Design Planning Construction and installation of Hoist Crane

Summary

This video showcases the fabrication and construction process of a single girder hoist crane at PT. Hamzah Baja Indonesia in Cakung, East Jakarta. The hoist crane, with a 5-ton capacity, uses Brima brand machinery and features a festoon cable system and wireless remote control. The process includes structural analysis, design adjustments, and detailed fabrication, from girder material inspection to the installation of safety features and electrical systems. The video also covers safety measures, manual testing, and certification procedures for the hoist crane, providing insights into the standards and attention to detail in crane construction.

Takeaways

• 😀 The project is for PT. Hamzah Baja Indonesia in Cakung, East Jakarta, focused on steel trading and hoist crane fabrication.
• 😀 The construction involves three hoist cranes: two double girder cranes (5 tons and 25 tons) and one single girder crane (5 tons).
• 😀 The single girder hoist crane being discussed in the video has a 5-ton capacity and uses a BRIMA brand hoist machine.
• 😀 The hoist crane construction includes key components such as festoon cable systems, wireless remote control, and conductor plate with a 75 Ampere capacity.
• 😀 Safety features include collector arms for electricity transfer, limit switches to cut off motor power, and regular lubrication of gears.
• 😀 Regular checks and safety markings are placed on the crane's body, such as for electrical conductors and potential electric shock risks.
• 😀 The project involves modifying and repurposing a used 10-ton girder for a new 5-ton hoist crane, reducing costs by reusing quality materials.
• 😀 Structural analysis of the girder is done using ETABS software to ensure it meets the required specifications for the new design.
• 😀 The installation process includes a manual push test to ensure that the crane moves freely without obstruction before motor installation.
• 😀 After installation, the hoist crane undergoes a loading test to verify lifting capacity, speed, and other functional aspects for labor service certification.

Q & A

What is the primary focus of the video project?

The video focuses on the construction and fabrication of hoist cranes for PT. Hamzah Baja Indonesia in East Jakarta, specifically reviewing the single girder hoist crane on the east side with a 5-ton capacity.

What type of hoist cranes are used in the project?

The project includes three types of hoist cranes: a double girder hoist crane with a 5-ton capacity using a Stahl brand engine, a double girder hoist crane with a 25-ton capacity using a KITO brand engine, and a single girder hoist crane with a 5-ton capacity using a BRIMA brand engine.

Why was a structural analysis done on the girder material?

The girder material used was previously employed for a 10-ton hoist with a span of 15 meters, while the new project required a 5-ton hoist with a span under 12 meters. A structural analysis was done to ensure the material's strength and suitability for the new specifications.

What safety features are highlighted in the hoist crane design?

The hoist crane design includes safety features like safety markings, a buzzer alarm system for the crane's movement, mechanical limit switches, and periodic lubrication of the gear. These are added to ensure safety during operation and maintenance.

Why is a manual push test performed before powering the end carriage motor?

A manual push test is performed to ensure that the end carriage moves freely along the runway without obstruction. This step is critical for safety, as it prevents the end carriage from derailing or damaging the track when the motor is powered on.

What type of electrical system is used for the hoist crane?

The hoist crane uses a conductor plate electrical system with a 75 Ampere capacity. A festoon cable system is employed for the electrical line along the girder, and the crane is operated using a wireless remote control.

What materials are used in the fabrication of the hoist crane's girder?

The girder material is made from a high-quality used girder that was originally designed for a 10-ton hoist. The girder was modified to fit the new specifications, with adjustments made to its length, joint bolt placement, and the location of the track and festoon cables.

What is the purpose of the collector arm in the electrical system?

The collector arm is used to conduct electricity from the factory's electrical panel to the conductor plate along the crane's runway. It ensures a continuous power supply to the hoist crane during operation.

How is the end carriage installed and tested?

The end carriage is installed using an excavator, with careful attention to balancing the load to prevent movement during the lift. A manual push test is conducted to ensure the end carriage moves smoothly along the runway before the driving motor is installed.

What tests are conducted before the hoist crane is fully operational?

Before the hoist crane is fully operational, several tests are conducted, including a loading test to verify the machine's lifting capacity, maximum lifting distance, lifting speed, trolley speed, and the dimensions of the wire rope and hook.