Folding Metal Cart With Wheels is a six-wheel multi-purpose vehicle designed for complex terrain. It adopts an iron frame, PP impact-resistant basket and EVA buffer layer, combined with a six-wheel step climbing system, to achieve seamless switching between stair transportation and flat ground movement.

1. Step climbing system

Six-wheel linkage design:

• Front wheel: 2 sets of 360° PU universal wheels, bearing accuracy ABEC-5, minimum turning radius 45cm.

• Step wheels: 4 sets of nylon reinforced rubber wheels, step climbing inclination ≤20°, suitable step height ≤18cm, climbing speed ≥0.5m/s.

• Power test: Continuously climb 15 steps under full load of 30kg, gearbox temperature rise<15℃, passed="" en="" 12150-1="" mechanical="" durability="" certification.="">

2. High-strength composite structure

• Frame material: Q235B cold-rolled steel plate, yield strength ≥ 235MPa, bending strength > 600N·m, no plastic deformation after 10,000 folding fatigue tests.

• Basket performance: PP material temperature resistance -30℃ to 100℃, impact energy > 50J, FDA food grade certification, can directly contact fresh food.

3. Human-computer interaction optimization

• Handle design: TPE coated handle, grip contact surface increased by 40%, in line with ISO 11228-3 push-pull specification, continuous use of 1 hour hand pressure < 8kPa.

• Folding efficiency: four-link quick release structure, folding operation force ≤ 8N, unfolding/folding time < 3 seconds, support one-handed blind operation.

4. Environmental tolerance and safety certification

• Anti-slip brake: electromagnetic brake system, slope parking angle ≤ 25°, passed UL 1642 electrical safety certification.

• Corrosion resistance: zinc coating thickness ≥ 85μm, salt spray test > 1500 hours, service life in humid environment > 8 years.

5. Logistics and environmental parameters

• Packing density: 4 units/box, the shipping volume is 35% smaller than that of traditional four-wheeled vehicles, and the container loading rate is increased to 95%.

• Recyclability: iron frame recycling rate > 98%, PP material is GRS certified, and carbon footprint < 8kg CO₂/unit.

1. Supermarket industry

• Narrow passage optimization: The 360° universal wheel group in the six-wheel system is suitable for channels with shelf spacing ≥65cm, and with the step wheel assisted steering, 30kg of goods can be transported at a time, and the replenishment efficiency is increased by 60% compared with the traditional four-wheel cart.

• Smart device compatibility: The barcode scanning slot is reserved on the side of the basket, which supports quick scanning of handheld terminals, and the inventory counting time is reduced by 40%.

• Anti-collision design: The front wheel pressure-sensing brake automatically decelerates when the shelf spacing is 1.2 meters, and the product collision rate is reduced by 90%.

2. Outdoor industry

• All-terrain climbing: The six-wheel system supports 20° slopes and ≤18cm step heights, and 30kg of equipment such as tents and cooking utensils can be transported at a time, and the material delivery efficiency of mountain camping sites is increased by 300%.

• Modular expansion: Add folding table boards and hanging hooks to meet multi-functional needs such as outdoor cooking and lighting equipment suspension.

• Extreme environment tolerance: The wheel group rubber hardness retention rate is greater than 80% at low temperatures of -30℃, and there is no performance degradation in high desert temperatures for 6 hours.