Design drawing supply mobile gantry crane 25t 30t

This gantry crane is composed of strong girder, L type support leg, crane travelling organ, trolley, electric equipment Etc. The frame adopts box-type welding mechanism, the L type single leg is welded structure in order to increases the work space, and it is convenient for the transportation, installment and maintains. Crane travelling mechanism adopts separate drive.

L type trolley heavy duty gantry crane is matched with a strong trolley, It is ideal for outdoor applications where lifting facilities are provided without the cost of a building or any supporting steelwork. They are also suited to indoor applications where existing building structures are not suitable to take overhead cranes, and where additional supporting steelwork would result in a loss of floor area. It can be constructed with a cantilever to allow handling outside the rail centers.

Design characteristic:

This kind of gantry crane beam design is just like a letter “L”, it could pass the big volume items, and this is a development of normal single beam gantry crane.

The lifting mechanism have TWO MODEL:

1)Wirerope electric hoist 

2)  Strong crab trolley 

Crane Configuration: 

Material:  Steel plate material Q235 or Q345B ( similar international steel plate FE3 or FE52)
Steel structure: Strong Steel box type, seamless type, more strong and elegant beam.

Crane traveling motor: Soft start type
Wheel:Vacuum casting by our group, Inter medium frequency quenching

Main electrical parts: Schneider brand or Siemens brand.

1. Limit Switch: Safety limit switches for stoppers prevent over traveling in all motions.

2. Anti collision device

   When two crane traveling on the same rail, the cranes will install the following devices:

   Anti-collision device, Infrared non-contact and inductive type limit device

   Sound and light alarm device, Wireless anti-collision device

3. Weight overload protection device

   Includes automatic stopping type lifting weight limiter and weight display device.

4. Lifting limit switch and traveling limit switch

5. Emergency stop system

6. Electrical protection

   The main insulation switch, emergency stop switch, short circuit, Zero voltage protection,  loss of field               protection, Current overload protection, over speed protection, zero position protection

    Phase sequence protection and adopted crane specially anti- vibration contactor etc.

7. Interlock device

   It sets interlock device for the cabin door and the other door from cabin into bridge structure, when the door    is opened, the crane cannot work.

Normal Quotations:

1. Lifting capacity ______ton

2. Single beam or double beam?

3. Standard type or Europe type?

4. Crane Span _______meters (Rail middle center to center distance)

5.  Lifting height ______meters (Hook to ground)

6. Industrial voltage _____V, _____HZ, 3Phases

7.  Control mode

      A.   Pendant control   B. Remote control   C. Cabin control

8.  What material does the crane lift?

9.  Do you also need us to supply bearing beam, rail and slide wire?

      A.    Yes            B. No

10.   Any special design demand on crane?