阅读说明：本技术 填充保护气体的桥梁拉索及其制造方法 (Bridge inhaul cable filled with protective gas and manufacturing method thereof ) 是由 张海良 俞建群 顾庆华 何旭初 黄冬芳 斯晓青 金芳 于 2018-05-31 设计创作，主要内容包括：本发明涉及桥梁零件的悬索领域,具体为一种填充保护气体的桥梁拉索及其制造方法。一种填充保护气体的桥梁拉索,包括索股(1)、锚杯(2)和保护层(3),其特征是：还包括气罩(51)、快速接头(6)、充气管(7)、温度-湿度计(81)和气压表(82),在索股(1)两端靠近锚杯(2)处分别切除部分保护层(3)作为充气口(41)和检测口(42),在充气口(41)和检测口(42)外都套上气罩(51),通过气罩(51)向索股(1)内充入保护气。一种填充保护气体的桥梁拉索的制造方法,其特征是：按如下步骤依次实施：①切除；②套气罩；③充气。本发明结构简单,操作便捷,安全环保。(the invention relates to the field of suspension cables of bridge parts, in particular to a bridge inhaul cable filled with protective gas and a manufacturing method thereof. The utility model provides a fill protective gas's bridge cable, includes strand (1), anchor cup (2) and protective layer (3), characterized by: still include gas hood (51), quick-operation joint (6), gas tube (7), temperature-hygrometer (81) and barometer (82), be close to anchor cup (2) punishment at strand (1) both ends and excise partial protective layer (3) respectively and regard as inflation inlet (41) and detection mouth (42), all sheathe in gas hood (51) outside inflation inlet (41) and detection mouth (42), fill into the protection gas in to strand (1) through gas hood (51). A manufacturing method of a bridge inhaul cable filled with protective gas is characterized in that: the method is implemented in sequence according to the following steps: cutting off; covering a gas hood; and thirdly, inflating. The invention has simple structure, convenient operation, safety and environmental protection.)

1. The utility model provides a fill protective gas's bridge cable, includes strand (1), anchor cup (2) and protective layer (3), and strand (1) comprises the steel wire, and anchor cup (2) are respectively fixed at the both ends of strand (1), and protective layer (3), characterized by are covered in the lateral surface facing of strand (1): also comprises an air hood (51), a quick joint (6), an inflation tube (7), a temperature-humidity meter (81) and an air pressure meter (82),

The two ends of the strand (1) close to the anchor cup (2) are respectively cut off partial protective layers (3), so that the strand (1) in the area where the protective layers (3) are cut off is exposed, the two areas where the protective layers (3) are cut off are respectively used as an air charging port (41) and a detection port (42), the air cover (51) is sleeved outside the inflation inlet (41) and the detection inlet (42), the air cover (51) respectively and completely seals the inflation inlet (41) and the detection inlet (42), and gas hood (51) hoop is outside protective layer (3), be equipped with observation window (52) on gas hood (51), gas hood (51) external clamp worm (53) are fixed, gas hood (51) of inflation inlet (41) department passes through quick-operation joint (6) and connects gas tube (7), gas hood (51) of detection mouth (42) department pass through quick-operation joint (6) and connect temperature-hygrometer (81) and barometer (82) respectively, aerify the protection gas in to strand (1) through gas hood (51).

2. a bridge bracing cable filled with protective gas according to claim 1, wherein: the snail clamp (53) is formed by splicing an upper clamp (531) and a lower clamp (532), the upper clamp (531) and the lower clamp (532) are both in a semicircular shape, the upper clamp (531) and the lower clamp (532) are oppositely spliced in an opening way and hoop an air hood (51) in the spliced ring, and the spliced parts of the upper clamp (531) and the lower clamp (532) are connected and fastened by screws (533).

3. a bridge bracing cable filled with protective gas according to claim 1 or 2, wherein:

The protective layers (3) are cut at two ends of the cable strand (1) close to the anchor cup (2), two protective layers (3) are cut at each end, the two cut protective layers (3) are symmetrically arranged on the outer side surface of the protective layer (3) along the central axis of the cable strand (1), the area of each cut protective layer (3) is 4cm ² -25 cm ², and the central angle is not larger than 15 degrees;

the protective gas is dry air or nitrogen, the pressure of the protective gas filled in the strand (1) is 0.1MPa to 0.5MPa, and the temperature is 10 ℃ to 50 ℃.

4. The method for manufacturing a bridge cable filled with a protective gas according to claim 1 or 2, wherein: the method is implemented in sequence according to the following steps:

Cutting: cutting off a part of the protective layer (3) at one end of the strand (1) close to the anchor cup (2), so that the strand (1) in the area where the protective layer (3) is cut off is exposed, and the area where the protective layer (3) is cut off is respectively used as an inflation inlet (41); cutting off a part of the protective layer (3) at the other end of the strand (1) close to the anchor cup (2), so that the strand (1) in the area where the protective layer (3) is cut off is exposed, and the areas where the protective layer (3) is cut off are respectively used as detection ports (42);

Covering a gas hood: the air cover (51) is sleeved outside the inflation port (41) and the detection port (42), the inflation port (41) and the detection port (42) are completely sealed by the air cover (51), the air cover (51) is hooped outside the protective layer (3), an observation window (52) is arranged on the air cover (51) and used for observing steel wires inside the cable strand (1), and the air cover (51) is fixed by a snail clamp (53) outside;

the air hood (51) at the inflating port (41) is connected with the inflating pipe (7) through the quick connector (6) for inflating, and the air hood (51) at the detecting port (42) is respectively connected with the temperature-humidity meter (81) and the barometer (82) through the quick connector (6) for monitoring the temperature and humidity changes in the cable strand (1);

Thirdly, inflating: protective gas is filled into the cable strand (1) through the gas hood (51), the protective gas is dry air or nitrogen, the temperature, the humidity and the air pressure in the cable strand (1) are observed through the temperature-humidity meter (81) and the barometer (82), the quick connectors (6) at the two ends are pulled out after the inflation is stopped, and the inflation tube (7), the temperature-humidity meter (81) and the barometer (82) are detached.

5. The method for manufacturing a bridge cable filled with a protective gas according to claim 4, wherein:

Firstly, cutting off the protective layers (3) at two ends of the cable strand (1) close to the anchor cup (2), cutting off two protective layers (3) at each end, symmetrically arranging the two cut-off protective layers (3) on the outer side surfaces of the protective layers (3) by using the central axis of the cable strand (1), wherein the area of each cut-off protective layer (3) is 4cm ² -25 cm ², and the central angle is not more than 15 degrees;

When the step II is carried out, the snail clamping (53) is formed by splicing an upper clamp (531) and a lower clamp (532), the upper clamp (531) and the lower clamp (532) are both in a semicircular shape, the upper clamp (531) and the lower clamp (532) are oppositely spliced by an opening and hoop an air hood (51) in the spliced ring, and the spliced parts of the upper clamp (531) and the lower clamp (532) are connected and fastened by screws (533);

and step three, selecting dry air or nitrogen as the protective gas, wherein the pressure of the protective gas filled in the strand (1) is 0.1-0.5 MPa, the temperature is 10-50 ℃, and when the protective gas is air, the gas is stopped to be filled when the humidity of the gas in the strand (1) is lower than 50%, and when the protective gas is nitrogen, the gas is stopped to be filled when the concentration of the nitrogen in the strand (1) is higher than 95%.

Technical Field

The invention relates to the field of suspension cables of bridge parts, in particular to a bridge inhaul cable filled with protective gas and a manufacturing method thereof.

Background

The design life of the cable-stayed bridge with the ultra-large span (generally, the span is more than 1000 m) is generally more than 100 years, the working environment is river-crossing, sea-crossing and the like, and the stay cable is severely corroded due to the severe environment caused by the large air humidity and the large environmental temperature change. At present, the service life of the stay cable can reach 50 years, and the stay cable is mainly realized by filling anticorrosive grease in a cable body and extruding double-layer high-density polyethylene on an outer layer. However, in the actual use process, along with the use of the inhaul cable, the anti-corrosion grease in the inhaul cable body gradually loses to lose the protection of the steel wire, and the service life of the inhaul cable for 50 years is difficult to be really realized. For the cable-stayed bridge with the design life of more than 100 years, cable replacement is carried out at least once, the cable replacement cost generated by the cable-stayed bridge greatly exceeds the manufacturing cost of the cable-stayed bridge, and meanwhile, the safety of the bridge is seriously influenced and the traffic operation is seriously hindered, especially for the large-span cable-stayed bridge across the sea, the influence is more serious.

disclosure of Invention

The invention discloses a bridge inhaul cable filled with protective gas and a manufacturing method thereof, aiming at overcoming the defects of the prior art and providing a bridge inhaul cable which is simple in structure, convenient to operate, safe and environment-friendly.

the invention achieves the purpose by the following technical scheme:

the utility model provides a fill protective gas's bridge cable, includes strand, anchor cup and protective layer, and the strand comprises the steel wire, and the anchor cup is respectively fixed at the both ends of strand, and the protective layer is covered in the lateral surface facing of strand, characterized by: also comprises an air hood, a quick joint, an inflation tube, a temperature-humidity meter and an air pressure meter,

The cable strand is characterized in that partial protective layers are respectively cut off at two ends of the cable strand close to the anchor cup, so that the cable strand of the region where the protective layers are cut off is exposed, the two regions except the protective layers are respectively used as an inflation inlet and a detection inlet, an inflation cover is sleeved on the inflation inlet and the detection inlet, the inflation inlet and the detection inlet are completely sealed by the inflation cover, the inflation cover is hooped outside the protective layers, an observation window is arranged on the inflation cover, the inflation cover is fixed by a clamping volute, the inflation cover at the inflation inlet is connected with an inflation pipe through a quick connector, the inflation cover at the detection inlet is respectively connected with a temperature-humidity meter and a barometer through the quick connector, and protective gas is filled into the cable strand through the.

The bridge inhaul cable filled with protective gas is characterized in that: the clamping worm is formed by splicing an upper clamp and a lower clamp, the upper clamp and the lower clamp are both in a semicircular shape, the upper clamp and the lower clamp are oppositely spliced by an opening and hooped in a spliced ring, and the splicing part of the upper clamp and the lower clamp is connected and fastened by a screw.

The bridge inhaul cable filled with protective gas is characterized in that:

The protective layers are cut at two ends of the cable strand close to the anchor cup, two protective layers are cut at each end, the two cut protective layers are symmetrically arranged on the outer side surface of the protective layer along the central axis of the cable strand, the area of each cut protective layer is 4cm ² -25 cm ², and the central angle is not larger than 15 degrees;

The protective gas is dry air or nitrogen, the pressure of the protective gas filled in the strand is 0.1MPa to 0.5MPa, and the temperature is 10 ℃ to 50 ℃.

The manufacturing method of the bridge inhaul cable filled with the protective gas is characterized in that: the method is implemented in sequence according to the following steps:

Cutting: cutting off a part of the protective layer at one end of the strand close to the anchor cup, so that the strand in the area where the protective layer is cut off is exposed, and the area where the protective layer is cut off is respectively used as an inflation inlet; cutting off a part of the protective layer at the other end of the strand close to the anchor cup, so that the strand in the area where the protective layer is cut off is exposed, and the areas where the protective layer is cut off are respectively used as detection ports;

Covering a gas hood: the gas hood is sleeved outside the inflation inlet and the detection port, the gas hood completely seals the inflation inlet and the detection port respectively, the gas hood is hooped outside the protective layer, an observation window is arranged on the gas hood and used for observing steel wires inside the cable strands, and the gas hood is fixed by a snail clamp;

The gas hood at the gas filling port is connected with a gas filling pipe through a quick connector for gas filling, and the gas hood at the detection port is respectively connected with a temperature-humidity meter and a barometer through the quick connector for monitoring the temperature and humidity change in the cable strand;

thirdly, inflating: and (3) filling protective gas into the cable strand through the gas hood, wherein the protective gas is dry air or nitrogen, observing the temperature, the humidity and the air pressure in the cable strand through the temperature-humidity meter and the air pressure meter, pulling out the quick connectors at two ends after stopping filling the gas, and detaching the gas filling pipe, the temperature-humidity meter and the air pressure meter.

the manufacturing method of the bridge inhaul cable filled with the protective gas is characterized in that:

Firstly, cutting off two protective layers at two ends of the cable strand close to the anchor cup, cutting off two protective layers at each end, symmetrically arranging the two cut-off protective layers on the outer side surface of the protective layer by using the central axis of the cable strand, wherein the area of the protective layer cut off at each position is 4cm ² -25 cm ², and the central angle is not more than 15 degrees;

secondly, the worm clamping tool is formed by splicing an upper clamp and a lower clamp, the upper clamp and the lower clamp are semicircular, the upper clamp and the lower clamp are oppositely spliced by an opening and hooped in the spliced rings by an air cover, and the spliced parts of the upper clamp and the lower clamp are connected and fastened by screws;

And step three, selecting dry air or nitrogen as the protective gas, wherein the pressure of the protective gas filled in the strand is 0.1-0.5 MPa, the temperature is 10-50 ℃, and when the protective gas is air, the gas is stopped to be filled when the humidity of the gas in the strand is lower than 50%, and when the protective gas is nitrogen, the gas is stopped to be filled when the concentration of the nitrogen in the strand is higher than 95%.

The invention can discharge the damp air in the cable strand at any time, monitor and control the air humidity in the cable strand, prevent the steel wires in the cable strand from being oxidized and rusted, prolong the service life of the stay cable and greatly save the maintenance and operation cost of the bridge.

the invention has the beneficial effects that: simple structure, simple operation, safety ring protects.

drawings

FIG. 1 is a schematic structural view of the present invention

Fig. 2 is a front view of the chuck worm according to the present invention.

Detailed Description

The invention is further illustrated by the following specific examples.