CN106840673A - Marine diesel slides base bearing pyroelectric signal caliberating device and scaling method - Google Patents
Marine diesel slides base bearing pyroelectric signal caliberating device and scaling method Download PDFInfo
- Publication number
- CN106840673A CN106840673A CN201710085429.9A CN201710085429A CN106840673A CN 106840673 A CN106840673 A CN 106840673A CN 201710085429 A CN201710085429 A CN 201710085429A CN 106840673 A CN106840673 A CN 106840673A
- Authority
- CN
- China
- Prior art keywords
- signal
- bearing
- eccentric shaft
- experiment
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Base bearing pyroelectric signal caliberating device is slided the present invention relates to a kind of marine diesel, it includes industrial computer, programmable logic controller (PLC), servo-driver, data collecting card, motor, front support bearing, rear support bearing, experiment bearing, speed probe, thermoelectric pickup, torque sensor, watt back of the body temperature sensor, lubricating oil temperature sensor, lubricant pressure sensor, hydraulic cylinder, hydraulic oil container, hydraulic pump, grease-box, grease pump, lubricating oil heater, hydrostatic sensor and displacement signal sensor；The present invention uses flexible feedback control strategy, it is ensured that lifting rotating speed and adjustment load are steadily excessive, there is provided the variable working condition condition of test bearing stabilization, realizes pyroelectric signal dynamic calibration.
Description
Technical field
The present invention relates to Marine Diesels field, and in particular to a kind of marine diesel slides base bearing pyroelectric signal
Caliberating device and scaling method.
Background technology
One of main friction pairs as diesel engine, eccentric shaft and base bearing are the key components and parts and rapid wear of diesel engine
Part.Eccentric shaft stress in motion process is complicated, in diesel engine working cycles in periodically variable alternate load effect under,
Base bearing easily heating and abrasion.The uneven excessive wear of base bearing can cause that bearing clearance increases, and causes axle journal to master again
The impulsive force increase of bearing, directly affects the overall work performance of diesel engine；The excessive wear of base bearing can also cause cylinder sleeve, work
The Fast Wearing of plug and piston ring, causes combustion chamber combustion gas gas blowby and fuel consumption to increase, and directly affects the output of diesel engine
Power.Statistics show that the energy loss caused by friction accounts for the 80% of diesel engine total energy loss, wherein because of bearing wear
Caused energy loss accounts for the 50%~60% of diesel engine overall friction power loss.Serious main bearing wear is resulted even in
Eccentric shaft distortion, embrace it is molten fracture and the serious accident such as eccentric axle box blast generation, can not only bring heavy economic losses, it is heavier
What is wanted is that can bury huge hidden danger to the safe operation of diesel engine.
The method of current monitoring ship diesel engine main bearing state of wear mainly has fluid method, temperature method, vibratory drilling method and answers
The methods such as political reform, by reasons such as many, the movable part complicated movements of diesel engines signal driving source, these methods can not be real
When, it is accurate, position specific failure base bearing.Under diesel engine main bearing normal operation situation, there is lubrication between eccentric shaft and bearing shell
Oil film separates, it is to avoid two kinds of metal directly contacts, and oil drag produces heat, causes bearing bush temperature significantly to raise, and joins
Examine document：Zhu Jun, Yang Jianguo, Sun Bo, in thermo-electric method experimental study [J] of the remaining of China forever monitorings diesel engine main bearing state of wear
Combustion engine engineering, 2014, (04):79-84. also devises the marine diesel sliding bearing thermo-electrically sensor based on pyroelectric effect,
Eccentric shaft-body thermoelectric force can be drawn and there is wear spindle to hold according to pyroelectric signal identification.Due to different thermoelectric pickups
Measurement characteristicses difference, it is necessary to be demarcated to it；The pass of different main and its pyroelectric signal amplitude of bush material and wear extent
It is disunity, also needs to be demarcated.
The content of the invention
Base bearing pyroelectric signal caliberating device and demarcation side are slided it is an object of the invention to provide a kind of marine diesel
Method, the present invention uses flexible feedback control strategy, it is ensured that lifting rotating speed and adjustment load are steadily excessive, there is provided test bearing is steady
Fixed variable working condition condition, realizes pyroelectric signal dynamic calibration.
In order to solve the above technical problems, a kind of marine diesel disclosed by the invention slides base bearing pyroelectric signal demarcates dress
Put, it is characterised in that it includes industrial computer, programmable logic controller (PLC), servo-driver, data collecting card, motor, preceding branch
Support bearing, rear support bearing, experiment bearing, speed probe, thermoelectric pickup, torque sensor, watt back of the body temperature sensor, profit
Oil temperature sensor, lubricant pressure sensor, hydraulic cylinder, hydraulic oil container, hydraulic pump, grease-box, grease pump, lubrication
Oil heater, hydrostatic sensor and displacement signal sensor；
Wherein, the signal output part of industrial computer connects the signal input part of programmable logic controller (PLC), FPGA
The servo drive control signal output part of controller connects the signal input part of servo-driver, the signal output of servo-driver
The control signal input of end connection motor, the output shaft of motor is fixedly and coaxially connected with the front end of eccentric shaft, experiment bearing
Outer ring is arranged on the top of the piston rod of hydraulic cylinder, and lubricating oil temperature sensor and profit are provided with the grease channel for testing bearing
Lubricating oil pressure sensor, to test and be provided with a watt back of the body temperature sensor on the bearing shell detection hole of bearing, and torque sensor is arranged on inclined
The preceding coax segments of heart axle, the preceding coax segments of eccentric shaft are assemblied in the inner ring of front support bearing, the middle part gearratio of cycloid axle formation of eccentric shaft
It is assemblied in the inner ring of experiment bearing, the rear coax segments of eccentric shaft are assemblied in the inner ring of rear support bearing, after rear coax segments
End is provided with gear, and the speed probe for prototype gear rotating speed is provided with gear, and the axle center of gear is fixedly connected thermoelectricity
The input shaft of sensor, the photoelectric encoder carried inside thermoelectric pickup is used to detect the input shaft of thermoelectric pickup
So as to obtain the angular signal of eccentric shaft；
The input connection hydraulic oil container of the hydraulic pump, the output end of hydraulic pump connects upper piston area by upper charge valve
Hydraulic cylinder cavity, the output end of hydraulic pump also connected the hydraulic cylinder cavity of piston lower portion by lower charge valve, set in hydraulic cylinder
There is hydrostatic sensor, experiment bearing is provided with displacement signal sensor；
The input connection grease-box of grease pump, the output end of grease pump connects the input of lubricating oil heater
End, the output end of lubricating oil heater is respectively connected to the lubricating oil input port of front support bearing, rear support bearing and experiment bearing；
The signal output part of the thermoelectric pickup connects the pyroelectric signal input of data collecting card, photoelectric encoder
Signal output part connects the angular signal input of data collecting card, the signal output part connection data collecting card of speed probe
Tach signal input, lubricating oil temperature sensor signal output part connection data collecting card lubricating oil temperature signal it is defeated
Enter end, the signal output part of lubricant pressure sensor connects the lubricating oil pressure signal input part of data collecting card, watt back of the body temperature
Spend watt back of the body temperature signal input, the signal output part of torque sensor of the signal output part connection data collecting card of sensor
The torque signal input of data collecting card is connected, the signal output part of hydrostatic sensor connects the hydraulic pressure signal of data collecting card
Input, the signal output part of displacement signal sensor connects the displacement signal input of data collecting card；
The hydraulic pump control signal output part of programmable logic controller (PLC) connects the control signal input of hydraulic pump, can compile
The grease pump control signal output of journey logic controller connects the control signal input of grease pump.
