CN102536958B - Vertical roller mill buffering device - Google Patents
Vertical roller mill buffering device Download PDFInfo
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- CN102536958B CN102536958B CN201210044105.8A CN201210044105A CN102536958B CN 102536958 B CN102536958 B CN 102536958B CN 201210044105 A CN201210044105 A CN 201210044105A CN 102536958 B CN102536958 B CN 102536958B
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Abstract
The present invention relates to a kind of vertical roller mill buffering device, the cushion dashpot part comprising guide framework part and be fixedly connected with by adpting flange with guide framework part, described cushion dashpot part comprises squeeze head, large piston, limiting piston bar and cylinder bottom, described cushion dashpot part also comprises front-bank rotor housing, intermediate plate and rear-bank rotor housing, front-bank rotor housing is set in outside large piston, and sealing guide pin bushing is equipped with in front-bank rotor housing end; Front-bank rotor housing is connected by welding with intermediate plate respectively with rear-bank rotor housing, the limiting piston bar between intermediate plate and large pistons end has several throttling pore, intermediate plate has hydraulic pressure oilhole; Described cushion dashpot part also comprises a piston, and piston is positioned at the downside of intermediate plate, and piston extenal fixation is equipped with cylinder bottom.Adopt the vertical roller mill buffering device of this structure, fill, detect nitrogen conveniently, decrease workload.
Description
Technical field:
The present invention relates to vertical roll grinder field, especially a kind of vertical roller mill buffering device.
Background technique:
At present, on the large-scale roller type vertical mill equipment of cement manufacturing facility, in order to cushion the radial impact power that grinding roller produces in running, have employed the rigid buffering of spring or leather bag type hydraulic buffer.Because vertical roll grinder is in running, the percussion action of grinding roller is frequent, and impact force is very large, cause spring and leather bag often to damage, working life is low, needs frequent maintain and replace, have a strong impact on operation rate, add equipment maintenance workload and factory's operation cost.
Now retrieve the utility model patent that the patent No. is 201186230Y, it discloses a kind of large-scale vertical roll grinder buffering mechanism.This large-scale vertical roll grinder buffering mechanism comprises cushion dashpot part and guide framework part, guide framework part comprises collision guide rod, support body and ball rod, wherein collide guide rod to be flexibly connected with support body, support body is fixedly connected with connecting plate, and the lower end of collision guide rod is flexibly connected with ball rod.This damping device adopts airbag structure, and this air bag is positioned at the upper end of cushion dashpot part near guide framework part, inflated with nitrogen in air bag.The damping device of this kind of structure is unfavorable for detecting the nitrogen amount in air bag, and replacing bothers very much, needs guide framework part to dismantle successively.Due to vertical roller mill buffering device huge structure, element size and weight are very large, and therefore more the workload of ventilation bag is comparatively large, are unfavorable for changing.Meanwhile, because air bag easily damages, inconvenience is brought in actual use.
Summary of the invention:
In view of above-mentioned technical problem, the invention provides a kind of by installing one-way valve to facilitate the vertical roller mill buffering device filling nitrogen at cylinder bottom.
This invention solves the technical problem of throttling buffering when collision guide rod clashes into further; The technical problem of piston fast response time; Cylinder bottom accurate positioning technical problem easily; The technical problem that large piston guide is good; The technical problem of large piston and front-bank rotor housing, piston and rear-bank rotor housing sealing; The technical problem that limiting piston bar leads; The technical problem of protection one-way valve; Large 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 as follows: vertical roller mill buffering device, the cushion dashpot part comprising guide framework part and be fixedly connected with by adpting flange with guide framework part, described cushion dashpot part comprises squeeze head, large piston, limiting piston bar and cylinder bottom, described cushion dashpot part also comprises front-bank rotor housing, intermediate plate and rear-bank rotor housing, front-bank rotor housing is set in outside large piston, and sealing guide pin bushing is equipped with in front-bank rotor housing end; Large piston has center hole near intermediate plate one end, and limiting piston bar has central through bore, and limiting piston bar has flange near the end of large piston, in the center hole that limiting piston bar is loaded on large piston and by the set screw location on gland; The limiting piston bar the other end is through intermediate plate and by the positioning screwn location on positioning plate, front-bank rotor housing is connected by welding with intermediate plate respectively with rear-bank rotor housing, limiting piston bar between intermediate plate and large pistons end has several throttling pore, intermediate plate has hydraulic pressure oilhole; Described cushion dashpot part also comprises a piston, and piston is positioned at the downside of intermediate plate, and piston extenal fixation is equipped with cylinder bottom, described cylinder bottom is equipped with the one-way valve for inflated with nitrogen.
Preferably, described intermediate plate is along the circumferential direction evenly equipped with several reducing damping hole for throttling buffering.
Preferably, described piston is aluminium recovery.
Preferably, described cylinder bottom lower end has chamfering, rear-bank rotor housing has the reaming matched with this chamfering, passes through nut and cap location outside cylinder bottom.
Preferably, described large piston jacket has stepped guide sleeve, and stepped guide sleeve is located by the front-bank rotor housing step near guide framework part.
Preferably, described guide sleeve is Cu-base composites.
Preferably, between described large piston and front-bank rotor housing, all seal ring is housed between piston and rear-bank rotor housing.
Preferably, the gland on limiting piston bar and between large piston, guide plate is housed.
Preferably, outside described one-way valve, valve protection lid is housed.
Preferably, described large piston is fixedly connected with by high-strength bolt with between 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, can facilitate filling of nitrogen by one-way valve.Reducing damping hole on intermediate plate can play the effect of throttling buffering when grinding roller impacts; Aluminium piston structure is light, it is little to rub, quick action; Cylinder bottom is installed simple, accurate positioning; Guide sleeve can play good leading role to the motion of large piston, and the Cu-base composites guidance quality of employing is good, long service life; Seal ring then can seal cushion dashpot part, prevents hydraulic oil and smooth base; Guide plate can play good leading role to limiting piston bar; Valve protection lid can protect one-way valve; Large piston then improves with the high-strength bolt between squeeze head and is connected tightness.
Accompanying drawing illustrates:
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is sectional drawing of the present invention.
Fig. 2 is the partial enlarged drawing of part A in Fig. 1.
Fig. 3 is M-M direction view in Fig. 1.
Embodiment:
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
As shown in Figure 1 to Figure 3, the vertical roller mill buffering device of this invention comprises cushion dashpot part 16 and guide framework part 17, and cushion dashpot part 16 is fixedly connected with by adpting flange 7 with guide framework part 17.
Guide framework part 17 comprises collision guide rod 1, support body 2 and ball rod 3, collision guide rod 1 and support body 2 is can being flexibly connected of longitudinally relative movement, support body 2 and adpting flange 7 are bolted to connection, the lower end of collision guide rod 1 (for sake of convenience, to collide guide rod 1 crash direction for lower end, Hereinafter the same) have hole 40, be flexibly connected with ball rod 3.When collision guide rod 1 is subject to clashing into, ball rod 3 contacts with the squeeze head 4 of piston 5 upper end large in cushion dashpot part 16.
Cushion dashpot part 16 comprises squeeze head 4, large piston 5, front-bank rotor housing 8, be positioned at front-bank rotor housing 8 is set in guide sleeve 6, limiting piston bar 9, intermediate plate 10, rear-bank rotor housing 11, piston 12 and cylinder bottom 13 outside large piston 5, by front-bank rotor housing 8 step location.Squeeze head 4 is connected by high-strength bolt 35 with large piston 5, sealing guide pin bushing is equipped with in one end that front-bank rotor housing 8 is connected with guide framework part 17, sealing guide pin bushing comprises the first seal ring 31 near guide sleeve 6, this special envelope 32 of axle is housed outside the first seal ring 31, axle is equipped with dust ring 34 with being equipped with outside this special envelope 32 outside axle U circle 33, axle U circle 33.Large piston 5 has center hole near intermediate plate 10 one end, and large piston 5 radial direction has oil circuit hole 30.Limiting piston bar 9 has central through bore, and limiting piston bar 9 has flange near the end of large piston 5, in the center hole that limiting piston bar 9 is loaded on large piston 5 and by the set screw location on gland 28.Limiting piston bar 9 the other end is through intermediate plate 10 and by the positioning screwn location on positioning plate 26, as can be seen from Figure 2, positioning plate is fixed with pad 27 by screw, and pad 27 is 0.2mm with the spacing L of reducing damping hole 25 end, so that oil circuit circulation.After limiting piston bar 9 installs, front-bank rotor housing 8 is connected by welding with intermediate plate 10 respectively with rear-bank rotor housing 11, and the limiting piston bar 9 between intermediate plate 10 and large piston 5 end has several throttling pore 24.Front-bank rotor housing 8 and large piston 5 and intermediate plate 10, rear-bank rotor housing 11, piston 12 and intermediate plate 10 form hydraulic fluid chamber 15 respectively, intermediate plate 10 have the hydraulic pressure oilhole 18 leading to front-bank rotor housing 8 hydraulic fluid chamber 15, to fill hydraulic oil.As can be seen from Figure 3, intermediate plate 10 along the circumferential direction has 6 reducing damping holes 25, certainly the quantity of this reducing damping hole 25 can need according to structure and arrange, reducing damping hole 25 is greater than the aperture near rear-bank rotor housing 11 hydraulic fluid chamber 15 near the aperture of front-bank rotor housing 8 hydraulic fluid chamber 15, can play the effect of throttling buffering when colliding guide rod 1 and impacting.Piston 12 is positioned at the downside of intermediate plate 10, in the middle of piston 12, interior hexagonal screw plug 23 of draining the oil is housed, and can be used for releasing the hydraulic oil in hydraulic fluid chamber 15, to change hydraulic oil.Cylinder bottom 13 is equipped with in piston 12 lower end, cylinder bottom 13 lower end has chamfering 22, rear-bank rotor housing 11 end there is the reaming 36 matched with this chamfering 22, can prevent cylinder bottom 13 from moving toward piston 12 direction like this, be screwed with nut outside cylinder bottom 13 and cap 19, this nut also cap 19 has outside thread, and rear-bank rotor housing 11 end reaming 36 has internal thread, screwed up by inside and outside two screw threads and can fix cylinder bottom 13, prevent it from moving toward another direction.Cylinder bottom 13, piston 12 and rear-bank rotor housing 11 form nitrogen chamber 14, described cylinder bottom 13 are equipped with the one-way valve 20 for inflated with nitrogen, are provided with valve protection lid 21 outside one-way valve 20 by screw thread.
Because the to-and-fro motion of large piston 5 is frequent, therefore guide sleeve 6 adopts Cu-base composites, and guidance quality is good, long service life.Second seal ring 37 is housed between large piston 5 and front-bank rotor housing 8,3rd seal ring 38 is housed between piston 12 and rear-bank rotor housing 11, the 4th seal ring 39 is housed between cylinder bottom 13 and rear-bank rotor housing 11, to keep the good sealing of this device, prevent nitrogen or hydraulic oil from revealing.
Gland 28 on limiting piston bar 9 and between large piston 5, guide plate 29 is housed, this guide plate 29 can play better leading role to the motion of limiting piston bar 9.
When vertical roll grinder runs, the radial impact power that grinding roller (not shown) produces is loaded on the collision guide rod 1 of guide framework part 17, promote collision guide rod 1 to move down, by ball rod 3 and squeeze head 4, impact force is loaded on the large piston 5 of cushion dashpot part 16, promote large piston 5 to move down, by the hydraulic oil in cushion dashpot part 16 front-bank rotor housing 8 hydraulic fluid chamber 15 by the throttling pore 24 on limiting piston bar 9, reducing damping hole 25 is compressed in rear-bank rotor housing 11 hydraulic fluid chamber 15, because cushion dashpot part 16 internal capacity reduces, the oil pressure of rear-bank rotor housing 11 hydraulic fluid chamber 15 raises, and then promotion piston 12 moves downward.This piston 12 adopts high strength aluminium recovery, lightweight, rub little, fast response time.The nitrogen chamber 14 being filled with certain pressure nitrogen is compressed rear pressure and is raised, thus produce a reverse thrust and offset the radial impact power that when vertical roll grinder runs, grinding roller produces, when vertical grinding roller machine can be run, the radial impact power of grinding roller generation is reduced to zero.When the radial impact power that grinding roller produces disappears, promote the load disappearance that large piston 5 moves down, hydraulic oil pressure in hydraulic fluid chamber 15 is reduced instantaneously, the high pressure oil of rear-bank rotor housing 11 inner chamber is back in front-bank rotor housing 8 chamber by the reducing damping hole 25 on the intermediate throughholes of limiting piston bar 9, throttling pore 24 and intermediate plate 10 instantaneously, promote large piston 5 to move up, and then promote grinding roller reset.
Whole damping device is arranged on outside Vertical Mill equipment, and because this buffer unit structure changes rear end inflated with nitrogen into, user can detect preliminary filling nitrogen pressure as required at any time or add inflated with nitrogen to nitrogen end.This damping device is in structural design, and there is larger advantage operational safety and Maintenance and Repair aspect, safeguards replacing workload, saved maintenance fund, improve Business Economic Benefit for user decreases.
More than show and describe 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; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (6)
1. vertical roller mill buffering device, the cushion dashpot part comprising guide framework part and be fixedly connected with by adpting flange with guide framework part, described cushion dashpot part comprises squeeze head, large piston, limiting piston bar and cylinder bottom, it is characterized in that:
Described cushion dashpot part also comprises front-bank rotor housing, intermediate plate and rear-bank rotor housing, and front-bank rotor housing is set in outside large piston, and sealing guide pin bushing is equipped with in front-bank rotor housing end;
Large piston has center hole near intermediate plate one end, and limiting piston bar has central through bore, and limiting piston bar has flange near the end of large piston, in the center hole that limiting piston bar is loaded on large piston and by the set screw location on gland;
The limiting piston bar the other end is through intermediate plate and by the positioning screwn location on positioning plate, front-bank rotor housing is connected by welding with intermediate plate respectively with rear-bank rotor housing, limiting piston bar between intermediate plate and large pistons end has several throttling pore, intermediate plate has hydraulic pressure oilhole;
Described cushion dashpot part also comprises a piston, and piston is positioned at the downside of intermediate plate, and piston extenal fixation is equipped with cylinder bottom, described cylinder bottom is equipped with the one-way valve for inflated with nitrogen;
Described intermediate plate is along the circumferential direction evenly equipped with several reducing damping hole for throttling buffering;
Described piston is aluminium recovery;
Described cylinder bottom lower end has chamfering, rear-bank rotor housing has the reaming matched with this chamfering, passes through nut and cap location outside cylinder bottom; Between described large piston and front-bank rotor housing, between piston and rear-bank rotor housing, all seal ring is housed.
2. according to vertical roller mill buffering device described in claim 1, it is characterized in that: described large piston jacket has stepped guide sleeve, stepped guide sleeve is located by the front-bank rotor housing step near guide framework part.
3. according to vertical roller mill buffering device described in claim 2, it is characterized in that: described guide sleeve is Cu-base composites.
4. according to vertical roller mill buffering device described in claim 1, it is characterized in that: the gland on described limiting piston bar and between large piston, guide plate is housed.
5. according to vertical roller mill buffering device described in claim 1, it is characterized in that: valve protection lid is housed outside described one-way valve.
6. according to vertical roller mill buffering device described in claim 1, it is characterized in that: described large piston is fixedly connected with by high-strength bolt with between 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 CN102536958A (en) | 2012-07-04 |
| CN102536958B true CN102536958B (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210044105.8A Active CN102536958B (en) | 2012-02-24 | 2012-02-24 | Vertical roller mill buffering device |
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| CN (1) | CN102536958B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112780633B (en) * | 2021-01-06 | 2023-05-05 | 安徽鼎图液压设备有限公司 | Double-cylinder hydraulic cylinder |
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|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| 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 |
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2012
- 2012-02-24 CN CN201210044105.8A patent/CN102536958B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN102536958A (en) | 2012-07-04 |
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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. |