Trailer Driveshaft Locking Mechanism for Safe Clutch Engagement
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Solution Overview
Problem
Existing vehicles and trailers face challenges in safely transitioning between self-propelled and towed modes, especially on varying terrain, and efficiently managing construction debris disposal, particularly in locations inaccessible to large trucks.
Innovation Solution
A selectively engageable drive system with a locking mechanism that allows safe engagement and disengagement of a clutch assembly, utilizing a driveshaft, clutch elements, and a locking mechanism with plungers and urging members to control power transmission to the wheels, enabling conversion between self-propelled and towed modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a locking mechanism applies continuous urging force to engage the clutch assembly, then the engagement speed improves, but the reliability deteriorates because the clutch may engage under unsafe conditions (e.g., when teeth are misaligned or torque is present)
Solution Approach 1:
The locking mechanism performs preliminary actions by first rotating the clutch elements into proper alignment and then preparing the urging members (springs) to apply force. Only after these preparatory conditions are met does the mechanism apply the engagement force, ensuring that the clutch engages safely and reliably.
Solution Approach 2:
The mechanism incorporates feedback through the interaction between the urging members and the clutch assembly components. The urging members are positioned and activated only when the clutch elements are properly aligned and torque conditions are safe, providing a feedback-based control system that prevents premature or unsafe engagement.
2Productivity
If the vehicle is designed to be self-propelled, then the productivity improves by eliminating the need for a tow truck, but the device complexity increases due to the need for a locking mechanism to prevent unintended engagement
Solution Approach 1:
The locking mechanism is designed to be self-regulating, using the vehicle's own operational conditions (torque presence, clutch alignment) to control the engagement process. The urging members automatically prepare and apply force only when safe conditions are detected, eliminating the need for external control systems and reducing overall complexity.
Solution Approach 2:
The locking mechanism employs dynamic components including springs as urging members that can flex and adjust to varying operational conditions. The mechanism transitions between locked and unlocked states based on real-time conditions, providing adaptive control that simplifies the overall system design while maintaining safety.
3Loss of time
If the urging members are positioned close to the clutch assembly, then the response time improves, but the manufacturing precision requirements increase due to the need for precise alignment of plungers with bearing surfaces
Solution Approach 1:
The locking mechanism is divided into separate functional components: urging members (springs) positioned in recesses, plungers that transfer force, and bearing surfaces on the driveshaft. This segmentation allows each component to be manufactured and assembled independently with standard tolerances, reducing the need for high-precision alignment while maintaining fast response time.
Solution Approach 2:
The plungers serve as intermediary elements between the urging members and the driveshaft bearing surfaces. They transfer the urging force from the springs to the driveshaft, allowing the urging members to be positioned in accessible recesses rather than requiring direct contact with the driveshaft, thereby reducing manufacturing precision requirements while maintaining effective force transmission.
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
Enables safe and efficient operation on varying terrain, allowing vehicles to transition between self-propelled and towed modes, and facilitates debris disposal without damaging surrounding landscapes.
Implementation Method 1
a plurality of biasing devices, with each recess of the plurality of recesses receiving one biasing device of the plurality of biasing devices
Data Source
AI summary
A trailer for towing by a power vehicle is provided and generally includes a frame and a tandem wheel assembly. The trailer is provided with a drive assembly having a locking assembly to selectively engage the drive from the motor to the wheels of the trailer. The locking mechanism having a pushing member, and an urging member carrying a plurality of biasing devices and plungers inserted into radially arranged openings in the urging member, such that the plungers are biased against a bearing surface of the driveshaft to urge the driveshaft to shift in a direction, when the clutch assembly allows the driveshaft to shift laterally.