CN101975660A - Control device for bearing ball contact fatigue testing machine and control method thereof - Google Patents
Control device for bearing ball contact fatigue testing machine and control method thereof Download PDFInfo
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Abstract
The invention relates to a control device for a bearing ball contact fatigue testing machine and a control method thereof. The control device comprises a first proximity switch, a second proximity switch, a pressure sensor, an oil pressure sensor, a vibration sensor, a temperature sensor, a vibration signal amplifier, a temperature signal amplifier, an A/D conversion module, a drive module and a frequency converter, wherein the proximity switches, the pressure sensor and the oil pressure sensor are connected with the input end of the A/D conversion module; the input ends of the vibration sensor and the temperature signal amplifier are respectively connected with the corresponding vibration sensor and the corresponding temperature sensor while the output ends are respectively connected with the corresponding input ends of a computer and the drive circuit; the output end of the drive circuit is connected with an oil pump motor, a first motor and the frequency converter in a lubricating mechanism; and the frequency converter is connected with a second motor. The control method comprises the following steps of: selecting a boot mode, setting parameters, selecting test type, giving a load, analyzing and processing an input signal and the like. The device and the method have the advantages of low labor intensity, timely fault processing, and equipment protection.
Description
Technical field
The present invention relates to the torture test in the mechanical field, relate in particular to the control device and the control method thereof of bearing ball contact fatigue test machine.
Background technology
The contact fatigue life of rolling bearing ball is under the standard condition condition, estimates one of main means of bearing material performance and processing technology quality.Rolling bearing ball contact fatigue life obtains by corresponding contact fatigue test machine.This testing machine mainly accompanies examination roller 15, the right side to accompany examination roller 6 and driving mechanism to form by driving wheel 1, guide wheel 13, left support roller 16, right support roller 7, a left side, can be referring to Fig. 1 and the disclosed CN2608972Y of correspondence, CN101241044A Chinese patent application.Driving mechanism drives driving wheel and guide wheel and support roller respectively, about accompany examination roller and guide wheel upper end and the corresponding interior side contacts of support roller and produce rolling, the bearing test Ball support about accompany the examination roller on, the upper end contacts with the driving wheel of bearing load weight, and the rolling of test ball is by trying the frictional force drives that roller contact point place produces with driving wheel and corresponding accompanying.
The test of bearing ball rolling contact fatigue life has the advantages that the test period is long, noise is big and destructiveness is strong, so present whole bearing ball torture test process by manually-operated control, bring following problem: experimenter's labour intensity is big, recording process is tediously long, complicated, inevitably can cause error; Testing machine breaks down, and is often untimely because of the manual monitoring processing, causes the damage of other mechanical part.In addition, manually operated fatigue life test machine also can cause erroneous judgement because of some interference, error as manual observation, the quilt that did not lose efficacy is tried to be mistaken as and was lost efficacy and end torture test as yet, the test figure that obtains can not be used, the human, financial, and material resources power of Xiao Haoing is done experiment and just has been wasted before this, has improved experimentation cost etc. thus greatly.Even more serious is that the sample ball if untimely shutdown will produce chain reaction, causes entire equipment to be damaged in case inefficacy or testing machine break down, and not only causes the certain economic loss, and the entail dangers to person and property safety.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of control device and control method thereof that can realize the bearing ball contact fatigue test machine of Based Intelligent Control is provided, for achieving the above object, the present invention adopts following technical proposals:
Described control device, be arranged in the described fatigue tester, this fatigue tester is mainly by driving wheel, guide wheel, support roller, accompany the examination roller, first motor of transmission driving rolls, second motor of transmission guide wheel and support roller and lubricating structure are formed, this control device comprises first near K switch 1, second near K switch 2, force transducer, oil pressure sensor, vibration transducer, temperature sensor, vibration signal amplifier, the temperature signal amplifier, the A/D modular converter, driver module, frequency converter, described near switch, force transducer is connected with the input end of oil pressure sensor with the A/D modular converter, described vibration signal amplifier and temperature signal amplifier input terminal are connected with temperature sensor with corresponding vibration transducer respectively, output terminal is connected with the corresponding input end of computing machine and driving circuit respectively, the driving circuit output terminal connects the Oil pump electrical machinery in the described lubricating structure, described first motor and frequency converter, frequency converter connects second motor.
The further design of described control device is, described driving circuit is made up of input resistance R, switching tube G, relay K A and contactor KM and interlock button SB2 ', selector button SB2, manual actuation of button SB3, manual stop button SB4, relay and contactor, input resistance R one end is connected with an output terminal of described A/D modular converter, one end connects the base stage of switching tube G, and the coil tandem of relay K A is on the collector of switching tube G; Interlock button SB2 ' and selector button SB2 interlock realize that interlock button SB2 ' opens the state that selector button SB2 is closed or the closed selector button SB2 of interlock button SB2 ' opens; The normally opened contact of relay K A and the two ends that are attempted by after interlock button SB2 ' be connected in series after selector button SB2, start button SB3 and stop button SB4 are connected in series, one normally opened contact of contactor is attempted by selector button SB2 two ends, and contactor coil is connected in series the output terminal V that the back forms driving circuit with selector button SB2, start button SB3, stop button SB4
L, this output terminal connects Oil pump electrical machinery M3 and two normally opened contacts by described contactor connect first motor and frequency converter respectively.
The further design of described control device is, described first places a side of driving rolls and guide wheel near switch and second respectively near switch, is used to measure the rotation number of turns of corresponding wheel.
The further design of described control device is, the side that described force transducer places described driving rolls to contact with described bearing ball is used for measuring to the added load of bearing ball; The side that described force transducer places described driving rolls to contact with described bearing ball is used for measuring to the added load of bearing ball; Described oil pressure sensor places the oil circuit of described lubricating structure, is used to measure the oil pressure of oil circuit; Described vibration transducer places on the rotation axis of driving rolls, is used to measure the driving rolls amplitude, and described temperature sensor places bearing ball and accompanies between the examination roller, is used to measure the temperature of bearing ball.
The control method of described control device comprises the steps:
1) selects power on mode, select knob SB2 by turn, select manually start or Auto Power On, if select manual power on mode, turn SB2 makes its closure, the power knob SB1 closure on the power circuit, oil pump is opened, press the described device of start button SB3 again and start working, as device quits work as described in making, and presses stop button SB4; If select Auto On Mod, then undertaken by following program;
2) parameter is set, the keyboard input following parameters by described computing machine: temperature early warning value T, vibration early warning value V, oil pressure early warning value P, working time H;
3) open automatic control program;
4) kind of torture test is selected;
5) by force transducer collection and demonstration initial load value, provide the load that needs increase or reduce, show final operating load;
6) by described near switch and sensor acquisition coherent signal, the signal of collection is through the conversion of the A-D analog-digital of A/D modular converter, corresponding digital signals is input to described computing machine, carries out following processing;
7) according to the two described driving wheels of gathering respectively near switch and the tach signal of guide wheel, differentiating bearing ball has fricton-tight, identical as both rotating speeds, fricton-tight; Inequality as both rotating speeds, slip is arranged, regulate guide wheel speed, make both rotating speeds identical;
8) whether arrive the analysis and judgement of setting test period, as the complete torture test of the right and wrong of carrying out, described fatigue tester is carried out analysis and judgement working time, if the working time＜if T, described fatigue tester continues operation; If working time 〉=T does not shut down, send alerting signal;
9) analysis and judgement of other correlation parameter:
A. if vibration signal＜V continues to gather next vibration signal; If vibration signal 〉=V sends alerting signal, described fatigue tester is shut down;
B. if temperature signal＜T continues to gather next temperature signal; If temperature signal 〉=T sends alerting signal, described fatigue tester is shut down;
C. if fuel injection pressure signal＞P continues to gather next fuel injection pressure signal; If fuel injection pressure signal≤P sends alerting signal, described fatigue tester is shut down.
The present invention records driving rolls and guide wheel between rotating speed near switch and second near switch according to first, whether the bearing ball of judging test produces slip, drive the motor speed of guide wheel by automatic adjusting from rotating, make the rotating speed of driving rolls and guide wheel consistent, to eliminate the skid state of being tried, make it be in the pure rolling state.In addition, the present invention picks up the multiple physical signalling that characterizes the testing machine state by the polytype sensor, these signals comprise signals such as loaded load, vibration, oily gentle oil pressure, these physical quantitys through sensor sensing are transformed into digital signal through the A/D module and are sent to computing machine, computing machine carries out analyzing and processing according to rule and the ultimate value set to these signals, as meet a certain rule or surpass the ultimate value that sets, produce corresponding control signal or alerting signal and testing machine is controlled or made the test auto-shut-off.Produce such beneficial effect thus: process of the test and result are by computing machine record automatically and accurately, accurately discern the duty of sample ball, can not produce artificial erroneous judgement and cause testing the also waste of consequent human, financial, and material resources power of termination, save experimentation cost, alleviate simultaneously experimenter's labour intensity greatly, improve the automaticity of test efficiency and test.Testing machine can in time be handled in case break down by computer monitoring, can eliminate the damage of the mechanical part that may be caused by these faults.Can make test safer thus, equipment is protected better,, the warranty test machine is operation effectively reliably.
Description of drawings
Fig. 1 is the synoptic diagram that fatigue tester and sensor are provided with the position.
Fig. 2 is the structural representation of control device of the present invention.
Fig. 3 is the control block diagram of control device of the present invention.
Among the figure, 1 vibration transducer, 2 driving wheels, 3 thermopairs, 4 oil pipelines, 5 sample balls, the examination roller is accompanied on 6 right sides, 7 right support rollers, 8 oil pressure sensors, 9 fuel tanks, 10 first near switch, 13 guide wheels, the examination roller is accompanied on 14 left sides, 15 force transducers, and 16 left support rollers, 17 second near switch, 19-temperature signal amplifier, 21A/D modular converter, 22 vibration signal amplifiers, 23 driving circuits, 24 frequency converters, 25 computing machines
Embodiment
Control device of the present invention places bearing ball contact fatigue test machine shown in Figure 1, this testing machine mainly accompanies examination roller 14, the right side to accompany the second motor (not shown) and the lubricating structure of the first motor (not shown), transmission guide wheel 13 and two support rollers 7,16 of examination roller 6, transmission driving wheel 2 to form by driving wheel 2, guide wheel 13, left support roller 16, right support roller 7, a left side, about accompany examination roller 14,6 and guide wheel 13 upper ends and the corresponding interior side contacts of left and right sides support roller, about accompany the rolling that tries roller 14,6 by guide wheel 13 with the back-up roller transmission that contacts is arranged with it.Accompany about bearing test ball 5 is bearing on the examination roller 14,6, the following end in contact of the driving wheel 2 of the upper end of bearing test ball 5 and bearing load weight, the rolling of test ball 5 by driving wheel 2, about accompany the drivings of examination roller 14,6.
Control device of the present invention is mainly formed near switch 17, force transducer 15, oil pressure sensor 8, vibration transducer 1, temperature sensor (thermopair 3), vibration signal amplifier 22, temperature signal amplifier 19, A/D modular converter 21, driver module 23 and frequency converter 24 near switch 10, second by first as shown in Figure 2.First is connected near switch 17, force transducer 15 and the input end of oil pressure sensor 8 with A/D modular converter 21 near switch 10, second, the input end of vibration signal amplifier 22 and temperature signal amplifier 19 is connected with thermopair 3 with vibration transducer 1 respectively, and the output terminal of A/D modular converter 21 is connected with the corresponding input end of computing machine 25 and driving circuit 23 respectively.Driving circuit 23 is made up of input resistance R, switching tube G, relay K A and contactor KM and interlock button SB2 ', selector button SB2, start button SB3, stop button SB4, relay and contactor.Input resistance R one end is connected with an output terminal of described A/D modular converter, and an end connects the base stage of switching tube G, and the coil tandem of relay K A is on the collector of switching tube G.Interlock button SB2 ' and selector button SB2 interlock, that is: when interlock button SB2 ' was in open mode, selector button SB2 was in closure state; Maybe when interlock button SB2 ' was in closure state, selector button SB2 was in open mode.The normally opened contact of relay K A and the two ends that are attempted by after interlock button SB2 ' be connected in series after being connected in series by selector button SB2, start button SB3 and stop button SB4.The normally opened contact of contactor is attempted by selector button SB2 two ends, and contactor coil is connected in series the output terminal V that the back forms driving circuit with selector button SB2, start button SB3, stop button SB4
L, this output terminal connects Oil pump electrical machinery M3 and two normally opened contact KM by described contactor connect first motor M 1 and frequency converter 24 respectively.Second motor M 2 and frequency converter 24 couplings are to obtain the power supply of respective frequencies.
Above-mentioned first adopts TL-5MC1 type Hall elements near switch 10, second near switch 17, is used for measuring the rotating speed of testing machine driving wheel 2 shown in Figure 1 and guide wheel 13, places a corresponding driving wheel and a side of introduction respectively.Force transducer 15 adopts CL-YD-301 type force transducer, and this force transducer places driving wheel 2 and sample ball 5 contacted sides, is used for measuring the added load of bearing ball.Oil pressure sensor 8 adopts PTT206 type oil pressure sensor, places the oil circuit 4 of the lubricating structure of testing machine, is used to measure the oil pressure of oil circuit.Vibration transducer 1 adopts the CA-YD-103 type, and this sensor 1 places on the rotation axis of driving wheel 2, is used to measure the amplitude of driving wheel 2.Temperature sensor adopts T-500 type thermopair 3 to place sample ball 5 and accompanies between the examination roller 6 (14), is used to measure the temperature of sample ball 5.The A/D modular converter adopts the NI6212 capture card.Switching tube G adopts power switch pipe TIP122 Darlington transistor.
Contrast Fig. 3, the control method of above-mentioned control device, carry out as follows:
1) at first selects power on mode, select button SB2 to select manually start or Auto Power On by turn.If select manual power on mode, the turn selector button makes this button closure to SB2.Power knob SB1 closure on the power circuit, Oil pump electrical machinery M3 work, oil pump is opened.Press start button SB3 again apparatus of the present invention are started working, as apparatus of the present invention are quit work, press stop button SB4.If select Auto On Mod, the turn selector button makes this button closure to SB2 ', is then undertaken by following program:
2) parameter then is set, the keyboard input correlation parameter by computing machine in apparatus of the present invention: temperature early warning value T, vibration early warning value V, oil pressure early warning value P, working time H.
3) after above-mentioned request was sent, described computing machine sent the request of opening automatic control program.
4) kind of torture test is selected, fully whether to torture test is selected, and as not being complete torture test, test period is set.
5) gather the initial load value, computing machine at first sends the signal of collection load, then according to the initial load value and the predefined operating load value of gathering, is shown the load value that needs increase or reduce by display.
6) gather correlation parameter, computing machine sends collecting temperature, vibration, oil pressure value, driving rolls and guide wheel and rotates the number of turns and the signal of working time.First near switch, second signal near the switch collection, is input to the NI6212 capture card through input port DI1 and DI2, carries the driving rolls of current collection and guide wheel to rotate the number of turns, thereby obtain the rotating speed of driving rolls and guide wheel; The signal that force transducer picks up enters above-mentioned capture card through input port AI2 and AI1 respectively, obtains the size of loaded load, thereby obtains the contact stress value; The vibration signal that vibration transducer picks up is amplified after input port AI3 is input to the NI6212 capture card by corresponding amplifier; Oil pressure sensor enters above-mentioned capture card to the input fuel injection pressure signal through AI1; Temperature sensor is that the signal amplifier of temperature signal by correspondence of thermopair collection enters above-mentioned capture card through input port AI4.The disconnection of capture card data output DO output signal pilot relay KA, contactor KM also disconnects after the disconnection of relay K A, thereby controls the i.e. shutdown of closing of motor, and the above-mentioned signal of Computer Storage also passes through corresponding display demonstration.Its concrete processing procedure process described as follows:
7) prevent the control that bearing ball produce to slide, computing machine carries out analyzing and processing according to first, second driving wheel gathered respectively near switch and the tach signal of guide wheel, has fricton-tight thereby differentiate bearing ball.If the rotating speed of driving rolls and guide wheel is identical, fricton-tight; If the rotating speed of driving rolls and guide wheel is inequality, slip is arranged, then adjust the rotating speed of guide wheel.Start frequency converter this moment, regulates the rotating speed that drives guide wheel motor M 2, equal until the rotating speed of driving wheel and guide wheel.
