Hydraulic Torque Converter Winch Layout for Stable Dynamic Compaction
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Solution Overview
Problem
Current dynamic compactor transmission systems face inefficiencies due to interference between hydraulic and mechanical transmissions, inability to achieve stepless torque and speed changes, inconvenient assembly and maintenance, and unstable hydraulic system pressure fluctuations, which affect reliability and stability during construction operations.
Innovation Solution
A hydraulic torque converter transmission system that includes an engine, hydraulic torque converter, winch, transfer case, gearbox, and reduction gearbox, allowing for independent unit arrangement and forced cooling, enabling stepless torque and speed changes, improved reliability, and reduced interference between hydraulic and mechanical transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If hydraulic coupling is used for power transmission, then the transmission system is compact and lightweight, but stepless torque and speed change cannot be realized
Solution Approach 1:
The patent combines hydraulic coupling with mechanical variable speed transmission mechanisms (winch drum with variable radius, pulley system) to merge the advantages of both systems. The hydraulic coupling provides compactness and lightweight design, while the mechanical components enable stepless torque and speed change through variable transmission ratio
Solution Approach 2:
The transmission system is designed to perform multiple functions: the hydraulic coupling handles power transmission and damping, while the mechanical variable speed mechanism handles torque multiplication and speed adjustment. This multi-functional design resolves the contradiction by making each component specialized
2Device complexity
If engine and winch are arranged in parallel in horizontal direction, then the layout is simplified, but the operating platform becomes ultra-wide and oversize
Solution Approach 1:
The patent transitions from horizontal parallel arrangement to vertical stacking arrangement, utilizing the vertical dimension to reduce the horizontal footprint. The engine, transmission components, and winch are arranged vertically or in compact three-dimensional configurations, maintaining layout simplicity while significantly reducing the operating platform area
3Adaptability or versatility
If power is transmitted from engine to hydraulic pump through hydraulic torque converter, then the transmission system is integrated, but transmission efficiency decreases
Solution Approach 1:
The patent extracts the hydraulic torque converter from the main power transmission path to specific auxiliary functions only. The primary power transmission from engine to winch uses direct mechanical coupling or hydraulic coupling without torque converter, maintaining high efficiency. The torque converter is retained only where needed for specific control functions
Solution Approach 2:
The patent replaces hydraulic torque converter with mechanical variable speed transmission mechanisms in the main power path. This substitution eliminates the energy losses associated with hydraulic torque converters while maintaining the integrated transmission system design through coordinated mechanical-hydraulic operation
4Adaptability or versatility
If hydraulic pump and winch work simultaneously with intermittent engine operation, then the system is flexible, but hydraulic system pressure fluctuates greatly
Solution Approach 1:
The patent incorporates energy storage components (flywheel, hydraulic accumulator) that cushion pressure fluctuations before they affect the hydraulic system. These components absorb excess energy during high-pressure periods and release it during low-pressure periods, maintaining stable operation during intermittent engine cycling
Solution Approach 2:
The patent implements pressure feedback control mechanisms that monitor hydraulic system pressure and adjust the hydraulic pump operation or engine power delivery in real-time. This feedback loop maintains stable pressure despite intermittent operation by dynamically balancing supply and demand
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enhances construction reliability and stability by allowing for modular, compact design, convenient maintenance, and improved transmission efficiency, reducing hydraulic system pressure fluctuations and accommodating various operating platforms.
Implementation Method 1
a hydraulic torque converter transmission system for dynamic compactor including an engine, a hydraulic torque converter, and a winch, wherein power of the engine is transmitted to the winch by means of the hydraulic torque converter
Implementation Method 2
allowing for independent unit arrangement and forced cooling
Data Source
Figure 1~2
AI summary
A hydraulic torque converter transmission system for a dynamic compactor and the dynamic compactor includes: an engine (1), a hydraulic torque converter (4), a winch (10); the power of the engine (1) is transmitted to the winch (10) by means of the hydraulic torque converter (4). By adopting the hydraulic torque converter (4) to drive the winch (10) to rotate, the effects of torque transfer, stepless torque conversion, stepless speed change and clutching can be achieved, the reliability and the stability of dynamic compaction are improved, and high-strength dynamic compaction construction requirements can be satisfied. In addition, by adopting the modular design and the arrangement mode, the transmission efficiency is improved; the transmission device is flexible in arrangement, can be suitable for different operation platforms, and is convenient to install and maintain; an operation platform of the dynamic compactor is small in width and light in weight; and a hydraulic pump and the winch are not interfered with each other.