The 6 techniques to prevent electric Wire rope winch a short rope

1 Wire rope winch  and drum drum: nominal diameter and the wire rope diameter ratio shall not be less than 14; multilayer winding reel should be higher than the outer layer steel wire rope is 2 times the diameter of the wire rope should be flexible flange; strong electric winch rotating drum, drum wall should not crack or excessive wear; wire rope electric gourd drum rope end fixed device should be anti loose and self-locking function.
2 the end of the rope is fixed: wire rope electric hoist rope end fixed should be stable, reliable. The wire rope end fixed generally has 4 ways: the plate end of the rope must be firmly on the two ropes, and nut should be anti loosening device with joint; electric wire rope hoist metal pressing, joint should not crack; wedge when, should not loose, wedge sleeve should not crack; rope card, card mounted to the right direction of rope, rope clamp plate to press in force rope (not long rope, rope), and the number and distance shall conform to the requirements.
CD type wire rope electric hoist
3: to ensure safe turns electric wire rope hoist operation safety, work, crane reel should be retained for at least two ring wire rope as its security laps. The method is examined: super-low electric chain hoist  the hook into the lowest (usually ground), then check the security circle number, not including the tail rope a fixed number of laps.
4 rope retaining device shall be fitted with a device to prevent: pulley wire rope, rope retaining device and pulley clearance no greater than 1/3 the diameter of the steel wire rope. Can use visual inspection method, when necessary, can be measured by a ruler or vernier caliper.
5 wire rope and pulley pulley group: mainly used to change the direction of movement of the wire rope. First check the wire rope around the order correctly, wear and lubrication between the pulley, also check each pulley and rotation. In addition, also check each pulley flange has no cracks or damage, if any, must be replaced immediately.
6.Scrap and update  wire: wire rope should be good lubrication, no friction and metal parts; there shall be no kinks, crushed, bent, broken strands, cage shape distortion, core fracture phenomenon;

wire rope winch taboo chain hoist hook to use

Is a professional chain hoists, lever hoists, cranes and other lifting equipment line tackle manufacturers, the following are the details related news hook hoists used four taboo.  Chain hoists enough material with high strength hook, and made of high alloy steel liftech small electric hoist aterials, the fracture does not occur in use, a higher safety factor. However, the use of hook should note the following points:
1, chip hook does not allow splicing. 
2, hook surface and internal defects without affecting its usability.
3, prohibiting the use of cast hook, so casting internal defects difficult to find and eliminate.
4, prohibiting the use of manufactured or repaired weldment hook, so there may be cracks in steel welding.
Avoid stress points and liftech strong electric winch support points are too far away; parts subject to vibration loads to avoid friction force transmission; avoid considering only a single load transfer; should not affect the working parts are ignored when the deformation of the force distribution; under impact loading parts Avoid just too large; affected parts should avoid stress becomes too rough surface, as well as the residual tensile stress.