Double-Side Operating Coupler for Hump Shunting Reliability
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Solution Overview
Problem
Conventional couplers in railcars face inefficiencies and safety issues during hump shunting operations, where the success rate of coupling between cars is reduced due to the coupler knuckle returning to a locking position, hindering successful coupling and affecting operation efficiency and operator safety.
Innovation Solution
A double-side operating coupler design with uncoupling lever holes on both sides of the bottom locklift connector, allowing for reliable operation from either side, featuring keyhole-shaped through holes and uncoupling lever brackets that enable synchronized rotation and prevent interference between uncoupling levers, ensuring consistent operation and improved manufacturability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional single-side operating coupler is used, then the structure is simple, but the coupling success rate decreases during hump shunting operations
Solution Approach 1:
The coupler is divided into two independent operating systems, one for each side of the car body. Each side has its own uncoupling lever, bracket, and locklift mechanism that can operate independently. This segmentation allows either side to successfully uncouple the coupler during hump shunting operations, improving coupling success rate without requiring a completely new design.
Solution Approach 2:
The coupler system is designed to be universally operable from both sides of the car body. The bottom locklift connector serves both sides by accepting uncoupling levers from either side, and the keyhole-shaped through holes are configured to accommodate uncoupling levers from both sides. This multi-functionality ensures reliable operation regardless of which side the operator stands on.
2Reliability
If uncoupling levers are added to both sides, then operation reliability improves, but device complexity increases
Solution Approach 1:
The uncoupling mechanisms from both sides are merged into a single integrated system. The bottom locklift connector serves as a common component that receives uncoupling levers from both sides. The keyhole-shaped through holes are designed to accommodate uncoupling levers from either side, combining two separate operating mechanisms into one unified structure that reduces overall complexity.
Solution Approach 2:
The bottom locklift connector and its associated components are designed with multi-functionality to serve both sides of the car body. The keyhole-shaped through holes are configured to accept uncoupling levers from either side, and the locklift mechanism can be actuated by either side's uncoupling lever, reducing the need for completely separate mechanisms.
3Ease of operation
If the coupler knuckle returns to locking position during humping, then the coupler maintains security, but coupling operation fails
Solution Approach 1:
The uncoupling lever is designed to perform preliminary action by continuously maintaining the coupler knuckle in the uncoupling position during humping operations. The restrained segment with rectangular cross-section and the keyhole-shaped through hole configuration ensure that the uncoupling lever remains engaged and prevents the coupler knuckle from returning to the locking position, enabling successful coupling operation.
Solution Approach 2:
The uncoupling lever acts as an intermediary mechanism between the operator and the coupler knuckle. The restrained segment with rectangular cross-section fits into the keyhole-shaped through hole, creating a mechanical intermediary that maintains continuous engagement and prevents the coupler knuckle from returning to the locking position during humping operations.
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
Enhances the success rate of coupling in marshalling by allowing successful coupling of cars even when the back coupler is in a non-full open position, improving operation efficiency and safety by enabling reliable uncoupling from either side during hump shunting.
Implementation Method 1
The bottom locklift connector is provided between the bottom locklift toggle and the bottom locklift hook in a hinged manner
Implementation Method 2
uncoupling lever holes are provided at ends of both sides of the bottom locklift connector of the coupler so as to allow the bottom locklift connector to rotate about the bottom locklift hook under the action of the uncoupling lever
Data Source
AI summary
A lower locking pin body for the hinge joint between a lower locking pin and a lower locking pin hook has a suspending hole of a coupler lock lifter to facilitate it rotating surrounding the lower locking pin hook under the effect of the hole. There are two coupler suspending holes which are respectively arranged on each side ends of the lower locking pin body to facilitate the workers opening the coupler on either side of a car. A two-side operating coupler with above said lower lock pin body and a draft gear are provided, wherein the draft gear also includes two lock lifters and two lock lifter seats. The lock lifters are mounted into a key-shaped hole of the lock lifter seats, and the lock lifter has a limiting segment on the matched position. Two hook head ends of the lock lifters pass respectively out from the key-shaped holes of the coupler lock lifter seats and hang with the coupler lock lifter suspension hole of the two-side operating coupler. It has clearance between the limiting segment of the coupler lock lifter and a stripe-shaped hole wall of the key-shaped hole.