查询词典 hoist

Based on the double-loop DC motor speed automatic control system works, the paper design and research the coal mine hoist DC converter system.

本文根据直流电动机双闭环调速自动控制系统的工作原理，对煤矿矿井提升机直流调速系统进行了设计和研究。

In this paper,we analysed the problem of the analogue electric control system which was adopted in the shaft hoist in Zhangji coal mine,and put forward the scheme of technical reconstruction by using the digital analogue circuit system.

针对张集煤矿提升机电控系统由模拟电路改造为数字系统，由原有模拟电路所存在的问题入手，分析了其问题所在，并提出了改造方案，从而从根本上解决了原有的问题，数字电控系统具有可靠性高、稳定性好等优点。

Coal mine hoist ; low frequency drive system ; intelligent

矿井提升机；低频拖动；智能控制

Wire rope is an important component of hoist equipment in Coal Mines, accidents caused by rope broken frequently occur, which make incalculable economic loss to Coal mine industry and the Nation, and the problem must be highly focused on by mine safety managers.

钢丝绳是煤矿提升设备的重要构件，因钢丝绳断绳引起的重大伤亡事故频繁发生，给国家、煤矿造成不可估量的经济损失，这是值得煤矿安全管理人员高度重视的问题。

Expounds that using frequency control system has higher working efficiency , safety reliablity and economic results than using resistance speed control system before in coal mine shaft hoist, and may be clearly overcome a lot of its disadvantages.

阐述采用隔爆兼本安型四象限变频调速系统，可明显克服矿井提升电机采用传统的电阻调速控制中出现的诸多缺点，提高系统的运行效率和安全可靠性，大大提高经济效益。

This paper briefly introduced the situation of transformation concerning the low-pressure brake power of the hoist in suoli coal mine.

简要介绍淮北矿业集团朔里煤矿主井提升绞车低压制动电源改造情况。

Stamping plant currently seeking to expand their business partners, contract various stamping, welding pieces of the manufacture and production of various models of coal washing machine host and hoist bucket chain, belt transports all kinds of roller, such as stents.

目前冲压分厂为扩展业务寻求合作伙伴，承揽各种冲压、焊接件的加工制作，同时生产各种型号洗煤机主机及提升机斗链，皮带运输机各种托辊、支架等。

The scheme design and recovery evaluation of low calorific value coal from gangue ;2. Research of switched reluctance motor control system for coal gangue hoist;3. To avoid wasting of coal resource,mitigate mixing of gangue into coal and raise benefit of mine,it is decided to carry out feasibility study of dry dressing of gangue -containing coal.

霍林河1#露天矿煤层赋存条件复杂，采用大型设备有绝大部分薄煤层无法分采，而造成煤炭损失，为了降低煤炭资源的浪费、减少矸石混入、提高煤矿的经济效益，决定对杂煤进行干式分选的可行性分析研究。

The equipment uses upper/lower rotary chain-bucket to hoist coal from carriage to certain height and unload the coal onto horizontal strap, and then the coal is unloaded onto inclined strap machine, which cast the coal to one side of the railway.

该设备是利用上下回转链斗，将煤从车箱内提升到一定高度卸在水平皮带机上，而后转卸至倾斜皮带机上，由倾斜皮带机将物料抛置轨道的一侧。

About 300T road repairing, we will continue perform. TIMAS can use the 300T crane to hoist coal mill for about 1 or 2 days, which needs acceleration. Before plate girder lifting, cranes need to be changed the lifting condition and check.

关于300t 路面修整，我方会继续修复。300t 吊车 Timas 还可使用1-2天吊装磨煤机，但需要抓紧时间，大板梁吊装前，吊车需要改工况及检修。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。