20 Ton Overhead Crane

Capacity: 20 tons
Span: 25 meters
Lift height: 9 meters
Hoist type: Electric wire rope hoist

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20t Overhead Crane

20 ton overhead crane is a type of crane that is designed to lift and move heavy loads weighing up to 20 tons. This type of crane is typically used in industrial settings, such as factories, warehouses, and construction sites, where heavy materials or equipment need to be moved around.

There are several types of overhead cranes that are capable of lifting 20 tons, including:

Double girder overhead crane: This type of crane has two parallel girders that support the hoist and trolley. It offers higher lifting capacities and wider spans than single girder cranes.

Single girder overhead crane: This type of crane has a single girder that supports the hoist and trolley. It is a more economical option for lighter loads and shorter spans.

Here a main components of single girder overhead crane:

main components

20 ton Overhead Crane Features

● Compact construction
● Space saving design
● Lightness of main girder
● Covenient operation
● Smooth moving
● IP65 Penant/Remote control system

advantages

20t Overhead Crane Specification

Specification	Details
Capacity	20 tons
Span	25 meters
Lift height	9 meters
Hoist type	Electric wire rope hoist
Hoist speed	0-8 m/min
Trolley speed	0-20 m/min
Crane speed	0-40 m/min
Control system	Pendant and/or radio remote control
Duty class	A5 (intermediate)
Power supply	3 phase, 50Hz, 380V
Ambient temperature	-20°C to 40°C
Protection class	IP54
Safety features	Overload protection, emergency stop button, limit switches
Structural material	Steel
Paint	Anti-corrosion paint
Certification	CE, ISO9001

Leading Safety Protection

Overload protection: This can be achieved through a variety of mechanical mechanisms, such as load cells or pressure sensors, that detect when the load being lifted exceeds the maximum rated capacity of the crane. Once the overload is detected, the system can automatically shut down the crane or limit the crane's lifting capacity to prevent further overloading.

Overheating protection for lifting motor: This protection system monitors the temperature of the lifting motor and can automatically shut down the motor if it reaches a certain temperature threshold to prevent damage or failure.

Overcurrent protection for lifting motor: This protection system monitors the current flowing through the lifting motor and can automatically shut down the motor if it exceeds a certain current threshold to prevent damage or failure.

Motor insulation protection: This protection system monitors the insulation of the lifting motor and can automatically shut down the motor if the insulation is damaged or deteriorating, which could lead to electrical shock or other hazards.

Limit switches: These switches are used to prevent the crane from traveling beyond its designated working area or to prevent the trolley from traveling beyond the edges of the runway.

Rope slacking protection: This system monitors the tension in the lifting ropes and can automatically shut down the crane if the ropes become slack, which could cause the load to fall or the crane to tip over.

Declining lifting protection: This system can detect if the load is declining or if the crane is becoming unstable, and can automatically shut down the crane to prevent accidents.

Alarm horn and flash lights: These safety features can alert workers and others in the area if there is an emergency or danger present.

Safety latch for hook: This latch ensures that the load is securely attached to the crane and prevents it from accidentally falling off the hook.

Bridge gear motor locker and single girder trolley locker: These features lock the bridge and trolley gears to prevent unintended movement of the crane.

Low voltage protection: This system can automatically shut down the crane if the voltage drops below a certain threshold, which could cause the crane to malfunction or fail.

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