Multi-Axial Mast Positioning System With Orthogonal Actuators
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Solution Overview
Problem
Existing mast positioning systems are limited in their ability to orient a mast beyond a maximum slope of 8 degrees due to the type of actuators used, their positioning relative to each other, and the existence of a pivot point at the far end of the mast, restricting the system's capability to achieve desired orientations.
Innovation Solution
A multi-axial mast positioning system utilizing two continuous rotation actuators oriented in orthogonal planes allows the mast to be positioned at any desired orientation, independent of its support structure, by using rotary actuators with high gear ratios and worm gear mechanisms to rotate the mast 360° about two orthogonal axes, eliminating the need for multi-member linkages and enhancing system rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional actuators with pivot points and linkages are used, then the system structure is simple, but the mast orientation capability is limited to maximum 8 degrees slope
Solution Approach 1:
The system divides the mast positioning function into two independent rotational actuators, each responsible for one axis of rotation. This segmentation allows each actuator to operate independently without mechanical interference, enabling the mast to achieve orientations beyond the traditional 8-degree limit while maintaining manageable system complexity through modular architecture
Solution Approach 2:
The invention transitions from single-axis rotation to dual-axis rotation by adding a second rotational degree of freedom. The first actuator rotates the mast about a first axis, and the second actuator rotates it about a second axis perpendicular to the first, creating multi-axial positioning capability that dramatically expands orientation possibilities
2Adaptability or versatility
If continuous rotation actuators are used to achieve 360° rotation about two orthogonal axes, then the mast can be positioned at any desired orientation, but the device complexity increases
Solution Approach 1:
Each continuous rotation actuator is designed to perform multiple functions: it provides 360-degree rotational movement, maintains positional holding capability through high gear ratios, and operates independently of the other actuator. This multi-functionality reduces the need for additional mechanical components such as linkages and pivot points, thereby limiting the increase in overall system complexity
Solution Approach 2:
The invention replaces traditional mechanical linkage systems with direct-drive continuous rotation actuators. Instead of using complex multi-member linkages to achieve mast rotation, the system uses two orthogonal actuators that directly rotate the mast, eliminating the need for intermediate mechanical transmission elements and reducing structural complexity
3Stability of the object's composition
If high gear ratios and worm gear mechanisms are used, then the system maintains stability on dynamic platforms, but the device complexity and size increase
Solution Approach 1:
The worm gear mechanisms inherently provide self-locking capability due to their mechanical design, where the gear teeth geometry prevents reverse motion without additional braking or locking mechanisms. This self-service feature automatically maintains mast position and platform stability without requiring external control systems or additional components, thereby achieving stability without proportional increase in system 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 mast to be oriented to any desired position, facilitating easy access and maintenance, and maintaining stability on dynamic platforms like moving vehicles, while reducing the size of the support structure required for the same range of motion.
Implementation Method 1
using rotary actuators with high gear ratios and worm gear mechanisms to rotate the mast 360° about two orthogonal axes
Data Source
AI summary
A tiltable telescoping support structure positioning system includes a frame having first and second opposed vertical sections. A telescoping support structure is disposed between the first and second opposed vertical sections, the telescoping support structure having a plurality of telescoping sections extendable from a base section along a longitudinal axis thereof. The base section of the telescoping support structure is tiltably coupled to the first and second opposed vertical sections to permit the base section to tilt along a first tilt path towards either of the first and second opposed vertical sections of the frame. A tilting mechanism is coupled between the base section of the telescoping support structure so as to tilt the telescoping support structure about a second tilt path aligned perpendicular to the tilt path between the first and second opposed vertical sections of the frame.