CN210163782U

CN210163782U - Anti-icing, deicing hot extrusion polyethylene parallel steel wire inhaul cable system

Info

Publication number: CN210163782U
Application number: CN201920387633.0U
Authority: CN
Inventors: 强强; 薛花娟; 赵军
Original assignee: Jiangsu Farsheng Road Bridge Technology Co Ltd; Jiangsu Fasten Steel Cable Co ltd; Fasten Group Co Ltd
Current assignee: Jiangsu Farsheng Road Bridge Technology Co Ltd; Jiangsu Fasten Steel Cable Co ltd; Fasten Group Co Ltd
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2020-03-20
Anticipated expiration: 2029-03-26

Abstract

The utility model relates to an anti-icing, the parallel steel wire cable system of hot extrusion polyethylene of deicing, including the cable, the connecting cylinder, the anchor cup, divide the silk board, lock nut, the connecting cylinder sets up at anchor cup front end, divide the silk board to set up inside the anchor cup, lock nut locks in anchor cup periphery, the cable includes naked rope, the cladding is at the outer sheath of naked rope, naked rope comprises a plurality of heater wires that parallel steel wire bundle and full length set up again, the steel wire bundle of naked rope passes the connecting cylinder and anchors in the anchor cup, the end of steel wire is fixed on dividing the silk board, the inherent a plurality of hollow poling of anchor in the anchor cup, the rear end of poling passes and divides the silk board, the front end extends to the connecting cylinder forward, the heater wire one-to-one of naked rope passes the poling and draws forth from dividing the silk board, the heater wire can be drawn forth in the anchor cup, under the state of heater wire connected power supply drawn forth, the heater wire heating. The heating wires are arranged on the peripheries of the parallel steel wire bundles, and the stay ropes are heated after being electrified, so that the effects of anti-icing and deicing are achieved.

Description

Anti-icing, deicing hot extrusion polyethylene parallel steel wire inhaul cable system

Technical Field

The utility model relates to a cable-stay bridge's cable structure, concretely relates to parallel steel wire cable system that can circular telegram heating.

Background

Along with the development and application of new materials in the modern scientific technology, the construction method is improved and perfected, particularly the rapid development of the computer technology and the finite element analysis method and the breakthrough innovation of the analysis theory, so that the spanning capability of the bridge is stronger and stronger, wherein the large-span bridge represented by a cable-stayed bridge and a suspension bridge system is more like the spring bamboo shoots after raining, and the high-speed development is achieved. The span of the suspension bridge is close to 2000 meters, such as 1624 meters of the main span of the Danish big Bell bridge and 1990 meters of the main span of the Nippon Ming Shi strait bridge. The span of the cable-stayed bridge exceeds 1000 meters, and currently, in the cable-stayed bridge, the span of a multi-roller bridge in Japan is 890 meters, the span of a Sutong Yangtze river bridge is up to 1088 meters, and the main span of a Shantong Yangtze river bridge reaches 1092 meters. The span of the arch bridge also reaches 550 meters. Suspension bridges and cable-stayed bridges transmit loads through a cable system, and half-through arch bridges also need to transmit main loads of main beams through suspenders. The safety of the cable bearing system is directly related to the overall safety of the bridge structure, so that the safety of the cable bearing system of the long-span cable bridge is ensured, the cable bearing system is a key link in the bridge construction process, and the method has great significance. Wind-induced vibration is an important factor threatening the safety of the long-span cable bridge: in freezing weather, the ice coating changes the cross section of the stay cable and the main beam to form unstable aerodynamic appearance and changes the aerodynamic characteristics of the stay cable and the main beam, which may cause flutter, vortex vibration, buffeting, galloping and other wind-induced vibrations of the bridge

In 1 month 2008, the temperature is kept between-5 ℃ and-1 ℃ in the disaster weather, and the temperature in some mountainous areas reaches-7 ℃; the relative humidity is kept above 90%; and the large-scale freezing rain climate causes large-area icing of the electrical equipment along with certain wind power. Different from northern climate, the humidity of the central China is high, rain and snow fall while freezing, and the ice can be immediately adhered to the outer surface of the exposed object without loss, so that a thicker, thicker and solid ice layer is formed. Particularly, in Hunan province, rare ice disasters are encountered. In a cold environment, the stay cable is easy to generate ice coating, and the ice coating makes the gravity center of the stay cable deviate from the central axis to become an unstable aerodynamic shape. In addition, the frozen ice blocks fall off under the vibration effect, so that pedestrians and automobiles are easily injured by crashing, and potential safety hazards are brought to the operation of the bridge.

