Electric control closed type hydraulic steering system, control method and vehicle having system
A steering system and closed-control technology, applied in the field of vehicles, can solve the problems of low steering power and low driving power, and achieve the effects of increasing the steering power of the axle, saving energy and power consumption, and saving layout space
Active Publication Date: 2013-06-12
ZOOMLION HEAVY IND CO LTD
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, due to the influence of factors such as vehicle power supply and steering power double-acting cylinder, its driving power and steering power are small, so it is not suitable for use on heavy-duty construction machinery or special vehicles.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.
[0034] figure 1 A schematic diagram of the principle of the electronically controlled closed hydraulic steering system according to the present invention is shown. Such as figure 1 As shown, the electronically controlled closed hydraulic steering system includes a hydraulic steering device and a controller 60, and the hydraulic steering device includes: a double steering power cylinder 20 composed of a left steering power cylinder 21 and a right steering power cylinder 22 (see figure 2 ), the double steering power cylinder 20 is arranged between the steering knuckle arms 41, 42 of the steering axle trapezoidal arm 40 and the vehicle axle 50, and provides steering thrust to the steering axle trapezoidal arm 40; the variable pump 10 is driven by the...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
An electrically controlled closed-type hydraulic steering system and a vehicle with the same are disclosed. The system comprises a hydraulic steering device including a steering assist cylinder (20), a variable displacement pump (10) which directly provides hydraulic oil to the steering assist cylinder (20) through a main oil circuit, and a controller (60) signally connected with the pump (10). The output flow and the oil channel direction of the pump (10) are controlled by electric signals, and the controller (60) calculates the output flow of the pump (10) and determines the oil channel direction thereof based on signals of vehicle conditions and wheel steering requirements so as to output the electric signal for controlling the pump (10). The system achieves a closed-type hydraulic control for vehicle steering according to the principle of cylinder controlled by pump. Providing hydraulic power based on steering requirements, the system makes best use of output power of an engine or driving elements, satisfies energy saving requirements, decreases system elements, facilitates to optimize vehicle arrangements and reduce weight, and is suitable for the steering control of various engineering machinery vehicles or special vehicles.
Description
technical field [0001] The invention relates to an electronically controlled closed hydraulic steering system and a steering control method suitable for engineering vehicles, and also relates to a vehicle with the hydraulic steering system. Background technique [0002] With the development of construction machinery vehicles or special vehicles in the direction of heavy loads, the functions of multi-axle bearing, multi-axle steering and multi-steering modes are particularly necessary. [0003] For the existing multi-axle vehicles, the hydraulic steering of the vehicle is mainly realized through the control mode of the oil pump-control valve group-steering power cylinder or the control mode of hydraulic power assist and mechanical guidance. For example, the power oil source is provided by the gear pump, the system pressure is guaranteed by the relief valve, and the system flow is regulated by the speed control valve. When the steering is working or not working, the system alw...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/06B62D6/00B62D101/00B62D113/00B62D123/00B62D127/00
CPCB62D5/0463B62D5/065
Inventor 詹纯新刘权李义刘建华
Owner ZOOMLION HEAVY IND CO LTD