A swing frame based whole vehicle suspension system, control method and loader

By using a vehicle suspension system based on a swing frame, multiple conversion methods for kinetic and electrical energy are achieved, solving the problems of vehicle body swaying and high energy consumption in complex working conditions, and improving vehicle stability and equipment performance.

CN120401584BActive Publication Date: 2026-06-02XCMG CONSTRUCTION MACHINERY CO LTD SCIENCE & TECHNOLOGY BRANCH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XCMG CONSTRUCTION MACHINERY CO LTD SCIENCE & TECHNOLOGY BRANCH
Filing Date
2025-03-31
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Loaders experience severe body swaying under complex working conditions, affecting operational accuracy and equipment lifespan, and also have high energy consumption and fail to meet emission standards.

Method used

The vehicle suspension system, based on a swing frame, utilizes a combination of sleeve-type hydraulic cylinders, a working gear pump circulation unit, a swing frame circulation unit, and a motor circulation unit to achieve multiple energy supply methods, converting kinetic energy into transmission oil flow potential energy and electrical energy. Combined with the cooling and lubrication of the motor and turbine pump, it provides vehicle stability and electrical energy storage.

Benefits of technology

It improves the stability and safety of the loader under harsh working conditions, reduces energy consumption and emissions, extends equipment life, and enhances equipment maneuverability and construction safety.

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    Figure CN120401584B_ABST
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Abstract

The application discloses a whole vehicle suspension system based on a swing frame, sleeve type oil cylinders are arranged between the swing frame and the drive axle on both sides; the whole vehicle suspension system comprises a working gear pump circulation unit, a swing frame circulation unit and a motor circulation unit; the working gear pump circulation unit realizes the whole vehicle basic driving function; the sleeve type oil cylinders absorb kinetic energy based on the angle change between the swing frame and the drive axle, the swing frame circulation unit converts the kinetic energy into the flow potential energy of transmission oil based on the sleeve type oil cylinders, and the whole vehicle additional driving function is realized; the motor circulation unit converts the flow potential energy of transmission oil into electric energy based on the swing frame circulation unit, and the whole vehicle power supply function and the whole vehicle additional driving function are realized; when the vehicle occurs yaw, the oil flow in the sleeve oil cylinder is compressed, the swing kinetic energy of the swing frame is converted into the flow potential energy of transmission oil, and the flow potential energy of transmission oil is converted into hydraulic oil pressure and stored electric energy provided for the vehicle body stabilizing system, the braking system and the battery system through subsequent devices.
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