The choice of steel wire rope and the maintenance

by:SanTong     2021-02-04
When choosing rigging specifications, must take the lifting load of size, weight, shape, and prepare lifting methods such as the use of common influence coefficient into consideration, given the limits of the requirements of the work force, the work environment at the same time, the kinds of load must be considered. Must choose to have enough ability, and can satisfy the use of appropriate length of rigging, if multiple rigging by using lifting load at the same time, must choose the same type of rigging; Flat rigging of the raw materials cannot be affected by the environment or load. Whether attachment or soft lug need, must be considered the end of the rigging and auxiliary accessories and lifting equipment matching. The restrictions on the use of Angle to swage wire rope when using soft lug flat sling, minimum use of lug length cannot be less than 3. Five times the maximum thickness, and lug contact part of the hook and lug Angle should not exceed 20 °. When the connection with soft lug slings and lifting equipment, slings and lifting gear contact part must be always, unless the axial line width is not more than 75 mm, lifting accessories axial and bending radius must be at least a sling width of 0. 75 times. For example: on the radius of the sling in cargo hook at least 0. 75 times the sling axial width. Fabric width may be affected by cargo hook part inside radius, cargo hook curvature results the influence of block strength in the range of the width of the fabric a balanced role. Coefficient of sling it is strictly prohibited to overload, it is necessary to use the right way, the way of part of the limit of the work force may have been given on the label, multiple sling cannot exceed Angle and vertical direction. In a word, should according to the characteristics and operation situation of the equipment, select the appropriate wire rope, it is safety and prolong service life and improve the economic benefit. The maintenance of wire rope: ( 1) Run the wire rope in the process of running speed should be stable, shall not exceed the load operation, avoid shock load; ( 2) Maintenance in manufacturing has been coated wire rope enough fat, but after running, fat will be reduced gradually, and the surface of dust and debris, wire rope, wire rope and the rope wheel wear and caused the rust, therefore, should be regular cleaning and refueling. Simple method is to use steel wire brush wipe off the dust on the surface of the steel wire rope and other corresponding tools such as dirt, melt heating of the surface of the steel wire rope grease evenly smear on the surface of steel wire rope, also can take 30 or 40 oil spray water on the surface of steel wire rope, but don't spray too much and pollute the environment; ( 3) Check record of use and make the wire rope must be inspected periodically and regularly check the content in addition to the above cleaning refueling, should also check the wire rope wire rope wear, broken wires, extent of corrosion and jig, the suspension loop, the components of various types and groove lubrication and wear condition. Found the abnormal situation must be timely adjustment or replacement.
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