CN210420864U - Steel wire with on-site quick connection function for main cable of suspension bridge - Google Patents
Steel wire with on-site quick connection function for main cable of suspension bridge Download PDFInfo
- Publication number
- CN210420864U CN210420864U CN201920431793.0U CN201920431793U CN210420864U CN 210420864 U CN210420864 U CN 210420864U CN 201920431793 U CN201920431793 U CN 201920431793U CN 210420864 U CN210420864 U CN 210420864U
- Authority
- CN
- China
- Prior art keywords
- steel wire
- head
- extrusion
- extrusion sleeve
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model relates to a suspension bridge is steel wire for main push-towing rope with on-spot quick connect function, the end of steel wire is provided with the crimping head, and the one end of crimping head is the extrusion head, and the other end is the connector, the extrusion head is the extrusion sleeve of tubbiness, and the end of steel wire stretches into in the extrusion sleeve, and under the effect of external extrusion steel wire end and extrusion sleeve warp each other the gomphosis and link together; the connectors of the crimping heads which are respectively and correspondingly arranged at the head and tail ends of the two steel wires to be connected end to end are connected through connecting sleeves. The crimping connectors are arranged at the head end and the tail end of the steel wire coil in advance, the on-site quick connection of the two steel wires can be realized only by screwing the head end and the tail end of the two steel wire coils through the double-end left-right rotating connecting sleeve on site, and the operation efficiency of on-site steel wire connection is obviously improved.
Description
Technical Field
The utility model belongs to building bridge main push-towing rope structure field, concretely relates to connection structure between steel wire for main push-towing rope.
Background
The suspension bridge is one of the bridge types with the strongest spanning capability, and from the development of bridges in the world, the bridge develops towards the direction of spanning longer span, larger scale and spanning straits or open sea. The large-scale cross-sea engineering currently planned in China comprises cross-sea channel engineering of a Qionzhou channel, cross-sea channel engineering of a Bohai Bay, cross-sea channel engineering of a Chinese Taiwan channel and cross-sea connection channel engineering of China Korean, and suspension bridge schemes with single span of 2000-3000 m appear in collection schemes of the projects. Meanwhile, in order to accelerate the western development, China starts the connection engineering of mountain roads in the southwest mountainous area, and a new problem different from the construction of a suspension bridge on a river occurs in the construction of the suspension bridge in the mountainous area, namely the construction site is limited due to the influence of the mountainous area terrain, and a lot of large-scale equipment and bridge members cannot be transported to the field. The construction method commonly used in the suspension bridge main cable strand of China at present is a method for prefabricating parallel steel wire strands. The method is characterized in that the cable strand is a traction unit and then is bound into a main cable. Meanwhile, the requirement of the required traction equipment is high due to the fact that the main cable strand of the large-span suspension bridge is heavy. Therefore, in order to meet the development requirements of the current industry, a novel construction method needs to be developed to meet the construction requirements of the large-scale engineering.
At present, the main cable erection method of the suspension bridge mainly comprises two methods: an air spinning process (AS process) and a prefabricated parallel wire strand process (PPWS process). The AS method is a method of knitting a plurality of steel wires into a steel wire strand on a catwalk by taking the steel wires AS a traction unit, and then binding a plurality of strands to form a main cable; the PPWS law uses a strand as a pulling unit, and then ties the strand into a main cable. The main cable strand of the large-span suspension bridge is heavy, the requirement on traction equipment is high, and particularly when the large-span suspension bridge is built in a mountain area where traffic is not available, the PPWS method has larger transportation difficulty than the AS method, so that the AS method is preferred for the construction of the large-span suspension bridge in the mountain area.
For the AS method, because of the endless wire strand, the wires need to be connected to each other by a steel sleeve, and the connection device AS a part of the main cable will participate in long-term load bearing. The main cable wires are supplied in reels, the weight of which does not exceed 2 tonnes at most. From the construction needs, the steel wires have to be lengthened. The conventional wire lengthening structure (wire connector) is of a screw connection type, in which a screw thread is formed by spirally pressing the end of a wire with a left hand and a right hand, and the end is obliquely cut. The two steel wire coils to be lengthened are clamped by pliers and are penetrated into two ends of a sleeve with screw threads. The sleeve is rotated so that the two wire ends to be lengthened are drawn together. At this point, the length of the thread exposed outside the casing is taken into account, and the two chamfered ends are ensured to be abutted, so that when the steel wires are pulled, the chamfered ends of the two steel wires are clamped with each other and cannot be slightly withdrawn due to rotation. The corresponding construction process is that after the ends of the steel wires are inserted into the sleeves, the sleeves are extruded by a hard die (extruded twice according to different directions) until the inner walls of the sleeves are embedded with the surface of the steel wires in a concave-convex mode. The work needs to be finished on site operation on a construction site, the efficiency is low, and the operation quality cannot be effectively guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a suspension bridge main push-towing rope steel wire convenient to on-spot high-speed joint to improve the efficiency of construction of air spinning worker method (AS method), ensure reliable connection between the steel wire.
