Limit steering control method and device
A steering control and limit technology, which is applied to automatic steering control components, steering mechanisms, steering rods, etc., can solve the problems of low crane traffic efficiency, affecting crane operation progress, and inability to fully mobilize the working performance of the EHPS system, so as to improve traffic efficiency. Efficiency, effect of reducing turning radius
Active Publication Date: 2019-03-22
SANY AUTOMOBILE HOISTING MACHINERY
View PDF6 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, this all-wheel steering mode cannot fully mobilize the working performance of the EHPS system, so that the turning radius of the crane carrier in the all-wheel steering mode is still relatively large compared with the space range of the work site, so that the crane is in the The traffic efficiency in the work site is not high, which affects the operation progress of the crane
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
[0045] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0046] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art w...
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
The invention provides a limit steering control method and a limit steering control device. The method comprises the following steps of: detecting whether a crane carrier is in a limit steering mode or not, and acquiring a front axle rotation angle of the crane carrier in real time when the crane carrier is in the limit steering mode; according to the front axle rotation angle and a rotation angleamplification coefficient corresponding to each electro-hydraulic steering axle, calculating the limit rotation angle meeting the Akman theorem of the left wheel or right wheel currently corresponding to each electro-hydraulic steering axle; acquiring the real rotation angle of each electro-hydraulic steering axle which belongs to the same wheel as the corresponding limit rotation angle in real time; according to the limit rotation angle of each electro-hydraulic steering axle, adjusting the steering of the electro-hydraulic steering axle until the absolute value of the rotation angle difference between the limit rotation angle of the electro-hydraulic steering axle and the real rotation angle of the electro-hydraulic steering axle is not more than a preset angle threshold value of the electro-hydraulic steering axle. According to the method, the phenomenon of abnormal abrasion of the tire can be avoided when the crane carrier is in the limit steering mode, and the turning radius is greatly reduced, so that the passing efficiency in a narrow space is improved.
Description
technical field [0001] The present application relates to the technical field of crane steering control, in particular, to a limit steering control method and device. Background technique [0002] With the continuous development of science and technology, mobile cranes usually use a crane carrier equipped with a mechanical lever steering system and an EHPS (Electro-Hydraulic Power Steering) system to realize the mobile operation function of the mobile crane. Mobile cranes (for example, all-terrain cranes with five or more axles) are also widely used in various scenarios and industries due to their ability to move and lift heavy objects. Therefore, it is inevitable that mobile cranes will not be assigned to work sites with narrow spaces for hoisting operations. The turning radius of the crane carrier when moving in a work site with a small space will affect the crane's ability to move in a work site with a small space. An extremely important indicator of traffic efficiency. ...
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 Applications(China)
IPC IPC(8): B62D6/00B62D137/00
CPCB62D6/00
Inventor 谭松涛刘煌夏杰龙
Owner SANY AUTOMOBILE HOISTING MACHINERY