Handrail Locking Mechanism for Mining Equipment
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Solution Overview
Problem
Existing handrail locking mechanisms for foldable handrails in machines, such as mining equipment, do not effectively allow for easy transition between upright and collapsed positions, leading to potential impacts during tunnel operations and hindrance of operator visibility and space.
Innovation Solution
A locking mechanism with a housing having side slots and a pivotally coupled locking member with first and second arms, allowing the handrail to be retained upright and easily converted to a collapsed position by releasing the first arm from the slots when the second arm is pulled upward.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a foldable handrail design is used to accommodate the machine in mine tunnels, then the adaptability of the machine is improved, but the handrail may not be securely retained in the upright position, leading to potential impacts and safety issues
Solution Approach 1:
The locking mechanism employs a dynamic locking member that can pivot between locked and unlocked positions. The locking member includes a first arm that engages with slots on the handrail and a second arm that can be actuated to release the lock, enabling the handrail to transition securely between upright and collapsed states
Solution Approach 2:
The locking mechanism is divided into distinct functional components: a housing that receives the handrail, a locking member with first and second arms, and slots on the handrail. This segmentation allows each component to perform its specific function independently while working together as an integrated system
2Reliability
If a complex locking mechanism is used to securely retain the handrail in the upright position, then the reliability is improved, but the ease of operation deteriorates due to difficulty in transitioning between positions
Solution Approach 1:
The second arm of the locking member serves as an intermediary actuation element. When the second arm is pulled upward, it pivots the locking member and causes the first arm to disengage from the slots. This intermediary mechanism translates a simple pulling motion into the complex action of releasing the lock
Solution Approach 2:
The locking mechanism is designed to be self-latching, where the first arm automatically engages with the slots when the handrail is in the upright position. The mechanism maintains its locked state without continuous input, and can be easily released by a simple pulling action on the second arm
3Reliability
If the handrail is retained securely in the upright position, then the safety is improved, but the operator visibility and space may be hindered when the handrail needs to be collapsed
Solution Approach 1:
The locking mechanism enables dynamic reconfiguration of the handrail system. The handrail can be securely locked in the upright position for safety during operation, and can be quickly collapsed when needed for improved visibility and space in confined tunnel environments
Solution Approach 2:
The locking member is positioned and configured so that the first arm is ready to engage with the slots on the handrail. The mechanism is pre-configured to automatically lock when the handrail is in the upright position, requiring no additional action to maintain safety
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 secure upright positioning and effortless conversion to a collapsed state, preventing handrail impacts and ensuring operator safety and visibility, with a compact design that allows for easy manufacturing and operation by hand or foot.
Implementation Method 1
a locking member (232) pivotally coupled to the bracket (220). The locking member (232) includes a first arm (234) and a second arm (236)... On exerting a force in an upward direction on the second arm (236), the second arm (236) is configured to selectively release the first arm (234) from the pair of slots (218)
Implementation Method 2
The first arm (234) is configured to selectively engage with the pair of slots (218) to retain the handrail (108) in the upright position
Implementation Method 3
On exerting a force in an upward direction on the second arm (236), the second arm (236) is configured to selectively release the first arm (234) from the pair of slots (218) to allow the handrail (108) to move from the upright position to the collapsed position
Data Source
AI summary
A locking mechanism associated with a handrail is provided. A pair of slots is provided on opposite side surfaces of the housing. Each of the side surfaces is adjacent to the side open end. A bracket is affixed to any one of the side surface of the housing. A locking member is pivotally coupled to the bracket. The first arm of the locking member is configured to selectively engage with the pair of slots to retain the handrail in the upright position. On exerting a force in an upward direction on a second arm of the locking member the first arm is selectively released from the pair of slots to allow the handrail to move from an upright position to a collapsed position.