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 Double trolley overhead crane is a double girder overhead crane equipped with two trolleys, which can work simultaneously or separately. They are mainly used to lift long and big loads or sets of loads with two long distance lifting points. The lifting capacity of the double trolley overhead crane is 5 ton to 400 ton, and the work class is A5 and A6.

QE Double Trolley Overhead Crane Features at a Glance

It adds a trolley on QD overhead crane becoming double trolley crane;

Mainly be used to lift long and big loads or some sets with two long distance lifting points;

Design and manufactured in accordance with GB/T 14405, General Bridge Crane ;

Widely used in storage, workshop,stockyard;

The two can achieve the lifting, dropping and travelling at same time, also can drive individually.

QE Double Trolley Overhead Crane Features

(1) In General

• Compact structure, new style, beautiful outlooking.
• Good in usability with long service life.
• Bearing high capacity, high working class.
• Flexible operating, safe and reliable.
• Widely used and competitive on quality and price.

(2) Main Body

• Double girder, welding box beam, camber meet national standard;
• Adopt high quality carbon steel, Q235B or Q345B; (similar as Fe37 or Fe 52);
• Mainwelding submerged are welded automatically, nondestructive flaw detection;
• The trolley consisted with motor, reducer, brake, coupling, the wheel, drum;
• No asbestos brake pad or brake block, insert the card installed, safe and reliable;
• The speed reducer has hard-toothed surface, compact structure, durable;
• End girder is matched with rail buffer and rail clearance device;
• Crane protection grade is IP54 or IP44;
• F grade insulation, brake effectively and long service life.

(3) Electric System

• Electric box layout is reasonable, easy to repair;
• Security trolley line or angle steel trolley line;
• External cable is equipped with mark line number;
• Trolley moving’ power is supplied by flat cable;
• And the conductor is I steel or C shape sliding line;
• Safe touch line conductive rate is high, low pressure;
• Set electric taxi speed is high;
• Lifting and crane can be independently controlled and also can run separately or together;
• Sliding smooth, and beautiful outlooking

(4) Protection Devices

• Outdoor crane are equipped with lifting mechanism, electrical control box and rainproof devices;
• Set the trolley trip spacing device, anti-collision device;
• Audible and visual alarm device;
• And set platform, cover and protecting barriers.

(5) Operation Device

• Ground control and cabin control;
• Special cabin for bridge crane or capsule driver room, open vision comfortable operation;
• The cable has open style, close style, can fixed on left or right;
• The open direction includes end open, side open or top open;
• The cabin has special small room and the capsule cabin;
• Ground control has handle and remote control; do not need to set up special driver;
• Users can choose as you need.

(6) Optional Function

• All the mechanism aped regulation is 1:10 or bigger;
• Overload limiter and alarm display, and the load of weighing and display ;
• Height limiter device;
• The change between main hook and aux hook on single trolley central lubrication;
• PLC controlling and accident testing, record display and typing system

QE Double Trolley Overhead Crane Design Drawings

QE Double Trolley Overhead Crane Parameters

Components of double trolley overhead crane

Double trolley  crane is mainly consisted of crane beam, cab, trolley travelling mechanism and electric equipment. The driver chamber has three open directions: side, top and end.

Double trolley crane – Dongqi trolley overhead crane for your reference

Applications of double trolley overhead crane

The double trolley overhead crane are usually used in storage, workshop, stock yard or other factories and mines to lift long materials such as, pipe, wood, bar, etc.

Features and advantages of double trolley overhead crane

• Efficient and stable working performance
• Reliable quality and cost-effective price.
• Compact structure, light dead weight
• Convenient for storage or transport
• Easy to install and maintain
• Good appearance
• Wide application
• Customized design is provided.