Comprehensive transmission device

By integrating power input, transmission, and steering into a single drive system, the problems of energy loss and sluggish steering response in tracked vehicle transmission systems are solved, achieving efficient and flexible steering and thermal management, thereby improving vehicle handling performance and fuel economy.

CN121246530APending Publication Date: 2026-01-02GUIZHOU AEROSPACE KAIXING INTELLIGENT TRANSMISSION CO LTD
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Patent Information

Application Number
CN202511291087.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-10
Publication Date
2026-01-02

AI Technical Summary

Technical Problem

Existing tracked vehicle transmission systems suffer from problems such as excessively long transmission links, severe energy loss, sluggish steering response, wear of transmission clutches, low energy efficiency, fixed turning radius, and insufficient thermal management.

Method used

Design an integrated transmission device that integrates power input, transmission, and steering convergence. Employ a six-speed automatic transmission with manual mode, a hydraulic torque converter, planetary gear assembly, and a bidirectional hydraulic pump motor to achieve stepless steering and center steering. Optimize power distribution through coaxial multi-stage gears and planetary gear assembly, and implement independent lubrication and thermal management.

Benefits of technology

It improves the integration and handling precision of tracked vehicles, reduces energy loss, enhances fuel economy, enables stepless steering and 360° rotation in place, and solves transmission system failures under high load conditions.

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Abstract

The invention relates to the technical field of vehicle transmission devices, and discloses a comprehensive transmission device which comprises a power input part, a speed change part and a steering confluence part, in the power input part, a power input shaft synchronously drives a main pump, a lubricating pump and a steering pump and drives a hydraulic torque converter to output power to the speed change part; the speed changing part is a six-gear manual-automatic integrated gearbox; the left end and the right end of the steering confluence part are provided with two identical planet wheel assemblies, and planet carriers of the planet wheel assemblies are responsible for power output. The steering pump drives the steering motor to drive sun gears of the planet gear assemblies at the left end and the right end. The steering and transmission decoupling design can well adapt to complex terrain steering of the vehicle, accessory centralized driving reduces engine load, and fuel economy is improved; the bottleneck of a traditional split type power chain is broken through, topological innovation of power distribution is achieved, efficiency and control precision are both considered, and hydraulic-mechanical fusion of speed change and steering is effectively completed.
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