Electrical Cabinet Hoist Bar for Modular Bus Assembly Installation

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Solution Overview

Problem

Conventional factory-assembled electrical equipment for power distribution systems is limited in configuration, expensive due to the use of copper busbars, and poses challenges in shipping and installation due to size and weight, as well as restricted access for wiring.

Innovation Solution

The system includes an electrical cabinet with a cabinet frame, hoist brackets, a hoist bar, and a hoist mechanism, allowing for the lifting and positioning of electrical components within the cabinet without the need for fasteners, facilitating easier assembly and installation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If factory-assembled electrical equipment is used, then configuration options are limited, but manufacturing precision and reliability are improved

Engineering Contradiction:
Improveconfiguration optionsVSAvoidmanufacturing flexibility
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The electrical equipment is divided into modular components (circuit breakers, bus assemblies, enclosures) that can be independently manufactured and then assembled in various configurations at the jobsite, enabling both standardization and adaptability

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system allows dynamic reconfiguration of electrical components after assembly, enabling the equipment to adapt to different operational requirements through repositioning and reconnection of modular elements

Inventive Principle:
Principle #15Dynamics

2Reliability

If copper busbars are used in factory-assembled equipment, then electrical conductivity is improved, but cost increases

Engineering Contradiction:
Improveelectrical conductivityVSAvoidcost
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent substitutes copper busbars with aluminum bus assemblies, changing the material parameter to achieve comparable electrical conductivity at lower cost, while maintaining reliability through proper design and connections

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If fully assembled electrical equipment is shipped to jobsite, then manufacturing precision is maintained, but shipping cost and maneuverability worsen

Engineering Contradiction:
Improveassembly precisionVSAvoidshipping weight
Core Design Contradiction:
Manufacturing precisionVSWeight of moving object

Solution Approach 1:

The equipment is segmented into smaller modular components that can be shipped separately and assembled at the jobsite, reducing individual shipment weights and improving maneuverability while maintaining overall assembly precision

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Modular components are designed to nest within each other or compact packaging during shipping, optimizing space utilization and reducing the overall footprint and weight of transported materials

Inventive Principle:
Principle #7Nested doll (Nesting)

4Strength

If components are blocked in fully assembled equipment, then structural integrity is improved, but ease of operation for wiring worsens

Engineering Contradiction:
Improvestructural integrityVSAvoidaccess for wiring
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The equipment is assembled in modular sections that can be opened or removed to provide access for wiring operations, maintaining structural integrity through proper connection points while improving ease of operation during installation

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12348022B2Bus stack hoist and attachment features
Publication Date: 2025.07.01 SCHNEIDER ELECTRIC USA INC
  • US12348022B2 patent drawing
  • US12348022B2 patent drawing
  • US12348022B2 patent drawing

AI summary

An electrical cabinet includes a cabinet frame, two or more hoist brackets, a hoist bar, and a hoist mechanism. The cabinet frame has a top section and a bottom section. The bottom section rests on an underlying supporting surface, and the top section is positioned at an opposing side of the cabinet frame from the bottom section. The hoist brackets are coupled to the top section of the cabinet frame. Each of the hoist brackets has a respective indentation. The hoist bar rests in the indentations of the two or more hoist brackets, and includes a first groove. The hoist mechanism rests in the first groove of the hoist bar. The hoist mechanism is configured to facilitate lifting and positioning of an electrical component of a power distribution system within the electrical cabinet. The electrical component can be a bus assembly for a switchboard.