Pick-Up Stripper Hybrid Connection for Vibration Resistance

Solution Overview

Problem

Conventional pick-ups require significant effort and expense for mounting and securing strippers, and existing solutions are prone to separation due to vibrations or shocks during operation.

Innovation Solution

The pick-up features strippers with a first form-fitting connection that fixes the stripper to the frame in both directions transverse to its longitudinal axis and a second detachable connection that allows movement and removal, combined with a force-fitting screw connection at the second end for stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If screw connections are used to secure strippers to the frame, then the strippers are firmly fixed, but the manufacturing cost and time increase significantly

Engineering Contradiction:

Improvestripper fixation reliabilityVSAvoidmanufacturing cost and time

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The connection system is divided into two distinct types: form-fitting connections for quick attachment and force-fitting connections for secure fixation. This segmentation allows each connection type to perform its specific function optimally without requiring expensive screw connections at both ends.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different connection qualities are applied at different locations: form-fitting connections (requiring precise geometry) at the first end for easy assembly, and force-fitting connections (requiring high strength) at the second end for vibration resistance. This local differentiation optimizes both manufacturing ease and reliability.

Inventive Principle:

Principle #3Local quality

2Ease of operation

If detachable connections are used to simplify stripper removal, then assembly becomes easier, but the strippers may separate due to vibrations or shocks

Engineering Contradiction:

Improvestripper removal easeVSAvoidstripper connection stability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The connection system is divided into two distinct types: form-fitting connections for quick attachment and force-fitting connections for secure fixation. This segmentation allows each connection type to perform its specific function optimally without requiring expensive screw connections at both ends.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention merges two different connection principles (form-fitting and force-fitting) into a single hybrid system. This combination leverages the advantages of both approaches: the ease of detachment from form-fitting connections and the vibration resistance of force-fitting connections.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If accurate slot and tongue dimensions are used to prevent vibration, then connection stability improves, but manufacturing precision requirements and cost increase

Engineering Contradiction:

Improveconnection stabilityVSAvoidslot and tongue dimensional accuracy

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

Different connection qualities are applied at different locations: form-fitting connections (requiring precise geometry) at the first end for easy assembly, and force-fitting connections (requiring high strength) at the second end for vibration resistance. This local differentiation optimizes both manufacturing ease and reliability.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS8893463B2Pick-up

Publication Date: 2014.11.25 DEERE & CO

AI summary

The invention pertains to a pick-up (10) with a frame (12), with at least one tine carrier (26) that can be moved relative to the frame (12), with tines (14) that are fastened on the tine carrier (26) and with strippers (30) that are arranged adjacent to one another transverse to the forward direction (V) and between which are formed intermediate spaces (28) through which the tines (14) extend outward and along which the tines (14) can be moved, wherein the strippers (30) feature a first end that is detachably fastened on the frame (12) and a second end that is detachably fastened on the frame (12), and wherein the strippers (30) are connected to the frame (12) at the first end by means of two form-fitting connections (56, 62, 38, 58).It is proposed that the strippers (30) be inherently rigid and respectively connected to the frame (12) at their second end by means of a force-fitting connection.