The utility model provides a technical scheme that above-mentioned problem adopted does: a steel wire for a main cable of a suspension bridge with a field quick connection function is provided, wherein the end of the steel wire is provided with a compression joint, one end of the compression joint is an extrusion head, the other end of the compression joint is a connector, the extrusion head is a barrel-shaped extrusion sleeve, the end of the steel wire extends into the extrusion sleeve, and the end of the steel wire and the extrusion sleeve are mutually deformed and embedded to be connected together under the action of external extrusion; the connectors of the crimping heads which are respectively and correspondingly arranged at the head and tail ends of the two steel wires to be connected end to end are connected through connecting sleeves.
Furthermore, right-handed external threads or left-handed external threads are formed on the outer surface of the connector of the crimping connector arranged at the tail end of the steel wire, left-handed external threads or right-handed external threads are formed on the outer surface of the connector of the crimping connector arranged at the head end of the steel wire, and the spiral directions of the external threads of the connector of the head end crimping connector and the external threads of the connector of the tail end crimping connector are opposite; correspondingly, the inner peripheral wall of the connecting sleeve is formed with an internal thread matched with the left-right-hand external thread. The connecting sleeve is a double-end left-right rotating connecting sleeve and can be screwed on or disengaged from the head-tail connecting heads simultaneously.
Furthermore, the extrusion sleeve comprises an outer extrusion sleeve and an inner extrusion sleeve, the inner extrusion sleeve fills a gap between the outer extrusion sleeve and the steel wire end head, and the outer extrusion sleeve, the inner extrusion sleeve and the steel wire end head are deformed together and are mutually embedded together. The inner extrusion sleeve can collapse and deform in extrusion, the extrusion force of the steel wire and the outer extrusion sleeve is improved, the connection reliability of the steel wire and the extrusion sleeve is improved, and the strength reduction caused by extrusion deformation is facilitated to be compensated.
In order to improve the bonding strength of the inner and outer extrusion sleeves, the inner ring of the port of the outer extrusion sleeve is gradually narrowed into a wedge shape, the outer ring of the port of the inner extrusion sleeve is gradually narrowed into a wedge shape, and the wedge-shaped surface of the port of the outer extrusion sleeve and the wedge-shaped surface of the port of the inner extrusion sleeve are mutually abutted to form a limit for preventing the inner extrusion sleeve from being separated from the outer extrusion sleeve.
In addition, in order to facilitate accurate operation and avoid the installation error of the crimping head, the crimping head arranged at the tail end of the steel wire and the crimping head arranged at the head end of the steel wire are respectively marked with different colors in a distinguishing way.
Preferably, the connector is provided with a removable protective sleeve which is temporarily fitted over the connector. The protective sleeve is in the shape of a cap or a sleeve. The connecting head is sleeved outside the connecting head thread, a steel wire and an extrusion sleeve (namely a crimping head) are firstly installed to the end of the steel wire, and then a protective sleeve is installed to protect the connecting head thread from being damaged in the transportation process.
Compared with the prior art, the utility model has the advantages of: the crimping connectors are arranged at the head end and the tail end of the steel wire coil in advance, the on-site quick connection of the two steel wires can be realized only by screwing the head and tail connectors of the two steel wire coils through the double-end left-right rotating connecting sleeve on site, and the on-site operation efficiency is obviously improved. And the extrusion connection operation of the extrusion head and the steel wire is completely finished in a factory, so that the effect is better compared with field operation, and the connection is more reliable.
Drawings
FIG. 1 shows the structure of a crimp connection (without an inner squeeze sleeve) according to the present invention;
FIG. 2 shows another embodiment of the present invention with an internal extrusion sleeve;
FIG. 3 is a structure of the steel wire coil of the present invention;
FIG. 4 shows the state of the steel wire and the pressing joint of the present invention;
FIG. 5 is a fitting structure of the steel wire and the press-connection joint of the present invention;
FIG. 6 is a fitting structure of the steel wire and the press-connection joint of the present invention;
fig. 7 is a schematic view of the connection of the head and tail end crimping connectors of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
Example 1
This embodiment relates to steel wire for suspension bridge main push-towing rope, and the head and the tail end of steel wire 4 are provided with the crimping head respectively, and in order to distinguish, scribble red with steel wire head end crimping head, scribble blue with the crimping head of steel wire tail end. One end of the pressure joint is a cylindrical extrusion head, and the other end is a cylindrical connector 1. The extrusion head is extrusion sleeve, including outer extrusion sleeve 2 and interior extrusion sleeve 3, and the end of steel wire 4 stretches into in extrusion sleeve 3 including, and outer extrusion sleeve 2, interior extrusion sleeve 3, steel wire end warp together under extrusion die 7's squeezing action to the looks gomphosis is in the same place.
