CN112024605A - Four-roller reducing mill with frame changed at one side through double inputs in same direction - Google Patents
Four-roller reducing mill with frame changed at one side through double inputs in same direction Download PDFInfo
- Publication number
- CN112024605A CN112024605A CN202010930831.4A CN202010930831A CN112024605A CN 112024605 A CN112024605 A CN 112024605A CN 202010930831 A CN202010930831 A CN 202010930831A CN 112024605 A CN112024605 A CN 112024605A
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- stand
- roller
- driving
- roll
- driven
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- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- 238000005096 rolling process Methods 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims description 22
- 238000010168 coupling process Methods 0.000 claims description 22
- 238000005859 coupling reaction Methods 0.000 claims description 22
- 239000000498 cooling water Substances 0.000 claims description 5
- 238000005461 lubrication Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000002893 slag Substances 0.000 abstract description 3
- 238000004513 sizing Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/06—Rolling hollow basic material, e.g. Assel mills
- B21B19/10—Finishing, e.g. smoothing, sizing, reeling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
- B21B35/12—Toothed-wheel gearings specially adapted for metal-rolling mills; Housings or mountings therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention belongs to the technical field of machinery, and relates to a four-roller reducing mill with frames replaced on one side in the same direction and double input. The included angle between the driving shaft and the horizontal rolling central line is 22.5 degrees, and two adjacent racks are turned over for 180 degrees along the horizontal rolling central line for use interchangeably. The roll gap of the adjacent machine frame is just coincided with the roll bottom, so that the rolling rounding efficiency and the hole pattern sealing performance are greatly improved, and the product precision is higher. Because the transmission motor and the speed reducer are arranged on one side of the main machine, the roll changing device can be arranged to have smaller moving distance and smaller occupied area as the conventional three-roll sizing and reducing machine. The main machine civil engineering foundation is not influenced by transmission arrangement, can fully meet the strength requirement, and has full drainage and slag discharge space and maintenance space of a transmission system.
Description
Technical Field
The invention belongs to the technical field of machinery, and relates to a four-roller reducing mill with a frame replaced on one side by two inputs in the same direction.
Background
The sizing and reducing mill is a finish rolling device in a seamless steel tube production line, and is an ideal production device for enlarging the specification range of products, improving the output of a tube mill and ensuring the quality of final products.
As is well known, the four-roller reducing technology has the advantages of higher forming efficiency, better outer diameter and wall thickness precision, smaller inner square degree, smaller roller wear and the like compared with a three-roller type, but for the roller frame with four rollers all actively driven, the roller frame and the main machine base housing can become huge due to the space arrangement, so that the equipment investment is increased, and the maintenance is more complicated.
Disclosure of Invention
In view of this, the present invention provides a four-roller diameter reducing machine with two input shafts in the same direction and a frame replaced on one side, which reduces the stroke of a hydraulic cylinder during roller replacement and improves the stability of the product while realizing simultaneous driving of four shafts.
In order to achieve the purpose, the invention provides the following technical scheme:
a four-roller reducing mill with frames changed on one side in the same direction and double input comprises a main machine base and a plurality of frames arranged on the main machine base; two driving shafts which are parallel to each other and are positioned at the same side are arranged in each frame; the main machine seat is provided with an automatic coupling which is used for being combined with the driving shaft to transmit power; the automatic coupling is connected with the single-input double-output speed reducer and the main motor to form a transmission system; the driving shafts in the racks are arranged at an angle a with the horizontal rolling center line, and the adjacent racks are arranged in a mirror image mode along the horizontal rolling center line and form an angle a with the horizontal rolling center line; two frames which are arranged in a mirror image mode are used interchangeably, and a roll gap of the two frames is overlapped with a roll bottom; the motor, the speed reducer and the automatic coupling are arranged on the same side of the rack; the device also comprises a rack replacing device which is arranged on the other side of the rack.
Optionally, the automatic coupling is an automatic coupling capable of being automatically engaged and disengaged, and comprises an inner gear ring connected with the driving shaft to transmit power and a spring for disengaging or resetting the inner gear ring; the hydraulic cylinder drives the inner gear ring through a connecting rod and a driving plate which are connected with the hydraulic cylinder.
