问题 问答题 简答题

磨机正常工作中,如何进行维护?

答案

参考答案:

在磨机起动前需检查轴承、传动设备,包括筒体连接螺栓以及大齿轮连接螺栓及出料输送设备等,并清除磨机周围有碍运转的杂物和检查安全设施,开机时要按“出料输送设备→磨机→喂料设备”的顺序进行启动,停机时则按相反顺序进行。

在运转期间应严格遵守操作规程,做到:经常注意减速机齿轮啮合声音及筒体运转声音是否正常,检查轴承润滑情况及轴承温度是否正常,经常检查电动机的温升和电流,检查传动设备的运转情况;磨机停运后,检查主轴承、中空轴、筒体及减速机等重要部件的连接情况及磨损情况,发现问题及时处理。

正常操作维护工作中,润滑油的选择、使用、保管是很重要的工作。因为润滑油的作用,可以避免机械零件表面直接接触,;减少摩擦阻力,减轻磨损,同时利用油的导热性能可传递因摩擦所产生的热量,故应该保持润滑油清洁和一定的粘度,同时要保证油量充足,流动畅通。

若需要较长时间的停磨,应把钢球倒出,避免筒体弯曲变形。寒冷的地区,冬季要将轴承冷却水放出,以免冻裂。

阅读理解

We Love Gadgets(小配件)

If you love the latest gadgets or you want to be the next James Bond, come to Gadgets in the Garden Shopping Mall.

Gadgets is a cool new shop. It sells all the latest gadgets and toys from MP3 players and cameras phones to toy robots. It's a great place to go to check out the latest things.

Jon Lee and his best friend Tom Green own Gadgets. They love gadgets and toys very much. They are already running a successful Internet shop but want to give their customers a chance to play with all the latest gadgets before they buy.

Jon says, "Tom and I are always buying the latest gadgets. We love new ideas and we know that our customers love them too." They both think their new shop will be a big success and we think so too!

Gadgets opens at 9 0'clock on Wednesday August 1st, 2012. John and Tom are planning a fantastic opening. Don't miss it.

小题1: Where is Gadgets?

A.It's in a supermarket.

B.It's in a shopping mall.

C.It's in a garden.

D.It's on the Internet.小题2:What doesn't the cool new shop sell?

A.Toy robots.

B.MP3 players.

C.Camera phones.

D.ties.小题3:Who will probably (可能) to the new shop and buy things?

A.James Bond.

B.Jon Lee.

C.People who love the latest gadgets.

D.Tom Green.小题4:Why do Jon Lee and Tom Green open the new shop?

A.Because they want to make some money,

B.Because their Internet shop isn't successful.

C.Because they want to buy more gadgets.

D.Because they hope their customers can play with gadgets before they buy.

多项选择题