Extrusion of the wire with the extrusion head with reference to fig. 4, the extrusion head is extruded from two directions, respectively, with a significant irregular deformation.
The outer surface of the connector 1 of the compression joint arranged at the tail end of the steel wire is formed with a right-handed external thread, and the outer surface of the connector 1 of the compression joint arranged at the head end of the steel wire is formed with a left-handed external thread; the connectors of the head and tail end crimping connectors are connected together through the double-head left and right screwing connectors 5. The connector that does not connect disposes protective sheath 6, and protective sheath 6 overlaps the connector outside temporarily. The protective sleeve 6 is in the form of a cap or a tube, see fig. 5 and 6, which protects the external thread of the connector.
The inner ring of the port of the outer extrusion sleeve 2 is gradually narrowed into a wedge shape, the outer ring of the port of the inner extrusion sleeve 3 is gradually narrowed into a wedge shape, and the wedge-shaped surface of the port of the outer extrusion sleeve 2 and the wedge-shaped surface of the port of the inner extrusion sleeve 3 are mutually abutted to form a limit for preventing the inner extrusion sleeve 3 from being separated from the outer extrusion sleeve 2.
The manufacturing method of the main cable steel wire of the suspension bridge comprises the following steps,
(1) manufacturing a compression joint by adopting high-strength alloy steel, and processing one end of the compression joint into a cylindrical external extrusion sleeve; the other end of the connecting head is processed into a connecting head with external threads, an inner extrusion sleeve is arranged in the outer extrusion sleeve, the inner extrusion sleeve can be a spring or a cylindrical aluminum alloy sleeve, the crimping head is divided into a head end crimping head and a tail end crimping head according to the rotating direction of the external threads of the connecting head, and the head end crimping head and the tail end crimping head are respectively coated with colors for distinguishing;
the cylindrical outer extrusion sleeve ensures that the whole stress is uniform during extrusion and has enough strength after extrusion. The inner extrusion sleeve can collapse and deform in the extrusion process, so that the extrusion force of the steel wire and the outer extrusion sleeve is improved, and the connection reliability of the steel wire and the extrusion sleeve is improved.
(2) Taking a steel wire coil, drawing out the ends at the two ends of the steel wire, sleeving a head end pressing joint on the head end of the steel wire, sleeving a tail end pressing joint on the tail end of the steel wire, and extruding the steel wire end, an outer extrusion sleeve and an inner extrusion sleeve together by a pressing machine to enable the inner part and the outer part to be sequentially deformed and to be mutually embedded and fixedly connected; then, a protective sleeve is sleeved outside the exposed connector;
(3) arranging the steel wire coils, conveying the steel wire coils to a construction site, taking out the two steel wire coils to be connected end to end, arranging the head and tail end crimping heads, taking down the protective sleeve, and screwing the head and tail connectors of the two steel wire coils by adopting a double-head left-right rotating connecting sleeve.
The strength of the steel wire for the main cable of the large-span suspension bridge reaches more than 1860MPa, deep research needs to be carried out aiming at the two steel wire connector modes, and the steel wire connector and the connection technology suitable for the project are selected to meet engineering requirements and realize the localization of related technologies. The connector research content comprises material selection, structural design, processing technology, anticorrosion technology, dynamic and static load performance test and the like of the connector. The strength of the steel wire joint is not lower than 0.95 of the strength of the original steel wire.
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 (6)
1. The utility model provides a steel wire for suspension bridge main push-towing rope with on-spot quick connect function which characterized in that: the end of the steel wire is provided with a compression joint, one end of the compression joint is an extrusion head, the other end of the compression joint is a connector, the extrusion head is a barrel-shaped extrusion sleeve, the end of the steel wire extends into the extrusion sleeve, and the end of the steel wire and the extrusion sleeve are mutually deformed and embedded under the action of external extrusion to be connected together; the connectors of the crimping heads which are respectively and correspondingly arranged at the head and tail ends of the two steel wires to be connected end to end are connected through connecting sleeves.
2. The steel wire for a main cable of a suspension bridge having a field quick connect function according to claim 1, wherein: the outer surface of the connector of the crimping connector arranged at the tail end of the steel wire is formed with a right-handed external thread or a left-handed external thread, the outer surface of the connector of the crimping connector arranged at the head end of the steel wire is formed with a left-handed external thread or a right-handed external thread, and the spiral directions of the external threads of the connector of the head end crimping connector and the external threads of the connector of the tail end crimping connector are opposite; correspondingly, the inner peripheral wall of the connecting sleeve is formed with an internal thread matched with the left-right-hand external thread.
