plate of a certain height can effectively intercept the ice-water mixture and prevent the melt water from refreezing into ice during low temperature periods. No external energy is required, and the problems of aging electric heating elements and high energy consumption are completely avoided.

[0023] 4. This utility model completely replaces manual operation by combining mechanical ice-fixing with a natural melting mechanism, avoiding physical wear on bridge tower materials by ice-removing tools. With zero energy consumption and high reliability as its core, it achieves ice slip control, mass segmentation, drainage optimization, and simplified operation and maintenance through structural innovation. It comprehensively solves the problem of ice falling from bridge tower crossbeams in freezing rain conditions, ensuring that the impact on bridge shape and normal drainage is minimized. It provides a breakthrough solution for the safe operation and maintenance of long-span bridges. By blocking ice slippage, segmenting ice size, and limiting the size of detachment, it promotes ice melting and prolongs the ice residence time in freezing rain weather to control the hazards of ice falling from bridge tower crossbeams. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the anti-icing device for the surface of the crossbeam of the bridge tower according to this utility model;

[0026] Figure 2 This is a structural schematic diagram of the anti-fall ice clamp of this utility model;

[0027] Figure 3 This is a supplementary structural diagram of the anti-fall ice clamp of this utility model;

[0028] Figure 4 This is a structural schematic diagram of the protruding fixing component of this utility model;

[0029] Figure 5 This is a structural schematic diagram of the protruding fixing member and the extension connecting member of this utility model;

[0030] Figure 6 This is a schematic diagram of the connection method between the protruding fixing member and the extension connector of this utility model;

[0031] Figure 7 This is a schematic diagram of the connection between the anti-icing device of this utility model and the crossbeam of the bridge tower;

[0032] Figure 8 This is a schematic diagram of the anti-ice-fall device of this utility model arranged on the surface of the crossbeam of the suspension bridge tower;

[0033] In the diagram: 1. Anti-fall ice clamp, 2. Protruding fixing piece, 3. Extension connector, 101. Ice baffle, 102. Clamping plate 1, 103. Anti-slip pad, 104. Extension track, 105. Adjustable rack, 106. Rounded corner column head, 107. Weld, 108. Circular arc transition section, 109. Auxiliary limit bar, 201. Fastening ear plate, 202. Gear box, 203. Gear, 204. Rotating handle, 205. Fastening bolt. Detailed Implementation

[0034] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0035] like Figure 1As shown, the anti-icing device for the surface of the crossbeam of the bridge tower of this utility model includes multiple anti-icing devices disposed on the surface of the crossbeam. Each anti-icing device includes an anti-icing clamp 1, multiple protruding fixing members 2, and multiple extension connectors 3. The anti-icing clamp 1 includes a first anti-icing clamp and a second anti-icing clamp, which are respectively fixedly disposed at the edges of the left and right sides of the crossbeam. The first and second anti-icing clamps are connected as a whole by multiple extension connectors 3. The first anti-icing clamp and the extension connector 3, the second anti-icing clamp and the extension connector 3, and adjacent extension connectors 3 are all connected and fixed by protruding fixing members 2.

[0036] In a preferred embodiment of this utility model, the main body of the anti-fall ice clamp 1 is made of Q235 steel, including an ice baffle 101, a clamping plate 102, and an extension rail 104. The end of the anti-fall ice clamp 1 is an ice baffle 101 welded from angle steel, and the ice baffle 101 is welded to the end surface of the extension rail 104 to form a weld 107. To ensure the limiting effect of the ice baffle 101 on the accumulated ice and to avoid damage to the ice baffle 101 due to overload deformation, the ice baffle 101 is welded to the extension rail 104 at a 110° angle; at the same time, the included angle between the left and right sides of the ice baffle 101 is between 90° and 120°, and the total height of the ice baffle 101 is between 5 and 7 cm. To ensure the clamping function of the device on the upper surface of the bridge tower crossbeam, an 8cm high clamping plate 102 is provided at the lower end of the extended track 104. To ensure the reliability and integrity of the clamping plate 102 at the connection, the clamping plate 102 can be formed by stamping the track 104 in one piece. The tip of the clamping plate 102 is slightly tightened inward to maximize the force between the anti-ice clamp 1 and the side surface of the crossbeam during the clamping process. The surface of the clamping plate 102 is also covered with an anti-slip rubber pad 103. The material is high-performance rubber, and the thickness is selected according to the surface roughness and corrosion resistance requirements of the crossbeam. This ensures that the anti-ice clamp 1 fits snugly against the side surface of the crossbeam while also providing shock absorption and resistance to shear deformation when subjected to ice impact.

[0037] In a preferred embodiment of this utility model, the extended track 104 includes a wide track, a wide-to-narrow transition track, and a narrow track, with a total length between 50 and 75 cm. The wide-to-narrow transition track is connected by an arc transition section 108 to avoid stress concentration. The wide track is connected to the ice baffle 101 and the clamping plate 102, primarily serving to fix and clamp the ice and restrict its slippage. Its width is selected within the range of 5 to 7 cm, depending on the bottom edge width of the ice baffle 101 and the clamping plate 102. To minimize material waste and ensure structural strength, the narrow track is approximately 5 to 7 cm wide. The end of the narrow track has a rounded corner post 106 to facilitate smooth passage through the protruding fixing member 2 during assembly. An adjustable rack 105 is provided within 30 to 55 cm of the end of the narrow track, with a tooth height matching the gear 203. The gear box 202 controls the overall extension length of the anti-fall ice clamp 1, achieving the clamping function of the anti-fall ice clamp 1 at the edge of the crossbeam. An auxiliary ice baffle 109 is installed 5-10cm away from the tail end of the adjusting rack 105. The auxiliary ice baffle 109 is vertically installed on both sides of the extension track 104 and is fixed by weld 107. The auxiliary ice baffle 109 is formed by stamping three equilateral closed triangular structures of 15-20cm from steel purlins to expand the ice-blocking area and act as a final collision deceleration line before the ice blocks slide to the edge of the crossbeam. The raised design can help the ice baffle 101 limit the sliding of large-volume ice accumulations, and can also trap large ice blocks by passing through the inside of the ice accumulations during the ice melting process. At the same time, the higher vertical height of the auxiliary ice baffle 109 at the edge of the crossbeam can serve as a warning to workers working on the crossbeam during normal operation and maintenance without affecting the central walking.

[0038] In a preferred embodiment of this utility model, the main body of the protruding fixing member 2 is made of Q235 steel. The protruding fixing member 2 encloses the gear box 202. Fastening ear plates 201 are provided on both the left and right sides of the gear box 202. The fastening ear plates 201 are fixed to the pre-drilled holes on the surface of the crossbeam by fastening bolts 205. The gear box 202 is mounted on the fastening ear plates 201, and two equal-diameter gears 203 are enclosed inside the fastening ear plates 201. The rotation of the gears 203 is controlled externally by a rotation handle 204 outside the gear box 202. A rectangular slot is opened at the bottom of the gear box 202 to expose the gears 203. The tooth spacing of the gears 203 is 5-7 cm to ensure that the adjustable rack 105 of the narrow section of the extended track 104 can mesh and pass through, controlling the overall extension length of the anti-fall ice clamp 1 and realizing the clamping function of the anti-fall ice clamp 1 at the edge of the crossbeam. The two gears 203 in the gearbox 202 are arranged symmetrically on the left and right sides. The plane angle of the anti-fall ice clamp 1 can be adjusted by rotating the gears 203 individually, so as to eliminate the angle error caused by the slender components during the overall assembly, ensure that the anti-fall ice clamp 1 is evenly stressed on the side of the crossbeam, avoid uneven stress that could damage the clamping plate 102, improve the service life of the overall structure, and reduce the secondary internal force impact caused by assembly errors. During the ice melting process, in order to ensure that the protruding fixing part 2 and the recess formed at the bottom of the ice are locked together, the left and right sides of the gearbox 202 are connected by an upper cover, which increases the maximum height of the overall protruding fixing part 2, increases the effective contact height with the groove formed at the bottom of the ice, and also weakens the cross-sectional thickness of the ice as early as possible during the ice melting process.

[0039] In a preferred embodiment of this invention, the ice-prevention clamp 1 and the protruding fixing member 2 are connected by an extension connector 3. For the entire width of the crossbeam, a single ice-prevention device unit is assembled from two ice-prevention clamps 1, n+1 protruding fixing members 2, and n extension connectors 3. The end of the extension connector 3 is welded to the side of the gear box 202. The thickness of the extension connector 3 is the same as the thickness of the side of the gear box 202 and is flush with the highest height of the overall protruding fixing member 2. The lower half is suspended a certain distance above the surface of the crossbeam. In the early stage of ice melting, it can pass through the inside of the ice to hold large pieces of ice tightly. In the middle and later stages of melting, it can form strip-shaped depressions at the bottom of the ice to divide the ice. The connected single ice-prevention device units are arranged at intervals of 2 to 5 meters along the length of the crossbeam. The specific spacing is calculated by back-calculating the impact force of the falling ice based on the height of the crossbeam. This is used to control the size of individual falling ice, ultimately forming a complete array of ice-prevention devices on the upper surface of the crossbeam. Together, they achieve the fixation, division, and eventual melting of large volumes of ice into water that is discharged from the surface of the crossbeam.

[0040] In a preferred embodiment of this invention, the intermittent arrangement device has a small water-blocking area and good water-conducting performance. The anti-ice-fall device is arranged at a certain interval on the upper surface of the crossbeam, and the ice baffle 101 has a small projected area on the side of the crossbeam, which has a weak obstruction to drainage; at the same time, the ice baffle 101 has a certain included angle in both the plane and the vertical plane, so that liquid with a certain initial velocity near the ice baffle 101 is discharged to both sides as soon as possible after encountering the ice baffle 101.

[0041] In a preferred embodiment of this invention, multiple protrusions on the surface of a single anti-ice-fall device unit provide more points of contact with ice. The ice baffle 101 and the protruding fixing member 2 extend above the upper surface of the crossbeam. During the ice melting process, due to the difference in specific heat capacity between the material itself and water, multiple depressions appear at the bottom of the ice during the melting process. These depressions can be locked with the protruding fixing member 2, thus restricting the sliding of ice on the upper surface of the crossbeam at multiple points and improving the overall reliability of the device in ice-fixing.

[0042] In a preferred embodiment of this invention, the anti-ice-fall device array is gridded during the ice-melting process to reduce the mass of a single ice block. Individual anti-ice-fall device units are arranged along the width of the upper surface of the crossbeam, and spaced apart to form an array. Protruding fixing members 2 are arranged at certain intervals on individual anti-ice-fall device units, forming a dense array of dot-like protruding fixing members as the anti-ice-fall device array is arranged. During the ice-melting process, the longitudinally arranged anti-ice-fall devices preferentially form strip-shaped dividing bands on the bottom surface of the ice, and the protruding fixing members 2 form densely packed weak points on the bottom surface of the ice. When the ice melts to the point where it can slide off the upper surface of the crossbeam, it has been essentially divided into small rectangular ice blocks, increasing the number of ice blocks and greatly reducing the mass of a single ice block.

[0043] In a preferred embodiment of this utility model, the modular design adapts to multiple sizes and is suitable for a wide range of applications. The anti-ice clamp 1 can adjust its extension length by rotating the internal gear 203 of the protruding fixing member 2, and the extension connecting member 3 can also be added as needed to achieve adaptive adjustment of the overall structural length. Furthermore, the anti-ice device array formed by individual anti-ice devices can be arranged with adjustable spacing and quantity according to the required coverage length of the application site. Its comprehensive functionality allows it to be used not only on the upper surface of bridge tower crossbeams but also to extend its application to other edgeless flat platforms requiring anti-ice protection.

[0044] In a preferred embodiment of this invention, the structure effectively restricts the sliding of ice on the upper surface of the bridge tower's crossbeams after freezing rain. During the ice melting process, it also provides restraint and separation, significantly reducing the volume and mass of individual ice blocks. The active anti-icing design eliminates the need for workers to perform high-altitude de-icing operations, avoiding the risks associated with such work and potential human-caused structural damage. Simultaneously, relying solely on mechanical components reduces the overall lifecycle maintenance cost, providing a "zero-energy, high-safety" innovative solution for preventing ice from falling onto the bridge tower's crossbeams.

