Research on Parameter Design of Multi - axis Hydrostatic Transmission Vehicle
DOI: 10.1051/matecconf/201713900215
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Summary
This paper addresses the parameter design and matching of the driving system for multi-axis hydrostatic transmission vehicles, such as concrete mixer trucks and large fire engines. The research is motivated by the need for flexible power transmission layouts and stepless speed regulation in special chassis applications. The authors aim to provide a reliable theoretical basis for designing hydraulic motors, pumps, system working pressures, and braking systems by analyzing the working principles and control strategies of single-side drive hydrostatic transmission. The study employs a theoretical approach based on vehicle driving equations and engine-hydraulic pump matching characteristics. The authors analyze the external characteristics of the engine, determining that optimal fuel consumption occurs at a 90% load rate. Using the least squares method, they establish the relationship between engine output torque and speed to derive the hydraulic pump’s displacement control curve. The vehicle’s driving force requirements are calculated for two specific scenarios: maximum speed on flat ground and maximum climbing on a 30% gradient. Specific vehicle parameters used in the calculations include a mass of 84,000 kg, a wind resistance coefficient of 0.8, a rolling resistance coefficient of 0.012, and a maximum design speed of 80 km/h. The results indicate that the required driving force for maximum speed is 11.2 kN, while the force required for maximum slope climbing is 24.6 kN. Based on these forces, the authors calculate the necessary hydraulic motor torque and system working pressure. An engineering case analysis selects a Rexroth A11VO190 variable pump and an A6VM200 variable motor. The calculated working pressure range for the hydraulic motor is 174–318 bar, which aligns well with the nominal pressures of the selected components (350 bar for the pump and 400 bar for the motor). Furthermore, the braking system parameters are determined, yielding a maximum running braking torque of 210 kN·m, a maximum braking deceleration of 3.77 m/s², and a parking brake torque of 795 N·m. The significance of this work lies in providing a systematic method for parameter matching in hydrostatic drive systems. By linking engine performance with hydraulic component specifications, the study ensures that the vehicle meets both power and speed requirements while maintaining efficient operation. The derived parameters for the hydraulic motor, pump, and braking system offer a practical foundation for the design and optimization of multi-axis hydrostatic transmission vehicles, contributing to the advancement of construction machinery chassis technology.
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| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | DOAJ | — | — | 1 | 2026-06-25 |
| archive | success | unpaywall | — | — | 1 | 2026-06-26 |
| extract | success | cached | — | — | 2 | 2026-06-26 |
| clean | success | clean | — | — | 1 | 2026-06-25 |
| chunk | success | chunk | — | — | 1 | 2026-06-25 |
| embed | success | embed | Qwen/Qwen3-Embedding-8B | — | 1 | 2026-06-25 |
| promote | success | — | — | — | 1 | 2026-06-25 |
| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 1 | 2026-06-26 |
| tag | success | vector_similarity | — | — | 6 | 2026-06-25 |
| verify | success | — | — | — | 1 | 2026-06-26 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-26; verification: verified.
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