CN114160582A - Hydraulic vibration suppression device for vertical vibration of rolling mill - Google Patents
Hydraulic vibration suppression device for vertical vibration of rolling mill Download PDFInfo
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- CN114160582A CN114160582A CN202111375831.3A CN202111375831A CN114160582A CN 114160582 A CN114160582 A CN 114160582A CN 202111375831 A CN202111375831 A CN 202111375831A CN 114160582 A CN114160582 A CN 114160582A
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- hydraulic
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- vibration
- valve
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B28/00—Maintaining rolls or rolling equipment in effective condition
-
- 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
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
Abstract
The invention provides a hydraulic vibration suppression device for vertical vibration of a rolling mill, which comprises the rolling mill, wherein a balance beam is arranged above an upper working roll in the rolling mill to balance the self weight of the upper working roll; the rolling mill vibration suppression device comprises a Y-shaped connecting rod mechanism, a hydraulic cylinder, a horizontal ejector rod, a spring assembly, a base and a guide plate, and is communicated with a vibration suppression hydraulic system to realize the motion control of the vibration suppression device; the device realizes the effective control of vertical vibration in the rolling process by the quasi-zero stiffness vibration absorber consisting of the hydraulic cylinder, the spring assembly and the Y-shaped link mechanism; in addition, the control precision and the yield of the rolling mill are improved through multi-ring cooperative control of the hydraulic cylinder and the vibration suppression hydraulic system.
Description
Technical Field
The invention relates to the technical field of rolling mill vibration control, in particular to a hydraulic vibration suppression device for vertical vibration of a rolling mill.
Background
The vibration generated by the rolling mill during the working process is a problem which is generally existed and expected to be solved in the rolling production of metal plate strips worldwide, and particularly, the vibration of different degrees is easy to occur in high-speed rolling. When no control measure is taken, the flutter of the rolled piece between the racks and the vertical vibration of the racks and the roller system can be obviously observed, and simultaneously, the great impact noise is accompanied, so that the thickness precision and the surface appearance of the rolled piece are influenced, the replacement of parts of equipment is frequent, and the production efficiency and the cost are seriously influenced. The limitations imposed by this problem are now becoming more pronounced as higher speeds and thinner products are required.
Disclosure of Invention
In order to solve the defects of the prior art, the hydraulic vibration suppression device for the vertical vibration of the rolling mill is provided, so that the problem that the vertical vibration of the existing rolling mill seriously affects the quality of rolled pieces can be solved.
The hydraulic vibration suppression device for vertical vibration of the rolling mill comprises the rolling mill, a balance beam is arranged above an upper working roll in the rolling mill to balance the self weight of the upper working roll, the rolling mill also comprises a rack, two vibration suppression devices are symmetrically arranged on the rack, the lower end parts of the vibration suppression devices are connected with the balance beam to realize suppression of the vertical vibration of the upper working roll, and the vibration suppression devices are communicated with a vibration suppression hydraulic system to realize motion control of the vibration suppression devices.
As a further improvement of the above scheme, the vibration suppressing device includes a Y-shaped link mechanism, the Y-shaped link mechanism includes a first link, a second link and a third link, one end of the first link, one end of the second link and one end of the third link are hinged, the other end of the third link is connected to the balance beam, the other ends of the first link and the second link are respectively connected to one end of the horizontal ejector rod, the other end of the horizontal ejector rod is connected to a piston rod of a hydraulic cylinder, and a fixed end of the hydraulic cylinder is fixedly connected to the frame.
As a further improvement of the scheme, a spring assembly is arranged between the horizontal ejector rod and a piston rod of the hydraulic cylinder, so that the horizontal rigidity can be adjusted on line.
As a further improvement of the scheme, the fixed end of the hydraulic cylinder is provided with a base, and the base is fixedly connected with the rack so as to further improve the stability of the hydraulic cylinder.
As a further improvement of the scheme, the horizontal ejector rod is sleeved with a guide plate, and the guide plate is fixed with the rack through a bolt so as to prevent the horizontal ejector rod from being bent and deformed in the movement process.
As a further improvement of the above scheme, the vibration suppression hydraulic system includes a pressure reducing valve, an a port of the pressure reducing valve is communicated with a B port of a first hydraulic control check valve, a B port is communicated with a main pressure oil pipe P, an a port of the first hydraulic control check valve is communicated with a P port of a proportional valve, an a port of the proportional valve is communicated with an a port of a second hydraulic control check valve, the B port is communicated with an a port of a third hydraulic control check valve, the T port is communicated with a main oil return pipe T, a B port of the second hydraulic control check valve is communicated with a rodless cavity of a hydraulic cylinder, a B port of the third hydraulic control check valve is communicated with a rod cavity of the hydraulic cylinder, Y ports of the pressure reducing valve, the first hydraulic control check valve, the second hydraulic control check valve and the third hydraulic control check valve are communicated with an oil drain pipe Y, X ports of the first hydraulic control check valve, the second hydraulic control check valve and the third hydraulic control check valve are communicated with an a port of an electromagnetic ball valve, and a port P of the electromagnetic ball valve is communicated with a control oil pipe X, and a port T is communicated with an oil drainage pipe Y.
As a further improvement of the above scheme, the port B of the second hydraulic control check valve and the rodless cavity of the hydraulic cylinder are communicated with the port a of the buffer overflow valve group, and the port B of the third hydraulic control check valve and the rod cavity of the hydraulic cylinder are communicated with the port B of the buffer overflow valve group.
As a further improvement of the scheme, a check valve is arranged between the T port of the proportional valve and the main oil return pipe T so as to prevent oil from flowing back to the proportional valve from the main oil return pipe T.
As a further improvement of the scheme, a displacement sensor is arranged inside a piston rod of the hydraulic cylinder. The invention has the beneficial effects that:
compared with the prior art, the hydraulic vibration suppression device for vertical vibration of the rolling mill provided by the invention realizes effective control of vertical vibration in the rolling process through the hydraulic cylinder, the spring assembly and the Y-shaped connecting rod mechanism; in addition, the control precision and the yield of the rolling mill are improved through multi-ring cooperative control of the hydraulic cylinder and the vibration suppression hydraulic system.
Drawings
FIG. 1 is a schematic view of the installation of the vibration suppressing device of the present invention;
FIG. 2 is a schematic structural view of a vibration suppressing device according to the present invention;
FIG. 3 is a cross-sectional view of FIG. 1;
FIG. 4 is a schematic diagram of a suppression device according to the present invention;
FIG. 5 is a schematic diagram of a vibration suppressing hydraulic system of the present invention.
Wherein: 1-pressure reducing valve, 2.1-first hydraulic control one-way valve, 2.2-second hydraulic control one-way valve, 2.3-third hydraulic control one-way valve, 3-proportional valve, 4-check valve, 5-electromagnetic ball valve, 6-buffer overflow valve group, 7-displacement sensor, 8-hydraulic cylinder, 9-spring component, 10-Y type link mechanism, 10.1-first link, 10.2-second link, 10.3-third link, 11-horizontal ejector rod, 12-balance beam, 13-frame, 15-upper working roll, 17-vibration suppression device, 18-base and 19-guide plate.
Detailed Description
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:
as shown in fig. 1-5, a hydraulic vibration suppressing device for vertical vibration of a rolling mill comprises a rolling mill, a balance beam 12 is installed above an upper working roll 15 in the rolling mill to balance the self weight of the upper working roll 15, the rolling mill further comprises a frame 13, two vibration suppressing devices 17 are symmetrically arranged on the frame 13, the lower end parts of the vibration suppressing devices 17 are connected with the balance beam 12 to suppress the vertical vibration of the upper working roll 15, and the vibration suppressing devices 17 are communicated with a vibration suppressing hydraulic system to realize the motion control of the vibration suppressing devices 17.
