CN103016933A - Dual-mode automatic bearing lubricating device based on piezoelectric pump - Google Patents
Dual-mode automatic bearing lubricating device based on piezoelectric pump Download PDFInfo
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- CN103016933A CN103016933A CN2012105096336A CN201210509633A CN103016933A CN 103016933 A CN103016933 A CN 103016933A CN 2012105096336 A CN2012105096336 A CN 2012105096336A CN 201210509633 A CN201210509633 A CN 201210509633A CN 103016933 A CN103016933 A CN 103016933A
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Abstract
The invention belongs to the field of bearing lubricating and relates to a dual-mode automatic bearing lubricating device based on a piezoelectric pump. The dual-mode automatic bearing lubricating device based on the piezoelectric pump is characterized in that lubricating liquid is conveyed by the piezoelectric pump; two working modes, including self-setting lubrication through a human-machine interface and fault-monitoring lubrication by a sensor data fusion method, are provided; the whole dual-mode automatic bearing lubricating device is combined by the piezoelectric pump, an oil storage tank, a sensor set, a piezoelectric driving circuit, a microprocessor, a display, buttons, a battery and the like; through the human-machine interface, the injecting time, the injecting frequency and the injecting amount of the lubricating liquid and the like can be set by a user; and by monitoring three sensor signals, a bearing lubricating fault state is judged by the data fusion method so as to automatically supplement the lubricating liquid. The dual-mode automatic bearing lubricating device has the advantages of low energy consumption, power supply by the battery, small size, convenience in movement, capabilities of automatically injecting the lubricating liquid quantitatively at regular time and monitoring the bearing lubricating fault state to automatically supplement the lubricating liquid, wide applicability to rolling bearings and sliding bearings, and improvement on the bearing lubricating reliability and convenience.
Description
Technical field
The invention belongs to the bearing lubrication field, particularly relate to and a kind ofly drive and have man-machine interface from setting bearing automatic lubricators lubricated and the lubricated two kinds of mode of operations of Data Fusion of Sensor monitoring fault by piezoelectric pump.
Background technique
Along with the development of dynamic power machine to speed up and maximization, to all having higher requirement in the bearing capacity of bearing, service condition, transmission efficiency, reliability, working life etc., reasonable lubrication is one of key measure.At present, be used for the self-lubricated device of bearing, adopt the mode of motor acceleration and deceleration device to be lubricated absorption and the discharge of liquid more.(CN200810032527.7) utilize PLC to control a plurality of on-the-spot oil supply machines such as patent " a kind of bearing automatic lubricating system and method ", realized the self oiling of bearing, the oil pump that the oil supply machine that this covering device comprises is made of motor and retarder just consists of, this device volume is large, can't satisfy apparatus miniaturization, high reliability, high-precision demand for development.
Piezoelectric pump is a kind of microminiature fluid delivery system that utilizes the inverse piezoelectric effect principle to make, show when the piezoelectric vibrator in the piezoelectric pump applied the alternation energizing voltage, because thereby elongation or contraction that oscillator can occur radially produce double vibrations, the pressure difference of formation advances liquid to flow forward.This kind pump volume is little, energy consumption is low, easy to carry.
Summary of the invention
The object of the present invention is to provide a kind of novel bearing automatic lubricator, the problem such as solved the lubricated precision that present existing bearing automatic lubricator exists and resolution is low, oiling is made a strategic decision single unreliable, complex structure, volume be large.The present invention is realized by following technological scheme: the extraction of Lubricants is also finished by piezoelectric pump to the course of conveying of bearing, the automatic lubricator of supporting formation comprises with it: Piezoelectric pump driving circuit, control unit, display unit, button, battery etc., and they can be integrated in the automatic lubricator.In addition, outside at device, be provided with sensor unit, Lubricants input and send connecting tube etc.Further, described piezoelectric pump is made of thin sheet type piezoelectric vibrator and two one-way valves, utilizes the flexure vibrations of piezoelectric vibrator to form volume-variation formation Lubricants one-way flow.Because piezoelectric vibrator is thinner and the Curved variable is little, so the piezoelectric pump volume is little, energy consumption is low, is suitable for micrometeor and drives occasion.
Further, described control unit adopts the STM32F103RBT6 that carries AD sampling and real-time clock, can send work order to piezoelectric driving circuit according to program, controls the time that its work begins and stops.
Further, described Piezoelectric pump driving circuit adopts based on the boost booster circuit of inductance and H bridge circuit and forms high-voltage alternating driving power (as shown in Figure 5), and have interface to link to each other with control unit, realize switch control, drive peak-to-peak value voltage adjustment control and driving power frequency adjustment control.
Further, described display unit adopts the OLED display device, with further reduction Overall Power Consumption.
Further, described sensor unit is made of two temperature transducers and an acceleration transducer, and wherein temperature transducer 1 adopts filling type thermal resistor Cu50, is stretched into and is fixedly mounted with bearing support by pouring orifice; Temperature transducer 2 adopts digital temperature sensor DS18B20, is installed on the surface-mounted integrated circuit, is used for measures ambient temperature; Acceleration transducer adopts MMA7660, is fixedly installed in bearing surface.
Further, above-mentioned Cu50 adopts the three-wire system access, is furnished with the positive feedback corrector.
This device has two kinds of mode of operations, be that man-machine interface is from setting lubricating system and Data Fusion of Sensor method monitoring fault lubricating system, both can be by button and the common man machine operation interface that consists of of OLED display device, setting and modifying lubricates the data informations such as operating time, injection amount, and according to new settings information, piezoelectric driving circuit is implemented control; Also can be automatically according to data fusion method, reach thresholding and the weights of in microprocessor program, setting based on three sensor measurement data, the lubrication trouble information of decision-making and judgement bearing is sent the supplemental lubrication order automatically, prevents that the erroneous judgement of single-sensor information from causing the bearing immersion oil too much.
Parameter in above-mentioned two kinds of working methods can also link to each other with PC by USB interface such as information such as lubricated operating time, injection amount, sensing data thresholding and weights, carries out in advance corresponding setting parameter for dissimilar bearings.
Bearing automatic lubricator of the present invention has not only overcome the shortcoming that prior art exists, and has had the following advantages owing to adopt technique scheme:
1, bearing automatic lubricator of the present invention adopts piezoelectric pump as the precision fluid delivery element of Lubricants, replaces motor and retarder to form Lubricants fluid delivery element, and the pumping installations structure of whole device is greatly simplified, and volume reduces, and energy consumption is lower;
2, bearing automatic lubricator of the present invention has two kinds of mode of operations, and automatically carries out the conversion between pattern, can guarantee that time-based maintenance is lubricated, again timely fault supplemental lubrication;
3, the main control chip of bearing automatic lubricator control unit employing of the present invention is arm processor, carry AD sampling, real-time clock, USB interface and other abundant I/O interfaces, and having sleep reaches from arousal function, can guarantee lower energy consumption control, make simultaneously circuit structure simple, circuit board takes up space little;
4, the piezoelectric driving circuit of bearing automatic lubricator of the present invention is made of boost booster circuit and H bridge circuit two-part based on inductance, and they are integrated in the Surface Mount encapsulation, and volume is little, and energy consumption is low;
5, sensor group data fusion mode has been adopted in the fault decision-making of bearing automatic lubricator of the present invention, can prevent effectively that the erroneous judgement of single-sensor information from causing the too much problem of bearing immersion oil.
Description of drawings
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is overall structure figure of the present invention;
Fig. 3 is top plan view of the present invention;
Fig. 4 is the working principle schematic representation of piezoelectric pump of the present invention;
Fig. 5 is the fundamental diagram of piezoelectric pump driving power of the present invention;
Fig. 6 is main control unit circuit of the present invention;
Fig. 7 is power supply circuit of the present invention;
Fig. 8 is button of the present invention, demonstration, tutorial light, USB wired circuit;
Fig. 9 is OLED screen drive circuit of the present invention;
Figure 10 is temperature transducer 1 signal conditioning circuit of the present invention;
Figure 11 is the connecting circuit of temperature transducer 2 of the present invention and MCU;
Figure 12 is the connecting circuit of acceleration transducer of the present invention and MCU;
The 1-bearing support, 2-temperature transducer 1,3-acceleration transducer, the 4-automatic lubricator, 5-OLED display device, 6-button, the 7-pouring orifice, 8-oil pipe, 9-scale form, the 10-oil storage tank, 11-filter screen, 12-control circuit board, the 13-piezoelectric pump, 14-oil outlet tube, 15-oil inlet pipe, 16-pump chamber 1,17-connection chamber, 18-pump chamber 2
Embodiment
Below in conjunction with accompanying drawing, technological scheme of the present invention is specified.
