A heating cable and steel bundle composite cable bridge anti-icing device

Abstract

The present invention is a heating cable and steel bundle composite cable bridge anti-icing device, comprising a cable main body component and a composite continuous heating T-cable arranged inside the cable main body component, and a damping component is arranged between the composite continuous heating T-cable and the cable main body component. The present invention innovatively combines the composite continuous heating T-cable with the steel strand to form the cable main body component, achieving the effect of preventing the cable main body component from freezing and icing. After the composite continuous heating T-cable is combined with the steel strand, it has the same expansion and contraction and damping characteristics, and will not affect the actual application effect of the steel strand.

Description

Technical Field

[0001] The invention relates to the technical field of deicing of cable-stayed bridges, and in particular to an anti-icing device for cable-stayed bridges of a composite type of heating cables and steel bundles. Background Art

[0002] Cable-stayed bridges have the advantages of large span capacity and beautiful appearance, and are one of the main types of long-span bridges in my country's transportation system. Among them, the cable is the main load-bearing and force-transmitting component of the cable-stayed bridge, located above the bridge deck.

[0003] During the operation of cable-stayed bridges, the (freezing) rain, snow, ice and other phenomena caused by climate reasons in central and northern my country are likely to cause major hidden dangers to the structure and traffic safety of the bridge. For cable-stayed cables, some rain and snow will remain on the cables after rain and snow, and will freeze when the temperature is below 0℃. The ice condensed on the cables will be affected by external factors such as rising temperatures, wind or normal vibration of the cables, causing ice to fall from the cables. When ice falls from a higher position, it will cause major safety hazards to vehicles driving normally on the bridge deck due to its high speed. In serious cases, it may even cause a series of traffic accidents, causing major personal and property losses.

[0004] In addition, snow and ice accumulation on the cable-stayed cables will change the cross-sectional shape of the cables, thereby changing their aerodynamic characteristics and the wind-induced vibration response of the bridge, threatening the safety of the bridge structure.

[0005] The current approach to dealing with danger is to prohibit passage or issue warnings, but there are still great safety hazards. There is currently no particularly effective solution to prevent the cables from freezing, and this is a global problem. Summary of the invention

[0006] The present invention aims to solve the deficiencies of the prior art and provides an anti-icing device for a cable bridge of a composite type of heating cable and steel bundle.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A heating cable and steel bundle composite cable bridge anti-icing device comprises a cable main body component and a composite continuous heating T-cable arranged inside the cable main body component, wherein a damping component is arranged between the composite continuous heating T-cable and the cable main body component.

[0009] The main component of the inclined cable comprises an outer sleeve of the inclined cable and a plurality of steel strands evenly arranged inside the outer sleeve of the inclined cable, the composite continuous heating T-cable is inserted in the center of the steel strand, one end of the outer sleeve of the inclined cable is provided with a closed anchor connected to the bridge deck, an anchor plate is provided in the anchor, and the anchor plate is provided with steel strand holes for the steel strands to pass through and a center hole for the composite continuous heating T-cable to pass through, the steel strand and the composite continuous heating T-cable are passed through the anchor plate, and the composite continuous heating T-cable passes through the outer end of the anchor.

[0010] In particular, the damping component is arranged outside the anchor, and the damping component includes a damper shell fixed at the outer end of the anchor, the composite continuous heating T-cable passes through the damper shell, and a first damping sleeve is provided between the outer wall of the composite continuous heating T-cable and the outer end surface of the damper shell, the first damping sleeve is fixed on the outer wall of the composite continuous heating T-cable, and the inner end surface of the first damping sleeve is connected to the first damping spring, and the other end of the first damping spring is in contact with the outer end surface of the anchor.

[0011] In particular, the damping component is arranged inside the anchor, and the damping component includes an inner baffle plate and a mounting plate fixed on the inner wall of the anchor, the composite continuous heating T-cable passes through the inner baffle plate and the mounting plate in sequence and passes out of the anchor, a second damping sleeve is provided between the outer wall of the composite continuous heating T-cable and the mounting plate, the second damping sleeve is fixed on the outer wall of the composite continuous heating T-cable, the inner end surface of the second damping sleeve is connected to a second damping spring, and the other end of the second damping spring is in contact with the inner baffle plate.