Wherein: the vibration suppression device 17 comprises a Y-shaped link mechanism 10, the Y-shaped link mechanism 10 comprises a first connecting rod 10.1, a second connecting rod 10.2 and a third connecting rod 10.3, one end of the first connecting rod 10.1, one end of the second connecting rod 10.2 and one end of the third connecting rod 10.3 are hinged, the other end of the third connecting rod 10.3 is connected with a balance beam 12, the other end of the first connecting rod 10.1 and the other end of the second connecting rod 10.2 are respectively connected with one end of a horizontal ejector rod 11, the other end of the horizontal ejector rod 11 is connected with a piston rod of a hydraulic cylinder 8, and the fixed end of the hydraulic cylinder 8 is fixedly connected with a frame 13; a spring assembly 9 is arranged between the horizontal ejector rod 11 and a piston rod of the hydraulic cylinder 8 so as to realize online adjustment of horizontal rigidity; a base 18 is arranged at the fixed end of the hydraulic cylinder 8, and the base 18 is fixedly connected with the frame 13 so as to further improve the stability of the hydraulic cylinder 8; the horizontal ejector rod 11 is sleeved with a guide plate 19, and the guide plate 19 and the frame 13 are fixed through bolts so as to prevent the horizontal ejector rod 11 from being bent and deformed in the movement process;
the vibration suppression hydraulic system comprises a pressure reducing valve 1, wherein an A port of the pressure reducing valve 1 is communicated with a B port of a first hydraulic control one-way valve 2.1, the B port is communicated with a main pressure oil pipe P, an A port of the first hydraulic control one-way valve 2.1 is communicated with a P port of a proportional valve 3, an A port of the proportional valve 3 is communicated with an A port of a second hydraulic control one-way valve 2.2, the B port is communicated with an A port of a third hydraulic control one-way valve 2.3, the T port is communicated with a main oil return pipe T, a B port of the second hydraulic control one-way valve 2.2 is communicated with a rodless cavity of a hydraulic cylinder 8, a B port of the third hydraulic control one-way valve 2.3 is communicated with a rod cavity of the hydraulic cylinder 8, Y ports of the pressure reducing valve 1, the first hydraulic control one-way valve 2.1, the second hydraulic control one-way valve 2.2 and the third hydraulic control one-way valve 2.3 are communicated with an oil drain pipe Y, an X port of the first hydraulic control one-way valve 2.1, the second hydraulic control one-way valve 2.2.2.2 and the third hydraulic control one-way valve 2.3 are communicated with an electromagnetic ball valve A port of an electromagnetic ball valve 5, a port P of the electromagnetic ball valve 5 is communicated with a control oil pipe X, and a port T is communicated with an oil drainage pipe Y; the port B of the second hydraulic control one-way valve 2.2 and the rodless cavity of the hydraulic cylinder 8 are communicated with the port A of the buffer overflow valve group 6, and the port B of the third hydraulic control one-way valve 2.3 and the rod cavity of the hydraulic cylinder 8 are communicated with the port B of the buffer overflow valve group 6.
Wherein: a check valve 4 is arranged between the T port of the proportional valve 3 and the main oil return pipe T to prevent oil from flowing back to the proportional valve 3 from the main oil return pipe T; and a displacement sensor 7 is arranged inside a piston rod of the hydraulic cylinder 8.
The invention provides a hydraulic vibration suppression device for vertical vibration of a rolling mill, wherein a vibration suppression hydraulic system has the following specific working principle:
(1) when the upper work roll 15 is vibrated upward,
an electromagnet YVH1 in the electromagnetic ball valve 5 is electrified, ｃA proportional electromagnet YB2 in the proportional valve 3 is electrified, hydraulic oil of ｃA main pressure oil pipe P flows into ｃA rodless cavity of the hydraulic cylinder 8 through ｃA B-A channel of the pressure reducing valve 1, ｃA B-A channel of the first hydraulic control one-way valve 2.1, ｃA P-A channel of the proportional valve 3 and an A-B channel of the second hydraulic control one-way valve 2.2, ｃA piston rod in the hydraulic cylinder 8 drives ｃA spring assembly 9 to compress, and then the first connecting rod 10.1 and the second connecting rod 10.2 are driven to move; oil in a rod cavity in the hydraulic cylinder 8 flows into the main oil return pipe T through a B-A channel of the second hydraulic control one-way valve 2.2, an A-T channel of the proportional valve 3 and an A-B channel of the check valve 4.
The third link 10.3 is driven to move downwards by the cooperation of the first link 10.1 and the second link 10.2, so that the upper working roll 15 is restrained from vibrating upwards.
(2) When the upper work roll 15 is vibrated downward,
an electromagnet YVH1 in the electromagnetic ball valve 5 is electrified, a proportional electromagnet YB2 in the proportional valve 3 is electrified, hydraulic oil of a main pressure oil pipe P flows into a rod cavity of the hydraulic cylinder 8 through a B-A channel of the pressure reducing valve 1, a B-A channel of the first hydraulic control one-way valve 2.1, a P-B channel of the proportional valve 3 and an A-B channel of the third hydraulic control one-way valve 2.3, a piston rod in the hydraulic cylinder 8 drives the spring assembly 9 to extend, and then the first connecting rod 10.1 and the second connecting rod 10.2 are driven to move; oil in a rodless cavity in the hydraulic cylinder 8 flows into the main oil return pipe T through a B-A channel of the second hydraulic control one-way valve 2.2, an A-T channel of the proportional valve 3 and an A-B channel of the check valve 4.
The third link 10.3 is driven to move upwards by the cooperation of the first link 10.1 and the second link 10.2, so that the upper working roll 15 is restrained from vibrating downwards.
The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments may be combined with each other into a new embodiment. The above embodiments are only for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement without departing from the spirit and scope of the present invention should be covered within the technical solutions of the present invention.
Claims (9)
1. The utility model provides a rolling mill vertical vibration's hydraulic pressure device that suppresses, including the rolling mill, install compensating beam (12) above last work roll (15) in the rolling mill to the dead weight of balanced last work roll (15), its characterized in that: the rolling mill further comprises a rack (13), two vibration suppression devices (17) are symmetrically arranged on the rack (13), the lower end portions of the vibration suppression devices (17) are connected with the balance beam (12) to achieve suppression of vibration of the upper working roll (15) in the vertical direction, and the vibration suppression devices (17) are communicated with a vibration suppression hydraulic system to achieve motion control of the vibration suppression devices (17).
2. The hydraulic vibration damping device for vertical vibration of a rolling mill according to claim 1, wherein: the vibration suppression device (17) comprises a Y-shaped link mechanism (10), the Y-shaped link mechanism (10) comprises a first connecting rod (10.1), a second connecting rod (10.2) and a third connecting rod (10.3), one ends of the first connecting rod (10.1), the second connecting rod (10.2) and the third connecting rod (10.3) are hinged, the other end of the third connecting rod (10.3) is connected with a balance beam (12), the other ends of the first connecting rod (10.1) and the second connecting rod (10.2) are respectively connected with one end of a horizontal ejector rod (11), the other end of the horizontal ejector rod (11) is connected with a piston rod of a hydraulic cylinder (8), and the fixed end of the hydraulic cylinder (8) is fixedly connected with a rack (13).
3. The hydraulic vibration damping device for vertical vibration of a rolling mill according to claim 2, wherein: a spring assembly (9) is arranged between the horizontal ejector rod (11) and a piston rod of the hydraulic cylinder (8) so as to realize online adjustment of horizontal rigidity.
4. The hydraulic vibration damping device for vertical vibration of a rolling mill according to claim 2, wherein: the stiff end of pneumatic cylinder (8) is provided with base (18), base (18) and frame (13) fixed connection to further promote the stability of pneumatic cylinder (8).
5. The hydraulic vibration damping device for vertical vibration of a rolling mill according to claim 2, wherein: the horizontal ejector rod (11) is sleeved with a guide plate (19), and the guide plate (19) is fixed with the rack (13) through bolts so as to prevent the horizontal ejector rod (11) from generating flexural deformation in the movement process.
6. The hydraulic vibration damping device for vertical vibration of a rolling mill according to claim 1, wherein: the vibration suppression hydraulic system comprises a pressure reducing valve (1), wherein an A port of the pressure reducing valve (1) is communicated with a B port of a first hydraulic control one-way valve (2.1), a B port of the pressure reducing valve is communicated with a main pressure oil pipe P, an A port of the first hydraulic control one-way valve (2.1) is communicated with a P port of a proportional valve (3), an A port of the proportional valve (3) is communicated with an A port of a second hydraulic control one-way valve (2.2), a B port of the second hydraulic control one-way valve is communicated with an A port of a third hydraulic control one-way valve (2.3), a T port of the first hydraulic control one-way valve is communicated with a main oil return pipe T, a B port of the second hydraulic control one-way valve (2.2) is communicated with a rodless cavity of a hydraulic cylinder (8), a B port of the third hydraulic control one-way valve (2.3) is communicated with a rod cavity of the hydraulic cylinder (8), a Y port of the pressure reducing valve (1), a first hydraulic control one-way valve (2.1), a second hydraulic control one-way valve (2.2.2) and a Y port of the third hydraulic control one-way valve (2.3) are communicated with a Y pipe, and a first oil drain valve (2.1), X ports of the second hydraulic control one-way valve (2.2) and the third hydraulic control one-way valve (2.3) are communicated with an A port of the electromagnetic ball valve (5), a P port of the electromagnetic ball valve (5) is communicated with the control oil pipe X, and a T port is communicated with the oil drainage pipe Y.
7. The hydraulic vibration damping device for vertical vibration of rolling mills according to claim 5, wherein: the port B of the second hydraulic control one-way valve (2.2) and the rodless cavity of the hydraulic cylinder (8) are communicated with the port A of the buffer overflow valve group (6), and the port B of the third hydraulic control one-way valve (2.3) and the rod cavity of the hydraulic cylinder (8) are communicated with the port B of the buffer overflow valve group (6).
8. The hydraulic vibration damping device for vertical vibration of rolling mills according to claim 5, wherein: a check valve (4) is arranged between a T port of the proportional valve (3) and the main oil return pipe T, so that oil is prevented from flowing back to the proportional valve (3) from the main oil return pipe T.
9. The hydraulic vibration damping device for vertical vibration of a rolling mill according to claim 1, wherein: and a displacement sensor (7) is arranged inside a piston rod of the hydraulic cylinder (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111375831.3A CN114160582B (en) | 2021-11-19 | 2021-11-19 | Hydraulic vibration suppression device for vertical vibration of rolling mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111375831.3A CN114160582B (en) | 2021-11-19 | 2021-11-19 | Hydraulic vibration suppression device for vertical vibration of rolling mill |
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| CN114160582A true CN114160582A (en) | 2022-03-11 |
| CN114160582B CN114160582B (en) | 2023-09-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114655885A (en) * | 2022-05-27 | 2022-06-24 | 太原理工大学 | Full hydraulic drive's wide and thick board flatting mill material loading lift platform |
| CN115059729A (en) * | 2022-07-13 | 2022-09-16 | 杭州电子科技大学 | Hierarchical vibration damper based on electromagnetism and hydraulic damping |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114655885A (en) * | 2022-05-27 | 2022-06-24 | 太原理工大学 | Full hydraulic drive's wide and thick board flatting mill material loading lift platform |
| CN115059729A (en) * | 2022-07-13 | 2022-09-16 | 杭州电子科技大学 | Hierarchical vibration damper based on electromagnetism and hydraulic damping |
| CN115059729B (en) * | 2022-07-13 | 2023-07-18 | 杭州电子科技大学 | Graded vibration damper based on electromagnetic and hydraulic damping |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114160582B (en) | 2023-09-26 |
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