3. The steel wire for a main cable of a suspension bridge having a field quick connect function according to claim 1, wherein: the extrusion sleeve comprises an outer extrusion sleeve and an inner extrusion sleeve, the inner extrusion sleeve fills a gap between the outer extrusion sleeve and the steel wire end, and the outer extrusion sleeve, the inner extrusion sleeve and the steel wire end are deformed together and are mutually embedded together.
4. The steel wire for a main cable of a suspension bridge having a field quick connect function according to claim 3, wherein: the inner ring of the port of the outer extrusion sleeve is gradually narrowed into a wedge shape, the outer ring of the port of the inner extrusion sleeve is gradually narrowed into a wedge shape, and the wedge-shaped surface of the port of the outer extrusion sleeve and the wedge-shaped surface of the port of the inner extrusion sleeve are mutually abutted to form a limit position for preventing the inner extrusion sleeve from being separated from the outer extrusion sleeve.
5. The steel wire for a main cable of a suspension bridge having a field quick connect function according to claim 1, wherein: the pressing joint arranged at the tail end of the steel wire and the pressing joint arranged at the head end of the steel wire are respectively marked with different colors.
6. The steel wire for a main cable of a suspension bridge having a field quick connect function according to claim 1, wherein: the connector is provided with a detachable protective sleeve which is temporarily sleeved outside the connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920431793.0U CN210420864U (en) | 2019-04-01 | 2019-04-01 | Steel wire with on-site quick connection function for main cable of suspension bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920431793.0U CN210420864U (en) | 2019-04-01 | 2019-04-01 | Steel wire with on-site quick connection function for main cable of suspension bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210420864U true CN210420864U (en) | 2020-04-28 |
Family
ID=70361242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920431793.0U Active CN210420864U (en) | 2019-04-01 | 2019-04-01 | Steel wire with on-site quick connection function for main cable of suspension bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210420864U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029577A (en) * | 2019-04-01 | 2019-07-19 | 江苏法尔胜缆索有限公司 | A kind of main rope of suspension bridge steel wire with live quickly linkage function |
-
2019
- 2019-04-01 CN CN201920431793.0U patent/CN210420864U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029577A (en) * | 2019-04-01 | 2019-07-19 | 江苏法尔胜缆索有限公司 | A kind of main rope of suspension bridge steel wire with live quickly linkage function |
| CN110029577B (en) * | 2019-04-01 | 2024-03-15 | 江苏法尔胜缆索有限公司 | Steel wire with field quick connection function for main cable of suspension bridge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100507177C (en) | Cable reeving device and its reeving method | |
| CN104882830B (en) | A kind of cable drum draws fixture | |
| CN101210447B (en) | Steel strand integral bundle extrusion anchor cable guy cable | |
| CN109616849B (en) | Method for butt joint and aluminum embedding of 19 stranded steel strands of overhead conductor | |
| CN210420864U (en) | Steel wire with on-site quick connection function for main cable of suspension bridge | |
| CN111431092B (en) | Installation optimization method for gap type wire balance hanging wire | |
| CN200999418Y (en) | Steel strand hank extruding anchor wire bracing cable | |
| CN110029577B (en) | Steel wire with field quick connection function for main cable of suspension bridge | |
| CN109740271A (en) | Operating temperature evaluation method after a kind of embedding aluminium of aerial condutor steel strand wires docking crimps | |
| CN101599625B (en) | Tension resisting metal tool for OPPC and installation method thereof | |
| CN108104479A (en) | A kind of whole beam draft gear of prestress wire and its construction method for prestressing tendon integrally dragging | |
| CN202787074U (en) | Steel strand wire extrusion anchor backstay cable | |
| CN110350327A (en) | The embedding aluminium strain clamp crimping structure of 7 strand steel strand wires of one kind and its compression bonding method | |
| CN203339610U (en) | Strain wire clamp used for 10kV overhead power distribution line | |
| CN205242854U (en) | Steel strand connector | |
| CN212199842U (en) | Clamp for untwisting steel wire rope | |
| CN101386370A (en) | Steel wire rope connector | |
| CN207092389U (en) | A kind of steel strand connector | |
| CN110416951B (en) | Aluminum strain clamp structure embedded in steel-cored aluminum stranded wire | |
| CN210195277U (en) | Traction tool for steel strand | |
| CN207502285U (en) | Power transmission tower aluminum stranded conductor tensile test fixture | |
| CN102545121A (en) | Method for connecting hydraulic tension resistant wire clip with lead | |
| CN214349318U (en) | Portable steel wire crimping ware | |
| CN207919356U (en) | Minor diameter steel strand integral bundle squeezes drag-line | |
| CN212968115U (en) | Long-distance transmission high-voltage overhead line conductor butt joint device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |