Motorcycle Engine Hoist Lateral Removal Mechanism
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Solution Overview
Problem
Conventional engine hoists are not suitable for motorcycle engines due to their design, which requires upward removal, and existing methods for lateral removal are time-consuming, risky, and pose safety concerns.
Innovation Solution
A specialized engine hoisting assembly with a ground-supporting frame, a horizontal boom, and lifting means that allows for safe and efficient lateral removal of motorcycle engines by connecting to the engine and supporting its weight, facilitating easy installation and removal without the need for excessive manpower.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional automotive engine floor hoists are used, then engines can be removed upward, but such hoists are not suitable for motorcycle engines because the motorcycle's frame, gas tank and seat block the upward direction
Solution Approach 1:
The patent inverts the conventional upward removal approach by implementing a lateral removal system. The hoist assembly is positioned alongside the motorcycle and removes the engine in a lateral direction rather than upward, directly addressing the spatial constraints imposed by the motorcycle's frame, gas tank and seat.
Solution Approach 2:
The patent transitions from vertical (upward) engine removal to horizontal (lateral) removal by repositioning the hoist assembly and changing the removal vector. This dimensional change allows the engine to be extracted through the side of the motorcycle where there is sufficient clearance, bypassing the obstacles in the upward path.
2Adaptability or versatility
If the motorcycle is tilted on its side to remove the engine, then the engine can be accessed laterally, but this practice is time consuming and risks damaging the engine and motorcycle
Solution Approach 1:
The patent introduces a specialized hoist assembly with engine-contacting members as an intermediary device between the motorcycle and the removal process. This intermediary provides controlled, stable support for the engine during lateral extraction, eliminating the need to tilt the motorcycle and thereby preventing damage to both the engine and motorcycle.
Solution Approach 2:
The patent implements protective measures beforehand by using the hoist assembly to support and control the engine throughout the removal process. The engine-contacting members and structured support system prevent accidental drops or uncontrolled movements that could cause damage, cushioning against potential harm before it can occur.
3Adaptability or versatility
If the motorcycle is tilted on its side for engine removal, then lateral access is achieved, but safety concerns arise such as being pinned or trapped underneath the motorcycle
Solution Approach 1:
The hoist assembly serves as a safe intermediary that performs the dangerous task of lateral engine removal without requiring the operator to position themselves in hazardous locations. The mechanical system handles the heavy engine extraction, keeping operators at a safe distance from the motorcycle and eliminating pinching or trapping risks.
Solution Approach 2:
The patent implements a self-service mechanism where the hoist assembly autonomously performs the engine removal task through its powered or mechanically-assisted system. This eliminates the need for manual tilting operations and reduces human exposure to safety hazards by allowing the machine to service itself in the removal process.
4Weight of moving object
If three men are used to lift the engine, then the heavy engine can be removed, but this requires additional manpower that may not be available
Solution Approach 1:
The patent replaces the manual mechanical system of three people lifting with a mechanical hoist assembly that uses mechanical advantage, hydraulic or electric power assistance, or a combination thereof. This substitution allows a single operator to control the removal of heavy engines, providing independence of operation while maintaining the ability to handle significant engine weights.
Solution Approach 2:
The hoist assembly acts as a mechanical intermediary that bridges the gap between the heavy engine weight and the capability of a single operator. The device translates small input forces into large output forces through mechanical advantage, allowing one person to effectively perform the work that would otherwise require three people.
Data Source
AI summary
An engine hoisting assembly for supporting an engine comprises a ground supporting frame, a substantially upright member having a longitudinal axis, a boom operably connected to the upright member, lifting means to selectively move the boom up or down along upright member's longitudinal axis and engine connecting means to operably connect the boom to the engine. The boom is maintained at a substantial horizontal orientation when lifting means selectively moves boom up or down.