Work Vehicle Clutch Cable Routing and Swelling Control
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Solution Overview
Problem
Existing work vehicles face challenges in smoothly disconnecting and reconnecting the clutch without unintended engagement, particularly due to vibrations and operational forces, which can lead to inefficient operation and operator inconvenience.
Innovation Solution
The design incorporates a flexible control cable system with an outer tube and inner cable wound on a partition wall, along with a link mechanism and elastic members, allowing the clutch to disconnect and reconnect smoothly by swinging the clutch lever, while the latch and retain members prevent cable swelling and unintended disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a control cable is used to connect the clutch pedal to the clutch lever, then the clutch can be disconnected and connected by pedal operation, but the cable may swell or disengage from the partition wall due to vibrations and operational forces
Solution Approach 1:
The control cable is segmented into an outer tube and an inner cable that can slide relative to each other. This segmentation allows the inner cable to move independently for clutch operation while the outer tube maintains the routing path along the partition wall, preventing swelling and disengagement.
Solution Approach 2:
The control cable is pre-wound along the partition wall of the cabin before operation. This preliminary routing arrangement ensures that the cable follows a predetermined path that resists swelling and disengagement during clutch operations, while still allowing smooth movement when needed.
2Adaptability or versatility
If the control cable is wound on the partition wall to provide flexibility, then the cable can accommodate vibrations and movements, but the cable may swell within the winding region
Solution Approach 1:
The control cable is divided into an outer tube and an inner cable. The outer tube is wound along the partition wall to provide flexibility and accommodate vibrations, while the inner cable slides within it to maintain precise positioning and prevent swelling in the winding region.
Solution Approach 2:
The outer tube acts as an intermediary between the partition wall and the inner cable. It allows the inner cable to move smoothly for clutch operation while the outer tube maintains contact with the partition wall, preventing the cable system from swelling or disengaging.
3Ease of operation
If the inner cable is made slidable within the outer tube for smooth operation, then the clutch can be disconnected and connected smoothly, but the cable assembly becomes more complex
Solution Approach 1:
The control cable is segmented into two functional parts: an outer tube for routing and stability, and an inner cable for movement. This segmentation enables smooth clutch operation while keeping each component relatively simple in structure.
Solution Approach 2:
The outer tube serves multiple functions: it guides the inner cable, maintains the routing path along the partition wall, and prevents swelling. This multi-functionality reduces the need for additional components, keeping the overall assembly simple despite the slidable design.
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 configuration ensures smooth clutch operation, reducing unintended disconnections and connections, enhancing operator ease and vehicle efficiency by absorbing vibrations and providing consistent clutch engagement and disengagement.
Implementation Method 1
a first elastic member to bias the clutch operation mechanism so as to shift the fourth end of the pedal component toward the clutch
Implementation Method 2
This configuration ensures smooth clutch operation, reducing unintended disconnections and connections, enhancing operator ease and vehicle efficiency by absorbing vibrations
Data Source
AI summary
A work vehicle includes a shaft supported by a cabin and having a center axis. A clutch pedal is supported by the shaft so as to be swingable about the center axis. A control cable includes an outer tube and an inner cable slidably inserted to the outer tube. The control cable is wound on a partition wall of the cabin and has flexibility. The at least one latch member is configured to latch the control cable onto the partition wall. The at least one retain member is configured to restrict the control cable from swelling within a winding region of the partition wall. The outer tube has a first longitudinal end connected to the cabin and a second longitudinal end connected to a clutch housing. The inner cable has a first longitudinal end connected to the clutch pedal and a second longitudinal end connected to the clutch lever.