CN108500061B - Special-shaped roller core rod supporting machine - Google Patents
Special-shaped roller core rod supporting machine Download PDFInfo
- Publication number
- CN108500061B CN108500061B CN201810633770.8A CN201810633770A CN108500061B CN 108500061 B CN108500061 B CN 108500061B CN 201810633770 A CN201810633770 A CN 201810633770A CN 108500061 B CN108500061 B CN 108500061B
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- special
- swing arm
- shaped
- backing roll
- roller
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- 238000005096 rolling process Methods 0.000 claims abstract description 44
- 238000005299 abrasion Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
- B21B25/02—Guides, supports, or abutments for mandrels, e.g. carriages or steadiers; Adjusting devices for mandrels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a special-shaped roller core rod supporting machine which comprises a first swing arm (11), a second swing arm (12) and a third swing arm (13) which are sequentially distributed along the circumferential direction of a rolling axis (10), wherein one end of the first swing arm (11) is provided with a first special-shaped supporting roller (5), one end of the second swing arm (12) is provided with a second special-shaped supporting roller (6), one end of the third swing arm (13) is provided with a third special-shaped supporting roller (7), the first special-shaped supporting roller (5), the second special-shaped supporting roller (6) and the third special-shaped supporting roller (7) are identical, one end of the first special-shaped supporting roller (5) is a small-diameter end, and the other end of the first special-shaped supporting roller (5) is a large-diameter end. The special-shaped roller core rod supporting machine is used for completing the opening and closing of three supporting rollers by a hydraulic cylinder with controllable stroke, is used for clamping different core rods, is simple and exquisite in equipment mechanism, can ensure high concentricity with a rolling axis for core rods with different diameters, and is accurate and reliable, and quick in response.
Description
Technical Field
The invention relates to the field of rolling equipment, in particular to a special-shaped roller core rod supporting machine used between racks of a roller machine.
Background
For a continuous tube mill, a mandrel supporter is generally arranged between frames of a roller machine to guide and stabilize the mandrel so as to facilitate the advancing or retreating of the mandrel, thereby ensuring stable rolling, ensuring high centering of the mandrel and facilitating rolling quality of pierced billets. The mandrel supporting rollers commonly used on the mandrel supporting machine at present mainly comprise a wide roller and a narrow roller, and for the wide roller, the diameters of the two ends are equal, and the roller body is longer, as shown in figure 3; for a narrow roll, the roll body is shorter with equal diameters at both ends, as shown in fig. 5.
As shown in fig. 1 to 3, when the wide roller grips the small diameter mandrel 20, the backup rollers 21, 22, 23 grip around the mandrel, but the minimum diameter of the mandrel that can be gripped is limited due to the longer roller body. Of course, the large diameter mandrel bar 30 can be held well, as shown in fig. 2. For clamping smaller mandrels, narrow rolls with shorter roll bodies are generally used, as shown in fig. 4 and 5, but there is another problem that the narrow rolls are disadvantageous for large mandrels because the supporting rolls 31, 32 and 33 are clamped around the large diameter mandrel 30 with rounded sharp points, and the large mandrel is heavier, which is very likely to cause abrasion to the supporting rolls.
Disclosure of Invention
In order to solve the problem that the diameter range of the core rod which can be clamped by the existing core rod supporting machine is smaller. The invention provides a special-shaped roller core rod supporting machine, which is used for opening and closing three supporting rollers by a hydraulic cylinder with controllable stroke, is used for clamping different core rods, has simple and exquisite equipment mechanism, can ensure high concentricity with a rolling axis for core rods with different diameters, and is accurate and reliable and quick in response. Compared with the prior art, the mandrel supporting frame can be matched with smaller mandrels, and abrasion to the supporting roller is greatly reduced when the large mandrels are clamped.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a special-shaped roller plug supporting machine, including the first swing arm that distributes in proper order along the circumference of rolling axis, second swing arm and third swing arm, the one end of first swing arm is equipped with first special-shaped backing roll, the one end of second swing arm is equipped with the second special-shaped backing roll, the one end of third swing arm is equipped with the third special-shaped backing roll, first special-shaped backing roll, second special-shaped backing roll and third special-shaped backing roll are the same, the one end of first special-shaped backing roll is the path end, the other end of first special-shaped backing roll is the big diameter end, the diameter of the one end of first special-shaped backing roll is less than the diameter of the other end of first special-shaped backing roll, the figure that the side global of first special-shaped backing roll was cut by the plane that the central line of first special-shaped backing roll was located is two pitch arc lines, these two pitch angles are mirror images each other about the central line of first special-shaped backing roll, the path end of first special-shaped backing roll is towards first swing arm, the path end towards the second swing arm, the path end towards the third special-shaped backing roll, the one end of first special-shaped backing roll is the diameter end is the big diameter end, the one end of first special-shaped backing roll is the end, the diameter end is the diameter is the big diameter end, the one end of first swing arm, the one end of first special-shaped backing roll is less than the diameter of the swing roll, the one end is the special-shaped backing roll, the special-shaped backing roll is all can roll, the centre line is located to roll, the special-shaped backing roll is all roll.
The length of the first special-shaped supporting roller is 50-200 mm, the diameter of the small-diameter end of the first special-shaped supporting roller is 150-630 mm, and the diameter of the large-diameter end of the first special-shaped supporting roller is 200-800 mm.
The diameter of the first special-shaped supporting roller gradually decreases along the direction from the large diameter end of the first special-shaped supporting roller to the small diameter end of the first special-shaped supporting roller, and the central angle corresponding to the arc line is 25-40 degrees.
The special-shaped roller core rod supporting machine further comprises a frame, and the first swing arm, the second swing arm and the third swing arm are all hinged with the frame.
The hinge points of the first swing arm and the frame, the hinge points of the second swing arm and the frame and the hinge points of the third swing arm and the frame are all located on the same circle, and the circle center of the circle is located on the rolling axis.
The hinge points of the first swing arm and the frame, the hinge points of the second swing arm and the frame and the hinge points of the third swing arm and the frame are uniformly distributed along the circumferential direction of the rolling axis.
The first swing arm is hinged with the second swing arm through a first connecting rod, and the first swing arm is hinged with the third swing arm through a second connecting rod.
The special-shaped roller core rod supporting machine further comprises a support and a hydraulic cylinder, one end of the hydraulic cylinder is hinged with the support, the support is fixedly connected with the frame, and the other end of the hydraulic cylinder is hinged with the other end of the first swing arm.
The first swing arm is located the top of rolling axis, and the second swing arm is located the right side below of rolling axis, and the third swing arm is located the left side below of rolling axis.
The first special-shaped support roller is located at the upper right side of the rolling axis, the second special-shaped support roller is located at the lower side of the rolling axis, and the third special-shaped support roller is located at the upper left side of the rolling axis.
The beneficial effects of the invention are as follows: the special-shaped roller core rod supporting machine is driven by a hydraulic cylinder with controllable stroke to complete the opening and closing clamping actions of three supporting rollers, is used for clamping core rods with different diameters, has good mechanism synchronization, is concise and exquisite in equipment mechanism, is accurate, reliable and stable, and has quick action response. For the core rods with different diameters, the core rod supporting frame can ensure high concentricity with a rolling axis, and can meet the clamping requirement of smaller core rods, and for the large core rods, the core rods are clamped by the roller body in an arc mode, so that abrasion is greatly reduced, and the service life is longer. Under the condition of the same frame size, the diameter specification range of the mandrel clamping type mandrel of the mandrel supporting frame is large, and particularly smaller mandrels can be matched, so that the rolling quality of pierced billets is effectively ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic view of a prior art wide roller mandrel holder holding a small mandrel.
Fig. 2 is a schematic view of a prior art wide roller mandrel bar support machine holding a large mandrel bar.
Fig. 3 is a schematic diagram of a prior art wide roller.
Fig. 4 is a schematic view of a prior art narrow roll mandrel holder holding a large or small mandrel.
Fig. 5 is a schematic view of a prior art narrow roll.
Fig. 6 is a profiled backup roll according to the invention.
Fig. 7 is a special-shaped roll core rod supporting machine according to the present invention.
Fig. 8 is a schematic view of a special-shaped roll core rod supporting machine for clamping a small core rod according to the invention.
Fig. 9 is a schematic view of a large mandrel held by a special-shaped roll mandrel bar support machine according to the present invention.
1. A core rod; 2. a frame; 3. a support; 4. a hydraulic cylinder; 5. a first profiled backup roll; 6. a second profiled backup roll; 7. a third special-shaped support roller;
10. rolling the axis; 11. a first swing arm; 12. a second swing arm; 13. a third swing arm; 15. a first link; 16. a second link;
20. a small diameter mandrel; 21. a support roller; 22. a support roller; 23. a support roller;
30. a large diameter mandrel; 31. a support roller; 32. a support roller; 33. and (5) supporting rollers.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
The utility model provides a special-shaped roller plug supporting machine, including the first swing arm 11 that distributes in proper order along the circumference of rolling axis 10, second swing arm 12 and third swing arm 13, the one end of first swing arm 11 is equipped with first special-shaped backing roll 5, the one end of second swing arm 12 is equipped with second special-shaped backing roll 6, the one end of third swing arm 13 is equipped with third special-shaped backing roll 7, first special-shaped backing roll 5, second special-shaped backing roll 6 and third special-shaped backing roll 7 are the same, the one end of first special-shaped backing roll 5 is the path end, the other end of first special-shaped backing roll 5 is the path end, the diameter of the path end of first special-shaped backing roll 5 is less than the diameter of the big path end of special-shaped backing roll 1, the side global (also can be called the roll face) of first special-shaped backing roll 5 is by the plane (the plane that figure 6 is located), the figure that the plane is located by first special-shaped backing roll 5 is two pitch arc, the two pitch angles are mirror image each other about the central line of first special-shaped backing roll 5, the path end of first special-shaped backing roll 5 is the path end towards first swing arm 6, thereby the diameter end that the special-shaped backing roll 5 is the path end is towards first swing arm 6, the diameter end is the first swing arm 7, thereby the special-shaped backing roll 7 is located at the special-shaped backing roll 13, the diameter end is located at the first swing arm 13, the special-shaped backing roll 13 is located at the first swing arm 7, the diameter end is very little diameter 7, the centre gripping end is very little diameter at the first end is far towards the first swing arm 7, the first end, the centre joint 13, the special-shaped backing roll 13, the diameter end is can be, and so is shown in the special-shaped backing roll 13, the diameter is the special-shaped backing roll 13, and 10 is the diameter is.
In this embodiment, the first special-shaped supporting roller 5 is a flat roller, the length of the first special-shaped supporting roller 5 is 50 mm-200 mm, the diameter of the small diameter end of the first special-shaped supporting roller 5 is 150 mm-630 mm, and the diameter of the large diameter end of the first special-shaped supporting roller 5 is 200 mm-800 mm. Along the direction from the large diameter end of the first special-shaped supporting roller 5 to the small diameter end of the first special-shaped supporting roller 5, the diameter of the first special-shaped supporting roller 5 is gradually reduced, the central angle corresponding to the arc line is 25-40 degrees, and preferably, the central angle corresponding to the arc line is 30-35 degrees. Wherein, when the diameter range of the arc line is designed to be 100 mm-400 mm, the diameter of the arc line is slightly larger than that of the maximum core rod. For example, R100mm arc line, the range of the clamping core rod is 30 mm-195 mm, and the minimum is even 25mm. For example, R200mm arc line, the range of the clamping core rod is 60 mm-395 mm, and the minimum is even 25mm.
As shown in fig. 6, the end face of the large diameter end and the end face of the small diameter end of the first special-shaped supporting roller 5 divide fig. 6 into three areas, which are respectively on the left side of the large diameter end of the first special-shaped supporting roller 5, between the end face of the large diameter end of the first special-shaped supporting roller 5 and the small diameter end, on the right side of the small diameter end of the first special-shaped supporting roller 5, and the circle center corresponding to the arc line is located on the right side of the small diameter end of the first special-shaped supporting roller 5.
In this embodiment, the special-shaped roller core rod supporting machine further includes a frame 2, and the first swing arm 11, the second swing arm 12, and the third swing arm 13 are all hinged to the frame 2. The hinge point R1 of the first swing arm 11 and the frame 2, the hinge point R1 of the second swing arm 12 and the frame 2, and the hinge point R1 of the third swing arm 13 and the frame 2 are all located on the same circle C, and the center of the circle C is located on the rolling axis 10, as shown in fig. 7.
