The lifting height of the crane is generally calculated from the ground of the work site (the crane is not supported on the ground rail) or from the top surface of the crane's ground running track (the crane is supported on the ground rail) to its retrieval device The vertical distance between extreme positions. When the spreader is a hook, take the lower end of the inner arc of the hook; when the spreader is a grab or other retrieval device, take the lower point; when the spreader is a fork, take the upper surface of the fork. For cranes whose picking device is to be dropped to the ground or below the surface of the ground running track, the depth at which the spreader falls to the ground or below the surface of the ground running track is the descent depth, and the total lifting height is the sum of the lifting height and the descent depth. The lifting height symbol is H and the unit is m.
The lifting heights of general bridge type, general gantry type, port gate seat and port floating crane are shown in the table respectively. The actual lifting height of the crane is proposed by the user when placing an order. Generally , each additional 2 m from 6 m is an even number; if the requirements exceed those specified in the table, a larger lifting height value shall be negotiated between the supplier and the buyer. Handling of non-standard super-large lifting height cranes.
The lifting height table of the general bridge crane is as follows:
|
Lifting capacity G(t) |
Hook
|
Grab |
Electromagnetic chuck |
||||
| General lifting height H (m) | Increase the lifting height H ( m ) | General lifting height H (m) | Increase the lifting height H (m) | General lifting height H (m) | |||
| Main hook | Secondary hook | Main hook | Secondary hook | ||||
|
≤ 50 |
12～16
|
14～18
|
twenty four |
26 |
18～26
|
30 |
16 |
|
6 3 ～125
|
20 |
twenty two |
30 |
32 |
— |
— |
— |
|
160～250 |
twenty two |
twenty four |
30 |
32 |
— |
— |
— |
Lifting height of general gantry crane:
|
Lifting weight G (t) |
Span S (m) |
Lifting height of hook crane H (m) |
Lifting range D |
|||
| Grab crane | Electromagnetic crane | |||||
| Lifting height H (m) | Depth of descent h (m) | Lifting height H (m) | Depth of descent h (m) | |||
|
5 ～50 |
10～26 |
12 |
8 | 4 |
10 |
2 |
| 30～50 | 10 | 2 | ||||
|
63～125 |
18～50 |
14 |
— |
— |
— |
— |
|
160～250 |
18～50 |
16 |
— |
— |
— |
— |
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