Freight Electric Tricycle Assembly Line and Manufacturing Process

The assembly line and manufacturing process for freight electric tricycles involve a combination of automated and manual operations. The layout includes main and auxiliary assembly lines with parallel stations for core and auxiliary component installation. Key manufacturing steps include frame fabrication with welding and rust prevention, motor and battery assembly, and control system installation. The painting process features electrophoretic primer and topcoat application with high-temperature curing for durability and aesthetics. Quality inspection and performance testing ensure the final products meet safety and performance standards. This integrated approach ensures efficient production and reliable performance of freight electric tricycles.

Below is a detailed explanation of the assembly line and manufacturing process for freight electric tricycles:

I. Assembly Line Layout and Design

1. Assembly Line Layout:

• The assembly line for freight electric tricycles typically adopts a board-type layout with supports, with two parallel main assembly lines. The rear supports are fixed on the board-type conveyor to hold the rear axle, while the front supports are adjustable to accommodate different wheelbase models.
• The assembly line is divided into the main assembly line and auxiliary assembly line. The main assembly line is responsible for the installation of core components such as the frame, motor, battery, and control system, while the auxiliary assembly line handles the installation of decorative parts and other auxiliary components.

1. Application of Automated Equipment:

• Automated Conveying System: This ensures the smooth movement of components and semi-finished products along the assembly line, improving production efficiency.
• Robotic Welding: In the welding process, robotic welding equipment can achieve high-precision welding, enhancing both welding quality and efficiency.
• Automated Inspection Equipment: At the end of the assembly line, automated inspection equipment is installed to conduct performance tests and safety checks on the vehicles.

II. Manufacturing Process

1. Frame Manufacturing:

• Material Processing: The frame is usually made of steel or aluminum alloy and is formed through processes such as cutting, stamping, welding, and bending.
• Welding and Grinding: After welding, the frame needs to be ground to remove welding slag and burrs, ensuring a smooth surface.
• Rust Prevention Treatment: The frame undergoes rust prevention treatment before being coated with electrophoretic paint to enhance its corrosion resistance.

1. Component Manufacturing:

• Motor Manufacturing: The motor is assembled by using an automatic winding machine to wind the copper wire around the stator, followed by the installation of magnets and metal covers, and the injection of anti-corrosive and lubricating liquid oil.
• Battery Assembly: The battery pack installation must be secure and safe. During the assembly process, strict electrical connections and fixings are required.
• Control System Installation: This includes the installation of electronic components such as controllers and dashboards, which are crucial for the performance of the electric tricycle.

1. Assembly Process:

• Component Installation: Components such as wheels, motors, batteries, seats, lights, and body shells are installed in sequence according to the design drawings.
• Electrical System Connection: The electrical system includes the motor controller, battery management system, lighting system, etc. During installation, it is essential to ensure correct wiring connections.

1. Quality Inspection and Adjustment:

• Performance Testing: After assembly, the vehicle undergoes comprehensive performance testing, including speed, braking, handling, and range capabilities.
• Safety Inspection: Strict safety checks are conducted on the vehicle’s braking system, steering system, electrical system, etc., to ensure compliance with safety standards.
• Adjustment and Tuning: Based on the test results, the vehicle is adjusted and tuned to ensure optimal performance.

III. Painting Process

Painting is an important part of the production of electric tricycles. The painting process not only affects the appearance of the vehicle but also plays a key role in its corrosion resistance.

1. Painting Process Flow: After pre-treatment, the frame and body are first coated with electrophoretic primer, followed by topcoat application, and finally, high-temperature baking for curing.
2. Process Features: An acid pickling and phosphating process is used to ensure the adhesion of the electrophoretic primer. The topcoat uses environmentally friendly paint, resulting in a smooth and fine finish that is both aesthetically pleasing and eco-friendly.

Through the above detailed assembly line layout and manufacturing process, the production of freight electric tricycles can achieve efficient and high-quality production while ensuring the performance and safety of the products.