CN101824831B - Automatic fault diagnosis system of bulldozer - Google Patents
Automatic fault diagnosis system of bulldozer Download PDFInfo
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- CN101824831B CN101824831B CN2010101518753A CN201010151875A CN101824831B CN 101824831 B CN101824831 B CN 101824831B CN 2010101518753 A CN2010101518753 A CN 2010101518753A CN 201010151875 A CN201010151875 A CN 201010151875A CN 101824831 B CN101824831 B CN 101824831B
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Abstract
The invention relates to an automatic fault diagnosis system of a bulldozer. A controller and a display are connected with a CAN wire. The controller comprises an engine controller, a detection controller and a traveling controller. Each engine parameter sensor is connected with the engine controller; a bulldozer transmission and working parameter sensor, a bulldozer starting system electrical device detection points are connected with the detection controller; and a travelling control handle, a travelling brake pedal, a travelling solenoid valve, a steering brake solenoid valve and a bulldozer travelling pressure and velocity sensor are connected with the traveling controller. The invention can diagnose all faults of the electrical devices, lines, and part of hydraulic system of bulldozer, alarm and display the detected content, thus an operator can find the fault points directly according to indication of alarm, and then eliminate the faults effectively. Therefore, labor intensity is reduced and downtime is shortened, and the maintenance cost is reduced. The automatic fault diagnosis system can make sure the bulldozer operate safely and improve the overall management level of the bulldozer. The invention has the advantages of stable performance, convenient operation, safety and reliability and humanized interface.
Description
Technical field:
The present invention relates to the fault automatic system of engineering machinery, particularly a kind of bulldozer engine controller.
Background technology:
At present, homemade bulldozer electrical system does not have effective auto-check system only for basic engine start circuit and parameter measurement system to electrical part and line fault.Therefore, for not having foresight before the fault generation, the work of can not getting ready in advance, the living fault of place to go haircut passively.The practical work experience that relies on the operator after breaking down is often come the failure judgement point, and this has caused very big difficulty for dealing with problems fast, in time.Simultaneously, increase labor intensity of operating personnel, reduced production efficiency again, caused the increase of cost of production and the reduction of mechanical efficiency.
Summary of the invention:
The purpose of this invention is to provide a kind of automatic fault diagnosis system of bulldozer, overcome the deficiencies in the prior art, a kind of intelligent electronic auto-check system of visual, easy and simple to handle, multiple functional, microcomputerized control that automaticity is high is provided, early detection, maintenance, maintenance, reparation to mechanical disorder provide technical support, thereby effectively improve the application life of machine, shorten maintenance time and increase work efficiency.
The objective of the invention is to realize as follows: controller is connected by the CAN line with display, and controller comprises engine controller, detects controller, traveling controller; Each engine parameter sensor is connected with engine controller; The bulldozer transmission is connected with running parameter sensor, bulldozer start-up system electrical part test point and detection controller; The walking joystick is connected with traveling controller with velocity sensor with braking in a turn electromagnetic valve, bulldozer walking pressure with walking brake pedal, walking electromagnetic valve.
The engine parameter sensor comprises engine water temperature sensor, engine oil pressure pickup, collector temperature sensor, speed probe.
Bulldozer transmission and running parameter sensor comprise engine air filter pressure sensor, bulldozer working oil temperature sensor, bulldozer transmission oil temperature pick up, oil strain retaining pressure sensor, fuel level sender.Each sensor is transferred to the detection controller with signal, detects controller and according to each sensor acquisition parameter technical characterstic short circuit sensor is carried out automatic fault and judges with opening circuit.The detection controller is passed to display with the fault judgement data by the CAN line and is carried out display alarm and buzzing warning reminding.
Bulldozer start-up system electrical part test point comprises battery, starting switch, starting relay, safety relay, battery relay, motor suck-pull switch, each survey mark of motor.Each point is connected with the detection controller, the detection controller carries out the logical relation judgement to the voltage of each survey mark, whether correctly each device fault is judged automatically that according to logical relation controller is passed to display with the fault judgement data by the CAN line and carried out display alarm and buzzing warning reminding.
The walking electromagnetic valve is a proportion magnetic valve.
The braking in a turn electromagnetic valve is a switch electromagnetic valve.
Display is an image-text display able to programme.
Traveling controller carries out automatic fault and judges with opening circuit short circuit sensor according to each sensor acquisition parameter technical characterstic, and controller carries out the automatic fault judgement according to the control signal characteristics of walking brake pedal, walking joystick to the potentiometer open circuit of walking brake handle and walking brake pedal, short circuit etc.Traveling controller carries out automatic fault and judges with opening circuit the short circuit of electromagnetic valve according to the operating current technical characterstic of walking proportion magnetic valve, braking in a turn switch electromagnetic valve.Traveling controller is passed to display with the fault judgement data by the CAN communication and is carried out display alarm and buzzing warning reminding.
The present invention adopts intelligent automatic fault diagnosis system, can carry out fault to bulldozer start-up system electrical part, circuit and judge automatically; Main operational factor such as pressure, temperature, liquid level, rotating speed, voltage is judged unusually automatically; Short circuit and open fault to sensor are judged automatically; Short circuit and open fault to walking electromagnetic valve and braking in a turn electromagnetic valve are judged automatically; Logical relation by braking in a turn electromagnetic valve voltage parameter and brake pressure parameter is judged, the brakes fault is judged automatically; Walking brake pedal and the potentiometer short circuit and the open circuit fault of walking joystick are judged automatically.All abnormal parameters, electrical part fault, line fault information all can be passed to display by the CAN spider lines, and display carries out display alarm in the mode of literal, numeral or figure to fault message, simultaneously with the buzzing warning reminding.The operator can grasp the running status of bulldozer timely and effectively and the fault that takes place is solved fast.
The present invention can detect automatically, report to the police the parameter under the bulldozer running status, sensor fault, start-up system electrical part and circuit, walking joystick and brake pedal, walking proportion magnetic valve and braking in a turn switch electromagnetic valve and brakes fault, accurately shows the fault content and points out treating method.Thereby really promoted the intellectuality of bulldozer operating system.Can change simultaneously the maintenance system of equipment, existing maintenance system is passive fully, after the equipment fault, the operator can only carry out accident analysis according to phenomenon of the failure and experience, fault is got rid of the road of often will going for a stroll, and has both increased operator's labour intensity, increases delaying work the time of equipment again.This engine controller, can realize the automatic fault diagnosis and the alarm indication fault content of all electrical parts of bulldozer, circuit and part hydraulic system, the operator can directly cut the trouble point according to alarm, effectively mediates fault fast, both alleviated labour intensity, the equipment that compressed again delays work the time, greatly reduces maintenance cost, guarantees equipment safety operation, improved the overall equipment management level, has stable performance, the advantage of safe and reliable, easy to operate, user-centered interface.
Description of drawings:
Accompanying drawing is a theory structure schematic diagram of the present invention.
The specific embodiment:
With reference to accompanying drawing, controller is connected by CAN line 2 with display 12, is connected with build-out resistor 1 between the CANH of CAN line 2, CANL two lines, and controller comprises engine controller 4, detects controller 5, traveling controller 11; Display 12 is an image-text display able to programme; Each engine parameter sensor 3 is connected with engine controller 4; The bulldozer transmission is connected with running parameter sensor 6, bulldozer start-up system electrical part test point 7 and detection controller 5; The walking joystick is connected with traveling controller 11 with velocity sensor 10 with braking in a turn electromagnetic valve 9, bulldozer walking pressure with walking brake pedal 8, walking electromagnetic valve, and the walking electromagnetic valve is a proportion magnetic valve, and the braking in a turn electromagnetic valve is a switch electromagnetic valve.
The engine parameter sensor comprises engine water temperature sensor, engine oil pressure pickup, collector temperature sensor, speed probe etc.
4 pairs of engine water temperature sensors of engine controller, engine oil pressure pickup, collector temperature sensor, speed probe etc. carry out the detection of dynamic of parameter and device, and the data of gathering are carried out real-time logic judge, to judge that abnormal data sends display 12 to by CAN bus 2, display 2 is handled to the received signal again, submits to the bulldozer operator with picture and text and sound and light alarm form.For example: the engine motor oil hypotony, ask shutdown inspection! The operator can shut down the equipment that carries out engine maintaining or maintenance and manage and protect work.Guarantee that motor moves under safe condition.
Bulldozer transmission and running parameter sensor 6 comprise engine air filter pressure sensor, bulldozer working oil temperature sensor, bulldozer transmission oil temperature pick up, oil strain retaining pressure sensor, fuel level sender.
Bulldozer start-up system electrical part test point 7 comprises battery, starting switch, starting relay, safety relay, battery relay, motor suck-pull switch, each survey mark of motor.
Detect devices such as 5 pairs of engine air filters of controller pressure sensor, working oil temperature sensor, transmission oil temperature pick up, oil strain retaining pressure sensor, fuel level sender, battery, starting switch, starting relay, safety relay, battery relay, motor suck-pull switch, motor and carry out detection of dynamic, and the data of gathering are carried out real-time logic judge, to judge that abnormal data sends display 12 to by CAN bus 2, display 2 is handled to the received signal again, submits to the bulldozer operator with picture and text and sound and light alarm form.Such as showing " air filter obstructions ", " the working oil filter is stopped up ", " filter of walking oil is stopped up " etc., the operator can be directly renew cartridge more, accomplish initiatively maintenance, with the good operation of assurance motor, hydraulic system.Show " hydraulic oil oil temperature is too high ", the operator can diagnose hydraulic system, mediates fault or the equipment that reruns after handling of lowering the temperature, and guarantees device security.Show " A11 line fault " that the operator can directly reliably connect processing to line node.
Devices such as 11 pairs of walkings of traveling controller joystick, walking brake pedal, walking electromagnetic valve, braking in a turn electromagnetic valve, running motor, walking pressure sensor, brake-pressure sensor, speed of travel sensor carry out detection of dynamic, and the data of gathering are carried out real-time logic judge, to judge that abnormal data sends display 12 to by CAN line 2, display 12 is handled to the received signal again, submits to the bulldozer operator with picture and text and sound and light alarm form.Such as: show " walking joystick CAN communication abnormality ", the operator can be according to the signal redundancy characteristics of handle, and the working method that adopts potentiometer voltage directly to gather guarantees not influence the normal construction operation of bulldozer.Such as: show " walking braking electromagnetic valve fault ", the operator can directly change braking electromagnetic valve, guarantees the equipment security of operation.
If traveling controller 11 detects the walking joystick not when neutral position, can control motor can not start, and simultaneously display can be reminded the operator: " please hang neutral start "; Have only when walking joystick during at neutral position, motor could clean boot.The automatic detection of traveling controller 11 and security control have fully ensured the safety when bulldozer starts.Otherwise the walking of soil-shifting chance error causes potential safety hazard in the time of can being easy to cause starting.The operation if startup back operator does not temporarily walk, do not want again to stop working, can turn off the handle enable switch, traveling controller 11 detects and enables can control bulldozer running gear to close after the control signal, even run into handle so because of carelessness, bulldozer can not walked yet, and the walking joystick could be to the bulldozer achieve effective control when having only the enable switch of handle to be in the ON position.Increased by one intelligent and safe guarantee for bulldozer again.
Claims (7)
1. automatic fault diagnosis system of bulldozer, controller is connected by CAN line (2) with display (12), it is characterized in that: controller comprises engine controller (4), detects controller (5), traveling controller (11); Engine parameter sensor (3) is connected with engine controller (4); The bulldozer transmission is connected with running parameter sensor (6), bulldozer start-up system electrical part test point (7) and detection controller (5); Walking joystick, walking brake pedal (8), walking electromagnetic valve, braking in a turn electromagnetic valve (9), bulldozer walking pressure sensor, speed of travel sensor (10) all are connected with traveling controller (11);
Traveling controller (11) carries out automatic fault and judges that traveling controller (11) carries out automatic fault according to the control signal characteristics of walking brake pedal (8), walking joystick to potentiometer open circuit, the short circuit of walking joystick and walking brake pedal (8) and judges with opening circuit short circuit sensor according to each sensor acquisition parameter technical characterstic; Traveling controller (11) carries out automatic fault and judges with opening circuit the short circuit of electromagnetic valve according to the operating current technical characterstic of walking electromagnetic valve, braking in a turn electromagnetic valve (9);
Bulldozer transmission and running parameter sensor (6) comprise engine air filter pressure sensor, bulldozer working oil temperature sensor, bulldozer transmission oil temperature pick up, oil strain retaining pressure sensor, fuel level sender; Each sensor is transferred to signal and detects controller (5), detects controller (5) and according to each sensor acquisition parameter technical characterstic short circuit sensor is carried out automatic fault and judges with opening circuit;
Bulldozer start-up system electrical part test point (7) comprises battery, starting switch, starting relay, safety relay, battery relay, motor suck-pull switch, each survey mark of motor; Each survey mark is connected with detection controller (5), and whether detection controller (5) carries out the logical relation judgement to the voltage of each survey mark, correctly each device fault is judged automatically according to logical relation.
2. automatic fault diagnosis system of bulldozer according to claim 1 is characterized in that: the engine parameter sensor comprises engine water temperature sensor, engine oil pressure pickup, MAT Manifold Air Temperature sensor, speed probe.
3. automatic fault diagnosis system of bulldozer according to claim 1 is characterized in that: the walking electromagnetic valve is a proportion magnetic valve; The braking in a turn electromagnetic valve is a switch electromagnetic valve.
4. automatic fault diagnosis system of bulldozer according to claim 1 is characterized in that: engine controller, detection controller, traveling controller are programmable logic controller.
5. automatic fault diagnosis system of bulldozer according to claim 1 is characterized in that: the walking joystick is a Hall element control signal transmitter with the walking brake pedal.
6. automatic fault diagnosis system of bulldozer according to claim 1 is characterized in that: walking pressure sensor and speed of travel sensor are electronic type signal transmitting device.
7. automatic fault diagnosis system of bulldozer according to claim 1 is characterized in that: display (12) is an image-text display able to programme.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101518753A CN101824831B (en) | 2010-04-16 | 2010-04-16 | Automatic fault diagnosis system of bulldozer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101518753A CN101824831B (en) | 2010-04-16 | 2010-04-16 | Automatic fault diagnosis system of bulldozer |
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| CN101824831A CN101824831A (en) | 2010-09-08 |
| CN101824831B true CN101824831B (en) | 2011-12-14 |
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| CN102373724B (en) * | 2011-10-17 | 2013-08-21 | 山推工程机械股份有限公司 | Bulldozer control system |
| CN102518173A (en) * | 2011-12-08 | 2012-06-27 | 三一重机有限公司 | CAN (Controller Area Network) bus fault diagnostic equipment for excavator |
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| CN104764616A (en) * | 2015-04-09 | 2015-07-08 | 句容五星机械制造有限公司 | Hydraulic power assisted type steering bulldozer steering failure fault detection method |
| CN104748978A (en) * | 2015-04-10 | 2015-07-01 | 句容五星机械制造有限公司 | Method for detecting traveling fault of bulldozer |
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| CN2148357Y (en) * | 1993-01-21 | 1993-12-01 | 济南市公用事业科学研究所 | Intelligent engineering machinery working condition monitor |
| JP2650240B2 (en) * | 1993-06-23 | 1997-09-03 | 株式会社小松製作所 | Bulldozer dosing equipment |
| JPH10147952A (en) * | 1996-11-18 | 1998-06-02 | Komatsu Ltd | Dozing device for bulldozer |
| CN2820965Y (en) * | 2005-09-23 | 2006-09-27 | 天津工程机械研究院 | Monitoring and fault diagnostic device for bulldozer |
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