A kind of marine diesel using above-mentioned caliberating device slides base bearing pyroelectric signal scaling method, and its feature exists
In it comprises the following steps：
Step 1：Programmable logic controller (PLC) is rotated by servo-driver controlled motor, and motor drives eccentric shaft turns,
Now the gap between the middle part gearratio of cycloid axle formation of eccentric shaft and experiment bearing is normal clearance；
Step 2：PLC controls hydraulic pump and grease pump are opened, while programmable logic controller (PLC) control
Lubricating oil heater work processed, now, spring bearing, rear support bearing and experiment bearing provide lubricating oil to grease-box forward,
Hydraulic cylinder is acted, and the piston rod of hydraulic cylinder increases the middle part gearratio of cycloid axle formation of eccentric shaft at interval of Preset Time specifies load, directly
Reach the rated load of eccentric shaft；
Step 3：When the piston rod of hydraulic cylinder reaches the rated load of eccentric shaft to the load that middle part gearratio of cycloid axle formation applies, number
Angle of eccentricity signal that the experiment bearing pyroelectric signal that is exported according to capture card collection thermoelectric pickup, photoelectric encoder are exported,
Speed probe output eccentric shaft tach signal, lubricating oil temperature sensor output experiment bearing oil temperature signal,
The experiment bearing oil pressure signal of lubricant pressure sensor output, the eccentric bearing pad back of the body temperature of watt back of the body temperature sensor output
Degree signal, the eccentric shaft torque signal of torque sensor output, cylinder hydraulic signal, the displacement signal of hydrostatic sensor output
The experiment bearing displacement signal of sensor output, and by the signal transmission of above-mentioned collection to industrial computer；
Step 4：Industrial computer is by eccentric shaft tach signal, experiment bearing oil temperature signal, experiment bearing oil
Pressure signal and eccentric shaft torque signal enter to compare with default regulation control strategy respectively, are exported by programmed logic controller
The control signal of closed loop, makes eccentric rotating speed, experiment bearing lubrication oil temperature, experiment bearing lubrication oil pressure and eccentric shaft moment of torsion
Stabilization is on preset value；
Industrial computer is by angle of eccentricity signal analysis, recognizing each cycle initial time, and eccentric shaft turns one week are right
A cycle is answered, experiment bearing pyroelectric signal, experiment bearing displacement signal, cylinder hydraulic signal are pressed into periodic segment, obtained
Experiment bearing segmentation pyroelectric signal, experiment bearing displacement subsection signal, cylinder hydraulic block signal, then will test axle
Segmentation pyroelectric signal, experiment bearing displacement subsection signal, cylinder hydraulic block signal is held to do and averagely synthesize paracycle
The experiment bearing pyroelectric signal of a cycle, experiment bearing displacement signal and cylinder hydraulic signal；
Industrial computer is several with displacement signal sensor using eccentric shaft by the experiment bearing displacement signal of a cycle
What relation and euler algorithm are calculated the minimum oil film thickness between the middle part gearratio of cycloid axle formation of eccentric shaft and real axis watt, and will most
The cylinder hydraulic signal write into Databasce of small oil film thickness and a cycle, as the auxiliary monitoring parameter of eccentric shaft abrasion；
Industrial computer will test the pyroelectric signal amplitude of bearing a cycle as polar radius, and angle of eccentricity is drawn as angular coordinate
The polar diagram of bearing wear pyroelectric signal, and the maximum of pyroelectric signal in polar diagram is extracted as pyroelectric signal feature
Property；
Step 5：Step-by-step movement increases the gap between the middle part gearratio of cycloid axle formation of eccentric shaft and experiment bearing, until between described
Gap reaches the maximal clearance that normal work is allowed between the middle part gearratio of cycloid axle formation of eccentric shaft and experiment bearing, then according to step
3 obtain the corresponding pyroelectric signal characteristic in each described gap with the method for step 4, by each gap and corresponding thermoelectricity feature
Value is mapped, and is formed and demarcates collection of illustrative plates, that is, complete marine diesel and slide the demarcation of base bearing pyroelectric signal.
Inventive principle of the invention is：
According to the formation basic theory and feature of lubricating film between friction pair, lubricating status can be divided into：1st, hydrldynamic pressure lubrication；2、
Hydrostatic lubrication；3rd, elastic hydrodynamic lubrication；4th, boundary lubrication；5th, five kinds of fundamental types such as dry condition.For reality
Friction pair in the machinery of border, is generally always at the simultaneous mixed lubricating state of several lubricating status.Base bearing is different
The different oil film thickness of state of wear correspondence, different oil film thickness determines that frictions different between base bearing and axle journal are strong again
Degree, different frictional strength further means that different mechanical energy losses, and the mechanical energy of loss is converted into heat energy makes the temperature of friction pair
Degree is raised；According to Seebeck thermo-electrically effect theory, every two kinds of different contacting metals can constitute thermocouple --- so
Due to mutual contact, base bearing constitutes two electrodes of thermocouple with bent axle, generates thermo-electrically effect.Main bearing lubrication shape
State is relevant with pressure and temperature, and the present invention is by controlling main journal bearing and oil temperature, it is ensured that bearing lubricates shape in identical
State works, and controls wear extent by changing bearing shell-shaft clearance or carry out bearing shell fatigue test to monitor bearing bush temperature to monitor axle
Wear extent is held, thermo-electrically signal is analyzed, the relation of thermo-electrically signal and wear extent is determined, so as to demarcate thermo-electrically signal.