8) whether arrive the analyzing and processing of setting test period, as the complete torture test of the right and wrong of carrying out, described fatigue tester is carried out analysis and judgement working time, if the working time＜if T, described fatigue tester continues operation; If working time 〉=T does not shut down, send alerting signal, described fatigue tester is shut down, and shows the prompting of " test period arrives " on corresponding display;
9) analyzing and processing of other correlation parameter:
A. if vibration signal＜V continues to gather next vibration signal; If vibration signal 〉=V, send alerting signal, described fatigue tester is shut down, on corresponding display, show " bearing ball lost efficacy or other rotating part damages, and please check ... " prompting;
B. if temperature signal＜T continues to gather next temperature signal; If temperature signal 〉=T, send alerting signal, described fatigue tester is shut down, on corresponding display, show " temperature is too high, please check lubricated whether normal ... " prompting;
C. if fuel injection pressure signal＞P continues to gather next fuel injection pressure signal; If fuel injection pressure signal≤P, send alerting signal, described fatigue tester is shut down, on corresponding display, show " the lubricating system oil pressure is undesired, please check ... " prompting.
Claims (5)
1. the control device of bearing ball contact fatigue test machine, be arranged on mainly by driving wheel, guide wheel, support roller, accompany the examination roller, first motor of transmission driving rolls, in the fatigue tester that second motor of transmission guide wheel and support roller and lubricating structure are formed, it is characterized in that described control device comprises first near switch, second near switch, force transducer, oil pressure sensor, vibration transducer, temperature sensor, vibration signal amplifier, the temperature signal amplifier, the A/D modular converter, driver module, frequency converter, described near switch, force transducer is connected with the input end of oil pressure sensor with the A/D modular converter, described vibration signal amplifier and temperature signal amplifier input terminal are connected with temperature sensor with corresponding vibration transducer respectively, output terminal is connected with the corresponding input end of computing machine and driving circuit respectively, the driving circuit output terminal connects the Oil pump electrical machinery in the described lubricating structure, described first motor and frequency converter, frequency converter connects second motor.
2. the control device of bearing ball contact fatigue test machine according to claim 1, it is characterized in that described driving circuit is made up of input resistance R, switching tube G, relay K A and contactor KM and interlock button SB2 ', selector button SB2, start button SB3, stop button SB4, input resistance R one end is connected with an output terminal of described A/D modular converter, the base stage of one end switch pipe G, the coil tandem of relay K A is on the collector of switching tube G; Interlock button SB2 ' and selector button SB2 interlock realize that interlock button SB2 ' opens the state that selector button SB2 is closed or the closed selector button SB2 of interlock button SB2 ' opens; The normally opened contact of relay K A and the two ends that are attempted by after interlock button SB2 ' be connected in series after selector button SB2, start button SB3 and stop button SB4 are connected in series, one normally opened contact of contactor is attempted by selector button SB2 two ends, and contactor coil is connected in series the output terminal V that the back forms driving circuit with selector button SB2, start button SB3, stop button SB4
L, this output terminal connects Oil pump electrical machinery M3 and two normally opened contacts by described contactor connect first motor and frequency converter respectively.
3. the control device of bearing ball contact fatigue test machine according to claim 1 is characterized in that described first places a side of driving rolls and guide wheel near switch and second respectively near switch, is used to measure the rotation number of turns of corresponding wheel.
4. the control device of bearing ball contact fatigue test machine according to claim 1 is characterized in that the side that described force transducer places described driving rolls to contact with described bearing ball, is used for measuring to the added load of bearing ball; Described oil pressure sensor places the oil circuit of described lubricating structure, is used to measure the oil pressure of oil circuit; Described vibration transducer places on the rotation axis of driving rolls, is used to measure the driving rolls amplitude, and described temperature sensor places bearing ball and accompanies between the examination roller, is used to measure the temperature of bearing ball.
5. the control method of control device according to claim 1 is characterized in that comprising the steps:
1) selects power on mode, select knob SB2 by turn, select manually start or Auto Power On, if select manual power on mode, the turn selector button is to SB2, make its closure, power knob SB1 closure on the power circuit, oil pump is opened, and presses the described control device of start button SB3 again and starts working, as control device quits work as described in making, and presses stop button SB4; If select Auto On Mod, turn selector button SB2 ' makes its closure, is then undertaken by following program;
2) parameter is set, the keyboard input following parameters by described computing machine: temperature early warning value T, vibration early warning value V, oil pressure early warning value P, working time H;
3) open automatic control program;
4) kind of torture test is selected;
5) by force transducer collection and demonstration initial load value, provide the load that needs increase or reduce, show final operating load;
6) by described near switch and sensor acquisition coherent signal, the signal of collection is through the conversion of the A-D analog-digital of A/D modular converter, corresponding digital signals is input to described computing machine, carries out following processing;
7) according to the two described driving wheels of gathering respectively near switch and the tach signal of guide wheel, differentiating bearing ball has fricton-tight, identical as both rotating speeds, fricton-tight; Inequality as both rotating speeds, slip is arranged, regulate guide wheel speed, make both rotating speeds identical;
8) whether arrive the analyzing and processing of setting test period, as the complete torture test of the right and wrong of carrying out, described fatigue tester is carried out analysis and judgement working time, if working time＜T, described fatigue tester continues operation; If working time 〉=T sends alerting signal, described fatigue tester is shut down;
9) analyzing and processing of other correlation parameter:
A. if vibration signal＜V continues to gather next vibration signal; If vibration signal 〉=V sends alerting signal, described fatigue tester is shut down;
B. if temperature signal＜T continues to gather next temperature signal; If temperature signal 〉=T sends alerting signal, described fatigue tester is shut down;
C. if fuel injection pressure signal＞P continues to gather next fuel injection pressure signal; If fuel injection pressure signal≤P sends alerting signal, described fatigue tester is shut down.
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| CN102650564A (en) * | 2012-04-19 | 2012-08-29 | 中国工程物理研究院总体工程研究所 | Method for quickly judging open loop state in vibration test and protecting device |
| CN103630361A (en) * | 2013-12-19 | 2014-03-12 | 重庆大学 | Intelligent bearing monitoring system based on transient speed and method of system |
| CN104615041A (en) * | 2014-12-25 | 2015-05-13 | 北京航天测控技术有限公司 | Intermittent control device for overcast machine test |
| CN108627410A (en) * | 2018-04-16 | 2018-10-09 | 南通大学 | A kind of bearing ball life test machine |
| CN108956288A (en) * | 2018-05-21 | 2018-12-07 | 中国航发哈尔滨轴承有限公司 | Loading mechanism propulsion device for material rolling contact fatigue-testing |
| CN112857799A (en) * | 2021-02-25 | 2021-05-28 | 湖南省水利投地方电力有限公司 | Pumped storage unit shafting vibration acquisition equipment |
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Cited By (10)
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| CN103630361B (en) * | 2013-12-19 | 2016-06-08 | 重庆大学 | Intelligent bearing monitoring system and method thereof based on transition speed |
| CN104615041A (en) * | 2014-12-25 | 2015-05-13 | 北京航天测控技术有限公司 | Intermittent control device for overcast machine test |
| CN108627410A (en) * | 2018-04-16 | 2018-10-09 | 南通大学 | A kind of bearing ball life test machine |
| CN108956288A (en) * | 2018-05-21 | 2018-12-07 | 中国航发哈尔滨轴承有限公司 | Loading mechanism propulsion device for material rolling contact fatigue-testing |
| CN108956288B (en) * | 2018-05-21 | 2020-11-20 | 中国航发哈尔滨轴承有限公司 | A loading mechanism advancing device for material rolling contact fatigue test |
| CN112857799A (en) * | 2021-02-25 | 2021-05-28 | 湖南省水利投地方电力有限公司 | Pumped storage unit shafting vibration acquisition equipment |
| CN112857799B (en) * | 2021-02-25 | 2023-04-14 | 湖南省水利投地方电力有限公司 | Pumped storage unit shafting vibration acquisition equipment |
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| CN101975660B (en) | 2015-10-21 |
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Effective date of registration: 20200907 Address after: No.1, Sima Road, Jintan Economic Development Zone, Changzhou City, Jiangsu Province Patentee after: Jiangsu guoci Jinsheng Ceramic Technology Co., Ltd Address before: 226019 Jiangsu city of Nantong province sik Road No. 9 School of mechanical engineering Nantong University Patentee before: NANTONG University |