CN102536958A - Vertical roller mill buffering device - Google Patents
Vertical roller mill buffering device Download PDFInfo
- Publication number
- CN102536958A CN102536958A CN2012100441058A CN201210044105A CN102536958A CN 102536958 A CN102536958 A CN 102536958A CN 2012100441058 A CN2012100441058 A CN 2012100441058A CN 201210044105 A CN201210044105 A CN 201210044105A CN 102536958 A CN102536958 A CN 102536958A
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- piston
- rotor housing
- bank rotor
- damping device
- roll grinder
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Abstract
The invention relates to a vertical roller mill buffering device which comprises a guide framework part and a buffering cylinder part fixedly connected with the guide framework part through a connection flange, wherein the buffering cylinder part comprises a squeezing head, a large piston, a limiting piston rod, a cylinder bottom, a front cylinder body, a middle plate, a rear cylinder body and a piston; the front cylinder body is sleeved on the large piston; a sealing guide sleeve is arranged at the end of the front cylinder body; the front cylinder body and the rear cylinder body are welded on and connected with the middle plate respectively; a plurality of small throttling holes are formed on the limiting piston rod between the middle plate and the end of the large piston; a hydraulic oil hole is formed on the middle plate; the piston is positioned at the outer side of the middle plate; and the cylinder bottom is fixed outside the piston. Through adoption of the vertical roller mill buffering device adopting the structure, nitrogen is convenient to fill and detect and the work load is reduced.
Description
Technical field:
The present invention relates to the vertical roll grinder field, especially a kind of vertical roll grinder damping device.
Background technique:
At present, on the large-scale roller type vertical mill equipment of manufacture of cement factory,, rigid buffering of spring or leather bag type hydraulic buffer have been adopted in order to cushion the radial impact power that grinding roller produces in running.Because vertical roll grinder is in running, the percussion action of grinding roller is frequent, and impact force is very big; Cause spring and leather bag often to damage, working life is low, needs frequent maintain and replace; Have a strong impact on operation rate, increased plant maintenance maintenance load and factory's operation cost.
Retrieve the utility model patent that the patent No. is 201186230Y, it discloses a kind of large-scale vertical tumbling mill damping device at present.This large-scale vertical tumbling mill damping device comprises cushion dashpot part and guide frame part; Guide frame partly comprises collision guide rod, support body and ball rod; Wherein collide guide rod and support body and flexibly connect, support body is fixedly connected with connecting plate, and the lower end and the ball rod of collision guide rod flexibly connect.This damping device adopts airbag structure, and this air bag is positioned at the upper end of cushion dashpot part near the guide frame part, inflated with nitrogen in air bag.The damping device of this kind structure is unfavorable for detecting the nitrogen amount in the air bag, and changes very trouble, need be with guide frame part dismounting successively.Because vertical roll grinder damping device structure is huge, element size and weight are very big, and the workload of therefore changing air bag is bigger, are unfavorable for changing.Simultaneously, because air bag damages easily, brought inconvenience in actual use.
Summary of the invention:
In view of above-mentioned technical problem, it is a kind of through one-way valve being installed conveniently to fill the vertical roll grinder damping device of nitrogen at cylinder bottom that the present invention provides.
The technical problem of throttling buffering when this invention has further solved collision guide rod bump; The technical problem that the piston speed of response is fast; The cylinder bottom accurate positioning is technical problem easily; The technical problem that the big piston guidance quality is good; The technical problem of big piston and front-bank rotor housing, piston and rear-bank rotor housing sealing; The good technical problem of spacing piston rod guiding; The technical problem of protection one-way valve; Big piston is connected the technical problem of tightness with squeeze head.
For solving the problems of the technologies described above; Technological scheme of the present invention is following: the vertical roll grinder damping device; Comprise that guide frame partly reaches the cushion dashpot part that partly is fixedly connected through adpting flange with guide frame, said cushion dashpot partly comprises squeeze head, big piston, spacing piston rod and cylinder bottom, and said cushion dashpot part also comprises front-bank rotor housing, intermediate plate and rear-bank rotor housing; Front-bank rotor housing is set in the big piston outside, and the sealing guide pin bushing is equipped with in the front-bank rotor housing end; Big piston has center hole near intermediate plate one end, has central through bore on the spacing piston rod, and spacing piston rod has flange near the end of big piston, and spacing piston rod is loaded on the set screw that also passes through on the gland in the center hole of big piston and locatees; The spacing piston rod the other end passes intermediate plate and locatees through the positioning screwn on the positioning plate; Front-bank rotor housing is connected through welding with intermediate plate respectively with rear-bank rotor housing; On the spacing piston rod between intermediate plate and the big piston end, have several throttling pore, have the hydraulic pressure oilhole on the intermediate plate; Said cushion dashpot part also comprises a piston, and piston is positioned at the downside of intermediate plate, and the piston outer fixing is equipped with cylinder bottom, and the one-way valve that is used for inflated with nitrogen is housed on the said cylinder bottom.
