Industry Background Introduction

Excavators are one of the most common construction equipment in the engineering machinery industry, and are used in infrastructure, road engineering, mining, water conservancy and hydropower, municipal construction and other fields. The core power source of its operation comes from the hydraulic system. The hydraulic pump, hydraulic motor, multi-way valve, hydraulic cylinder and other components work together to complete complex excavation, lifting, walking and rotation actions.

A close-up view of a mechanical engine component, featuring a central circular metallic part with bolts and surrounding machinery. Various pipes and wires are visible, indicating a complex assembly. The lighting highlights the metallic and industrial aspects, providing a detailed look at the pistons and gears.
A close-up view of a mechanical engine component, featuring a central circular metallic part with bolts and surrounding machinery. Various pipes and wires are visible, indicating a complex assembly. The lighting highlights the metallic and industrial aspects, providing a detailed look at the pistons and gears.

Analysis Of Common Problems Of Customer Systems

Although modern excavators generally use high-performance hydraulic systems, due to long-term operation, high-load conditions and harsh construction environments, hydraulic systems often face the following problems

Close-up view of a metal mechanical component with interconnected rods and cylindrical gears, featuring metallic surfaces with various finishes, surrounded by industrial machinery parts.
Close-up view of a metal mechanical component with interconnected rods and cylindrical gears, featuring metallic surfaces with various finishes, surrounded by industrial machinery parts.
Decreased Efficiency Of Hydraulic Pumps
Problem manifestation:
Slow excavation and arm lifting, weak equipment output
Root cause:
Serious wear of the internal matching of the variable piston pump, reduced volumetricefficiency
A close-up of a metallic mechanical component featuring green painted parts, a brass or bronze fitting, and a threaded pipe extending vertically. The focus is on the industrial equipment, showing the textures and details of the metal surfaces.
A close-up of a metallic mechanical component featuring green painted parts, a brass or bronze fitting, and a threaded pipe extending vertically. The focus is on the industrial equipment, showing the textures and details of the metal surfaces.
Leakage Or Instability Of Hydraulic Motors
Problem manifestation:
Equipment slips, vibrates or delays in response during rotation or walking
Root cause:
Aging of motor seals, increased internal leakage, and fatigue damage of parts
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