In the present embodiment, the hinge points R1 and R2 of the first swing arm 11 and the frame 2, the second swing arm 12 and the frame 2, and the third swing arm 13 and the frame 2 are uniformly distributed along the circumferential direction of the rolling axis 10. The included angles between the connecting lines of the hinging points R1, R2 and R3 and the rolling axis 10 are 120 degrees, namely the hinging point connecting lines B1, B2 and B3 are distributed at 120 degrees, as shown in fig. 7.
In the present embodiment, the first swing arm 11 is hinged to the second swing arm 12 through the first link 15, that is, both ends of the first link 15 are respectively hinged to the first swing arm 11 and the second swing arm 12. The first swing arm 11 is hinged with the third swing arm 13 through a second connecting rod 16, namely, two ends of the second connecting rod 16 are respectively hinged with the first swing arm 11 and the third swing arm 13, as shown in fig. 7.
In this embodiment, the special-shaped roller core rod supporting machine further comprises a support 3 and a hydraulic cylinder 4, one end of the hydraulic cylinder 4 is hinged to the support 3, the support 3 is fixedly connected with the frame 2, and the other end of the hydraulic cylinder 4 is hinged to the other end of the first swing arm 11. The first swing arm 11 is located above the rolling axis 10, the second swing arm 12 is located below the rolling axis 10 on the right, and the third swing arm 13 is located below the rolling axis 10 on the left. The first profiled support roll 5 is located above and to the right of the rolling axis 10, the second profiled support roll 6 is located below the rolling axis 10 and the third profiled support roll 7 is located above and to the left of the rolling axis 10, as shown in fig. 7.
For ease of understanding and description, the present invention is described in terms of absolute positional relationships, wherein the azimuth term "up" indicates an upper direction in fig. 7, "down" indicates a lower direction in fig. 7, "left" indicates a left direction in fig. 7, and "right" indicates a right direction in fig. 7. It is to be understood that the present invention uses the viewing angle of the reader reading the present invention. The above directional terms should not be construed or interpreted as limiting the scope of the invention.
In the invention, the bottom end of the hydraulic cylinder 4 is arranged on the support 3, and the support 3 is fixed on the frame 2; the cylinder head of the hydraulic cylinder 4 is hinged with the other end of the first swing arm 11, and the hydraulic cylinder 4 can drive the first swing arm 11 to swing around a hinge point R1; the second swing arm 12 swings around a hinge point R2, and one end of the second swing arm 12 is hinged with the middle part of the first swing arm 11 through a first connecting rod 15; the third swing arm 13 swings around a hinge point R3, and the other end of the third swing arm 13 is hinged with the middle part of the first swing arm 11 through a second connecting rod 16; the first special-shaped supporting roller 5 is arranged at the tail end of the first swing arm 11 and rotates around the rotation axis A1; the second special-shaped supporting roller 6 is arranged at the tail end of the second swing arm 12 and rotates around the rotation axis A2; the third special-shaped supporting roller 7 is arranged at the tail end of the third swing arm 13 and rotates around the rotation axis A3. When the hydraulic cylinder 4 stretches out and draws back to drive the first swing arm 11, the first special-shaped support roller 5, the second special-shaped support roller 6 and the third special-shaped support roller 7 are linked, so that the first special-shaped support roller 5, the second special-shaped support roller 6 and the third special-shaped support roller 7 synchronously open and close or scatter around the rolling axis 10, and the mandrel 1 is clamped and held.
Further, the large diameter end of the first special-shaped support roller 5 is offset, i.e., the plane thereof is away from the center line (rolling axis 10) of the mandrel 1, and the plane thereof is close to the center line (rolling axis 10) of the mandrel 1. The second and third profiled support rollers 6, 7 are arranged in the same way as the first profiled support roller 5.
When the hydraulic cylinder 4 stretches out, the first swing arm 11, the second special-shaped supporting roller 6 and the third special-shaped supporting roller 7 are pushed to rotate, so that the first special-shaped supporting roller 5, the second special-shaped supporting roller 6 and the third special-shaped supporting roller 7 are closed and close to the rolling axis 10, the opening degree is reduced, and the small-diameter mandrel 20 is held by the small-diameter mandrel, as shown in fig. 8; when the hydraulic cylinder 4 contracts, the first special-shaped support roller 5, the second special-shaped support roller 6 and the third special-shaped support roller 7 are pulled, so that the first special-shaped support roller 5, the second special-shaped support roller 6 and the third special-shaped support roller 7 are opened, the rolling axis 10 is far away, the opening degree is increased, and the large-diameter mandrel 30 is held by the mandrel, as shown in fig. 9.
The foregoing description of the embodiments of the invention is not intended to limit the scope of the invention, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the invention shall fall within the scope of the patent. In addition, the technical characteristics and technical scheme, technical characteristics and technical scheme can be freely combined for use.
Claims (8)
1. The utility model provides a special-shaped roller plug supporting machine, a serial communication port, this special-shaped roller plug supporting machine includes first swing arm (11) that distributes in proper order along the circumference of rolling axis (10), second swing arm (12) and third swing arm (13), the one end of first swing arm (11) is equipped with first special-shaped backing roll (5), the one end of second swing arm (12) is equipped with second special-shaped backing roll (6), the one end of third swing arm (13) is equipped with third special-shaped backing roll (7), first special-shaped backing roll (5), second special-shaped backing roll (6) and third special-shaped backing roll (7) are the same, the one end of first special-shaped backing roll (5) is the path end, the other end of first special-shaped backing roll (5) is the path end, the diameter of one end of first special-shaped backing roll (5) is less than the diameter of the other end of first special-shaped backing roll (5), the side periphery of first special-shaped backing roll (5) is by the central line in plane place of first special-shaped backing roll (5) and the figure that cuts, the two arcs about first special-shaped backing roll (5), first special-shaped backing roll (5) each other is mirror image (6), the special-shaped backing roll (7) is the first swing arm (13), the one end of first special-shaped backing roll (11) is the path end of second swing arm (7), the one end of first special-shaped backing roll is the second special-shaped backing roll is the end, the second end of swing arm is the special-shaped end, the special-shaped backing roll is the special-shaped end, and the special-shaped backing roll is, one end of the second swing arm (12) and one end of the third swing arm (13) can be close to the rolling axis (10), so that the first special-shaped support roller (5), the second special-shaped support roller (6) and the third special-shaped support roller (7) clamp the core rod (1) positioned on the rolling axis (10);
the diameter of the first special-shaped supporting roller (5) is gradually reduced along the direction from the large diameter end of the first special-shaped supporting roller (5) to the small diameter end of the first special-shaped supporting roller (5), and the central angle corresponding to the arc line is 25-40 degrees;
the special-shaped roller core rod supporting machine further comprises a frame (2), and the first swing arm (11), the second swing arm (12) and the third swing arm (13) are hinged with the frame (2).
2. The profiled roll mandrel holder as claimed in claim 1, characterized in that the length of the first profiled support roll (5) is 50mm to 200mm, the diameter of the small diameter end of the first profiled support roll (5) is 150mm to 630mm, and the diameter of the large diameter end of the first profiled support roll (5) is 200mm to 800mm.
3. The special-shaped roller core rod supporting machine according to claim 1, characterized in that the hinge point of the first swing arm (11) and the frame (2), the hinge point of the second swing arm (12) and the frame (2) and the hinge point of the third swing arm (13) and the frame (2) are all positioned on the same circle, and the circle center of the circle is positioned on the rolling axis (10).
4. A special-shaped roller core rod supporting machine according to claim 3, characterized in that the hinge points of the first swing arm (11) and the frame (2), the hinge points of the second swing arm (12) and the frame (2) and the hinge points of the third swing arm (13) and the frame (2) are uniformly distributed along the circumferential direction of the rolling axis (10).
5. The profiled roll mandrel holder as claimed in claim 1, characterized in that the first swing arm (11) is hinged to the second swing arm (12) by a first link (15), and the first swing arm (11) is hinged to the third swing arm (13) by a second link (16).
6. The special-shaped roller core rod supporting machine according to claim 5, further comprising a support (3) and a hydraulic cylinder (4), wherein one end of the hydraulic cylinder (4) is hinged with the support (3), the support (3) is fixedly connected with the frame (2), and the other end of the hydraulic cylinder (4) is hinged with the other end of the first swing arm (11).
7. The profiled roll mandrel holder as claimed in claim 1, characterized in that the first swing arm (11) is located above the rolling axis (10), the second swing arm (12) is located below the rolling axis (10) to the right and the third swing arm (13) is located below the rolling axis (10) to the left.
8. The profiled roll mandrel holder as claimed in claim 1, characterised in that the first profiled support roll (5) is located above the rolling axis (10) on the right, the second profiled support roll (6) is located below the rolling axis (10) and the third profiled support roll (7) is located above the rolling axis (10) on the left.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810633770.8A CN108500061B (en) | 2018-06-20 | 2018-06-20 | Special-shaped roller core rod supporting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810633770.8A CN108500061B (en) | 2018-06-20 | 2018-06-20 | Special-shaped roller core rod supporting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108500061A CN108500061A (en) | 2018-09-07 |
| CN108500061B true CN108500061B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810633770.8A Active CN108500061B (en) | 2018-06-20 | 2018-06-20 | Special-shaped roller core rod supporting machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114988208B (en) * | 2022-04-27 | 2024-01-09 | 神宇通信科技股份公司 | Coaxial cable production height adjusting device |
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| JPS57112909A (en) * | 1980-12-27 | 1982-07-14 | Ishikawajima Harima Heavy Ind Co Ltd | Stabilizing device for shell and bar of rotary rolling mill for pipe |
| US4638655A (en) * | 1983-12-14 | 1987-01-27 | Mannesmann Ag | Holding and guiding a mandrel rod in rolled stock in and adjacent to a tube rolling mill |
| CN102172643A (en) * | 2010-12-08 | 2011-09-07 | 太原重工股份有限公司 | Three-roller concentric support device |
| CN202752315U (en) * | 2012-09-17 | 2013-02-27 | 太原通泽重工有限公司 | Core rod support device capable of moving out of steel tube rolling lines quickly |
| CN105032935A (en) * | 2015-07-21 | 2015-11-11 | 江苏华菱锡钢特钢有限公司 | Electro-hydraulic hybrid driving core rod supporting rack |
| CN208303495U (en) * | 2018-06-20 | 2019-01-01 | 北京京诚之星科技开发有限公司 | Profiled roller plug supports machine |
-
2018
- 2018-06-20 CN CN201810633770.8A patent/CN108500061B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57112909A (en) * | 1980-12-27 | 1982-07-14 | Ishikawajima Harima Heavy Ind Co Ltd | Stabilizing device for shell and bar of rotary rolling mill for pipe |
| US4638655A (en) * | 1983-12-14 | 1987-01-27 | Mannesmann Ag | Holding and guiding a mandrel rod in rolled stock in and adjacent to a tube rolling mill |
| CN102172643A (en) * | 2010-12-08 | 2011-09-07 | 太原重工股份有限公司 | Three-roller concentric support device |
| CN202752315U (en) * | 2012-09-17 | 2013-02-27 | 太原通泽重工有限公司 | Core rod support device capable of moving out of steel tube rolling lines quickly |
| CN105032935A (en) * | 2015-07-21 | 2015-11-11 | 江苏华菱锡钢特钢有限公司 | Electro-hydraulic hybrid driving core rod supporting rack |
| CN208303495U (en) * | 2018-06-20 | 2019-01-01 | 北京京诚之星科技开发有限公司 | Profiled roller plug supports machine |
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Effective date of registration: 20220209 Address after: 100176 room l1-1018, 7 Jian'an street, Beijing Economic and Technological Development Zone, Daxing District, Beijing Applicant after: CERI Long Product Co.,Ltd. Applicant after: MCC CAPITAL ENGINEERING & RESEARCH Inc.,Ltd. Address before: 100176 No.7 Jian'an street, Beijing Economic and Technological Development Zone, Daxing District, Beijing Applicant before: CERI TECHNOLOGY Co.,Ltd. Applicant before: MCC CAPITAL ENGINEERING & RESEARCH Inc.,Ltd. |
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