Preferably, said intermediate plate along the circumferential direction is evenly equipped with several reducing damping holes that is used for the throttling buffering.
Preferably, said piston is the aluminium piston.
Preferably, said cylinder bottom lower end has chamfering, and the reaming that matches with this chamfering is arranged on the rear-bank rotor housing, and the cylinder bottom outside is through nut and cap location.
Preferably, said big piston is with stepped guide sleeve outward, and stepped guide sleeve is through the front-bank rotor housing step location near the guide frame part.
Preferably, said guide sleeve is a Cu-base composites.
Preferably, between said big piston and the front-bank rotor housing, between piston and the rear-bank rotor housing seal ring is housed all.
Preferably, between gland on the spacing piston rod and the big piston guide plate is housed.
Preferably, the valve protection lid is housed outside the said one-way valve.
Preferably, be fixedly connected through high-strength bolt between said big piston and the squeeze head.
Adopt this technological scheme, the damping device of vertical roll grinder is positioned at the bottom of cushion dashpot part, is convenient to nitrogen and detects, and can make things convenient for filling of nitrogen through one-way valve.Reducing damping hole on the intermediate plate can play the effect of throttling buffering when grinding roller impacts; Aluminium piston structure is light, friction is little, quick action; Cylinder bottom is installed simple, accurate positioning; Guide sleeve can play good leading role to the motion of big piston, and the Cu-base composites guidance quality of employing is good, long service life; Seal ring then can partly seal cushion dashpot, prevents the leakage of hydraulic oil and nitrogen; Guide plate can play good leading role to spacing piston rod; The valve protection lid can be protected one-way valve; Big piston has then improved with high-strength bolt between the squeeze head and has been connected tightness.
Description of drawings:
Further specify the present invention below in conjunction with accompanying drawing and embodiment.
Fig. 1 is a sectional drawing of the present invention.
Fig. 2 is the partial enlarged drawing of A part among Fig. 1.
Fig. 3 be among Fig. 1 M-M to view.
Embodiment:
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
Shown in Fig. 1 to Fig. 3, the vertical roll grinder damping device of this invention comprises cushion dashpot part 16 and guide frame part 17, and cushion dashpot part 16 is fixedly connected through adpting flange 7 with guide frame part 17.
Cushion dashpot part 16 comprises squeeze head 4, big piston 5, front-bank rotor housing 8, is positioned at guide sleeve 6, spacing piston rod 9, intermediate plate 10, rear-bank rotor housing 11, piston 12 and cylinder bottom 13 that front-bank rotor housing 8 is set in big piston 5 outsides, passes through front-bank rotor housing 8 steps location.Squeeze head 4 is connected through high-strength bolt 35 with big piston 5; The end that front-bank rotor housing 8 is connected with guide frame part 17 is equipped with the sealing guide pin bushing; The sealing guide pin bushing comprises first seal ring 31 near guide sleeve 6; Axle is equipped with this special envelope 32 in first seal ring, 31 outsides, and axle is equipped with axle with U circle 33 with these special envelope 32 outsides, and axle encloses 33 outsides with U dust ring 34 is housed.Big piston 5 has center hole near intermediate plate 10 1 ends, and big piston 5 radially has oil circuit hole 30.Have central through bore on the spacing piston rod 9, spacing piston rod 9 has flange near the end of big piston 5, and spacing piston rod 9 is loaded on the set screw that also passes through on the gland 28 in the center hole of big piston 5 and locatees.Spacing piston rod 9 the other ends pass intermediate plate 10 and locate through the positioning screwn on the positioning plate 26; As can be seen from Figure 2; Through screw pad 27 is arranged on the positioning plate, distance L is 0.2mm between pad 27 and reducing damping hole 25 ends, so that the oil circuit circulation.After spacing piston rod 9 installed, front-bank rotor housing 8 was connected through welding with intermediate plate 10 respectively with rear-bank rotor housing 11, on the spacing piston rod 9 between intermediate plate 10 and big piston 5 ends, has several throttling pore 24.Front-bank rotor housing 8 and big piston 5 and intermediate plate 10, rear-bank rotor housing 11, piston 12 and intermediate plate 10 form hydraulic fluid chamber 15 respectively, have the hydraulic pressure oilhole 18 that leads to front-bank rotor housing 8 hydraulic fluid chambers 15 on the intermediate plate 10, so that fill hydraulic oil.As can be seen from Figure 3; Along the circumferential direction have 6 reducing damping holes 25 on the intermediate plate 10; Certainly the quantity of this reducing damping hole 25 can be provided with according to the structure needs; Reducing damping hole 25 greater than the aperture near rear-bank rotor housing 11 hydraulic fluid chambers 15, can play the effect of throttling buffering near the aperture of front-bank rotor housing 8 hydraulic fluid chambers 15 when collision guide rod 1 impacts.Piston 12 is positioned at the downside of intermediate plate 10, and the interior hexagonal screw plug 23 of draining the oil is housed in the middle of the piston 12, can be used for the hydraulic oil in the discharge liquid pumping cavity 15, so that change hydraulic oil.Cylinder bottom 13 is equipped with in piston 12 lower ends, and cylinder bottom 13 lower ends have chamfering 22, and the reaming 36 that matches with this chamfering 22 is arranged on rear-bank rotor housing 11 ends; Can prevent that like this cylinder bottom 13 is toward the motion of piston 12 directions; Cylinder bottom 13 outsides are screwed with nut and cap 19, have outside thread on this nut and the cap 19, have internal thread in the rear-bank rotor housing 11 end reamings 36; Can fix cylinder bottom 13 through stubborn the closing of inside and outside two screw threads, prevent that it is toward another direction motion.Cylinder bottom 13, piston 12 and rear-bank rotor housing 11 form nitrogen chamber 14, and the one-way valve 20 that is used for inflated with nitrogen is housed on the said cylinder bottom 13, and one-way valve 20 outsides are equipped with valve protection lid 21 through screw thread.
Frequent because of big piston 5 to-and-fro motion, so guide sleeve 6 adopts Cu-base composites, guidance quality is good, long service life.Second seal ring 37 is housed between big piston 5 and the front-bank rotor housing 8; Be equipped with between piston 12 and the rear-bank rotor housing 11 between the 3rd seal ring 38, cylinder bottom 13 and the rear-bank rotor housing 11 the 4th seal ring 39 is housed; To keep the good sealing property of this device, prevent the leakage of nitrogen or hydraulic oil.
Between gland 28 on the spacing piston rod 9 and the big piston 5 guide plate 29 is housed, this guide plate 29 can play better leading role to the motion of spacing piston rod 9.
When vertical roll grinder moves; The radial impact power that the grinding roller (not shown) produces is loaded on the collision guide rod 1 of guide frame part 17; Promote collision guide rod 1 and move down, impact force is loaded on the big piston 5 of cushion dashpot part 16, promote big piston 5 and move down through ball rod 3 and squeeze head 4; Hydraulic oil in cushion dashpot part 16 front-bank rotor housings 8 hydraulic fluid chambers 15 is compressed in rear-bank rotor housing 11 hydraulic fluid chambers 15 through the throttling pore 24 on the spacing piston rod 9, reducing damping hole 25; Because cushion dashpot part 16 internal capacities dwindle, the oil pressure of rear-bank rotor housing 11 hydraulic fluid chambers 15 raises, and then promotion piston 12 moves downward.This piston 12 adopts high-strength aluminium pistons, and is in light weight, friction is little, and speed of response is fast.The nitrogen chamber 14 that has been filled with certain pressure nitrogen is compressed back pressure and raises; Thereby produce a reverse thrust and offset the radial impact power that vertical roll grinder when operation grinding roller produces, the radial impact power that grinding roller produces in the time of can be with vertical Roller grinder operation is reduced to zero.When the radial impact power of grinding roller generation disappears; Promote the load disappearance that big piston 5 moves down; Make the hydraulic oil oil pressure moment reduction in the hydraulic fluid chamber 15; High pressure oil moment of rear-bank rotor housing 11 inner chambers is back in front-bank rotor housing 8 chambeies through the reducing damping hole 25 on intermediate throughholes, throttling pore 24 and the intermediate plate 10 of spacing piston rod 9, promotes big piston 5 and moves up, and then promote grinding roller and reset.
