Forklift working device repair

Lpg Forklift Trucks‍ Chains and pulleys in maintenance, there shall be no crack and deformation of the chain sheet, need to be flexible rotation. Every 20 section chain elongation does not exceed the specified value (8mm). Wear chain pins shall not be more than the original diameter 5%, there shall be no serious bending, fatigue crack and corrosion. If more than the allowable situation, should be replaced. If pulley surface appears uneven wear, two pulley diameter difference is greater than 0.2mm, the pulley surface appear step or indentation, the influence of the chain in normal operation. Should be replaced.

The main, side roller in maintenance, inspection of main, side roller wear marks should be uniform. The wear limit along the diameter direction, main roller 1.Omm, side roller is 0.5mm. Or should be replaced. The inner, outer door frame in maintenance, inner, outer door frame requirements of flat, in length not straightness shall not exceed 1mm, limits the use of 3mm. Otherwise, should be repaired. Magnaflux, striking method to check for cracks. If have, should repair. Check that the deformation or distortion. When the bending deformation in the length range is more than 1.5mm, the transverse width difference is more than 1.5mm, more than 2.Omm of the bending deformation of an inner door frame roof, should be corrected. When the overall deformation is serious, the guide mouth size exceeds the limit of wear, should be scrapped. Inside and outside the door frame side rails on each side wear steps up to 2mm, should replace the rail or dressing after use.

The working device is assembled on the check and adjustment, first check and adjustment of the inner and outer door frame before and after the gap. Match and use of gap of roller 1mm following assembly. When assembling, the get fit clearance, operation lifting handle, so that the inner door frame, running, to run smoothly, roller rotation freedom, even; two is the inspection and adjustment of inner and outer door frame around the gap. According to the required size, adjust the installation position of the lateral roller with method of the pad, to ensure the clearance of the roller and the inner and outer door frame channel steel wall is worth to meet (the inner door frame top position is 0.1-1.Omm, the lowest position for the inner door frame 0.1-1.5mm); three is the fork frame around the gap adjustment, and inside, the outer door frame around the same gap adjustment, only the gap value everywhere are 0.1-1.Omm. All the good, the lifting fork, door frame, see whether smooth action. Decrease from the maximum height, inner door frame together with the requirements of air fork free fall. Otherwise, should be re adjusted; four is the lifting chain adjustment. Lifting chain is too long, lifting height is not up to the requirements; too short will cause serious accident fork out of an inner door frame channel steel; the two chain loose a tight, causing a chain of overload and eccentric load, causing a fork and an inner door frame movement is not smooth, not flexible. Therefore, must adjust the two chain. The method is: will the rough terrain forklift trucks‍ parked in the flat field, the door frame in a vertical state, the fork fell to the ground, a lifting oil cylinder piston (Zhu Sai) to the next check point. Installed on the chain, two chain end and fork is connected, and a lock. The chain around the pulley, and the other end of the lifting oil cylinder body flange or the door frame beam is connected with the hinge bolts and adjusting the length of the chain. Finger at 1000mm from the ground, to 49N for the quasi according to the chain, the chain moving distance is below 20mm, in the same way, adjust the other chain. The two chain after a good tune, lifting fork and then check the tightness, two chain length should be consistent.‍