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Main technical parameters of crane:
1. Lifting capacity G should distinguish between effective lifting capacity Gp and rated lifting capacity Gn. For variable amplitude cranes, work should be carried out according to the rated lifting capacity allowed by the range regulations.
2. Lifting moment M refers to the product of the amplitude L corresponding to the weight Q of the lifted article.
3. The overturning moment MA refers to the product of the article's gravity Q and the distance A from the load center line to the overturning line.
4. The total mass of the crane Go refers to the weight of the crane.
5. Wheel pressure P refers to the maximum vertical load transmitted by the wheel to or on the ground.
6. Amplitude L refers to the horizontal distance between the centerline of rotation and the vertical centerline of the spreader. There are maximum and minimum amplitudes. The maximum amplitude is the smallest inclination angle of the boom, and the smallest amplitude is the opposite.
7. Outreach i refers to the maximum horizontal distance from the centerline of the spreader to the centerline of the track closest to the cantilever.
8. Lifting height H refers to the vertical distance from the upper limit position of the lifting device of the crane to the ground or the top of the rail.
9. The descending depth h refers to the vertical distance from the lowest working position of the crane spreader to the supporting surface.
10. Lifting range D refers to the vertical distance from the highest position to the lowest position of the spreader, which is also the reference value for determining the length of the drum wire rope.
11. The boom length Lb refers to the distance (center line) from the pin at the root of the boom to the axis of the end pulley.
12. Crane inclination angle refers to the angle between the longitudinal center line of the boom and the horizontal line.
13. Working speed
① Lifting (descending) speed Vn (m/min) refers to the speed at rated load.
② The rotation speed W (circle/min) is 10m above the ground, and the wind speed is less than 3m/s rated load.
③The running speed VR (m/min) of the cart is 10m above the ground, and the wind speed is less than 3m/s rated load.
④The running speed Vt (m/min) of the trolley is 10m above the ground, and the wind speed is less than 3m/s rated load.
⑤The average speed of the amplitude of the variable amplitude Vr (m/min) from the maximum value to the minimum value.
14. Span S (meters) refers to the horizontal distance between the center lines of the bridge crane support.
15. Gauge and base distance
Gauge refers to the horizontal distance between the center lines of the rails of cranes or trolleys (overhead trolley refers to the span), and the base distance refers to the distance between the center lines of the two legs of the crane in the direction of the track. For cranes that operate without rails Usually called wheelbase and wheelbase.
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