Whole damping device is installed in outside the Vertical Mill equipment, and because of this damping device structure changes the rear end inflated with nitrogen into, the user is detection at any time preliminary filling nitrogen pressure or the nitrogen end added inflated with nitrogen as required.This damping device is in structural design, and all there is bigger advantage operational safety and Maintenance and Repair aspect, safeguards the replacing workload for the user has reduced, and has practiced thrift maintenance fund, has improved the business economic benefit.
More than show and described basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (10)
1. the vertical roll grinder damping device comprises that guide frame partly reaches the cushion dashpot part that partly is fixedly connected through adpting flange with guide frame, and said cushion dashpot partly comprises squeeze head, big piston, spacing piston rod and cylinder bottom, it is characterized in that:
Said cushion dashpot part comprises that also front-bank rotor housing, intermediate plate and rear-bank rotor housing, front-bank rotor housing are set in the big piston outside, and the sealing guide pin bushing is equipped with in the front-bank rotor housing end;
Big piston has center hole near intermediate plate one end, has central through bore on the spacing piston rod, and spacing piston rod has flange near the end of big piston, and spacing piston rod is loaded on the set screw that also passes through on the gland in the center hole of big piston and locatees;
The spacing piston rod the other end passes intermediate plate and locatees through the positioning screwn on the positioning plate; Front-bank rotor housing is connected through welding with intermediate plate respectively with rear-bank rotor housing; On the spacing piston rod between intermediate plate and the big piston end, have several throttling pore, have the hydraulic pressure oilhole on the intermediate plate;
Said cushion dashpot part also comprises a piston, and piston is positioned at the downside of intermediate plate, and the piston outer fixing is equipped with cylinder bottom, and the one-way valve that is used for inflated with nitrogen is housed on the said cylinder bottom.
2. according to the said vertical roll grinder damping device of claim 1, it is characterized in that: said intermediate plate along the circumferential direction is evenly equipped with several reducing damping holes that is used for the throttling buffering.
3. according to the said vertical roll grinder damping device of claim 2, it is characterized in that: said piston is the aluminium piston.
4. according to the said vertical roll grinder damping device of claim 3, it is characterized in that: said cylinder bottom lower end has chamfering, and the reaming that matches with this chamfering is arranged on the rear-bank rotor housing, and the cylinder bottom outside is through nut and cap location.
5. according to each said vertical roll grinder damping device in the claim 1 to 4, it is characterized in that: said big piston is with stepped guide sleeve outward, and stepped guide sleeve is through the front-bank rotor housing step location near the guide frame part.
6. according to the said vertical roll grinder damping device of claim 5, it is characterized in that: said guide sleeve is a Cu-base composites.
7. according to the said vertical roll grinder damping device of claim 1, it is characterized in that: between said big piston and the front-bank rotor housing, between piston and the rear-bank rotor housing seal ring is housed all.
8. according to the said vertical roll grinder damping device of claim 1, it is characterized in that: between gland on the said spacing piston rod and the big piston guide plate is housed.
9. according to the said vertical roll grinder damping device of claim 1, it is characterized in that: the valve protection lid is equipped with in the said one-way valve outside.
10. according to the said vertical roll grinder damping device of claim 1, it is characterized in that: be fixedly connected through high-strength bolt between said big piston and the squeeze head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210044105.8A CN102536958B (en) | 2012-02-24 | 2012-02-24 | Vertical roller mill buffering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210044105.8A CN102536958B (en) | 2012-02-24 | 2012-02-24 | Vertical roller mill buffering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102536958A true CN102536958A (en) | 2012-07-04 |
| CN102536958B CN102536958B (en) | 2016-02-03 |
Family
ID=46344684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210044105.8A Active CN102536958B (en) | 2012-02-24 | 2012-02-24 | Vertical roller mill buffering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102536958B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547827A (en) * | 2018-06-29 | 2018-09-18 | 北京精密机电控制设备研究所 | A kind of built-in gas-liquid mixed buffering retraction type high-speed cylinder |
| CN112780633A (en) * | 2021-01-06 | 2021-05-11 | 安徽鼎图液压设备有限公司 | Double-cylinder hydraulic oil cylinder |
| CN112648258B (en) * | 2020-12-29 | 2024-04-26 | 江苏恒立液压股份有限公司 | Buffer cylinder before and after oil-gas mixing |
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| JPS5554704A (en) * | 1978-10-16 | 1980-04-22 | Kawanishi Auto Eng Kk | Buffering device of luggage carrier for dump truck |
| CN1212338A (en) * | 1997-09-25 | 1999-03-31 | Smc株式会社 | Cylinder with speed of control mechanism |
| CN2615406Y (en) * | 2003-04-29 | 2004-05-12 | 天津特精液压股份有限公司 | Piston type single-action damper hydraulic cylinder |
| EP1626184A2 (en) * | 2004-08-14 | 2006-02-15 | Schuler Automation GmbH & Co. KG | Hydraulic device |
| CN101050782A (en) * | 2007-04-30 | 2007-10-10 | 安徽合力股份有限公司 | 1-3.5T gap buffer lift oil cylinder with one-way valve at cylinder bottom |
| CN101060953A (en) * | 2004-12-10 | 2007-10-24 | 多宾有限公司 | Low impact spot welding cylinder using single or double piston |
| CN201186230Y (en) * | 2008-04-18 | 2009-01-28 | 辽阳新力源电站矿山设备有限公司 | Large-sized vertical roll grinder buffering mechanism |
| CN202468543U (en) * | 2012-02-24 | 2012-10-03 | 常州轩达液压机电设备有限公司 | Buffer device for vertical roller mill |
-
2012
- 2012-02-24 CN CN201210044105.8A patent/CN102536958B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5554704A (en) * | 1978-10-16 | 1980-04-22 | Kawanishi Auto Eng Kk | Buffering device of luggage carrier for dump truck |
| CN1212338A (en) * | 1997-09-25 | 1999-03-31 | Smc株式会社 | Cylinder with speed of control mechanism |
| CN2615406Y (en) * | 2003-04-29 | 2004-05-12 | 天津特精液压股份有限公司 | Piston type single-action damper hydraulic cylinder |
| EP1626184A2 (en) * | 2004-08-14 | 2006-02-15 | Schuler Automation GmbH & Co. KG | Hydraulic device |
| CN101060953A (en) * | 2004-12-10 | 2007-10-24 | 多宾有限公司 | Low impact spot welding cylinder using single or double piston |
| CN101050782A (en) * | 2007-04-30 | 2007-10-10 | 安徽合力股份有限公司 | 1-3.5T gap buffer lift oil cylinder with one-way valve at cylinder bottom |
| CN201186230Y (en) * | 2008-04-18 | 2009-01-28 | 辽阳新力源电站矿山设备有限公司 | Large-sized vertical roll grinder buffering mechanism |
| CN202468543U (en) * | 2012-02-24 | 2012-10-03 | 常州轩达液压机电设备有限公司 | Buffer device for vertical roller mill |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547827A (en) * | 2018-06-29 | 2018-09-18 | 北京精密机电控制设备研究所 | A kind of built-in gas-liquid mixed buffering retraction type high-speed cylinder |
| CN108547827B (en) * | 2018-06-29 | 2020-04-10 | 北京精密机电控制设备研究所 | Built-in gas-liquid mixing buffering retraction type high-speed cylinder |
| CN112648258B (en) * | 2020-12-29 | 2024-04-26 | 江苏恒立液压股份有限公司 | Buffer cylinder before and after oil-gas mixing |
| CN112780633A (en) * | 2021-01-06 | 2021-05-11 | 安徽鼎图液压设备有限公司 | Double-cylinder hydraulic oil cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102536958B (en) | 2016-02-03 |
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Address after: No.389, Huanghe West Road, Xinbei District, Changzhou City, Jiangsu Province Patentee after: CHANGZHOU XUANDA HYDRAULIC ELECTRICAL AND MECHANICAL EQUIPMENT Co.,Ltd. Address before: 213003, 8, Chun Ying Road, five star street, Bell Tower District, Jiangsu, Changzhou Patentee before: CHANGZHOU XUANDA HYDRAULIC ELECTRICAL AND MECHANICAL EQUIPMENT Co.,Ltd. |