Optionally, when the inner gear ring is meshed with the driving shaft, the driving plate is disengaged from the inner gear ring, and a gap e is reserved.
Optionally, a hydraulic cylinder is arranged in each frame and drives the inner gear rings on the two automatic couplers simultaneously.
Optionally, each transmission system is driven by a motor, and two driving shafts are simultaneously driven by a centralized speed reducer.
Optionally, the frame includes frame memorial archway and sets up at frame memorial archway internal drive unit, drive unit includes: the device comprises a driving shaft, a driven shaft, a driving roller and a driven roller; the driving shafts are arranged on the same side of the stand memorial archway in parallel, form an angle a with a horizontal rolling central line, and drive a driven shaft arranged between the two driving shafts in a crossing manner through a bevel gear pair; the driving rollers are arranged on the two driving shafts, and the driven rollers are arranged on the driven shafts.
Optionally, the driven shaft is arranged perpendicular to the driving shaft.
Optionally, a dry oil lubrication and cooling water distribution pipe is arranged on the frame and used for lubricating and cooling the transmission part.
Optionally, a is 22.5 °.
The invention has the beneficial effects that:
in the invention, only one motor of each rack drives two same-direction driving shafts of the rack through the centralized speed reducer, so that the synchronism is better and the transmission device is simple. The motor is far away from the center of the main machine, cooling water is prevented from being sprayed, and the failure rate is greatly reduced. The main frame foundation is not affected by the transmission arrangement, the strength can be fully ensured, and the main frame foundation has a sufficient drainage and slag discharge space and a maintenance space of a transmission system. When the frame is replaced, the frame is automatically connected and disconnected with the transmission side, the automatic coupling which is arranged on the main machine and is driven to stretch and retract by the hydraulic cylinder is used for realizing, the transmission shaft can adopt common couplings, and the cost and the complexity of spare parts of the rolling mill coupling can be greatly reduced. The roller changing device has smaller moving stroke of the push-pull hydraulic cylinder and smaller occupied area.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is an overall assembly view of the present invention;
FIG. 2 is an arrangement of racks in accordance with the present invention;
FIG. 3 is another arrangement of the racks of the present invention;
FIG. 4 is a schematic view of the engagement state of the automatic coupling;
FIG. 5 is a schematic illustration of the automatic coupling in a disengaged condition;
FIG. 6 is a left side view of the internal drive of the frame;
FIG. 7 is a front view of the internal drive of the frame;
fig. 8 is a right side view of the internal drive of the frame.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1-8, the reference numbers in the figures refer to the following elements: the automatic rolling machine comprises a main machine base 1, a machine frame 2, a machine frame replacing device 3, a shaft 4, a speed reducer 5, a motor 6, an automatic coupling 7a, two driving shafts 7b of adjacent machine frames, an inner gear ring 9, a spring 10, a hydraulic cylinder 11, a pull rod 12, a driving plate 13, a housing 14, a driving shaft 15, a driving roller 16a, a driven roller 16b, bevel gear pairs 17 and 18, a driven shaft 19, a cooling water distribution pipe 20 and dry oil lubrication 21.
A plurality of roll frames 2 of the four-roll reducing mill are sequentially arranged in a main machine seat 1, each roll frame 2 is provided with two driving shafts 15 which are parallel to each other and positioned at the same side of the roll frame 2, and the driving shafts are automatically combined with an automatic coupling 7a arranged on the main machine seat 1 to transmit power. The automatic coupling 7a is connected with a single-input double-output speed reducer 5 and a motor 6 through a standard coupling to form a transmission system, and each frame 2 of the transmission system is provided with a motor 6 for transmission.
The included angle between two driving shafts 15 in the same direction of the machine frame 2 and the horizontal rolling central line is 22.5 degrees, and two adjacent machine frames 2 rotate 180 degrees along the horizontal rolling central line for mutual use. The roll gap of the adjacent frame 2 is just coincident with the roll bottom, so that the rolling rounding efficiency and the pass closure are greatly improved, and the product precision is higher. The drive trains of adjacent frames 2 are also arranged in mirror image 180 along the horizontal centre line. 7b are two driving shafts of adjacent frames.
The motor 6, the reducer 5 and the automatic coupling 7a are all arranged on one side of the main machine. Because there is no transmission equipment on one side of the roll changing, the frame changing device 3 can be consistent with the conventional reducing mill, the roll changing push-pull stroke is small, and the occupied area is small. Because the transmission system is arranged on one side of the main machine, the foundation of the main machine has enough strength, and the main machine has sufficient drainage and slag discharge space and maintenance space of the transmission system.
The automatic coupling 7a installed on the main machine is connected with two driving shafts 15 of the frame 2 to transmit power. When the frame is replaced, the hydraulic cylinder 11 pulls the inner gear ring 9 matched with the frame 2 back for a certain stroke L through the pull rod 12 and the drive plate 13, and compresses the spring 10 inside to completely separate the inner gear ring 9 from the driving shaft 15, so that the frame 2 can be replaced normally.
When the new frame 2 is pushed into the main machine, the piston rod 11 of the hydraulic cylinder extends out, and the inner gear ring 9 is combined with the input shaft 15 of the new frame 2 under the action of the elastic force of the compression spring 10 to normally transmit power. The hydraulic cylinder 11 is fully extended, so that a gap e is reserved between the drive plate 13 and the inner gear ring 9, and the normal rotation of the inner gear ring 9 is not influenced. The same function can be achieved by providing a spring in the shaft 4 and a disengagement cylinder.
All the transmission parts are arranged in the memorial archway 14, and two driving shafts 15 which are parallel to each other and are positioned on the same side of the rack form an included angle of 22.5 degrees with the horizontal rolling center. Two driving rollers 16a are arranged on two driving shafts 15, the driving shafts 15 drive driven shafts 19 through bevel gear pairs 17 and 18, and driven rollers 16b are arranged on the driven shafts 19, so that the four rollers are driven to drive. The angle between the driving shaft 15 and the driven shaft 19 is 90 degrees. The roll stand is provided with a dry oil lubrication 21 and a cooling water piping 20 for lubricating the transmission parts and cooling the rolls.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (9)
1. A four-roller reducing mill with a same-direction double-input single-side stand change, which is characterized in that,
the device comprises a main machine seat and a plurality of frames arranged on the main machine seat;
two driving shafts which are parallel to each other and are positioned at the same side are arranged in each frame;
the main machine seat is provided with an automatic coupling which is used for being combined with the driving shaft to transmit power;
the automatic coupling is connected with the single-input double-output speed reducer and the main motor to form a transmission system;
the driving shafts in the racks are arranged at an angle a with the horizontal rolling center line, and the adjacent racks are arranged in a mirror image mode along the horizontal rolling center line and form an angle a with the horizontal rolling center line;
two frames which are arranged in a mirror image mode are used interchangeably, and a roll gap of the two frames is overlapped with a roll bottom;
the motor, the speed reducer and the automatic coupling are arranged on the same side of the rack;
the device also comprises a rack replacing device which is arranged on the other side of the rack.
2. The same-direction double-input single-side stand-changing four-roller reducing mill according to claim 1, wherein the automatic coupling is an automatic coupling capable of being automatically engaged and disengaged, and comprises an inner gear ring for being connected with a driving shaft to transmit power, and a spring for disengaging or resetting the inner gear ring; the hydraulic cylinder drives the inner gear ring through a connecting rod and a driving plate which are connected with the hydraulic cylinder.
3. The homodromous dual-input single-side stand-changing four-roller reducer according to claim 2, wherein in a state where the ring gear is engaged with the drive shaft, the drive plate is disengaged from the ring gear, leaving a gap e.
4. The same direction dual input single change frame four roll reducer as in claim 2 wherein each frame has a hydraulic cylinder therein to simultaneously drive the inner gear rings of both automatic couplings.
5. The homodromous dual-input single-change-stand four-roller reducer according to claim 1, wherein each transmission system is driven by a motor, and two drive shafts are simultaneously driven by a single centralized reducer.
6. The co-rotating dual input single-change stand four-roller reducing mill of claim 1, wherein said stand comprises a stand housing, and a drive assembly disposed within said stand housing, said drive assembly comprising: the device comprises a driving shaft, a driven shaft, a driving roller and a driven roller; the driving shafts are arranged on the same side of the stand memorial archway in parallel, form an angle a with a horizontal rolling central line, and drive a driven shaft arranged between the two driving shafts in a crossing manner through a bevel gear pair; the driving rollers are arranged on the two driving shafts, and the driven rollers are arranged on the driven shafts.
7. The homodromous dual input single side stand changer four roll reducer of claim 6 wherein said driven shaft is disposed perpendicular to said drive shaft.
8. The homodromous dual-input single-side stand-change four-roller reducer according to claim 6, wherein said stand is provided with dry oil lubrication and cooling water piping for lubricating and cooling said transmission member.
9. A co-rotating, dual input, single change stand, four roll reducer as defined in any one of claims 1-8 in which a is 22.5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010930831.4A CN112024605B (en) | 2020-09-07 | 2020-09-07 | Four-roller reducing mill with homodromous double-input single-side frame replacing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010930831.4A CN112024605B (en) | 2020-09-07 | 2020-09-07 | Four-roller reducing mill with homodromous double-input single-side frame replacing function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112024605A true CN112024605A (en) | 2020-12-04 |
| CN112024605B CN112024605B (en) | 2024-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010930831.4A Active CN112024605B (en) | 2020-09-07 | 2020-09-07 | Four-roller reducing mill with homodromous double-input single-side frame replacing function |
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| Country | Link |
|---|---|
| CN (1) | CN112024605B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3941184A (en) * | 1974-01-10 | 1976-03-02 | Kelso John W | Apparatus for manufacturing seamless metal tubular products |
| US3940962A (en) * | 1974-05-09 | 1976-03-02 | Pacific Roller Die Company, Incorporated | Conduit making machine with diameter control and method |
| CN102059251A (en) * | 2010-08-31 | 2011-05-18 | 吴军 | Four-roll planetary tube hot rolling machine |
| CN203170701U (en) * | 2013-04-03 | 2013-09-04 | 中冶赛迪工程技术股份有限公司 | Four-roll type sizing-sinking mill |
| CN103785685A (en) * | 2014-01-24 | 2014-05-14 | 中冶赛迪工程技术股份有限公司 | Four-roller fixed diameter reducing machine |
| CN203764640U (en) * | 2014-01-24 | 2014-08-13 | 中冶赛迪工程技术股份有限公司 | Four-roller sizing-reducing mill |
| CN204182678U (en) * | 2014-10-21 | 2015-03-04 | 太原普莱设工程技术有限公司 | A kind of four roller rotary rolling mill |
| CN212442567U (en) * | 2020-09-07 | 2021-02-02 | 中冶赛迪工程技术股份有限公司 | Four-roller reducing mill with frame changed at one side through double inputs in same direction |
-
2020
- 2020-09-07 CN CN202010930831.4A patent/CN112024605B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3941184A (en) * | 1974-01-10 | 1976-03-02 | Kelso John W | Apparatus for manufacturing seamless metal tubular products |
| US3940962A (en) * | 1974-05-09 | 1976-03-02 | Pacific Roller Die Company, Incorporated | Conduit making machine with diameter control and method |
| CN102059251A (en) * | 2010-08-31 | 2011-05-18 | 吴军 | Four-roll planetary tube hot rolling machine |
| CN203170701U (en) * | 2013-04-03 | 2013-09-04 | 中冶赛迪工程技术股份有限公司 | Four-roll type sizing-sinking mill |
| CN103785685A (en) * | 2014-01-24 | 2014-05-14 | 中冶赛迪工程技术股份有限公司 | Four-roller fixed diameter reducing machine |
| CN203764640U (en) * | 2014-01-24 | 2014-08-13 | 中冶赛迪工程技术股份有限公司 | Four-roller sizing-reducing mill |
| CN204182678U (en) * | 2014-10-21 | 2015-03-04 | 太原普莱设工程技术有限公司 | A kind of four roller rotary rolling mill |
| CN212442567U (en) * | 2020-09-07 | 2021-02-02 | 中冶赛迪工程技术股份有限公司 | Four-roller reducing mill with frame changed at one side through double inputs in same direction |
Non-Patent Citations (1)
| Title |
|---|
| 董海波;王建辉;: "三辊定径机轧辊机架安装调整设计分析", 冶金设备, no. 04, 15 August 2012 (2012-08-15) * |
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| Publication number | Publication date |
|---|---|
| CN112024605B (en) | 2024-05-17 |
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