Nonlinear Walking Apparatus for Heavy Load Positioning
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Solution Overview
Problem
Existing walking machines for moving heavy loads over small distances require time-consuming disassembly and reassembly, and often need to lower the load onto a base surface to change direction, which is inefficient for precise positioning.
Innovation Solution
A walking apparatus with a non-linear or circular traveling system using a lift cylinder, roller assembly, and control system that allows for precise movement along selectable horizontal paths, including straight, diagonal, curved, and arc paths, by utilizing a rotating middle frame and dual bull gear mechanisms to maintain load positioning and orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If walking machines use hydraulic lift cylinders to move heavy loads, then the loads can be transported over small distances, but the machines require the load to be lowered onto the base surface to change direction
Solution Approach 1:
The patent applies dynamics by making the support foot rotatable relative to the load bearing frame. The support foot can rotate about a vertical axis to change the direction of travel without requiring the load to be lowered onto the base surface. This dynamic adjustment of the support foot orientation enables the walking machine to change direction mid-air, improving both directional flexibility and movement efficiency.
2Measurement precision
If walking machines transport heavy loads incrementally, then precise positioning is achieved, but the process is time-consuming
Solution Approach 1:
The patent implements continuity of useful action by allowing the support foot to rotate continuously to adjust travel direction without interrupting the loading process. The load remains suspended and supported throughout the direction change, eliminating the time loss associated with lowering and repositioning the load. This continuous operation maintains positioning accuracy while reducing total transport time.
3Force
If walking machines use rollers or tracks to move loads, then heavy loads can be transported, but the structure becomes complex
Solution Approach 1:
The patent simplifies the structure by replacing complex roller or track systems with a footprint-based support system. The support foot acts as a simple contact element that distributes the load to the base surface, eliminating the need for intricate roller assemblies or track mechanisms. This approach maintains load bearing capacity while significantly reducing 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 efficient and precise movement of heavy loads over small distances with the ability to fine-tune their position, reducing the need for disassembly and improving directional changes without lowering the load onto a base surface, enhancing operational efficiency in oil rig and other heavy load applications.
Implementation Method 1
a lift mechanism including a lift cylinder 102 and lift rod 104 that raise the load bearing frame 101 off of and onto the base surface 130
Implementation Method 2
lower the load bearing frame 101 onto the base surface 130
Implementation Method 3
a first travel mechanism including a roller assembly 106 that moves the lift mechanism along a horizontal path
Implementation Method 4
a rotating middle frame and dual bull gear mechanisms to maintain load positioning and orientation
Data Source
AI summary
A load transporting apparatus is configured to move a load bearing frame carrying a load over a base surface. A support foot provides a first load bearing surface. A lift mechanism during a step operation raises the support foot off of the base surface, lowers the support foot onto the base surface, and raise the load off of the base surface. A first travel mechanism moves the lift mechanism and attached load along a non-linear horizontal path and a second travel mechanism moves the lift mechanism along a different horizontal path. A control system operates the first travel mechanism and the second travel mechanism to move the lift mechanism along a selected horizontal path.