CN103775497A - Design method for rocker type static-dynamic pressure mill main bearing - Google Patents
Design method for rocker type static-dynamic pressure mill main bearing Download PDFInfo
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- CN103775497A CN103775497A CN201210406607.0A CN201210406607A CN103775497A CN 103775497 A CN103775497 A CN 103775497A CN 201210406607 A CN201210406607 A CN 201210406607A CN 103775497 A CN103775497 A CN 103775497A
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Abstract
The invention relates to a design method for a rocker type static-dynamic pressure mill main bearing. The method is used for designing a new type mill main bearing. The design consists of the following seven design parts: static-dynamic pressure bearing design, self-aligning part design, bearing bush cooling design, bearing lubrication system design, low pressure oil feeding device design, annular sealing structure design and temperature measuring device design. The rocker type main bearing designed by the method has the advantages of more flexible aligning, more effective bearing bush cooling, more reasonable sealing, and quicker temperature control. With the invention, the bearing's static resisting moment and bushing surface wear are reduced, the frequent bearing bush burning phenomenon during old large mill start-stop can be eliminated, and 5%-10% of energy is saved.
Description
Technical field
The present invention relates to the design field of bearing, the design method of the quiet dynamic pressure grinder main bearing of especially a kind of rocker type.
Background technique
Kibbling mill is one of visual plant being widely used in the industry grinding operations such as mine, metallurgy, cement, chemical industry, electric power, kibbling mill weight is large, and cost is high, and power consumption is many, operating cost costliness, has a significant impact for enterprise investment and operation running economic feasibility.
The power consumption of grinding operation is very large.In ore dressing plant, power consumption is generally 6 ~ 30kWh/ t, accounts for 30% ~ 75% of whole ore dressing plant power consumption, sometimes up to 85%; In cement plant, power consumption can reach 50 ~ 60kWh/ t, accounts for the more than 50% of cement plant electric energy energy consumption.Grinding operation running expense accounts for 40% ~ 60% of whole ore dressing plant operating cost, and grinding attachment investment cost accounts for overall cost 60% left and right.
Grinding machine belongs to continuous operation implement, once break down, by the normal operation of the whole process system of impact, especially directly blows powder system and selects factory's grinding operation for power plant, and the underproduction causing loss will be huge.
Therefore,, with regard to the significance and economic benefit of producing, steady running and the reduction useless power consumption of research grinding machine equipment are necessary.
Grinder main bearing plays the effect of supporting grinding mill barrel revolution, is one of vitals of kibbling mill, and the frictional loss of old-fashioned grinder main bearing accounts for 10% ~ 15% of grinding machine total energy consumption, is that idle energy consumption maximum in grinding machine equipment operation process consumes source.
Summary of the invention
In order to overcome the design deficiency of the old-fashioned main bearing structure of grinding machine of spherical bush, the invention provides the quiet dynamic pressure grinder main bearing of a kind of rocker type design method.
The technical solution adopted for the present invention to solve the technical problems is: the quiet dynamic pressure grinder main bearing of this rocker type design method comprises the design of following part.
1, hydrostatic and hydrodynamic bearing design: bearing bush tiling is offered pitot aperture, opens high pressure pumping plant before grinding machine starting and parking, and cylindrical shell is buoyance lift under hydrostatic pressure, has reduced bearing friction torque and tiling wearing and tearing; After grinding machine runs well, stop high pressure pumping plant, grinding machine moves under hydrodynamic lubrication state, can realize hydrodynamic lubrication, can guarantee that grinding machine working under full oil film state.
2, self-aligning position design: self-aligning position adopts swing type to regulate, saddle is cylinder, and bearing liner backing is cydariform face, saddle contains bearing bush, both geometrical shapies of contact are short arc line, and owing to there being stress deformation, reality is narrow cambered surface, bearing bush can be made pure rolling vertically in saddle surface, more flexible compared with sphere-contact.
3, bearing shell Cooling Design: this design adopts the associating type of cooling, when oil lubrication is cooling, bearing metal lining adopts coiler water flowing cooling, offers trapezoidal groove in bearing bush body, when cast alloy, imbeds water-cooling tube, directly cooling bearing alloy.
4, the design of bearing lubrication system: for making bearing realize active and static pressure function and guarantee grinding machine safe handling, this design bearing has 3 cover lubrication systems, static pressure starts and parking lubrication system, normal working lubrication system and the standby system of repairing.
(1) static pressure starts and parking lubrication system: static pressure starts 15min, after grinding mill barrel floats normal rotation, starts grinding machine; After grinding machine runs well, close down high-pressure system; System acting adopts PLC Programmable Controller automatically to control.
(2) normal working lubrication system: when grinding machine runs well, adopt the oil lubrication of low pressure automatic cycle; This system and high-pressure service pump start simultaneously, and work with grinding machine simultaneously, the main bearing lubrication when guaranteeing that grinding machine is normally worked.
(3) for repairing system: corresponding to each main bearing, all install a hand driven high pressure pump on high low pressure pumping plant, use for repair apparatus or under abnormal conditions.
5, low pressure oil feed device design: low pressure oil feed device is connected with drenching oil pipe by union, then joins with the inside tapered thread joint of bearing cap, has facilitated the position adjustment of pouring oil pipe; Drench hydraulic fluid port and made into be interrupted fluting by old-fashioned bearing boring pattern, make the oil under drenching form waterfall, make oil supply more even.
6, ring packing structural design: this design adopts piston ring type or rubber annular groove dry oil sealing structure, leaves gap between piston ring type or rubber ring and axle journal, with dry oil-filled lubricating grease, realizes sealing.
7, temperature measuring equipment design: this measuring temperature of bearing adopts end face platinum thermoresistance, WZP2M-301 pattern, time constant is 15s, its contact contacts with axle journal.
The invention has the beneficial effects as follows: with the rocker type main bearing of the method design have more flexible, the cooling bearing shell of aligning more effectively, sealing more rationally, temperature control advantage more rapidly; Reduce the wearing and tearing of bearing static resistance square and tiling, eliminated old-fashioned large-sized grinder and start the phenomenon of frequent tile kilning while parking, on year-on-year basis energy-conservation 5% ~ 10%.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is main bearing structure of grinding machine figure.
Fig. 2 is high-voltage oil cavity structural drawing.
Fig. 3 is low pressure oil feed device figure.
Fig. 4 is piston ring type dry oil sealing structure figure.
In figure, 1, bearing base, 2, saddle, 3, bearing shell, 4, pressing plate, 5, bearing cap, 6, ring packing, 7, drench oil pipe, 8, end face temperature detecting resistance, 9, pitot aperture, 10, union.
Embodiment
The quiet dynamic pressure grinder main bearing of this rocker type design method comprises the design of following part.
1, hydrostatic and hydrodynamic bearing design: as shown in Fig. 1 left view, saddle (2) is connected on bearing base (1), bearing bush tiling (3) is offered pitot aperture (9), before grinding machine starting and parking, open high pressure pumping plant, cylindrical shell is buoyance lift under hydrostatic pressure, has reduced bearing friction torque and tiling (3) wearing and tearing; After grinding machine runs well, stop high pressure pumping plant, grinding machine moves under hydrodynamic lubrication state, can realize hydrodynamic lubrication, can guarantee that grinding machine working under full oil film state.
2, self-aligning position design: self-aligning position adopts swing type to regulate, saddle (2) is cylinder, and bearing liner backing is cydariform face, saddle (2) contains bearing bush, both geometrical shapies of contact are short arc line, and owing to there being stress deformation, reality is narrow cambered surface, bearing bush can be made pure rolling vertically on saddle (2) surface, more flexible compared with sphere-contact.
3, bearing shell (3) Cooling Design: this design adopts the associating type of cooling, when oil lubrication is cooling, bearing metal lining adopts coiler water flowing cooling, in bearing bush body, offer trapezoidal groove, when cast alloy, imbed water-cooling tube, water-cooling tube leads to the inner directly cooling bearing alloy of bearing shell by the pressing plate (4) of bearing shell end.
4, the design of bearing lubrication system: for making bearing realize active and static pressure function and guarantee grinding machine safe handling, this design bearing has 3 cover lubrication systems, static pressure starts and parking lubrication system, normal working lubrication system and the standby system of repairing.
(1) static pressure starts and parking lubrication system: static pressure starts 15min, after grinding mill barrel floats normal rotation, starts grinding machine; After grinding machine runs well, close down high-pressure system; System acting adopts PLC Programmable Controller automatically to control.
(2) normal working lubrication system: when grinding machine runs well, adopt the oil lubrication of low pressure automatic cycle; This system and high-pressure service pump start simultaneously, and work with grinding machine simultaneously, the main bearing lubrication when guaranteeing that grinding machine is normally worked.
(3) for repairing system: corresponding to each main bearing, all install a hand driven high pressure pump on high low pressure pumping plant, use for repair apparatus or under abnormal conditions.
5, low pressure oil feed device design: as shown in Figure 3, low pressure oil feed device is connected with drenching oil pipe (7) by union (10), then joins with the inside tapered thread joint of bearing cap (5), has facilitated the adjustment of pouring oil pipe (7) position; Drench hydraulic fluid port and made into be interrupted fluting by old-fashioned bearing boring pattern, make the oil under drenching form waterfall, make oil supply more even.
6, ring packing (6) structural design: this design adopts piston ring type or rubber annular groove dry oil sealing structure, and sealing configuration as shown in Figure 4, leaves gap between piston ring type or rubber ring and axle journal, with dry oil-filled lubricating grease, realizes sealing.
7, temperature measuring equipment design: the end face temperature detecting resistance (8) when this measuring temperature of bearing adopts end face platinum thermoresistance, WZP2M-301 pattern, time constant is 15s, its contact contacts with axle journal.
The invention has the beneficial effects as follows: with the rocker type main bearing of the method design have more flexible, the cooling bearing shell of aligning more effectively, sealing more rationally, temperature control advantage more rapidly; Reduce the wearing and tearing of bearing static resistance square and tiling, eliminated old-fashioned large-sized grinder and start the phenomenon of frequent tile kilning while parking, on year-on-year basis energy-conservation 5% ~ 10%.
Such scheme industry technician can realize by industry technology means.
Claims (8)
1. the quiet dynamic pressure grinder main bearing of a rocker type design method, be used for designing a kind of new-type grinder main bearing, it is characterized in that: in its design, comprise hydrostatic and hydrodynamic bearing design, the design of self-aligning position, bearing shell Cooling Design, bearing lubrication system design, the design of low pressure oil feed device, ring packing structural design and seven design parts of temperature measuring equipment design.
2. the quiet dynamic pressure grinder main bearing of rocker type according to claim 1 design method, it is characterized in that: its hydrostatic and hydrodynamic bearing design method is that saddle (2) is connected on bearing base (1), bearing bush tiling (3) is offered pitot aperture (9), before grinding machine starting and parking, open high pressure pumping plant, cylindrical shell is buoyance lift under hydrostatic pressure, has reduced bearing friction torque and tiling (3) wearing and tearing; After grinding machine runs well, stop high pressure pumping plant, grinding machine moves under hydrodynamic lubrication state, realizes hydrodynamic lubrication.
3. the quiet dynamic pressure grinder main bearing of rocker type according to claim 1 design method, it is characterized in that: its self-aligning position design method is that its self-aligning position adopts swing type to regulate, saddle (2) is cylinder, and bearing liner backing is cydariform face, saddle (2) contains bearing bush, and both geometrical shapies of contact are short arc line, owing to there being stress deformation, reality is narrow cambered surface, and bearing bush can be made pure rolling vertically on saddle (2) surface.
4. the quiet dynamic pressure grinder main bearing of rocker type according to claim 1 design method, it is characterized in that: its bearing shell Cooling Design method is to adopt the associating type of cooling, when oil lubrication is cooling, bearing metal lining adopts coiler water flowing cooling, in bearing bush body, offer trapezoidal groove, when cast alloy, imbed water-cooling tube, water-cooling tube leads to the inner directly cooling bearing alloy of bearing shell by the pressing plate (4) of bearing shell end.
5. the quiet dynamic pressure grinder main bearing of rocker type according to claim 1 design method, it is characterized in that: the design method of its bearing lubrication system is that this design bearing has 3 cover lubrication systems, static pressure starts and parking lubrication system, normal working lubrication system and the standby system of repairing; The design method of each cover system is as follows:
(1) static pressure starts and parking lubrication system: static pressure starts 15min, after grinding mill barrel floats normal rotation, starts grinding machine; After grinding machine runs well, close down high-pressure system; System acting adopts PLC Programmable Controller automatically to control;
(2) normal working lubrication system: when grinding machine runs well, adopt the oil lubrication of low pressure automatic cycle; This system and high-pressure service pump start simultaneously, and work with grinding machine simultaneously, the main bearing lubrication when guaranteeing that grinding machine is normally worked;
(3) for repairing system: corresponding to each main bearing, all install a hand driven high pressure pump on high low pressure pumping plant, use for repair apparatus or under abnormal conditions.
6. the quiet dynamic pressure grinder main bearing of rocker type according to claim 1 design method, it is characterized in that: its low pressure oil feed device design method is that low pressure oil feed device is connected by union (10) and pouring oil pipe (7), join with the inside tapered thread joint of bearing cap (5), convenient pouring oil pipe (7) position is adjusted again; Drench hydraulic fluid port and made into be interrupted fluting by old-fashioned bearing boring pattern, make the oil under drenching form waterfall, make oil supply more even.
7. the quiet dynamic pressure grinder main bearing of rocker type according to claim 1 design method, it is characterized in that: its ring packing construction design method is to adopt piston ring type or rubber annular groove dry oil sealing structure, between piston ring type or rubber ring and axle journal, leave gap, with dry oil-filled lubricating grease, realize sealing.
8. the quiet dynamic pressure grinder main bearing of rocker type according to claim 1 design method, is characterized in that: its temperature measuring equipment design method is that its end face temperature detecting resistance (8) adopts end face platinum thermoresistance, and its contact contacts with axle journal.
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| CN201210406607.0A CN103775497A (en) | 2012-10-23 | 2012-10-23 | Design method for rocker type static-dynamic pressure mill main bearing |
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| CN201210406607.0A CN103775497A (en) | 2012-10-23 | 2012-10-23 | Design method for rocker type static-dynamic pressure mill main bearing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613094A (en) * | 2015-01-30 | 2015-05-13 | 江苏科技大学 | Multi-layer composite bearing bush sliding bearing with oil filling chamber |
| CN105179481A (en) * | 2015-09-18 | 2015-12-23 | 哈尔滨理工大学 | Dynamic-static matching method for tilting-type oil pad of round cavity static bearing |
| CN110094424A (en) * | 2019-05-07 | 2019-08-06 | 哈尔滨工业大学 | The hydrostatic gas-lubricated bearing device of the adjustable pivot angle of dissection type for rotor static balancing |
-
2012
- 2012-10-23 CN CN201210406607.0A patent/CN103775497A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613094A (en) * | 2015-01-30 | 2015-05-13 | 江苏科技大学 | Multi-layer composite bearing bush sliding bearing with oil filling chamber |
| CN105179481A (en) * | 2015-09-18 | 2015-12-23 | 哈尔滨理工大学 | Dynamic-static matching method for tilting-type oil pad of round cavity static bearing |
| CN110094424A (en) * | 2019-05-07 | 2019-08-06 | 哈尔滨工业大学 | The hydrostatic gas-lubricated bearing device of the adjustable pivot angle of dissection type for rotor static balancing |
| WO2020224614A1 (en) * | 2019-05-07 | 2020-11-12 | 哈尔滨工业大学 | Split-type adjustable-swing-angle aerostatic bearing device for static balancing of rotor, and gas-flotation support device for static balancing of rotating ring-shaped part |
| US11988252B2 (en) | 2019-05-07 | 2024-05-21 | Harbin Institute Of Technology | Split-type swing angle adjustable aerostatic bearing device for rotor static balance, and air flotation support device for static balance of rotating ring-shaped parts |
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Application publication date: 20140507 |