A multi-stage hybrid hydraulic system with precise speed regulation
A hydraulic system and mixed-connection technology, applied in the field of hydraulic systems, can solve the problems of inaccurate speed control, large flow fluctuations in the hydraulic system, and stuttering, etc., and achieve the effect of accurately controlling the feed speed and improving work efficiency
Active Publication Date: 2020-08-04
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
View PDF16 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
One is the load-sensing hydraulic system, the system principle is simple, the stability is good, the flow and speed are easy to control, but the main load-sensing hydraulic components are imported from abroad, the procurement cycle is long and the price is high
The other is the hydraulic transmission system, all of its hydraulic components can be matched with domestic parts, the procurement cycle is short, and the cost is low. However, in the hydraulic control system that requires precise speed regulation, its flow fluctuates greatly, resulting in unstable actuator speed. Unable to precisely control, prone to stuttering and other phenomena
[0004] Therefore, in view of the above situation, based on the hydraulic transmission system, a multi-stage hybrid precision speed regulation hydraulic system was invented, which can effectively solve the problems of large flow fluctuations and inaccurate speed control of the hydraulic system, and improve the control accuracy and stability of the system. sex
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
[0022] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.
[0023] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...
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 belongs to the field of hydraulic systems, and particularly relates to a multi-stage series-parallel accurate-speed-regulating hydraulic system which comprises an oil tank, a hydraulic pump, a multi-way valve, a first throttling valve, a reversing valve, a speed regulating valve, a first check valve, a feeding oil cylinder, a second throttling valve and a second check valve. The multi-stage series-parallel accurate-speed-regulating hydraulic system provided by the invention has the beneficial effects that through the arrangement of a multi-stage series-parallel speed regulating loop, the stepless regulation of the flow rate of the system and the accurate control of the feeding speed can be effectively achieved; and through a method for arranging a switching valve, namely thereversing valve, and one check valve on an oil path of a rodless cavity of the feeding oil cylinder as well as arranging the other check valve on an oil path of a rod cavity, a piston rod of the feeding oil cylinder can quickly retract and the working efficiency of the system can be improved.
Description
technical field [0001] The invention belongs to the field of hydraulic systems, in particular to a multi-stage mixed-connected precise speed-regulating hydraulic system. Background technique [0002] Due to its good stability and reliability, hydraulic systems are widely used in the field of mechanical equipment, especially in mechanical equipment with harsh working environments, such as hydrological water well drilling rigs, coal mine underground drilling rigs, etc. [0003] At present, there are mainly two technical solutions for the flow and speed control of the hydraulic system. One is the load-sensing hydraulic system, which has a simple principle, good stability, and easy control of flow and speed. However, the main load-sensing hydraulic components are imported from abroad, and the procurement cycle is long and the price is high. The other is the hydraulic transmission system, all of its hydraulic components can be matched with domestic parts, the procurement cycle i...
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): F15B13/02F15B13/04
CPCF15B13/02F15B13/027F15B13/04F15B2013/004F15B2211/20546
Inventor 闫保永雷丰励叶强波刘小华王杰朱利民孟祥辉阳廷军陈泽平郭向勇郝少楠傅双玲周涛刘思聪杜渔舟张先韬张晓泽
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD