CN104064097B - Hydrldynamic pressure lubrication demonstrator - Google Patents
Hydrldynamic pressure lubrication demonstrator Download PDFInfo
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- CN104064097B CN104064097B CN201410193606.1A CN201410193606A CN104064097B CN 104064097 B CN104064097 B CN 104064097B CN 201410193606 A CN201410193606 A CN 201410193606A CN 104064097 B CN104064097 B CN 104064097B
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- stationary ring
- rotating ring
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- synchronous pulley
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Abstract
The invention discloses a kind of hydrldynamic pressure lubrication demonstrator, including rotating ring, stationary ring, equipped with the fuel tank of silicone oil, motor and actuating device, described rotating ring and stationary ring are arranged in described fuel tank, and described stationary ring is arranged on the top of rotating ring, and described rotating ring and stationary ring oil seal; Described rotating ring be connected to main shaft centrally through flat key, described main shaft is connected with the electric machine shaft driving of described motor by described actuating device; During rotation, between described rotating ring and stationary ring, form oil film; The circumferentially spaced wedge-shaped projection that is equipped with on the lower surface of described stationary ring, the lower surface of described stationary ring and the upper surface of rotating ring cooperatively form the wedge gap of oil film; Being provided with through hole, described through hole connection oil pressure display tube and wedge gap on the upper surface of described stationary ring, the upper end of described oil pressure display tube communicates with external environment.
Description
Technical field
The present invention relates to a kind of hydrldynamic pressure lubrication demonstrator, belong to demonstration teaching aid.
Background technology
Engineering machinery works under severe working condition, bear big load and impact frequently, often break down, at this moment it is accomplished by us and reduces each inter-agency friction, and reduce the friction and wear most efficient method between two friction pairs, it is between friction pair, introduce lubricant form lubricating film, lubricating film bears part or all of load, make friction pair smooth running, improve device efficiency and life-span. Visible research lubrication is significant in engineering. Hydrodynamic lubrication is maximally effective in various lubrications, and its coefficient of friction and abrasion are all very little, and there are good protection, cleaning, cooling, rust inhibition in surface by oil film, and mechanically stable can be made to operate. Hydrodynamic lubrication is applied in the dynamic transfer systems such as various steam turbine, gas turbine, gear-box, play that its bearing capacity is big, power consumption is little, shock-resistant, good anti-vibration, running accuracy high, it is possible to be effectively improved mechanical movement efficiency and service life.
Therefore for learning the student of mechanical major, the operation principle of correct understanding fluid sliding bearing is extremely important. But current college course Machine Design is only merely on books some stiff abstract words for the study of fluid sliding bearing principle and chart describes, allow people's indigestion, and impression is deep, can not effectively grasp flesh and blood.
Summary of the invention
In order to overcome existing teaching aid that hydrodynamic lubrication principle learning process middle school student understand the shortcomings such as classroom efficiency difficult, directly perceived not is low, the present invention provide a kind of simple in construction, rationally distributed, stablize speed change, vivid hydrldynamic pressure lubrication demonstrator.
The technical solution used in the present invention is:
Hydrldynamic pressure lubrication demonstrator, including rotating ring, stationary ring, equipped with the fuel tank of silicone oil, motor and actuating device, described rotating ring and stationary ring are arranged in described fuel tank, and described stationary ring is arranged on the top of rotating ring, and described rotating ring and stationary ring oil seal;Described rotating ring be connected to main shaft centrally through flat key, described main shaft is connected with the electric machine shaft driving of described motor by described actuating device; Time static, described stationary ring and rotating ring touch; During rotation, between described rotating ring and stationary ring, form oil film; It is characterized in that: the circumferentially spaced wedge-shaped projection that is equipped with on the lower surface of described stationary ring, the lower surface of described stationary ring and the upper surface of rotating ring cooperatively form the wedge gap of oil film; Being provided with through hole, described through hole connection oil pressure display tube and wedge gap on the upper surface of described stationary ring, the upper end of described oil pressure display tube communicates with external environment;
It is provided with additional circuit between described rotating ring and stationary ring, described additional circuit includes power supply, wire and light bar, the negative pole of described power supply is connected with rotating ring by wire, and the positive pole of described power supply is connected with light bar, and described light bar is connected with stationary ring by wire;
The upper end of described main shaft is installed on described rotating ring, the lower end of described main shaft is arranged on a chassis, described chassis is installed on the first fixed mount, one or six prism showing stands it are arranged with outside the first described fixed mount, can relatively rotate between described six prism showing stands and the first fixed mount, six sides of six described prism showing stands are respectively arranged with Graphic Panel.
Further, the lower end of described main shaft is connected with described chassis bolt by bearing block, and described main shaft is connected with fuel tank, box body bolt respectively by clutch shaft bearing, the second bearing, and described fuel tank is installed in the upper surface of described casing.
Further, the described upper bolt in fuel tank is connected to the second fixed mount, the upper surface of described stationary ring be provided centrally with a central shaft, described central shaft is arranged in the through hole on the second described fixed mount by bearing block.
Further, described actuating device includes the first synchronous pulley, the second synchronous pulley and the belt pulley being set between the first synchronous pulley and the second synchronous pulley, the first described synchronous pulley is arranged on the motor shaft of described motor by pin key cooperation, the second described synchronous pulley is arranged on described main shaft by pin key cooperation, under the effect of motor, first synchronous pulley drives pulley movements, then driving the second synchronous pulley motion, the second synchronous pulley drives described rotating ring to rotate.
Further, the threaded upper ends of described central shaft is connected to a scale pan.
Further, being provided with heater, described heater and a temperature controller and control to connect in described fuel tank, described temperature controller is arranged on described body side, and described temperature controller is provided with temperature display and temp control switch.
Further, described motor is installed in described casing by motor fixing seat, and the motor shaft of described motor and a rotating speed change speed gear box control to connect, and described rotating speed change speed gear box is for there being level to regulate, and it is embedded in the side of described casing, described rotating speed change speed gear box is provided with speed governing knob.
Further, being provided with temperature sensor in described fuel tank, described temperature sensor controls to be connected with alarm, and described alarm is arranged on the side of described casing.
Further, outside the first described fixed mount, it is installed with the first annulus, outer nested second annulus of the first described annulus, the second described annulus is installed on six described prism showing stands, and the first described annulus and the second annulus can relatively rotate;It is provided with ball bearing between the first described annulus and the second annulus.
Fuel tank of the present invention selects hexagon acrylic board to make, its light transmission is good, pure color, attractive in appearance smooth, take into account two kinds of effects at night on daytime, long service life, do not affect the features such as use. Adopt hexagonal design also for experimental phenomena can be observed from many aspects, more directly perceived and clear.
The present invention the first synchronous pulley and the second synchronous pulley all have employed cylinder synchronous belt pulley transmission, and such system behaves smooth steady more, will not send noise sound, and make material be readily available, convenient batch production from now on.
The present invention has selected the motor of 300r/S, is reconfigured at arrangements for speed regulation, forms multistage step speed change, double; two synchronous belt pulley transmissions, makes main axis stable.
Stationary ring of the present invention adopts abs plastics, has the advantages such as impact resistance, thermostability, lower temperature resistance, chemical proofing and excellent electrical properties. Adopt plastic construction, it is also possible to alleviator weight, the convenient oil pressure produced can jack-up stationary ring, make external circuit bulb extinguish.
Rotating ring of the present invention is connected fixing by pin key with chassis, makes rotating ring more steady when rotating, will not rock.
When the present invention is static, stationary ring contacts with rotating ring surface, when rotating ring rotates, oil can be brought into wedge gap, namely produce certain dynamic pressure bearing capacity, stationary ring jack-up can be come, make upper and lower ring disengage and cause the open circuit of additional circuit to make little bulb extinguish. Described scale pan can freely add extra external applied load, if improving rotating speed, still it is observed that bulb extinguishes. Described temperature controller can arbitrarily regulate oil temperature between 0 ° to 110 °, and turning knob is to assigned temperature, and oil can be heated by heater at once, it is possible to qualitatively judges the oil temperature impact on experimental phenomena. Described rotating speed change speed gear box can have level to regulate rotating ring rotating speed, the range of accommodation of rotating speed is 0～300 rpm, synchronous pulley rotating speed also changes simultaneously, the speed of mainshaft also changes immediately, now can observe the lifting of oil pressure display liquid in pipe very intuitively, it is possible to qualitatively judge the rotating speed impact on experimental phenomena.
This device must strictly meet three essential conditions that hydrldynamic pressure lubrication is formed:
1) there is relative motion (roll or slide) between rotating ring with stationary ring two surface;
2) having wedge gap between rotating ring and stationary ring two surface, lubricating oil enters from big mouth, and osculum flows out;
3) between rotating ring and stationary ring two surface, lubricant has certain viscosity.
The formation of hydrodynamic lubrication is substantially through three processes:
(1) stationary ring contacts with rotating ring due to deadweight when static, there is wedge gap between the two;
(2) when rotating ring starts to rotate, due to the adhesive force of oily viscosity and metal surface, oil reservoir rotates together along with rotating ring. Stationary ring through wedge gap, owing to oil molecule is squeezed and itself kinetic energy, is produced pressure, is lifted up by stationary ring by oil reservoir;
(3) when rotating ring reaches certain speed, oil is sufficiently large to the pressure of stationary ring, and upper and lower two ring surfaces are separated by oil film completely, thus defining hydrldynamic pressure lubrication.
Rotating ring is rotatable, and stationary ring moves up and down only, it is impossible to rotate. When rotating ring starts to rotate, two dishes form relative motion, and wedge-shaped oil film gap is formed, and the pressure size of oil film (from big mouth to osculum) each point is reacted to the height of oil pressure display tube, connects each pipe fluid column peak and can approximately form an oil pressure curve. Respectively through controlling rotating ring rotating speed and controlling the temperature of oil, can the relation of thickness coefficient and oil pressure curve of the speed of qualitative analysis pressure current and oil.
When rotating ring is static, upper and lower two loop contacts;When rotating ring has certain speed, certain axial thrust can be produced, make stationary ring move upward, so that ring separates up and down. In that case, the displacement of stationary ring is smaller, it is difficult to directly observe whether two rings separate, the present invention adopt LED bright dark come the upper and lower ring of vivid expression deciliter.
Beneficial effects of the present invention is embodied in:
1, this demonstrator can intuitively present oil pressure curve, student oneself is allowed to probe into hydrodynamic lubrication performance and temperature, relation between rotating speed and oil film inclination angle, hands-on is pinpointed the problems, solution problem, such experimental teaching has more interest, and makes the operation principle understanding fluid sliding bearing and the engineering application of student's dramatic more, is effectively improved classroom efficiency.
2, regulating rotating ring rotating speed, the temperature of oil, qualitative analysis dynamic pressure load is relevant with which factor and simple and reasonable, rationally distributed, can stablize whole instrument, and phenomenon is obvious.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the enlarged drawing at I place in Fig. 1.
Fig. 3 is the structural representation of stationary ring.
Fig. 4 is the top view of stationary ring and oil pressure display tube.
Fig. 5 is six prism showing stand top views.
Fig. 6 is body side schematic diagram.
Detailed description of the invention
Referring to figs. 1 through Fig. 6, hydrldynamic pressure lubrication demonstrator, including rotating ring 1, stationary ring 2, equipped with the fuel tank 3 of silicone oil, motor 14 and actuating device, described rotating ring 1 is arranged in described fuel tank 3 with stationary ring 2, described stationary ring 2 is arranged on the top of rotating ring 1, and described rotating ring 1 and stationary ring 2 oil seal; Described rotating ring 1 be connected to main shaft 18 centrally through flat key 8, described main shaft 18 is connected with the electric machine shaft driving of described motor 14 by described actuating device; Time static, described stationary ring and rotating ring touch; During rotation, between described rotating ring and stationary ring, form oil film; The circumferentially spaced wedge-shaped projection 21 that is equipped with on the lower surface of described stationary ring, the lower surface of described stationary ring 2 and the upper surface of rotating ring 1 cooperatively form the wedge gap of oil film; Being provided with through hole, described through hole connection oil pressure display tube 4 and wedge gap on the upper surface of described stationary ring 2, the upper end of described oil pressure display tube 4 communicates with external environment;
It is provided with additional circuit between described rotating ring 1 and stationary ring 2, described additional circuit includes power supply, wire and light bar, the negative pole of described power supply is connected with rotating ring 1 by wire, and the positive pole of described power supply is connected with light bar, and described light bar is connected with stationary ring 2 by wire;
The upper end of described main shaft 18 is installed on described rotating ring 1, the lower end of described main shaft 18 is arranged on a chassis 19, described chassis 19 is installed on the first fixed mount, one or six prism showing stands 15 it are arranged with outside the first described fixed mount, can relatively rotate between described six prism showing stands 15 and the first fixed mount, six sides of six described prism showing stands 15 are respectively arranged with Graphic Panel.
Further, the lower end of described main shaft 18 is connected with described chassis bolt by bearing block, and described main shaft is connected with fuel tank 3, casing 20 bolt respectively by clutch shaft bearing, the second bearing 9, and described fuel tank 3 is installed in the upper surface of described casing 20.
Further, the described upper bolt in fuel tank 3 is connected to the second fixed mount 7, the upper surface of described stationary ring 2 be provided centrally with a central shaft 5, described central shaft 5 is arranged in the through hole on the second described fixed mount 7 by bearing block.
Further, described actuating device includes first synchronous pulley the 11, second synchronous pulley 13 and the belt pulley 12 being set between the first synchronous pulley 11 and the second synchronous pulley 13, the first described synchronous pulley 11 is arranged on the motor shaft of described motor 14 by pin key cooperation, the second described synchronous pulley 13 is arranged on described main shaft 18 by pin key cooperation, under the effect of motor 14, first tooth 11 is taken turns drive belt pulley 12 and is moved, then driving the second synchronous pulley 13 to move, the second synchronous pulley 13 drives described rotating ring 1 to rotate.
Further, the threaded upper ends of described central shaft 5 is connected to a scale pan 6.
Further, it is provided with heater in described fuel tank 3, described heater and a temperature controller 202 control to connect, and described temperature controller 202 is arranged on described casing 20 side, and described temperature controller 202 is provided with temperature display 203 and temp control switch.
Further, described motor 14 is installed in described casing 20 by motor fixing seat 10, the motor shaft of described motor 14 and a rotating speed change speed gear box 201 control to connect, described rotating speed change speed gear box 201 is for there being level to regulate, and it is embedded in the side of described casing 20, described rotating speed change speed gear box 201 is provided with speed governing knob.
Further, being provided with temperature sensor in described fuel tank, described temperature sensor controls to be connected with alarm 204, and described alarm 204 is arranged on the side of described casing.
Further, the first annulus 16 it is installed with outside the first described fixed mount, the first described outer nested second annulus 17 of annulus 16, the second described annulus 17 is installed on six described prism showing stands 15, and the first described annulus 16 and the second annulus 17 can relatively rotate; It is provided with ball bearing between described the first annulus 16 and the second annulus 17.
Fuel tank 3 of the present invention selects hexagon acrylic board to make, its light transmission is good, pure color, attractive in appearance smooth, take into account two kinds of effects at night on daytime, long service life, do not affect the features such as use. Adopt hexagonal design also for experimental phenomena can be observed from many aspects, more directly perceived and clear.
The present invention the first synchronous pulley 11 and the second synchronous pulley 13 all have employed cylinder synchronous belt pulley transmission, and such system behaves smooth steady more, will not send noise sound, and make material be readily available, convenient batch production from now on.
The present invention has selected the motor 14 of 300r/S, is reconfigured at arrangements for speed regulation, forms multistage step speed change, double; two synchronous belt pulley transmissions, makes main axis stable.
Stationary ring 2 of the present invention adopts abs plastics, has the advantages such as impact resistance, thermostability, lower temperature resistance, chemical proofing and excellent electrical properties. Adopt plastic construction, it is also possible to alleviator weight, the convenient oil pressure produced can jack-up stationary ring, make external circuit bulb extinguish.
Rotating ring 1 of the present invention is connected fixing by pin key with chassis 19, makes rotating ring 1 more steady when rotating, will not rock.
When the present invention is static, stationary ring 2 contacts with rotating ring 1 surface, when rotating ring rotates, oil can be brought into wedge gap, namely produce certain dynamic pressure bearing capacity, stationary ring jack-up can be come, make upper and lower ring disengage and cause the open circuit of additional circuit to make little bulb extinguish. Described scale pan can freely add extra external applied load, if improving rotating speed, still it is observed that bulb extinguishes. Described temperature controller can arbitrarily regulate oil temperature between 0 ° to 110 °, and turning knob is to assigned temperature, and oil can be heated by heater at once, it is possible to qualitatively judges the oil temperature impact on experimental phenomena.Described rotating speed change speed gear box can have level to regulate rotating ring rotating speed, the range of accommodation of rotating speed is 0～300 rpm, synchronous pulley rotating speed also changes simultaneously, the speed of mainshaft also changes immediately, now can observe the lifting of oil pressure display liquid in pipe very intuitively, it is possible to qualitatively judge the rotating speed impact on experimental phenomena.
Content described in this specification embodiment is only enumerating of the way of realization to inventive concept; protection scope of the present invention is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also and in those skilled in the art according to present inventive concept it is conceivable that equivalent technologies means.
Claims (8)
1. hydrldynamic pressure lubrication demonstrator, including rotating ring, stationary ring, equipped with the fuel tank of silicone oil, motor and actuating device, described rotating ring and stationary ring are arranged in described fuel tank, and described stationary ring is arranged on the top of rotating ring, and described rotating ring and stationary ring oil seal; Described rotating ring be connected to main shaft centrally through flat key, described main shaft is connected with the electric machine shaft driving of described motor by described actuating device; Time static, described stationary ring and rotating ring touch; During rotation, between described rotating ring and stationary ring, form oil film; It is characterized in that: the circumferentially spaced wedge-shaped projection that is equipped with on the lower surface of described stationary ring, the lower surface of described stationary ring and the upper surface of rotating ring cooperatively form the wedge gap of oil film; Being provided with through hole, described through hole connection oil pressure display tube and wedge gap on the upper surface of described stationary ring, the upper end of described oil pressure display tube communicates with external environment;
It is provided with additional circuit between described rotating ring and stationary ring, described additional circuit includes power supply, wire and light bar, the negative pole of described power supply is connected with rotating ring by wire, and the positive pole of described power supply is connected with light bar, and described light bar is connected with stationary ring by wire;
The upper end of described main shaft is installed on described rotating ring, the lower end of described main shaft is arranged on a chassis, described chassis is installed on the first fixed mount, one or six prism showing stands it are arranged with outside the first described fixed mount, can relatively rotate between described six prism showing stands and the first fixed mount, six sides of six described prism showing stands are respectively arranged with Graphic Panel;
The first annulus it is installed with outside the first described fixed mount, outer nested second annulus of the first described annulus, the second described annulus is installed on six described prism showing stands, and the first described annulus and the second annulus can relatively rotate; It is provided with ball bearing between the first described annulus and the second annulus.
2. hydrldynamic pressure lubrication demonstrator as claimed in claim 1, it is characterized in that: the lower end of described main shaft is connected with described chassis bolt by bearing block, described main shaft is connected with fuel tank, box body bolt respectively by clutch shaft bearing, the second bearing, and described fuel tank is installed in the upper surface of described casing.
