CN103831301A - Method of solving failures of universal mill retaining plate system - Google Patents
Method of solving failures of universal mill retaining plate system Download PDFInfo
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- CN103831301A CN103831301A CN201410083686.5A CN201410083686A CN103831301A CN 103831301 A CN103831301 A CN 103831301A CN 201410083686 A CN201410083686 A CN 201410083686A CN 103831301 A CN103831301 A CN 103831301A
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- oil cylinder
- universal mill
- piston rod
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Abstract
The invention relates to a method of solving failures of a universal mill retaining plate system. The method includes the steps of selecting a large-diameter cylinder, increasing diameter of a cylinder pole, and increasing pressure level; prolonging service life of a piston rod by heat treatment processes of tempering, quenching and chromate coating; making a counter slot in a piston for buffering; designing a cylinder connection flange in a square shape and directly mounting the cylinder on a housing; providing a cylinder piston rod position detector, mounting an inductance proximity switch on the cylinder, placing a detection iron block at the tail of the cylinder, and manufacturing an inductance proximity guard; providing an oil supply spot on the lower portion of a front clamp block of the cylinder to improve lubrication between the clamp block and the housing and decrease friction. The method has the advantages that jacking force of the retaining plate cylinder is increased, strength and stability of a hydraulic system is improved, the detector is reasonably set, and accordingly failures of the universal mill retaining plate system can be solved effectively, accident rate is decreased and labor productivity is improved.
Description
Technical field
The present invention relates to metallurgical technical field of steel rolling, relate in particular to a kind of method that solves the universal mill holding plate system failure.
Background technology
In the process of Rolling With Universal Mill steel billet, the impulsive force of steel billet breaker roll is very large, need to utilize the tight roll chock breaker roll of holding plate wedge head rest to lock, prevent that roll from moving axially, but impulsive force will then act on holding plate, cause that holding plate cylinder piston rod fracture, holding plate are not opened, back piston bar tailing screw flight fracture of root, the leakage of oil of cylinder tail end cover, holding plate cylinder piston rod cannot return in time or return not in place, holding plate oil cylinder clamping block and stretch out the faults such as long dieback bearing block.Universal mill holding plate cylinder piston rod position detecting device-inductance approach switch position arranges unreasonablely in addition, often occurs detection signal incomplete phenomena, causes the passive shutdown of universal mill to produce steel scrap, affects the normal operation of whole production line.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, a kind of method that solves the universal mill holding plate system failure is provided, by increasing holding plate oil cylinder top power, checkout gear is rationally arranged, improve the strength and stability of hydraulic system, effectively solve universal mill holding plate fault, reduce accident rate.
In order to achieve the above object, the present invention realizes by the following technical solutions:
The method that solves the universal mill holding plate system failure, comprises the steps:
(1) select major diameter oil cylinder, increase cylinder rod bar footpath, improve pressure rating;
(2) utilize modified, quenching, chrome-faced Technology for Heating Processing to improve piston rod service life;
(3) on piston, open undercut groove buffering;
(4) oil cylinder adpting flange is designed to square, oil cylinder is directly installed on memorial archway;
(5) cylinder piston rod position detecting device is set, inductance approach switch is retrofitted to above oil cylinder, the position of detecting buting iron is placed on to the afterbody of oil cylinder, and makes inductance approach switch protective cover;
(6) increase oil-feeding points in oil cylinder front clamp piece bottom, improve the lubricating condition between clamp and memorial archway, reduce frictional force.
Compared with prior art, the invention has the beneficial effects as follows:
By increasing holding plate oil cylinder top power, improve the strength and stability of hydraulic system, checkout gear is rationally arranged, effectively solve the universal mill holding plate system failure, reduce accident rate, reduce the loss of spare part and grease, reduce labor strength, raise labour productivity.
Brief description of the drawings
Fig. 1 is partial structurtes schematic diagram of the present invention.
In figure: 1. oil cylinder 2. oil cylinder adpting flange 3. fuel feed pump 4. sense switch buting iron
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
Seeing Fig. 1, is partial structurtes schematic diagram of the present invention, comprises oil cylinder 1, oil cylinder adpting flange 2, fuel feed pump 3, sense switch buting iron 4, and concrete steps of the present invention are as follows:
1. adopt novel oil cylinder 1, add large tank 1 cylinder diameter, bar footpath and pressure rating.When universal mill holding plate has locking effect, a wedging perfect condition of oil cylinder 1 piston rod front end is that the gap width between roll is zero, but reality does not often reach, when entering steel in a flash, the impulsive force of steel billet breaker roll makes roll chock motion, with the T shape head collision of holding plate oil cylinder 1, impulsive force is very big.Increase the effectively play of Control Shaft bearing of top power of oil cylinder 1, fundamentally reduce rate of breakdown, the present invention increases after the key dimension of oil cylinder 1, oil cylinder 1 top power increases, intensity and the job stability of oil cylinder 1 are greatly improved, effectively reduce the axial movement value of bearing block in rolling process, improved Rolling With Universal Mill precision.
2. improve piston rod service life, when the oil cylinder 1 power effect component in the vertical direction that withstands shocks excessive, and oil cylinder 1 is in the time of oil-feed state, piston rod easily produces tired, fracture from the weakest position, oil cylinder of the present invention 1 piston rod adopts the unimach of high strength, high tenacity and through heat treatment and surface treatment, improve intensity, wear-resisting and shock resistance, increase the service life.
3. cancel trimmer valve, on piston, open undercut groove buffering.In rolling process, piston rod causes extruding to the fluid of oil cylinder 1 fore-end, and now fluid is pinned by Solenoid ball valve, thus once forming the phenomenon that builds the pressure, therefore must in hydraulic control circuit, increase energy storage equipment, play the effect of buffering, shock-absorbing, but in system, original trimmer valve often damages, job insecurity and be difficult for maintain and replace, in the present invention, original trimmer valve is cancelled, realize buffering effect with the structure of opening undercut groove on piston, simple in structure, reliable and stable.
4. cancel holding plate oil cylinder 1 counter flange, change oil cylinder 1 adpting flange 2 into squared design, oil cylinder 1 is directly installed on memorial archway, realizes oil cylinder 1 quick-replaceable.
5. oil cylinder 1 piston rod position checkout gear is rationally set.Inductance approach switch is installed in holding plate hydraulic system; effect is that oil cylinder 1 piston rod position state is carried out to actual detection; ensure device security; in original system, inductance approach switch installation site is on counter flange above glycerine pipe; can produce because glycerine pipe is loosening shake; detection signal is inaccurate; the present invention is retrofitted to inductance approach switch above oil cylinder 1; the position of detecting buting iron 4 is changed to the afterbody of oil cylinder 1 by glycerine pipe top simultaneously; and make inductance approach switch protective cover, avoid oil cylinder 1 to move detecting element is caused to damage.
6. increase fuel feed pump 3 in oil cylinder 1 front clamp piece bottom, improve the lubricating condition between clamp and memorial archway, reduce frictional force.
The present invention, by increasing holding plate oil cylinder 1 top power, improves the strength and stability of hydraulic system, and checkout gear is rationally arranged, and efficiently solves the universal mill holding plate system failure, reduces accident rate.
Following examples are implemented under taking technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention are not limited to following embodiment.In following embodiment, method therefor is conventional method if no special instructions.
It is as follows that [embodiment 1] application the present invention carries out improved step to the large-scale factory of Anshan iron and steel plant universal mill holding plate jacking mechanism:
(1) redesign oil cylinder 1 size, former oil cylinder 1 key dimension is 63/36/63X70mm, and new oil cylinder 1 key dimension is: 100/56/56X70mm.
(2) oil cylinder 1 piston rod adopts 42CrMo through modified, quenching, and through chrome-faced, improves intensity, wearability and impact resistance, increases the service life.
(3) cancel trimmer valve, on piston, open undercut groove buffering.
(4) cancel holding plate oil cylinder 1 counter flange, change oil cylinder adpting flange 2 into squared design, oil cylinder 1 is directly installed on memorial archway, realizes oil cylinder 1 quick-replaceable.
(5) inductance approach switch is retrofitted to above oil cylinder 1, the afterbody of oil cylinder 1 is changed to by glycerine pipe top in the position of detecting buting iron 4 simultaneously, and make inductance approach switch protective cover, avoid oil cylinder 1 to move detecting element is caused to damage.
(6) increase fuel feed pump 3 in oil cylinder front clamp piece bottom, improve the lubricating condition between clamp and memorial archway, reduce frictional force.
Through above development, the clamping force of oil cylinder 1 is increased to 160KN by original 63KN, and the strength and stability of system is greatly improved, and has effectively reduced the axial movement value of bearing block in rolling process, has improved the rolling accuracy of universal mill.
Claims (1)
1. the method that solves the universal mill holding plate system failure, is characterized in that, comprises the steps:
1) select major diameter oil cylinder, increase cylinder rod bar footpath, improve pressure rating;
2) utilize modified, quenching, chrome-faced Technology for Heating Processing to improve piston rod service life;
3) on piston, open undercut groove buffering;
4) oil cylinder adpting flange is designed to square, oil cylinder is directly installed on memorial archway;
5) cylinder piston rod position detecting device is set, inductance approach switch is retrofitted to above oil cylinder, the position of detecting buting iron is placed on to the afterbody of oil cylinder, and makes inductance approach switch protective cover;
6) increase oil-feeding points in oil cylinder front clamp piece bottom, improve the lubricating condition between clamp and memorial archway, reduce frictional force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083686.5A CN103831301B (en) | 2014-03-06 | 2014-03-06 | The method for solving the universal mill holding plate system failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083686.5A CN103831301B (en) | 2014-03-06 | 2014-03-06 | The method for solving the universal mill holding plate system failure |
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| Publication Number | Publication Date |
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| CN103831301A true CN103831301A (en) | 2014-06-04 |
| CN103831301B CN103831301B (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410083686.5A Active CN103831301B (en) | 2014-03-06 | 2014-03-06 | The method for solving the universal mill holding plate system failure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111842513A (en) * | 2020-07-24 | 2020-10-30 | 广东韶钢松山股份有限公司 | Apron board oil cylinder transmission mechanism and steel splitting driving device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0829151A (en) * | 1994-07-12 | 1996-02-02 | Sumitomo Metal Ind Ltd | Displacement detection device for rolling horizontal roll |
| CN201482797U (en) * | 2009-08-25 | 2010-05-26 | 莱芜钢铁股份有限公司 | Anti-loose device for snap ring of large-sized universal mill |
| CN201988566U (en) * | 2011-03-31 | 2011-09-28 | 鞍钢股份有限公司 | Detection device of rolling mill retaining plate |
-
2014
- 2014-03-06 CN CN201410083686.5A patent/CN103831301B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0829151A (en) * | 1994-07-12 | 1996-02-02 | Sumitomo Metal Ind Ltd | Displacement detection device for rolling horizontal roll |
| CN201482797U (en) * | 2009-08-25 | 2010-05-26 | 莱芜钢铁股份有限公司 | Anti-loose device for snap ring of large-sized universal mill |
| CN201988566U (en) * | 2011-03-31 | 2011-09-28 | 鞍钢股份有限公司 | Detection device of rolling mill retaining plate |
Non-Patent Citations (1)
| Title |
|---|
| 杨莉华: "万能轧机中保持板的故障分析与处理", 《液压气动与密封》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111842513A (en) * | 2020-07-24 | 2020-10-30 | 广东韶钢松山股份有限公司 | Apron board oil cylinder transmission mechanism and steel splitting driving device |
| CN111842513B (en) * | 2020-07-24 | 2022-05-20 | 广东韶钢松山股份有限公司 | Apron board oil cylinder transmission mechanism and steel-separating driving device |
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| Publication number | Publication date |
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| CN103831301B (en) | 2017-09-29 |
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