Vehicle Winch Axial Motor Nesting for Compact Gear Train
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Solution Overview
Problem
Existing vehicle winches face issues with large size and excessive torque, leading to high production costs and structural inefficiencies due to the motor being placed outside the rope drum assembly, resulting in increased load bearing requirements and size constraints.
Innovation Solution
The vehicle winch design incorporates a primary planet gear train arranged between the motor assembly and the reducing gear train subassembly, with parts of the motor assembly and gear trains housed within the rope drum assembly, reducing the axial distance and torque requirements, and utilizing a compact gear train configuration to minimize size and enhance structural compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the motor assembly is placed outside the rope drum assembly, then the motor has sufficient space for cooling and maintenance, but the overall winch size increases and the structure becomes less compact
Solution Approach 1:
The motor assembly is nested within the rope drum assembly by placing it inside the drum cavity, allowing the motor to be housed within the existing structural envelope of the winch without increasing overall dimensions
Solution Approach 2:
The motor assembly is repositioned from an external radial arrangement to an internal axial arrangement within the drum cavity, changing the spatial dimension of motor placement to achieve compactness while maintaining functionality
2Strength
If the motor assembly is placed outside the rope drum assembly, then the motor has better heat dissipation, but the load bearing requirements and structural complexity increase
Solution Approach 1:
The motor assembly and rope drum assembly are merged into a single integrated structure where the motor is housed within the drum cavity, combining two previously separate components into one unified assembly that reduces overall structural complexity
Solution Approach 2:
The drum cavity serves multiple functions: it houses the motor assembly, provides structural support, and maintains the rotational axis alignment, thereby reducing the need for additional load-bearing structures
3Reliability
If a traditional gear train configuration is used, then the power transmission is reliable, but the axial distance and overall size of the winch increase
Solution Approach 1:
The planet gear train provides continuous power transmission from the motor output shaft to the rope drum input shaft along the same rotational axis, eliminating the need for long axial传动 paths while maintaining reliable torque transmission
Solution Approach 2:
The gear train is reconfigured from a traditional parallel shaft arrangement to a coaxial planet gear arrangement, where the sun gear, planet gears, and ring gear all share the same rotational axis, thereby minimizing axial distance
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
This design achieves a compact structure with reduced production costs, improved power transmission stability, and efficient load bearing, while allowing for low-speed rope retraction and release, enhancing the overall reliability and efficiency of the winch.
Implementation Method 1
The reducing gear assembly includes a primary planet gear train and a reducing gear train subassembly, the motor assembly, the primary planet gear train and the reducing gear train subassembly are sequentially arranged along the axial direction of the rope drum assembly
Data Source
AI summary
A vehicle winch includes a motor assembly, a rope drum assembly, and a reducing gear assembly. The rope drum assembly defines a drum cavity extending in an axial direction of the rope drum assembly, and a part of the motor assembly is arranged in the drum cavity. The reducing gear assembly includes a primary planet gear train and a reducing gear train subassembly, the motor assembly, the primary planet gear train and the reducing gear train subassembly are sequentially arranged along the axial direction, the primary planet gear train is arranged in the drum cavity, and the primary planet gear train has an input end coupled to an output end of the motor assembly and an output end coupled to an input end of the reducing gear train subassembly, and the reducing gear train subassembly has an output end coupled to an input end of the rope drum assembly.