Tractor Cabin Vibration Mitigation Using Elastic Cylinder Links
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Solution Overview
Problem
Existing tractors fail to effectively mitigate vibrations transmitted from the vehicle body to the cabin, leading to reduced riding comfort and impression for the user, as current solutions like rubber elastic bodies and hydraulic cylinders are insufficient in absorbing vibrations in various directions.
Innovation Solution
A tractor design featuring links and elastic cylinders to connect the cabin and transmission, with elastic members and dampers to absorb vibrations in multiple directions, including upward, downward, lateral, and horizontal impacts, using a configuration of links and guide frames to enhance vibration mitigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If rubber elastic bodies are installed to surround fastening members connecting the transmission and cabin, then some vibration absorption is achieved, but the vibration transmitted from the transmission to the cabin remains too strong for the elastic body to absorb effectively
Solution Approach 1:
The patent introduces links as intermediary components between the transmission and cabin, with elastic cylinders installed on these links. The links serve as mediator structures that allow the elastic cylinders to effectively absorb vibrations in multiple directions, resolving the insufficiency of direct elastic body installation around fastening members.
Solution Approach 2:
The patent transitions from single-direction vibration absorption (using rubber elastic bodies around bolts) to multi-directional vibration absorption by installing elastic cylinders on links that can accommodate vibrations in various directions including lateral and vertical movements, thereby addressing the limitation of directional vibration mitigation.
2Object-affected harmful factors
If hydraulic cylinders with oil are installed between the cabin and vehicle body frame to absorb impact, then vertical vibration is reduced, but vibrations occurring in various directions cannot be effectively mitigated
Solution Approach 1:
The patent makes the vibration mitigation system universal by installing elastic cylinders on multiple links (front links, rear links, lateral links) that can handle vibrations in various directions. This multi-functional arrangement allows the same elastic cylinder mechanism to address vertical, lateral, and horizontal vibrations, making the system adaptable to multi-directional vibration scenarios.
Solution Approach 2:
The patent segments the vibration mitigation function by distributing multiple elastic cylinders across different links and positions (front, rear, lateral). Each elastic cylinder handles specific directional vibrations, and collectively they provide comprehensive multi-directional vibration absorption, overcoming the single-direction limitation of hydraulic cylinders.
3Stability of the object's composition
If the cabin is directly connected to the transmission using rigid brackets and fastening members, then structural stability is maintained, but vibrations are transmitted directly to the cabin reducing riding comfort
Solution Approach 1:
The patent introduces links as intermediary components between the rigid transmission structure and the cabin. These links, combined with elastic cylinders, serve as mediators that maintain the structural connection while filtering out vibrations, thereby preserving structural stability while reducing vibration transmission to the cabin.
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 proposed design significantly improves riding comfort by effectively reducing vibrations in various directions, enhancing the user's experience by mitigating impacts and shakes during tractor operation.
Implementation Method 1
front elastic cylinders installed at one side of the links, an elastic member surrounding the front elastic cylinders to mitigate vibrations of the cabin
Implementation Method 2
rear elastic cylinders having one end coupled to a rear portion of the cabin and the other end coupled to a rear portion of the transmission to connect the cabin and the transmission at a rear portion, an elastic member surrounding the elastic cylinders to mitigate vibrations of the cabin
Data Source
AI summary
A tractor includes a cabin composed of a plurality of frames; a vehicle body installed at an lower portion of the cabin and composed of a guide bar, an engine and a transmission to supply power; links connecting the cabin and the transmission at a front portion; first and second front elastic cylinders installed at one side of the links; and first and second rear elastic cylinders connecting the cabin and the transmission at a rear portion.