Manual chain lever hoist introduction

Manual chain lever hoist is widely used in shipbuilding, electric power, transportation, construction, mining, telecommunications and other industries equipment installation, lifting items, mechanical stretch.
Manual chain lever block has the advantages of safe and reliable, durable, good performance, easy maintenance; small volume, light weight, convenient to carry, small manualforce, high efficiency, improve the structure, beautiful appearance. manual hoist is used to enhance the weight of manpower, not arbitrarily extended operating manualle; operation should allow the rest of the manualle freely with the move, not blocking. Must be based on the load to choose the appropriate tonnage of the chain lever block.

With the provisions of models, specifications of the steel wire rope to fix the chain lever hoist. The material of wire rope hoist is generally metal synthesis, so the maintenance must be done in a comprehensive, so that the normal use of the device will not be affected. Usually driven by the cone rotor brake, the weight is generally 0.1 ~ 80 tons, lifting height of 3 ~ 30 meters. manual chain lever block in addition can be used alone, but also with the manual or electric trolley moving chain assembly together, hanging on the roof of buildings or the crane beam.

Under special circumstances, when the manual chain lever hoist is used for lifting the cage, the lifting weight of the hoist should be reduced to 1/3. You must check housing every fastening screw is tightened or not; pulling various manualle check action is normal or not; if the operation coordination, no abnormal noise or card, wrenched loose unload manualle, penetration have been wiped clean of supporting steel wire rope, and the steel wire rope is clamped and pulled forward or backward manuscripts manual, depending on the action is normal before use.

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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

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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

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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

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