CN203817057U - Decompression device for pull back balance hydraulic system of vertical rolling mill - Google Patents
Decompression device for pull back balance hydraulic system of vertical rolling mill Download PDFInfo
- Publication number
- CN203817057U CN203817057U CN201420190490.1U CN201420190490U CN203817057U CN 203817057 U CN203817057 U CN 203817057U CN 201420190490 U CN201420190490 U CN 201420190490U CN 203817057 U CN203817057 U CN 203817057U
- Authority
- CN
- China
- Prior art keywords
- hydraulic system
- pull back
- decompression device
- decompressor
- back balance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005096 rolling process Methods 0.000 title abstract description 4
- 230000006837 decompression Effects 0.000 title abstract 8
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000000314 lubricant Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 6
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 244000208734 Pisonia aculeata Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000013528 metallic particle Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a decompression device for a pull back balance hydraulic system of a vertical rolling mill. The decompression device is characterized in that the decompression device (7) is mounted in the pull back balance hydraulic system; the decompression device (7) comprises an oil channel block (1); a decompression valve (2), a hydraulic control valve (3), a hydraulic control valve (4) and an electromagnetism reversing valve (5) are integrated on the oil channel block (1); a pressure measuring joint (6) is further arranged on the decompression device (7). The decompression device for the pull back balance hydraulic system of the vertical rolling mill, once added to the pull back balance hydraulic system, can realize balancing of up pull back force and lower pull back force, so as to reduce abrasion of spherical face cushion, especially the lower spherical face cushion; the service life of the spherical face cushion is prolonged, leakage of lubricant is avoided, and stable operation of the vertical mill is realized.
Description
Technical field
The utility model relates to the pull back decompressor of balanced hydraulic system of a kind of vertical mill, reasonably regulates for equalizing pressure that vertical mill is pulled back.
Background technology
The effect of vertical mill in Plate rolling is for obtaining the width dimensions that steel plate is suitable, uses AWC function the adjusting of roll gap to be realized to the control of width.Its operation principle is: roll gap is closed or (when screw mandrel action) when open mode, hydraulic system is given the equalizing pressure of the hydraulic cylinder 70Bar that pulls back, the roll gap pendulum as-rolled condition while being failure to actuate (be screw mandrel) that puts in place, hydraulic system is given the equalizing pressure of the hydraulic cylinder 100Bar that pulls back, ball ring contact between edger roll and screw mandrel, screw mandrel is pressurizeed by AWC cylinder as push rod, and compensating cylinder pull-back forces acts on the gap of eliminating screw mandrel on upper and lower ball ring.
But this equipment in use has problems always: due to edger roll bearing up-down force inequality, ball ring has wearing and tearing always, and lower peripheral surface pad is larger than upper ball ring wear extent, the life-span is short, the metallic particles of wearing and tearing not only can stop up grease channel, outside the lubricated unstable wear of impact, also can cause pressure to suppress height and leakage of oil.
Summary of the invention
The purpose of this utility model is to provide one to regulate the equalizing pressure of pulling back, realize the equilibrium of forces of pulling back up and down, reduce sphere abrasion, avoid the seepage of lubricating oil, the vertical mill of realizing the stable operation of the vertical mill decompressor of balanced hydraulic system of pulling back.
The purpose of this utility model is achieved in that
The pull back decompressor of balanced hydraulic system of the utility model vertical mill, this decompressor (7) is loaded on pulls back in balanced hydraulic system, described decompressor comprises oil path block, on described oil path block, be integrated with pressure-reducing valve, pilot operated valve device, pilot operated valve device and solenoid directional control valve, and be also provided with pressure measuring tie-in on this decompressor.
Compared with prior art, the beneficial effects of the utility model are:
This vertical mill is pulled back after the decompressor of balanced hydraulic system adds in the balanced hydraulic system of pulling back, can realize the equilibrium of forces of pulling back up and down, thereby reduce the wearing and tearing of ball ring, particularly lower peripheral surface pad, thereby improve the service life of ball ring, avoid the seepage of lubricating oil, realize the stable operation of vertical mill.
Brief description of the drawings
Fig. 1 is the pull back structural representation of decompressor of balanced hydraulic system of the utility model vertical mill.
Fig. 2 is the utility model vertical mill decompressor of balanced hydraulic system hydraulic schematic diagram after being loaded in the balanced hydraulic system of pulling back of pulling back.
Wherein: oil path block 1, pressure-reducing valve 2, pilot operated valve device 3, pilot operated valve device 4, solenoid directional control valve 5, pressure measuring tie-in 6, decompressor 7.
Detailed description of the invention
The utility model relates to the pull back decompressor of balanced hydraulic system of a kind of vertical mill, as Fig. 2, this decompressor 7 is loaded on pulls back in balanced hydraulic system, as Fig. 1, described decompressor 7 comprises oil path block 1, on described oil path block 1, be integrated with pressure-reducing valve 2, pilot operated valve device 3, pilot operated valve device 4 and solenoid directional control valve 5, and be also provided with pressure measuring tie-in 6 on this decompressor 7.
Described pressure-reducing valve 2 is 30 Bar for again reducing pressure hydraulic system to the equalizing pressure of the hydraulic cylinder 70Bar that pulls back, realize the equilibrium of forces of pulling back up and down, reduce the wearing and tearing of ball ring, particularly lower peripheral surface pad, thereby improve the service life of ball ring, avoid the seepage of lubricating oil, realize the stable operation of vertical mill, described pilot operated valve device 3 and pilot operated valve device 4 and solenoid directional control valve 5 are for switching the equalizing pressure of hydraulic system to the hydraulic cylinder 100Bar that pulls back, and pressure measuring tie-in 6 is for detection of the post-decompression equilibrant force of pulling back.
Claims (1)
1. the vertical mill decompressor of balanced hydraulic system of pulling back, it is characterized in that: this decompressor (7) is loaded on pulls back in balanced hydraulic system, described decompressor (7) comprises oil path block (1), on described oil path block (1), be integrated with pressure-reducing valve (2), pilot operated valve device (3), pilot operated valve device (4) and solenoid directional control valve (5), and on this decompressor (7), be also provided with pressure measuring tie-in (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420190490.1U CN203817057U (en) | 2014-04-19 | 2014-04-19 | Decompression device for pull back balance hydraulic system of vertical rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420190490.1U CN203817057U (en) | 2014-04-19 | 2014-04-19 | Decompression device for pull back balance hydraulic system of vertical rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203817057U true CN203817057U (en) | 2014-09-10 |
Family
ID=51472600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420190490.1U Expired - Lifetime CN203817057U (en) | 2014-04-19 | 2014-04-19 | Decompression device for pull back balance hydraulic system of vertical rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203817057U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387507A (en) * | 2017-08-22 | 2017-11-24 | 天津市中重科技工程有限公司 | A kind of hydraulic system of AWC servomechanism installations |
-
2014
- 2014-04-19 CN CN201420190490.1U patent/CN203817057U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387507A (en) * | 2017-08-22 | 2017-11-24 | 天津市中重科技工程有限公司 | A kind of hydraulic system of AWC servomechanism installations |
| CN107387507B (en) * | 2017-08-22 | 2023-06-23 | 中重科技(天津)股份有限公司 | Hydraulic system of AWC servo device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |