Refuse Container Lifting Pin Manual Assembly

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing bulk refuse containers face issues with increased transport costs due to larger volumes caused by pre-assembled lifting pins and supports, and damage to the most expensive component when metal screws fail under mechanical stress, as well as inefficiencies in stress distribution and assembly requirements.

Innovation Solution

A bulk refuse container design featuring manually attachable lifting pins with reinforced side wall holes and backplates, allowing for tool-free assembly and stress distribution, using interlocking threads and serrated teeth for secure fastening, and a coaxial reinforcing element to manage mechanical thrusts, reducing the risk of damaging the container body.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If lifting pins are pre-assembled with supports using electric or pneumatic screwdrivers, then the lifting system is securely fastened, but the transport volume increases and assembly requires specialized tools

Engineering Contradiction:

Improvefastening securityVSAvoidtransport volume

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The lifting pin assembly is divided into separate components: the lifting pin itself, the backplate, and the support base. These segments can be transported separately and assembled manually at the destination, reducing transport volume while maintaining secure fastening through the threaded connection and reinforcement area

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The lifting pin assembly is designed for self-service manual assembly using simple hand tools. The threaded fastening mechanism allows operators to assemble the components without requiring electric or pneumatic screwdrivers, enabling assembly in locations without specialized tooling while still achieving reliable fastening

Inventive Principle:

Principle #25Self-service

2Reliability

If metal screws are used to fasten supports to the container body, then the assembly is secure, but the container body is damaged when screws fail under mechanical stress

Engineering Contradiction:

Improvefastening securityVSAvoidcontainer body damage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The backplate is designed as a disposable or replaceable component that absorbs the mechanical stress and potential failure. When the threaded fastening fails under stress, only the backplate needs to be replaced, not the expensive container body. This protects the permanent structure while maintaining secure fastening during normal operation

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The reinforcement area in the container body provides beforehand cushioning by distributing the mechanical stress from the threaded fastening. This prevents stress concentration that could lead to body damage, and the backplate serves as a sacrificial element that protects the body from damage in case of fastening failure

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Strength

If supports are made wide to distribute thrust, then stress distribution is improved, but the plan volume of each bin increases

Engineering Contradiction:

Improvestress distributionVSAvoidplan volume

Core Design Contradiction:

StrengthVSVolume of moving object

Solution Approach 1:

The reinforcement area provides localized stress distribution exactly where the lifting pin applies force. This concentrated local reinforcement is more efficient than wide supports, as it distributes stress only in the critical area needed, minimizing the plan volume while maintaining adequate stress distribution capability

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 design reduces transport costs by allowing disassembly for compact storage, minimizes damage to the container body by isolating stress to replaceable components, and promotes recyclability with reduced energy consumption and simpler assembly processes.

Implementation Method 1

The lifting pin can be fastened by using a backplate onto which said pin can be directly manually screwed

Methodology Applied

Scientific EffectThreaded fastening: Screw

Implementation Method 2

serrated teeth for secure fastening

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 3

respective reinforcement areas for distributing the mechanical stresses caused by lifting the bulk refuse container by means of the pins themselves

Methodology Applied

Scientific EffectStress distribution:

Data Source

PatentEP3351489B1Bulk refuse container with lifting pins which can be manually mounted

Publication Date: 2022.10.19 FORESTI ANTONIO LUIGI PIERO MARIA

Figure 1~2
Figure 3~4
Figure 5

AI summary

A bulk refuse container or bin (C) with lifting pins (PS) which can be fastened on the side of the body of said bulk refuse container (C) comprises, in combination: a bin or bulk refuse container (C), the body of which is provided with at least one seat (F) prepared at the position of each lifting pin (PS), in which seat (F) the respective pin (PS) can be fastened by means of a respective backplate (CP) on which said pin (PS) can be manually screwed; said pin (PS) and said respective backplate (CP) being made of plastic material as the bulk refuse container (C), or being made of any other suitable material.