CN102589878A - Portable type wet type clutch detection data collecting system and fault diagnosis method - Google Patents
Portable type wet type clutch detection data collecting system and fault diagnosis method Download PDFInfo
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- CN102589878A CN102589878A CN2012100621898A CN201210062189A CN102589878A CN 102589878 A CN102589878 A CN 102589878A CN 2012100621898 A CN2012100621898 A CN 2012100621898A CN 201210062189 A CN201210062189 A CN 201210062189A CN 102589878 A CN102589878 A CN 102589878A
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Abstract
The invention relates to a portable type wet type clutch detecting data collecting system and a fault diagnosis method. The fault diagnosis method comprises the following steps of: 1) arranging a detecting data collecting system comprising electromagnetic rotating speed transducers, current type pressure sensors, a data collection instrument, a handheld type terminal and a speed changing box containing a plurality of wet type clutches and a plurality of transmission shaft speed detecting gears; 2) connecting the electromagnetic rotating speed transducer, the current type pressure sensor, wet type clutches, the data collection instrument and the handheld type terminal; 3) starting a vehicle to be operated at a neutral position and starting the handheld type terminal and the data collection instrument; 4) observing a signal receiving state through the handheld type terminal; 5) carrying out fault diagnosis on data at each detected point of all the electromagnetic rotating speed transducers and the current type pressure sensors; 6) after finishing the detection at a certain gear position, replacing the gear position of the speed changing box to repeatedly detect; and 7) after finishing signal collection and fault diagnosis of all the gear positions, outputting collected data and diagnosed results through a result output module in the handheld type terminal. The portable type wet type clutch detecting data collecting system and the fault diagnosis method, disclosed by the invention, can be widely applied to wet type clutches of various belt vehicle speed changing boxes.
Description
Technical field
The present invention relates to a kind of data acquisition system (DAS) and method for diagnosing faults, particularly about a kind of portable detection data acquisition system (DAS) and method for diagnosing faults that is used for endless-track vehicle wheel box wet clutch.
Background technology
At present; The wet clutch fixed axle gearbox is used widely on numerous endless-track vehicles and engineering machinery; This wheel box is the organic synthesis of technology such as mechanical, electrical, liquid, has that hydrodynamic drive, hydraulic stepless turn to, its telotisms of technical characterstic such as power shift and fluid drive, technical merit are advanced.Quick raising along with the wheel box performance and the level of IT application; Failure rate also strengthens thereupon; How wheel box is carried out effective status monitoring and fault diagnosis, control its running status, guarantee riding quality; And can when breaking down sign, in time safeguard and keep in repair, these problems day by day obtain producer and user's great attention.Facts have proved; Giving prominence to also most important in the wheel box fault diagnosis the most is exactly how these most common failure parts of wet type gear shift sleeve to be carried out the real vehicle monitoring; The solution of this problem has material impact to performance, life-span, the reliability of wheel box and even car load; Therefore, wet clutch state-detection data acquisition system (DAS) and to study method for diagnosing faults significant in research and development endless-track vehicle, the construction machinery gear box.
At present; Mainly there is following problem in existing endless-track vehicle wheel box fault diagnosis system: 1, Signal Spacing module, signal condition module and signal acquisition module are separate in the data acquisition system (DAS); Unified integrated microcircuit design is unrealized; Cause acquisition system to form, be unfavorable for the requirement of real vehicle test testing tool portability and convenience by signal process box and data acquisition device two parts.Adopt the flexible high pressure oil pipe that wheel box hydraulic oil is transferred into the pressure measurement valve plate when 2, hydraulic pressure signal is gathered; Setting pressure sensor pressure measurement on the pressure measurement valve plate; Though said apparatus has played the pressure buffer effect; Protected sensor, but the length issue of hydraulic oil pipe dynamic pressure waveform test distortion, fault diagnosis difficult judgment have been caused.Though 3 have adopted independent lithium battery case power supply, have guaranteed the collecting sensor signal quality, the lithium battery casing is long-pending bigger than normal, does not accomplish the integrated of battery and acquisition instrument, and difficulty is put and fixed to battery case when causing the real vehicle test.4, it is too many that sensor is installed quantity, causes the set-up time long, execute-in-place difficulty and time-consuming.Though 5, data acquisition system (DAS) adopts PXI cabinet and high-speed a/d modular converter, guaranteed the real-time of signals collecting, whole cabinet volume is bigger than normal, does not meet vehicle carried data collecting system to portable with microminiaturized requirement.6, fault diagnosis just judges that based on individual signals boundary value size diagnostic result is simple, be unrealized truly localization of fault and failure prediction.7, excessively pursue fault diagnosis system complete function and powerful, cause diagnostic result inaccurate.
Summary of the invention
To the problems referred to above, the purpose of this invention is to provide a kind of portable wet clutch easy to carry, simple to operate, that the scope of application extensive and the ability online in real time detects and detect data acquisition system (DAS) and method for diagnosing faults.
For realizing above-mentioned purpose; The present invention takes following technical scheme: a kind of portable wet clutch detects the data fault diagnostic method; It may further comprise the steps: 1) be provided with one and detect data acquisition system (DAS); It comprises magnetoelectric tachometric transducer, current type pressure transducer, data collecting instrument, handheld terminal and contains several wet clutches and the wheel box of several transmission shaft measure speed gearses; Wherein, be provided with data reception module, fault diagnosis module, display module, output module, data memory module and power supply as a result in the handheld terminal; 2) magnetoelectric tachometric transducer and current type pressure transducer are connected through wet clutch in cable and the wheel box, and connect data collecting instrument and handheld terminal; When 3) starting the operation of vehicle neutral gear, start handheld terminal and data collecting instrument; 4) observe receiving state signal through display module in the handheld terminal, if all signals are normal, then carry out gear-change operation, the gear shift cycling to gear in the vehicle ' process is tested; 5) each magnetoelectric tachometric transducer is given data collecting instrument with each current type pressure transducer with each measured point data delivery; And transfer in the fault diagnosis module of handheld terminal and carry out fault diagnosis; If diagnostic result is normal, then by data memory module storage of collected data; If diagnostic result shows a certain wet clutch fault, then show failure message in real time by display module, accomplish failure message storage and acquisition data storage; 6) after a certain gear of completion detects, change the wheel box gear, repeating said steps 5), until signals collecting and the fault diagnosis accomplished under all gears; 7) accomplish signals collecting and fault diagnosis under all gears after, by in the handheld terminal as a result output module with image data and fault diagnosis result output.
In the said step 5); Method for diagnosing faults in the said fault diagnosis module may further comprise the steps: (1) is according to the wet clutch operating oil pressure calculated signals oleo cushion time that receives; And the predefined technical indicator of foundation judges whether the surge time of oil pressure in the wet clutch cohesive process is long or too short; If long or too short, then the number of times of bulk registration appearance carries out next step; Otherwise whether the continuation gear shift detects surge time long or too short; (2) judge whether surge time long or too short number of times reaches the fault setting value with the ratio of total shift number, if reach, then points out this wet clutch fault, otherwise whether continuing gear shift, to detect surge time long or too short; (3) synchronous with said step (1); Whether detect the gear fault according to the operating oil pressure signal of wet clutch and the tach signal of transmission shaft measure speed gears: it is normal (i) to detect wet clutch operating oil pressure signal pressure; If normal, then confirm as gear when front gear box according to the wet clutch that is in bonding state, this gear is current hydraulic pressure gear; And current hydraulic pressure gear displayed value is stored as hydraulic pressure gear last time, continue gear shift and detect; Otherwise, the prompting pressure fault; (ii) the tach signal according to the transmission shaft measure speed gears calculates ratio of gear, judges whether this ratio of gear equals the gear ratio value of certain gear, if equal, then shows current mechanical gear, and this mechanical-type unit displayed value is stored as machinery gear last time, continues gear shift and detects; Otherwise, prompting ratio of gear fault; (iii) said step (i) and step hydraulic pressure gear last time in is (ii) judged it is that all gear is consistent with machinery gear contrast last time,, then continue gear shift and detect if consistent, otherwise, the gear fault pointed out; (4) whether the operating oil pressure signal pressure of continuation gear shift detection wet clutch two tach signal ratios whether normal, that calculate in the transmission shaft testing gears sensor are equaling the ratio of gear of certain gear; And detect the gear fault: (i) if pressure is normal; Then show current hydraulic pressure gear; And hydraulic pressure gear contrast last time in (i) of this hydraulic pressure gear and step (3) judged whether trip stop, and there is not a trip stop if gear is consistent, then continue the gear shift detection; Otherwise, prompting gear fault; (ii), then show current mechanical gear, and should the machinery gear judge whether trip stop not have a trip stop, then continue the gear shift detection if gear is consistent with machinery gear contrast last time of step (3) in (ii) if ratio of gear equals the ratio of gear of a certain gear; Otherwise, prompting gear fault; (5) current hydraulic pressure gear in the said step (4) and current mechanical gear are compared, judge whether gear is consistent,, then continue gear shift and detect if consistent, otherwise, current gear fault pointed out.
A kind of portable wet clutch of above-mentioned detection data fault diagnostic method of realizing detects data acquisition system (DAS); It is characterized in that: it comprises fixed axle gearbox, magnetoelectric tachometric transducer, current type pressure transducer, data collecting instrument and handheld terminal, is provided with signal condition module, A/D conversion module and data transmission blocks in the said data collecting instrument; Said wheel box contains several wet clutches and several transmission shaft measure speed gearses; Each said wet clutch all connects said magnetoelectric tachometric transducer through X-over, and each said transmission shaft measure speed gears also all connects said current type pressure transducer through X-over; The tach signal of said transmission shaft measure speed gears is sent in the said data collecting instrument after by said magnetoelectric tachometric transducer collection; The operating oil pressure signal of said wet clutch is sent in the said data collecting instrument after by the collection of said current type pressure transducer; Signal condition module in the said data collecting instrument is with tach signal that receives and operating oil pressure signal condition and after removing undesired signal; Send into the internal conversion of said A/D conversion module and become digital signal; And be sent to said handheld terminal by said data transmission blocks, accomplish the collection that wet clutch is detected data.
Said handheld terminal comprises data reception module, fault diagnosis module, output module, display module, data memory module and power supply as a result, and said power supply is each parts and magnetoelectric tachometric transducer, current type pressure transducer and data collecting instrument power supply in the said handheld terminal; Said data reception module receives the data of data transmission blocks transmission in the said data collecting instrument; And data are sent in the said fault diagnosis module; Diagnostic result is sent to respectively in said output module as a result, display module and the data memory module; Said output module is as a result exported diagnostic result, and said display module demonstrates diagnostic result.
Said power supply adopts lithium ion battery, said lithium ion battery and the integrated encapsulation of said handheld terminal.
Data transfer mode between data reception module employing CAN bus transmission model in data transmission blocks and the said handheld terminal in the said data collecting instrument.
Data transfer mode between data reception module employing wireless transmission method in data transmission blocks and the said handheld terminal in the said data collecting instrument.
Signal condition module in the said data collecting instrument comprises BPF., presses modular converter, two voltage isolation modules, low-pass filter and signal conversion module frequently; The tach signal that said magnetoelectric tachometric transducer collects is imported said frequency through said BPF. and is pressed in the modular converter, frequency signal is converted to accomplish to isolate with anti-interference back in the said voltage isolation module of input behind the voltage signal export; The operating oil pressure signal that said current type pressure transducer collects converts current signal to and isolates back output behind the voltage signal in another said voltage isolation module of input in said low-pass filter is imported said signal conversion module.
The present invention is owing to take above technical scheme; It has the following advantages: 1, the present invention is owing to adopt data collecting instrument to carry out data acquisition; This data collecting instrument is made up of signal condition module, A/D conversion module and data outputting module, has accomplished function unifications such as signal condition, Signal Spacing, analog to digital conversion and data transmission are integrated, and has realized the integrated and microminiaturized of circuit design; Dwindle the volume of data acquisition system (DAS), guaranteed the portability of system.2, the present invention is because the battery in the handheld terminal adopts lithium ion battery; This lithium ion battery and the integrated encapsulation of hand-held display terminal; So promptly guaranteed to adopt stable lithium power supply to supply power separately; Reduce the interference that acquired signal receives, improved the integration of total system again, the convenience when having improved the real vehicle operation.3, the present invention adopts X-over directly the current type pressure transducer to be connected with wheel box; The high-pressure oil pipe and the pressure measurement valve plate of available technology adopting have been cancelled; So promptly guaranteed the real-time that dynamic pressure signal is gathered; Reduce the formation of data acquisition system (DAS) again, further improved the portability of system.4, the signal of the present invention's detection includes only the tach signal of wet clutch operating oil pressure signal and transmission shaft measure speed gears; The test signal negligible amounts; So promptly shorten the time that the preceding system of real vehicle test installs, reduced workload, practiced thrift equipment cost again; Simplified system's formation, it is portable to have improved system.5, the data of data acquisition system (DAS) collection are utilized the CAN bus transmission model among the present invention, have promptly guaranteed the real-time of signal transmission, have realized the requirement of remote data transmission again.6, the present invention can also adopt wireless transmission method to carry out data transmission because data acquisition system (DAS) promptly can adopt the CAN bus transmission model to carry out data transmission, the convenience of operation when having improved the real vehicle test greatly.7, the present invention carries out fault detect because the fault diagnosis module that adopts is based on gearbox gear-shift historical process data, and the fault detect object is a wet clutch, so fault judgement is more accurate.8, the present invention can show diagnostic result, failure message and trouble location in real time owing to be provided with display module in the handheld terminal, diagnostic procedure is quick, the diagnostic result intuitive display, understandable, system operation is easy.The present invention can extensively use in various endless-track vehicle wheel box wet clutches.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present invention;
Fig. 2 is a handheld terminal structural representation of the present invention;
Fig. 3 is a signal condition modular structure synoptic diagram in the data collecting instrument of the present invention;
Fig. 4 is system works flow process figure of the present invention;
Fig. 5 is a Troubleshooting Flowchart of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is carried out detailed description.
As shown in Figure 1; Portable wet clutch of the present invention detects data acquisition system (DAS) and comprises fixed axle gearbox 1, magnetoelectric tachometric transducer 2, current type pressure transducer 3, data collecting instrument 4 and handheld terminal 5, is provided with signal condition module 6, A/D conversion module 7 and data transmission blocks 8 in the data collecting instrument 4.Wherein, Wheel box 1 contains several wet clutches 9 and several transmission shaft measure speed gearses 10; Each wet clutch 9 all connects magnetoelectric tachometric transducer 2 through X-over; Each transmission shaft measure speed gears 10 also all connects current type pressure transducer 3 through X-over, is example with wheel box 1 an interior wet clutch 9 and a transmission shaft measure speed gears 10 below.
The tach signal of wheel box 1 intermediate solid drive shaft measure speed gears 10 is sent in the data collecting instrument 4 after gathering by magnetoelectric tachometric transducer 2; The operating oil pressure signal of each wet clutch 9 is sent in the data collecting instrument 4 after gathering by current type pressure transducer 3 in the wheel box 1.Signal condition module 6 in the data collecting instrument 4 is with tach signal that receives and operating oil pressure signal condition and after removing undesired signal; Send into 7 internal conversions of A/D conversion module and become digital signal; And be sent to handheld terminal 5 by data transmission blocks 8, accomplish the collection that wet clutch is detected data.
Like Fig. 1, shown in Figure 2; Handheld terminal 5 of the present invention comprises data reception module 51, fault diagnosis module 52, output module 53, display module 54, data memory module 55 and power supply 56 as a result; Power supply 56 is each parts power supply in the handheld terminal 5, is magnetoelectric tachometric transducer 2, current type pressure transducer 3 and data collecting instrument 4 power supplies simultaneously.Data reception module 51 receives the data of data transmission blocks 8 transmission; And data are sent to diagnosis in the fault diagnosis module 52; Diagnostic result is sent to respectively as a result in output module 53, display module 54 and the data memory module 55; By output module 53 as a result with diagnostic result with file or report form output, and demonstrate diagnostic result, so that when breaking down, remind the user by display module 54.
In the foregoing description, power supply 55 can adopt lithium ion battery, this lithium ion battery and handheld terminal 5 integrated encapsulation.
Among above-mentioned each embodiment, the data transfer mode between data transmission blocks 8 and the data reception module 51 can adopt the CAN bus transmission model, also can adopt wireless transmission method.When adopting the CAN bus transmission model, the CAN bus adopts twin-channel USBCAN-II form, a channel transfer tach signal, and another one channel transfer pressure signal can guarantee data transmission capacity and transfer rate like this.CAN bus communication cable length adopts step-by-step design, and real vehicle can increase length as required flexibly or shorten length when using.
Among above-mentioned each embodiment, the WV of magnetoelectric tachometric transducer 2 and current type pressure transducer 3 all is direct current 24V.Portable wet clutch of the present invention detects the employing of the stube cable line between each parts double layer screen high-temperature cable in the data acquisition system (DAS), and cable sheath adopts the silica gel protection, and maximum operating temperature can reach 180 degree, and is promptly high temperature resistant, can also prevent fires.
Among above-mentioned each embodiment, as shown in Figure 3, the signal condition modules 6 in the data collecting instrument 4 comprise BPF. 61, press modular converter 62 frequently, two voltage isolation modules 63, low-pass filter 64 and signal conversion module 65.The tach signal that magnetoelectric tachometric transducer 2 collects is pressed in the modular converter 62 through BPF. 61 input frequently, frequency signal is converted to accomplish to isolate with anti-interference back in the input voltage isolation module 63 behind the voltage signal export; The operating oil pressure signal that current type pressure transducer 3 collects converts current signal behind the voltage signal to and to isolate back output in another voltage isolation module 63 of input in low-pass filter 64 input signal modular converters 65.
As shown in Figure 4; Portable wet clutch method for diagnosing faults of the present invention is to detect on the basis of data acquisition system (DAS) at portable wet clutch; Based on endless-track vehicle wheel box practical structures characteristics and wet clutch working pressure index; Realization is to the online detection and the fault diagnosis of wheel box wet clutch, and its concrete steps are following:
1) magnetoelectric tachometric transducer 2 is connected with wheel box 1 interior wet clutch 9 through cable with current type pressure transducer 3, and connects data collecting instrument 4 and handheld terminal 5;
When 2) starting the operation of vehicle neutral gear, start handheld terminal 5 and data collecting instrument 4;
3) observe receiving state signal through the display module in the handheld terminal 5 54, if all signals are normal, then carry out gear-change operation, the gear shift cycling to gear in the vehicle ' process is tested;
4) each magnetoelectric tachometric transducer 2 is given data collecting instrument 4 with each current type pressure transducer 3 with each measured point data delivery; After signal condition module 6 and A/D conversion module 7 transform; In the fault diagnosis module 52 of wireless transmission method or CAN bus transmission model entering handheld terminal 5, carry out fault diagnosis; If diagnostic result is normal, then by data memory module 55 storage of collected data; If diagnostic result shows a certain wet clutch 9 faults, then show failure message in real time by display module 54, accomplish failure message storage and acquisition data storage;
5) after a certain gear of completion detects; Handheld terminal 5 will point out this gear signal collection storage to accomplish, whether will proceed signals collecting, change wheel box 1 gear this moment; Repeating step 3), 4), until signals collecting and the fault diagnosis accomplished under all gears;
6) accomplish signals collecting and fault diagnosis under all gears after, handheld terminal 5 will be based on image data and fault diagnosis record, generates these fault diagnosis report by output module 53 as a result, and can the printout result.
As shown in Figure 5, above-mentioned steps 4) method for diagnosing faults in the fault diagnosis module 52 in may further comprise the steps:
(1) according to the 9 operating oil pressure calculated signals oleo cushion time of wet clutch that receive; And the predefined technical indicator of foundation judges whether the surge time of oil pressure in wet clutch 9 cohesive process is long or too short; If it is long or too short; Then the number of times of bulk registration appearance carries out step (2); If surge time does not have longly do not have too shortly yet, then proceed gear shift and detect, judge whether surge time is long or too short.
(2) judge whether surge time long or too short number of times reaches the fault setting value with the ratio of total shift number; If reach; Then point out this wet clutch 9 faults,, then do not point out this clutch coupling failure message if do not reach the fault setting value; Then proceed gear shift and detect, judge whether surge time is long or too short.
(3) synchronous with step (1), detect the gear fault according to the operating oil pressure signal of wet clutch 9 and the tach signal of wheel box 1 intermediate solid drive shaft measure speed gears 10:
(i) whether normal based on this operating oil pressure signal pressure of wet clutch 9 operating oil pressure input that receives; If pressure is normal, then confirm as gear when front gear box 1 based on the wet clutch 9 that is in bonding state, this gear is current hydraulic pressure gear; And show current hydraulic pressure gear; Current hydraulic pressure gear show value is stored as hydraulic pressure gear last time, continues gear shift and detect, and carry out step (iii); If pressure is undesired, then point out pressure fault.
(ii) the tach signal according to transmission shaft measure speed gears 10 calculates ratio of gear, judges whether this ratio of gear equals the gear ratio value of certain gear, if equal; Then show current mechanical gear; And this mechanical-type unit displayed value is stored as last time machinery gear, continue gear shift and detect, and carry out step (iii); Otherwise, prompting ratio of gear fault.
(iii) above-mentioned steps (i) and step hydraulic pressure gear last time in is (ii) judged it is that all gear is consistent with machinery gear contrast last time, if consistent, then continue gear shift and detect and carry out step (4), otherwise, the gear fault pointed out.
(4) whether the operating oil pressure signal pressure of continuation gear shift detection wet clutch 9 two tach signal ratios whether normal, that calculate in the transmission shaft testing gears sensor 2 are equaling the ratio of gear of certain gear, and judge detection gear fault:
(i) if pressure is normal, then show current hydraulic pressure gear, and hydraulic pressure gear contrast last time in (i) of this hydraulic pressure gear and step (3) is judged whether trip stop do not have a trip stop, then continue the gear shift detection and carry out step (5) if gear is consistent; Otherwise, prompting gear fault.
(ii), then show current mechanical gear, and should the machinery gear judge whether trip stop do not have a trip stop, then continue the gear shift detection and carry out step (5) if gear is consistent with machinery gear contrast last time of step (3) in (ii) if ratio of gear equals the ratio of gear of a certain gear; Otherwise, prompting gear fault.
(5) current hydraulic pressure gear in the step (4) and current mechanical gear are compared, judge whether gear is consistent,, then continue gear shift and detect if consistent, otherwise, current gear fault pointed out.
In above-mentioned each step, the operating oil pressure signal testing quantity of wet clutch 9 is difference with the difference of wheel box 1 model, only calculates the 9 oleo cushion times of wet clutch with pooling feature in the test.The tach signal of transmission shaft measure speed gears 10 is gathered quantity equally by how many decisions of wheel box 1 transmission shaft, and requires that every transmission shaft all must test rotating speed size from the input shaft to the output shaft.
Above-mentioned each embodiment only is used to explain the present invention; The structure of each parts and connected mode all can change to some extent; On the basis of technical scheme of the present invention; All improvement and equivalents of the connection and the structure of individual component being carried out according to the principle of the invention all should not got rid of outside protection scope of the present invention.
Claims (8)
1. a portable wet clutch detects the data fault diagnostic method, and it may further comprise the steps:
1) is provided with one and detects data acquisition system (DAS); It comprises magnetoelectric tachometric transducer, current type pressure transducer, data collecting instrument, handheld terminal and contains several wet clutches and the wheel box of several transmission shaft measure speed gearses; Wherein, be provided with data reception module, fault diagnosis module, display module, output module, data memory module and power supply as a result in the handheld terminal;
2) magnetoelectric tachometric transducer and current type pressure transducer are connected through wet clutch in cable and the wheel box, and connect data collecting instrument and handheld terminal;
When 3) starting the operation of vehicle neutral gear, start handheld terminal and data collecting instrument;
4) observe receiving state signal through display module in the handheld terminal, if all signals are normal, then carry out gear-change operation, the gear shift cycling to gear in the vehicle ' process is tested;
5) each magnetoelectric tachometric transducer is given data collecting instrument with each current type pressure transducer with each measured point data delivery; And transfer in the fault diagnosis module of handheld terminal and carry out fault diagnosis; If diagnostic result is normal, then by data memory module storage of collected data; If diagnostic result shows a certain wet clutch fault, then show failure message in real time by display module, accomplish failure message storage and acquisition data storage;
6) after a certain gear of completion detects, change the wheel box gear, repeating said steps 5), until signals collecting and the fault diagnosis accomplished under all gears;
7) accomplish signals collecting and fault diagnosis under all gears after, by in the handheld terminal as a result output module with image data and fault diagnosis result output.
2. a kind of portable wet clutch as claimed in claim 1 detects the data fault diagnostic method, it is characterized in that: in the said step 5), the method for diagnosing faults in the said fault diagnosis module may further comprise the steps:
(1) according to the wet clutch operating oil pressure calculated signals oleo cushion time that receives; And the predefined technical indicator of foundation judges whether the surge time of oil pressure in the wet clutch cohesive process is long or too short; If long or too short, then the number of times of bulk registration appearance carries out next step; Otherwise whether the continuation gear shift detects surge time long or too short;
(2) judge whether surge time long or too short number of times reaches the fault setting value with the ratio of total shift number, if reach, then points out this wet clutch fault, otherwise whether continuing gear shift, to detect surge time long or too short;
(3) synchronous with said step (1), detect the gear fault according to the operating oil pressure signal of wet clutch and the tach signal of transmission shaft measure speed gears:
(i) whether detection wet clutch operating oil pressure signal pressure is normal; If normal, then confirm as gear when front gear box according to the wet clutch that is in bonding state, this gear is current hydraulic pressure gear; And current hydraulic pressure gear displayed value is stored as hydraulic pressure gear last time, continue gear shift and detect; Otherwise, the prompting pressure fault;
(ii) the tach signal according to the transmission shaft measure speed gears calculates ratio of gear, judges whether this ratio of gear equals the gear ratio value of certain gear, if equal, then shows current mechanical gear, and this mechanical-type unit displayed value is stored as machinery gear last time, continues gear shift and detects; Otherwise, prompting ratio of gear fault;
(iii) said step (i) and step hydraulic pressure gear last time in is (ii) judged it is that all gear is consistent with machinery gear contrast last time,, then continue gear shift and detect if consistent, otherwise, the gear fault pointed out;
(4) whether the operating oil pressure signal pressure of continuation gear shift detection wet clutch two tach signal ratios whether normal, that calculate in the transmission shaft testing gears sensor are equaling the ratio of gear of certain gear, and detect the gear fault:
(i) if pressure is normal, then show current hydraulic pressure gear, and hydraulic pressure gear contrast last time in (i) of this hydraulic pressure gear and step (3) is judged whether trip stop not have a trip stop, then continue the gear shift detection if gear is consistent; Otherwise, prompting gear fault;
(ii), then show current mechanical gear, and should the machinery gear judge whether trip stop not have a trip stop, then continue the gear shift detection if gear is consistent with machinery gear contrast last time of step (3) in (ii) if ratio of gear equals the ratio of gear of a certain gear; Otherwise, prompting gear fault;
(5) current hydraulic pressure gear in the said step (4) and current mechanical gear are compared, judge whether gear is consistent,, then continue gear shift and detect if consistent, otherwise, current gear fault pointed out.
3. a realization portable wet clutch that detects the data fault diagnostic method according to claim 1 or claim 2 detects data acquisition system (DAS); It is characterized in that: it comprises fixed axle gearbox, magnetoelectric tachometric transducer, current type pressure transducer, data collecting instrument and handheld terminal, is provided with signal condition module, A/D conversion module and data transmission blocks in the said data collecting instrument; Said wheel box contains several wet clutches and several transmission shaft measure speed gearses; Each said wet clutch all connects said magnetoelectric tachometric transducer through X-over, and each said transmission shaft measure speed gears also all connects said current type pressure transducer through X-over;
The tach signal of said transmission shaft measure speed gears is sent in the said data collecting instrument after by said magnetoelectric tachometric transducer collection; The operating oil pressure signal of said wet clutch is sent in the said data collecting instrument after by the collection of said current type pressure transducer; Signal condition module in the said data collecting instrument is with tach signal that receives and operating oil pressure signal condition and after removing undesired signal; Send into the internal conversion of said A/D conversion module and become digital signal; And be sent to said handheld terminal by said data transmission blocks, accomplish the collection that wet clutch is detected data.
4. a kind of portable wet clutch as claimed in claim 3 detects data acquisition system (DAS); It is characterized in that: said handheld terminal comprises data reception module, fault diagnosis module, output module, display module, data memory module and power supply as a result, and said power supply is each parts and magnetoelectric tachometric transducer, current type pressure transducer and data collecting instrument power supply in the said handheld terminal; Said data reception module receives the data of data transmission blocks transmission in the said data collecting instrument; And data are sent in the said fault diagnosis module; Diagnostic result is sent to respectively in said output module as a result, display module and the data memory module; Said output module is as a result exported diagnostic result, and said display module demonstrates diagnostic result.
5. a kind of portable wet clutch as claimed in claim 4 detects data acquisition system (DAS), and it is characterized in that: said power supply adopts lithium ion battery, said lithium ion battery and the integrated encapsulation of said handheld terminal.
6. a kind of portable wet clutch as claimed in claim 4 detects data acquisition system (DAS), it is characterized in that: the employing of the data transfer mode between data reception module CAN bus transmission model in data transmission blocks and the said handheld terminal in the said data collecting instrument.
7. a kind of portable wet clutch as claimed in claim 4 detects data acquisition system (DAS), it is characterized in that: the employing of the data transfer mode between data reception module wireless transmission method in data transmission blocks and the said handheld terminal in the said data collecting instrument.
8. detect data acquisition system (DAS) like claim 3 or 4 or 5 or 6 or 7 described a kind of portable wet clutches, it is characterized in that: the signal condition module in the said data collecting instrument comprises BPF., presses modular converter, two voltage isolation modules, low-pass filter and signal conversion module frequently; The tach signal that said magnetoelectric tachometric transducer collects is imported said frequency through said BPF. and is pressed in the modular converter, frequency signal is converted to accomplish to isolate with anti-interference back in the said voltage isolation module of input behind the voltage signal export; The operating oil pressure signal that said current type pressure transducer collects converts current signal to and isolates back output behind the voltage signal in another said voltage isolation module of input in said low-pass filter is imported said signal conversion module.
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| CN103175621A (en) * | 2013-02-02 | 2013-06-26 | 中北大学 | System and method for measuring gun barrel surface temperature in moving state |
| CN104162749A (en) * | 2013-05-17 | 2014-11-26 | 宝山钢铁股份有限公司 | State diagnosis method of multi-slippery bell high-speed ball thread screw rod and device for same |
| CN110174867A (en) * | 2019-06-14 | 2019-08-27 | 广州小鹏汽车科技有限公司 | A kind of power supply gear control system and method based on CANoe |
| CN110398684A (en) * | 2019-07-10 | 2019-11-01 | 北京汽车股份有限公司 | Method for diagnosing faults, system and the automobile of automatic clutch switch |
| CN113505900A (en) * | 2021-07-11 | 2021-10-15 | 中国国家铁路集团有限公司 | Motor train unit auxiliary converter module digital maintenance platform and method |
| CN115107824A (en) * | 2022-07-26 | 2022-09-27 | 天津铁路信号有限责任公司 | Electro-hydraulic vehicle speed reducer monitoring system |
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| CN101819089A (en) * | 2009-10-21 | 2010-09-01 | 洛阳西苑车辆与动力检验所有限公司 | Control software of tractor wet clutch test stand |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175621A (en) * | 2013-02-02 | 2013-06-26 | 中北大学 | System and method for measuring gun barrel surface temperature in moving state |
| CN103175621B (en) * | 2013-02-02 | 2015-06-17 | 中北大学 | System and method for measuring gun barrel surface temperature in moving state |
| CN104162749A (en) * | 2013-05-17 | 2014-11-26 | 宝山钢铁股份有限公司 | State diagnosis method of multi-slippery bell high-speed ball thread screw rod and device for same |
| CN104162749B (en) * | 2013-05-17 | 2016-02-24 | 宝山钢铁股份有限公司 | Many sliding bell clipping the ball threaded screw rod method for diagnosing status and the device for the method |
| CN110174867A (en) * | 2019-06-14 | 2019-08-27 | 广州小鹏汽车科技有限公司 | A kind of power supply gear control system and method based on CANoe |
| CN110398684A (en) * | 2019-07-10 | 2019-11-01 | 北京汽车股份有限公司 | Method for diagnosing faults, system and the automobile of automatic clutch switch |
| CN110398684B (en) * | 2019-07-10 | 2021-11-23 | 北京汽车股份有限公司 | Fault diagnosis method and system for automobile clutch switch and automobile |
| CN113505900A (en) * | 2021-07-11 | 2021-10-15 | 中国国家铁路集团有限公司 | Motor train unit auxiliary converter module digital maintenance platform and method |
| CN113505900B (en) * | 2021-07-11 | 2023-12-01 | 中国国家铁路集团有限公司 | Digital maintenance platform and method for auxiliary converter module of motor train unit |
| CN115107824A (en) * | 2022-07-26 | 2022-09-27 | 天津铁路信号有限责任公司 | Electro-hydraulic vehicle speed reducer monitoring system |
| CN115107824B (en) * | 2022-07-26 | 2024-04-09 | 天津铁路信号有限责任公司 | Electrohydraulic vehicle speed reducer monitoring system |
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