Electric wire hoist maintenance

Electric rope hoist is a small lifting equipment, has the advantages of compact structure, light weight, small volume, strong versatility, convenient operation and so on. It can be installed separately in I-steel, can also be fitted for use in electric or manual single girder, double girder, cantilever and gantry crane. Wire rope is the key component of the electric wire hoist lifting mechanism, it has a direct impact on safety of electric rope hoist, often scrapped because of abrasion and fracture, so should always in good lubrication condition, and regularly check the end is fixed or not. When the wire rope should be scrapped when reaches the circumstances specified in the GB5972, and timely replace the rope.

1.In daily inspection, monthly inspection and yearly inspection, which does not meet the requirements should be repaired, adjusted or replaced parts immediately.

2.Electric wire hoist maintenance requirements:

A) Replacement parts should be the same material and performance as the original parts, when maintenance;

B) When structures parts need welding, the material and and electrode and welding quality shall meet the quality standards of the original structure parts;

C) when the electric hoist is in working condition, maintenance and repairing is not allowed.

3.The main electric rope hoist wearing parts:

A) Guide rope device;

B) Sealing ring;

C) Brake ring;

D) High-speed motor shaft pinion.

此博客中的热门博文

How to deal with 3 ton electric chain hoist motor overheating

Any machine has the cycle and time of operation, is not suitable for a long time continuous operation. Long time operation will cause mechanical damage and even accidents, but in general if the 3 ton electric chain hoist surface temperature is too high, we need to check what is the reason. Firstly to check whether it is because the electric hoist weight is too large, beyond the 3 ton electric chain hoist rated weight. Overweight operation will make the motor over heating, overload for a long time will cause irreparable damage to the electric chain hoists for sale. Electric hoist motor is not overloaded, but still heating, should check whether the motor bearing damaged; Should also check whether the motor Work according to regulations, which is one of the reasons causing the motor heating. When the electric hoist motor is running, brake clearance is too small, not completely disengaged, causing great friction, while the frictional heating is also equivalent to the additional load

阅读全文

The reason of electrical wire rope hoist does not work after starting

Mainly because of the hoist does not reach to the rated operating voltage, there are generally 3 kinds of situations: 1.Find out whether the power supply system supply power to wire rope electric hoist , generally used test pencil, such as no power supply; 2.The main control circuit of the wire rope electric hoist is damaged, the line is broken or the contact is bad, can also let the hoist motor not be electrified. This situation, need to overhaul the main control circuit. When maintenance, in order to prevent missing phase to burn the motor casused by the main control circuit supply power to three-phase motor, or hoist motor suddenly operate and cause danger, must disconnect electrical wire rope hoist motor from the power supply, only supply power to the main control circuit. Then start and stop switch, check and analyze the working condition of the electric appliance and the line, repair or replace the failed electric appliance or line. When the main control circuit is confirmed

阅读全文

Working level of overhead gantry crane

Overhead gantry crane installation site and the work conditions is vary greatly, the use of lifting capacity and working frequency are also different. In order to use the crane economically and reasonably, it is necessary to choose the appropriate working level according to the working condition of the crane. The working level of the bridge crane is divided into A1 ~ A8, according to the level of the crane and the load state, that is, according to the frequency and load degree of the crane through the calculation to determine. The crane has a certain number of working cycles during its useful life. A working cycle of a travelling gantry crane is to start the process of loading the goods from the beginning to the next. The total number of working cycles represent the utilization of cranes. In order to facilitate the calculation, the total number of working cycles can be divided into 10 categories. 200-400 ton heavy duty travelling overhead gantry crane for sale

阅读全文

WOKAITE

搜索此博客