CN101602063B - Combined type hydraulic cylinder design capable of supplying positive and negative bending roller force - Google Patents
Combined type hydraulic cylinder design capable of supplying positive and negative bending roller force Download PDFInfo
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- CN101602063B CN101602063B CN2008100500740A CN200810050074A CN101602063B CN 101602063 B CN101602063 B CN 101602063B CN 2008100500740 A CN2008100500740 A CN 2008100500740A CN 200810050074 A CN200810050074 A CN 200810050074A CN 101602063 B CN101602063 B CN 101602063B
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Abstract
The invention relates to a combined type hydraulic cylinder design structure capable of supplying positive and negative bending roller force, comprising end cylinder bodies 1, pistons 2, a middle cylinder body 3, a dustproof ring 4, connecting rods 5, flange covers 8, a guide strap 9 and seal elements 11, wherein the end cylinder bodies are symmetrically installed at both ends of the middle cylinder body and provided with respective oil passages; the pistons are arranged in all cylinder barrels; the seal elements are configured on the pistons, and one end surface of each piston 2 is provided with a counter bore 7; all the pistons are fixed by the flange covers, and different annular concave grooves are arranged at the inner diameter of the flange covers and used for being respectively provided with the dustproof ring and the guide strap; the connecting rods are inserted into the counter bores of the two pistons which are adjacently, symmetrically and reversely installed; a space limited by the connecting rods can contain a lug boss of an upper roller bearing support 6 or a lower roller bearing support 10 so that the two pistons which are adjacently, symmetrically and reversely installed can supply positive and negative bending roller force; and the same pistons are installed in the cylinder barrel of the middle cylinder body back to back and share an oil passage of the middle cylinder body. The invention has simple structure and few seal steps and auxiliary pipelines and reduces the control degree.
Description
Technical field
The invention belongs to the rolling metal equipment technical field, especially a kind of combined type hydraulic cylinder design that positive and negative bending roller force is provided.
Background technology
Be extensive use of the hydraulic bending roll method in the modern metal plate and belt milling train and carried out the control of plate shape, the hydraulic bending roll method acts on cylinder pressure the roller neck place exactly makes roll produce addition bend, with the compensation roll variation of carrying roll gap is arranged, and obtains good profile.Provide the hydraulic cylinder of bending roller force to be called the roller hydraulic cylinder, adopt the roller cylinder to provide the device of bending roller force to be called hydraulic roller-bending device.
The present hydraulic roller-bending device ubiquity complex structure of using in the milling train, disadvantage such as sealing part is many, and the hydraulic cylinder interface is many, and auxiliary piping is many, and also the hydraulic control system that is correspondingly adopted is also complicated.
Summary of the invention
In order to address the above problem, the invention provides a kind of combined type hydraulic cylinder design that positive and negative bending roller force is provided, this project organization is simple, and sealing part is few, and the hydraulic cylinder interface is many, and auxiliary piping is few, reduces the complexity of hydraulic control.
For achieving the above object, the present invention adopts following technical scheme:
The described combined type hydraulic cylinder design that positive and negative bending roller force is provided, its method for designing comprises following content:
I, combined type hydraulic cylinder comprise four single-action hydraulic cylinders, are distributed on the detachable cylinder body, and detachable cylinder body is divided into two end cylinder bodies and a central housing, on two end cylinder bodies a hydraulic cylinder are arranged respectively, and two hydraulic cylinders are arranged on the central housing;
The cylinder barrel and the piston of the hydraulic cylinder on II, the hydraulic cylinder of end on the cylinder body and the central housing all keep concentric, and both connect by coupling bar by piston;
III, single-action hydraulic cylinder only are provided with logical hydraulic fluid port in plunger shaft, and oil pressure is not born in its bar chamber, so between piston rod and the blind flange, between blind flange and the cylinder body high-pressure sealing ring need not be set, to reduce sealing part and seepage;
Between IV, blind flange and the piston dust ring is set;
V, coupled hydraulic cylinder piston transmit motion mutually by coupling bar, and in the piston motion process, coupling bar is power by compression, and the size of power equals hydraulic cylinder back pressure and the frictional force that passive piston overcomes;
VI, linearity for guaranteeing that piston moves, the tilting moment that the weakening coupling bar produces when promoting piston is provided with guidance tape to the influence of motion between blind flange and piston;
VII, blind flange limited piston extreme position, make piston when extreme position and the oil cylinder bottom surface keep certain clearance, avoid coupling bar to be subjected to too big compression stress;
After VIII, four single-action hydraulic cylinder groups are a unit, can make its hydraulic system reduce the consumption of proportioning valve and reversal valve.
Described just providing, the combined type hydraulic cylinder design of negative bending roller force, its project organization is by the end cylinder body, piston, central housing, dust ring, coupling bar, blind flange, guidance tape, seal constitutes, its middle-end cylinder body is installed in the two ends of central housing symmetrically, be provided with asphalt channel separately on end cylinder body and the central housing, in the cylinder barrel of end cylinder body and central housing, identical piston is installed all, the design of an end face of configuration seal and piston has counterbore on the piston, each piston that is installed in the cylinder barrel is fixed by blind flange, and the design of blind flange internal diameter has the groove of different ring-types to be used for installing respectively dust ring and guidance tape; Be plugged with coupling bar in the piston counterbore that the two-phase adjacency pair claims oppositely to install, the space that coupling bar limited can hold the boss of roll bearing seat or bottom roll bearing block, makes the two-phase adjacency pair claim the piston of oppositely installing that positive and negative bending roller force can be provided; Identical piston is installed back-to-back, the asphalt channel of the shared central housing of two-piston in the cylinder barrel of central housing.
Because adopt aforesaid technical scheme, the present invention has following superiority:
1, the roller hydraulic cylinder is a single-action hydraulic cylinder, and the hydraulic cylinder hydraulic fluid port reduces half, and correspondingly fluid pressure line obviously reduces.
2, oil pressure is not born in the bar chamber, so between piston rod and the blind flange, between blind flange and the cylinder body high-pressure sealing ring need not be set, and has reduced sealing part, reduces the chance of hydraulic cylinder seepage.
3, after positive and negative roller hydraulic cylinder connection is a unit, can make the consumption of its hydraulic system minimizing hydraulic valve, specifically, traditional relatively roller hydraulic system, its proportioning valve and reversal valve consumption can reduce half.
4, cylinder body is divided into end cylinder body and central housing, and dismounting is convenient in very convenient installation.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the piston structure schematic diagram;
Among the above-mentioned figure: 1-holds cylinder body; The 2-piston; The 3-central housing; The 4-dust ring; The 5-coupling bar; The last roll bearing seat of 6-; The 7-counterbore; The 8-blind flange; The 9-guidance tape; The 10-bottom roll bearing block; The 11-seal.
The specific embodiment
In conjunction with Fig. 1,2, of the present invention just providing, the combined type hydraulic cylinder project organization of negative bending roller force is by end cylinder body 1, piston 2, central housing 3, dust ring 4, coupling bar 5, blind flange 8, guidance tape 9, seal 11 constitutes, its middle-end cylinder body 1 is installed in the two ends of central housing 3 symmetrically, be provided with asphalt channel separately on end cylinder body 1 and the central housing 3, in the cylinder barrel of end cylinder body 1 and central housing 3, identical piston 2 is installed all, the design of an end face of configuration seal 11 and piston 2 has counterbore 7 on the piston 2, each piston 2 that is installed in the cylinder barrel is fixing by blind flange 8, and the design of blind flange 8 internal diameters has the groove of different ring-types to be used for installing respectively dust ring 3 and guidance tape 9; Be plugged with coupling bar 5 in piston 2 counterbores 7 that the two-phase adjacency pair claims oppositely to install, the space that coupling bar 5 is limited can hold the boss of roll bearing seat 6 or bottom roll bearing block 10, makes the two-phase adjacency pair claim the piston of oppositely installing 2 that positive and negative bending roller force can be provided; Identical piston 2 is installed in the cylinder barrel of central housing 3 back-to-back, the asphalt channel of two-piston 2 shared central housings 3, piston 2 bar chambeies are not provided with asphalt channel.
Combinations thereof formula cylinder design structure is based on following method for designing:
1, combined type hydraulic cylinder comprises four single-action hydraulic cylinders, is distributed on the detachable cylinder body, and detachable cylinder body is divided into two end cylinder bodies and a central housing, on two end cylinder bodies a hydraulic cylinder is arranged respectively, and two hydraulic cylinders are arranged on the central housing;
2, the cylinder barrel and the piston of the hydraulic cylinder on the hydraulic cylinder of end on the cylinder body and the central housing all keep concentric, and both connect by coupling bar by piston;
3, single-action hydraulic cylinder only is provided with logical hydraulic fluid port in plunger shaft, and oil pressure is not born in its bar chamber, so between piston rod and the blind flange, between blind flange and the cylinder body high-pressure sealing ring need not be set, to reduce sealing part and seepage;
4, between blind flange and the piston dust ring is set;
5, coupled hydraulic cylinder piston transmits motion mutually by coupling bar, and in the piston motion process, coupling bar is power by compression, and the size of power equals hydraulic cylinder back pressure and the frictional force that passive piston overcomes;
6, for guaranteeing the linearity of piston motion, the tilting moment that the weakening coupling bar produces when promoting piston is provided with guidance tape to the influence of motion between blind flange and piston;
7, blind flange limited piston extreme position, make piston when extreme position and the oil cylinder bottom surface keep certain clearance, avoid coupling bar to be subjected to too big compression stress;
8, after four single-action hydraulic cylinder groups are a unit, can make its hydraulic system reduce the consumption of proportioning valve and reversal valve.
The present invention can be widely used in the roll-bending device of strip-mill strip, such as the work roll bending device that is used for four roller strip-mill strips.
Four roller strip-mill strips the work roll bending device generally form by 16 roller hydraulic cylinders, be divided on 4 groups of four window side that are laid in mill housing, each group structure is identical sees Fig. 1.
In Fig. 1, have four hydraulic cylinders, be followed successively by the negative hydraulic cylinder of bending of top working roll from top to bottom, the just curved hydraulic cylinder of top working roll, the just curved hydraulic cylinder of bottom working roll, the negative curved hydraulic cylinder of bottom working roll is wherein just being bent shared central housing of hydraulic cylinder and asphalt channel for two.The flank of last roll bearing seat 6 is between the two-piston 2, piston 2 spacings that flank thickness is limited less than coupling bar 5.Bottom roll bearing block 10 reasons are identical.
When working roll being carried out just bend, hydraulic fluid port connects pressure oil on the central housing 3, hydraulic fluid port on the end cylinder body 1 takes back oil, the piston 2 and the coupling bar 5 of the positive and negative roller hydraulic cylinder of top roll move upward together, piston 2 acts on roll bearing seat 6 and produces just curved power, the piston 2 and the coupling bar 5 of the positive and negative roller hydraulic cylinder of lower roll move downward together, and piston 2 acts on bottom roll bearing block 10 and produces just curved power.
When working roll being born when curved, hydraulic fluid port takes back oil on the central housing 3, hydraulic fluid port on the end cylinder body 1 connects pressure oil, the piston 2 and the coupling bar 5 of the positive and negative roller hydraulic cylinder of top roll move downward together, piston 2 acts on roll bearing seat 6 and produces negative curved power, the piston 2 and the coupling bar 5 of the positive and negative roller hydraulic cylinder of lower roll move upward together, and piston 2 acts on bottom roll bearing block 10 and produces negative curved power.
After positive and negative roller hydraulic cylinder piston connected, two hydraulic cylinders were realized interlock, positive and negative roller hydraulic cylinder are seen as the two-way cylinder of a combination in hydraulic system, can reduce the consumption of hydraulic valve like this.
Claims (2)
1. combined type hydraulic cylinder that positive and negative bending roller force can be provided, it is characterized in that: its combined type hydraulic cylinder method for designing comprises following content:
I, combined type hydraulic cylinder comprise four single-action hydraulic cylinders, are distributed on the detachable cylinder body, and detachable cylinder body is divided into two end cylinder bodies and a central housing, on two end cylinder bodies a hydraulic cylinder are arranged respectively, and two hydraulic cylinders are arranged on the central housing;
The cylinder barrel and the piston of the hydraulic cylinder on II, the hydraulic cylinder of end on the cylinder body and the central housing all keep concentric, and both connect by coupling bar by piston;
III, single-action hydraulic cylinder only are provided with logical hydraulic fluid port in plunger shaft, and oil pressure is not born in its bar chamber, so between piston rod and the blind flange, between blind flange and the cylinder body high-pressure sealing ring need not be set, to reduce sealing part and seepage;
Between IV, blind flange and the piston dust ring is set;
V, coupled hydraulic cylinder piston transmit motion mutually by coupling bar, and in the piston motion process, coupling bar is power by compression, and the size of power equals hydraulic cylinder back pressure and the frictional force that passive piston overcomes;
VI, linearity for guaranteeing that piston moves, the tilting moment that the weakening coupling bar produces when promoting piston is provided with guidance tape to the influence of motion between blind flange and piston;
VII, blind flange limited piston extreme position, make piston when extreme position and the oil cylinder bottom surface keep certain clearance, avoid coupling bar to be subjected to too big compression stress;
After VIII, four single-action hydraulic cylinder groups are a unit, can make its hydraulic system reduce the consumption of proportioning valve and reversal valve.
2. one kind just can provide, the combined type hydraulic cylinder of negative bending roller force, it is characterized in that: this combined type hydraulic cylinder project organization is by end cylinder body (1), piston (2), central housing (3), dust ring (4), coupling bar (5), blind flange (8), guidance tape (9), seal (11) constitutes, its middle-end cylinder body (1) is installed in the two ends of central housing (3) symmetrically, be provided with asphalt channel separately on end cylinder body (1) and the central housing (3), in the cylinder barrel of end cylinder body (1) and central housing (3), identical piston (2) is installed all, the end face design that piston (2) is gone up configuration seal (11) and piston (2) has counterbore (7), each piston (2) that is installed in the cylinder barrel is fixing by blind flange (8), and the design of blind flange (8) internal diameter has the groove of different ring-types to be used for installing respectively dust ring (3) and guidance tape (9); Be plugged with coupling bar (5) in piston (2) counterbore (7) that the two-phase adjacency pair claims oppositely to install, the space that coupling bar (5) is limited can hold the boss of roll bearing seat (6) or bottom roll bearing block (10), makes the two-phase adjacency pair claim the piston of oppositely installing (2) that positive and negative bending roller force can be provided; Identical piston (2) is installed back-to-back, the asphalt channel of the shared central housing of two-piston (2) (3) in the cylinder barrel of central housing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100500740A CN101602063B (en) | 2008-06-13 | 2008-06-13 | Combined type hydraulic cylinder design capable of supplying positive and negative bending roller force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100500740A CN101602063B (en) | 2008-06-13 | 2008-06-13 | Combined type hydraulic cylinder design capable of supplying positive and negative bending roller force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101602063A CN101602063A (en) | 2009-12-16 |
| CN101602063B true CN101602063B (en) | 2011-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100500740A Expired - Fee Related CN101602063B (en) | 2008-06-13 | 2008-06-13 | Combined type hydraulic cylinder design capable of supplying positive and negative bending roller force |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189115B (en) * | 2010-03-11 | 2014-12-03 | 上海宝信软件股份有限公司 | Method for switching positive roller and negative roller of working roll |
| CN112178003B (en) * | 2020-09-16 | 2023-07-21 | 马鞍山钢铁股份有限公司 | Working roll locking device of leveling machine bending roll cylinder and assembly method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3938362A (en) * | 1973-02-12 | 1976-02-17 | Ab Metalform | Apparatus for the plastic working of material |
| CN1340388A (en) * | 2000-08-29 | 2002-03-20 | 株式会社日立制作所 | Rolling mill and its rolling method |
| CN101147916A (en) * | 2007-10-31 | 2008-03-26 | 朱惠兴 | Hydraulic roller-bending device |
-
2008
- 2008-06-13 CN CN2008100500740A patent/CN101602063B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3938362A (en) * | 1973-02-12 | 1976-02-17 | Ab Metalform | Apparatus for the plastic working of material |
| CN1340388A (en) * | 2000-08-29 | 2002-03-20 | 株式会社日立制作所 | Rolling mill and its rolling method |
| CN101147916A (en) * | 2007-10-31 | 2008-03-26 | 朱惠兴 | Hydraulic roller-bending device |
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| CN101602063A (en) | 2009-12-16 |
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Granted publication date: 20110209 Termination date: 20160613 |