CN202987263U - Heavy vehicle electronic control hydraulic steering system - Google Patents
Heavy vehicle electronic control hydraulic steering system Download PDFInfo
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- CN202987263U CN202987263U CN 201220634796 CN201220634796U CN202987263U CN 202987263 U CN202987263 U CN 202987263U CN 201220634796 CN201220634796 CN 201220634796 CN 201220634796 U CN201220634796 U CN 201220634796U CN 202987263 U CN202987263 U CN 202987263U
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Abstract
The utility model provides a heavy vehicle electronic control hydraulic steering system based on a slip electromagnetic clutch. The system comprises an engine, the slip electromagnetic clutch, a steering oil pump, a steering valve and a power cylinder which are all connected in sequence. The steering valve is connected with a steering wheel through a turn angle sensor. The heavy vehicle electronic control hydraulic steering system further comprises an electronic control unit (ECU) connected with the slip electromagnetic clutch and the turn angle sensor. When a vehicle turns on site or at a low speed, the electromagnetic clutch is totally connected, the steering oil pump runs at a high speed along with an engine so as to provide high assistance, and the convenience requirements of low-speed turning are met. When the vehicle turns at a high speed, the electromagnetic clutch is partially connected, the steering oil pump runs at a low speed to prove small assistance, the requirements of operating stability during a high speed are met, a load of the engine is reduced at the time, and power consumption of the engine is also reduced. When the vehicle does not turn, the ECU outputs extremely small current, the steering oil pump runs at an extremely low rotating speed, and accordingly power consumption of the engine is greatly reduced.
Description
Technical field
The present invention relates to the Automotive Steering Technology field, relate in particular to a kind of heavy-duty vehicle electric-controlled hydraulic steering swivel system and control method thereof based on the slip type magnetic clutch.
Background technology
The heavy-duty vehicle of automobile manufacturing enterprise production both at home and abroad all adopts and has the fixedly hydraulic power-assist steering system of assist characteristic at present, the assist characteristic of this type of steering swivel system is determined by the construction parameter of servo rotating valve and the delivery quality of oil pump, can't solve the contradiction between low speed ease of steering and high speed steering stability; And the power consumption of hydraulic booster system is larger, accounts for 3% of complete-vehicle oil consumption.
In recent years, the novel steering such as electric-controlled hydraulic servo-steering, electrohydraulic steering and electric power steering system has appearred in the continuous application along with Eltec in automobile steering system.patent " electric control hydraulic power-assisted steering " (CN200320118460.1) adopts stepping motor to regulate the cutoff port size of bypass disc, enter the hydraulic fluid flow rate of steering control valve with control, this scheme has solved the problem of automobile high-speed steering handwheel " unstable " to a certain extent, but owing to turning to oil pump all the time in running in car running process, the energy consumption of steering swivel system can not reduce, patent " control setup of electrical machinery driving hydraulic helping hand Steering System " (CN200720034596.2) adopts DC machine directly to drive oil pump, according to corner and vehicle speed signal control oil pump rotating speed, this device can reduce the operation pressure of steering cylinder in automobile high-speed, reduce power steering, handling maneuver stability in the time of can guaranteeing to run at high speed, and when not turning to, oil pump is with very low speed running, energy consumption is very low, but high-power electric pump technical bottleneck and the expensive problem required due to this device are difficult to solve, therefore be not suitable for heavy-duty vehicle, patent " electric boosting steering system " (CN200680051114.2) adopts electrical motor directly to drive the deflector power-assisted, the size of power-assisted is determined by steering handwheel input torque and the speed of a motor vehicle, this scheme can be taken into account portability and handling stability well, and power-assisted just when power-assisted namely has input torque as required, so energy consumption is also very low, this system is widely used in manned vehicle, but the wheel flutter of heavy-duty vehicle load is very large, corresponding steering resisting torque is also very large, if employing electric boosting steering system, there is technical bottleneck in required high-power boosting motor, and the 24V electric system of heavy-duty vehicle can not be supported high-performance electrical motor, therefore limited the application of electric boosting steering system on heavy-duty vehicle.
In sum, there is following technical matters in existing steering swivel system: it is high that hydraulic power-assist steering system can not be taken into account ease of steering and road-holding property and energy consumption, the electric-controlled hydraulic steering swivel system of regulating based on the bypass disc cutoff port can not solve the high problem of energy consumption, can not satisfy heavy-duty vehicle to the requirement of high steering power based on electric hydraulic power-assisted steering system and the electric boosting steering system of motor-drive pump.
In view of this, be necessary to propose a kind of heavy-duty vehicle electric-controlled hydraulic steering swivel system and control method thereof based on the slip type magnetic clutch.
Summary of the invention
The object of the present invention is to provide a kind of heavy-duty vehicle electric-controlled hydraulic steering swivel system and control method thereof based on the slip type magnetic clutch.
A kind of heavy-duty vehicle electric-controlled hydraulic steering swivel system based on the slip type magnetic clutch of the present invention, described system comprises driving engine, slip type magnetic clutch, power steerig pump, convertible valve and the power cylinder that connects successively, described convertible valve is connected with steering handwheel by rotary angle transmitter, and described system also comprises the electronic control unit that is connected with rotary angle transmitter with the slip type magnetic clutch.
As a further improvement on the present invention, described slip type magnetic clutch comprises imput shaft, be positioned at driving wheel, driven shaft on imput shaft, be positioned at the flower wheel on driven shaft, described flower wheel is provided with some coils, and described driven shaft is provided with brush and Hall element.
As a further improvement on the present invention, described driving engine is provided with crank shaft pulley, described power steerig pump is provided with input shaft, the crank shaft pulley of described driving engine is connected with the driving wheel of slip type magnetic clutch, and the driven shaft of the input shaft of described power steerig pump and slip type magnetic clutch is rigidly connected.
As a further improvement on the present invention, described Hall revolution speed transducer comprises that some driven shafts with the slip type magnetic clutch synchronize the some magnetic poles that rotate and the Hall element that is fixedly installed.
As a further improvement on the present invention, described electronic control unit comprises connected PID arithmetic and logic unit and actuator.
As a further improvement on the present invention, be provided with tooth bar or tooth fan rocker shaft and piston in described power cylinder, described tooth bar or tooth fan rocker shaft are connected with convertible valve.
The invention has the beneficial effects as follows: the present invention is based on the slip type magnetic clutch heavy-duty vehicle electric-controlled hydraulic steering swivel system can vehicle pivot stud or low speed rotation to the time, magnetic clutch is engaged fully, power steerig pump turns round with high engine speeds, thereby larger power-assisted is provided, satisfies the requirement of low speed ease of steering; When vehicle high-speed turned to, magnetic clutch partly engaged, and the power steerig pump low-speed running provides less power-assisted, the road-holding property requirement when satisfying high speed, this moment driving engine load reduction, its power consumption also decreases; When not turning to, ECU exports minimum electric current, makes power steerig pump with extremely low rotation speed operation, thereby reduces widely the power consumption of driving engine.
This steering swivel system taken into account well the heavy-duty vehicle low speed rotation to portability and the stability of high speed steering, and make high speed steering and the driving engine power consumption when not turning to reduces greatly, can improve safe, the energy-conservation and environmental-protecting performance of heavy-duty vehicle.Due between the driving and driven parts of slip type magnetic clutch without any mechanical connection, without attrition, without impacting, adjust exciting current and just can change rotating speed, therefore, the present invention has good controllability, safeguard simply, can guarantee that the electric-controlled hydraulic steering swivel system has good functional reliability.
Description of drawings
Fig. 1 is based on the structural representation of the heavy-duty vehicle electric-controlled hydraulic steering swivel system of slip type magnetic clutch in an embodiment of the present invention.
Fig. 2 is the structural representation of slip type magnetic clutch in an embodiment of the present invention.
The specific embodiment
Describe the present invention below with reference to each embodiment shown in the drawings.But these embodiments do not limit the present invention, and the conversion on the structure that those of ordinary skill in the art makes according to these embodiments, method or function all is included in protection scope of the present invention.
Ginseng Figure 1 shows that the structural representation of a kind of heavy-duty vehicle electric-controlled hydraulic steering swivel system based on the slip type magnetic clutch of the present invention.This system comprises driving engine, slip type magnetic clutch, power steerig pump, convertible valve and the power cylinder 1 that connects successively, wherein convertible valve is connected with steering handwheel by rotary angle transmitter, also is connected with electronic control unit ECU with slip type magnetic clutch and rotary angle transmitter.Preferably, also be provided with tooth bar or tooth fan rocker shaft 3 and piston 2 in power cylinder 1, tooth bar or tooth fan rocker shaft 3 are connected with convertible valve.
Join shown in Figure 2, slip type magnetic clutch in the present embodiment comprises imput shaft 8, be positioned at driving wheel 9, driven shaft 4 on imput shaft 8, be positioned at the flower wheel 10 on driven shaft 4, flower wheel 10 is provided with some coils 7, and driven shaft 4 is provided with brush 5 and Hall revolution speed transducer 6.Driving engine is provided with crank shaft pulley, and power steerig pump is provided with input shaft, and the crank shaft pulley of driving engine is connected with the driving wheel 9 of slip type magnetic clutch, transmits the power that driving engine is carried; The driven shaft 4 of the input shaft of power steerig pump and slip type magnetic clutch is rigidly connected.In the present embodiment, the structure of driving wheel is similar to the cage motor of asynchronous dynamo, form magnetic field after the coil electricity on flower wheel, when driving wheel rotates, will induce electric current in cage motor, electric current can form magnetic torque in magnetic field, follows the driving wheel rotation thereby promote flower wheel, certainly the rotating speed of flower wheel can only be lower than the rotating speed of driving wheel, as long as in regulating winding, the size of electric current just can obtain the driving wheel speed discrepancy different with flower wheel.The effect of brush is similar to the brush effect in DC machine, continue equidirectional power supply for the coil in flower wheel, Hall revolution speed transducer forms (rotor and stator) by two parts, rotor is to synchronize 6 pairs of magnetic poles that rotate with flower wheel, stator is fixed Hall element, when epitrochanterian magnetic pole turns over above Hall element, Hall element will be exported the square-wave signal that high-low level alternately occurs, and is the rotating speed of oil pump as long as electronic control unit ECU detects that the frequency of square-wave signal just can converse when the rotating speed of front driven wheel.
As can be seen from the above technical solutions, the heavy-duty vehicle electric-controlled hydraulic steering swivel system that the present invention is based on the slip type magnetic clutch vehicle pivot stud or low speed rotation to the time, magnetic clutch is engaged fully, power steerig pump turns round with high engine speeds, thereby larger power-assisted is provided, satisfies the requirement of low speed ease of steering; When vehicle high-speed turned to, magnetic clutch partly engaged, and the power steerig pump low-speed running provides less power-assisted, the road-holding property requirement when satisfying high speed, this moment driving engine load reduction, its power consumption also decreases; When not turning to, ECU exports minimum electric current, makes power steerig pump with extremely low rotation speed operation, thereby reduces widely the power consumption of driving engine.
This steering swivel system taken into account well the heavy-duty vehicle low speed rotation to portability and the stability of high speed steering, and make high speed steering and the driving engine power consumption when not turning to reduces greatly, can improve safe, the energy-conservation and environmental-protecting performance of heavy-duty vehicle.Due between the driving and driven parts of slip type magnetic clutch without any mechanical connection, without attrition, without impacting, adjust exciting current and just can change rotating speed, therefore, the present invention has good controllability, safeguard simply, can guarantee that the electric-controlled hydraulic steering swivel system has good functional reliability.
Be to be understood that, although this specification sheets is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should make specification sheets as a whole, technical scheme in each embodiment also can through appropriate combination, form other embodiments that it will be appreciated by those skilled in the art that.
Above listed a series of detailed description is only illustrating for feasibility embodiment of the present invention; they are not to limit protection scope of the present invention, all disengaging within equivalent embodiment that skill spirit of the present invention does or change all should be included in protection scope of the present invention.
Claims (6)
1. heavy-duty vehicle electric-controlled hydraulic steering swivel system, it is characterized in that, described system comprises driving engine, slip type magnetic clutch, power steerig pump, convertible valve and the power cylinder that connects successively, described convertible valve is connected with steering handwheel by rotary angle transmitter, and described system also comprises the electronic control unit that is connected with rotary angle transmitter with the slip type magnetic clutch.
2. steering swivel system according to claim 1, it is characterized in that, described slip type magnetic clutch comprises imput shaft, be positioned at driving wheel, driven shaft on imput shaft, be positioned at the flower wheel on driven shaft, described flower wheel is provided with some coils, and described driven shaft is provided with brush and Hall element.
3. steering swivel system according to claim 2, it is characterized in that, described driving engine is provided with crank shaft pulley, described power steerig pump is provided with input shaft, the crank shaft pulley of described driving engine is connected with the driving wheel of slip type magnetic clutch, and the driven shaft of the input shaft of described power steerig pump and slip type magnetic clutch is rigidly connected.
4. steering swivel system according to claim 2, is characterized in that, described Hall revolution speed transducer comprises that some driven shafts with the slip type magnetic clutch synchronize the some magnetic poles that rotate and the Hall element that is fixedly installed.
5. steering swivel system according to claim 1, is characterized in that, described electronic control unit comprises connected PID arithmetic and logic unit and actuator.
6. steering swivel system according to claim 1, is characterized in that, is provided with tooth bar or tooth fan rocker shaft and piston in described power cylinder, and described tooth bar or tooth fan rocker shaft are connected with convertible valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220634796 CN202987263U (en) | 2012-11-27 | 2012-11-27 | Heavy vehicle electronic control hydraulic steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220634796 CN202987263U (en) | 2012-11-27 | 2012-11-27 | Heavy vehicle electronic control hydraulic steering system |
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| CN202987263U true CN202987263U (en) | 2013-06-12 |
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| CN 201220634796 Expired - Fee Related CN202987263U (en) | 2012-11-27 | 2012-11-27 | Heavy vehicle electronic control hydraulic steering system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010298A (en) * | 2012-11-27 | 2013-04-03 | 江苏大学 | Electronic control fluid-link steering system for heavy-duty vehicle and control method thereof |
| CN104554431A (en) * | 2015-01-06 | 2015-04-29 | 江苏大学 | Energy recovery system of hydraulic power steering system and control method thereof |
| CN105109549A (en) * | 2015-08-12 | 2015-12-02 | 江苏大学 | Rotating-speed-estimation-based self-adaptive fuzzy and sliding-mode control method of ESC |
| CN105835946A (en) * | 2016-05-17 | 2016-08-10 | 上海汽车集团股份有限公司 | Hydraulic steering auxiliary system |
| CN107848562A (en) * | 2015-07-16 | 2018-03-27 | 本田技研工业株式会社 | Double-pinion type electric power-assisted steering apparatus |
| CN113635967A (en) * | 2021-09-17 | 2021-11-12 | 山东蓬翔汽车有限公司 | Control method of energy-saving hydraulic power-assisted steering system of heavy-duty car |
-
2012
- 2012-11-27 CN CN 201220634796 patent/CN202987263U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010298A (en) * | 2012-11-27 | 2013-04-03 | 江苏大学 | Electronic control fluid-link steering system for heavy-duty vehicle and control method thereof |
| CN103010298B (en) * | 2012-11-27 | 2015-12-02 | 江苏大学 | Heavy-duty vehicle electric-controlled hydraulic steering swivel system and control method thereof |
| CN104554431A (en) * | 2015-01-06 | 2015-04-29 | 江苏大学 | Energy recovery system of hydraulic power steering system and control method thereof |
| CN107848562A (en) * | 2015-07-16 | 2018-03-27 | 本田技研工业株式会社 | Double-pinion type electric power-assisted steering apparatus |
| CN107848562B (en) * | 2015-07-16 | 2020-03-13 | 本田技研工业株式会社 | Double-pinion type electric power steering device |
| CN105109549A (en) * | 2015-08-12 | 2015-12-02 | 江苏大学 | Rotating-speed-estimation-based self-adaptive fuzzy and sliding-mode control method of ESC |
| CN105109549B (en) * | 2015-08-12 | 2017-12-05 | 江苏大学 | Electromagnetic slip clutches method of adaptive fuzzy sliding mode control based on speed estimate |
| CN105835946A (en) * | 2016-05-17 | 2016-08-10 | 上海汽车集团股份有限公司 | Hydraulic steering auxiliary system |
| CN113635967A (en) * | 2021-09-17 | 2021-11-12 | 山东蓬翔汽车有限公司 | Control method of energy-saving hydraulic power-assisted steering system of heavy-duty car |
| CN113635967B (en) * | 2021-09-17 | 2022-04-26 | 山东蓬翔汽车有限公司 | Control method of energy-saving hydraulic power-assisted steering system of heavy-duty car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Gang Yang steering system Co., Ltd Assignor: Jiangsu University Contract record no.: 2015320000171 Denomination of utility model: Electronic control fluid-link steering system for heavy-duty vehicle and control method thereof Granted publication date: 20130612 License type: Exclusive License Record date: 20150413 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20161127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |