5 Ton Overhead Crane Project in Thailand

Background

Global Port Engineering & Services Sdn Bhd (GPES) is a famous company in port machinery maintenance and parts replacement. Established with a strong operational presence across Southeast Asia, GPES operates branches in Johor Bahru (JB) and Penang in Malaysia, as well as in Indonesia, Singapore, and Thailand. Their Singapore branch handles projects in Gabon and Cameroon, while their Thailand branch specializes in port machinery maintenance. GPES has a history of sourcing high-quality components for port machinery, including trolley wheels, bearings, suspension cables, and other crane accessories.

Cooperation History with Yuantai Crane Company

Yuantai and GPES began their partnership in 2014, with additional projects in 2015 and 2019. The primary focus of these collaborations was the supply of crane components such as wheels, bearings, and other accessories for port machinery.

However, during an interim period, GPES opted to source products from a Taiwanese supplier due to the competitive advantage offered by NT dollar payments and lower pricing. Despite this, the client acknowledged the superior quality of Yuantai products, citing exchange rate fluctuations as a primary factor for the temporary shift.

Recent Project Overview

For the current project, GPES required eight 3-ton single-girder bridge cranes with a span of 26 meters. The project was located in Thailand, emphasizing the importance of cost-efficiency and logistical feasibility. To minimize shipping costs, GPES specified that the cranes should exclude the main girders.

Solution Development

Initial Proposal:

Yuantai's engineering team initially recommended the LD general-purpose single-girder bridge crane. This cost-effective option met GPES's preliminary requirements for a lightweight, reliable solution.

Refined Proposal:

Upon detailed discussions and analysis of factory drawings and specific technical requirements, it became evident that GPES required a more advanced solution. Therefore, our engineers revised the plan to a 3-ton HD single-girder bridge crane, featuring the SZW electric hoist for improved efficiency and durability.

Customization:

The crane design was tailored to meet GPES's operational and logistical constraints.

• Optimized Span: The 26-meter span was engineered for precision, ensuring compatibility with GPES's factory layout.
• Simplified Shipping: Exclusion of the main girders significantly reduced shipping volume and costs, aligning with GPES's budgetary preferences.
• Advanced Hoist: The SZW electric hoist offered better performance for high-frequency operations, providing a better user experience.

Brief Description of HD European Single Girder Overhead Crane

The European-style single-girder bridge crane consists of a bridge frame, trolleys at both ends and a hoist. Through advanced optimization design, the most reasonable structure is adopted from hoist, end beam to main beam. The self-weight is lighter than traditional cranes, and the wheel pressure is also smaller. This means fewer and smaller steel structures are required for warehouses and workshops, which ultimately saves the construction cost of a new workshop.

• The main girder/bridge is an automatically welded box girder, and the web has no butt welding. The trolley track is made of Q345B square steel. The end beam adopts a rectangular square tube structure, and the material is Q235B or Q345B. After the end beam is formed, it is positioned on the CNC machining center and processed as a whole to ensure dimensional accuracy and tolerance.
• The whole machine runs smoothly, with low noise and no deviation. End beams are fitted with double flanged wheels and buffers. The main beam and the end beam are connected by 10.9 high-strength bolts, which have good safety and high strength, ensuring the running accuracy and stability of the whole machine. The grinding wheel is made of spherical grinding cast iron QT-700-2, which has good self-lubrication, high strength, small diameter, high machining accuracy and low noise.
• Optimized air-cooled lifting motor, equipped with thermistor overheat protection. If the temperature reaches a maximum limit of 150°C, the thermistor will cut off the power to the motor. When the temperature drops to normal operating temperature, the motor power will be turned back on. The internal gear of the motor is made of 20CrNiMo low-carbon alloy steel after grinding. The hardness is above 60HRC, and the precision reaches grade 7. The housing is made of aluminum to minimize its own weight.
• The planetary reducer is built in the drum, which has the characteristics of high rigidity, high precision, high transmission efficiency and small size. The noise is as low as 65dB, the sealing is good, and there is no oil leakage. High-strength galvanized steel wire rope, no need to apply anti-rust oil, maintenance-free, industrial plastic rope guide, less wear and tear on the wire rope, and long service life.
• Our European specification bridge cranes are equipped with overheat protection, overload protection phase sequence protection, etc. The power consumption of the whole machine is low. It can minimize the loss of low production due to equipment failure, and also save equipment maintenance costs.