CN203238685U - Braking electrohydraulic control system of electric bulldozer - Google Patents
Braking electrohydraulic control system of electric bulldozer Download PDFInfo
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- CN203238685U CN203238685U CN 201320270077 CN201320270077U CN203238685U CN 203238685 U CN203238685 U CN 203238685U CN 201320270077 CN201320270077 CN 201320270077 CN 201320270077 U CN201320270077 U CN 201320270077U CN 203238685 U CN203238685 U CN 203238685U
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- braking
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- machine controller
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Abstract
A braking electrohydraulic control system of an electric bulldozer comprises a braking pedal, a parking braking switch, a complete machine controller, a driving motor controller and a hydraulic braking valve, wherein communication between the controllers is achieved through CAN-bus, the braking pedal and the parking braking switch are connected with the input end of the complete machine controller, and the driving motor controller and the hydraulic braking valve are connected with the output end of the complete machine controller. According to the braking electrohydraulic control system of the electric bulldozer, safe braking of the electric bulldozer is achieved, comfort of braking is achieved, and impact on an operator is reduced.
Description
Technical field
The utility model relates to the bulldozer brakes, relates in particular to a kind of electricity and drives bulldozer braking electrohydraulic control system.
Background technology
The energy, environmental protection have become one of theme of the world today, and bulldozer plays a part key as important a member of engineering machinery to economic construction, also is the visual plant of energy consumption simultaneously.Therefore the research and development production that electricity the is driven bulldozer development trend that is inevitable, its braking control system is also arisen spontaneously.But present stage, China also was in developing stage for the research that electricity drives bulldozer braking electrohydraulic control system, and being badly in need of research and development provides a kind of electricity of safety and comfort to drive the bulldozer braking control system.
The utility model content
The purpose of this utility model is to provide a kind of electricity driving bulldozer braking electrohydraulic control system that electricity drives bulldozer that is applied to, and realizes that electricity drives the more braking of safety and comfort of bulldozer.
The scheme that adopts of the utility model is to achieve these goals:
A kind of electricity drives bulldozer braking electrohydraulic control system, comprise brake pedal, parking braking switch, complete machine controller, drive motor controller and hydraulic brake valve, carry out communication by CAN-bus between each controller, brake pedal links to each other with the input of parking braking switch with the complete machine controller, and drive motor controller links to each other with the complete machine controller output end with hydraulic brake valve.
The braking momentum signal that brake pedal provides passes to drive motor controller and hydraulic brake valve by the analysis of complete machine controller, when drive motors slows down, the complete machine controller cuts off the power supply to hydraulic brake valve, and the complete machine braking realizes that comfortable braking reduces the impact to the operator.
The parking brake signals that the parking braking switch provides passes to drive motor controller and hydraulic brake valve by the analysis of complete machine controller, the parking braking switch opens, the complete machine controller is to the drive motor controller instruction of walking normally, simultaneously, entire car controller is switched on to hydraulic brake valve, and car load is in non-on-position; The parking braking switch cuts out, and entire car controller cuts off the power supply to hydraulic brake valve, and car load is in on-position, have walk signal to the complete machine controller this moment, the complete machine controller can not send the walking instruction, realizes the safe parking braking of bulldozer, the danger of having avoided maloperation to bring.
The utility model has been realized safer, the more comfortable braking function of electric driving bulldozer by such scheme, has reduced the impact to the operator, has more ensured operator's safety.
Description of drawings
Fig. 1 electricity drives bulldozer braking electrohydraulic control system block diagram;
Fig. 2 electricity drives bulldozer braking electrohydraulic control system flow chart.
The specific embodiment
Below in conjunction with accompanying drawing and preferred embodiment whole brakes is explained in detail.
Shown in Fig. 2 flow chart, the information of complete machine controller Real-time Collection brake pedal and parking switch, detect relevant information after, just the analysis of complete machine controller commencing signal:
What brake pedal offered the complete machine controller is the 0-5V brake signal, the signal that the complete machine controller is directly processed is the linear corresponding numerical value of the 0-255 corresponding with the 0-5v brake signal, because the speed per hour of bulldozer is very slow, F-Zero is about 10Km/h, the work speed per hour is slow especially, therefore when slowing down, needn't do stepless deceleration to braking, can in the complete machine controller, be divided into 10 grades to pedal signal through experiment, the numerical value of the corresponding drive motors reduction of speed of every one-level.Preferably, for safe and reliable, we are decided to be effective range to 25-240, every increase by 20 speed steps, drive motor controller just reduces the one-level motor speed according to current rank, car load speed just reduces one-level, car load speed reduced to 0 when brake pedal was floored, the complete machine controller is analyzed according to the power of pedal signal and the result is uploaded among the CAN_bus, after drive motor controller receives signal intensity, give drive motors a rotating speed control safely and effectively, to reduce the travel speed of car load, the signal of exporting when brake pedal is 〉=also more than the lasting 300ms, the complete machine controller cuts off the power supply the signal of 4.5V to hydraulic brake valve, and the hydraulic braking oil circuit is opened friction plate to realize the ultimate braking of car load.
The parking braking switch offers the entire car controller parking brake signals, entire car controller is directly to hydraulic brake valve output parking brake signals, at this moment, whether the unattended operation personnel have the running signal input to running gear, and electricity drives bulldozer and all is in the parking braking state; If operator is opened because of carelessness under parking braking switch or the state of emergency under steam and is opened switch simultaneously; controller can be to by analyzing current vehicle-state; drive motors is carried out again braking electromagnetic valve being carried out power down process after the fastest safest deceleration; not only realize brake hard, also protected drive motors.
Claims (1)
1. an electricity drives bulldozer braking electrohydraulic control system, comprise brake pedal, parking braking switch, complete machine controller, drive motor controller and hydraulic brake valve, carry out communication by CAN-bus between each controller, it is characterized in that: brake pedal links to each other with the input of parking braking switch with the complete machine controller, and drive motor controller links to each other with the complete machine controller output end with hydraulic brake valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320270077 CN203238685U (en) | 2013-05-17 | 2013-05-17 | Braking electrohydraulic control system of electric bulldozer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320270077 CN203238685U (en) | 2013-05-17 | 2013-05-17 | Braking electrohydraulic control system of electric bulldozer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203238685U true CN203238685U (en) | 2013-10-16 |
Family
ID=49315999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320270077 Expired - Fee Related CN203238685U (en) | 2013-05-17 | 2013-05-17 | Braking electrohydraulic control system of electric bulldozer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203238685U (en) |
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2013
- 2013-05-17 CN CN 201320270077 patent/CN203238685U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 |