Rope Adjuster Cam Carrier for Fast Rope Replacement
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Solution Overview
Problem
Conventional work positioning lanyards have a short useful life due to rope abrasion, as the rope cannot be easily replaced once worn, requiring disassembly of safety equipment in a workshop, which poses safety concerns.
Innovation Solution
A rope adjuster device with a rope bite and cam carrier system that allows for adjustable positioning and convenient rope replacement without removing the load connector, featuring a movable bite cam and pivot mechanism for easy lateral loading and unloading of the rope.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional adjusters are assembled with permanent connections (rivets), then structural strength and reliability are improved, but rope replacement becomes difficult requiring disassembly and workshop operations
Solution Approach 1:
The adjuster is divided into separable components: a permanent frame and a removable cam carrier assembly. The cam carrier can be detached from the frame to allow rope removal and replacement without disassembling the entire device or removing the load connector, while the permanent frame maintains structural integrity.
Solution Approach 2:
The cam carrier is designed to be dynamically removable and reattachable to the frame. This dynamic connection allows the rope to be accessed and replaced by removing the cam carrier, then reattaching it after rope replacement, without permanently disassembling the device.
2Reliability
If the rope bite is closed to prevent rope removal, then safety is improved, but rope replacement requires device disassembly
Solution Approach 1:
The rope retention function is segmented from the overall device structure. The cam carrier, which contains the rope bite mechanism, can be removed as a separate unit, allowing rope replacement while the frame remains intact and maintains safety features.
Solution Approach 2:
The cam carrier acts as an intermediary component between the user and the rope. By removing this intermediary, users can access and replace the rope without disassembling the frame or compromising the safety design of the closed rope bite system.
3Ease of operation
If the load connector must be removed for rope replacement, then complete rope access is achieved, but safety concerns and operational complexity increase
Solution Approach 1:
The device is segmented into three independent functional units: the frame with connector opening, the cam carrier with rope bite, and the rope. This segmentation allows the cam carrier to be removed for rope replacement while the frame with load connector remains attached and secure.
Solution Approach 2:
The connection between cam carrier and frame is made dynamic and reversible. The cam carrier can be quickly removed and reattached without tools or complex procedures, allowing rope replacement while keeping the load connector permanently secured to the frame.
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 prolonged device life by allowing easy rope replacement without disassembling the load connector, enhancing safety and convenience by maintaining the device's functionality without compromising safety protocols.
Implementation Method 1
a bite cam that is movable relative to the rope guide surface between a gripping position wherein a rope is gripped between the bite cam and the rope guide surface
Implementation Method 2
the cam carrier is connected to the frame to pivot relative to the frame between an open position wherein a rope can be loaded from the lateral side into the rope bite and a closed position wherein the lateral side is closed by the frame to prevent removal of a rope from the rope bite
Data Source
AI summary
A rope adjuster device (14) is provided for allowing adjustable positioning of a load along a rope (12) extending through the device and includes a rope bite (20), a cam carrier (22), and a frame (24). The bite is open on a lateral side (32) to allow loading of the rope into the bite by moving the rope laterally with respect to the length (26) of the rope. The frame defines a connector opening (60) to receive a load connector for attaching a load to the device. The frame extends from the opening (60) to a pivot location (62) whereat the cam carrier is connected to pivot relative to the frame between an open position wherein a rope can be loaded from the lateral side and a closed position wherein the lateral side is closed by the frame to prevent removal of the rope.