Adjustment of forklift chain. Most of the chains on the gantry of today's forklift trucks are double-chained, with two types of blade lifting chains and sleeve stick chains. The structure is as follows: lamellar lifting chain 1, hinge shaft 2, upper buckle 3, chain 5, pin 6, lower buckle; sleeve roller chain 1, chain 2, pulley 3, adjusting bolt 4, chain Fixing plate 5, fixing bolt 6, fork frame 7, adjusting nut. If the chain of the forklift is too long, the lifting height cannot meet the requirements; if the chain of the forklift is too short, it will cause a serious accident that the forklift runs out of the channel steel of the mast. The two chains are loose and tight, causing one chain to overload and eccentrically load, which will cause the fork frame and inner gantry to move unsteadily and inflexibly. The method of adjustment is:
1. Park the forklift on a relatively flat site, the mast is in a vertical state, lower the fork to the ground, and lift the hydraulic cylinder piston (plunger) to the bottom dead center.
2. Install the chain, one end of the two chains is connected to the fork frame, and locked.
3. Make the chain bypass the pulley, connect the other end with the lifting hydraulic cylinder flange or the outer mast beam, and adjust the length of the chain with hinge bolts.
4. Use your finger to press the chain with a force of 49N at a distance of 1000mm from the ground. The chain travel distance should be less than 20mm, and adjust another chain in the same way.
5. After adjusting the two chains, lift the fork and check the tightness of the two chains. The length should be the same.
For maintenance inspection, first of all, we must check whether the length of the forklift chain is consistent. If the length difference is greater than 5MM, it should be readjusted; the chain in the forklift accessories must not have cracks and deformations, and must be flexible to rotate, and the extension of each 20-section chain does not exceed 8mm If cracks, deformations and elongations exceed the specifications, they must be replaced; the wear of the chain pins must not exceed 5% of the original diameter. When the wear is excessive, bending, fatigue cracks, or serious corrosion should be replaced.
