Hydraulic synchronous driving system for adjusting unbalanced load based on proportional valve controlled energy accumulator
A technology of hydraulic synchronization and drive system, applied in the direction of fluid pressure actuating device, servo motor, mechanical equipment, etc., can solve the problems of inability to ensure load balance, inability to achieve speed synchronization, inability to synchronize accuracy, etc., to eliminate adverse effects, eliminate Synchronization error, uniform coordination effect
Inactive Publication Date: 2012-08-29
CENT SOUTH UNIV
View PDF8 Cites 22 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The existing hydraulic system closed-loop synchronous control technology often adopts the equivalent mode and the master-slave mode, but they cannot guarantee the load balance in the driving process, and cannot fundamentally solve the problem of synchronization accuracy under the condition of partial load
In the Chinese invention patent CN101749294A announced on June 23, 2010, a hydraulic synchronous drive
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
[0012] As shown in the accompanying drawings, the present invention includes a hydraulic transmission circuit and an electro-hydraulic control system. The hydraulic transmission circuit includes a fuel tank 1, two oil suction filters 2, 5, two overflow valves 3, 4, two motors 6, 11, two shaft couplings 7, 10, two quantitative pumps 8, 9 , two high-pressure filters 13, 14, speed control valve 15, two three-position four-way electro-hydraulic reversing valves 16, 17, two hydraulic locks 18, 19, two balance valves 20, 21, two hydraulic cylinders 24 , 28, two two-position four-way proportional reversing valves 25,27, two accumulators 29,31. The first motor 6 is connected with the first quantitative pump 8 through the first coupling 7; the oil inlet of the first oil suction filter 2 is connected with the oil tank 1, and the oil outlet is connected with the inlet of the first quantitative pump 8 Oil port; the oil outlet of the first quantitative pump 8 is respectively connected to ...
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 discloses a hydraulic synchronous driving system for adjusting unbalanced load based on a proportional valve controlled energy accumulator, comprising a hydraulic transmission loop and an electro hydraulic control system. The hydraulic synchronous driving system aims to realize synchronous movement with higher precision under the unbalanced load condition. The hydraulic transmission loop comprises an oil tank, oil absorption filters, overflowing valves, motors, shaft couplers, metering pumps, high-pressure filters, a speed adjusting valve, three-position four-way electro hydraulic reversing valves, hydraulic locks, balance valves, hydraulic cylinders, two-position four-way proportional reversing valves and energy storage devices. The electro hydraulic control system comprises a displacement synchronous control loop based on displacement feedback of the hydraulic cylinders and a load balancing adjusting and controlling circuit based on pressure feedback of rodless cavities of the hydraulic cylinders. Aiming at an unbalanced load working condition, the working pressure of the hydraulic cylinders is adjusted and controlled through the proportional valve controlled energy accumulator and the load balance between the different hydraulic cylinders is realized. Therefore, the bad influences on the synchronous precision by the unbalanced load are radically eliminated, the coordinated consideration of the displacement synchronization and the load balance is realized and higher synchronization precision is realized.
Description
technical field [0001] The invention relates to a fluid pressure actuator, in particular to a hydraulic synchronous drive system for adjusting eccentric load based on a proportional valve-controlled accumulator. Background technique [0002] The hydraulic synchronous drive system is mainly aimed at high-load and high-power applications, where two or more hydraulic cylinders or hydraulic motors drive a load at the same time. This kind of synchronous drive of multiple actuators generally has synchronization of motion displacement or speed due to factors such as different loads, frictional resistance, leakage, and differences in cylinder bore manufacturing dimensions of each actuator. Especially in the case of high-power hydraulic synchronous drive where the working environment is complex, the load is severe, that is, the load is unbalanced, such as the synchronous propulsion system of the shield boring machine, and some lifting and lifting mechanical equipment, the partial loa...
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 IPC IPC(8): F15B11/22
Inventor 金耀夏毅敏
Owner CENT SOUTH UNIV
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap