机械装置

Digital clock is a kind of modern calculagraph which is composed of digital integrated circuit and can show decimal digital. Compared with mechanical clock, it is exact and can be see frankly. It is very popular in some public places, such as station, airport.

数字钟是用数字集成电路构成的、用数码显示的一种现代计时器，与机械表比，它走时准、显示直观、无机械传动装置等特点，广泛应用于车站、码头、机场等公共场所。

Digital clock is a kind of modern calculagraph which is composed of digital integrated circuit and can show decimal digital. Compared with mechanical clock, it is exact and can be see frankly. It is very popular in some public places, such as station, airport.Keywords: Multisim2001; Circuit Simulation; Digital Circuit; Answer Bell

数字钟是用数字集成电路构成的、用数码显示的一种现代计时器，与机械表比，它走时准、显示直观、无机械传动装置等特点，广泛应用于车站、码头、机场等公共场所。

These machines have guard devices with interlocks to ensure they cannot be opened while the machine is in operation or while any parts are in motion.

这些机械设备都会安装联动装置以保证机械设备在进行运作的时候门不能被打开。

On the base of studying the Bend Pipe Machine 's work principle, the PRO/E software was adopted, and the STAR-03W single-modulus Numerical Control Bend Pipe Machine was designed, including the bending axis and bending arm, Y-B assembled part, adjusting equipment and the lathe bed and so on.

本文在研究弯管机工作原理和机械结构的基础上，采用 PRO/E 技术，设计了STAR-03W 单模数控弯管机的机械结构，包括弯曲轴、弯曲臂、Y-B 向组合机构、调整装置和床身设计等。

Applying the software ADAMS for dynamic simulation and Pro/E for three-dimensional design creates the mechanical system of virtual prototyping model of the 200t crawler crane. The models of the drag bar, the spring backstop, the luffer rope and the crawler in the system are established well by ADAMS/View module. The dynamic simulation of the complete mechanical system is researched at series of work condition, which occurs possibly the crawler crane boom backward tipping as the crawler crane unloads suddenly.

本文应用虚拟样机技术动力学仿真软件ADAMS，结合三维实体设计软件Pro/E构建了200t履带起重机的虚拟样机机械系统模型，并利用ADAMS/View模块完善了系统中拉板、弹簧式防后倾装置、变幅钢丝绳和履带模型：研究了履带起重机突然卸载时可能发生臂架后倾的一系列工况下，整机机械系统模型的动力学仿真。

Mechanical transmision devices of any control system have some elastics This Ki- nd of mechanical resonant frequency produced by the elasticity is usually higher and it's far away from the mediumfrequency domain sensitive to dynamic characteristics, so the resonant effecr on the system can be neglected.

任何控制系统的机械传动装置都有一定弹性。通常，这种弹性形变所产生的机械谐振频率&较高&，远离对系统动态品质敏感的中频段，谐振对系统的影响可以忽略。

Loggings on seven horizontal cased holes are made by the protection method, and the result shows that all the logging data are first-rate.

在此基础上，研制了测井仪器机械保护装置，采用国产仪器和使用机械保护法在7口井上进行多次水平套管井固放磁测井，测井资料优等品率均为100％。

Turning the dish drives to usually adopt the machine method,because the machine drives of spreading and moving the chain is long,spreading to move the parts many,spread to move the device complicated,on the some special artesian well equipments,will often appear whole machine set arrange the difficult circumstance,and host weight over big,affect the host moves to carry function.

0前言转盘是钻机或修井机旋转系统的主要部件，把发动机的旋转运动通过减速机构变为垂直旋转运动。转盘驱动通常采用机械方式，由于机械驱动的传动链长，传动部件多，传动装置复杂，在一些特殊的钻井设备上，常会出现整机台面布置困难的情况，且主机重量过大，影响主机的移动性能。

From water to silt to various kinds of dust particles, wam also has abundant experience to offer the most suitable speed of transport and special lubrication and seal installation. as the world-famous dust and particle equipment manufacturers, wam group has the output of more than 25000 screw conveyer, this make it become the dust particle technological authority and one of the biggest equipment supplier in the world; wam was entered and stationed in china through the hong kong agent in 1996, established wam bulk handling machinery co., ltd. in 2000, established the wam bulk handling machinery international trading co., ltd.(all selling operation in china of the products are charged by this company) in 2002, meanwhile, wam has other co-partnership companies in china.

从水到淤泥到各种粉尘颗粒，wam都有丰富的经验提供最合适的输送速度及特殊的润滑和密封装置。wam集团每年25000多台螺旋输送机的生产量使其成为世界上粉尘颗粒螺旋输送的技术权威和最大的设备供应商之一。1996年wam通过香港代理商进驻中国， 2000年成立了全资子公司威埃姆输送机械有限公司、2002年成立了威埃姆输送机械国际贸易有限公司（由该公司负责威埃姆集团的产品在中国的全部销售业务），同时，wam在中国还拥有其他合资公司。

According to the summary for the snowploughs abroad at present, this paper points out the grgonomics problems such as the field of vision,seats of driver,attached snow and steering devices,and puts forward the improvement measures for a reference of technical personnels engaged in designing and manufacturing of snowploughs.

通过对目前国外除雪机械的综合论述，指出作业人员操作视野。驾驶员座椅、机身附雪及转向装置等人机工程方面存在的问题，提出改进措施，供我国从事除雪机械设计、制造人员参考

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。