Papers by Keyword: Hydraulic Support

Abstract: In this paper, Solid works software and finite element analysis software ANSYS workbench combined for ZY10000/26/55 type two columns shield large mining height hydraulic support top beam finite element modeling, through the mathematical model analysis to determine the mechanical load, and then using ANSYS software to analyze the stress and displacement law by three conditions: both ends of the beam in concentrated load, unilateral loads and torsional loads. In this way, we know the stress and displacement of hydraulic support beam after the distribution of load, for stress concentration, which make rationalization proposals on large mining height hydraulic support design, we recommend reinforcing ribs, increasing cover thickness or using higher strength material (Q460) and providing a reference in other measures to improve the strength and stiffness of the hydraulic support top beam.

Abstract: Adopt a PLC controller as the core and combined hydraulic supports CAN bus technology to build electro-hydraulic control system, the composition and working principle of hydraulic support electro-hydraulic control system will be described; according to the control system control requirements to achieve a single frame single action moving, single rack sequential linkage, group exercise, shearer position detection and the overall program design, while the stent control system software and hardware design. Verification shows that the system is able to achieve its basic functions. Reference to automate the development of the growing coal mine hydraulic support electro-hydraulic control system.

Abstract: To get the maximum coal in front of the working face of the 17# coal seam, we installed a longer beam which is 1.2m in length in the leading end of the original working face supports ZF3000/17/28, and know that working face supports’ setting load and working resistance are lower .We changed the original supports with shield supports ZY3800/15/33 that are adaptable in the geological condition and got the favorable affection.

Abstract: Based on theoretical calculation, virtual prototype technology and the method of finite element analysis, the fully mechanized hydraulic support is designed and simulated. Firstly, the four-link mechanism of hydraulic support mechanical model and mathematical model are established, the demission is confirmed by design calculation of structure. Secondly, through the establishment of rigid parameterized virtual prototype model of the system, dynamics simulation analysis and research is finished based on ADAMS on the mechanical properties. Finally, based on FEA, the modal calculation of key components is completed by using ANSYS.

Abstract: The reliability of formwork support is directly related to gob-side entry retaining success. In this paper a dual function of supporting and filling formwork support is designed. Use SolidWorks software build 3D modeling and virtual assembly, The establishment of a movement model of the anti-four-bar linkage formwork template using numerical methods and get the motion trajectory of the roof. It has been verify that the anti-four bar linkage design of the hydraulic support is feasible.

Abstract: Hydraulic support is widely used under the mine while the pressure is the most important factors of its safety.In view of the defects about present pressure monitor of mining hydraulic support ,designing a mining hydraulic support pressure monitoring system based on LabVIEW.This article mainly introducing the overall structure of the system, hydraulic system principle, the LabVIEW program, data communication and interface design.Using LabVIEW collection and storage support’s real-time pressure information. On the basis of the single chip microcomputer and the LabVIEW for data processing and display, improving the real-time control of hydraulic support.

Abstract: The mechanism of four-bar linkage for the 8m hydraulic support is designed and optimized with the help of graphing method. The 3D model of the 8m hydraulic support is created using the software Solidedge. The virtual prototype is built in the circumstance of multi-body dynamics analysis software Adams. The dynamic simulation is made for the hydraulic support from the maximum working height 8 meters to the minimum working height 5 meters. The movement trail of the front point of the hydraulic support is obtained which can explain and demonstrate the performance of the four-bar linkage. Meanwhile, the displacement, velocity and acceleration curves of the gravity center for the major components including the top beam, shield beam, front link and rear link are discussed.

Abstract: The hydraulic support is mainly used in roadway and workplace for supporting and protecting in mining industry. The hydraulic support would appear the situation of declining, dumping and crowding on greater tilt angle mining face, these will threat the safety of the workplace, the safety of mining face is the key to the safety in production. This paper analyzes the reasons of declining, dumping in static force, gives respectively the angle range of working surface hydraulic support declining and dumping, proposes some relevant measures of the hydraulic support declining and dumping.

Abstract: Electro-hydraulic control system of hydraulic support in addition to being able to control the basic movements of hydraulic support, also can work for signal acquisition of mining environment, including pressure of column pressure, displacement of push lutetium and pull support etc. The electro-hydraulic control system is presented in this paper, on the basis of the original control function added signal acquisition module, and designed the hardware and software.

Abstract: In the fully mechanized coalmining face, all the main hydraulic supports have the four-bar connecting rod. The design of the four-link mechanism is an important part of the modern hydraulic support design. This paper has analyzed the hydraulic supports four-bar connecting rod design process according to the deflective mount of the top beam. Simplified support model has written kinematic and mechanical equations of the four-bar type hydraulic support. This paper has proposed a method which can design the four connecting rod of hydraulic support based on matlab and solve nonlinear equations of kinematics, and has compiled into a visual computing program. Gives an example of the design requirements, applying this procedure design and calculation parameters of the hydraulic support, and using the AutoCAD drawing to verify results, calculation results are correct. The program improves efficiency of the hydraulic support design. The application of this procedure can be repeated, variables are modified until getting a satisfactory design results.