CN108221418B - A kind of wirerope and its production technology - Google Patents
A kind of wirerope and its production technology Download PDFInfo
- Publication number
- CN108221418B CN108221418B CN201810327707.1A CN201810327707A CN108221418B CN 108221418 B CN108221418 B CN 108221418B CN 201810327707 A CN201810327707 A CN 201810327707A CN 108221418 B CN108221418 B CN 108221418B
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- China
- Prior art keywords
- round steel
- wire
- screw thread
- wirerope
- hand
- 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.)
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Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/18—Grommets
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/38—Wires; Tubes
Abstract
The invention discloses a kind of wirerope and its production technologies, are related to lifting field, solve the problems, such as that existing wirerope can not be according to itself tensioned state of load different adjustment；Its key points of the technical solution are that include two strand wires being twisted by more steel wires, be respectively fixedly connected with two strand wire one end connector, the hand of spiral is opposite on two connectors connection screw thread and the adjusting set being set on connector are set；Offered in adjusting set two sections respectively with the mutually matched adjusting screw thread of connection screw thread on two connectors；The production technology of the wirerope is the following steps are included: (1) round steel pickling；(2) Zinc phosphating is handled；(3) undergauge；(4) zinc-plated processing；(5) stock is twisted；(6) rope is closed；(7) it cuts off；(8) wire line hitch is knitted；(9) external threading；(10) connector is installed；(11) interior screw thread, wirerope carry out using process in can be according to the tensioned state of load bearing different adjustment itself.
Description
Technical field
The present invention relates to lifting fields, more specifically, it is related to a kind of wirerope and its production technology.
Background technique
Wirerope is that mechanical property and the satisfactory steel wire of geometric dimension are twisted together according to certain rules
Helical form steel tendon, wirerope have steel wire, wire rope core and grease composition.Wirerope is first to be twisted stock by multilayer steel wire, then with rope
Centered on core, helically wound rope is twisted by certain amount stock.Wirerope have intensity it is high, from the spy of heavy and light and stable working
Point.
Wirerope has also obtained very extensive application in construction projects, is mainly used to be fixed and hold with pulling force
Carry, wirerope both ends are both provided with wire line hitch, convenient for the both ends of wirerope are fixed, but existing wirerope into
In the process of enforcement, directly both ends are fixed for wirerope, and in the process to work, wirerope itself has
Certain elasticity, but because loaded and wirerope this body length limitation, cause wirerope carrying out using often
Often the tensioned state of wirerope can not can be adjusted, how to be used in more relaxation or the state excessively tightened
When the tensioned state of wirerope be adjusted be a problem to be solved according to the difference of load.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of wirerope and its production technology,
The tensioned state of wirerope can be adjusted in the process that wirerope uses.
To achieve the above object, the present invention provides the following technical scheme that a kind of wirerope, including two by more steel wires
The strand wire that is twisted, be respectively fixedly connected with two strand wire one end connector, the hand of spiral is set on two connectors
Opposite connection screw thread and the adjusting set being set on connector；
Offered in adjusting set two sections respectively with the mutually matched adjusting screw thread of connection screw thread on two connectors.
By using above-mentioned technical proposal, when rotating adjusting set, due to the spiral of the connection screw thread on two strand wires
It is contrary, enable adjusting set that two strand wires are tensed or loosened simultaneously, wirerope is carried according to receiving
The difference of lotus adjusts itself length, so that the tensioned state to wirerope is adjusted.
The present invention is further arranged to: the strand wire is provided with wire line hitch away from one end of connector.
By using above-mentioned technical proposal, it is convenient for consolidating wirerope by wire line hitch by setting wire line hitch
It is fixed.
The present invention is further arranged to: being arranged on the outside of the adjusting set in polygon.
By using above-mentioned technical proposal, by the way that polygon will be arranged on the outside of adjusting set, convenient for manpower to adjusting set
It is rotated, consequently facilitating the tensioned state to wirerope is adjusted.
In view of the deficienciess of the prior art, it is another object of the present invention to provide a kind of production works of wirerope
Skill, using the wirerope of technique production convenient for the tensioned state of wirerope is adjusted in use, the production work
Skill the following steps are included:
(1) round steel pickling: pickling processes are carried out to round steel using hydrochloric acid solution, the rust on round steel surface is removed and rolls
Skin；Carrying out pickling is that round steel is successively carried out pickling processes in the hydrochloric acid solution that concentration gradually rises；It can reduce in this way
To the time that consumes and can reduce round steel and impregnated in single concentration hydrochloric acid of hydrochloric acid in acid cleaning process；
(2) Zinc phosphating is handled: the round steel after washing is terminated is put into Zinc phosphating solution and carries out phosphorus to round steel
Change processing；The surface of round steel is made to obtain one layer of phosphate film not soluble in water by phosphorating treatment, thus to a certain degree
The upper antirust ability for improving wirerope；
(3) undergauge: carrying out undergauge for round steel, so that the diameter of round steel reaches 3.0mm；Undergauge is needed hand-drawn wire and is returned
Fire operation successively carries out and continues multiple groups, until the diameter of round steel reaches 3.0mm；The operation of hand-drawn wire and tempering step
It is rapid as follows:
A, hand-drawn wire: by round steel by diameter be less than round steel die hole, when round steel passes through die hole the shape of round steel and
Size can change according to the shape and size of die hole；
B, be tempered: the round steel after hand-drawn wire is handled is electrically heated to 650 DEG C, and keeps the temperature 50min；Then to round steel into
Row water cooling causes 40 DEG C；
Repeat hand-drawn wire and tempering operation, tempering can restore the internal structure of the round steel destroyed by hand-drawn wire, prevent
It only carries out pulling off round steel when hand-drawn wire again；
(4) zinc-plated processing: the round steel that undergauge obtains, which is put into zinc pot, carries out zinc-plated, the temperature control of zinc pot when zinc-plated
At 450 DEG C；
(5) it twists stock: round steel and wire rope core being put into strander and carry out twirl stock；
(6) close rope: the material that twisting stock terminates is sent in crank closer and carries out conjunction rope, finally obtains strand wire；
(7) cut off: the length of strand wire as needed cuts off strand wire using cutting machine；
(8) it knits wire line hitch: knitting wire line hitch in one end of strand wire, and hitch will be connected using buckle machine
It is pressed on strand wire for wire line hitch to be fixed；
(9) external threading: using lathe by the outside vehicle connection screw thread of connector one end, and the connection spiral shell of two connectors
The hand of spiral of line is opposite；
(10) connector is installed: being withheld connector in strand wire using buckle machine) away from one end of wire line hitch, and
And the connection screw thread hand of spiral on two strand wires is opposite；
(11) interior screw thread: the opposite adjusting screw thread of two sections of hands of spiral of getting on the bus inside adjusting set, and two adjust spiral shell
Line cooperates with the connection screw thread on two strand wires respectively.
By using above-mentioned technical proposal, using the production of above-mentioned production technology wirerope carry out using process in
The length of wirerope can be adjusted by rotating adjusting set, so as to the service load according to wirerope to wirerope
Tensioned state be adjusted.
The present invention is further arranged to: being washed after the step (1) to round steel, concrete operation step are as follows: will be sour
The round steel washed after terminating is cleaned with clear water, until round steel cleans up.
By using above-mentioned technical proposal, round steel is cleaned up to the hydrochloric acid that can remove round steel surface, improve round steel into
The quality of row Zinc phosphating processing.
The present invention is further arranged to: round steel constantly being lifted and is put into clear water when the round steel cleans.
By using above-mentioned technical proposal, round steel is constantly lifted from clear water and is put down convenient for quickly by round steel table
The hydrochloric acid in face cleans up.
The present invention is further arranged to: washing after the step (2) to round steel, round steel is cleaned up；
By using above-mentioned technical proposal, the Zinc phosphating solution on round steel surface can be cleaned up, convenient for round steel into
Row operates in next step.
The present invention is further arranged to: the round steel needs to dry the moisture on round steel surface after being cleaned.
It can prevent round steel from carrying out by drying the moisture on round steel surface by using above-mentioned technical proposal
The moisture on round steel surface impacts undergauge operation when undergauge operates.
In conclusion the present invention have the advantages that compared with the prior art the present invention by setting adjusting set with
And it two opposite connection screw threads of the hand of spiral on two strand wires are set can adjust the length of wirerope by rotation adjusting set
Degree, so as to the tensioned state of the different adjustment wirerope for the load born according to wirerope.
Detailed description of the invention
Fig. 1 is the axonometric drawing of the complete structure of embodiment；
Fig. 2 is the schematic diagram that embodiment embodies connection screw thread；
Fig. 3 is that embodiment embodies the schematic diagram for adjusting screw thread.
In figure: 1, strand wire；11, wire line hitch；2, connector sleeve；3, connector；31, connection screw thread；4, adjusting set；
41, screw thread is adjusted.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.The wherein identical appended drawing reference of identical components
It indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to it is attached
Direction in figure, word " bottom surface " and " top surface ", "inner" and "outside" are referred respectively to towards or away from geometric center of specific component
Direction.
Embodiment one: a kind of wirerope includes two strand wires 1 congealed by steel wire strand referring to attached drawing 1 and is fixed
It is connected to the connector 3 of 1 one end of strand wire；Strand wire 1 is coiled into wire line hitch 11, steel relative to the other end of connector 3
The end that cord stock 1 is coiled into wire line hitch 11 is turned down towards 3 one end of connector of strand wire 1, and passes through the connection of setting
Set 2 is fixed；Two connectors 3 are linked together by adjusting set 4, the outside of adjusting set 4 in polygon setting (such as:
Regular hexagon), convenient for being rotated to adjusting set 4.
Referring to attached drawing 2, connector 3 offers connection screw thread 31, and two steel wires on the outside of one end of wire line hitch 11
The hand of spiral of connection screw thread 31 on rope strand 1 is opposite.
Referring to attached drawing 3, two groups of adjusting screw threads 41, the hand of spiral phase of two groups of adjusting screw threads 41 are offered on the inside of adjusting set 4
Instead and respectively cooperate with the connection screw thread 31 on two strand wires 1.
Adjusting set 4 can be screwed and be loosened to two connectors 3 simultaneously in the process of rotation, to adjust steel wire
The length of rope.
The wirerope carry out using process in, two are connected to strand wire 1 by connector 3 and adjusting set 4
Together, and by wire line hitch 11 wirerope is fixed, and can be according to wirerope in the process used
Rotation adjusting set 4 length of wirerope is adjusted, so that wirerope is in load suffered by length and wirerope
One suitable tensioned state.
Embodiment two: the production technology of wirerope mainly comprises the steps that
(1) round steel pickling: pickling processes are carried out to round steel using hydrochloric acid solution, the rust on round steel surface is removed and rolls
Skin；Carrying out pickling is that round steel is successively carried out pickling processes in the hydrochloric acid solution that concentration gradually rises；It can reduce in this way
To the time that consumes and can reduce round steel and impregnated in single concentration hydrochloric acid of hydrochloric acid in acid cleaning process；
(2) wash: the round steel after pickling is terminated is cleaned with clear water, and pass through in the process of cleaning by
Round steel constantly lifts and is put into clear water, accelerates the speed cleaned to round steel；
(3) Zinc phosphating is handled: the round steel after washing is terminated is put into Zinc phosphating solution and carries out phosphorus to round steel
Change processing；The surface of round steel is made to obtain one layer of phosphate film not soluble in water by phosphorating treatment, thus to a certain degree
The upper antirust ability for improving wirerope；
(4) wash: the round steel that phosphorating treatment is terminated is put into clear water and is cleaned, by the zinc system phosphorus on round steel surface
Change liquid to clean up, raw material can constantly be lifted and is put into clear water in the process of cleaning, to improve round steel
Cleaning speed；
(5) it dries: being dried the water on the round steel surface cleaned up using hot wind；
(6) undergauge: carrying out undergauge for round steel, so that the diameter of round steel reaches 3.0mm；Undergauge is needed hand-drawn wire and is returned
Fire operation successively carries out and continues multiple groups, until the diameter of round steel reaches 3.0mm；The operation of hand-drawn wire and tempering step
It is rapid as follows:
A, hand-drawn wire: by round steel by diameter be less than round steel die hole, when round steel passes through die hole the shape of round steel and
Size can change according to the shape and size of die hole；
B, be tempered: the round steel after hand-drawn wire is handled is electrically heated to 650 DEG C, and keeps the temperature 50min；Then to round steel into
Row water cooling causes 40 DEG C；
Repeat hand-drawn wire and tempering operation, tempering can restore the internal structure of the round steel destroyed by hand-drawn wire, prevent
It only carries out pulling off round steel when hand-drawn wire again；
(7) zinc-plated processing: the round steel that undergauge obtains, which is put into zinc pot, carries out zinc-plated, the temperature control of zinc pot when zinc-plated
At 450 DEG C；
(8) it twists stock: round steel and wire rope core being put into strander and carry out twirl stock；
(9) close rope: the material that twisting stock terminates is sent in crank closer and carries out conjunction rope, finally obtains strand wire 1；
(10) cut off: the length of strand wire 1 as needed cuts off strand wire 1 using cutting machine；
(11) it knits wire line hitch 11: knitting wire line hitch 11 in one end of strand wire 1, and will even using buckle machine
Female connector 2 is withheld on strand wire 1 for wire line hitch 11 to be fixed；
(12) external threading: using lathe by the outside vehicle connection screw thread 31 of 3 one end of connector, and two connectors 3
The hand of spiral of connection screw thread 31 is opposite；
(13) connector 3 is installed: being withheld connector 3 in strand wire 1 using buckle machine) deviate from the one of wire line hitch 11
End, and 31 hand of spiral of connection screw thread on two strand wires 1 is opposite；
(14) interior screw thread: the opposite adjusting screw thread 41 of two sections of hands of spiral of getting on the bus inside adjusting set 4, and two are adjusted
Screw thread 41 cooperates with the connection screw thread 31 on two strand wires 1 respectively.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of producing technique of steel cable, it is characterised in that: the production technology the following steps are included:
(1) round steel pickling: pickling processes are carried out to round steel using hydrochloric acid solution, the rust on round steel surface is removed and rolls skin；Into
Row pickling is that round steel is successively carried out pickling processes in the hydrochloric acid solution that concentration gradually rises；Pickling can be reduced in this way
The time that consumes and can reduce round steel single concentration hydrochloric acid in impregnate of the Cheng Dangzhong to hydrochloric acid；
(2) Zinc phosphating is handled: the round steel after washing is terminated is put into Zinc phosphating solution and is carried out at phosphatization to round steel
Reason；The surface of round steel is made to obtain one layer of phosphate film not soluble in water by phosphorating treatment, to mention to a certain extent
The antirust ability of high wirerope；
(3) undergauge: carrying out undergauge for round steel, so that the diameter of round steel reaches 3.0mm；Undergauge is needed hand-drawn wire and tempering behaviour
Multiple groups are successively carried out and continue, until the diameter of round steel reaches 3.0mm；Hand-drawn wire and the operating procedure of tempering are such as
Under:
A, round steel hand-drawn wire: is less than to the die hole of round steel, the shape and size of round steel when round steel passes through die hole by diameter
It can be changed according to the shape and size of die hole；
B, be tempered: the round steel after hand-drawn wire is handled is electrically heated to 650 DEG C, and keeps the temperature 50min；Then water is carried out to round steel
It is cold to cause 40 DEG C；
Repeat hand-drawn wire and tempering operation, tempering can restore the internal structure of the round steel destroyed by hand-drawn wire, prevent again
Round steel is pulled off when secondary progress hand-drawn wire；
(4) zinc-plated processing: the round steel that undergauge obtains, which is put into zinc pot, to carry out zinc-plated, and the temperature control of zinc pot exists when zinc-plated
450℃；
(5) it twists stock: round steel and wire rope core being put into strander and carry out twirl stock；
(6) close rope: the material that twisting stock terminates is sent in crank closer and carries out conjunction rope, finally obtains strand wire (1)；
(7) cut off: the length of strand wire (1) as needed cuts off strand wire (1) using cutting machine；
(8) wire line hitch (11) are knitted: knits wire line hitch (11) in one end of strand wire (1), and will using buckle machine
Connector sleeve (2) is withheld on strand wire (1) for wire line hitch (11) to be fixed；
(9) external threading: using lathe by the outside vehicle connection screw thread (31) of connector (3) one end, and two connectors (3)
The hand of spiral of connection screw thread (31) is opposite；
(10) connector (3) are installed: are withheld connector (3) in strand wire (1) away from wire line hitch (11) using buckle machine
One end, and connection screw thread (31) hand of spiral on two strand wires (1) is opposite；
(11) interior screw thread: the opposite adjusting screw thread (41) of two sections of hands of spiral of getting on the bus inside adjusting set (4), and two are adjusted
Screw thread (41) cooperates with the connection screw thread (31) on two strand wires (1) respectively；
The wirerope includes two strand wires being twisted by more steel wires (1), is respectively fixedly connected in two strand wires (1)
The connector (3) of one end is arranged on two connectors (3) the opposite connection screw thread (31) of the hand of spiral and is set in connector
(3) adjusting set (4) on；
Offer in adjusting set (4) two sections respectively with the mutually matched adjusting screw thread of connection screw thread (31) on two connectors (3)
(41)。
2. a kind of producing technique of steel cable according to claim 1, it is characterised in that: the strand wire (1) is away from company
One end of connector (3) is provided with wire line hitch (11).
3. a kind of producing technique of steel cable according to claim 1, it is characterised in that: in more on the outside of the adjusting set (4)
The setting of side shape.
4. producing technique of steel cable according to claim 1, it is characterised in that: carried out after the step (1) to round steel
Washing, concrete operation step are as follows: the round steel after terminating pickling is cleaned with clear water, until round steel cleans up.
5. producing technique of steel cable according to claim 4, it is characterised in that: when the round steel is cleaned not by round steel
It is disconnected to lift and be put into clear water.
6. producing technique of steel cable according to claim 1, it is characterised in that: carried out after the step (2) to round steel
Washing, round steel is cleaned up.
7. producing technique of steel cable according to claim 6, it is characterised in that: the round steel needed after being cleaned by
The moisture on round steel surface is dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810327707.1A CN108221418B (en) | 2018-04-12 | 2018-04-12 | A kind of wirerope and its production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810327707.1A CN108221418B (en) | 2018-04-12 | 2018-04-12 | A kind of wirerope and its production technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108221418A CN108221418A (en) | 2018-06-29 |
| CN108221418B true CN108221418B (en) | 2019-07-02 |
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ID=62657691
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| CN201810327707.1A Active CN108221418B (en) | 2018-04-12 | 2018-04-12 | A kind of wirerope and its production technology |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826032A (en) * | 2019-04-09 | 2019-05-31 | 贵州钢绳股份有限公司 | A kind of resistance rotating wire rope and its manufacturing method |
| CN110924200A (en) * | 2019-11-26 | 2020-03-27 | 江苏赛福天钢索股份有限公司 | Steel wire rope online production line precision improving process |
| CN111142203B (en) * | 2019-12-26 | 2022-04-08 | 江苏英杰光缆科技有限公司 | Method for improving flexibility of optical cable |
| CN111101125B (en) * | 2019-12-26 | 2022-03-15 | 江苏英杰光缆科技有限公司 | Optical cable drawing method |
| CN111850811B (en) * | 2020-07-06 | 2022-03-11 | 东莞特大纺织科技有限公司 | Braided rope, braiding method thereof and braided product |
| CN112176749B (en) * | 2020-09-30 | 2023-07-14 | 江阴泰阳成索业有限公司 | Eye lifting appliance for pressing single-side end socket by steel rope and steel sleeve and preparation method |
| CN113863037B (en) * | 2021-08-22 | 2023-04-07 | 东营众腾金属制品有限公司 | Preparation process of stainless steel wire rope |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1123722A (en) * | 1995-08-14 | 1996-06-05 | 徐飞 | Process for high-strength prestressed steel wire |
| SE505081C2 (en) * | 1996-09-12 | 1997-06-23 | All Set Marine Lashing Ab | Screws and the use of such as a lashing rod to acid load |
| CH698304B1 (en) * | 2005-10-10 | 2009-07-15 | Fatzer Ag | Cable anchor, in particular for rockfall or avalanche prevention structures. |
| CN100569431C (en) * | 2007-02-15 | 2009-12-16 | 胡厚飞 | Pulling ware manufacture process and structure thereof |
| CN103089915A (en) * | 2011-10-29 | 2013-05-08 | 招远云帆五金机械有限公司 | Modified annular connector |
| CN203081339U (en) * | 2012-12-20 | 2013-07-24 | 辽宁石油机械制造有限公司 | Guy adjusting lead screw |
| CN104791418B (en) * | 2015-03-25 | 2017-01-18 | 广东坚朗五金制品股份有限公司 | Stay rope |
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