[0045] The anti-icing function of this utility model's anti-icing device on the upper surface of the crossbeam is activated as follows:

[0046] During freezing rain, supercooled rain collides with the surface of the transverse beam. Under the influence of gravity, the water flows down the transverse slope of the transverse beam and leaves the upper surface of the transverse beam. Alternatively, it may encounter an ice baffle 101, and the collision force causes the water flow direction to change along the direction of the ice baffle 101. Guided by the ice baffle 101, the water flow direction is deflected to both sides and discharged from the upper surface of the transverse beam. As the supercooled rain migrates outward from the upper surface of the transverse beam, the supercooled rain that is close to the surface of the transverse beam and decelerated by collisions with the ice baffle 101 at the edge of the transverse beam preferentially condenses into ice. As the duration of the low temperature increases, the ice layer thickness gradually increases, and a continuous, integral ice accumulation gradually forms on the upper surface of the transverse beam.

[0047] As the temperature rises, the ice on the bridge tower surface and the surface of the device melts first, forming a thin water film at the bottom of the ice block, while the ice block still maintains good integrity. At this time, if the surface ice is disturbed by gravity or lateral force of crosswind on the cross slope, it cannot slide off the upper surface of the cross beam under the restriction of the ice baffle 101 on the outside of the cross beam and the auxiliary ice baffle 109. At the same time, the protruding fixing part 2 is locked with the recess at the bottom of the ice block, and the extension connecting part 3 and the auxiliary ice baffle 109 string the ice block together, all of which restrict the overall displacement of the ice block. The melted ice water can only gradually drain out along the bottom of the ice block.

[0048] As ice accumulates on the surface of the device, it melts at a different rate than the upper surface of the crossbeam. This causes the ice to gradually develop a smooth, concave shape that envelops the area around the device. At this point, the ice trapped between the extension connector 3 and the upper surface of the crossbeam melts completely and is discharged as ice water. The ice at the edge of the crossbeam then develops a wavy edge, concave at the ice baffle 101 and convex where the ice baffle 101 is not installed. The concave shape at the bottom of the ice near the protruding fixing member 2 also gradually becomes a smooth arc surface. The ice is now mainly restrained by the lateral force provided by the ice baffle 101 and the protruding fixing member 2, and the fixed ice gradually begins to slide. Due to gravity or external crosswinds, the ice undergoes slight reciprocating motion, colliding and impacting the device multiple times. Due to these impacts, tiny cracks appear inside the ice near the ice baffle 101, the auxiliary ice baffle 109, and the protruding fixing member 2. These cracks continue to develop until they form a continuous crack. As the ice melting process continues, the ice-prevention devices arranged along the entire length preferentially form strip-shaped dividing zones on the bottom surface of the accumulated ice. The lattice formed by the protruding fixing parts 2 is connected by cracks into a rectangular network, and excess ice water is gradually discharged along the cracks and the water film on the surface of the crossbeam.

[0049] During the ice melting process, due to the repeated filling of cracks with ice water and air, the ice in the cracks melts slightly faster than in other parts. As the ice melts and thins, it gradually breaks down into rectangular ice flakes. After the ice completely disperses, it slides on the surface of the crossbeam. When a single rectangular ice flake melts to the point where it can pass through the adjacent ice baffle 101, the first rectangular ice flake at the edge of the crossbeam begins to slide away. Because the rectangular ice flakes lack support at the bottom and have small, non-through cracks inside, they break brittlely under the influence of gravity when they partially slide off the surface of the crossbeam. As the ice flakes gradually slide away from the crossbeam, they gradually break into ice strips. At this point, the size and mass of a single ice strip are greatly reduced compared to the ice on the surface of the untreated crossbeam, and the hazard to traffic safety below is greatly reduced. As the ice subsequently slides down, the rectangular ice sheets change their posture to varying degrees at the start of the slide due to the different release times at different release points. This causes the ice to continuously collide with the protruding fixing part 2 and the extended connecting part 3 as it slides towards the outer surface of the crossbeam, until it collides with the auxiliary ice barrier 109 near the anti-fall ice clamp 1. This dissipates energy step by step, significantly slowing down the speed at which the ice reaches the edge of the crossbeam. This prolongs the time the ice stays on the surface of the crossbeam and also prolongs the process of the ice breaking into ice strips. As the rectangular ice sheets slowly slide away from the surface of the crossbeam, they break into more and smaller ice strips.

[0050] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A fall-preventing ice device for the surface of a bridge tower cross beam, characterized in that, The system includes multiple anti-ice devices installed on the surface of the crossbeam. Each anti-ice device includes an anti-ice clamp, multiple protruding fixing parts, and multiple extension connectors. The anti-ice clamp includes a first anti-ice clamp and a second anti-ice clamp. The first anti-ice clamp and the second anti-ice clamp are respectively fixedly installed at the edges of the left and right sides of the crossbeam. The first anti-ice clamp and the second anti-ice clamp are connected into a whole by the multiple extension connectors. The first anti-fall ice clamp and the extended connector, the second anti-fall ice clamp and the extended connector, and adjacent extended connectors are all connected and fixed to the upper surface of the crossbeam by protruding fasteners.

2. The anti-falling ice device for the surface of the bridge tower transverse beam according to claim 1, characterized in that, The ice-falling clamp includes an ice baffle, an extension rail, a clamping plate, and an auxiliary ice baffle. The ice baffle is made of angle steel and is fixedly installed on the upper surface of the front end of the extension rail. The clamping plate is fixedly installed on the lower surface of the front end of the extension rail and is covered with an anti-slip rubber pad. The elongated track includes a wide section track, a wide-to-narrow transition section track, and a narrow section track. The wide section track is fixedly connected to the clamping plate. The end of the narrow section track is provided with a rounded corner post. Adjustable pitch racks and auxiliary ice barriers are provided on both sides of the narrow section track. There are two auxiliary ice barriers, which are respectively vertically fixed on both sides of the narrow section track. The length of the adjustable pitch rack is 30~55cm and starts from the end of the narrow section track. The auxiliary ice barriers are located 5~10cm away from the end of the adjustable pitch rack.

3. The anti-falling ice device for the surface of the bridge tower transverse beam according to claim 2, characterized in that, The ice baffle forms an angle of 110° to 135° with the extension track, the angle between the left and right sides of the ice baffle is 90° to 120°, the height of the ice baffle is 5 to 7 cm, and the height of the clamping plate is 8 to 10 cm.

4. The anti-falling ice device for the surface of the bridge tower transverse beam according to claim 2, characterized in that, The length of the extended track is 50-75cm, the width of the wide track is 5-7cm, and the width of the narrow track is 3-5cm.

5. The anti-falling ice device for the surface of the bridge tower transverse beam according to claim 2, characterized in that, The auxiliary ice barrier is formed by stamping three equilateral closed triangular structures, each 15-20cm long, from steel purlins.

6. The anti-falling ice device for the surface of the bridge tower transverse beam according to claim 2, characterized in that, The protruding fixing component includes a gear box, with fastening lugs on both the left and right sides of the gear box. Equal-diameter gears are symmetrically arranged on both sides of the gear box. A rotating handle is provided on the top of the gear and passes through the surface of the gear box. The gears are rotated from the outside by rotating the handle. A rectangular slot is opened in the lower part of the gear box to expose the gears. The gear teeth are spaced 5-7 cm apart. Fastening bolts are fixedly installed on the fastening lugs, and the fastening lugs are fixedly connected to the surface of the crossbeam by the fastening bolts.

7. The anti-falling ice device for the surface of the bridge tower transverse beam according to claim 5, characterized in that, The extension connector is elongated and its end is fixedly mounted on the side of the gear box.

8. The anti-falling ice device for the surface of the bridge tower transverse beam according to claim 1, characterized in that, The adjacent anti-fall ice device units are spaced 2 to 5 meters apart.

9. The anti-falling ice device for the surface of the bridge tower transverse beam according to claim 2, characterized in that, The anti-slip pad is made of high-performance rubber.

10. The anti-falling ice device for the surface of the bridge tower transverse beam according to claim 1, characterized in that, The anti-fall ice clamp is made of Q235 steel, and the protruding fixing member is also made of Q235 steel.

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