Dynamic Performance Research on Reversing Valve of,
Dynamic Performance Research on Reversing Valve of Hydraulic Breaker* Guoping Yang1, Yubao Chen2, Bo Chen1 1College of Automotive Engineering, Shanghai University of Engineering and Science, Shanghai, China 2Department of Industrial & Manufacturing Systems Engineering, University of Michigan-Dearborn, Dearborn, USA Email: ygpljyl@163Dynamic Performance Research on Reversing Valve of,,The dynamic simulation research of the new type reversing valve is conducted. The effects of the system parameters on the working performance are researched systematically and deeply. The regular understanding on the motion of the reversing valve is obtained, which provides theoretical basis for the innovation and manufacturing of a new generation of hydraulic breaker reversing valve.Dynamic Performance Research on Reversing Valve of,,The structure and operational principle on a new type reversing valve of hydraulic breaker are introduced. The nonlinear mathematic model and simulation model of the new type reversing valve are built. The dynamic simulation research of the new type reversing valve is conducted. The effects of the system parameters on the working performance are researched systematically and deeply.Dynamic Performance Research on Reversing Valve of,,The dynamic simulation research of the new type reversing valve is conducted. The effects of the system parameters on the working performance are re-searched systematically and deeply. The regular understanding on the motion of the reversing valve is obtained, which provides theoretical basis for the innovation and manufacturing of a new generation of hydraulic breaker reversing valve.Dynamic Performance Research on Reversing Valve of,,The dynamic simulation research of the new type reversing valve is conducted. The effects of the system parameters on the working performance are re-searched systematically and deeply. The regular understanding on the motion of the reversing valve is obtained, which provides theoretical basis for the innovation and manufacturing of a new generation of hydraulic breaker reversing valveDynamic Performance Research on Reversing Valve of,,Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): http://www.scirp.org/journal/P... (external link) http,
Hydraulic Breaker; Reversing Valve; Dynamic Performance,
Dynamic Performance Research on Reversing Valve of Hydraulic Breaker. Guoping Yang, Yubao Chen, Bo Chen. World Journal of Mechanics Vol.2 No.6,December 20, 2012 DOI: 10.4236/wjm.2012.26035 4,449 Downloads 7,462 Views Citations. Multiple Scenarios Simulation of Global Ecological Footprint Based on Empirical Mode Decomposition MethodDynamic Performance Research on Reversing Valve of,,The dynamic simulation research of the new type reversing valve is conducted. The effects of the system parameters on the working performance are re-searched systematically and deeply. The regular understanding on the motion of the reversing valve is obtained, which provides theoretical basis for the innovation and manufacturing of a new generation of hydraulic breaker reversing valveDynamic Performance Research on Reversing Valve of,,Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): http://www.scirp.org/journal/P... (external link) http,Impact System Dynamic Characteristics of Hydraulic Rock,,For the phenomenon of a hydraulic rock drill based on an underlapped reversing valve, the mechanical structure of the overlapped reversing form was proposed, which affected the pressure pulsation of the impact system, and motion of the impact piston was analyzed. The model of a hydraulic rock drill was built based on Newton’s laws. The initial lead size of the reversing point was calculated,Numerical and Experimental Investigations on Dynamic,,17.12.2019· Chen et al. analyzed the static and dynamic performance of a hydraulic cylinder with adaptive, Li et al. studied a hydraulic rock drill and investigated the overlapped reversing valve to propose a fault diagnosis method [7, 8]. Owing to manufacturing and assembling errors, the actual joints obtain radial clearance. The phenomenon of clearance has received the attention of researchers since,1868. Modeling simulation and parameters optimization for,,element in the hydraulic system. To analyse the dynamic characteristic of hydraulic impactor system, we use related component model of Hydraulic Component Design Library to create the slide valve type direct-acting pressure relief valve, which is based on the structure and performance parameters of relief valve. The model is shown in Fig. 5. 4,
Structure Parameters Optimization Analysis of Hydraulic,
In order to improve the impact performance, the structure of hydraulic hammer should be optimized. In this paper, the ranges of eight vital structure parameters of piston and reversing valve system of hydraulic hammer were selected firstly; and then found the best value of different parameters under experiments with the method of computer optimization and the parametric analysis method,Modeling simulation and parameters optimization for,,28.06.2018· [1-7]. The main structure includes hydraulic impact piston, reversing valves, anitrogen room and other basic part. In the process of the hydraulic impactor’ optimization design, the optimization of the hydraulic impactor’s performance parameters (such as impact energy and impact frequency) is the key point. Finding the relationship between performance’s parameters and structure,Fault Diagnosis Research on Impact System of Hydraulic,,18.07.2018· In the production and manufacturing process of hydraulic rock drill, there are small impact energy and low impact frequency, and a fault diagnosis method based on the internal mechanism testing and testing of the hydraulic rock drill is proposed. This method is used to test the change law of hydraulic oil in the rock drill, by retaining the test holes on the cylinder body and other important,Estimation of Impact Loads in a Hydraulic Breaker by,,Recent studies of hydraulic breakers include the work of Ficarella et al. [3–5], who used a 1D simulation and experimental tests to investigate the performance and design of a hydraulic breaker.Several other studies have focused on improving performance, reducing the weight of the housing, and optimizing vibration and noise [6–8].However, few studies have sought to quantify theExperimental Investigation of Flow and Force,,01.08.1991· Experimental Investigation of Flow and Force Characteristics of Hydraulic Poppet and Disc Valves Show all authors. D N Johnston, BSc, PhD 1. D N Johnston . School of Mechanical Engineering, University of Bath See all articles by this author. Search Google Scholar for this author, K A Edge, BSc, PhD, CEng, FIMechE 1. K A Edge . School of Mechanical Engineering, University of Bath See all,Structure Parameters Optimization Analysis of Hydraulic,,In order to improve the impact performance, the structure of hydraulic hammer should be optimized. In this paper, the ranges of eight vital structure parameters of piston and reversing valve system of hydraulic hammer were selected firstly; and then found the best value of different parameters under experiments with the method of computer optimization and the parametric analysis method,
Modeling simulation and parameters optimization for,
28.06.2018· [1-7]. The main structure includes hydraulic impact piston, reversing valves, anitrogen room and other basic part. In the process of the hydraulic impactor’ optimization design, the optimization of the hydraulic impactor’s performance parameters (such as impact energy and impact frequency) is the key point. Finding the relationship between performance’s parameters and structure,Electrohydraulic Valves A Technical Look,maintain the hydraulic bridge balance.The supply pressure should be set so that the pressure drop across the valve is equal to one- third of the supply pressure.The flow capacity should include the continuous pilot flow to maintain the hydraulic bridge balance. Direct Drive Valve performance is constant no matter what the supply pressure.Therefore,they are good in systems with fluctuating,Research on Yaw Stability Control of Unmanned Vehicle,,14.04.2020· Research on Yaw Stability Control of Unmanned Vehicle Based, servo motor unit and hydraulic control unit. Aiming at the dynamic instability problem of intelligent unmanned vehicle, a three-layer vehicle yaw stability control structure including decision layer, distribution layer and execution layer is proposed based on integrated EMBB. Firstly, the decision layer calculates the ideal yaw,Modeling and identification of a solenoid valve for,01.03.2009· The fully variable valve actuation in combustion engines can be mentioned as an application of PWM-driven hydraulic switching valves which improves the performance and efficiency of the en- gine [14]. Dynamic characteristics of fast switching solenoid valves influence the successful operation of the entire fluid power system. Therefore, it is of critical importance to elaborate a reliable,Vibration analysis and control technologies of hydraulic,,01.04.2021· A high-performance piezoelectric valve was used as the secondary path actuator in terms of its fast response and wide bandwidth. The schematic diagram of active control system was shown in Fig. 46. 140 The prototype of the piezoelectric actuated valve was shown in Fig. 47. 140 The flow rate can be modulated by adjusting the distance between the moving plate and the stationary plate, andHeinemann Hydraulic-Magnetic Circuit Breakers,and concentrated on research-ing electrical protective devices. In 1927, Heinemann developed an automatic protective device called a circuit breaker, and in 1930, Heinemann produced the first magnetic circuit breaker. Until then, circuit breakers depended on the heat caused by an electrical overload to trip the circuit open. Too often, breakers tripped unnecessarily, such as on a hot day or,
Hydraulics Trouble Shooting Guide - Advanced Fluid Systems
1. cooling performance of the assembly (or installation) insufficient in relation to the installed power or the operating time. 2. pressureless circulation not provided (or does not switch on) during long working breaks (with pump still running) 3. insufficient hydraulic fluid in the installation 4. coolant valve fails to switch 5. thermostat set too high 6. coolant not switched on or no,Experimental Investigation of Flow and Force,,01.08.1991· Experimental Investigation of Flow and Force Characteristics of Hydraulic Poppet and Disc Valves Show all authors. D N Johnston, BSc, PhD 1. D N Johnston . School of Mechanical Engineering, University of Bath See all articles by this author. Search Google Scholar for this author, K A Edge, BSc, PhD, CEng, FIMechE 1. K A Edge . School of Mechanical Engineering, University of Bath See all,Modeling and Analysis on Cushion Characteristics of,01.01.2016· The optimization of cushion structure is presented in Section 4 to promote the performance of hydraulic operating mechanism. Finally, some conclusions of the work are drawn in Section 5. 2. System Structure and Principle The principle of one fast and high-flow-rate hydraulic cylinder in one certain type of 1100 kV UHV circuit breaker is shown in Figure 1. The whole hydraulic system mainly,,,,
