CN112191692B - Anti-twist threaded steel roll assembly - Google Patents
Anti-twist threaded steel roll assembly Download PDFInfo
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- CN112191692B CN112191692B CN202011137336.4A CN202011137336A CN112191692B CN 112191692 B CN112191692 B CN 112191692B CN 202011137336 A CN202011137336 A CN 202011137336A CN 112191692 B CN112191692 B CN 112191692B
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- detection
- water
- water tank
- water inlet
- water outlet
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0224—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for wire, rods, rounds, bars
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention provides an anti-torsion threaded steel roll assembly, which belongs to the field of rolling mills and comprises a roll pair, a torsion detection device and a water tank, wherein the roll pair is fixed on a base, a fixed rack of one roll is provided with a rotating shaft and is also connected with the water tank through a push rod, the torsion detection device is arranged behind the roll pair and comprises two detection wheels which are clamped in pair, the detection wheels are circumferentially provided with semicircular grooves, the hole pattern formed after the two detection wheels are clamped in pair is the same as the hole pattern of the roll pair and is opposite to the hole pattern of the roll pair in position, the side surfaces of the detection wheels are hinged with detection pull rods, the detection pull rods are connected with the water tank, the water tank is provided with water inlet valves and water outlet valves, the water inlet valves and the water outlet valves are connected through connecting rods, the opening and closing directions of the linkage of the water inlet valves and the water outlet valves are opposite, the middle parts of the connecting rods are connected with the detection pull rods, and pistons are also arranged in the water tank and are connected with the push rods. The invention utilizes the cooling water system of the original rolling mill as power, automatically adjusts the angle of the roller, ensures the parallelism and prevents the deformed steel bar from twisting.
Description
Technical Field
The invention belongs to the field of rolling mills, and particularly relates to a roller assembly capable of automatically preventing torsion in a threaded steel rolling process.
Background
The deformed steel bar is a steel bar with transverse ribs and longitudinal ribs, and is rolled by a rolling mill, and the qualified deformed steel bar needs to meet the requirement of no torsional deformation. The twist of the deformed steel bar caused by the roll Kong Gazhi is not parallel, and according to the present research, the twist direction of the deformed steel bar is related to the offset direction of the two roll axes, that is, when the upper roll is offset clockwise relative to the lower roll, the deformed steel bar is twisted to one direction of rotation, and when the upper roll is offset counterclockwise, the deformed steel bar is twisted to the other direction of rotation. Therefore, the axes of the upper and lower rollers are ensured to be relatively parallel, which is important for preventing the deformed steel bar from twisting in the rolling process, in the prior art, the rollers are manually adjusted according to the twisting condition of the rolled deformed steel bar finished product, the method not only wastes time and labor, but also cannot achieve real-time adjustment, and the adjustment is stopped after the deformed steel bar finished product is rolled for a section in advance.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an anti-twisting threaded steel roll component which is used for automatically adjusting the deflection angle of a roll, ensuring the axes of the two rolls to be parallel and solving the problem of twisting of threaded steel caused by the unparallel rolls.
The present invention achieves the above-described object by the following technical means.
An anti-twist threaded steel roll assembly comprises a roll pair, a twist detection device and a water tank; the pair of rollers is fixed on the base, a fixed rack of one roller is provided with a rotating shaft, and the fixed rack is also connected with a water tank through a push rod;
the torsion detection device is arranged behind the roller pair and comprises two detection wheels which are clamped in pair, the detection wheels are provided with semicircular grooves along the circumferential direction, the hole patterns formed after the two detection wheels are clamped in pair are the same as the hole patterns of the roller pair and are opposite in position, the side surfaces of the detection wheels are hinged with detection pull rods, and the detection pull rods are connected with a water tank;
a water inlet valve is arranged at the water inlet of the water tank, a water outlet valve is arranged at the water outlet, the water inlet valve is connected with the water outlet valve through a connecting rod, the opening and closing directions of the water inlet valve and the water outlet valve through the linkage of the connecting rod are opposite, and the middle part of the connecting rod is connected with a detection pull rod; the water tank is also internally provided with a piston which is connected with the push rod.
Further, the water inlet is connected with a cooling water supply system of the rolling mill, and the water outlet is connected with a cooling water spray head of the rolling mill.
Furthermore, when the deformed steel bar is not twisted, the opening degree of the water inlet valve is the same as that of the water outlet valve.
Further, when the roller is provided with a plurality of grooves, a torsion detection device is arranged for any one groove.
Further, the rotating shaft is arranged in the middle of the fixed rack.
Further, the push rod is connected to one side of the fixed frame, which is deviated from the center.
Furthermore, after the two detection wheels are clamped in pairs, the cracks on the edges of the circumferential surfaces clamp the deformed steel bar longitudinal ribs.
Furthermore, the detection pull rod is hinged to the middle position of the side surface of the detection wheel pair clamp.
The invention has the beneficial effects that:
(1) According to the invention, the torsion detection device is arranged behind the roller pair to detect the torsion condition of the deformed steel bar, the water tank water inlet and outlet flow speed difference is adjusted to change the internal pressure of the water tank, the push rod is pushed by the movement of the piston in the water tank to deflect the rollers, the offset angle between the two rollers is corrected, the two rollers are ensured to be in a parallel state, and the deformed steel bar is prevented from being twisted in the rolling process. The whole adjusting process is automatically completed by the device, and extra manpower is not needed.
(2) The invention utilizes the cooling water system equipped by the rolling mill, and the original cooling water is taken as the power source for pushing the roller by the device, thereby needing no additional power equipment; the invention fully utilizes the existing equipment mechanism to realize automatic adjustment, and has the advantages of low modification cost, less additional parts and small additionally occupied space on the basis of the existing equipment.
(3) According to the invention, the pressure variation in the water tank is increased by the difference of the water flow speed in the water tank and the accumulation of time, so that the original tiny torsion of the deformed steel bar is amplified; control of the slight twist is achieved with limited device size and precision.
(4) The invention can deal with the condition of arranging a plurality of rolling grooves by only arranging one torsion detection device.
(5) The invention is provided with the opposite clamping type detection wheel structure, utilizes the longitudinal ribs of the deformed steel bar as a torsion identification basis, and has simple structure and high reliability.
Drawings
FIG. 1 is a schematic view of the structure of a screw-thread steel rolling mill according to the present invention;
FIG. 2 is a schematic view of the connection structure of the upper roll according to the present invention;
FIG. 3 is a schematic view of the torsion detecting apparatus of the present invention;
FIG. 4 is a schematic view of the structure of the water tank of the present invention;
FIG. 5 is a cross-sectional view of a deformed steel bar;
FIG. 6 is a schematic view of twisted longitudinal ribs of deformed steel bars;
reference numerals are as follows: 1. the device comprises a base, 21 parts of an upper roller, 22 parts of a lower roller, 23 parts of a rotating shaft, 24 parts of a push rod, 3 parts of a torsion detection device, 31 parts of a detection wheel, 32 parts of a detection pull rod, 4 parts of a water tank, 41 parts of a water inlet, 42 parts of a water outlet, 43 parts of a water inlet valve, 44 parts of a water outlet valve, 45 parts of a piston and 5 parts of thread steel.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, in a screw rolling mill, a pair of rolls, a water tank 4 and a torsion detecting device 3 are fixed to a base 1, and since the direction of rolling progress of the mill is shown from left to right, the left side is shown as the front or front of the mill, the right side is shown as the rear or rear of the mill, and a screw 5 is formed by rolling through the pair of rolls from the front of the mill.
As shown in fig. 1 and fig. 2, the roller pair is composed of an upper roller 21 and a lower roller 22, a rotating shaft 23 is arranged in the middle of a fixed frame on the upper portion of the upper roller 21, the upper roller 21 can rotate relative to the lower roller 22 in the horizontal direction through the rotating shaft 23, a transverse sliding groove is arranged on one side of the fixed frame on the upper portion of the upper roller 21, which deviates from the center, a push rod 24 is connected in a sliding manner through the sliding groove, and the other end of the push rod 24 is connected with the water tank 4.
As shown in fig. 1 and 3, the torsion detection device 3 is located behind the pair of rolls, the torsion detection device 3 includes two detection wheels 31 disposed opposite to each other up and down, a circle of semicircular groove is disposed in the circumferential direction of the detection wheel 31, and a circular pass formed by the upper and lower detection wheels 31 after being clamped is the same as a finished pass of the deformed steel bar 5 rolled by the pair of rolls and is opposite to each other front and back; in the cross section of the deformed steel bar 5 shown in fig. 5, the left and right sides of the protrusion are longitudinal ribs, and after the upper and lower detection wheels 31 are clamped in pair, a gap formed at the edges of the circumferential surfaces of the two detection wheels 31 just clamps the longitudinal ribs of the deformed steel bar 5; the center of the side surface of the upper and lower detection wheels 31 clamped in pairs is hinged with a detection pull rod 32, the detection pull rod 32 moves up and down along with the deflection of the detection wheels 31, and the other end of the detection pull rod 32 is connected with the water tank 4.
As shown in fig. 1 and 4, the water tank 4 is provided with a water inlet 41 and a water outlet 42, both the water inlet 41 and the water outlet 42 are interfaces capable of adjusting the flow rate of inlet and outlet water, a water inlet valve 43 is arranged at the water inlet 41, and a water outlet valve 44 is arranged at the water outlet 42; a connecting rod is arranged between the water inlet valve 43 and the water outlet valve 44, and the water inlet valve 43 and the water outlet valve 44 simultaneously perform opposite opening and closing actions through the linkage action of the connecting rod, namely when the connecting rod moves to one side, the opening degree of the water inlet valve 43 is increased, and the opening degree of the water outlet valve 44 is reduced, and when the connecting rod moves to the other side, the opening degree of the water inlet valve 43 is reduced, and the opening degree of the water outlet valve 44 is increased; the middle part of the connecting rod is also connected with the detection pull rod 32, and the connecting rod moves along with the movement of the detection pull rod 32. The inside of the water tank 4 is also provided with a piston 45, and the piston 45 is fixedly connected with the push rod 24. The water inlet 41 of the water tank is connected with a cooling water supply system of the rolling mill, and the water outlet 42 of the water tank is connected with a cooling water spray head of the rolling mill.
The working principle of the invention is as follows:
the deformed steel bar 5 enters from the front end of the rolling mill and is rolled and formed by a roller pair, wherein the roller pair rolls the steel bar into a transverse rib and a longitudinal rib, and the deformed steel bar 5 rolled by the roller is transmitted and output to the subsequent process after passing through the torsion detection device 3; in the rolling process, the water tank 4 continuously provides cooling water for the cooling water spray heads, and the cooling water spray heads spray water to the roller for cooling.
Under the normal no-torsion condition of the deformed steel bar 5, the horizontal heights of the two longitudinal ribs are kept consistent, the detection wheels 31 clamped at the upper end and the lower end of the deformed steel bar 5 are also in a vertical undeflected state, the detection pull rod 32 in the state is in the middle position of up-down balance, the opening degrees of the water inlet valve 43 and the water outlet valve 44 in the water tank 4 are consistent, namely the water flow rates of the water inlet 41 and the water outlet 42 are consistent.
When the upper roller 21 and the lower roller 22 deviate, the axes of the two rollers are not parallel, so that the deformed steel bar 5 is twisted, the longitudinal ribs on the deformed steel bar 5 are also twisted, the detection wheels 31 clamped at the two ends of the deformed steel bar 5 are deflected at the moment, the detection pull rod 32 is driven to move upwards or downwards, the connecting rod connected with the detection pull rod 32 in the water tank 4 moves correspondingly along with the movement of the detection pull rod 32, and the water inlet valve 43 and the water outlet valve 44 perform opposite opening and closing actions simultaneously along with the movement of the connecting rod, so that the speed difference between the inlet water and the outlet water in the water tank 4 is finally caused; if the water inlet speed is higher than the water outlet speed, the pressure in the water tank 4 is gradually increased, and then the push rod 24 is pushed by the piston 45, otherwise, when the water inlet speed is lower than the water outlet speed, the piston 45 pulls back the push rod 24; finally, the upper roll 21 is pivoted about the axis of rotation 23 by means of the push rod 24, in such a way that the angular offset between the upper roll 21 and the lower roll 22 is corrected in such a way that the roll axes remain parallel.
The invention aims at the problem that the deviation angle between two rollers is usually a tiny deviation invisible to naked eyes, and the deviation with a large angle is manually corrected when the rollers are initially installed or a machine is debugged; therefore, the twist of the deformed steel bar caused by the unparallel rollers is not too large, the twisted condition of the deformed steel bar can be visually seen only by reinforcing steel bars with enough length, but the horizontal distance from the twist detection device 3 to the rollers is limited due to the practical size limitation of the rolling mill, and the deflection amount of longitudinal ribs is smaller on the distance length, as shown in fig. 6; therefore, the invention does not adopt the method of directly correcting the roller angle through the deflection, and the method needs high-precision detection equipment and high-power pushing equipment for directly correcting the roller angle through the deflection.
The invention uses the cooling water system equipped by the existing rolling mill to associate the torsion detection device 3 for detecting the tiny deflection caused by the torsion of the deformed steel bar 5 with the water inlet valve 43 and the water outlet valve 44 of the water tank 4; as long as the deformed steel bar 5 is twisted, no matter the twisted steel bar is severe or slight, the water inlet valve 43 and the water outlet valve 44 generate flow speed differences with corresponding sizes, and the pressure variation in the water tank 4 is gradually increased along with the accumulation of time, and when the pressure variation is large to a certain degree, the push rod 24 can be driven to move, so that the angle of the roller is corrected.
The deformed steel bar roller is generally provided with a plurality of grooves in parallel along the axial direction to form a plurality of pass shapes and simultaneously roll a plurality of deformed steel bars, for example, the upper roller 21 shown in fig. 2 is provided with three grooves; therefore, when a plurality of grooves exist in the roller, one or more grooves can be selected optionally, and the torsion detection device 3 is arranged at the corresponding position, or the torsion detection device 3 is arranged at the corresponding position for all the grooves; the preferred embodiment of the present invention is to provide a torsion detection device 3. The twisted deformed steel bars caused by the unparallel rollers are twisted, although the twisted deformed steel bars rolled by each rolling groove are different, the twisted directions are consistent, and the invention aims to ensure that the rollers are parallel, so that one twist detection device 3 and a plurality of twist detection devices are arranged, the difference is not great in nature, but the arrangement of the plurality of twist detection devices can cause inconsistent opening adjusting instructions of the water inlet valve and the water outlet valve, and the control difficulty is increased.
The present invention is not limited to the above-described embodiments, and any obvious improvement, replacement or modification by those skilled in the art can be made without departing from the spirit of the present invention.
Claims (4)
1. The utility model provides an anti-twist threaded steel roll assembly which characterized in that: comprises a roller pair, a torsion detection device (3) and a water tank (4); the pair of rollers is fixed on the base (1), a fixed rack of one roller is provided with a rotating shaft (23), the fixed rack is further connected with the water tank (4) through a push rod (24), the rotating shaft (23) is arranged in the middle of the fixed rack, and the push rod (24) is connected to one side of the fixed rack, which deviates from the center;
the torsion detection device (3) is arranged behind the roller pair and comprises two oppositely-clamped detection wheels (31), the detection wheels (31) are provided with semicircular grooves along the circumferential direction, the hole patterns formed after the two detection wheels (31) are oppositely clamped are the same as those of the roller pair and are opposite in position, and after the two detection wheels (31) are oppositely clamped, the longitudinal ribs of the deformed steel bar are clamped by the seams at the edges of the circumferential surface; the side surface of the detection wheel (31) is hinged with a detection pull rod (32), the detection pull rod (32) is connected with the water tank (4), and the detection pull rod (32) is hinged at the middle position of the side surface of the detection wheel (31) after being clamped;
a water inlet valve (43) is arranged at the water inlet (41) of the water tank (4), a water outlet valve (44) is arranged at the water outlet (42), the water inlet valve (43) is connected with the water outlet valve (44) through a connecting rod, the opening and closing directions of the water inlet valve (43) and the water outlet valve (44) linked through the connecting rod are opposite, and the middle part of the connecting rod is connected with the detection pull rod (32); a piston (45) is also arranged in the water tank (4), and the piston (45) is connected with the push rod (24).
2. The anti-twist threaded steel roll assembly of claim 1, wherein: the water inlet (41) is connected with a cooling water supply system of the rolling mill, and the water outlet (42) is connected with a cooling water spray head of the rolling mill.
3. The anti-twist threaded steel roll assembly of claim 1, wherein: when the deformed steel bar is not twisted, the opening degree of the water inlet valve (43) is the same as that of the water outlet valve (44).
4. The anti-twist threaded steel roll assembly of claim 1, wherein: when the roller is provided with a plurality of grooves, a torsion detection device (3) is arranged for any one groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011137336.4A CN112191692B (en) | 2020-10-22 | 2020-10-22 | Anti-twist threaded steel roll assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011137336.4A CN112191692B (en) | 2020-10-22 | 2020-10-22 | Anti-twist threaded steel roll assembly |
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| Publication Number | Publication Date |
|---|---|
| CN112191692A CN112191692A (en) | 2021-01-08 |
| CN112191692B true CN112191692B (en) | 2023-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011137336.4A Active CN112191692B (en) | 2020-10-22 | 2020-10-22 | Anti-twist threaded steel roll assembly |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE623818C (en) * | 1935-04-09 | |||
| DE3728795A1 (en) * | 1987-08-26 | 1989-03-09 | Mannesmann Ag | Rolling stand with work rolls |
| EP0371912A1 (en) * | 1988-11-28 | 1990-06-06 | Maschinenfabrik Rieter Ag | Device for monitoring applied force |
| JPH1052716A (en) * | 1996-08-08 | 1998-02-24 | Furukawa Electric Co Ltd:The | Coiling device |
| CN1108202C (en) * | 2000-08-19 | 2003-05-14 | 林红宇 | Cold rolling technology and equipment for machining reinforcing bar with longitudinal ribs |
| JP4879550B2 (en) * | 2005-10-11 | 2012-02-22 | 凸版印刷株式会社 | Work thickness inspection device, work transport device and discharge device |
| CN201644522U (en) * | 2010-01-08 | 2010-11-24 | 山东西王特钢有限公司 | Deformed steel bar bending preventive device |
| CN202779203U (en) * | 2012-09-20 | 2013-03-13 | 东风汽车公司 | Steel belt centering device |
| CN210146651U (en) * | 2019-04-11 | 2020-03-17 | 江西凯安智能股份有限公司 | Copper strips roll-in device with pressure adjustment |
| CN210603235U (en) * | 2019-07-25 | 2020-05-22 | 无锡锡洲电磁线有限公司 | Jumper wire detection device for transposed conductor |
| CN110947767B (en) * | 2019-12-19 | 2021-06-08 | 合肥东方节能科技股份有限公司 | Roller device of deformed steel bar |
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2020
- 2020-10-22 CN CN202011137336.4A patent/CN112191692B/en active Active
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