In order to solve the problems, an anti-icing and deicing hot extrusion polyethylene parallel steel wire inhaul cable system needs to be developed to prevent the stayed cable from icing in a cold environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a take cable system of heater wire is provided to above-mentioned prior art, the heater wire connects the electricity, heats usual cable, produces the effect of anti-icing, deicing.

The utility model provides a technical scheme that above-mentioned problem adopted does: an anti-icing and deicing hot extrusion polyethylene parallel steel wire inhaul cable system comprises inhaul cables, a connecting cylinder, an anchor cup, a wire dividing plate and a locking nut, the connecting cylinder is arranged at the front end of the anchor cup, the wire separating plate is arranged in the anchor cup, the locking nut is locked at the periphery of the anchor cup, the inhaul cable comprises a bare cable and a sheath coated on the outer layer of the bare cable, the bare cable is composed of a parallel steel wire bundle and a plurality of heating wires arranged throughout the length, the steel wire bundle of the bare cable penetrates through the connecting cylinder and is anchored in the anchor cup, the end head of the steel wire is fixed on the wire separating plate, the cable is characterized in that a plurality of hollow through pipes are fixed in the anchor cup in an anchoring mode, the rear ends of the through pipes penetrate through the wire dividing plate, the front ends of the through pipes extend forwards to the connecting cylinder, heating wires of bare cables penetrate through the through pipes in a one-to-one correspondence mode and are led out from the wire dividing plate, the heating wires can be led out from the anchor cup, and the heating wires generate heat to heat the cables in the state that the led heating wires are connected with a power supply.

The temporary wire baffle is arranged in the anchor cup, and the heating wire passing through the wire separating plate is stopped in the anchor cup by the wire baffle, so that the exposed heating wire is prevented from being damaged by field stay cable installation operation.

Preferably, a plurality of heating wires are uniformly distributed on the periphery of the steel wire bundle, and the heating wires and the outer layer steel wires are positioned on the same circumference, so that the heating wires are not easy to protrude outwards and slide. The advantage of this arrangement is that it avoids the heating wire from interfering with the wire bundle and facilitates the replacement of the heating wire and the anchoring operation of the wire bundle.

Specifically, the heating wire comprises a power bus, an inner insulating sleeve, a heating wire, an outer insulating sleeve, a heat conducting layer and a heating layer from inside to outside in sequence, wherein the heating wire is wound on the inner insulating sleeve in a full-length mode, the heating wire and the power bus are connected at intervals, and a continuous and parallel-connection electrified heating section is formed. The power bus can be two or three parallel insulated copper stranded wires to adapt to different power sockets, and after the bus is electrified, each parallel resistor generates heat to form a continuous heating wire.

Preferably, the bare cable is wound on the winding belt, the sheath is arranged on the outer layer of the winding belt, and the sheath is a single-layer or multi-layer hot-extrusion polyethylene layer.

The preparation method of the anti-icing and deicing hot extrusion polyethylene parallel steel wire inhaul cable system mainly comprises the following steps

(1) Preparing a steel wire and a heating wire according to the specification of the inhaul cable, discharging the steel wire, arranging the heating wire on the outer layer of the steel wire bundle in the wire discharging process, wherein the heating wire is uniformly distributed on the outer layer of the steel wire bundle, when the heating wire is arranged, the heating wire is arranged in the circumference where the steel wire on the outer layer is located and is tightly arranged with the steel wire, and lengths are reserved at two ends of the heating wire respectively;

(2) winding and wrapping bands at the periphery of the formed bare cable for shaping, arranging protective sleeves at two ends of the bare cable, and filling the reserved heating wire and two ends of the steel wire bundle into the protective sleeves together, wherein the reserved heating wire can be further wound and wrapped by adopting the wrapping bands or waterproof bands; then, hot extruding a polyethylene sheath on the surface of the shaped bare cable, wherein the polyethylene sheath is a single layer or a plurality of layers, and the polyethylene sheath also wraps the protective sleeve;

(3) before the stay cable is blanked, the polyethylene sheaths at two ends are stripped, the protecting sleeves are dismounted, the heating wire and the end steel wire bundles are exposed, the heating wire is reversely pulled backwards and temporarily fixed on the stay cable body, the anchoring interference on the end steel wires is eliminated, and the steel wire bundles are carded;

(4) preparing a connecting cylinder, an anchor cup and a wire dividing plate, connecting the connecting cylinder with the anchor cup, arranging the wire dividing plate into the anchor cup, enabling steel wires to penetrate through wire dividing holes in the connecting cylinder, the anchor cup and the wire dividing plate one by one, reducing redundant steel wires, upsetting the steel wires, taking hollow penetrating pipes after all the steel wires are threaded, enabling the penetrating pipes to penetrate through the wire dividing plate, the anchor cup and the connecting cylinder one by one, enabling the rear ends of the penetrating pipes to flow out of the wire dividing plate, enabling the front ends of the penetrating pipes to be exposed out of the connecting cylinder, and enabling the number and distribution of the penetrating pipes to be matched with the number and distribution of heating wires;

(5) pouring an anchoring material into the anchor cup for anchoring, penetrating the heating wires through the through pipes in a one-to-one correspondence mode after anchoring is finished, and completely drawing the reserved heating wires out of the wire splitting plate;

(6) then temporarily arranging a wire baffle plate outside the wire separating plate, wherein the wire baffle plate isolates the reserved heating wire within the tensioning thread of the anchor cup to prevent the heating wire from being damaged during tensioning;

(7) after the inhaul cable is installed and tensioned on site, the wire baffle is detached, the heating wire is led out from the anchor cup and connected to the power supply, and under the condition of electrification, the heating wire generates heat to heat the surface temperature of the inhaul cable, so that the purposes of deicing and anti-icing are achieved.

Preferably, an outer temperature sensor is arranged on a sheath of the inhaul cable, an inner temperature sensor is arranged on the surface of the bare cable, and the temperatures of the surface of the inhaul cable and the surface of the bare cable are respectively monitored to prevent overheating.

Preferably, an explosion-proof temperature controller is installed at a power end to avoid causing a fire.

Preferably, the poling is hollow stainless steel pipe, and the wall thickness of poling is 0.2 ~ 0.5mm, and the poling exposes the length of dividing the silk board and is 2 +/-1 cm, exposes the length of connecting cylinder and is 5 +/-1 cm, is favorable to the poling operation of heater wire, effectively prevents heater wire and scatter.

Preferably, in the step (2), the heating wires reserved at the two ends of the bare cable are wound by a winding belt so as not to be exposed, and the heating wires are protected.

Compared with the prior art, the utility model has the advantages of: the hot extrusion polyethylene parallel steel wire inhaul cable system for preventing icing and deicing has the advantages that the heating wires are arranged on the peripheries of the parallel steel wire bundles, and the inhaul cable is heated after the heating wires are electrified, so that the effects of preventing icing and deicing are achieved.

Drawings

Fig. 1 is a schematic structural diagram of a guy cable system according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the stay system of the embodiment of the present invention after being installed as a stay cable;

FIG. 3 is a schematic structural view of a dual core heater wire according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a three-core heater wire according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a bare cord of 3 heater wires;

FIG. 6 is a cross-sectional view of a bare cord of 6 heater wires;

FIG. 7 is a cross-sectional view of a bare cord of 12 heater wires;

FIG. 8 is a schematic structural view of the cable body before anchoring;

FIG. 9 is a schematic structural view of the anchor cup before the anchor cup is filled with the anchor;

FIG. 10 is a schematic structural view of the anchor cup after being filled with the anchor;

FIG. 11 is a schematic view of the side of the filament plate after anchor grouting;

FIG. 12 is a schematic structural view of a wire baffle installed in the anchor cup before tensioning;

fig. 13 is a schematic structural view of the heater wire being led out and energized after the stay cable is erected.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Example 1

As shown in fig. 1-7, the embodiment relates to an anti-icing and deicing hot extrusion polyethylene parallel steel wire cable system, which comprises a cable, a connecting cylinder 2, an anchor cup 1, a wire dividing plate 7 and a locking nut 8, wherein the connecting cylinder 3 is arranged at the front end of the anchor cup 1, the connecting cylinder is hermetically connected with the surface of the cable through a retaining ring, the wire dividing plate 7 is arranged inside the anchor cup 1, the locking nut 8 is locked at the periphery of the anchor cup 1, the cable comprises a bare cable and a single-layer or double-layer polyethylene sheath 9 coated on the outer layer of the bare cable, the bare cable is composed of a parallel steel wire bundle 5 and a plurality of heating wires 4 arranged at the same length, the plurality of heating wires are uniformly distributed at the periphery of the steel wire bundle, the heating wires and an outer layer steel wire are positioned at the same circumference, and a winding. The heating wires are installed when the steel wires are unwound, 3/6/12 heating wires are generally uniformly arranged on the outer layer coil circumference of the steel wire bundle, specifically according to the specification of the inhaul cable, and refer to fig. 5-7.

The steel wire bundle of the bare cable penetrates through the connecting cylinder 2 and is anchored in the anchor cup 1, the end head of the steel wire is fixed on the wire dividing plate after being abutted against the head, the steel wire bundle in the anchor cup is in a conical scattering shape, a plurality of hollow through pipes 3 are anchored in the anchor cup 1, the rear ends of the through pipes 3 penetrate through the wire dividing plate 7, the front ends of the through pipes extend forwards out of the connecting cylinder 2, the heating wires of the bare cable penetrate through the through pipes 3 from front to back in a one-to-one correspondence mode and are led out from the wire dividing plate 7, the wire blocking plate 6 is temporarily installed in the anchor cup 1 before the site installation of the stay cable, and the heating wires extending out of the wire dividing plate are hidden in the anchor cup 1 by the wire blocking plate 6 so as not to. After the stay cable is installed on site, the wire baffle 6 is removed, the heating wire 4 is led out from the anchor cup 1, and the heating wire can realize heating and integral heating of the stay cable under the condition that the led heating wire is connected with a power supply.

The pipe penetrating 3 is a hollow stainless steel pipe, the wall thickness of the pipe penetrating is 0.2-0.5 mm, the length of the pipe penetrating exposing the wire separating plate is 2 +/-1 cm, and the length of the pipe penetrating exposing the connecting cylinder is 5 +/-1 cm.

The heating wire comprises a power supply bus (comprising a power supply core wire 401 and a core wire insulating layer 401'), an inner insulating sleeve 402, a heating wire 403, an outer insulating sleeve 404, a heat conducting layer (woven layer) 405 and a heating layer 406 from inside to outside in sequence, wherein the heating wire 403 is wound on the inner insulating sleeve 402 in a full length mode, and the heating wire 403 and the power supply bus 401 are connected at intervals to form a continuous and parallel-connected electrifying heating section. The power core wire can be double-core or triple-core. The electric heating wire can be cut at will according to actual need length on site, and weaving layer 405 plays the heat conduction effect to help improving the intensity of electric heating wire, can also be used as safe earth connection simultaneously.

Example 2

Referring to fig. 8-13, this embodiment is to disclose a method for preparing a cable system according to embodiment 1, taking a cable with 6 heating wires as an example, and the steps are as follows

1. Preparing a steel wire bundle and six heating wires, discharging the steel wires, wherein the section of the steel wire bundle is in a regular hexagon shape, the heating wires are arranged on the outer layer of the steel wire bundle in the wire discharging process, the six heating wires are uniformly arranged on the outer ring of the steel wire bundle, when the heating wires are arranged, the heating wires and the outer layer steel wires are arranged side by side and are tightly arranged with the steel wires, and enough length is reserved at both ends of the heating wires;

2. winding a winding belt around the molded bare cable for shaping, mounting a temperature sensor on the surface of the bare cable in the winding process, carding the reserved heating wires at two ends into a cluster and tightly wrapping the cluster with the winding belt, arranging metal protective sleeves at two ends of the bare cable, and inserting the reserved heating wires and two ends of a steel wire bundle into the protective sleeves; then, hot extruding a high-density polyethylene sheath on the surface of the shaped bare cable, wherein the high-density polyethylene sheath is divided into two layers, and the polyethylene sheath covers the protective sleeve;

3. before the stay cable is blanked, the polyethylene sheaths at two ends are firstly stripped, the protective sleeve is dismounted, the wrapping belt on the heating wire is stripped, the heating wire and the end part steel wire bundle are exposed, the heating wire is reversely pulled backwards and is temporarily fixed on the stay cable body, referring to fig. 9, the interference of the heating wire on the end part steel wire is prevented, and then the end part steel wire bundle is combed to scatter the parallel steel wires;