There are temperature difference, density contrast and effusion work difference (up to tens of by the working mechanism of thermocouple, the reason for produce thermoelectrical potential
Millivolt).The potential produced by temperature difference is called Thomson potential, to homogeneous metallic conductor A of the same race, if two ends temperature is T1(work
Make end), T2(reference end), and T1＞ T2, then thermoelectric force EA(T1,T2) be：
For the closed-loop path that metallic conductor A, B are constituted, the algebraical sum E of thermoelectric forceAB(T1,T2) be：
In above formula, K is Boltzmann constant, K=1.38 × 10-23J/K；T is kelvin degree, and unit is K；E is electronics
Electricity, e=1.6 × 10-19C；NA(T) density of the free electron of metal A, N when for temperature TB(T) when being temperature T metal B from
By the density of electronics.
Metallic conductor A and B are contacted with each other, electron exchange also occurs between the two, reached and just generated in loop after balancing
Contact potential difference.Produce contact potential difference the reason for be：(1) two kind of work function of metal electron is different；(2) two kinds of electricity of metal
Sub- density is different.
Temperature T1The contact potential π that tip node is producedAB(T1) be：
Another contact T can similarly be obtained2The contact potential π at placeAB(T2), a pair of the algebraically of contact potential in such closed-loop path
With for：
In metallic conductor A, in the closed-loop path that B is connected into, existing contact potential has thermoelectric force, total thermoelectrical potential E againAB
(T1,T2) it is both algebraical sums, formula (1), (2) algebraic addition are had：
As can be seen from the above equation, the size of closed-loop path thermoelectrical potential is not only relevant with metallic conductor A, B, and with temperature
Degree T1And T2Relevant, after thermode material determines, thermoelectrical potential size is dependent on T1And T2Size.Have been proven in practice that, thermoelectricity
The size of gesture and temperature difference dT into approximate direct ratio, i.e. dEAB(T1,T2)=SAB(T) dT, SAB(T) it is the Thermoelectric Power of metal A, B, i.e.,
Seebeck coefficient.
On the premise of with reference to base bearing temperature rise, by the gap according to setting step-size change bearing shell-axle, thermoelectricity is extracted
Reflect the characteristic quantity of main bearing wear in gesture measurement result, reach the purpose of pyroelectric signal demarcation.
Beneficial effects of the present invention：
1st, the present invention uses modularized design, can realize flexible configuration according to marine low speed diesel engine working condition, enhancing
The adaptability of device.
2nd, the present invention uses flexible feedback control strategy, it is ensured that lifting rotating speed and adjustment load are steadily excessive, there is provided examination
The variable working condition condition of bearing stabilization is tested, pyroelectric signal dynamic calibration is realized.
3rd, the present invention can be by adjusting the speed of mainshaft, diesel oil eccentric drive shaft (bent axle)-body thermoelectricity under simulation different rotating speeds
Gesture changes.
3rd, the present invention can be by adjusting hydraulic coupling, diesel oil eccentric drive shaft-body thermoelectrical potential change under simulation different load.
4th, the present invention can be by changing the state of wear of the space change bearing of axle-bearing shell, it is to avoid prolonged abrasion
Experiment, reduces run time, improves device normalization efficiency.
5th, the present invention can be by testing the control of sliding bearing oil temperature and inlet pressure, the different lubrications of simulation bearing
State, to ensure the accuracy of thermo-electrically signal scaling result, realizes the demarcation of heat-electric transducer under Different Lubrication Conditions Used.
6th, the present invention uses modular shaft-design bearing, by changing experiment bearing shell and eccentric eccentric shaft, to adapt to not
With the marine low speed diesel engine of friction pair material, the versatility of device is improve.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is that main bearing wear pyroelectric signal of the invention demarcates collection of illustrative plates.
Wherein, 1-industrial computer, 2-programmable logic controller (PLC), 3-servo-driver, 4-data collecting card, 5-
Motor, 6-front support bearing, 7-rear support bearing, 8-experiment bearing, 9-speed probe, 10-photoelectric encoder,
11-thermoelectric pickup, 12-torque sensor, 13-watt back of the body temperature sensor, 14-lubricating oil temperature sensor, 15-profit
Lubricating oil pressure sensor, 16-hydraulic cylinder, 17-hydraulic oil container, 18-hydraulic pump, 19-grease-box, 20-grease pump,
21-lubricating oil heater, 22-eccentric shaft, 22.1-preceding coax segments, 22.2-middle part gearratio of cycloid axle formation, 22.3-rear coax segments,
23-gear, 24-boss, 25-upper charge valve, 26-lower charge valve, 27-hydrostatic sensor, 28-displacement signal sensing
Device.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail：
Marine diesel of the invention slides base bearing pyroelectric signal caliberating device, and it includes industrial computer 1, may be programmed and patrol
Volume controller 2, servo-driver 3, data collecting card 4, motor 5, front support bearing 6, rear support bearing 7, experiment bearing 8, turn
Fast sensor 9, thermoelectric pickup 11, torque sensor 12, watt back of the body temperature sensor 13, lubricating oil temperature sensor 14, lubrication
Oil pressure force snesor 15, hydraulic cylinder 16, hydraulic oil container 17, hydraulic pump 18, grease-box 19, the heating of grease pump 20, lubricating oil
Device 21, hydrostatic sensor 27 and displacement signal sensor 28；
Wherein, the signal output part of industrial computer 1 connects the signal input part of programmable logic controller (PLC) 2, programmable to patrol
The servo drive control signal output part for collecting controller 2 connects the signal input part of servo-driver 3, the letter of servo-driver 3
Number output end connects the control signal input of motor 5, and output shaft and the front end of eccentric shaft 22 of motor 5 are fixedly and coaxially connected,
The outer ring of experiment bearing 8 is arranged on the top of the piston rod of hydraulic cylinder 16, and lubricating oil is provided with the grease channel for testing bearing 8
Temperature sensor 14 and lubricant pressure sensor 15, to test and be provided with a watt back of the body temperature sensor on the bearing shell detection hole of bearing 8
13, torque sensor 12 is arranged on the preceding coax segments 22.1 of eccentric shaft 22, and the preceding coax segments 22.1 of eccentric shaft 22 are assemblied in preceding branch
Support in the inner ring of bearing 6, the middle part gearratio of cycloid axle formation 22.2 of eccentric shaft 22 is assemblied in the inner ring of experiment bearing 8, eccentric shaft 22
Coax segments 22.3 are assemblied in the inner ring of rear support bearing 7 afterwards, and the rear end of rear coax segments 22.3 is provided with gear 23, on gear 23
The speed probe 9 for the rotating speed of prototype gear 23 is provided with, the axle center of gear 23 is fixedly connected the input of thermoelectric pickup 11
Axle, the photoelectric encoder 10 carried inside thermoelectric pickup 11 is used to the input shaft of thermoelectric pickup 11 detect so as to obtain
To the angular signal of eccentric shaft 22；
The input connection hydraulic oil container 17 of the hydraulic pump 18, the output end of hydraulic pump 18 is connected by upper charge valve 25
The cavity of hydraulic cylinder 16 of upper piston area, the output end of hydraulic pump 18 also connects the hydraulic cylinder 16 of piston lower portion by lower charge valve 26
Hydrostatic sensor 27 is provided with cavity, hydraulic cylinder 16, experiment bearing 8 outer ring is provided with displacement signal sensor 28；
The input connection grease-box 19 of grease pump 20, the output end connection lubricating oil heater 21 of grease pump 20
Input, the output end of lubricating oil heater 21 is respectively connected to the profit of front support bearing 6, rear support bearing 7 and experiment bearing 8
Lubricating oil input port；
The signal output part of the thermoelectric pickup 11 connects the pyroelectric signal input of data collecting card 4, photoelectric coding
The signal output part of device 10 connects the angular signal input of data collecting card 4, the signal output part connection number of speed probe 9
According to the tach signal input of capture card 4, the signal output part of lubricating oil temperature sensor 14 connects the lubrication of data collecting card 4
Oil temperature signal input part, the lubricating oil pressure letter of the signal output part connection data collecting card 4 of lubricant pressure sensor 15
Number input, watt back of the body temperature signal input, moment of torsion of the signal output part connection data collecting card 4 of watt back of the body temperature sensor 13
The signal output part of sensor 12 connects the torque signal input of data collecting card 4, the signal output part of hydrostatic sensor 27
The hydraulic pressure signal input of data collecting card 4 is connected, the signal output part connection data collecting card 4 of displacement signal sensor 28
Displacement signal input；
The hydraulic pump control signal output part of programmable logic controller (PLC) 2 connects the control signal input of hydraulic pump 18,
The grease pump control signal output of programmable logic controller (PLC) 2 connects the control signal input of grease pump 20, can compile
The lubricating oil temperature control signal output of journey logic controller 2 connects the control signal input of lubricating oil heater 21.
In above-mentioned technical proposal, the outer face of the gear 23 is fixedly connected with boss 24, and the boss 24 is provided with connection
Axle sleeve, coupling band is coaxially disposed with gear 23, and the input shaft of thermoelectric pickup 11 is fixedly connected coupling band.
In above-mentioned technical proposal, the outer ring of the front support bearing 6 and rear support bearing 7 is each attached on support.
In above-mentioned technical proposal, the foil gauge of the torque sensor 12 is attached to the preceding coax segments 22.1 of eccentric shaft 22.
In above-mentioned technical proposal, programmable logic controller (PLC) 2 drives 22 turns of eccentric shaft to the control signal of servo-driver 3
It is dynamic, spring bearing 6 and rear support bearing 7 as eccentric shaft 22 Gravity support, in horizontal and vertical position school.When eccentric shaft 22
During rotation, the lubricating oil brought into forms oil film wedge around it, can bear sizable stress alternation, and this is thermoelasticity hydrodynamic profit
Sliding mode.The hydraulic coupling of the control of programmable logic controller (PLC) 2 simultaneously, makes experiment bearing 8 reach the actual work of diesel engine main bearing
Loading condiction.Programmable logic controller (PLC) 2 control lubricating oil temperature and lubricating oil pressure, make into machine oil body, temperature,
Lubricating status are consistent in process of the test.Test bearing bearing shell is typically made up of wear-resisting babbit and steel back, alloy-layer
Separated by lubricating oil oil film between gearratio of cycloid axle formation, form liquid lubrication；Frame is brought into close contact into test bearing bearing shell
Potential body, connection is good and is grounded.As lubricating oil film occurs local failure, the lubricating status between eccentric shaft 22 and bearing shell become
Difference, produces therebetween and rubs and send substantial amounts of heat, causes eccentric shaft 22, lubricating oil film and the temperature of bearing bush to rise
It is high.The alloy-layer of bearing shell is typically made up of tinbase or lead-base babbitt, and it is different to be made material from steel crankshaft, under hot conditions
Thermo-electrically idol effect can be produced.Because the activity enthusiasm of bearing shell and bent axle metal electron is different from density, heat scrubbing contact is produced
When, activity enthusiasm can be moved to enthusiasm with density metal electron high with a low density side, lose the metal one of electronics
Square positively charged, the side for obtaining electronics is negatively charged, here it is tunnel-effect.Additionally, same metal is due to own temperature gradient
Difference can also produce thermoelectric force.The material of boss 24 is identical with the material of eccentric shaft 22, is drawn pyroelectric signal by boss 24,
Industrial computer 1 is sent to by data collecting card 4.
A kind of marine diesel using above-mentioned caliberating device slides base bearing pyroelectric signal scaling method, and it includes as follows
Step：
Step 1：Programmable logic controller (PLC) 2 rotates that (motor 5 is in servo-driver by the controlled motor 5 of servo-driver 3
3 control under slewing area be 0~3000rpm), motor 5 drives eccentric shaft 22 to rotate, the now middle part eccentric shaft of eccentric shaft 22
Gap between section 22.2 and experiment bearing 8 is normal clearance；
Step 2：Programmable logic controller (PLC) 2 controls hydraulic pump 18 and grease pump 20 to open, while FPGA control
Device processed 2 control lubricating oil heater 21 work, now, grease-box 19 forward spring bearing 6, rear support bearing 7 and experiment axle
8 offer lubricating oil are held, hydraulic cylinder 16 is acted, the piston rod of hydraulic cylinder 16 is eccentric to the middle part of eccentric shaft 22 at interval of Preset Time
Shaft part 22.2 increases specifies load, the rated load until reaching eccentric shaft 22；
Step 3：The piston rod of hydraulic cylinder 16 reaches the specified of eccentric shaft 22 to the load that middle part gearratio of cycloid axle formation 22.2 applies
During load, it is inclined that the experiment bearing pyroelectric signal of the collection output of thermoelectric pickup 11 of data collecting card 4, photoelectric encoder 10 are exported
Heart Shaft angle signal, the eccentric shaft tach signal of the output of speed probe 9, the experiment bearing of the output of lubricating oil temperature sensor 14
Lubricating oil temperature signal, experiment bearing oil pressure signal, watt back of the body temperature sensor of the output of lubricant pressure sensor 15
The eccentric bearing pad back of the body temperature signal of 13 outputs, the eccentric shaft torque signal of the output of torque sensor 12, hydrostatic sensor 27 are exported
Cylinder hydraulic signal, the experiment bearing displacement signal of the output of displacement signal sensor 28 (for being calculated laboratory axle
The oil film thickness for holding), and by the signal transmission of above-mentioned collection to industrial computer 1；
Step 4：Industrial computer 1 is by eccentric shaft tach signal, experiment bearing oil temperature signal, experiment bearing oil
Pressure signal and eccentric shaft torque signal enter to compare with default regulation control strategy respectively, defeated by programmed logic controller 2
Go out the control signal of closed loop, turn round eccentric rotating speed, experiment bearing lubrication oil temperature, experiment bearing lubrication oil pressure and eccentric shaft
Square stabilization is on preset value；
Industrial computer 1 is by angle of eccentricity signal analysis, recognizing each cycle initial time, and eccentric shaft turns one week are right
A cycle is answered, experiment bearing pyroelectric signal, experiment bearing displacement signal, cylinder hydraulic signal are pressed into periodic segment, obtained
Experiment bearing segmentation pyroelectric signal, experiment bearing displacement subsection signal, cylinder hydraulic block signal, then will test axle
Segmentation pyroelectric signal, experiment bearing displacement subsection signal, cylinder hydraulic block signal is held to do and averagely synthesize paracycle
The experiment bearing pyroelectric signal of a cycle, experiment bearing displacement signal and cylinder hydraulic signal；
Industrial computer 1 is by the experiment bearing displacement signal of a cycle using eccentric shaft 22 and displacement signal sensor 28
Geometrical relationship and euler algorithm be calculated minimum oil film between the middle part gearratio of cycloid axle formation 22.2 of eccentric shaft 22 and real axis watt
Thickness, and by minimum oil film thickness and the cylinder hydraulic signal write into Databasce of a cycle, as the auxiliary of eccentric shaft abrasion
Help monitoring parameter (, convenient to check if thermoelectricity calibration result has an exception (signal distortion))；Industrial computer 1 will test bearing one
The pyroelectric signal amplitude in individual cycle draws the pole of bearing wear pyroelectric signal as polar radius, angle of eccentricity as angular coordinate
Coordinate diagram, and the maximum of pyroelectric signal in polar diagram is extracted as pyroelectric signal characteristic；
Step 5：Increase the middle part gearratio of cycloid axle formation 22.2 and experiment bearing 8 of eccentric shaft 22 by manually adjusting step-by-step movement
Between gap (simulate different state of wear by adjusting bearing shell from the gap of eccentric shaft or by long-time fatigue test mould
Intend the abrasion that marine low speed diesel engine slides base bearing), until the gap reaches the middle part gearratio of cycloid axle formation of eccentric shaft 22
The maximal clearance that normal work is allowed between 22.2 and experiment bearing 8, then obtains often according to the method for step 3 and step 4
The corresponding pyroelectric signal characteristic in the individual gap, each gap is mapped with corresponding thermoelectricity characteristic value, is formed and demarcated
Collection of illustrative plates, that is, complete marine diesel and slide the demarcation of base bearing pyroelectric signal.
Gap in the step of above-mentioned technical proposal 1 between the middle part gearratio of cycloid axle formation 22.2 of eccentric shaft 22 and experiment bearing 8
It is 0.1mm.
In the step of above-mentioned technical proposal 2, the piston rod of hydraulic cylinder 16 is inclined at interval of 30 minutes middle parts to eccentric shaft 22
Heart shaft part 22.2 increases the load of 10MPa, the rated load until reaching eccentric shaft 22.
In the step of above-mentioned technical proposal 5, the gap between the middle part gearratio of cycloid axle formation 22.2 and experiment bearing 8 of eccentric shaft 22
Increase 0.05mm every time.
In above-mentioned technical proposal, the gap is reached between the middle part gearratio of cycloid axle formation 22.2 of eccentric shaft 22 and experiment bearing 8
The maximal clearance that normal work is allowed is 0.5mm.
It is illustrated in figure 2 the relation of thermo-electrically signal scaling collection of illustrative plates, reaction pyroelectric signal and wear extent.It is eccentric by changing
Axle 22 and the gap of bearing shell, simulate the state of experiment bearing 8 under different state of wear, because state of wear is different, frictional dissipation
Also different, thermoelectric force is different, and gathering pyroelectric signal, bearing bush temperature signal, minimum oil film thickness by measuring system believes, and by
Industrial computer extracts thermoelectricity characteristic value by processing, and forms the collection of illustrative plates of thermo-electrically-wear extent, reaches the purpose for demarcating pyroelectric signal.
In above-mentioned technical proposal, top dead centre signal, tach signal obtain to differentiate cycle starting by photoelectric encoder 10
Point, different cycles are divided into by signal, and 50 data in cycle of Program extraction are an analysis circulation；Protected using Hermite interpolation
Demonstrate,prove each cycle data amount and realize that data are angularly changed always；Using the cycle is average, fairing processing rejects distortion；Using low pass filtered
Ripple removes the High-frequency Interference in signal, is finally processed as 1440 × 7 arrays.The stability bandwidth of tach signal is calculated to weigh dress
Put the stability of operation；Pressure signal is analyzed to calculate eccentric shaft friction power loss；Minimum oil film thickness is obtained by displacement signal；
Minimum oil film thickness determines bearing lubrication state, and temperature rise signal determines wear conditions；Pyroelectric signal samples a cycle
Heat-the electric signal of sequence as polar radius, crank angle as the angle left side, it can be found that in the minimum angle pole of oil film thickness
Coordinate diagram has maximum, extracts this maximum as heat-signal characteristics value；Temperature rise signal as bearing wear reference
Amount.Pyroelectric signal characteristic value, state of wear, friction power loss, eccentric shaft and bush gap, temperature rise signal, tach signal write-in are right
The tables of data answered, test data is managed collectively by database, then after demarcating and terminating, reading database data genaration pyroelectric signal mark
Determine collection of illustrative plates.
The content that this specification is not described in detail belongs to prior art known to professional and technical personnel in the field.
Claims (9)
1. a kind of marine diesel slides base bearing pyroelectric signal caliberating device, it is characterised in that it include industrial computer (1),
Programmable logic controller (PLC) (2), servo-driver (3), data collecting card (4), motor (5), front support bearing (6), rear support
Bearing (7), experiment bearing (8), speed probe (9), thermoelectric pickup (11), torque sensor (12), watt back of the body TEMP
Device (13), lubricating oil temperature sensor (14), lubricant pressure sensor (15), hydraulic cylinder (16), hydraulic oil container (17), hydraulic pressure
Pump (18), grease-box (19), grease pump (20), lubricating oil heater (21), hydrostatic sensor (27) and displacement signal are passed
Sensor (28)；
Wherein, the signal input part of signal output part connection programmable logic controller (PLC) (2) of industrial computer (1), programmable to patrol
Collect the signal input part of servo drive control signal output part connection servo-driver (3) of controller (2), servo-driver
(3) control signal input of signal output part connection motor (5), the output shaft of motor (5) and the front end of eccentric shaft (22)
It is fixedly and coaxially connected, the outer ring of experiment bearing (8) is arranged on the top of the piston rod of hydraulic cylinder (16), the profit of experiment bearing (8)
Lubricating oil temperature sensor (14) and lubricant pressure sensor (15), the bearing shell inspection of experiment bearing (8) are provided with oil pathway
A watt back of the body temperature sensor (13), preceding coax segments of the torque sensor (12) installed in eccentric shaft (22) are installed on gaging hole
(22.1), the preceding coax segments (22.1) of eccentric shaft (22) are assemblied in the inner ring of front support bearing (6), the middle part of eccentric shaft (22)
Gearratio of cycloid axle formation (22.2) is assemblied in the inner ring of experiment bearing (8), and the rear coax segments (22.3) of eccentric shaft (22) are propped up after being assemblied in
In the inner ring of support bearing (7), the rear end of rear coax segments (22.3) is provided with gear (23), and gear is provided with for measuring on (23)
The speed probe (9) of gear (23) rotating speed, the axle center of gear (23) is fixedly connected the input shaft of thermoelectric pickup (11), thermoelectricity
The photoelectric encoder (10) carried inside sensor (11) detect so as to obtain for the input shaft to thermoelectric pickup (11)
To the angular signal of eccentric shaft (22)；
The input of the hydraulic pump (18) connects hydraulic oil container (17), and the output end of hydraulic pump (18) is by upper charge valve (25)
Hydraulic cylinder (16) cavity of upper piston area is connected, the output end of hydraulic pump (18) also connects piston lower portion by lower charge valve (26)
Hydraulic cylinder (16) cavity, hydrostatic sensor (27) is provided with hydraulic cylinder (16), experiment bearing (8) is provided with displacement signal sensing
Device (28)；
The input of grease pump (20) connects grease-box (19), the output end connection lubricating oil heater of grease pump (20)
(21) input, the output end of lubricating oil heater (21) is respectively connected to front support bearing (6), rear support bearing (7) and reality
Test the lubricating oil input port of bearing (8)；
The pyroelectric signal input of signal output part connection data collecting card (4) of the thermoelectric pickup (11), photoelectric coding
The angular signal input of signal output part connection data collecting card (4) of device (10), the signal output part of speed probe (9)
The tach signal input of connection data collecting card (4), the signal output part connection data of lubricating oil temperature sensor (14) are adopted
The lubricating oil temperature signal input part of truck (4), the signal output part connection data collecting card of lubricant pressure sensor (15)
(4) lubricating oil pressure signal input part, watt back of the body temperature sensor (13) signal output part connection data collecting card (4) watt
Back of the body temperature signal input, the torque signal input of signal output part connection data collecting card (4) of torque sensor (12),
The hydraulic pressure signal input of signal output part connection data collecting card (4) of hydrostatic sensor (27), displacement signal sensor
(28) the displacement signal input of signal output part connection data collecting card (4)；
The control signal input of hydraulic pump control signal output part connection hydraulic pump (18) of programmable logic controller (PLC) (2),
The control signal input of grease pump control signal output connection grease pump (20) of programmable logic controller (PLC) (2).
2. marine diesel according to claim 1 slides base bearing pyroelectric signal caliberating device, it is characterised in that：It is described
The outer face of gear (23) is fixedly connected with boss (24), and the boss (24) is provided with coupling band, coupling band and gear (23)
It is coaxially disposed, the input shaft of thermoelectric pickup (11) is fixedly connected coupling band, the lubricating oil temperature of programmable logic controller (PLC) (2)
The control signal input of control signal output connection lubricating oil heater (21).
3. marine diesel according to claim 1 slides base bearing pyroelectric signal caliberating device, it is characterised in that：It is described
The outer ring of front support bearing (6) and rear support bearing (7) is each attached on support.
4. marine diesel according to claim 1 slides base bearing pyroelectric signal caliberating device, it is characterised in that：It is described
The foil gauge of torque sensor (12) is attached to the preceding coax segments (22.1) of eccentric shaft (22).
5. a kind of marine diesel of caliberating device described in utilization claim 1 slides base bearing pyroelectric signal scaling method, its
It is characterised by, it comprises the following steps：
Step 1：Programmable logic controller (PLC) (2) is rotated by servo-driver (3) controlled motor (5), and motor (5) drives eccentric
Axle (22) is rotated, between now the gap between the middle part gearratio of cycloid axle formation (22.2) of eccentric shaft (22) and experiment bearing (8) is normal
Gap；
Step 2：Programmable logic controller (PLC) (2) controls hydraulic pump (18) and grease pump (20) to open, while FPGA
Controller (2) controls lubricating oil heater (21) work, now, grease-box (19) spring bearing (6), rear support bearing forward
(7) and experiment bearing (8) provide lubricating oil, hydraulic cylinder (16) action, the piston rod of hydraulic cylinder (16) is at interval of Preset Time pair
The middle part gearratio of cycloid axle formation (22.2) of eccentric shaft (22) increases specifies load, the rated load until reaching eccentric shaft (22)；
Step 3：The piston rod of hydraulic cylinder (16) reaches the volume of eccentric shaft (22) to the load that middle part gearratio of cycloid axle formation (22.2) applies
During constant load, data collecting card (4) gathers experiment bearing pyroelectric signal, the photoelectric encoder (10) of thermoelectric pickup (11) output
The angle of eccentricity signal of output, the eccentric shaft tach signal of speed probe (9) output, lubricating oil temperature sensor (14) are defeated
The experiment bearing oil temperature signal that goes out, the experiment bearing oil pressure signal of lubricant pressure sensor (15) output,
The eccentric bearing pad back of the body temperature signal of watt back of the body temperature sensor (13) output, the eccentric shaft moment of torsion letter of torque sensor (12) output
Number, hydrostatic sensor (27) output cylinder hydraulic signal, displacement signal sensor (28) output the displacement of experiment bearing letter
Number, and give industrial computer (1) by the signal transmission of above-mentioned collection；
Step 4：Industrial computer (1) is by eccentric shaft tach signal, experiment bearing oil temperature signal, experiment bearing lubrication oil pressure
Force signal and eccentric shaft torque signal enter to compare with default regulation control strategy respectively, defeated by programmed logic controller (2)
Go out the control signal of closed loop, turn round eccentric rotating speed, experiment bearing lubrication oil temperature, experiment bearing lubrication oil pressure and eccentric shaft
Square stabilization is on preset value；
Industrial computer (1) is by angle of eccentricity signal analysis, recognizing each cycle initial time, one week correspondence of eccentric shaft turns
A cycle, periodic segment is pressed by experiment bearing pyroelectric signal, experiment bearing displacement signal, cylinder hydraulic signal, obtains reality
Bearing segmentation pyroelectric signal, experiment bearing displacement subsection signal, cylinder hydraulic block signal are tested, bearing then will be tested
Segmentation pyroelectric signal, experiment bearing displacement subsection signal, cylinder hydraulic block signal do and averagely synthesize one paracycle
The experiment bearing pyroelectric signal in individual cycle, experiment bearing displacement signal and cylinder hydraulic signal；
Industrial computer (1) utilizes eccentric shaft (22) and displacement signal sensor by the experiment bearing displacement signal of a cycle
(28) geometrical relationship and euler algorithm is calculated the middle part gearratio of cycloid axle formation (22.2) of eccentric shaft (22) and between real axis watt
Minimum oil film thickness, and by minimum oil film thickness and the cylinder hydraulic signal write into Databasce of a cycle, as eccentric shaft
The auxiliary monitoring parameter of abrasion；Industrial computer (1) will test the pyroelectric signal amplitude of bearing a cycle as polar radius, eccentric
Shaft angle draws the polar diagram of bearing wear pyroelectric signal as angular coordinate, and extracts the pyroelectric signal in polar diagram
Maximum is used as pyroelectric signal characteristic；
Step 5：Step-by-step movement increases the gap between the middle part gearratio of cycloid axle formation (22.2) of eccentric shaft (22) and experiment bearing (8), one
Allowed until the gap reaches normal work between the middle part gearratio of cycloid axle formation (22.2) of eccentric shaft (22) and experiment bearing (8)
Maximal clearance, then obtain the corresponding pyroelectric signal characteristic in each described gap according to step 3 and the method for step 4, will
Each gap is mapped with corresponding thermoelectricity characteristic value, is formed and demarcates collection of illustrative plates, that is, complete marine diesel and slide base bearing heat
Electric signal is demarcated.
6. marine diesel according to claim 5 slides base bearing pyroelectric signal scaling method, it is characterised in that：It is described
Gap in step 1 between the middle part gearratio of cycloid axle formation (22.2) of eccentric shaft (22) and experiment bearing (8) is 0.1mm.
7. marine diesel according to claim 5 slides base bearing pyroelectric signal scaling method, it is characterised in that：It is described
In step 2, the piston rod of hydraulic cylinder (16) increased at interval of 30 minutes middle part gearratio of cycloid axle formation (22.2) to eccentric shaft (22)
The load of 10MPa, the rated load until reaching eccentric shaft (22).
8. marine diesel according to claim 5 slides base bearing pyroelectric signal scaling method, it is characterised in that：It is described
In step 5, the gap between the middle part gearratio of cycloid axle formation (22.2) of eccentric shaft (22) and experiment bearing (8) increases 0.05mm every time.
9. marine diesel according to claim 5 slides base bearing pyroelectric signal scaling method, it is characterised in that：It is described
Between gap reaches the maximum that normal work between the middle part gearratio of cycloid axle formation (22.2) of eccentric shaft (22) and experiment bearing (8) is allowed
Gap is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710085429.9A CN106840673B (en) | 2017-02-17 | 2017-02-17 | Marine diesel slides base bearing pyroelectric signal caliberating device and scaling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710085429.9A CN106840673B (en) | 2017-02-17 | 2017-02-17 | Marine diesel slides base bearing pyroelectric signal caliberating device and scaling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106840673A true CN106840673A (en) | 2017-06-13 |
| CN106840673B CN106840673B (en) | 2019-03-26 |
Family
ID=59127775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710085429.9A Active CN106840673B (en) | 2017-02-17 | 2017-02-17 | Marine diesel slides base bearing pyroelectric signal caliberating device and scaling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106840673B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225169A (en) * | 2017-12-21 | 2018-06-29 | 沪东中华造船(集团)有限公司 | A kind of large ship Propulsion Systems method for monitoring state |
| CN108844739A (en) * | 2018-04-08 | 2018-11-20 | 武汉理工大学 | The verification test platform and method of diesel engine sliding bearing abrasion thermo-electric method monitoring system |
| CN109144120A (en) * | 2017-06-15 | 2019-01-04 | 大族激光科技产业集团股份有限公司 | A kind of speed of mainshaft control method and device |
| CN109238726A (en) * | 2018-07-02 | 2019-01-18 | 岭东核电有限公司 | A kind of qualification test method of pressurized-water reactor nuclear power plant diesel engine bush |
| CN110207988A (en) * | 2019-06-10 | 2019-09-06 | 武汉理工大学 | Marine engine connecting rod liner wear simulation test device and test method |
| CN110243707A (en) * | 2019-04-19 | 2019-09-17 | 武汉理工大学 | Marine diesel engine piston pin fatigue wear experimental rig |
| CN110374960A (en) * | 2019-05-07 | 2019-10-25 | 哈尔滨工程大学 | A kind of Bearing Fatigue Testing Machine hydraulic control system of actuated by cams proportional pressure control valve |
| CN113776829A (en) * | 2021-08-27 | 2021-12-10 | 上海交通大学 | Sliding bearing friction torque wireless measurement device and method |
| CN116008349A (en) * | 2023-03-17 | 2023-04-25 | 天津仁爱学院 | Diesel engine cylinder liner structure damage detection mechanism |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010185680A (en) * | 2009-02-10 | 2010-08-26 | Ihi Corp | Axial load application apparatus |
| CN201773000U (en) * | 2010-05-21 | 2011-03-23 | 浙江八环轴承有限公司 | Bearing life reliability testing device |
| CN202002801U (en) * | 2011-02-01 | 2011-10-05 | 哈尔滨轴承集团公司 | Bearing life testing machine |
| CN102279105A (en) * | 2011-07-10 | 2011-12-14 | 太原科技大学 | Comprehensive test-bed for oil film bearing of rolling mill |
| CN102798527A (en) * | 2012-07-27 | 2012-11-28 | 河南科技大学 | Tester for detecting performance of oil-retaining bearing and radial loading mechanism thereof |
| CN104165768A (en) * | 2014-09-04 | 2014-11-26 | 大连理工大学 | Bearing integrated dynamic performance test device and method |
| RU2556304C1 (en) * | 2014-04-04 | 2015-07-10 | Федеральное государственное унитарное предприятие "Центральный институт авиационного моторостроения им. П.И. Баранова" | Stand for testing gas-dynamic bearings |
| CN105136457A (en) * | 2015-06-03 | 2015-12-09 | 重庆大学 | High/low-temperature controllable multi-specification rolling bearing test bench |
| JP2016023976A (en) * | 2014-07-17 | 2016-02-08 | 株式会社ジェイテクト | Bearing testing machine, and bearing testing method |
-
2017
- 2017-02-17 CN CN201710085429.9A patent/CN106840673B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010185680A (en) * | 2009-02-10 | 2010-08-26 | Ihi Corp | Axial load application apparatus |
| CN201773000U (en) * | 2010-05-21 | 2011-03-23 | 浙江八环轴承有限公司 | Bearing life reliability testing device |
| CN202002801U (en) * | 2011-02-01 | 2011-10-05 | 哈尔滨轴承集团公司 | Bearing life testing machine |
| CN102279105A (en) * | 2011-07-10 | 2011-12-14 | 太原科技大学 | Comprehensive test-bed for oil film bearing of rolling mill |
| CN102798527A (en) * | 2012-07-27 | 2012-11-28 | 河南科技大学 | Tester for detecting performance of oil-retaining bearing and radial loading mechanism thereof |
| RU2556304C1 (en) * | 2014-04-04 | 2015-07-10 | Федеральное государственное унитарное предприятие "Центральный институт авиационного моторостроения им. П.И. Баранова" | Stand for testing gas-dynamic bearings |
| JP2016023976A (en) * | 2014-07-17 | 2016-02-08 | 株式会社ジェイテクト | Bearing testing machine, and bearing testing method |
| CN104165768A (en) * | 2014-09-04 | 2014-11-26 | 大连理工大学 | Bearing integrated dynamic performance test device and method |
| CN105136457A (en) * | 2015-06-03 | 2015-12-09 | 重庆大学 | High/low-temperature controllable multi-specification rolling bearing test bench |
Non-Patent Citations (2)
| Title |
|---|
| 朱军 等: "监测柴油机主轴承磨损状态的热电法试验研究", 《内燃机工程》 * |
| 李晟 等: "热电耦合无线传感能量管理系统及其在精密主轴热监测中的应用", 《光学精密工程》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109144120A (en) * | 2017-06-15 | 2019-01-04 | 大族激光科技产业集团股份有限公司 | A kind of speed of mainshaft control method and device |
| CN108225169A (en) * | 2017-12-21 | 2018-06-29 | 沪东中华造船(集团)有限公司 | A kind of large ship Propulsion Systems method for monitoring state |
| CN108844739A (en) * | 2018-04-08 | 2018-11-20 | 武汉理工大学 | The verification test platform and method of diesel engine sliding bearing abrasion thermo-electric method monitoring system |
| CN109238726A (en) * | 2018-07-02 | 2019-01-18 | 岭东核电有限公司 | A kind of qualification test method of pressurized-water reactor nuclear power plant diesel engine bush |
| CN110243707A (en) * | 2019-04-19 | 2019-09-17 | 武汉理工大学 | Marine diesel engine piston pin fatigue wear experimental rig |
| CN110374960A (en) * | 2019-05-07 | 2019-10-25 | 哈尔滨工程大学 | A kind of Bearing Fatigue Testing Machine hydraulic control system of actuated by cams proportional pressure control valve |
| CN110207988A (en) * | 2019-06-10 | 2019-09-06 | 武汉理工大学 | Marine engine connecting rod liner wear simulation test device and test method |
| CN113776829A (en) * | 2021-08-27 | 2021-12-10 | 上海交通大学 | Sliding bearing friction torque wireless measurement device and method |
| CN116008349A (en) * | 2023-03-17 | 2023-04-25 | 天津仁爱学院 | Diesel engine cylinder liner structure damage detection mechanism |
| CN116008349B (en) * | 2023-03-17 | 2023-06-13 | 天津仁爱学院 | Diesel engine cylinder liner structure damage detection mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106840673B (en) | 2019-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106840673B (en) | Marine diesel slides base bearing pyroelectric signal caliberating device and scaling method | |
| CN107179195B (en) | The test platform of the fretting wear of Diesel Cylinder Piston ring and measuring lubricating oil film | |
| Etsion et al. | The effect of various surface treatments on piston pin scuffing resistance | |
| CN205593870U (en) | Experimental device for test engine piston ring - lubricated friction properties of cylinder liner | |
| Ryk et al. | Testing piston rings with partial laser surface texturing for friction reduction | |
| CN108266361B (en) | Multifunctional axial plunger pump test prototype and test system for research | |
| CN108844739B (en) | The verification test platform and method of diesel engine sliding bearing abrasion thermo-electric method monitoring system | |
| CN105136457A (en) | High/low-temperature controllable multi-specification rolling bearing test bench | |
| CN102840983B (en) | Device and method for monitoring abrasion of sliding main bearing of marine diesel engine | |
| CN109357960A (en) | The military service testing method of endurance performance and experimental rig of hydraulic reciprocating sealing element | |
| CN103245582B (en) | A kind of ring block friction wear testing machine of speed intelligent control | |
| CN103674747A (en) | Engine bearing bush abrasion test table | |
| CN109238714B (en) | High-speed heavy-load crankshaft-sliding bearing system dynamic test bed | |
| CN111272424B (en) | Water-lubricated bearing on-line monitoring test platform and bearing characteristic test analysis method | |
| CN105181205A (en) | High-pressure high-speed axial piston pump piston pair four-axis force testing device | |
| Wen et al. | Online measurement of piston-assembly friction with wireless IMEP method under fired conditions and comparison with numerical analysis | |
| Li et al. | A new coupling tribodynamic model of crosshead slipper-guide system and piston skirt-liner system of low-speed marine diesel engines | |
| CN113343482A (en) | Vehicle power system monitoring and management method based on digital twins | |
| Li et al. | Measurement of the friction force of sliding friction pairs in low-speed marine diesel engines and comparison with numerical simulation | |
| CN102607835B (en) | Film lubrication and heat transfer testing system for high-speed friction pair | |
| Becker et al. | Friction and wear investigations on single chain joints | |
| CN110243707A (en) | Marine diesel engine piston pin fatigue wear experimental rig | |
| CN108036944A (en) | Conveyer belt loads the rolling bearing fatigue life pilot system of radially alternating load | |
| Abed et al. | Study of the motion of floating piston pin against pin bore | |
| Zhu et al. | Thermoelectric effect of wear of alloy bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |