CN102587572A - Steel strand stay rope and manufacturing method thereof - Google Patents
Steel strand stay rope and manufacturing method thereof Download PDFInfo
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- CN102587572A CN102587572A CN2012100941010A CN201210094101A CN102587572A CN 102587572 A CN102587572 A CN 102587572A CN 2012100941010 A CN2012100941010 A CN 2012100941010A CN 201210094101 A CN201210094101 A CN 201210094101A CN 102587572 A CN102587572 A CN 102587572A
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Abstract
The invention relates to a steel strand stay rope and a manufacturing method thereof. The steel strand stay rope comprises a first forking lug anchor head, a first loose preventing device, a first internal thread connecting sleeve, a first steel strand anchorage device, a steel strand, a second steel strand anchorage device, a second internal thread connecting sleeve, a second loose preventing device, a connecting threaded rod, an adjusting sleeve and a second forking lug anchor head. The steel strand stay rope is characterized in that the two ends of the steel strand are respectively extended into the first internal thread connecting sleeve and the second internal thread connecting sleeve, are anchored through the first steel strand anchorage device and the second steel strand anchorage device and are fixed through the first loose preventing device and the second loose preventing device; the first forking lug anchor head is connected with the first internal thread connecting sleeve; one end of the connecting threaded rod is connected with the second internal thread connecting sleeve, and the other end of the connecting threaded rod is connected with one end of the adjusting sleeve; and the second forking lug anchor head is connected with the other end of the adjusting sleeve through an external thread. The steel strand stay rope has the advantages that the diameter is small, the strength is high, the anchor head is small in volume and can be reliably anchored, the machining and manufacturing are convenient, and the manufacturing cost is lower.
Description
Technical field
The invention belongs to the prestress steel cable technical field, particularly, relate to a kind of guy of twisted steel cable and preparation method thereof.
Background technology
In the prior art, usually use the middle major diameter steel cable that is made by many (tens to the hundreds of root) parallel wire units on the construction steel structure, the connection technology that is connected chill casting behind the employing steel wire pier nose or hot-cast of the type drag-line and anchor head.But the volume of such anchor head is bigger, and cost of manufacture is high.If in stressed little structure, use this major diameter steel tendon drag-line, the cost problem of higher certainly will occur; And the anchor head volume of middle major diameter steel cable is bigger, also is not suitable for the high-intensity single steel strand drag-line of minor diameter.
Use in the building structure of stable drag-line at needs, adopt reinforcing pull rod usually, but the intensity of reinforcing pull rod is lower, is mostly below the 550MPa.So under equal stress condition, it is bigger that reinforcing pull rod is compared the required diameter of drag-line; And the supply of material limited length of reinforcing pull rod, about 6 meters, difficulty satisfies tens meters to tens meters building length needs usually.
Extensive use and fast development along with prestressed steel structure; In construction steel structure, be badly in need of a kind of minor diameter (Φ is 21.8 below), high strength (1670MPa-1860MPa), the anchor head volume is little, anchoring reliable and the lower steel cable of cost of manufacture, does not still still have this kind complete sets of products at present.
Summary of the invention
For overcoming the deficiency of prior art, the purpose of this invention is to provide single steel strand drag-line that a kind of minor diameter, high strength, anchor head volume are little, anchoring reliable and cost of manufacture is lower and preparation method thereof.
The present invention adopts following technical scheme to realize above-mentioned purpose:
A kind of guy of twisted steel cable; Comprise the first fork ear anchor head, first check device, the first internal thread branch sleeve, first steel strand anchorage, steel strand, second steel strand anchorage, the second internal thread connecting cylinder, second check device, connecting screw rod, regulating sleeve, the second fork ear anchor head, it is characterized in that: the two ends of said steel strand stretch into respectively in the first internal thread branch sleeve and the second internal thread branch sleeve, fix through first steel strand anchorage and the second steel strand anchorage anchoring and by first check device and second check device; The said first fork ear anchor head is connected with the first internal thread branch sleeve; Said connecting screw rod one end is connected with the second internal thread branch sleeve, the other end is connected with an end of regulating sleeve; The said second fork ear anchor head is connected with the other end of regulating sleeve through external screw thread.
Hinge ear one end of the said first fork ear anchor head and the second fork ear anchor head has external screw thread, the other end is single hinging-ear or two hinge ear; The end that the said first internal thread branch sleeve is connected with the first fork ear anchor head is provided with the corresponding internal thread of external screw thread with the first fork ear anchor head, and the first fork ear anchor head is threaded with the first internal thread branch sleeve; The end that the said second internal thread branch sleeve is connected with connecting screw rod is provided with internal thread; Connecting screw rod is a column structure, and the connecting screw rod two ends have external screw thread, the centre has the spiral shell button; Regulating sleeve is a cylindrical drum structure, and regulating sleeve is provided with the corresponding internal thread of external screw thread with the connecting screw rod and the second fork ear anchor head, has the spiral shell button in the middle of the regulating sleeve; Connecting screw rod one end through external screw thread be connected with the second internal thread connecting cylinder internal thread, the other end passes through external screw thread and is connected with the regulating sleeve internal thread; The other end of regulating sleeve is connected with the second fork ear anchor head external screw thread through internal thread.
Said first check device and the second check device outside have that external screw thread, centre have circular hole, the position, termination has two screw holes, and screw hole is convenient to tightening of check device when mounted; First check device is connected with the first internal thread connecting cylinder internal thread through external screw thread, and second check device is connected with the second internal thread connecting cylinder internal thread through external screw thread; Said steel strand two ends can prevent that first steel strand anchorage, second steel strand anchorage from oppositely getting loose respectively through first check device, second check device when steel strand are lax.
The inside wall flare of the said first internal thread connecting cylinder and the second internal thread connecting cylinder and steel strand link; The end only holds steel strand and passes through; When steel strand were drawn, first steel strand anchorage, second steel strand anchorage were the locking state with the first internal thread connecting cylinder, the second internal thread connecting cylinder respectively.
Said first steel strand anchorage and second steel strand anchorage are three screwed wedge shape intermediate plates in inside, with can be well after steel strand contact fixing steel strand, prevent slippage; Said first steel strand anchorage and second steel strand anchorage are diameter 21.8mm and following single glass of ground tackle of special-purpose steel twisted wire that includes intermediate plate; Said guy of twisted steel cable standard tensile strength is 1670Mpa-1860Mpa.
The said first fork ear anchor head, second is pitched ear anchor head, regulating sleeve, the first internal thread connecting cylinder and the second internal thread connecting cylinder plating zinc on surface or is coated with and is brushed with the anticorrosion of steel structure lacquer.
Said steel strand are zinc-plated carbon steel steel strand or not zinc-plated carbon steel steel strand; Said steel strand surface is surrounded by the monolayer plastic skin outward or does not wrap plastic skin.
Also comprise bearing pin and pin, said bearing pin one end has and the screwed hole that matches of pin external screw thread, and this end has pad, through tightening pin, can spacers to bearing pin and make it to be fastenedly connected with otic placode, prevent that bearing pin from getting loose.The said first fork ear anchor head and the second fork ear anchor head are provided with pin shaft hole, and said pin shaft hole and bearing pin cooperate.
The preparation method of described guy of twisted steel cable comprises the steps:
(1), select single steel strand, by the design size blanking, and end portion plastic skin sheath removed or cleans out;
(2), carry out the machine work of the first fork ear anchor head, the second fork ear anchor head, first check device, second check device, the first internal thread branch sleeve, the second internal thread branch sleeve, connecting screw rod and regulating sleeve according to the design drawing size;
(3), with the steel strand two ends stretch into respectively in the first internal thread branch sleeve and the second internal thread branch sleeve, through first steel strand anchorage and second steel strand anchorage with the steel strand anchoring, and be fixed by first and second check devices;
(4), the first fork ear anchor head is connected with the first internal thread branch sleeve through external screw thread; Connecting screw rod one is connected with the second internal thread branch sleeve through external screw thread; The connecting screw rod other end is connected with regulating sleeve through external screw thread; The second fork ear anchor head is connected with regulating sleeve through external screw thread, processes the single steel strand drag-line.
Further, at the said first fork ear anchor head, the second fork ear anchor head, regulating sleeve, the first internal thread connecting cylinder and the second internal thread connecting cylinder plating zinc on surface or brushing anticorrosion of steel structure lacquer.
Because adopt said structure and preparation method, the present invention's guy of twisted steel cable has following beneficial effect:
1, the present invention is skillfully constructed, simple in structure, small and exquisite economy, power transmission route are clear and definite and can satisfy the requirement of structure design; And easy to process, raw material quality is reliable, cost is lower and have the relevant art standard to guarantee; Install and apply the prestressing force quick and safe, can be applicable in the multiple building structure.
