Telescopic Boom Coupling Pin With Manual Motor-Failure Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing work machines with telescopic booms face issues where the coupling mechanism between adjacent booms can fail, preventing the telescopic boom from contracting if the mechanism breaks, leading to operational failures.
Innovation Solution
A work machine equipped with a manual operation mechanism that allows the coupling between adjacent booms to be released manually, utilizing a boom coupling pin moved by a spring for insertion and a motor for removal, supported by booms, and a manual operation member coaxially integrated with the pin to facilitate manual release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a motor-driven mechanism is used to release the coupling between booms, then the automation and ease of operation are improved, but the reliability deteriorates because the system becomes dependent on motor functionality
Solution Approach 1:
The patent introduces a manual operation member as an intermediary mechanism that can directly move the boom coupling pin when the motor fails. This manual member acts as a backup pathway, allowing operators to bypass the motor-driven system and directly manipulate the coupling pin to release boom couplings, thereby maintaining reliability while preserving automated operation capabilities
Solution Approach 2:
The patent incorporates a spring mechanism that stores elastic energy in advance to assist in moving the boom coupling pin during coupling release. This pre-stored energy serves as a cushioning backup force that can activate the pin movement even when motor power is insufficient or unavailable, ensuring the system maintains operational reliability under failure conditions
2Extent of automation
If only a motor-driven system is used for coupling release, then the extent of automation is improved, but the device complexity increases due to additional components needed for manual operation
Solution Approach 1:
The manual operation member is designed with multi-functionality, serving both as a backup emergency release mechanism and as part of the normal coupling release system. By making this single component capable of performing multiple functions (manual operation and assisting motor-driven operation), the patent avoids adding separate dedicated manual mechanisms, thereby reducing overall device complexity while maintaining high automation extent
Solution Approach 2:
The patent merges the manual operation capability with the existing motor-driven coupling release system by integrating the manual operation member into the same mechanical pathway. This merging allows both automated and manual operations to share common components like the boom coupling pin and guiding structures, reducing the need for separate independent systems and thereby lowering device complexity
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 manual release of boom couplings even if the motor fails, ensuring the telescopic boom can be contracted and extended effectively, enhancing operational reliability.
Implementation Method 1
a boom coupling pin that is moved in an insertion direction by a spring
Implementation Method 2
that is moved in a removal direction by power of a motor
Data Source
AI summary
This work machine includes: a plurality of booms that extend and contract by means of power of an actuator; a boom coupling pin which is supported by the booms, moves in the entering direction by means of a spring to turn into an entering state in which adjacent booms are coupled, and moves in the pulling direction by means of power of a motor to turn into a pulling state in which the coupling is released; and a manual operation member inserted into the boom coupling pin and disposed coaxially with the boom coupling pin. As the manual operation member rotates on the basis of the manual operation of an operator, the boom coupling pin moves in the pulling direction together with the manual operation member, and the coupling between adjacent booms is released.