跳至主要内容

The use and maintenance of manual lever hoist

Usage method
1.Select the appropriate size of the manual lever hoist to use, no overloading.
2.Do safety check and no-load test before using the manual lever chain hoist, according to the actual requirements of reasonable adjustment under the hook position.
3.Hook adjusting method: flipping a shifting block, the shifting block in the N position, anticlockwise pull out the hand wheel. At this time, the clutch is in open state, pull the chain can easily adjust the position of the hook, and after the end of the adjustment should be clockwise rotate the handwheel to ret.
4.After adjustment the weight hanging in the middle position under the hook, the handle can achieve weight lifting.
Maintenance method
1.After use the manual lever hoist should be cleaned, and coated with rust proof grease, stored in a dry place.
2.The maintenance and repair should be carried out by the professional staff.
3.Gear installation according to the drawing operation.
4.When the groove type nut is installing, the hand wheel is rotated in a clockwise direction so that the ratchet wheel and the friction plate are pressed on the brake air seat, then install the groove type nut.
5.Manual lever chain hoist after cleaning inspection and maintenance, should carry out no-load and heavy load test, to confirm the normal work, automatic and reliable. The friction surface of the brake must be kept clean, no pollution of sewage sludge.

评论

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

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

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