Conveying Device for Mowed Straw with Adjustable Inflow

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Solution Overview

Problem

Conventional conveying devices for mowed crops struggle with uniform swath formation, particularly when handling small quantities of stalks, resulting in inhomogeneous deposition.

Innovation Solution

A conveying device with a drive-connected pin and a pick-up device featuring adjustable conveying tines and an inflow surface, allowing for variable angle adjustments and rotation relative to the travel direction, ensuring uniform swath formation by pivoting the receiving device and maintaining constant orientation of sliding means.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the inflow surface has a fixed incline for swath formation, then larger amounts of stalks can be transported, but swath formation becomes irregular with small amounts of stalks

Engineering Contradiction:
Improveamount of stalksVSAvoiduniformity of swath formation
Core Design Contradiction:
Quantity of substanceVSManufacturing precision

Solution Approach 1:

The patent applies the dynamics principle by making the inflow surface adjustable in angle relative to the receiving device. The incline angle can be dynamically changed depending on the amount of crop being transported. For large amounts of stalks, a steeper incline is used to facilitate transport, while for small amounts, a gentler incline ensures uniform deposition and regular swath formation. This dynamic adjustment resolves the contradiction between handling variable quantities and maintaining consistent swath quality.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If the conveying device is steerable to adapt to different working conditions, then versatility is improved, but the orientation of sliding means may change causing inconsistent performance

Engineering Contradiction:
Improvesteerability of conveying deviceVSAvoidconsistency of sliding means orientation
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies segmentation by separating the steering function from the sliding means orientation. The conveying device can be steered to adapt to different working conditions and positions, while the sliding means (inflow surface) maintains its orientation relative to the receiving device through the adjustable connection. This allows the overall device to be versatile while the critical sliding component maintains consistent functional orientation, resolving the contradiction between adaptability and reliability.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3381265B1Conveying device for mowed straw
Publication Date: 2021.03.24 RAHM ANDREAS
  • EP3381265B1 patent drawingFigure 1a
  • EP3381265B1 patent drawingFigure 1b~1c
  • EP3381265B1 patent drawingFigure 1d

AI summary

Conveying device (1) for mowed straw, wherein the conveying device (1) has a pin (10) which can be connected to a drive shaft of a steerable working machine, wherein the conveying device (1) has a receiving device (12) with conveying tines (16) arranged on a rotor (14) for receiving the straw from the ground surface, wherein a flow surface (20) is arranged downstream of the receiving device (12) with which the received straw can be gathered into a swath laterally of the conveying device (12), characterized in that an adjusting device (30) is provided with which the angle (α) between pin (10) and receiving device (12) can be changed.