30ton Grab Bucket Overhead Crane From China Mingdao
Product Description
Brief Introducion:
QZ model double girder 5-20 ton grab bridge crane is widely used in loading goods in port, factory, workshop and power plant.
The work classification is heavy. The working duty is A6.The lifting capacity includes the weight of the grab.
It is widely used in power plants, ore, limestone, coke, coal, sand, slag, loose clay and other granular material warehouse.
The special requirement should be mentioned when grab underwater material or some special material. When using outside,
there is water proof equipment along with the grab.
This type grab overhead crane can be grouped by single girder grab overhead crane and double girder grab overhead crane.
Double Girder Grab Overhead Crane
Single Girder Grab Overhead Crane
| Main Parameters List(REFERENCE) |
| Crane Traveling Mechanism |
Traveling Speed(m/min) |
20 |
30 |
45 |
60 |
| Ratio |
58.95 |
39.42 |
26.51 |
19.44 |
| Motor |
Type |
Cone Squirrel-cage |
Cone Squirrel-cage |
| Power(kw) |
0.8*2, 1.5*2, 2.2*2 |
1.5*2, 2.1*2 |
| Rotary Speed(r/min) |
1380 |
1350 |
| Hoist Lifting Mechanism and Traveling Mechanism |
Electric Hoist Model |
MD1 |
CD1 |
| Lifting Speed(m/min) |
8/0.8, 7/0.7, 3.5/0.35 |
8, 7, 3.5 |
| Span(m) |
7.5-22.5 or assigned |
| Lifting Capacity(t) |
0.5-32 |
| Lifting Height(m) |
6, 9, 12, 18, 24, 30 |
| Traveling Speed(m/min) |
20, 30 |
| Motor |
Cone Squirrel-cage |
| Work Duty |
Intermediate Jc=25% |
| Power Supply |
380V 50HZ 3P |
| Wheel Diameter |
Φ270, Φ400 |
| Trail Width |
37-70 |
Grab Types: We can offer the grab type according to your special requirements.
Safety Devices for overhead bridge crane:
To guarantee the normal operation of crane and avoid the personal casualty and mechanical damage, the safety device we
provide are not only the electric protective devices or alarm bell but also other
equipments as following:
1.Overload Limit Switch
2. Rubber Buffers
3.Electric Protective Devices
4.Emergency Stop System
5.Voltage Lower Protection Function
6. Current Overload Protection System
7. Rail Anchoring
8.Lifting Height Limit Device
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