带式输送机软启动装置液压控制系统组合式数字阀的研究与设计_图

1、 economic and social benefit. 【Descriptors 】Fixed rope clip Hori-zontal turning Passenger-carried telpher Development Application Innovation to Hydraulic System of Ore-Drawing Machine in Trans-verse Gallery Based on PLC.WA NG Jiansen et al.(53-54Com bining practical working condition, the paer condu

2、cted innova-tion to the hydraulic and electric-controlled system of ore-drawingmachine in transverse gallery of certain mine. Proportional directionvalve and position sensor were applied in the hydraulic system torealize the continuous regulation for valve opening, and urgent valvew ere added into t

3、he hydraulic system, PLC control system was appliedin the elelctric-controlled system. Thus, the reliability and automatiza-tion level enhanced after innovation. 【Descriptors 】Hydraulic sys-tem Ore-drawing machine PLCAnalysis and Simulation to Variation of Parameters of Containerin Twining Type Hois

4、t.TIAN Shixiang(68-70By conversion of hoisting container with mass of wire rope and calcu-lation of transient stiffness of wire rope, the paper established themathematical model for variation of parameters of wire rope andcontainer system of hoist, and the hoisting simulation model withacceleration,

5、 deceleration and even velocity control model based onM A TLAB/Simulink was founded also, thus, the working parametersof JK-3/30 hoist was simulated and the properties parameters duringwhole operation course was achieved. 【Descriptors 】Hoist Para-meters variation SimulinkStudy to Calculation of Drag

6、ing System.XIE Lirong et al.(73-75A ccording to the characteristic of draging system, the paper suggestedthat three kinds of checking computations and validation should beconducted while calculating the draging system, which were anti-skidding checking computations at urgent braking, skidding che-ck

7、ing computations at special circumstances and over-loading statictest at checking the draging ability. As the three circumstances weresatisfied simultaneously, the designing calculation to draging systemwas correct, safe and reliable. 【Descriptors 】Draging calculationAnti-skidding criterion Skidding

8、 criterion Over-loading static testInnovation to Tail Rope of HSCE× Friction Hoist .LI Zhenguo(75-76By the analysis to each parameter of tail rope device of HSCE 2×8friction hoist, the paper found the cause of frequent malfunction intail rope device, and made out the innovation scheme, the

9、 implem entary effect was obvious. 【Descriptors 】Hoist Tail rope M alfunction InnovationStudy to System for Processing Data of Mine-Used Wire Rope.CHEN Jian et al.(76-77To well conduct safety appraisement to mine-used wire rope is thenecessary technical duty for colliery enterprise to product safely

10、 andim prove economic benefit. The paper introduced domestic safety in-spection standard and approach instituted lately for mine-used wirerope, based on which, it established kinetic and computer model. Inaddition, it briefly described the necessity to develop the system forprocessing the data of mi

11、ne-used wire rope, main function and struc-ture of main database, finally, it briefly introduced the successfulapplication of the system in wire rope inspection center of ShandongUniversity of Science and Technology. 【Descriptors 】 Wire ropeinspection C o n t i n u o u s C o n v e y o r sRealization

12、 of Remote Distributed Control System Based on MO-DEM .FENG Xiaoying et al.(82-84MODEM and DF1 communication protocal were used to realize interlinkage of DH-485 local area network, which constituted the remote distributed control system to control 11 kilometer long multi-belt conveyor, and the stru

13、cture and control scheme were provided.【Descriptors 】M ODEM Belt conveyor Remote communication Distributed control systemModeling and Simulation of Motion Law of Ball Valve in Recipro-cating Diaphragm Pump .XIAO Junjian(84-86The paper established the mathematical model for simulating the mo-tion law

14、 of ball valve in reciprocating diaphragm pump, the modelsolved the problem of singular point in motion equation that de-scribed the lifting stroke was zero at start and close stage of ball valve,which made the model more perfect. In addition, the paper workedout the simulation program, and conducte

15、d the simulation test to ZGL50/135-K140-2SM350HD soft pipe diaphragm pump. Finally, itcompared the simulative result and testing result, which equaled approxim ately. 【Descriptors 】Reciprocating diaphragm pump Ballvalve Motion law Mathem atical model Simulative testStudy and Design to Combined Digit

16、al Valve for Hydraulic Con-trol System of Soft-Start Device in Belt Conveyor.SHI Yanping et al.(87-89In order to improve the control precision and reliability of liquidviscous soft-start device of large scale blet conveyor, the paper de-signed a kind of combined electro-hydraulic digital valve. The

17、valveconsisted of several switch valves based on liquild pulse modulationtheory. It possesses the advantage of strong anti-pollution ability,sim ple structure and low price, and is suitable for application of electro-hydraulic servo system controlled by computer in some large scalemining machinery e

18、quipment such as long distance belt conveyor.【Descriptors 】Belt conveyor Soft-start Combined digital valveC r u s h e r s & G r i n d e r sDevelopment Trend and Innovation Point of Cement Grinding Technology .ZOU Weibin(92-95The paper dissertated the different cement grinding technologies andthe

19、ir application in practical production, discussed the point in inno-vation to tube mill with pretreatment process, analyzed the technicalcharacteristic of different grinding technology and development trendof grinding technology. 【Descriptors 】Grinding technology De-velopment trend Innovation pointC

20、urrent Study Direction and Status of Homemade Classifying Crusher .GAO Youmao et al.(95-97The paper analyzed the current study status of homemade classifyingcrusher on crushing theory, structure style, crushing tooth design,layout of crushing tooth, anti-abrasion technique etc., and indicatedthe fut

21、ure study direction. 【Descriptors 】 Classifying crusher StudyCurrent status DirectionDesign and Malfunction Disgnosis to Status Monitoring System forBall Mill .GAO Lihuan et al.(98-100A ccording to the transmission system of ball mill, the paper designedthe vibration monitoring system for ball mill, the analysis to time-domain of signal and the analysis to frequency-domain of signal was combined to make vibration monitor and malfunction diagnosis forball mill. The test and analysis result well reflected the actual wo