3. hydrldynamic pressure lubrication demonstrator as claimed in claim 2, it is characterized in that: the described upper bolt in fuel tank is connected to the second fixed mount, the upper surface of described stationary ring be provided centrally with a central shaft, described central shaft is arranged in the through hole on the second described fixed mount by bearing block.
4. hydrldynamic pressure lubrication demonstrator as claimed in claim 3, it is characterized in that: described actuating device includes the first synchronous pulley, second synchronous pulley and the belt pulley being set between the first synchronous pulley and the second synchronous pulley, the first described synchronous pulley is arranged on the motor shaft of described motor by pin key cooperation, the second described synchronous pulley is arranged on described main shaft by pin key cooperation, under the effect of motor, first synchronous pulley drives pulley movements, then the second synchronous pulley motion is driven, second synchronous pulley drives described rotating ring to rotate.
5. hydrldynamic pressure lubrication demonstrator as claimed in claim 4, it is characterised in that: the threaded upper ends of described central shaft is connected to a scale pan.
6. hydrldynamic pressure lubrication demonstrator as claimed in claim 5, it is characterized in that: in described fuel tank, be provided with heater, described heater and a temperature controller control to connect, described temperature controller is arranged on described body side, and described temperature controller is provided with temperature display and temp control switch.
7. hydrldynamic pressure lubrication demonstrator as claimed in claim 6, it is characterized in that: described motor is installed in described casing by motor fixing seat, the motor shaft of described motor and a rotating speed change speed gear box control to connect, described rotating speed change speed gear box is for there being level to regulate, and it is embedded in the side of described casing, described rotating speed change speed gear box is provided with speed governing knob.
8. hydrldynamic pressure lubrication demonstrator as claimed in claim 7, it is characterised in that: being provided with temperature sensor in described fuel tank, described temperature sensor controls to be connected with alarm, and described alarm is arranged on the side of described casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410193606.1A CN104064097B (en) | 2014-05-08 | 2014-05-08 | Hydrldynamic pressure lubrication demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410193606.1A CN104064097B (en) | 2014-05-08 | 2014-05-08 | Hydrldynamic pressure lubrication demonstrator |
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| Publication Number | Publication Date |
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| CN104064097A CN104064097A (en) | 2014-09-24 |
| CN104064097B true CN104064097B (en) | 2016-06-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4251217A (en) * | 1979-06-25 | 1981-02-17 | Brasseux Robert W | Oil well production training device |
| CN202204476U (en) * | 2011-09-07 | 2012-04-25 | 上海大学 | Constant-inclination angle surface contact film lubrication measuring apparatus |
| CN202258045U (en) * | 2011-04-11 | 2012-05-30 | 长江大学 | L-II fluid mechanics integrated testing instrument |
| CN203502328U (en) * | 2013-09-29 | 2014-03-26 | 青岛理工大学 | Lubricating oil film bearing capacity measuring device based on optical feedback |
| CN203931322U (en) * | 2014-05-08 | 2014-11-05 | 浙江工业大学 | Hydrldynamic pressure lubrication demonstrator |
-
2014
- 2014-05-08 CN CN201410193606.1A patent/CN104064097B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4251217A (en) * | 1979-06-25 | 1981-02-17 | Brasseux Robert W | Oil well production training device |
| CN202258045U (en) * | 2011-04-11 | 2012-05-30 | 长江大学 | L-II fluid mechanics integrated testing instrument |
| CN202204476U (en) * | 2011-09-07 | 2012-04-25 | 上海大学 | Constant-inclination angle surface contact film lubrication measuring apparatus |
| CN203502328U (en) * | 2013-09-29 | 2014-03-26 | 青岛理工大学 | Lubricating oil film bearing capacity measuring device based on optical feedback |
| CN203931322U (en) * | 2014-05-08 | 2014-11-05 | 浙江工业大学 | Hydrldynamic pressure lubrication demonstrator |
Non-Patent Citations (1)
| Title |
|---|
| 《液体动压实验装置的研制》;潘国俊 等;《江苏工业学院学报》;20090331;第21卷(第1期);第76-78页 * |
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