煤矿技师考试题

With machine repairman exams

1, the steel strip machine maintenance overhaul operation order of protection?

A: (1) the protection of flexibility checked one by one. (2) identify problems in time. (3) maintenance records left.

2, the underground repair electrical equipment, are not allowed to charged overhaul relocation of electrical equipment, but not fire operations why?

A: prevent sparks caused by gas explosion.

3, automatic parking security device installation location is the limit?

A: from the servant section two meters in front of the end of the installation.

4, coal unloading port should be installed?

A: the coal unloading port should be installed to prevent officers crashed into the coal bunker facilities, the installation of the protection device Mancang.

5, strip machine running speed shall not exceed the number of meters per second?

A: the strip machine running speed per second shall not exceed no more than 1.8 meters.

6, the strip above or below the staff at what signs should be located?

A: The strip above or below the staff should be located at the lighting or sound and light signals. 7, what protection should be located anywhere in the strip head-to-tail?

A: the steel strip nose to tail anywhere outage protection device should be set up emergency lights.

8, the plug length of the wire rope is not less than the number of times the rope diameter?

A: The length of not less than 1,000 times the diameter of the wire rope wire rope connectors.

9 should be set to the coal feeder belt conveyor between the device?

A: to interlock device shall be located between the coal feeder belt conveyor.

10, the distance between the high and low voltage cables should be greater than the number? A: underground, low-voltage cable to be located in the same side of the roadway, the distance between the high and low voltage cable should be greater than 0.1 m.

11, automatic parking security device installation location is the limit?

A: The installation location is at a distance of the servant sections not end in front of 2 meters installed.

12, strip belt out with the main reason?

A: steel strip the machine belt out with the two main reasons: (1) Belt local overload (2) Tuosheng-round damage.

13 maintenance personnel with drag rope round ride steel strip machine needs attention?

A: drag sheave rope tied fixed in personnel-carrying hand neck stabbing incident in order to avoid running round.

14 for steel strip machine rope belt?

A: strip machine rope belt must remain intact, reliable, must be designated time and maintenance, and maintains records.

15, for the the belt maintenance personnel requirements are those?

A: and strip belt maintenance staff on duty that's constantly checking found hidden in immediately.

16, the belt conveyor and what protection should be installed?

A: (1) overspeed protection. (2) over-current and under-voltage protection. (3) protection of wire