With reference to Fig. 2, automatic lubricator 4 has man-machine interface from setting greaser's operation mode: (1). manually set the information such as lubricated operating time, injection amount by button 6, and on OLED display device 5 the display operation process; (2). when sensor 2,3 and control circuit board 12 on another temperature transducer detect information and assessment and not having when transfiniting prompting, a whole set of lubricating fitting 4 press set information, piezoelectric pump 13 is implemented to drive control oil injecting lubricating; (3). when not carrying out manual setting operation, lubricating fitting 4 is pressed system default information oil injecting lubricating.
A kind of greaser's operation mode of processing according to Data Fusion of Sensor: (1). every 100ms gathers data t1, t2, ax, ay, the az of two temperature transducers and an acceleration transducer; (2). the data fusion formula is as follows
Wherein, T
1The peak of temperature requirement when moving for bearing, T
2Be 25 °, k
1, k
2, k
3Be respectively the weighted factor of three coordinate axes acceleration informations.(3). when fuse information n 〉=TH, lubricating fitting is enabled the fault lubrication mode, and wherein TH is the set threshold value of this kind bearing.
Described Lubricants driver element is piezoelectric pump 13.
Described control unit 12 adopts the STM32F103RBT6 that carries AD sampling and real-time clock.
Described Piezoelectric pump driving circuit adopts based on the boost booster circuit of inductance and H bridge circuit and forms the high-voltage alternating driving power.
Described data transmission circuit USB interface links to each other with PC.
Claims (7)
1. bearing automatic lubricator based on piezoelectric pump, it is characterized in that: finish the self oiling process by piezoelectric pump (13), man-machine interface is arranged from setting lubricated and the lubricated two kinds of mode of operations of Data Fusion of Sensor method monitoring fault, whole device is to be cooperated by piezoelectric pump (13), oil storage tank (10), battery, piezoelectric driving circuit and microprocessor to realize, and can be integrated into a kind of automatic lubricator; Wherein battery provides electric power for microprocessor and piezoelectric driving circuit; Piezoelectric driving circuit drives its work for piezoelectric pump provides the alternating voltage signal; Oil storage tank (10) can be airtight be used to depositing lubricant oil for the upper end, connects pipe and link to each other with piezoelectric pump input end (15).
2. piezoelectric pump according to claim 1 (10) is as the drive unit of Lubricants.Piezoelectric pump is a kind of microminiature fluid delivery system that utilizes the inverse piezoelectric effect principle to make, show when the piezoelectric vibrator in the piezoelectric pump applied the alternation energizing voltage, because thereby elongation or contraction that oscillator can occur radially produce double vibrations, the pressure difference of formation advances liquid to flow forward.
3. according to claim 1 a kind ofly have man-machine interface from setting the piezoelectric pump bearing automatic lubricator of lubricating system, it is characterized in that: button (6) consists of man machine operation interface jointly with OLED display device (5), microprocessor is according to data informations such as lubricated operating time of button (6) setting and modifying, injection amounts, and according to new settings information, piezoelectric driving circuit is implemented control.
4. a kind of piezoelectric pump bearing automatic lubricator with Data Fusion of Sensor method monitoring fault lubrication mode according to claim 1, it is characterized in that: consist of the sensor group by two temperature transducers and an acceleration transducer (3), wherein temperature transducer (2) adopts filling type thermal resistor Cu50, is stretched into and is fixedly mounted with bearing support (1) by pouring orifice (7); Another temperature transducer adopts digital temperature sensor DS18B20, is installed on the surface-mounted integrated circuit (12), is used for measures ambient temperature; Acceleration transducer (3) adopts MMA7660, is fixedly installed in bearing surface.
5. microprocessor according to claim 1 is the STM32 single-chip microcomputer that carries AD sampling and real-time clock, can send work order to piezoelectric driving circuit according to program, controls the time that its work begins and stops.
6. Cu50 according to claim 3 adopts the three-wire system access, is furnished with the positive feedback corrector.
7. data fusion method according to claim 3 is based on three sensor measurement data, in microprocessor program, set different thresholding and weights, thereby for the lubrication trouble judgement of bearing provides decision information, automatically send the supplemental lubrication order, prevent that the erroneous judgement of single-sensor information from causing the bearing immersion oil too much.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105096336A CN103016933A (en) | 2012-11-20 | 2012-11-20 | Dual-mode automatic bearing lubricating device based on piezoelectric pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105096336A CN103016933A (en) | 2012-11-20 | 2012-11-20 | Dual-mode automatic bearing lubricating device based on piezoelectric pump |
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| CN103016933A true CN103016933A (en) | 2013-04-03 |
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| CN2012105096336A Pending CN103016933A (en) | 2012-11-20 | 2012-11-20 | Dual-mode automatic bearing lubricating device based on piezoelectric pump |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950527A (en) * | 2014-05-09 | 2014-07-30 | 兰州交通大学 | Ray pectoral fin-imitated piezoelectric coupling propulsive mechanism |
| CN105156316A (en) * | 2015-09-28 | 2015-12-16 | 吉林大学 | Testing device for performance of piezoelectric pump |
| CN105465590A (en) * | 2015-12-16 | 2016-04-06 | 太原重工股份有限公司 | Lubricating system and equipment with same |
| CN110821804A (en) * | 2018-08-10 | 2020-02-21 | 研能科技股份有限公司 | Driving frequency sweep compensation method of micropump |
| CN111697874A (en) * | 2020-06-24 | 2020-09-22 | 河北工业大学 | Motor stator vibration mode observation method based on nonlinear sliding-mode observer |
| CN113202870A (en) * | 2021-05-06 | 2021-08-03 | 吉林大学 | Solid lubricating material supply device for oil shortage protection of sliding bearing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001003874A (en) * | 1999-06-21 | 2001-01-09 | Nsk Ltd | Lubricating device |
| JP2004108388A (en) * | 2002-09-13 | 2004-04-08 | Koyo Seiko Co Ltd | Rolling bearing device |
| US20070137936A1 (en) * | 2004-01-09 | 2007-06-21 | Jfe Steel Corporation | Lubricant feed state monitoring sensor and lubricant feed state monitoring device |
| CN201162655Y (en) * | 2007-12-07 | 2008-12-10 | 吉林大学 | Single-cavity double-transducer piezoelectric pump |
| CN102246685A (en) * | 2011-06-03 | 2011-11-23 | 常州志邦电子科技有限公司 | Automatic flower watering device |
-
2012
- 2012-11-20 CN CN2012105096336A patent/CN103016933A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001003874A (en) * | 1999-06-21 | 2001-01-09 | Nsk Ltd | Lubricating device |
| JP2004108388A (en) * | 2002-09-13 | 2004-04-08 | Koyo Seiko Co Ltd | Rolling bearing device |
| US20070137936A1 (en) * | 2004-01-09 | 2007-06-21 | Jfe Steel Corporation | Lubricant feed state monitoring sensor and lubricant feed state monitoring device |
| CN201162655Y (en) * | 2007-12-07 | 2008-12-10 | 吉林大学 | Single-cavity double-transducer piezoelectric pump |
| CN102246685A (en) * | 2011-06-03 | 2011-11-23 | 常州志邦电子科技有限公司 | Automatic flower watering device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950527A (en) * | 2014-05-09 | 2014-07-30 | 兰州交通大学 | Ray pectoral fin-imitated piezoelectric coupling propulsive mechanism |
| CN105156316A (en) * | 2015-09-28 | 2015-12-16 | 吉林大学 | Testing device for performance of piezoelectric pump |
| CN105156316B (en) * | 2015-09-28 | 2017-03-29 | 吉林大学 | Piezoelectric pump performance testing device |
| CN105465590A (en) * | 2015-12-16 | 2016-04-06 | 太原重工股份有限公司 | Lubricating system and equipment with same |
| CN110821804A (en) * | 2018-08-10 | 2020-02-21 | 研能科技股份有限公司 | Driving frequency sweep compensation method of micropump |
| CN110821804B (en) * | 2018-08-10 | 2021-03-23 | 研能科技股份有限公司 | Driving frequency sweep compensation method of micropump |
| CN111697874A (en) * | 2020-06-24 | 2020-09-22 | 河北工业大学 | Motor stator vibration mode observation method based on nonlinear sliding-mode observer |
| CN111697874B (en) * | 2020-06-24 | 2023-09-05 | 河北工业大学 | Motor stator vibration mode observation method based on nonlinear sliding mode observer |
| CN113202870A (en) * | 2021-05-06 | 2021-08-03 | 吉林大学 | Solid lubricating material supply device for oil shortage protection of sliding bearing |
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Application publication date: 20130403 |