Aerial Tool Configurations for Precision Trimming
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Solution Overview
Problem
Existing tree trimming methods around power lines are inefficient, lack precision, and pose safety risks to workers due to manual operations and limited reconfiguration of aerial tool assemblies, with prior solutions being slow, cumbersome, and prone to accidents.
Innovation Solution
A reconfigurable extendable boom mounted aerial apparatus with quick connect/disconnect sealable couplings for various tool configurations, allowing for semi-precise and precision tree trimming, debris handling, chemical spraying, and water blasting, featuring hydraulic, pneumatic, or water/chemical hoses, and an extendable grapple mechanism to manage cut limbs and debris safely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual tree trimming operations are used in insulated buckets, then worker safety is improved through insulation protection, but productivity deteriorates due to slow and cumbersome operations
Solution Approach 1:
The aerial apparatus is divided into modular components including the insulated boom, bucket, and detachable tool assemblies. Each tool assembly (chainsaw, grapple, sprayer) can be independently attached or detached, allowing rapid reconfiguration for different tasks while maintaining the insulated protective environment throughout the system.
Solution Approach 2:
The system transitions from static manual operations in a fixed bucket to dynamic automated operations with movable tool assemblies. The tool assemblies can be positioned and repositioned along the boom, and the grapple mechanism provides dynamic gripping and releasing actions to automate debris handling, significantly increasing productivity while workers remain protected in the insulated bucket.
2Productivity
If automated saw arms with rotating cutting mechanisms are used, then productivity is improved through faster cutting, but device complexity increases due to additional mechanical components
Solution Approach 1:
The cutting function is extracted from the main bucket assembly and placed in a separate, detachable tool assembly that can be mounted on the boom. This modular approach allows the complex automated cutting mechanism to be removed or replaced without affecting the core insulated bucket system, managing complexity through separation of functions.
Solution Approach 2:
The tool assemblies are designed with universal mounting interfaces that allow the same boom and bucket system to perform multiple functions by simply changing the attached tool assembly. A single insulated bucket can support chainsaw assemblies, grapple assemblies, sprayer assemblies, or other specialized tools, reducing overall system complexity through standardization.
3Adaptability or versatility
If multiple specialized tool assemblies are maintained for different tasks, then adaptability is improved for various trimming operations, but loss of time increases due to tool changes and reconfigurations
Solution Approach 1:
Multiple tool assemblies are pre-configured and prepared in advance for different task requirements. The quick-connect mechanisms are pre-positioned on the boom, and tool assemblies can be staged nearby for rapid attachment. This preliminary preparation minimizes the time required for tool changes during operations.
Solution Approach 2:
Manual mechanical tool changing is replaced with automated or semi-automated quick-connect mechanisms that use simplified coupling systems. These mechanisms may include hydraulic actuation, pneumatic assistance, or cam-based locking systems that reduce the time and effort required to swap tool assemblies compared to traditional manual bolting or mechanical coupling methods.
4Reliability
If cut debris is manually lowered with ropes, then worker safety is maintained by avoiding heavy lifting, but productivity deteriorates due to slow and cumbersome debris removal
Solution Approach 1:
The grapple assembly provides automated debris handling where the mechanical system performs the work of gripping, lifting, and lowering debris without requiring manual worker intervention. The grapple is actuated by hydraulic or pneumatic systems that automatically control the gripping and releasing actions, allowing debris to be handled by the machine itself rather than by workers using ropes.
Solution Approach 2:
The grapple mechanism is powered by hydraulic or pneumatic actuation systems that provide the force needed to grip and manipulate heavy debris. These fluid power systems enable automated control of the grapple's opening and closing actions, allowing rapid debris removal while workers remain safely positioned in the insulated bucket away from the heavy lifting operations.
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
The apparatus enables rapid and precise tree trimming and debris management, reducing worker risk and improving efficiency by allowing flexible tool configurations and increased reach, enabling safe disposal of cut limbs and precise chemical application.
Implementation Method 1
an axial rotator for turning the aerial tool configured boom assembly in a plane perpendicular to the boom axis
Implementation Method 2
one or more of the plurality of swivel ports providing hydraulic or pneumatic power to at least one aerial tool accessory attached via the one or more quick connect/disconnect sealable hose couplings
Implementation Method 3
one or more of the plurality of swivel ports providing hydraulic or pneumatic power to at least one aerial tool accessory
Implementation Method 4
one or more actuators configured to orient the attachable and detachable aerial tool configured boom assembly relative to the most distal portion of the aerial boom
Data Source
AI summary
A field-configurable apparatus for different aerial applications is provided. The field-configurable apparatus attaches to an aerial boom on a mobile carrier. The apparatus can perform rapid semi-precise cutting of vegetation. Additionally, the apparatus can perform more precise trimming of one or more areas (e.g., limbs) and optionally use a limb clamp to prevent cut limbs/vegetation from arbitrarily falling on objects below the cutting area. Still further, the apparatus can have a grapple or similar device attached to the end of the boom for use in relocating debris or for loading debris. Other industrial applications are also possible (e.g., commercial water blasting, deicing of planes, etc.). In each configuration, the apparatus comprises one or more rotatable or pivoting couplings to allow for rotation about one or more axis and therefore allow precise manipulation of an aerial tool assembly from an operator in the vehicle or on the ground.