WOKAITE

In the process of electric hoist maintenance, we found some customers are not operating correctly in the using process, in order to make customers operate electric hoist correctly, following by  WOKAITE  to share how to use  electric chain hoist  safely: 1.Do not operate the electric hoist in explosive gas environment. 2.Stable and accurate button operation is required, do not operate button intermittently and fast. 3.Try to avoid excessive point operation. 4.Make sure that the motor is completely stopped before doing the reverse movement. 5.After  chain electric hoist  operation is completed, please let the controller cable and the hook in vertical static state, not swing or sliding. 6.When lifting, the load must be on average and close to the center in order to ensure the balance, do not lift the weight imbalance. 7.Do not use the  electric chain block hoist  to do the action of dragging the weight laterally. 8.Please do not lift while using the hook to hook the chain which blind

The hook is an important part of the  chain electric hoist , it not only bear the weight of the object, but also bear the impact load of rise and braking, so the hook material mechanical should have high strength and impact toughness. The commonly used hook according to the manufacturing process can be divided into forging hook and plate hook. The forging hook generally forged by 20SiMn, 36Mn2Si and other steel, while plate hook is forged by the multiple pieces of steel plate riveted joint, generally use 20# steel, 16Mn steel. The plate hook is convenient to manufacture, and the load can be uniformly distributed on each steel plate, and the fracture can not happen at the same time, so the reliability of the work is higher than the forging hook. Hook once broken in use process, can cause accidents. Therefore in use must pay attention to check, use a magnifying glass check whether there are cracks. Once found crack, immediately stop using. The hook dangerous section is the section of

1.Each  overhead crane  shall be marked with a nominal weight on the obvious place. 2.In the work, don’t allow people on the overhead crane, or transport people or with a hook. 3.No operating license and drink are not allowed to drive crane. 4.The operation must be focused, not talking, smoking, or something else. 5.The trolley needs to be clean; no place equipment, tools, flammable goods, explosive and dangerous goods. 6.Overload are not allowed. 7.Don’t lift any of the following circumstances: (a)Bundling is not strong; (b)Mechanical overload; (c)Unknown signal; (d)Diagonal pulling; (e)Objects buried or frozen in the ground; (f)Someone on the hanging object; (g)Flammable goods, explosive and dangerous goods without safety protection measures; (h)Too full of liquids (i)Wire rope does not meet the safety requirements; (j)Lift mechanism failure. 8.Crane moving on the line with no obstacles, hook or hoist and the bottom surface of the weight, must be lift 2m up above the ground. When mov

If the improper operation of electric hoist, will lead to what kind of consequences? The following is a detailed description for you by  WOKAITE . When the electric hoist is hoisting, the method of trolley operation is improper. Electric hoist will make the crane swing and lead to accident. Electric hoist crane hoisting, when the wire rope or chain tensioning should stop,  electric hoist hook  according to the direction of the shake again identify the hook, while lifting workers should check whether the weight hanging in prison; Not lift the electric hoist too fast, the lifting speed can be increased only when the lifting object is out of the obstacle; Objects hoisting by electric hoist should not be too high, generally exceeding 0.5m to the safe passage of the highest is good. When  electrical chain hoist  operation, if the conditions is allowed, it is best to lift off the ground about 0.5m, from the heavy lifting in the electric hoist behind the object, and under the command of

The  overhead EOT crane  active wheel and the speed reducer of the crane are running frequently, and many times of reverse and stop will cause the torque and vibration of the shaft of the reducer to increase, which is easy to cause leakage. The occurrence of such problems, the traditional method to repair machining or welding plating, but both have certain disadvantages: the thermal stress generated by welding and high temperature can not be completely eliminated, prone to bending or fracture; and brush plating limited by the thickness of coating, easy peeling, and the two methods above are repairing metal with metal, can not change the relationship of “hard to fit hard”, in the comprehensive function of the force, will cause wear again.  The latest maintenance methods is mainly use polymer composite materials, which has strong adhesion, and excellent compressive strength performance. Application of polymer materials to repair, not only no welding thermal stress effect, the thickness o

The DC disc brake of the electric  hoist motor  is mounted on the end cover of the motor shaft. When the  crane duty motor  is connected to the power supply, the electric hoist motor works at the same time. Because of the electromagnetic suction, attracts the armature and the compression spring, brake disc on the armature end cover is disengaged, crane duty motor running. When the power is turned off, the electromagnet electric hoist motor without magnetic force, the spring pushes the armature to the brake disc, the effect of friction torque, braking the motor stop immediately; our factory also produces the corresponding KDA050 dual speed motor.  Electric hoist motor  power supply by the rectifier in the motor junction box, and below 3 kilowatts to 4 kilowatts and above AC220V-DC99V, AC380V-DC170V (special time can also be in accordance with the requirements of the factory design such as (DC24V)),  KDA050  series electric hoist motor , can move quickly after the realization of motor po

1. CD1 type electric cable hoist  often moves on the I-beam track, the stopper must be installed at both ends of the track, to prevent the digression. The best is to assembly reliable elastic buffer or a rubber block at both ends of the wheel axle, the equivalent height of I-steel track, and I-steel track should not put out outside, if you really need to put some with rain proof device. 2.The I-steel track should be installed with grounding wire. If the grounding wire cross-sectional area of I-steel track is too small or not ground, when people contact hook, there is a risk of electric shock accident. So, the I-steel track grounding wire must be well connected, the general specification for flat 4-5mm diameter bare copper wire or a section of not less than 25mm, and should be inspected regularly. 3.Use the limiter and rope guide. The limiter limits the lifting of  electric cable hoist , can prevent the hook to rise too high or too low to crash drum, or down too fast pulling the wi