CN114669604B - Pull rod device of short stress line rolling mill - Google Patents
Pull rod device of short stress line rolling mill Download PDFInfo
- Publication number
- CN114669604B CN114669604B CN202210332357.4A CN202210332357A CN114669604B CN 114669604 B CN114669604 B CN 114669604B CN 202210332357 A CN202210332357 A CN 202210332357A CN 114669604 B CN114669604 B CN 114669604B
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- China
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- pull rod
- roll gap
- bearing seat
- adjusting cylinder
- gap adjusting
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- 238000005096 rolling process Methods 0.000 title claims abstract description 27
- 210000004907 gland Anatomy 0.000 claims abstract description 32
- 238000006073 displacement reaction Methods 0.000 claims abstract description 29
- 238000009434 installation Methods 0.000 claims description 5
- 230000004044 response Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
- B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
- B21B38/105—Calibrating or presetting roll-gap
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a pull rod device of a short stress line rolling mill. Comprises a frame and a pull rod arranged on the frame, wherein the middle part of the pull rod is fixed on the frame; the upper bearing seat and the lower bearing seat are respectively matched with an upper shaft lever and a lower shaft lever of the pull rod through shaft holes; the upper end part of the pull rod is positioned in the shaft hole of the upper bearing seat; the upper gland is arranged and fixed at the top end of the shaft hole of the upper bearing seat; an upper roll gap adjusting cylinder is arranged in the shaft hole between the upper gland and the upper end of the pull rod; the upper end part of the pull rod is fixedly connected with a piston rod of the roll gap adjusting cylinder; the lower end part of the pull rod is positioned in the shaft hole of the lower bearing seat; the lower gland is arranged and fixed at the bottom end of the shaft hole of the lower bearing seat; a lower roll gap adjusting cylinder is arranged in a shaft hole between the lower gland and the lower end of the pull rod; wherein, the lower end of the pull rod is fixedly connected with the piston rod of the roll gap adjusting cylinder. The displacement of the roll gap adjusting cylinder is controlled hydraulically, and the real-time roll gap size is detected by using a displacement sensor, so that the closed-loop control of the roll gap dynamic size parameter can be realized.
Description
Technical Field
The invention relates to a pull rod device with a short stress line, and belongs to the technical field of steel rolling equipment.
Background
The short stress line rolling mill is widely used in the rod and wire rolling process, and has the advantages of small elastic deformation, high rigidity, compact structure, convenient roll changing and the like. However, conventional short stress wire rolling mills typically adjust the roll gap size in the non-rolled state by means of a roll gap adjustment device. With the development of endless rolling technology, continuous rolling of a rolling mill is required, and the rolling mill does not adjust the roll gap under no load, but adjusts the roll gap size with load in the rolling process. Meanwhile, under the development trend of intelligent manufacturing technology, in order to improve the product precision, the roller gap also needs to be automatically adjusted on line according to product parameters. The traditional roll gap adjusting device adopts a hydraulic motor to drive a gear, a worm gear and other mechanisms to output torque, rotates a rolling mill pull rod, and realizes the center distance control of an upper roll bearing seat and a lower roll bearing seat by the rotation of a trapezoidal thread pair of the pull rod and a copper nut. Due to the structural reasons of the traditional roll gap adjusting device, the transmission efficiency is low, the response speed is low, and the process requirement of adjusting the roll gap by the on-line quick response of the short stress line rolling mill is difficult to adapt.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a pull rod device with a short stress line, which can quickly adjust the roll gap on line in real time according to the rolling process requirements.
The pull rod device of the short stress line rolling mill comprises a frame and a pull rod arranged on the frame, wherein the middle part of the pull rod is fixed on the frame;
the upper bearing seat and the lower bearing seat are respectively matched with an upper shaft lever and a lower shaft lever of the pull rod through shaft holes in an installation manner and can move along the central line of the pull rod;
the upper end part of the pull rod is positioned in the shaft hole of the upper bearing seat; the upper gland is arranged and fixed at the top end of the shaft hole of the upper bearing seat; an upper roll gap adjusting cylinder is arranged in the shaft hole between the upper gland and the upper end of the pull rod; the upper end part of the pull rod is fixedly connected with a piston rod of the roll gap adjusting cylinder;
the lower end part of the pull rod is positioned in the shaft hole of the lower bearing seat; the lower gland is arranged and fixed at the bottom end of the shaft hole of the lower bearing seat; a lower roll gap adjusting cylinder is arranged in a shaft hole between the lower gland and the lower end of the pull rod; wherein, the lower end of the pull rod is fixedly connected with the piston rod of the roll gap adjusting cylinder.
Further, a displacement sensor is arranged on the gland to detect the displacement stroke of the roll gap adjusting cylinder in real time.
Further, a disc spring group is arranged between the lower roll gap adjusting cylinder and the lower gland; a disc spring group is arranged between the upper roll gap adjusting cylinder and the upper gland.
The device adopts the roll gap adjusting cylinder to directly drive the roll bearing seat to move along the center line of the pull rod, and controls the displacement of the roll in real time according to the process requirements. The roll gap adjusting cylinder is of an integral structure and convenient to replace; the roller gap adjusting device has the advantages of quick response of roller gap adjusting speed, high transmission efficiency of the mechanism and convenience in maintenance.
Further, an upper bearing seat, a convex spherical pad, a concave spherical pad, a roll gap adjusting cylinder, a disc spring group and a gland are assembled on the upper part of the pull rod in sequence; the upper end of the pull rod is fixedly connected with a piston rod connecting pin of the roll gap adjusting cylinder. The upper bearing seat is provided with an assembly hole A, and the gland is arranged and fixed at the top end of the upper bearing seat; the convex spherical pad, the concave spherical pad, the roll gap adjusting cylinder and the disc spring group are arranged in the assembly hole A of the upper bearing seat in a matched mode through shaft holes.
A lower bearing seat, a convex spherical cushion, a concave spherical cushion, a roll gap adjusting cylinder, a disc spring group and a gland are assembled at the lower part of the pull rod in sequence; the lower end part of the pull rod is fixedly connected with a piston rod connecting pin of the roll gap adjusting cylinder; the lower bearing seat is provided with an assembly hole B, and the gland is fixedly arranged at the bottom end of the lower bearing seat. The convex spherical pad, the concave spherical pad, the roll gap adjusting cylinder and the disc spring group are arranged in the assembly hole B of the lower bearing seat in a matching way through shaft holes; the convex spherical surface pad and the concave spherical surface pad are arranged in a matched mode, and the influence of roller deformation on the bearing seat can be eliminated through concave-convex spherical surface matching; the convex spherical pad is arranged on the end face of the assembly hole in the upper bearing seat through a plane; the concave spherical pad is matched with the end face of the piston seat at the connecting side of the piston rod of the roll gap adjusting cylinder through a plane; and a disc spring group is arranged between the gland and the roll gap adjusting cylinder and used for eliminating assembly gaps of all parts and improving the accuracy of the rolling mill during roll gap adjustment. The end face of a piston seat at the side of a sensor mounting rod of the roll gap adjusting cylinder is matched with the disc spring group; the gland is provided with a displacement sensor which is inserted into a sensor mounting rod of the roll gap adjusting cylinder and used for detecting the displacement of the roll gap adjusting cylinder. In order to protect the displacement sensor, a protective cover is arranged outside the displacement sensor. The roll gap adjusting cylinder is of an integral structure and convenient to replace.
Further, the sealing devices are arranged at the matching position of the pressing sleeve and the shaft hole of the pull rod, the matching position of the pull rod and the shaft hole of the upper bearing seat and the matching position of the pull rod and the shaft hole of the lower bearing seat, so as to prevent dust, moisture and other impurities from entering.
Further, when the oil is fed into the oil port a at the connecting side of the piston rod of the roll gap adjusting cylinder, the center distance between the upper bearing seat and the lower bearing seat is reduced, and the roll gap is reduced. When the oil is fed into the sensor mounting rod side oil port b of the roll gap adjusting cylinder, the center distance between the upper bearing seat and the lower bearing seat is increased, and the roll gap is increased. The displacement stroke of the roll gap adjusting cylinder can be detected in real time through the displacement sensor, so that the center distance and the real-time roll gap size of the upper roll system and the lower roll system can be detected.
According to the invention, the displacement of the roll gap adjusting cylinder is controlled hydraulically, and the real-time roll gap size is detected by using the displacement sensor, so that the closed-loop control of the roll gap dynamic size parameter can be realized. The device is particularly suitable for the size adjustment of the roll gap in the online rolling process, and because the hydraulic cylinder directly drives the upper bearing seat and the lower bearing seat to move, the transmission efficiency of the mechanism is high, the rolling force of the roll gap adjusting cylinder is large, and the response of the speed of adjusting the roll gap is quick.
Drawings
FIG. 1 is a schematic diagram of the main structure of a drawbar apparatus of a short stress path rolling mill;
FIG. 2 is a schematic view of the installation of the drawbar assembly in a rolling mill;
wherein: 1. 1.1 parts of pull rod device, 1.2 parts of pressing sleeve, 1.3 parts of sealing device, 1.4 parts of convex spherical surface pad, 1.5 parts of concave spherical surface pad, 1.6 parts of roll gap adjusting cylinder, 1.7 parts of disc spring group, 1.8 parts of gland, 1.9 parts of displacement sensor, 1.10 parts of protective cover, 1.11 parts of connecting pin, 2 parts of upper bearing seat, 3 parts of upper roller system, 4 parts of lower roller system, 5 parts of lower bearing seat, 6 parts of frame.
Detailed Description
Preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, a pull rod device 1 of a short stress line rolling mill comprises a pull rod 1.1, a roll gap adjusting cylinder 1.6, a displacement sensor 1.9, a pressing sleeve 1.2, a sealing device 1.3, a convex spherical pad 1.4, a concave spherical pad 1.5, a disc spring set 1.7, a gland 1.8 and a protective cover 1.10.
As shown in fig. 1 and 2, the pull rod is installed and fixed in the frame 6 by the press sleeve 1.2 through the installation end surfaces of the upper shaft hole and the lower shaft hole in the middle of the pull rod 1.1.
The upper bearing seat 2 and the lower bearing seat 5 are respectively matched with an upper shaft lever and a lower shaft lever of the pull rod 1 through shaft holes in an installation manner and can move along the central line of the pull rod. The upper roller system 3 is installed in the upper bearing seat 2 and moves along with the upper bearing seat 2. The lower roller system 4 is installed in the lower bearing housing 5 and moves with the lower bearing housing 5.
The upper bearing seat 2 and the lower bearing seat 5 are symmetrically arranged on the pull rod 1.1 about the rolling center line.
The upper part of the pull rod 1.1 is provided with an upper bearing seat 2, a convex spherical surface pad 1.4, a concave spherical surface pad 1.5, a roll gap adjusting cylinder 1.6, a disc spring group 1.7 and a gland 1.8 in sequence. The upper end of the pull rod 1.1 is fixedly connected with a piston rod connecting pin 1.11 of the roll gap adjusting cylinder 1.6. The upper bearing seat 2 is provided with an assembly hole A, and the gland 1.8 is fixedly arranged at the top end of the upper bearing seat 2. The convex spherical pad 1.4, the concave spherical pad 1.5, the roll gap adjusting cylinder 1.6 and the disc spring set 1.7 are arranged in the assembly hole A of the upper bearing seat 2 in a shaft hole matching way.
