Debris Carts with Arcuate Lifting Apparatus for Direct Conveyor Loading

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Solution Overview

Problem

Conventional debris processing at jobsites requires multiple handling operations, inefficient use of space, and difficulty in separating recyclables due to the fixed location and accessibility of dumpsters, leading to inefficiencies and security issues.

Innovation Solution

A system comprising carts with wheels and a lifting apparatus that allows for rotational movement along an arcuate path, enabling efficient transport and unloading of debris directly into a conveyor system, reducing handling steps and improving separation capabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If a large dumpster is delivered to a jobsite using a roll-off truck, then the dumpster can receive all types of debris from the jobsite, but a large designated area is required for placement, loading, and unloading, and the dumpster remains in a fixed location inconveniently located a long distance from where debris is generated

Engineering Contradiction:
Improvedebris capacityVSAvoiddebris handling convenience
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The system divides the large dumpster into multiple smaller carts that can be distributed throughout the jobsite. Each cart is equipped with wheels and can be independently positioned near debris generation points, eliminating the need for a single large fixed dumpster while maintaining total debris capacity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The carts are designed with wheels and can be dynamically repositioned throughout the jobsite as needed. The lifting apparatus enables easy movement of carts between storage areas, loading zones, and debris generation points, transforming the static dumpster system into a dynamic, flexible debris collection network.

Inventive Principle:
Principle #15Dynamics

2Area of stationary object

If debris is piled up on ground or floor surfaces to be transported to the dumpster at a later time, then space can be utilized, but at least two separate handling operations (piling of debris, transport of debris) are required to position the debris in the dumpster

Engineering Contradiction:
Improvejobsite space utilizationVSAvoiddebris processing efficiency
Core Design Contradiction:
Area of stationary objectVSProductivity

Solution Approach 1:

The carts are designed to be self-contained with debris-receiving spaces that can be directly positioned at debris generation points. Workers can deposit debris directly into the carts as they move through the jobsite, eliminating the separate piling and transport operations required by traditional dumpster systems.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The carts serve as intermediaries between debris generation points and the final disposal location. Instead of debris needing to be piled and then transported to a distant dumpster, the carts act as mobile collection points that bridge the gap between where debris is created and where it needs to go.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If the dumpster remains open to permit positioning of material within the dumpster at any time, then accessibility is improved, but the dumpsters are often filled with non-jobsite waste and it is difficult to separate recyclable materials from other materials

Engineering Contradiction:
Improvematerial loading accessibilityVSAvoiddebris sorting accuracy
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

Different carts can be designated for specific types of debris or recycling categories. Each cart maintains open accessibility for easy loading, but the localized designation of cart purposes enables systematic separation of recyclable materials from other waste, solving both the accessibility and sorting problems.

Inventive Principle:
Principle #3Local quality

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

This solution minimizes handling operations, enhances processing efficiency, and improves the separation and security of debris by allowing flexible cart placement and direct loading of materials into a conveyor system, reducing the need for large designated areas and preventing non-jobsite waste.

Implementation Method 1

The cart can reach the unloading position following rotational movement of the at least one arm assembly of the lifting apparatus along an arcuate path having an arc length ranging from about 130 degrees to about 170 degrees

Methodology Applied
Scientific EffectGravitation: Gravitation

Data Source

PatentUS11254524B2Debris carts and systems and methods of using same
Publication Date: 2022.02.22 RICHARD S BURNS & CO INC
  • US11254524B2 patent drawing
  • US11254524B2 patent drawing
  • US11254524B2 patent drawing

AI summary

Systems and methods for processing debris from job sites are disclosed. Carts for receiving the debris are also disclosed. Each cart has a base, a plurality of wheels extending downwardly from the base relative to a vertical axis, and a plurality of walls extending upwardly from the base. The walls and the base of each cart cooperate to define a debris-receiving space. The carts can be engaged by a lifting apparatus that rotates along an arcuate path to position the carts in an unloading position.