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Single Jib Portal Crane

Single Jib Portal Crane
Single Jib Portal Crane

Single Jib Portal Crane introduction

Single jib portal crane is the simplicity of portal crane, which is confirming with Harbor portal crane technical specifications, harbor portal crane safety specification, crane design standards. The single jib portal crane is extensively used for the handling of cargos such as coal, ore on docks and also used to loading and unloading of other cargo ship, etc. The main parameters of the single jib portal crane is shown in the following table:

Product Type MQ
Lifting Capacity 10~35t
Span Length  5.5~16.5m
Working Class A6,A7
Ambient Temperature -25~40℃

Components of Single Jib Portal Crane

Single jib portal crane mainly consisted of steel frame, material lifting mechanism, slewing mechanism, crane traveling mechanism, spreader device, i.e. grab, container spreader, magnet, and hook, electrical equipment and safety accessory equipment, etc.

The steel structure of single jib portal crane are made of jib and A-frame, slewing platform and gantry frame, etc.

Single Jib Portal Crane Drawing
Single Jib Portal Crane

Features of Single Jib Portal Crane

  • Economic application to load and discharge cargoes on port, dock, wharf, etc.
  • Simple steel structure
  • Lighter crane weight, and wheel load pressure.
  • Lower engineering investment for civil wharf or shipyard

Case of Single Jib Portal Crane

The following is one of DQCRANS’ case, which will be presented to you through pictures for your reference. 

Crane tests before operation

Before operation, several of tests are needed to ensure the safety of operation and working staffs.

1. Crane inspection

  •  jib crane parts checking.
  • Jib crane specification verification.
  • Installation, Circuit instrument equipment and crane staff.

2. Crane safety limit test

  • Isolated running.
  • Lifting amplitude of variation.
  • Lifting slew

3. Test on crane loading capacity

4. Dynamic overload test

5. Static overload test.

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