4. preparing a connecting cylinder, an anchor cup, a wire dividing plate and a wire baffle plate, connecting the connecting cylinder with the anchor cup, arranging the wire dividing plate into the anchor cup, enabling steel wires to penetrate through wire dividing holes in the connecting cylinder, the anchor cup and the wire dividing plate one by one, reducing redundant steel wires, fixing a steel wire pier head on the wire dividing plate, taking six hollow penetrating pipes after all the steel wires are penetrated, enabling the penetrating pipes to penetrate through the wire dividing plate, the anchor cup and the connecting cylinder one by one, enabling the rear ends of the penetrating pipes to flow out of the wire dividing plate and the front ends of the penetrating pipes to be exposed out of the connecting cylinder, and enabling the distribution positions of the penetrating pipes to be matched with the distribution positions of heating wires on a steel wire bundle;

5. pouring an anchoring material into the anchor cup for anchoring, penetrating the heating wires through the through pipes in a one-to-one correspondence mode after anchoring is finished, and completely drawing the reserved heating wires out of the wire splitting plate;

6. then temporarily arranging a wire baffle plate outside the wire separating plate, wherein the wire baffle plate isolates the reserved heating wire within the tensioning thread on the anchor cup to prevent the heating wire from being damaged during tensioning;

7. the method comprises the steps of conveying a stay cable to a construction site, installing a stay cable, arranging a temperature sensor on a polyethylene sheath of the stay cable, detaching a wire baffle plate after the stay cable is installed and tensioned on the site, leading a heating wire out of an anchor cup and connecting the heating wire to a power supply, installing an explosion-proof temperature controller at a power supply end, and heating the stay cable normally by electrifying and heating the heating wire so as to achieve the purposes of deicing and anti-icing.

In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. The utility model provides an anti-icing, parallel steel wire cable system of crowded polyethylene of heat of deicing, includes cable, connecting cylinder, anchor cup, divides silk board, lock nut, the connecting cylinder sets up at anchor cup front end, divide the silk board setting inside the anchor cup, lock nut locks in anchor cup periphery, its characterized in that: the inhaul cable comprises a bare cable and a sheath coated on the outer layer of the bare cable, the bare cable is composed of a steel wire bundle and a plurality of heating wires arranged through the steel wire bundle in parallel, the steel wire bundle of the bare cable penetrates through the connecting cylinder and is anchored in the anchor cup, the end head of the steel wire is fixed on the wire dividing plate, a plurality of hollow penetrating pipes are anchored in the anchor cup, the rear ends of the penetrating pipes penetrate through the wire dividing plate, the front ends of the penetrating pipes extend forwards to the connecting cylinder, the heating wires of the bare cable penetrate through the penetrating pipes in a one-to-one correspondence mode and are led out from the wire dividing plate, the heating wires can be led out from the anchor cup, and the heating wires heat the inhaul cable under the condition that the led heating wires.

2. The anti-icing and de-icing hot-extruded polyethylene parallel wire cable system according to claim 1, characterized in that: a temporary wire baffle is arranged in the anchor cup, and the heating wire passing through the wire separating plate is stopped in the anchor cup by the wire baffle.

3. The anti-icing and de-icing hot-extruded polyethylene parallel wire cable system according to claim 1, characterized in that: the heating wires are uniformly distributed on the periphery of the steel wire bundle, and the heating wires and the outer layer steel wire are positioned on the same circumference.

4. The anti-icing and de-icing hot-extruded polyethylene parallel wire cable system according to claim 1, characterized in that: the heating wire comprises a power bus, an inner insulation sleeve, a heating wire, an outer insulation sleeve, a heat conduction layer and a heating layer from inside to outside in sequence, wherein the heating wire is wound on the inner insulation sleeve in a full length mode, the heating wire is connected with the power bus at intervals, and a continuous and parallel connection power-on heating section is formed.

5. The anti-icing and de-icing hot-extruded polyethylene parallel wire cable system according to claim 1, characterized in that: the bare cable is wound on the winding belt, the sheath is arranged on the outer layer of the winding belt, and the sheath is a single-layer or multi-layer hot-extruded polyethylene layer.