2, the invention the novel connected mode between flexible steel strand and the rigidity anchor head.Through the special-purpose single glass of ground tackle of Φ 21.8 steel strand (in special-purpose intermediate plate is arranged), and through relevant connection member transmission load pulling force.Changed behind traditional steel wire pier nose the complicated technology that chill casting again or hot-cast connect, also be different from heavy method simultaneously the steel strand radial compression.The connected mode power transmission of new technology processing is clear and definite, and volume is little, and is simple in structure.
3, the first and second fork ear anchor heads, first and second check devices, the first and second internal thread branch sleeves, connecting screw rod and the regulating sleeve etc. of the present invention's employing process screw thread through stock-removing machine.Production technology is simple and reliable, is more convenient for controlling crudy.
4, on the otic placode of building structure, hydraulic jack equipment acts on regulating sleeve to the fork ear anchor head that adopts of the present invention by bearing pin and dowel fixes, and the length that can change whole cable wire is carried out stretch-draw.Can form the prestressing force rod member to the cable wire application of force, bear external load, solve the Stability Analysis of Structures problem.
5, the drag-line cable body is zinc-plated or not zinc-plated carbon steel steel strand finished product, and its standard tensile strength is 1670MPa-1860MPa, and quality such as mechanical index should meet " prestress wire tecnical regulations " YB/T5004-2001.Drag-line cable body external surface can pass through extrusion process outsourcing monolayer plastic skin, like 5000S type high density polyethylene (HDPE).The raw material supply of material and the quality of single steel strand drag-line are guaranteed.
6, single steel strand drag-line of the present invention can be used for load and is no more than the stable pull bar in 567kN tension member such as minor diameter suspension cable or the building structure.Remedied the vacancy of steel cable below 21.8 millimeters, cost is low, and production efficiency is high.
7, adopt the high-strength underrelaxation steel strand of single diameter below 21.8 millimeters,, and, use special-purpose jacking equipment to carry out prestressed stretch-draw, make it form the axially loaded unit through relevant connection member transmission load pulling force through Special ground tackle.Fork ear anchor head and other connector bodily form are small and exquisite, and reliability is high.
Description of drawings
Fig. 1 is a guy of twisted steel cable structural representation of the present invention;
Fig. 2 is a guy of twisted steel cable STRUCTURE DECOMPOSITION sketch map of the present invention;
Fig. 3 is an internal thread connecting cylinder structural representation;
Fig. 4 is the steel strand anchorage structural representation;
Fig. 5 is a check device texture edge sketch map;
Fig. 6 is a check device structure schematic top plan view;
Fig. 7 is the strand structure sketch map that is used to make drag-line;
Fig. 8 is the connecting screw rod structural representation;
Fig. 9 is the regulating sleeve structural representation.
Among the figure: 1, the first fork ear anchor head, 2, first check device, 3, the first internal thread branch sleeve, 4, first steel strand anchorage; 5, steel strand, 6, second steel strand anchorage, 7, the second internal thread connecting cylinder; 8, second check device, 9, connecting screw rod, 10, regulating sleeve; 11, the second fork ear anchor head, 12, bearing pin, 13, pin.
The specific embodiment
Below, in conjunction with accompanying drawing and embodiment the technical characterictic of guy of twisted steel cable of the present invention and preparation method thereof is further described.
Shown in Fig. 1-9, guy of twisted steel cable comprises the first fork ear anchor head, 1, the first check device, 2, the first internal thread branch sleeves 3; First steel strand anchorage 4, steel strand 5, the second steel strand anchorages 6, the second internal thread connecting cylinders 7; Second check device 8, connecting screw rod 9, regulating sleeve 10; The second fork ear anchor head 11, bearing pin 12, pin 13.
Shown in Fig. 1-2, the first fork ear anchor head, 1 one ends have two hinge ears, an end has external screw thread, and two hinge ears are used for being connected the otic placode that steel work presets through bearing pin 12 and pin 13; The said first fork ear anchor head 1 is provided with pin shaft hole, and said pin shaft hole and bearing pin 12 cooperate; Said bearing pin 12 is installed to earlier in the pin shaft hole of otic placode when connecting, and covers pad then, through tighten pin 13 spacers to bearing pin 12 and make it to be fastenedly connected with otic placode, prevent that bearing pin 12 from getting loose; The structure of the second fork ear anchor head 11 and the first fork ear anchor head 1 is identical.
Shown in Fig. 1-3; The first internal thread connecting cylinder 3 is a cylindrical drum structure; First inner thread sleeve, 3 one ends are provided with the corresponding internal thread of external screw thread with the first fork ear anchor head 1, and this is provided with female first inner thread sleeve 3 and first and pitches ear anchor head 1 and have externally threaded threaded one end and be connected; The internal face flare of first inner thread sleeve 3 and steel strand 5 links, the end only holds steel strand 5 and passes through; The structure of second inner thread sleeve 7 and first inner thread sleeve 3 is identical.
As shown in Figure 4, first steel strand anchorage 4 is three screwed wedge shape intermediate plates in inside, with can be well after steel strand 5 contact fixing steel strand, prevent slippage; When steel strand 5 were drawn, first steel strand anchorage 4 and the first internal thread connecting cylinder 3 were the locking state; The structure of second steel strand anchorage 6 and first steel strand anchorage 4 is identical.
Like Fig. 1-2, shown in the 5-6, first check device 2 is a circular barrel structure, and the outside has and the corresponding external screw thread of the internal thread of the first internal thread branch sleeve, is connected with the first internal thread branch sleeve 3 through external screw thread; Have circular hole in the middle of said first check device 2, can hold steel strand 5 and pass through, but when steel strand 5 relax, can prevent that second steel strand anchorage 6 from oppositely getting loose, thereby play locking effect; Position, said first check device, 2 termination has two screw holes, is convenient to tightening of check device through screw hole during installation; The structure of second check device 8 and first check device 2 is identical.Steel strand 5 one ends are through first steel strand anchorage 4 and 3 anchor connections of first inner thread sleeve; Said steel strand 5 other ends are through second steel strand anchorage 6 and 7 anchor connections of second inner thread sleeve.
As shown in Figure 7, present embodiment adopts 21.8 millimeters zinc-plated carbon steel steel strand of Φ, the outer monolayer plastic skin that is surrounded by in surface.Said steel strand 5 are that Φ below 21.8 millimeters, standard tensile strength are the steel strand of 1670Mpa-1860Mpa; Said steel strand 5 can be zinc-plated carbon steel steel strand or not zinc-plated carbon steel steel strand; Said steel strand 5 surfaces can be surrounded by the monolayer plastic skin outward or not wrap plastic skin.
As shown in Figure 8, connecting screw rod 9 is a cylindrical-shaped structure; Connecting screw rod 9 two ends have external screw thread, and the centre has the spiral shell button to make things convenient for turning of connecting screw rod 9; Connecting screw rod 9 one ends are connected with the second internal thread connecting cylinder 7 through external screw thread; Connecting screw rod 9 other ends are connected with regulating sleeve 10 through external screw thread.
As shown in Figure 9, regulating sleeve 10 is a cylindrical drum structure; Regulating sleeve 10 is provided with the corresponding internal thread of external screw thread with the connecting screw rod 9 and the second fork ear anchor head 11; Have the spiral shell button to make things convenient for its adjusting and rotation in installation process in the middle of the regulating sleeve 10; One end of regulating sleeve 10 is connected with connecting screw rod 9 through internal thread; The other end of regulating sleeve 10 is connected with the second fork ear anchor head 11 through internal thread.
The two ends of said steel strand stretch into respectively in the first internal thread branch sleeve and the second internal thread branch sleeve, fix through first steel strand anchorage and the second steel strand anchorage anchoring and by first check device and second check device; The first fork ear anchor head is threaded with the first internal thread branch sleeve; Connecting screw rod one end through external screw thread be connected with the second internal thread connecting cylinder internal thread, the other end passes through external screw thread and is connected with the regulating sleeve internal thread; The other end of regulating sleeve is connected with the second fork ear anchor head external screw thread through internal thread.
Said steel strand anchorage 6 is for containing diameter 21.8mm and following single glass of ground tackle of special-purpose steel twisted wire that includes intermediate plate.Can be zinc-plated or be coated with and be brushed with the anticorrosion of steel structure lacquer in the said first fork ear anchor head 1, the second fork ear anchor head 11, the first internal thread branch sleeve 3, the second internal thread connecting cylinder 7 and regulating sleeve 10 surfaces.
The hinge ear of the first fork ear anchor head, the second fork ear anchor head also can be single hinging-ear.
A kind of detailed preparation method of guy of twisted steel cable is following:
The first step: select single steel strand 5,, and end portion is removed the PE sheath perhaps clean out according to the blanking of design demand size;
Second step: carry out the machine work (comprising the internal and external threads work that cuts out) of the first fork ear anchor head 1, the second fork ear anchor head 11, first check device 2, second check device 8, the first internal thread branch sleeve 3, the second internal thread branch sleeve 7, connecting screw rod 9, regulating sleeve 10 according to the design drawing size;
The 3rd step: will know that clean steel strand 5 two ends stretch into respectively in the first internal thread branch sleeve 3 and the second internal thread branch sleeve 7;, and be fixed steel strand 5 anchorings through first steel strand anchorage 4 and second steel strand anchorage 6 through first check device 2 and second check device 8;
The 4th step: the first fork ear anchor head 1 is connected with the first internal thread branch sleeve 3 through external screw thread; Connecting screw rod 9 is connected with the second internal thread branch sleeve 7 through external screw thread; Connecting screw rod 9 other ends are connected with regulating sleeve 10 through external screw thread; The second fork ear anchor head 11 is connected with regulating sleeve 10 through external screw thread, accomplishes the assembling of single steel strand drag-line.
The operation instruction of guy of twisted steel cable: after design drawing assembling completion, through the stretch-draw static loading test, whether check meets design strength; The first fork ear anchor head 1 and the second fork ear anchor head 11 13 are connected on the otic placode that steel work presets with pinning through bearing pin 12 respectively; Hydraulic jack is acted on the two ends of regulating sleeve 10, carry out stretch-draw, change drag-line length through adjustment regulating sleeve 10; Make drag-line itself have certain prestressing force level; Reach the designing requirement prestress value, thereby the guy of twisted steel cable application of force is formed the prestressing force rod member, bear external load; Solve the Stability Analysis of Structures problem, satisfy requirement of engineering.The present invention's single steel strand drag-line can be used for load and is no more than the stable pull bar in 567kN tension member such as minor diameter suspension cable or the building structure.
Claims (10)
1. guy of twisted steel cable; Comprise the first fork ear anchor head, first check device, the first internal thread branch sleeve, first steel strand anchorage, steel strand, second steel strand anchorage, the second internal thread branch sleeve, second check device, connecting screw rod, regulating sleeve, the second fork ear anchor head, it is characterized in that: the two ends of said steel strand are stretched in the first internal thread branch sleeve and the second internal thread branch sleeve respectively, are also fixed by first check device and second check device respectively through first steel strand anchorage and the second steel strand anchorage anchoring respectively; The said first fork ear anchor head is connected with the first internal thread branch sleeve; Said connecting screw rod one end is connected with the second internal thread branch sleeve, the other end is connected with an end of regulating sleeve; The said second fork ear anchor head is connected with the other end of regulating sleeve through external screw thread.
2. guy of twisted steel cable according to claim 1 is characterized in that: an end of the said first fork ear anchor head and the second fork ear anchor head has external screw thread, the other end is single hinging-ear or two hinge ear; The end that the said first internal thread branch sleeve is connected with the first fork ear anchor head is provided with the corresponding internal thread of external screw thread with the first fork ear anchor head, and the first fork ear anchor head is threaded with the first internal thread branch sleeve; The end that the said second internal thread branch sleeve is connected with connecting screw rod is provided with internal thread; Connecting screw rod is a column structure, and the connecting screw rod two ends have external screw thread, the centre has the spiral shell button; Regulating sleeve is a cylindrical drum structure, and regulating sleeve is provided with the corresponding internal thread of external screw thread with the connecting screw rod and the second fork ear anchor head, has the spiral shell button in the middle of the regulating sleeve; Connecting screw rod one end through external screw thread be connected with the second internal thread connecting cylinder internal thread, the other end passes through external screw thread and is connected with the regulating sleeve internal thread; The other end of regulating sleeve is connected with the second fork ear anchor head external screw thread through internal thread.
3. according to the described guy of twisted steel cable of claim 1-2, it is characterized in that: said first check device and the second check device outside have external screw thread, the centre has circular hole; First check device is connected with the first internal thread connecting cylinder internal thread through external screw thread, and second check device is connected with the second internal thread connecting cylinder internal thread through external screw thread; Said steel strand two ends are respectively through first check device, second check device, and first check device, second check device can prevent that respectively first steel strand anchorage, second steel strand anchorage from oppositely getting loose when steel strand are lax.
4. according to the described guy of twisted steel cable of claim 1-3; It is characterized in that: the inside wall flare of the said first internal thread connecting cylinder and the second internal thread connecting cylinder and steel strand link; The end only holds steel strand and passes through; When steel strand were drawn, first steel strand anchorage, second steel strand anchorage were the locking state with the first internal thread connecting cylinder, the second internal thread connecting cylinder respectively.
5. according to the described guy of twisted steel cable of claim 1-4, it is characterized in that: said first steel strand anchorage and second steel strand anchorage are three screwed wedge shape intermediate plates in inside, with can be well after steel strand contact fixing steel strand, prevent slippage; Said first steel strand anchorage and second steel strand anchorage are diameter 21.8mm and following single glass of ground tackle of the steel strand that include intermediate plate; Said guy of twisted steel cable standard tensile strength is 1670Mpa-1860Mpa.
6. according to the described guy of twisted steel cable of claim 1-5, it is characterized in that: the said first fork ear anchor head, second is pitched ear anchor head, regulating sleeve, the first internal thread connecting cylinder and the second internal thread connecting cylinder plating zinc on surface or is coated with and is brushed with the anticorrosion of steel structure lacquer.
7. according to the described guy of twisted steel cable of claim 1-6, it is characterized in that: said steel strand are zinc-plated carbon steel steel strand or not zinc-plated carbon steel steel strand; Said steel strand surface is surrounded by the monolayer plastic skin outward or does not wrap plastic skin.
8. according to the described guy of twisted steel cable of claim 1-7, it is characterized in that: also comprise bearing pin and pin, the said first fork ear anchor head and the second fork ear anchor head are provided with pin shaft hole, and said pin shaft hole and bearing pin cooperate.
9. the preparation method of the described guy of twisted steel cable of claim 1-8 comprises the steps:
(1), select single steel strand, by the design size blanking, and end portion monolayer plastic skin removed or cleans out;
(2), carry out the machine work of the first fork ear anchor head, the second fork ear anchor head, first check device, second check device, the first internal thread branch sleeve, the second internal thread branch sleeve, connecting screw rod and regulating sleeve according to the design drawing size;
(3), with the steel strand two ends stretch into respectively in the first internal thread branch sleeve and the second internal thread branch sleeve, through first steel strand anchorage and second steel strand anchorage with the steel strand anchoring, and be fixed by first check device and second check device;
(4), the first fork ear anchor head is connected with the first internal thread branch sleeve through external screw thread; Connecting screw rod one end is connected with the second internal thread branch sleeve through external screw thread; The connecting screw rod other end is connected with regulating sleeve through external screw thread; The second fork ear anchor head is connected with regulating sleeve through external screw thread, processes the single steel strand drag-line.
10. the preparation method of guy of twisted steel cable according to claim 9; It is characterized in that: further, at the said first fork ear anchor head, the second fork ear anchor head, regulating sleeve, the first internal thread connecting cylinder and the second internal thread connecting cylinder plating zinc on surface or brushing anticorrosion of steel structure lacquer.
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| CN2012100941010A CN102587572A (en) | 2012-04-01 | 2012-04-01 | Steel strand stay rope and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100941010A CN102587572A (en) | 2012-04-01 | 2012-04-01 | Steel strand stay rope and manufacturing method thereof |
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| CN2012100941010A Pending CN102587572A (en) | 2012-04-01 | 2012-04-01 | Steel strand stay rope and manufacturing method thereof |
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| CN104612294A (en) * | 2014-08-20 | 2015-05-13 | 北京市建筑工程研究院有限责任公司 | Inhaul cable with stainless steel tube covered externally and production method thereof |
| CN105064621A (en) * | 2015-08-31 | 2015-11-18 | 裴唯雅 | Steel rope and reinforcing steel bar connector |
| CN106760221A (en) * | 2016-11-16 | 2017-05-31 | 广东坚朗五金制品股份有限公司 | Cable anchorage |
| CN108221668A (en) * | 2018-02-02 | 2018-06-29 | 柳州桂桥缆索有限公司 | A kind of adjustable architectural engineering drag-line and its method for stretching |
| CN113107182A (en) * | 2021-04-25 | 2021-07-13 | 湖南大学 | Safe and reliable welding-free closed flower basket type adjusting pull rod |
| CN114100093A (en) * | 2021-11-09 | 2022-03-01 | 杭州电子科技大学 | Threading device for badminton racket |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113107182A (en) * | 2021-04-25 | 2021-07-13 | 湖南大学 | Safe and reliable welding-free closed flower basket type adjusting pull rod |
| CN114100093A (en) * | 2021-11-09 | 2022-03-01 | 杭州电子科技大学 | Threading device for badminton racket |
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Application publication date: 20120718 |