Chain Lock Pin Link Structure for Corrosion-Resistant Removal
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Solution Overview
Problem
Chain locks used in high-tensile load applications, such as conveyor chains, face difficulties in being opened when exposed to corrosive environments, as corrosion can prevent the secure pin from being driven out, leading to locking issues.
Innovation Solution
A chain lock design featuring two pin links with adjustable pressure bodies and a clamping mechanism that allows for a form-fitting connection, enabling the secure pin to be easily removed even in corrosive conditions, utilizing a locking pin to pre-tension the pressure bodies for secure engagement and disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional securing pin is used in a corrosive environment, then the chain lock provides initial secure engagement, but the pin becomes difficult or impossible to remove due to corrosion
Solution Approach 1:
The securing pin is divided into two separate pin links that are connected through the chain lock. This segmentation allows one pin link to remain embedded in the lock while the other can be easily removed, solving the corrosion problem by separating the permanent anchoring function from the removable operation function
Solution Approach 2:
A locking pin acts as an intermediary element to connect the two pin links. The locking pin can be easily inserted and removed to join or separate the pin links, providing a simple operational interface that doesn't suffer from corrosion issues affecting the main securing function
2Reliability
If pressure bodies are used to create a form-fitting connection, then the engagement security is improved, but the device complexity increases
Solution Approach 1:
The pressure bodies are designed to be movable within their openings, allowing them to be compressed by the locking pin to create a dynamic form-fitting connection. This dynamic mechanism provides secure engagement without requiring complex fixed structures
Solution Approach 2:
The pressure bodies are nested within openings in the first pin link, and the second pin link is nested over the connecting section. This nested arrangement creates a compact form-fitting connection that secures the pin links together without excessive structural 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 the chain lock to be opened and closed multiple times without impairment, ensuring functionality even in corrosive environments by using pressure bodies that can be pre-tensioned and adjusted for a secure form-fit connection, allowing for easy removal of the secure pin.
Implementation Method 1
a plurality of pressure bodies, which are adjustable in the radial direction and arranged in respective pressure body openings that open into the axial channel, are held in the connecting section of the first pin link, with each pressure body having a radial extent that is greater than a radial extent of the pressure body opening at the axial channel
Implementation Method 2
when the pin links are being connected, the pressure bodies are brought, by a locking pin inserted into the axial channel, into engagement in the radial direction to clamp them with the second pin link under pre-tension and/or in a form-fitting manner
Data Source
AI summary
A chain lock for a link chain has two lock parts which engage in a formfitting manner in the tensile load direction of the chain lock, and a securing pin which, mounted transversely to the plane of the flat side of the chain lock, engages in opposing seats of the lock parts. The securing pin has a first and a second pin link. Each pin link has a stop which cooperates with a stop surface of the pin seat in the transverse direction to the plane of the flat side of the chain lock. The first pin link extends, starting from its stop which interacts with one stop surface of the pin seat, beyond the other stop surface of the pin seat. This section extending beyond the second stop surface is provided as a connecting section for connecting the second pin link. Multiple pressure bodies are held in the connecting section, each of which is adjustable in the radial direction and arranged in an opening which opens into an axial channel. A locking pin is inserted into the axial channel, whereby the pressure bodies are brought into engagement in the radial direction with the second pin link under pre-tension and/or in a form-fitting manner with the inwardly facing lateral surface of the second pin link.