The lower part of the pull rod 1.1 is provided with a lower bearing seat 5, a convex spherical surface pad 1.4, a concave spherical surface pad 1.5, a roll gap adjusting cylinder 1.6, a disc spring group 1.7 and a gland 1.8 in sequence. The lower end of the pull rod 1.1 is fixedly connected with a piston rod connecting pin 1.11 of the roll gap adjusting cylinder 1.6. The lower bearing seat 5 is provided with an assembly hole B, and the gland 1.8 is fixedly arranged at the bottom end of the lower bearing seat 5. The convex spherical pad 1.4, the concave spherical pad 1.5, the roll gap adjusting cylinder 1.6 and the disc spring set 1.7 are arranged in the assembly hole B of the lower bearing seat in a matching way through shaft holes. The convex spherical pad 1.4 and the concave spherical pad 1.5 are arranged in a matched mode, and the influence of roller deformation on the bearing can be eliminated through concave-convex spherical matching. The convex spherical pad 1.4 is mounted by a flat surface on the end face of the mounting hole in the upper bearing block 2. The concave spherical pad 1.5 is matched with the end face of a piston seat at the connecting side of a piston rod of the roll gap adjusting cylinder 1.6 through a plane. A disc spring set 1.7 is arranged between the gland 1.8 and the roll gap adjusting cylinder 1.6 and used for eliminating assembly gaps of all parts and improving accuracy of roll gap adjustment of a rolling mill. The end face of a piston seat at the side of a sensor mounting rod of the roll gap adjusting cylinder 1.8 is matched with the disc spring set 1.7. The gland 1.8 is provided with a displacement sensor 1.9, and the displacement sensor 1.9 is inserted into a sensor mounting rod of the roll gap adjusting cylinder 1.6 and is used for detecting the displacement of the roll gap adjusting cylinder 1.6. To protect the displacement sensor 1.9, a protective cover 1.10 is arranged outside the displacement sensor. For convenient replacement, the roll gap adjusting cylinder 1.6 is of an integral structure.
1.2 the pressure sleeve is equipped with sealing device 1.3 with the shaft hole cooperation department of pull rod 1.1, the shaft hole cooperation department of pull rod 1.1 and bolster bearing housing 2 and pull rod 1.1 and bolster bearing housing 5 shaft hole cooperation department to prevent impurity entering such as dust, moisture.
The number of the pull rod devices 1 in the rolling mill is generally 4.
When the oil is fed into the oil port a at the connecting side of the piston rod of the roll gap adjusting cylinder 1.6, the center distance between the upper bearing seat 2 and the lower bearing seat 5 is reduced, and the roll gap is reduced. When the oil is fed into the sensor mounting rod side oil port b of the roll gap adjusting cylinder 1.6, the center distance between the upper bearing seat 2 and the lower bearing seat 5 is increased, and the roll gap is increased. The displacement stroke of the roll gap adjusting cylinder 1.6 can be detected in real time through the displacement sensor 1.9, so that the roll center distance and the real-time roll gap size of the upper roll system and the lower roll system can be detected.
In summary, the displacement of the roll gap adjusting cylinder 1.6 is controlled hydraulically, and the real-time roll gap size is detected by using the displacement sensor 1.9, so that the closed-loop control of the roll gap dynamic size parameter can be realized. The device is particularly suitable for the size adjustment of the roll gap in the online rolling process, and because the roll gap adjusting cylinder 1.6 directly drives the upper bearing seat and the lower bearing seat to move, the transmission efficiency of the mechanism is high, the pressing force of the roll gap adjusting cylinder 1.6 is large, and the response of the speed of adjusting the roll gap is quick.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (2)
1. The pull rod device of the short stress line rolling mill comprises a frame and a pull rod arranged on the frame, and is characterized in that the middle part of the pull rod is fixed on the frame;
the upper bearing seat and the lower bearing seat are respectively matched with an upper shaft lever and a lower shaft lever of the pull rod through shaft holes in an installation manner and can move along the central line of the pull rod;
the upper end part of the pull rod is positioned in the shaft hole of the upper bearing seat; the upper gland is arranged and fixed at the top end of the shaft hole of the upper bearing seat; an upper roll gap adjusting cylinder is arranged in the shaft hole between the upper gland and the upper end of the pull rod; the upper end part of the pull rod is fixedly connected with a piston rod of the roll gap adjusting cylinder;
the lower end part of the pull rod is positioned in the shaft hole of the lower bearing seat; the lower gland is arranged and fixed at the bottom end of the shaft hole of the lower bearing seat; a lower roll gap adjusting cylinder is arranged in a shaft hole between the lower gland and the lower end of the pull rod; the lower end part of the pull rod is fixedly connected with a piston rod of the roll gap adjusting cylinder;
a displacement sensor is arranged on the gland to detect the displacement stroke of the roll gap adjusting cylinder in real time;
the displacement sensor is inserted into a sensor mounting rod of the roll gap adjusting cylinder so as to detect the displacement of the roll gap adjusting cylinder;
when the piston rod of the roll gap adjusting cylinder is connected with the side oil port a to feed oil, the center distance between the upper bearing seat and the lower bearing seat is reduced, and the roll gap is reduced; when the oil is fed into the sensor mounting rod side oil port b of the roll gap adjusting cylinder, the center distance between the upper bearing seat and the lower bearing seat is increased, and the roll gap is increased; the displacement stroke of the roller gap adjusting cylinder is detected in real time, and the center distance and the real-time roller gap size of the upper roller system and the lower roller system are detected.
2. The pull rod device of a short stress line rolling mill according to claim 1, wherein a disc spring group is arranged between the lower roll gap adjusting cylinder and the lower gland; a disc spring group is arranged between the upper roll gap adjusting cylinder and the upper gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210332357.4A CN114669604B (en) | 2022-03-30 | 2022-03-30 | Pull rod device of short stress line rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210332357.4A CN114669604B (en) | 2022-03-30 | 2022-03-30 | Pull rod device of short stress line rolling mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114669604A CN114669604A (en) | 2022-06-28 |
| CN114669604B true CN114669604B (en) | 2024-03-01 |
Family
ID=82075586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210332357.4A Active CN114669604B (en) | 2022-03-30 | 2022-03-30 | Pull rod device of short stress line rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114669604B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1265147A (en) * | 1968-04-11 | 1972-03-01 | ||
| CN102553911A (en) * | 2012-02-08 | 2012-07-11 | 中冶赛迪工程技术股份有限公司 | Full-hydraulic roll gap adjusting short-stress-path rolling mill |
| CN205146887U (en) * | 2015-11-30 | 2016-04-13 | 马鞍山市银鼎机械制造有限公司 | Roller clearance adjusting device of rolling mill |
| CN106734244A (en) * | 2016-12-30 | 2017-05-31 | 重庆麦拓科技有限公司 | A kind of milling train and its compound roll-separating mechanism |
| CN112058914A (en) * | 2020-09-08 | 2020-12-11 | 沈阳大陆激光技术有限公司 | Roller gap automatic adjusting prestress short-stress rolling mill |
-
2022
- 2022-03-30 CN CN202210332357.4A patent/CN114669604B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1265147A (en) * | 1968-04-11 | 1972-03-01 | ||
| CN102553911A (en) * | 2012-02-08 | 2012-07-11 | 中冶赛迪工程技术股份有限公司 | Full-hydraulic roll gap adjusting short-stress-path rolling mill |
| CN205146887U (en) * | 2015-11-30 | 2016-04-13 | 马鞍山市银鼎机械制造有限公司 | Roller clearance adjusting device of rolling mill |
| CN106734244A (en) * | 2016-12-30 | 2017-05-31 | 重庆麦拓科技有限公司 | A kind of milling train and its compound roll-separating mechanism |
| CN112058914A (en) * | 2020-09-08 | 2020-12-11 | 沈阳大陆激光技术有限公司 | Roller gap automatic adjusting prestress short-stress rolling mill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114669604A (en) | 2022-06-28 |
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Effective date of registration: 20240124 Address after: 243000 Fu Chang Industrial Park, 259 HSI Nan Road, Ma'anshan economic and Technological Development Zone, Anhui Applicant after: HUATIAN ENGINEERING & TECHNOLOGY CORPORATION, MCC Country or region after: China Applicant after: HUATIAN NANJING ENGINEERING & TECHNOLOGY CORPORATION, MCC Address before: 243000 Fu Chang Industrial Park, 259 HSI Nan Road, Ma'anshan economic and Technological Development Zone, Anhui Applicant before: HUATIAN ENGINEERING & TECHNOLOGY CORPORATION, MCC Country or region before: China |
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