CN113236711B - End connection for a steel cord and method of making a steel cord end connection - Google Patents
End connection for a steel cord and method of making a steel cord end connection Download PDFInfo
- Publication number
- CN113236711B CN113236711B CN202110483087.2A CN202110483087A CN113236711B CN 113236711 B CN113236711 B CN 113236711B CN 202110483087 A CN202110483087 A CN 202110483087A CN 113236711 B CN113236711 B CN 113236711B
- Authority
- CN
- China
- Prior art keywords
- wire rope
- connecting piece
- steel wire
- wall
- protrusion
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
- F16G11/02—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with parts deformable to grip the cable or cables; Fastening means which engage a sleeve or the like fixed on the cable
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ropes Or Cables (AREA)
Abstract
The end connecting piece for the steel wire rope comprises a cylindrical connecting piece body and a protrusion formed on the inner wall of the connecting piece body, and is simple in structure and capable of forming the protrusion on the cylindrical inner wall of the connecting piece body so as to form tooth-shaped meshing fit with the steel wire rope in the connecting process, and therefore the connecting strength is improved; and, this connecting piece is the tube-shape, only needs to cup joint on wire rope's outer wall, and restraint through withhold machine is pressed alright completion and is connected, and the connected mode is simple, and production efficiency is high.
Description
Technical Field
The invention belongs to the technical field of steel wire rope connection, and particularly relates to a steel wire rope end connecting piece and a steel wire rope end joint method.
Background
Steel wire ropes are widely used in fields such as mines, metallurgy, chemical industry, ports and industrial and mining enterprises. The ends of the steel cord must be fixed during use. Because the steel wire rope is applied to the places in the aspects of lifting, lifting and winding, new requirements are provided for the connection and fixation of the steel wire rope, namely, the fixed strength of the end joint is greater than the tensile strength of the steel wire rope.
The commonly used fixing methods include a braiding method, a steel wire rope clamp fixing, a sleeve lead-filled fixing and the like. In the above-mentioned fixing method by knitting method, the operation is complicated and the efficiency is low, and it is difficult to achieve the high standard strength requirement. And the strength of the end joint fixed by the steel wire rope clamp is difficult to ensure. The sleeve is filled with lead, professional high-pressure press equipment and corresponding dies are needed in the pressing process, enterprises are limited to make the wire rope end connector in a self-made mode to a large extent, and particularly the production of connectors with different specifications and sizes is difficult to improve.
Therefore, it is required to invent an end connector for a wire rope and a method of end jointing a wire rope for securing a connection strength while improving a production efficiency.
Disclosure of Invention
The present invention has been made keeping in mind some or all of the above problems occurring in the prior art, and an object of the present invention is to provide an end connector for a steel cord and a method of connecting an end of a steel cord. The end connecting piece for the steel wire rope is simple in structure, and can form a protrusion on the cylindrical inner wall of the end connecting piece so as to form tooth-shaped snap fit with the steel wire rope in the connecting process, so that the connecting strength is improved. And, this connecting piece is the tube-shape, only needs to cup joint on wire rope's outer wall, and restraint through withhold machine is pressed alright completion and is connected, and the connected mode is simple, and production efficiency is high.
According to an aspect of the present invention, there is provided an end connector for a steel wire rope, comprising a connector body for the steel wire rope to pass through, the connector body being cylindrical, and a protrusion formed on an inner wall of the connector body, the protrusion being for forming a snap connection with the steel wire rope after being constrained by a crimper.
In one embodiment, a circumferentially extending annular groove is provided on the inner wall of the connector body, the protrusion being formed outside the annular groove.
In one embodiment, a plurality of the ring grooves are axially spaced on the inner wall of the connector body, and the cross-sectional area of the protrusion is gradually reduced in a direction from the outer wall to the inner wall.
In one embodiment, the magnitude of the reduction in the cross-sectional area of the protrusions located at the axial middle is large relative to the magnitude of the reduction in the cross-sectional area of the protrusions located at both axial sides.
