CN104265821A - Damping device for vibration attenuation of upper rollers and lower rollers of rolling mills - Google Patents
Damping device for vibration attenuation of upper rollers and lower rollers of rolling mills Download PDFInfo
- Publication number
- CN104265821A CN104265821A CN201410508962.8A CN201410508962A CN104265821A CN 104265821 A CN104265821 A CN 104265821A CN 201410508962 A CN201410508962 A CN 201410508962A CN 104265821 A CN104265821 A CN 104265821A
- Authority
- CN
- China
- Prior art keywords
- chamber
- strut
- damping device
- lower roll
- air vent
- 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.)
- Pending
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Classifications
-
- 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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0218—Mono-tubular units
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0227—Telescopic characterised by the piston construction
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0281—Details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a damping device for vibration attenuation of upper rollers and lower rollers of rolling mills. The damping device can reduce the repair load and provide stable supporting force for the rollers, and comprises a casing with one end opened. At least two cavities are arranged in the casing, air ducts are arranged between adjacent cavities, and a supporting rod in airtight fit with the first cavity is arranged in the first cavity. Sliding devices are arranged in the air ducts and are in airtight fit with the inner walls of the air ducts, and air is filled in each cavity. The cavity disposed behind the first cavity has a buffer effect and the damping force of the first cavity on the supporting rod changes gently so that the supporting rod provides stable supporting force for the upper rollers and the lower rollers, and the purpose of vibration attenuation of the upper rollers and the lower rollers can be achieved. Compared with the existing hydraulic cylinder, the damping device does not need piping and has no oil leakage phenomenon, thereby being little in the repair load.
Description
Technical field
The present invention relates to a kind of damping device, for the vibration damping work of the upper and lower roll of milling train.
Background technique
On steel rolling production-line, the very important role of milling train performer, but the vibration that the upper and lower roll of milling train produces in moving process directly can have influence on the quality of steel rolling product.
Upper and lower roll is supported to eliminate the vibration of roll at present mainly through oil hydraulic cylinder or damping device; wherein oil hydraulic cylinder can provide stable support force for two rolls in upper and lower roll moving process; but oil hydraulic cylinder also needs pipe arrangement; often there will be the phenomenon of leakage of oil; frequency of maintenance is high, causes the manufacturing efficiency of steel rolling product low.And the concrete structure of existing damping device mainly: run through in damping device body and have a passage, one opening end of passage passes through end bracket enclosed, another opening end is provided with a strut, described strut is connected with the inner wall sealing of this opening end described, strut, between passage and end cap, define the chamber of sealing, in chamber, be full of compressible gas.When upper and lower roll shop building is in increase process gradually, the gas in strut compression chamber, chamber inner pressure increases by force, and the large i.e. damping force of pressure change that strut is subject to gas becomes large.When opening degree between upper and lower roll is very large, the stroke of strut is very large, the damping force be subject to is very large, when upper and lower roll starts closed, the support force that roll is subject to strut is very large, along with the spacing of upper and lower roll reduces gradually, the damping force that strut is subject to reduces gradually, and the support force that roll is subject to strut also can correspondingly diminish.Can find out that the damping force of strut alters a great deal, damping device can not provide stable support force for roll, and the effect certainly for elimination roller vibration is not fine.
For ensureing quality and the manufacturing efficiency of steel rolling product, not only to reduce frequency of maintenance, and stable support force will be provided for roll.
Summary of the invention
For the problems referred to above, the invention provides and a kind ofly can not only reduce frequency of maintenance and the damping device for the upper and lower roll vibration damping of milling train of stable support power can be provided for roll.
For achieving the above object, the present invention is used for the damping device of the upper and lower roll vibration damping of milling train, comprises the housing of one end open, be disposed with at least two chambers in described housing, be provided with air vent between adjacent described chamber, the opening end of described housing is connected with first chamber, wherein
Be provided with a strut in first described chamber, described strut moves along first chamber center line and extends to described hull outside, described strut and first chamber air-tight fit;
Be provided with sliding device in described air vent, air-tight fit between described sliding device and described air vent inwall, in each described chamber, be respectively arranged with gas.
Further, in described housing, be provided with two described chambers, in first chamber and second chamber, be respectively arranged with the first gas and the second gas.
Further, described sliding device is slide blocks, is provided with the first seal ring between described slide blocks and described air vent, to make to reach air-tight fit between slide blocks and air vent inwall.
Further, described sliding device is piston, described piston comprises piston rod and is installed in the piston sheet of piston rod one end, described piston rod is arranged in described air vent, and described piston rod is provided with the second seal ring, to make to reach air-tight fit between piston rod and described air vent inwall, described piston sheet is arranged in second chamber.
Further, described first gas and the second gas are nitrogen.
Further, the sheathed pilot seal ring in described strut periphery, for being threaded between described pilot seal ring and described first chamber inner wall, between described strut and described pilot seal ring, being provided with the 3rd seal ring, reaching air-tight fit to make described strut and first chamber
The damping device that the present invention is used for the upper and lower roll vibration damping of milling train has at least two chambers, because the chamber after first chamber has buffer function to the power that first chamber is subject to, make the pressure change in first chamber mild, also respective change is mild for the damping force that first chamber produces strut, thus make strut provide more stable support force for upper and lower roll, reach the object to upper and lower roll vibration damping.And the present invention is relative to existing oil hydraulic cylinder, does not need pipe arrangement, also there will not be oil leakage phenomenon, so a little repair.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the structural representation of embodiment 2;
Fig. 3 is the structural representation of embodiment 3.
Embodiment
Below in conjunction with Figure of description, the present invention will be further described.
Embodiment 1
As shown in Figure 1, the present embodiment is used for the damping device of the upper and lower roll vibration damping of milling train, comprises the housing 1 of one end open, is disposed with two chambers in described housing, be respectively first chamber 31 and be provided with air vent 4 between second chamber, 32, first chamber and second chamber.
First chamber 31 is connected with the opening end of housing, and in first chamber, the centerline direction of first chamber is provided with a strut 2, described strut extends to hull outside.Be air-tight fit between described strut and first chamber.
A kind of preferred air-tight fit structure is: a sheathed pilot seal ring 5 in described strut periphery, for being threaded between described pilot seal ring and described first chamber inner wall, the 3rd seal ring 6 is provided with, to make to reach air-tight fit between described strut and first chamber inner wall between described strut and described pilot seal ring.When strut is subject to thrust or pulling force, strut can move along the center line of first chamber.
In air vent, be provided with sliding device, be air-tight fit between described sliding device and described air vent inwall.In the present embodiment, the concrete structure of sliding device is a piston, and described piston comprises piston rod 71 and is installed in the piston sheet 72 of piston rod one end.Described piston rod is arranged in described air vent, and described piston rod is provided with the second seal ring 8, and to make to reach air-tight fit between piston rod and described air vent inwall, described piston sheet is arranged in second chamber.
The first gas and the second gas is respectively arranged with in first chamber and second chamber, described first gas and the second gas are nitrogen, when described first gas and the second gas are when being subject to identical compressive force, the decrement of the first gas equals the decrement of the second gas.
The damping device that the present embodiment is used for the upper and lower roll vibration damping of milling train has two chambers, when strut is subject to the thrust of roll, strut compresses the first gas in first chamber, first gas is compressed, strut is subject to the damping force of the first gas in first chamber in movement process, and the direction of damping force is contrary with the direction of roll thrust.Compression due to strut makes the pressure in first chamber be greater than pressure in second chamber, piston moves to second chamber, the volume of first chamber increases, pressure reduces, the volume of second chamber reduces, pressure increases, until when the pressure that the pressure that first chamber produces piston and second chamber produce piston is identical, piston stops to second chamber movement.In whole said process, owing to there being the buffer function of second chamber, first chamber changes mild to the damping force that strut produces, thus makes strut provide more stable support force for upper and lower roll, reaches the object to upper and lower roll vibration damping.And existing damping device only has a chamber, can not cushion the pressure in chamber, this chamber can produce very large damping force, due to changing greatly of damping force to strut, strut can not provide stable support force for upper and lower roll, thus the effect of vibration damping is not fine.In sum, the damping force change that the present embodiment produces strut relative to existing damping device is comparatively mild, and strut provides more stable damping force for upper and lower roll, thus makes upper and lower roll reach the object of vibration damping.
Embodiment 2
As shown in Figure 2, the present embodiment is used for the damping device of the upper and lower roll vibration damping of milling train, comprise the housing 1 of one end open, three chambers are disposed with in described housing, be respectively first chamber 3a, second chamber 3b and the 3rd chamber 3c, be provided with the first air vent 4a between first chamber and second chamber, between second chamber and the 3rd chamber, be provided with the second air vent 4b.
First chamber is connected with the opening end of housing, and in first chamber, the centerline direction of first chamber is provided with a strut 2, described strut extends to hull outside.Be air-tight fit between described strut and first chamber.
A kind of preferred air-tight fit structure is: a sheathed pilot seal ring 5 in described strut periphery, for being threaded between described pilot seal ring and described first chamber inner wall, the 3rd seal ring 6 is provided with, to make to reach air-tight fit between described strut and first chamber inner wall between described strut and described pilot seal ring.When strut is subject to thrust or pulling force, strut can move along the center line of first chamber.
Being provided with sliding device in first air vent and the second air vent, is air-tight fit between described sliding device and described air vent inwall.In the present embodiment, the concrete structure of sliding device is slide blocks, is provided with the first seal ring between described slide blocks and described air vent, to make to reach air-tight fit between slide blocks and air vent inwall.Slide blocks in first air vent is the first slide blocks 7a, and the slide blocks in the second air vent is the second sliding shoe 7b.The first seal ring between first slide blocks and the first air vent is 8a, and the first seal ring between the second sliding shoe and the second air vent is 8b.
The first gas, the second gas and the 3rd gas is respectively arranged with in first chamber, second chamber and the 3rd chamber.Described first gas, the second gas and the 3rd gas are nitrogen.
The damping device that the present embodiment is used for the upper and lower roll vibration damping of milling train has three chambers, when strut is subject to the thrust of roll, strut compresses the first gas in first chamber, first gas is compressed, strut is subject to the damping force of the first gas in first chamber in movement process, and the direction of damping force is contrary with the direction of roll thrust.Compression due to strut makes the pressure in first chamber be greater than pressure in second chamber, first slide blocks moves to second chamber, the volume of first chamber increases, pressure reduces, the volume of second chamber reduces, pressure increases, in second chamber, the pressure of the second gas to the second sliding shoe to be greater than in the 3rd chamber the 3rd gas to the pressure of the second sliding shoe, the second sliding shoe slides to the 3rd chamber, and the volume of the 3rd chamber reduces, pressure becomes large.Until when the pressure that produces the second sliding shoe of pressure, second chamber that the pressure that produces the first slide blocks of the first chamber and second chamber produce the first slide blocks and the 3rd chamber all reach balance to the pressure that the second slide block produces, the first slide blocks, the second sliding shoe stop motion.In whole said process, owing to there being the buffer function of second chamber and the 3rd chamber, first chamber changes mild to the damping force that strut produces, thus makes strut provide more stable support force for upper and lower roll, reaches the object to upper and lower roll vibration damping.And existing damping device only has a chamber, can not cushion the pressure in chamber, this chamber can produce very large damping force, due to changing greatly of damping force to strut, strut can not provide stable support force for upper and lower roll, thus the effect of vibration damping is not fine.In sum, the damping force change that the present embodiment produces strut relative to existing damping device is comparatively mild, and strut provides more stable damping force for upper and lower roll, thus makes upper and lower roll reach the object of vibration damping.
Can find out that the latus rectum of each air vent is less than the latus rectum of each chamber in fig. 2.
Embodiment 3
The difference of the present embodiment and above-described embodiment 2 is only: the latus rectum of each air vent equals the latus rectum of each chamber.
The number of the chamber arranged in the present invention is more, and the buffer function of other chambers to first chamber is more obvious, and the damping force change that first chamber produces strut is milder, thus provides support force more stably for upper and lower roll.
Above; be only preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should define with claim is as the criterion.
Claims (6)
1. for a damping device for the upper and lower roll vibration damping of milling train, it is characterized in that: the housing comprising one end open, in described housing, be disposed with at least two chambers, air vent is provided with between adjacent described chamber, the opening end of described housing is connected with first chamber, wherein
Be provided with a strut in first described chamber, described strut moves along first chamber center line and extends to described hull outside, described strut and first chamber air-tight fit;
Be provided with sliding device in described air vent, air-tight fit between described sliding device and described air vent inwall, in each described chamber, be respectively arranged with gas.
2. the damping device for the upper and lower roll vibration damping of milling train according to claim 1, is characterized in that: be provided with two described chambers in described housing, is respectively arranged with the first gas and the second gas in first chamber and second chamber.
3. the damping device for the upper and lower roll vibration damping of milling train according to claim 2, it is characterized in that: described sliding device is slide blocks, the first seal ring is provided with, to make to reach air-tight fit between slide blocks and air vent inwall between described slide blocks and described air vent.
4. the damping device for the upper and lower roll vibration damping of milling train according to claim 2, it is characterized in that: described sliding device is piston, described piston comprises piston rod and is installed in the piston sheet of piston rod one end, described piston rod is arranged in described air vent, and described piston rod is provided with the second seal ring, to make to reach air-tight fit between piston rod and described air vent inwall, described piston sheet is arranged in second chamber.
5. the damping device for the upper and lower roll vibration damping of milling train according to claim 2, is characterized in that: described first gas and the second gas are nitrogen.
6. the damping device for the upper and lower roll vibration damping of milling train according to claim 1, it is characterized in that: the sheathed pilot seal ring in described strut periphery, for being threaded between described pilot seal ring and described first chamber inner wall, between described strut and described pilot seal ring, be provided with the 3rd seal ring, reach air-tight fit to make described strut and first chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410508962.8A CN104265821A (en) | 2014-09-28 | 2014-09-28 | Damping device for vibration attenuation of upper rollers and lower rollers of rolling mills |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410508962.8A CN104265821A (en) | 2014-09-28 | 2014-09-28 | Damping device for vibration attenuation of upper rollers and lower rollers of rolling mills |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104265821A true CN104265821A (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410508962.8A Pending CN104265821A (en) | 2014-09-28 | 2014-09-28 | Damping device for vibration attenuation of upper rollers and lower rollers of rolling mills |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265821A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269892A (en) * | 2015-06-23 | 2017-01-04 | 宝山钢铁股份有限公司 | The heavy plate mill of filler particles damping and fill method thereof |
| CN111425212A (en) * | 2020-04-16 | 2020-07-17 | 张振增 | Hob group control hydraulic monitoring system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4909488A (en) * | 1988-06-03 | 1990-03-20 | Stabilus Gmbh | Gas spring having a plurality of pressure chambers arranged one behind another |
| CN101307806A (en) * | 2008-06-09 | 2008-11-19 | 顿力集团有限公司 | Dual spindle gas spring and working method |
| CN201250874Y (en) * | 2008-08-29 | 2009-06-03 | 李坚 | Damping device |
| CN201794982U (en) * | 2010-07-06 | 2011-04-13 | 邵阳兴达精密机械制造有限公司 | Nano lubricating medium nitrogen spring |
| CN201875038U (en) * | 2010-11-12 | 2011-06-22 | 邵阳市通达汽车零部件制造有限公司 | Gas spring of vehicle seat |
| CN203656006U (en) * | 2013-12-26 | 2014-06-18 | 常州市南泰气弹簧有限公司 | Gas spring used for auxiliary seat for old people |
| CN204099477U (en) * | 2014-09-28 | 2015-01-14 | 中冶华天工程技术有限公司 | For the damping device of the upper and lower roll vibration damping of milling train |
-
2014
- 2014-09-28 CN CN201410508962.8A patent/CN104265821A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4909488A (en) * | 1988-06-03 | 1990-03-20 | Stabilus Gmbh | Gas spring having a plurality of pressure chambers arranged one behind another |
| CN101307806A (en) * | 2008-06-09 | 2008-11-19 | 顿力集团有限公司 | Dual spindle gas spring and working method |
| CN201250874Y (en) * | 2008-08-29 | 2009-06-03 | 李坚 | Damping device |
| CN201794982U (en) * | 2010-07-06 | 2011-04-13 | 邵阳兴达精密机械制造有限公司 | Nano lubricating medium nitrogen spring |
| CN201875038U (en) * | 2010-11-12 | 2011-06-22 | 邵阳市通达汽车零部件制造有限公司 | Gas spring of vehicle seat |
| CN203656006U (en) * | 2013-12-26 | 2014-06-18 | 常州市南泰气弹簧有限公司 | Gas spring used for auxiliary seat for old people |
| CN204099477U (en) * | 2014-09-28 | 2015-01-14 | 中冶华天工程技术有限公司 | For the damping device of the upper and lower roll vibration damping of milling train |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269892A (en) * | 2015-06-23 | 2017-01-04 | 宝山钢铁股份有限公司 | The heavy plate mill of filler particles damping and fill method thereof |
| CN111425212A (en) * | 2020-04-16 | 2020-07-17 | 张振增 | Hob group control hydraulic monitoring system |
| CN111425212B (en) * | 2020-04-16 | 2022-08-16 | 张振增 | Hob group control hydraulic monitoring system |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150107 |
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| RJ01 | Rejection of invention patent application after publication |