[0012] The composite continuous heating T-cable includes a heating cable body part and a tail end connection part, the heating cable body part is connected to the tail end connection part, the heating cable body part includes a core wire, an insulating layer, a filling layer and a heating steel armor layer are sequentially arranged outside the core wire, the core wire and the heating steel armor layer are connected through the tail end connection part, the thickness of the heating steel armor layer is greater than the skin depth of the return current, and the return current is the current that the forward current returns to the heating steel armor layer after passing through the core wire and the tail end connection part.

[0013] A protective sleeve is inserted between the steel strand and the steel strand hole of the anchor plate. The protective sleeve is fixed on the outer wall of the steel strand and is located on a side close to the damping component.

[0014] The protective sleeve is a truncated cone structure with one end being wide and the other end being narrow. The end of the protective sleeve close to the damping component has a larger diameter, and the end of the protective sleeve inserted into the steel strand hole has a smaller diameter.

[0015] The beneficial effects of the present invention are as follows: the present invention innovatively combines the composite continuous heating T-cable with the steel strand to form the main component of the inclined cable, thereby achieving the effect of preventing the main component of the inclined cable from freezing. After the composite continuous heating T-cable is combined with the steel strand, it has the same expansion and contraction and damping characteristics, and will not affect the actual application effect of the steel strand. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the anchor plate inside the anchor of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the composite continuous heating T cable;

[0019] Figure 4 It is a schematic diagram of the structure in which the damping component is arranged outside the anchor;

[0020] Figure 5 It is a schematic diagram of the structure in which the damping component is arranged inside the anchor;

[0021] In the figure: 1-main part of the inclined cable; 2-composite continuous heating T cable; 3-damping component; 4-outer sleeve of the inclined cable; 5-steel strand; 6-anchor; 7-anchor plate; 8-steel strand hole; 9-center hole; 10-damper housing; 11-first damping sleeve; 12-first damping spring; 13-inner baffle; 14-mounting plate; 15-second damping sleeve; 16-second damping spring; 17-core wire; 18-insulating layer; 19-filling layer; 20-heating steel armor layer; 21-tail end connection part; 22-protective sleeve;

[0022] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0024] like Figures 1 to 3 As shown, a heating cable and steel bundle composite cable-stayed bridge anti-icing device includes a cable main body component 1 and a composite continuous heating T-cable 2 arranged inside the cable main body component 1, and a damping component 3 is provided between the composite continuous heating T-cable 2 and the cable main body component 1.

[0025] The main component 1 of the inclined cable comprises an outer sleeve 4 for the inclined cable and a plurality of steel strands 5 evenly arranged inside the outer sleeve 4 for the inclined cable. The composite continuous heating T-cable 2 is inserted in the center of the steel strand 5. One end of the outer sleeve 4 for the inclined cable is provided with a closed anchor 6 connected to the bridge deck. An anchor plate 7 is provided in the anchor 6. The anchor plate 7 is provided with steel strand holes 8 for the steel strand 5 to pass through and a center hole 9 for the composite continuous heating T-cable 2 to pass through. The steel strand 5 and the composite continuous heating T-cable 2 are passed through the anchor plate 7, and the composite continuous heating T-cable 2 passes through the outer end of the anchor 6.

[0026] The damping component 3 can be in two forms, as follows:

[0027] In particular, such as Figure 1 or Figure 4 As shown, the damping component 3 is arranged outside the anchor 6, and the damping component 3 includes a damper shell 10 fixed to the outer end of the anchor 6, the composite continuous heating T cable 2 passes through the damper shell 10, and a first damping sleeve 11 is provided between the outer wall of the composite continuous heating T cable 2 and the outer end surface of the damper shell 10, the first damping sleeve 11 is fixed on the outer wall of the composite continuous heating T cable 2, and the inner end surface of the first damping sleeve 11 is connected to the first damping spring 12, and the other end of the first damping spring 12 is in contact with the outer end surface of the anchor 6.

[0028] In particular, such as Figure 5 As shown, the damping component 3 is arranged inside the anchor 6, and the damping component 3 includes an inner baffle 13 and a mounting plate 14 fixed on the inner wall of the anchor 6. The composite continuous heating T-cable 2 passes through the inner baffle 13 and the mounting plate 14 in sequence and passes out of the anchor 6. A second damping sleeve 15 is provided between the outer wall of the composite continuous heating T-cable 2 and the mounting plate 14. The second damping sleeve 15 is fixed on the outer wall of the composite continuous heating T-cable 2. The inner end surface of the second damping sleeve 15 is connected to a second damping spring 16, and the other end of the second damping spring 16 abuts against the inner baffle 13.

[0029] Figure 4 and Figure 5 Two different solutions are represented, one is located outside the anchor 6 and the other is located inside the anchor 6.

[0030] The composite continuous heating T-cable 2 includes a heating cable body and a tail end connection part 21, the heating cable body is connected to the tail end connection part 21, the heating cable body includes a core wire 17, an insulating layer 18, a filling layer 19 and a heating steel armor layer 20 are sequentially arranged outside the core wire 17, the core wire 17 is connected to the heating steel armor layer 20 through the tail end connection part 21, the thickness of the heating steel armor layer 20 is greater than the skin depth of the return current, and the return current is the current that the forward current returns to the heating steel armor layer 20 after passing through the core wire 17 and the tail end connection part 21.

[0031] A protective sleeve 22 is inserted between the steel strand 5 and the steel strand hole 8 of the anchor plate 7 . The protective sleeve 22 is fixed on the outer wall of the steel strand 5 . The protective sleeve 22 is located on a side close to the damping component 3 .

[0032] The protective cover 22 is a truncated cone structure with one end being wide and the other end being narrow. The end of the protective cover 22 close to the damping component 3 has a larger diameter, and the end of the protective cover 22 inserted into the steel strand hole 8 has a smaller diameter.

[0033] One end of the composite continuous heating T-cable 2 is connected to the power supply end, and the other end connects the core wire 17 with the heating steel armor layer 20 through the tail end connection part 21. The current in the core wire 17 returns to the heating steel armor layer 20 through the tail end connection part 5, and the heating steel armor layer 20 uses the principles of skin effect and proximity effect to make the surface of the heating steel armor layer 20 physically insulated. The specific principles are: skin effect, the current flows in the core wire 17, and the skin passes on the surface of the core wire 17; proximity effect, the return current in the heating steel armor layer 20 and the current on the surface of the core wire 17 attract each other, so that the return current is concentrated on the inner surface of the heating steel armor layer 20, thus forming physical insulation on the outer surface of the heating steel armor layer 20. The composite continuous heating T-cable 2 uses advanced electric induction technology to efficiently convert electrical energy into thermal energy through the heating steel armor layer 20, and the heating effect is good. The composite continuous heating T-cable 2 can be up to 25km long and the highest temperature is 150°C. It has been widely used in many fields such as petroleum and chemical industry.

[0034] The present invention innovatively combines the composite continuous heating T-cable 2 with the steel strand 5 to form the main component 1 of the inclined cable, and utilizes the heating effect of the composite continuous heating T-cable 2 to achieve the effect of anti-freezing and non-icing of the main component 1 of the inclined cable. The composite continuous heating T-cable 2 is installed in the main component 1 of the inclined cable and is not subjected to force. The length is longer than the steel strand 5. Under the heating effect of the damping component 3, when the steel strand 5 is stretched and contracted under force, the first damping sleeve 11 and the second damping sleeve 15 in the damping component 3 can slide frictionally, and the first damping spring 12 and the second damping spring 16 play a damping role to meet the activity of the composite continuous heating T-cable 2. After the composite continuous heating T-cable 2 is combined with the steel strand 5, it has the characteristics of the same expansion and contraction and the same damping, and will not affect the actual application effect of the steel strand.

[0035] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A heating cable and steel bundle composite cable bridge anti-icing device, characterized in that: It comprises a stay cable main body component (1) and a composite continuous heating T-cable (2) arranged inside the stay cable main body component (1), wherein a damping component (3) is provided between the composite continuous heating T-cable (2) and the stay cable main body component (1); The main component (1) of the inclined cable comprises an outer sleeve (4) of the inclined cable and a plurality of steel strands (5) uniformly arranged inside the outer sleeve (4) of the inclined cable, the composite continuous heating T-cable (2) being inserted in the center of the steel strand (5), one end of the outer sleeve (4) of the inclined cable being provided with a closed anchor (6) connected to the bridge deck, an anchor plate (7) being provided inside the anchor (6), the anchor plate (7) being provided with steel strand holes (8) for the steel strands (5) to pass through and a center hole (9) for the composite continuous heating T-cable (2) to pass through, the steel strands (5) and the composite continuous heating T-cable (2) being passed through the anchor plate (7), and the composite continuous heating T-cable (2) passing through the outer end of the anchor (6); The damping component (3) is arranged outside the anchor (6), and the damping component (3) includes a damper shell (10) fixed to the outer end of the anchor (6); the composite continuous heating T-cable (2) passes through the damper shell (10); a first damping sleeve (11) is provided between the outer wall of the composite continuous heating T-cable (2) and the outer end surface of the damper shell (10); the first damping sleeve (11) is fixed to the outer wall of the composite continuous heating T-cable (2); the inner end surface of the first damping sleeve (11) is connected to a first damping spring (12); the other end of the first damping spring (12) abuts against the outer end surface of the anchor (6); The composite continuous heating T-cable (2) comprises a heating cable body and a tail end connection part (21), wherein the heating cable body is connected to the tail end connection part (21), wherein the heating cable body comprises a core wire (17), wherein an insulating layer (18), a filling layer (19) and a heating steel armor layer (20) are sequentially arranged outside the core wire (17), wherein the core wire (17) and the heating steel armor layer (20) are connected via the tail end connection part (21), wherein the thickness of the heating steel armor layer (20) is greater than the skin depth of a return current, wherein the return current is a current that returns to the heating steel armor layer (20) after a forward current passes through the core wire (17) and the tail end connection part (21).

2. A heating cable and steel bundle composite cable bridge anti-icing device, characterized in that: It comprises a stay cable main body component (1) and a composite continuous heating T-cable (2) arranged inside the stay cable main body component (1), wherein a damping component (3) is provided between the composite continuous heating T-cable (2) and the stay cable main body component (1); The main component (1) of the inclined cable comprises an outer sleeve (4) of the inclined cable and a plurality of steel strands (5) uniformly arranged inside the outer sleeve (4) of the inclined cable, the composite continuous heating T-cable (2) being inserted in the center of the steel strand (5), one end of the outer sleeve (4) of the inclined cable being provided with a closed anchor (6) connected to the bridge deck, an anchor plate (7) being provided inside the anchor (6), the anchor plate (7) being provided with steel strand holes (8) for the steel strands (5) to pass through and a center hole (9) for the composite continuous heating T-cable (2) to pass through, the steel strands (5) and the composite continuous heating T-cable (2) being passed through the anchor plate (7), and the composite continuous heating T-cable (2) passing through the outer end of the anchor (6); The damping component (3) is arranged inside the anchor (6), and the damping component (3) comprises an inner baffle (13) and a mounting plate (14) fixed on the inner wall of the anchor (6); the composite continuous heating T-cable (2) passes through the inner baffle (13) and the mounting plate (14) in sequence and passes out of the anchor (6); a second damping sleeve (15) is provided between the outer wall of the composite continuous heating T-cable (2) and the mounting plate (14); the second damping sleeve (15) is fixed on the outer wall of the composite continuous heating T-cable (2); a second damping spring (16) is connected to the inner end surface of the second damping sleeve (15); the other end of the second damping spring (16) abuts against the inner baffle (13); The composite continuous heating T-cable (2) comprises a heating cable body and a tail end connection part (21), wherein the heating cable body is connected to the tail end connection part (21), wherein the heating cable body comprises a core wire (17), wherein an insulating layer (18), a filling layer (19) and a heating steel armor layer (20) are sequentially arranged outside the core wire (17), wherein the core wire (17) and the heating steel armor layer (20) are connected via the tail end connection part (21), wherein the thickness of the heating steel armor layer (20) is greater than the skin depth of a return current, wherein the return current is a current that returns to the heating steel armor layer (20) after a forward current passes through the core wire (17) and the tail end connection part (21).

3. The anti-icing device of a heating cable and steel bundle composite cable bridge according to claim 1 or 2, characterized in that: A protective sleeve (22) is inserted between the steel strand (5) and the steel strand hole (8) of the anchor plate (7); the protective sleeve (22) is fixed on the outer wall of the steel strand (5); and the protective sleeve (22) is located on a side close to the damping component (3).

4. The anti-icing device of a heating cable and steel bundle composite cable bridge according to claim 3 is characterized in that: The protective sleeve (22) is a truncated cone structure with one end being wide and the other end being narrow; the end of the protective sleeve (22) close to the damping component (3) has a larger diameter, and the end of the protective sleeve (22) inserted into the steel strand hole (8) has a smaller diameter.

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