Electric Starter Manual Turning Mechanism for Flywheel Positioning
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Solution Overview
Problem
Traditional electric starters lack a manual turning function, leading to safety hazards and inefficiencies during motor maintenance, as operators rely on steel crowbars for low-speed rotation, which can cause accidents or equipment malfunctions.
Innovation Solution
An electric starter with integrated gear shifting and turning mechanisms, including a normally closed switch for power cutoff, a positioning component for locking, and a return spring for automatic reset, allows for precise manual turning of the flywheel gear without altering the existing housing, ensuring safety and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a steel crowbar is used to lever the flywheel gear for manual turning, then low-speed precise rotation can be realized, but safety hazards occur and efficiency is low
Solution Approach 1:
The manual turning function is segmented from the electric starting function into a separate mechanism. The gear shifting mechanism and turning mechanism are independently designed with separate force receiving components, allowing manual operation without interfering with the electric starting system, thereby eliminating safety hazards while maintaining low-speed rotation capability
Solution Approach 2:
A gear shifting mechanism acts as an intermediary between the manual turning operation and the flywheel gear. The mechanism includes a force receiving component that translates manual input into controlled gear engagement, providing a safe intermediary interface that eliminates the need to directly lever the flywheel gear with a crowbar
2Speed
If an electric starter is used for motor starting, then high-speed rotation of the flywheel gear is achieved, but manual turning function is lost
Solution Approach 1:
The electric starter housing is designed to accommodate multiple functions: the original electric starting function and the new manual turning function. The gear shifting mechanism and turning mechanism share the same housing space, allowing the device to perform both high-speed electric starting and low-speed manual turning operations
Solution Approach 2:
The manual turning mechanism is merged with the existing electric starter structure. The force receiving component, gear shifting mechanism, and turning mechanism are integrated into the housing, combining the manual turning capability with the existing electric starting function in a single unified device
3Adaptability or versatility
If the gear shifting mechanism and turning mechanism are added to the electric starter, then manual turning function is achieved, but device complexity increases
Solution Approach 1:
The turning mechanism is nested within the existing electric starter housing. The force receiving component, gear shifting mechanism, and turning mechanism are arranged in a compact nested configuration that utilizes the available space within the housing, minimizing the increase in overall device complexity while adding the manual turning function
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 solution provides a safe and efficient manual turning function for motor maintenance, eliminating potential hazards and improving operational efficiency by enabling precise positioning of the flywheel gear without compromising the existing electric starter functionality.
Implementation Method 1
a first return spring (5) arranged in the housing of the electric starter... a first return component which enables the force receiving component to automatically returns to an original state
Implementation Method 2
a second return spring (15) arranged on a right side of the pushrod mechanism... the pushrod automatically returns to an original state under a restoring force of the second return spring
Data Source
AI summary
Disclosed is an electric starter with a manual turning function. A main shaft, a drive gear mechanism, a shift fork, an electromagnetic relay guide rod and a first return spring are arranged in a housing of the electric starter. A gear shifting mechanism comprises a force receiving component which extends out of the housing of the electric starter and serves as an external force applying point so as to promote the electromagnetic relay guide rod to move rightwards, a normally closed switch for cutting off a power supply of the electric starter when the force receiving component moves to an extreme position, a positioning component for locking the force receiving component when the force receiving component moves to the extreme position, and a first return component which enables the force receiving component to automatically returns to an original state when the force receiving component is unlocked. The main shaft is indirectly driven to rotate by the turning mechanism via a transmission mechanism or directly driven to rotate by the turning mechanism via a turning tool. An improvement is made to a structure of a traditional electric starter without affecting existing functions thereof, i.e., a function of manual turning is added. Therefore, a flywheel gear of a motor can be precisely positioned during maintenance so as to improve efficiency and eliminate potential safety hazards.