Safety requirements for work trucks and hydraulic systems

First, forklift safety requirements working device

1. The mast shall be deformed and weld sealing off phenomenon, both inside and outside of the door frame roll gap adjustment should be reasonable and not greater than l. 5mm, wheel rotation should be flexible, wheel and axle should be free of cracks, defects. Round groove wear amount not greater than 10% of the original size.

2. Two lifting chain tension should be uniform, not distorted, end coupled solid, chain pitch must not exceed 4% of the original length, or should replace the chain. Sprocket rotation should be flexible.

3. Fork shall have severely deformed weld sealing off phenomenon. Fork surface without cracks, open seam welding phenomenon. Fork root angle not greater than 93 °, the thickness of not less than 90% of the original size. Left and right fork tip height difference must not exceed 3% of the fork length of the horizontal section. Fork positioning should be reliable, fork hook bearing surface, positioning surface no obvious defects, with the gap fork and fork frame should not be too large, and smooth movement.

4. lifting cylinders and connecting parts of the door frame should be solid, tilt cylinders and door frame, hinged frame should be solid, flexible, with the gap is not too large. Cylinders should be sealed, no cracks, smooth. At rated load, lOmin door frame from the sink is not more than 20mm, angle of no more than 0.5 °. Lifting speed at full load should not be less than half the standard value.

5. Overhead guard, backrest should be complete and effective.

Second, Lpg Gas Forklift Truck safety requirements of the hydraulic system

1. Night pressure system pipe joints solid, no leakage, and other parts do not touch the ground, rubber hose or aging, deterioration phenomenon.

2. The hydraulic system transmission components rated load, rated speed range should not be crawling, stagnation and a significant impulse phenomenon.

3. The multi-valve housing no cracks, leaks; be good and reliable performance; safety valve is sensitive, in 25% overload should be able to open, adjusting bolt nut should be complete strong. Operating handle positioning accuracy, reliability, not due to vibration displacement.

4. load curve, the hydraulic system should be complete clarity nameplate.