Pre-assembled Bracket Assembly for Overhead Electrical Accessories
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Solution Overview
Problem
Existing bracket assemblies for overhead medium voltage electrical accessories require operators to handle loose components at heights, posing safety risks and increasing installation time due to the need for bucket trucks and protective gear, which complicates the mounting process.
Innovation Solution
A bracket assembly system that allows for pre-installation of electrical accessories on the ground, using an adjustable plate secured to the cross-arm with captive nuts and guide pins, eliminating the need for loose hardware and bucket trucks, and ensuring secure attachment without mishandling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If operators use protective gloves to handle loose bracket components at height, then safety is improved, but ease of operation deteriorates due to difficulty in handling components
Solution Approach 1:
The bracket components are pre-assembled into a complete bracket assembly on the ground before being lifted to the crossarm. This preliminary assembly action eliminates the need for operators to handle loose components at height, thereby maintaining safety while improving ease of operation.
2Reliability
If operators ascend to cross-arm to install loose components, then installation completeness is improved, but loss of time increases due to repeated descents for recovered components
Solution Approach 1:
All bracket components are pre-assembled into a complete unit on the ground before lifting. This ensures that when operators ascend to the crossarm, they only need to install the complete assembly in one action, eliminating repeated descents and time loss.
Solution Approach 2:
Multiple loose bracket components are merged into a single pre-assembled bracket assembly. This consolidation allows the entire bracket installation to be completed in one lifting and installation action, rather than requiring multiple separate operations.
3Quantity of substance
If bucket truck is used to bring up loose hardware and components, then availability of components at height is improved, but device complexity increases
Solution Approach 1:
Multiple separate component delivery trips using the bucket truck are merged into a single delivery of the pre-assembled bracket assembly. This reduces the complexity of equipment operations while ensuring all necessary components are available at the installation location.
4Adaptability or versatility
If loose components are handled at height, then installation flexibility is improved, but object-generated harmful factors increase due to dropped components
Solution Approach 1:
The bracket assembly is pre-assembled on the ground where operators can safely adjust and align components without risk of dropping them. This preliminary alignment action maintains installation flexibility while eliminating the harmful effects of handling loose components at height.
Data Source
AI summary
An apparatus and method of assembling a bracket assembly on a cross-arm is disclosed. The bracket assembly comprises a bracket, adjustable plate, first accessory frame, and second accessory frame. First accessory frame and second accessory bracket are coupled to the bracket with captive nuts. The bracket assembly is secured to a cross-arm by the adjustable plate, which is coupled to the bracket with at least one guide pin and an adjustable plate bolt.