Work Vehicle Support Bracket Joint Anchoring

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Solution Overview

Problem

Elastic deformation of a work vehicle's frame due to uneven road surfaces causes stress on support brackets, leading to instability and potential damage to attached components like hydraulic fluid tanks.

Innovation Solution

A support bracket configuration with joints that are less rigid than the bracket body, anchored at the vertical center of the vehicle frame's side plates, allowing for stable attachment and minimizing the impact of frame deformation on the bracket.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the support bracket is rigidly attached to the vehicle frame, then the attachment strength is improved, but the stability during elastic deformation deteriorates

Engineering Contradiction:
Improveattachment strengthVSAvoidstability during elastic deformation
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The joint rigidity parameter is changed by introducing a gap between the joint and the side plate, making the joint less rigid than the bracket body. This parameter change allows the joint to accommodate frame deformation while maintaining stable attachment.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The joint is designed with dynamic characteristics through the gap configuration, allowing it to adapt to elastic deformation of the vehicle frame while maintaining connection stability. The joint behaves differently under static and dynamic loading conditions.

Inventive Principle:
Principle #15Dynamics

2Reliability

If the joint is made less rigid to accommodate frame deformation, then the stability during elastic deformation is improved, but the attachment strength deteriorates

Engineering Contradiction:
Improvestability during elastic deformationVSAvoidattachment strength
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The attachment system is segmented into the bracket body and the joint, with the joint having different rigidity characteristics. This segmentation allows each component to perform its specific function optimally - the bracket body provides strength while the joint provides deformation accommodation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The rigidity parameter of the joint is specifically changed through the gap design, creating a deliberate parameter difference between the joint and bracket body. This parameter change enables the joint to be less rigid while maintaining sufficient attachment strength through the anchor and pillar configuration.

Inventive Principle:
Principle #35Parameter changes

3Strength

If the joint is anchored to the upper surface of the side plate, then the attachment strength is improved, but the stability during elastic deformation deteriorates

Engineering Contradiction:
Improveattachment strengthVSAvoidstability during elastic deformation
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The anchoring position is shifted from the upper surface (vertical dimension) to the side surface (horizontal dimension) of the side plate. This dimensional change allows the joint to be anchored in a location that is less susceptible to stress during wheel lift, improving stability while maintaining attachment strength.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The joint is anchored at a specific location (vertical center part) of the side plate where stress concentration is minimized. This local quality optimization ensures that the anchoring point experiences reduced stress during elastic deformation, improving both attachment strength and deformation stability.

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

The solution ensures stable attachment of the support bracket to the vehicle frame, even during elastic deformation, thereby preventing damage to the bracket and its supported components.

Implementation Method 1

Elastic deformation, such as twisting of the vehicle frame, occurs while the work vehicle is traveling or performing tasks

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS9476182B2Work vehicle
Publication Date: 2016.10.25 KOMATSU LTD
  • US9476182B2 patent drawing
  • US9476182B2 patent drawing
  • US9476182B2 patent drawing

AI summary

A work vehicle is provided with a vehicle frame, and a support bracket. The vehicle frame includes a first side plate, and a second side plate. The support bracket is arranged spanning the first side plate, and the second side plate. The first joint of the support bracket connects a first lower end of a support bracket body and the first side plate. The first joint extends upward from the side surface of the first side plate. The second joint of the support bracket connects a second lower end of a bracket body and the second side plate. The second joint extends upward from the side surface of the second side plate.