Remote Extendable Ladder Cable Pulley Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current multi-form ladders require direct grasping and laying down on the ground for reconfiguration, making the process inefficient and labor-intensive.
Innovation Solution
The use of pulleys and hoist ropes allows for the extension and retraction of ladder sections while standing on the ground, enabling indirect control and reducing the need for manual handling and ground placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the ladder is laid on the ground for reconfiguration, then the ladder sections can be easily reconfigured, but the process takes time and effort
Solution Approach 1:
A cable system acts as an intermediary mechanism between the user and the ladder sections. The cable connects to the fly section and base section, allowing the user to extend or retract sections by pulling or releasing the cable from a remote position, eliminating the need to physically grasp and manually move the heavy ladder sections
Solution Approach 2:
The manual mechanical system of directly grasping and moving ladder sections is replaced with a cable-pulley system. The cable runs through guides and attaches to the ladder sections, converting direct manual handling into a remote cable-pulling operation that reduces physical effort and time
2Ease of operation
If the ladder sections are extended by direct grasping, then the sections can be moved to the desired position, but the process requires significant manual effort
Solution Approach 1:
The cable serves as a force-transmitting intermediary that connects the user's pulling action to the ladder sections. Instead of directly applying force to move the heavy sections, the user pulls the cable which transmits this force through guides and attachments to extend the fly section relative to the base section with minimal effort
Solution Approach 2:
The extension mechanism operates in a different dimensional space by using a cable that runs through guides and attaches at strategic points. This allows the user to apply force in a convenient direction (pulling the cable) rather than directly lifting or pushing the heavy ladder sections, effectively changing the dimension of force application
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
Facilitates efficient and effortless reconfiguration of multi-form ladders by allowing users to adjust and extend/retract sections while maintaining the ladder's upright position, enhancing convenience and reducing effort.
Implementation Method 1
by using pulleys and hoist ropes
Implementation Method 2
The present invention pertains to a multipurpose ladder which can be extended or retracted while either in the A mode or as a straight ladder, without having to be placed on the ground, by using pulleys and hoist ropes
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A multipurpose ladder having a first pulley attached adjacent a top of a first base right rail. The ladder includes a first anchor attached adjacent a bottom of the first fly right rail. The ladder comprises a first cable having a free end and a fixed end. The fixed end attached to the first anchor. The first cable extending from the first anchor about the first pulley and past the first pulley so the free end extends past the first pulley. When the free end is pulled, the first fly right rail is moved relative to the first base right rail by the first cable engaged with the first pulley and the fixed end attached to the first anchor. A method for using a multipurpose ladder. A method for producing a multipurpose.