Four Rope Grab

 The four cable grab is mainly matched with bridge or door cranes with two groups of lifting drums to grab various loose accumulation for loading and unloading, stores transfer and so on. According to material conditions and client requirements, serial product types as toothed, parallel cross beam opened and underwater operations can be designed.

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Wire Rope Electric Hoists Inspections

  1.Wire rope electric hoist motor temperature rise is too high. First of all, check whether the  wire rope electric hoist  is overloaded. The overload causes the motor to heat up. Then check whether the motor bearing is damaged or not, and whether the motor works according to the regulations. When the motor is running, if the brake clearance is too small, will generate a large frictional force. The frictional heat also increases the additional load. 2.Wire rope electric hoist can not start after heavy objects rise to mid-air, or after parking can not re-start. First check if the system voltage is too low or the fluctuation is too large. If it is, restart it only after the voltage returns to normal. On the other hand, if it cannot be started after stopping, pay attention to whether there is a phase loss in the operation of the three-phase motor. 3.Can not stop working. The power should be cut off immediately, the wire rope electric hoist should be forcibly stopped, and the repair the c
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Crane hook rotation causes and preventive measures

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  Crane hook rotation causes and preventive measures for your reference to make your   crane operation   more safety and efficient. Check Dongqi crane operation tips to prevent crane hook rotations now. Dongqi your crane specialist at side. 50 ton crane hook for sale What is crane hook rotation? Crane hook  rotation is often happening without any warning occurred in the lifting motion, when the crane is lifting some weight, crane hook rotates, the wire rope between hook and pulley twisted together, so it will be the lifted weight, then the lifting operation have to be mid-stop. Crane hook rotation can affect the lifting operation, seriously threatening the safety of workers and equipment, therefore it must be avoided. Crane hook rotation causes The cause of crane hook rotation is mixed with the internal and external factors of crane. The internal cause is indeed the root cause of its occurrence. Internal factors to crane hook rotation Crane wire rope regardless of model, specifications
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JM Series Electric Winches

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  JM series electric winches is a gear reducer type drive type winch, which is mainly used for handling materials under 10 tons. JM electric winches can be used to hoist, pull, load and draw heavy weights. It also can be applied to various large and medium concrete structure and the installation and disassembly of mechanical equipment. JM Series Electric Winches are suitable for the civil construction and installation project in construction and installation company, mine lot and factory. JM series electric winches
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