In one embodiment, the cross-section of the protrusions at the axial middle is configured as a triangle, and the cross-section of the protrusions at both axial sides is configured as a trapezoid.
In one embodiment, a rotating thread is provided on the inner wall of the protrusion.
According to another aspect of the present invention, there is provided a method for connecting ends of a steel wire rope, wherein after the ends of the steel wire rope are inserted into the inner cavity of the connector body, the connector is pressed by a crimping machine for forming the steel wire rope by crimping.
In one embodiment, the bundling process is performed in stages, each bundling stroke being 0.5-3 mm.
In one embodiment, the stroke of the beam pressure is progressively decreased during the phasing of the beam pressure.
In one embodiment, the end of the steel wire rope protrudes 2-3 mm from the connecting piece, and the total stroke is 3-8 mm during the bundling process until the steel wire rope is shrunk and deformed to the selected mould model of the withholding machine.
Compared with the prior art, the invention has the advantages that: the connecting piece is provided with the tubular connecting piece body, only needs to be sleeved on the outer wall of the steel wire rope in the connecting process, is simple in connecting mode, can be formed by bundling through a crimping machine, and is low in requirement on equipment, so that the production efficiency is very high. The inner wall of the connecting piece is provided with the protrusion, after the connection and the pressing are carried out, the protrusion and the steel wire rope form a toothed occlusion force, the steel wire rope and the connecting piece are effectively and tightly connected into a whole, and therefore the connecting strength of the connecting piece and the steel wire is improved, and the use requirement is met.
Drawings
Preferred embodiments of the present invention will be described in detail below with reference to the attached drawing figures, wherein:
figure 1 shows a cross-section of an end connection for a steel cord according to one embodiment of the invention.
The figures are not drawn to scale.
Detailed Description
In order to make the technical solutions and advantages of the present invention more apparent, the following describes exemplary embodiments of the present invention in further detail with reference to the accompanying drawings. It is clear that the described embodiments are only a part of the embodiments of the invention, and not an exhaustive list of all embodiments. And the embodiments and features of the embodiments may be combined with each other without conflict.
Embodiments of the present invention provide an end connector for a steel cord. As shown in fig. 1, an end connector 10 for a steel wire rope includes a connector body 1 and a protrusion 2. Wherein, the connecting piece body 1 is the tube-shape for wrap up wire rope. The protrusions 2 are formed on the inner wall of the coupler body 1. In the use, wire rope's one end inserts in the inner chamber of connecting piece body 1, and the connected mode is simple. The steel wire rope and the connecting piece 10 can be formed by bundling and pressing through a crimping machine, and the requirement on equipment is low, so that the production efficiency is very high. In the binding and pressing process, the protrusion 2 and the steel wire rope can form a toothed occlusion force, so that the steel wire rope and the connecting piece 10 are effectively and tightly connected into a whole, the connection strength of the connecting piece 10 and the steel wire is improved, and the use requirement is met.
In one embodiment, a circumferentially extending annular groove 3 is provided on the inner wall of the connector body 1. By providing the ring groove 3, the protrusion 2 is formed outside the ring groove 3. The connecting piece 10 with the structure has simple structure, easy processing and convenient realization.
A plurality of ring grooves 3 are axially arranged on the inner wall of the connecting piece body 1 at intervals. And, the sectional area of the protrusion 2 is gradually reduced in a direction from the outer wall to the inner wall. For example, the sectional shape of the protrusion 2 may be trapezoidal, triangular, or the like. In fig. 1 an embodiment is shown in which the protrusions 2 are trapezoidal in cross-section. This arrangement makes the inner wall end of the protrusion 2 more easily deformed during the crimping process to have a stronger engagement with the wire rope. Of course, in the present application, the protrusion 2 is not limited to the above-described shape, and for example, the protrusion 2 may also be square, or the protrusion 2 may be configured in a spiral shape on the inner wall of the connector body 1.
In a specific embodiment, the magnitude of the reduction in the cross-sectional area of the protrusions 2 located at the axial middle is large relative to the magnitude of the reduction in the cross-sectional area of the protrusions 2 located at both axial sides. For example, the protrusions 2 are three, the cross section of the protrusion 2 located at the middle in the axial direction is configured as a triangle, and the cross sections of the protrusions 2 located at both sides in the axial direction are configured as a trapezoid. In the bundling and pressing process, the protrusion 2 in the middle has stronger deformation capacity, forms relatively larger engaging force with the steel wire rope, stabilizes the position of the steel wire rope and prevents the steel wire rope from being pulled out. Meanwhile, the contact area between the protrusions 2 on the two sides and the steel wire rope is large, so that not only is the occlusal force formed, but also a relatively large abutting friction force can be formed, the generated occlusal force in the middle is protected, and the stability of the steel wire rope is improved. This connection method can improve the connection strength of the steel wire rope and the connection body 10 as a whole.
In a preferred embodiment, a rotating thread (not shown in the figures) is provided on the inner wall of the protrusion 2. This arrangement can increase the friction between the inner wall of the connecting body 10 and the steel wire rope, thereby improving the bonding strength between the two. In addition, the connector 10 is a steel sleeve for easy press-forming to meet strength requirements. Of course, the connecting member 10 may be made of copper, aluminum or other materials according to the requirement of tensile strength.
The application also relates to a method of end fitting of a steel cord. Specifically, in the process of performing end joint of the steel wire rope, the end of the steel wire rope is inserted into the inner cavity of the connector body 1, and then the connector 10 is pressed by using a crimping machine for bundling and pressing. In the application, the buckling and pressing machine of the equipment for manufacturing the high-pressure hydraulic oil pipe joint is adopted, so that a special tool is avoided, and the application range of the method can be enlarged. In addition, the term "crimping" is used herein to refer to the pressing of the connector 10 in a manner that applies a uniform radial force to the annular cross-section to achieve a more uniform shrinkage plastic deformation effect.
The invention is described in detail by taking the manufacture of a connector of a steel wire rope with the model number of 6 multiplied by 19-20 as an example. The outer diameter of the connecting piece 10 is phi 40mm, and the minimum diameter of the inner hole is correspondingly matched with the outer diameter of the steel wire rope and is phi 20 mm. The axial length of the connecting piece 10 is more than or equal to 45 mm. The axial length of the connector 10 is increased, the tightening force after pressing is also increased, and the selection of the axial length of the connector 10 is generally changed in proportion to the radial dimension for ensuring the strength of the connection.
The invention adopts the characteristic that the die of the crimping machine has uniform shrinkage in the circumferential direction to carry out compression manufacturing on the connecting piece 10 of the steel wire rope. The outer diameter of the connecting piece 10 is phi 40mm, and the model of phi 36mm is selected by the mould of the crimping machine, so that the connecting piece 10 can be shrunk to phi 36 mm.
Installing a phi 36mm mould on the crimping machine, setting input relevant parameters, installing the connecting piece 10 at the end part of the steel wire rope, enabling the steel wire rope to slightly protrude out of the connecting piece 10 by 2-3 mm, then placing the steel wire rope into the mould, and starting to perform crimping. The beam pressing operation is performed step by step, and the beam pressing stroke is 0.5-3 mm each time. In addition, the stroke of the beam pressure is gradually decreased in the process of beam pressure. For example, for the connecting member 10 and the steel wire rope, the bundling is performed in three times, the first bundling stroke is 2mm, and the second bundling stroke and the third bundling stroke are both 1mm, until the whole bundling of phi 36mm is finally approached or reached.
After the bundling is completed, the steel wire rope needs to be subjected to a tension test. In the testing process, the hydraulic pump, the hydraulic oil cylinder and the related devices are pressed by hands, the steel wire rope fixed joint is detected, related data are obtained, and whether the bearing capacity of the pressing joint is larger than the tensile force using requirement of the hoisting equipment or not is determined according to calculation of the hoisting power of the field equipment and the like. In a field test, the outer diameter of the connecting piece 10 before compression joint is 40mm, the length of the connecting piece is 44mm, the outer diameter of the connecting piece after compression joint is 36.4mm, the length of the connecting piece is 47mm, the bearable tensile force in the test reaches 9571.92kg, and the effect is very good.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, the appended claims are intended to be construed to include preferred embodiments and all such changes and/or modifications as fall within the scope of the invention, and all such changes and/or modifications as are made to the embodiments of the present invention are intended to be covered by the scope of the invention.
Claims (7)
1. An end connector for steel wire rope, comprising:
a connecting piece body for a steel wire rope to pass through, the connecting piece body is cylindrical,
a protrusion formed on the inner wall of the connector body, the protrusion being used to form a snap connection with the wire rope after being constrained by a crimping machine,
wherein set up the annular that circumference extends on the inner wall of connecting piece body and be used for the outside of annular forms the protrusion, the annular is a plurality of and on the inner wall of connecting piece body axial interval formula sets up, in the direction from outer wall to inner wall, the cross-sectional area of protrusion reduces gradually, and is located axial centre the range that the cross-sectional area of protrusion reduces is big for being located axial both sides the range that the cross-sectional area of protrusion reduces.
2. An end connection for a steel cord according to claim 1, characterised in that the cross-section of the protrusions at the axial middle is configured as a triangle, while the cross-section of the protrusions at both axial sides is configured as a trapezoid.
3. An end connection for a steel cord according to claim 1 or 2, characterised in that a rotating thread is provided on the inner wall of the protrusion.
4. A method of end-piecing a steel wire rope, characterized in that after the end of the steel wire rope is inserted into the inner cavity of the connector body according to any one of claims 1 to 3, the connector is pressed by a crimping machine for the bundling.
5. A method of making a steel cord end fitting according to claim 4, characterised in that the bundling is performed in stages with each bundling stroke being 0.5-3 mm during the bundling press.
6. A method of making a steel cord end fitting according to claim 5 wherein the stroke of the crimping is progressively reduced in sequence during the crimping stage.
7. A method of making a steel cord end fitting according to any one of claims 4 to 6 wherein the ends of said steel cord of type 6 x 19 "20 protrude 2-3 mm beyond said connector and said connector 10 has an outer diameter of 40mm and an inner diameter of 20mm to match said steel cord for a total stroke of 4mm during crimping until said connector is shrunk and deformed to the selected die type of said crimper having a die type of 36 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110483087.2A CN113236711B (en) | 2021-04-30 | 2021-04-30 | End connection for a steel cord and method of making a steel cord end connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110483087.2A CN113236711B (en) | 2021-04-30 | 2021-04-30 | End connection for a steel cord and method of making a steel cord end connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113236711A CN113236711A (en) | 2021-08-10 |
| CN113236711B true CN113236711B (en) | 2022-09-02 |
Family
ID=77131886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110483087.2A Active CN113236711B (en) | 2021-04-30 | 2021-04-30 | End connection for a steel cord and method of making a steel cord end connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113236711B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3573283D1 (en) * | 1984-03-26 | 1989-11-02 | Harumoto Iron Works Co | Armor for bridge cable |
| JP2002168301A (en) * | 2000-11-30 | 2002-06-14 | Mitsuboshi Belting Ltd | Toothed belt |
| CN1611439A (en) * | 2003-10-30 | 2005-05-04 | 德马格起重机及部件有限公司 | Releasable fastening device of a cable at a drum |
| AU2011101572A4 (en) * | 2010-02-26 | 2012-01-12 | Bekaert Wire Ropes Pty Ltd | Dragline rope ferrule |
| CN104006116A (en) * | 2014-06-10 | 2014-08-27 | 无锡通用钢绳有限公司 | Anti-slip steel wire rope connector |
| WO2015083214A1 (en) * | 2013-12-02 | 2015-06-11 | 東綱橋梁株式会社 | Rope end-fastening method, rope with end fastener, and end fitting for use in rope end-fastening method |
| CN206206498U (en) * | 2016-10-18 | 2017-05-31 | 广东坚宜佳五金制品有限公司 | Cable attachment |
| CN208117724U (en) * | 2018-02-23 | 2018-11-20 | 中国神华能源股份有限公司 | Pulling attachment |
| CN209743483U (en) * | 2019-02-27 | 2019-12-06 | 佛山市丰力工业皮带有限公司 | High-precision synchronous belt |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3344487C1 (en) * | 1983-12-06 | 1988-09-08 | Rud-Kettenfabrik Rieger & Dietz Gmbh U. Co, 7080 Aalen | Tensioning device for tension cords, in particular chains or belts |
| CN87104784A (en) * | 1987-07-11 | 1988-05-18 | 西北工业大学 | Extruding technique of high strength wire-rope joints |
| US5347689A (en) * | 1993-06-08 | 1994-09-20 | E. J. Brooks Company | Reusable bolt seal |
| CH687221A5 (en) * | 1993-12-14 | 1996-10-15 | Jakob Ag | Automatic clamping device for wire rope or round profile |
| US20030037417A1 (en) * | 2001-08-23 | 2003-02-27 | Yi-Chin Shen | Structure rope buckle |
| AU2002952900A0 (en) * | 2002-11-25 | 2002-12-12 | Vsl Prestressing (Aust) Pty Ltd | Protective device |
| CN1299024C (en) * | 2003-08-01 | 2007-02-07 | 东芝电梯株式会社 | Elevator steel rope connecton and its cold-extrusion shaping method and cold-extrusion device |
| CA2486086A1 (en) * | 2004-10-26 | 2006-04-26 | Alan Stevens | Adjustable bungee cord |
| JP5376554B2 (en) * | 2007-12-26 | 2013-12-25 | 独立行政法人労働安全衛生総合研究所 | Scaffolding seat mounting structure for scaffolding |
| CN202056247U (en) * | 2011-05-12 | 2011-11-30 | 永煤集团股份有限公司新桥煤矿 | Steel wire rope connector for scraper |
| CN103758926B (en) * | 2014-01-23 | 2016-04-20 | 宁波市鄞州五乡伟有机电配件厂 | A kind of quick connector for cable |
| CN106457428B (en) * | 2014-05-27 | 2019-09-27 | 贝卡尔特公司 | For carrying the metal sleeve of the abrasive material of saw pearl in saw cord |
| CN204825484U (en) * | 2015-06-08 | 2015-12-02 | 中国空气动力研究与发展中心高速空气动力研究所 | Single bayonet multipurpose wire rope that withholds |
| CN106219357B (en) * | 2016-07-22 | 2018-09-14 | 山东泰安煤矿机械有限公司 | The rope Locking device of well lifter suspension arrangement is erect for mine |
| CN209369807U (en) * | 2018-11-05 | 2019-09-10 | 中国神华能源股份有限公司 | Protection sleeve pipe for rope of pulling back |
| CN210397590U (en) * | 2019-06-11 | 2020-04-24 | 中铁建工集团有限公司 | Steel wire rope fastening device for building construction |
| CN210423578U (en) * | 2019-07-22 | 2020-04-28 | 佛山市丰力工业皮带有限公司 | High-strength industrial belt |
| CN112482222A (en) * | 2020-11-16 | 2021-03-12 | 上海浦江缆索股份有限公司 | Main cable strand with zinc-aluminum-magnesium alloy coating steel wire and assembling method thereof |
-
2021
- 2021-04-30 CN CN202110483087.2A patent/CN113236711B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3573283D1 (en) * | 1984-03-26 | 1989-11-02 | Harumoto Iron Works Co | Armor for bridge cable |
| JP2002168301A (en) * | 2000-11-30 | 2002-06-14 | Mitsuboshi Belting Ltd | Toothed belt |
| CN1611439A (en) * | 2003-10-30 | 2005-05-04 | 德马格起重机及部件有限公司 | Releasable fastening device of a cable at a drum |
| AU2011101572A4 (en) * | 2010-02-26 | 2012-01-12 | Bekaert Wire Ropes Pty Ltd | Dragline rope ferrule |
| WO2015083214A1 (en) * | 2013-12-02 | 2015-06-11 | 東綱橋梁株式会社 | Rope end-fastening method, rope with end fastener, and end fitting for use in rope end-fastening method |
| CN104006116A (en) * | 2014-06-10 | 2014-08-27 | 无锡通用钢绳有限公司 | Anti-slip steel wire rope connector |
| CN206206498U (en) * | 2016-10-18 | 2017-05-31 | 广东坚宜佳五金制品有限公司 | Cable attachment |
| CN208117724U (en) * | 2018-02-23 | 2018-11-20 | 中国神华能源股份有限公司 | Pulling attachment |
| CN209743483U (en) * | 2019-02-27 | 2019-12-06 | 佛山市丰力工业皮带有限公司 | High-precision synchronous belt |
Non-Patent Citations (2)
| Title |
|---|
| Song Jianjun ; Gao Dijun.Fundamental Principles and Debugging of Siemens Voltage Injection 100% Stator Ground Protection with 20 Hz.《Electric Power Science and Engineering》.2011, * |
| 吊斗铲回拉钢丝绳使用周期延长;李雪飞;《黑龙江科技信息》;20131015;第107页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113236711A (en) | 2021-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2477816C2 (en) | Single integral radially crumpled snap ring, and its manufacturing method | |
| US10221523B2 (en) | Multi-pass crimp collar for a looped cable | |
| US7770429B2 (en) | Method for producing a coupling on a pipe and device for producing said coupling | |
| EP2786056B1 (en) | Crimp connection arrangement for pressurised pipes | |
| EP2666561B1 (en) | Method for producing tooth profile component, and device for producing tooth profile component | |
| KR100739891B1 (en) | Joint for spiral pipe and connecting method | |
| CN102052533B (en) | Hose clip | |
| CN111853385B (en) | Blunt tooth ring, pipe fitting for connecting metal pipe by high-pressure-resistant compression joint and processing method of pipe fitting | |
| US3861811A (en) | Ferrules on rope or strand | |
| CA2172267C (en) | Swaging apparatus and method | |
| CN113236711B (en) | End connection for a steel cord and method of making a steel cord end connection | |
| WO2003050442A2 (en) | End fitting for tubular members and method of applying same | |
| JP2017074614A (en) | Molding method of flange | |
| JP6027783B2 (en) | Junction structure | |
| EA005052B1 (en) | End fitting for tubular members and method of applying same | |
| KR100394852B1 (en) | Jointing structure of press type pipe joint | |
| EP2196713A1 (en) | Device, method and kit of parts for forming a press-fit connection with a tube | |
| CN102957002B (en) | For the swaged forging connector of the tension state of cable strengthened | |
| JP2015040444A (en) | Joint structure for reinforcing bar and method for forming joint structure of reinforcing bar | |
| JP4711048B2 (en) | Mounting ring manufacturing method | |
| CN113186905A (en) | Precast concrete connecting piece and precast concrete pile | |
| CN113695472B (en) | Method for manufacturing hose connector and method for manufacturing hose assembly | |
| CN110185198A (en) | A kind of fixing end anchorage and preparation method thereof of multilayer steel wire structural steel twisted wire | |
| CN112536333B (en) | Connecting pipe and processing method thereof | |
| KR101432070B1 (en) | Structure of press type metal pipe joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |