CN202006769U - Power output control system for tractor - Google Patents
Power output control system for tractor Download PDFInfo
- Publication number
- CN202006769U CN202006769U CN2011201125491U CN201120112549U CN202006769U CN 202006769 U CN202006769 U CN 202006769U CN 2011201125491 U CN2011201125491 U CN 2011201125491U CN 201120112549 U CN201120112549 U CN 201120112549U CN 202006769 U CN202006769 U CN 202006769U
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- Prior art keywords
- power output
- control unit
- control
- power
- tractor
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- Expired - Fee Related
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- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
The utility model relates to a power output control system for a tractor. The power output control system comprises a control unit, an electromagnetic valve, a rotating speed sensor, a power output switch and a display; wherein the power output switch is connected with a power supply input end of the control unit. The control unit is connected with the power supply input end of the rotating speed sensor. The control unit is connected with the display through an LIN bus. The control of power output bond can only be completed under a limited condition so as to avoid causing damage to the power output unit and relative parts of the tractor. The state of the power output bond is displayed by the display, so that a driver can timely and conveniently know the operation state.
Description
Technical field
The utility model belongs to the trac. field of electric control, relates to a kind of tractor dynamic power output control system.
Background technology
Takeoff output is a critical function of trac., and the external device (ED)s such as agricultural machinery and implement that are used for being equipped with to trac. provide power.On large tractor, the power-transfer clutch that common power output structure is a power take-off shaft by retarder and electrohydraulic control directly is connected with driving engine.Takeoff output control mainly is the joint of control takeoff output, the joint of takeoff output is meant that power take-off shaft changes to the synchronous slew mode of engine speed by quiescence and can transmit the process of rating horsepower, and just power output clutch is by the process that is separated to full engagement fully.In fact, the takeoff output Engagement Control is exactly the control to the power output clutch engagement time.On the one hand, the clutch engagement time is long more, and joint impact is more little; thereby the farm implements that help protecting mechanical transmission component and takeoff output to drive, on the other hand, the clutch engagement time is short more; the sliding wear time of clutch facing is short more, helps reducing the wearing and tearing of clutch facing.
What the takeoff output connection control method of large tractor was common has two kinds, a kind of is that takeoff output " soft " engages, promptly the joint to power output clutch adopts closed loop control, adjusts engagement time according to the takeoff output load, and effect can be well controlled.But this method need adopt expensive controller and proportion magnetic valve, in can't satisfying, the low side trac. is to the control of cost.Another kind method adopts switch electromagnetic valve control power output clutch, reduces joint impact by add energy storage in hydraulic circuit.The engagement time of this method is normally fixed, and can't be controlled effect preferably, but also can protect parts to a certain extent, and therefore this control method has application more widely.In order to realize the control of tractor dynamic power output, also need a control system of forming by electronics, electric component.
The utility model content
The purpose of this utility model is to provide a kind of reliability and high power take off control system of degree of safety that is applicable to modern trac..For achieving the above object, the utility model adopts following technical scheme:
A kind of tractor dynamic power output control system comprises control unit, electromagnetic valve, tachogen, power take-off valve, telltale; The switch that outputs power connects the power input of control unit; Control unit connects the power input of tachogen; Control unit is by the total wire joint telltale of LIN.
The utility model can produce following beneficial effect after adopting technique scheme: the control takeoff output engages and can only finish under the condition that limits, and avoids the power take-off unit of trac. and relevant parts are caused damage; Show the state that takeoff output engages by telltale, make chaufeur can in time understand serviceability easily.
Description of drawings
Fig. 1 is the structure connection diagram of the utility model tractor dynamic power output control system.
The control flow chart of the control method that Fig. 2 is adopted for the utility model tractor dynamic power output control system.
The specific embodiment
By the following examples, and in conjunction with the accompanying drawings, the utility model will be further described.
As shown in Figure 1, the tractor dynamic power output control system comprises control unit 6, electromagnetic valve 5, tachogen 4, power take-off valve 7, telltale 8.
Control unit 6 adopts micro controller system as the master control chip, has tachogen 4 power supply and signal processing circuits, electromagnetic valve 5 driving circuits, LIN bus transmission circuit etc.
Power take-off valve 7 is connected to the power input of control unit 6.When power take-off valve 7 closures, control unit 6 energisings are started working.
Control unit 6 connects the power input of tachogen 4, for tachogen 4 provides working power.Control unit 6 can be used for by the working current that detects tachogen 4 determining whether tachogen 4 has fault.
Control unit 6 is connected to telltale 8 by the LIN bus, and control unit 6 is to telltale 8 transmit status information, the mode of operation of telltale 8 display control programs.
Control unit 6 drives electromagnetic valve 5, the break-make of control electromagnetic valve 5.During electromagnetic valve 5 conductings, power-transfer clutch 2 engages, and driving engine 1 connects and driving power take-off unit 3 by power-transfer clutch 2.When electromagnetic valve 5 disconnected, power-transfer clutch 2 separated, and driving engine 1 can not drive power take-off unit 3.
The takeoff output control method is moved in control unit 6 with software mode.When power take-off valve 7 closures, control unit 6 energising work, the control method that brings into operation software.
Control flow as shown in Figure 2, control unit 6 at first detects the state of tachogen 4, judges whether trouble free of tachogen 4, if tachogen 4 has fault, does not engage power take-off unit 3, sends breakdown signal to telltale 8; If tachogen 4 troubles free, then detect the rotating speed of power take-off shaft, judge whether the rotating speed of power take-off shaft surpasses maximum permission engaging rotating speed, if rotating speed surpasses the maximum engaging rotating speed that allows, do not engage power take-off unit 3, send spurious signal to telltale 8; If rotating speed is no more than the maximum engaging rotating speed that allows, control electromagnetic valve 5 adhesives engage power take-off unit 3, send takeoff output and engage signal to telltale 8.
Claims (1)
1. a tractor dynamic power output control system comprises control unit (6), electromagnetic valve (5), tachogen (4), power take-off valve (7), telltale (8); It is characterized in that: power take-off valve (7) connects the power input of control unit (6); Control unit (6) connects the power input of tachogen (4); Control unit (6) is by the total wire joint telltale of LIN (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201125491U CN202006769U (en) | 2011-04-18 | 2011-04-18 | Power output control system for tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201125491U CN202006769U (en) | 2011-04-18 | 2011-04-18 | Power output control system for tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202006769U true CN202006769U (en) | 2011-10-12 |
Family
ID=44748430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201125491U Expired - Fee Related CN202006769U (en) | 2011-04-18 | 2011-04-18 | Power output control system for tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202006769U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167000A (en) * | 2011-04-18 | 2011-08-31 | 中国一拖集团有限公司 | Tractor power output control system and control method |
-
2011
- 2011-04-18 CN CN2011201125491U patent/CN202006769U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167000A (en) * | 2011-04-18 | 2011-08-31 | 中国一拖集团有限公司 | Tractor power output control system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FIRST TRACTOR CO., LTD. Free format text: FORMER OWNER: CHINA YITUO GROUP CO., LTD. Effective date: 20130722 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 471039 LUOYANG, HENAN PROVINCE TO: 471004 LUOYANG, HENAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130722 Address after: 471004 Jianshe Road, Jianxi, Henan, No. 154, Patentee after: First Tractor Co., Ltd. Address before: 471039 No. 39, Xiyuan Road, Jianxi District, Henan, Luoyang Patentee before: China Yituo Group Co., Ltd. |
|
| 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: 20111012 Termination date: 20180418 |