Moving Headboard Cleanout for Reciprocating Conveyor

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Solution Overview

Problem

Existing cleanout systems for reciprocating floor slat conveyors in truck trailers often leave material behind, especially at the edges, leading to contamination between loads and stress on the tarp and return mechanism, due to inadequate cleaning and friction issues.

Innovation Solution

A moving headboard cleanout apparatus with flexible wings and a rear sweeper that adjusts to trailer dimensions, utilizing a flexible sheet and wing design to sweep the floor and sidewalls effectively, reducing friction and preventing material leakage, and featuring adjustable components for easy assembly and disassembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a flexible tarp system is used for cleanout, then the tarp can ride along the floor with the load and sweep the floor relatively clean, but the end of the tarp is sometimes buried in the pile of unloaded material which stresses the tarp material and/or the tarp return mechanism

Engineering Contradiction:
Improvecleanout functionVSAvoidtarp stress
Core Design Contradiction:
Ease of operationVSStrength

Solution Approach 1:

The headboard is designed to be movable rather than fixed, allowing it to dynamically adjust its position as material is discharged. The headboard can be pulled forward by the tarp during loading, then returns to its initial position during unloading, preventing it from being buried in discharged material and reducing stress on the tarp return mechanism.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The cleanout system is divided into separate functional components: the headboard for containment, the tarp for sweeping and pulling, and the return mechanism. This segmentation allows each component to perform its specific function optimally without the headboard being subjected to excessive stress from material burial.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If a floor tarp system is used for cleanout, then the tarp can pull a vertical barrier or headboard behind it, but a certain amount of material passes or leaks past the lateral edges during the unloading process

Engineering Contradiction:
Improvecleanout functionVSAvoidmaterial leakage
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The headboard is designed to move dynamically with the load during discharge, maintaining its position at the forward end of the trailer. This movement ensures the headboard continuously contains material against the lateral walls, preventing leakage past the edges while still allowing the tarp to effectively sweep the floor.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If the headboard is made movable and is free to shift forward during loading, then the headboard can be pulled forward by the tarp, but the headboard needs to be returned to its initial position at the forward end of the trailer

Engineering Contradiction:
Improveheadboard movementVSAvoidreturn mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The headboard return system utilizes the existing tarp winch mechanism to perform the return function. The same winch that reels in the tarp during loading can also pull the headboard back to its initial position, eliminating the need for a separate return mechanism and reducing overall system complexity.

Inventive Principle:
Principle #25Self-service

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 ensures thorough cleaning of the trailer floor and sidewalls, reduces material leakage, and simplifies the return process by minimizing tarp stress and length, maintaining trailer cleanliness and preventing contamination between loads.

Implementation Method 1

Because the dynamic frictional surface contact area between slat surfaces and load is less during slat return, the load is inched along by the conveyor apparatus as the slats move back and forth.

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

Some of the load's material rests directly on the tarp, thus increasing the frictional forces between the tarp and the reciprocating floor slats underneath, so that the tarp sweeps the floor relatively clean by pulling a vertical barrier or headboard behind it

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS9090193B2Moving cleanout for reciprocating conveyor system
Publication Date: 2015.07.28 KEITH MANUFACTURING CO
  • US9090193B2 patent drawing
  • US9090193B2 patent drawing
  • US9090193B2 patent drawing

AI summary

The invention disclosed here is a moving headboard for use in connection with a reciprocating floor slat system. It is particularly well-suited for use in connection with load-hauling trailers that have built-in reciprocating floor slat conveyors for unloading the trailer. Trailers of this kind are used in lieu of hydraulic lifts and involve inching the load off the trailer. The moving headboard sweeps the trailer floor clean during the unloading process.