Detailed design introduction of our mini excavator products
Our mini excavator products have undergone many iterations since the initial design.
————Taking this 18-ton excavator as an example, we will introduce the details：
The working equipment of an excavator consists of the boom, arm, and bucket, which are critical for power transmission and operational precision. The boom is welded from high-strength, wear-resistant steel with a box-type main structure, internally reinforced with ribs to enhance bending resistance. The bushings at the joints use oil-impregnated bearings and are fitted with dust-proof seals to effectively block sand and dust, extending service life. The pins connecting the arm to the boom are heat-treated via high-frequency quenching, reaching a hardness of over HRC55, and feature a double-layered seal structure to ensure stability under heavy loads. The bucket is customized for specific working conditions: the teeth are forged from high-manganese steel with rounded, sharp tips to reduce digging resistance; the bucket interior is lined with wear-resistant plates featuring anti-slip textures to improve loading efficiency; and all corners are rounded to minimize collision deformation.As our new generation model, we have widened the robotic arm to improve its stability and mobility.
The cab is designed with the operator’s comfort and safety as top priorities. The suspended seat features multi-level angle adjustment and lumbar support to effectively absorb vibrations. The control levers adopt an ergonomic curved design with anti-slip rubber grips and finger grooves, enabling light and precise operation. The instrument panel is a fully liquid-crystal display with automatic brightness adjustment, where key data is highlighted for easy reading. The multi-functional steering wheel integrates control buttons, allowing the operator to adjust travel speed or activate alerts without looking down, enhancing efficiency. The tempered glass windows surrounding the cab provide blind-free visibility and are coated with anti-glare layers to ensure clear sightlines even under strong light.
The track system balances stability and mobility. The track pads are made of high-strength alloy with anti-slip teeth to provide strong traction on complex terrain. Buffering rubber cushions are installed at the track joints to reduce driving noise and vibration. The hydraulic tensioning mechanism automatically adjusts track tightness based to terrain conditions, ensuring smooth operation and longer track life. The undercarriage frame uses an integrally welded box structure with reinforcements at key points to improve torsion resistance; protective plates at the bottom shield critical components from flying debris. The drive wheels and guide wheels are hardened with precisely machined teeth that match the track pitch, ensuring efficient and stable power transmission.
To adapt to harsh working environments, the excavator is also equipped with refined protection and system configurations. The engine compartment features a sealed structure with dust-proof filters to ensure reliable heat dissipation for the engine in dusty environments. The cooling fan works in tandem with the hydraulic oil cooler to maintain stable operation under high temperatures. The hydraulic pipelines are covered with wear-resistant protective sleeves, and the connections use reliable clamp-type structures to prevent oil leaks. The hydraulic tank is fitted with a level gauge and drain valve for easy daily inspection and maintenance. A work light is installed on the top of the cab for efficient night operation, and a toolbox on the side of the machine provides convenient access.
