Work Vehicle Cover Structure for Debris Blocking and Cooling Airflow

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Solution Overview

Problem

Existing work vehicles face challenges in preventing debris from entering critical components such as hydraulic cylinders and engine compartments while maintaining efficient airflow for cooling, especially during operations involving large debris like tree branches and sawdust.

Innovation Solution

The work vehicle incorporates a cover system comprising elastic covers that surround hydraulic cylinders and perforated side covers to prevent large debris ingress while allowing airflow for cooling, with detachable designs for normal operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a cover system is installed to prevent debris from entering critical components, then protection against debris is improved, but airflow for cooling may be blocked

Engineering Contradiction:
Improveprotection against debrisVSAvoidcooling efficiency
Core Design Contradiction:
ReliabilityVSTemperature

Solution Approach 1:

The side cover is designed with a perforated panel configuration, creating a porous structure that allows airflow through the cover while still providing debris protection. The perforations enable cooling air to pass through the side cover to reach the engine compartment without compromising the protective function against large debris particles

Inventive Principle:
Principle #31Porous materials

2Reliability

If a flexible boot covers the hydraulic cylinder, then debris prevention is improved, but access for maintenance becomes more difficult

Engineering Contradiction:
Improvedebris preventionVSAvoidaccess for maintenance
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The side cover is designed as a detachable component that can be removed from the vehicle body frame, allowing segmentation of the protective system. This enables easy access to the hydraulic cylinder for maintenance while maintaining debris protection during normal operation

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The side cover transitions from a fixed protective barrier to a removable component, dynamically changing its state based on operational needs. During normal operation, it provides debris protection; during maintenance, it can be detached to allow access to internal components

Inventive Principle:
Principle #15Dynamics

3Temperature

If openings are provided in the vehicle body frame for airflow, then cooling efficiency is improved, but debris entry risk increases

Engineering Contradiction:
Improvecooling efficiencyVSAvoiddebris entry risk
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The side cover with perforated panel configuration acts as a porous filter, allowing beneficial airflow for cooling while blocking harmful large debris particles. The perforations serve as controlled openings that selectively permit air passage while preventing debris entry into the engine compartment

Inventive Principle:
Principle #31Porous materials

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 effectively prevents debris from entering critical components while ensuring efficient cooling, enhancing operational reliability and maintaining performance during different work conditions.

Implementation Method 1

The first cover is made of an elastic material and configured to surround an outer periphery of the first arm hydraulic cylinder

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

The first side cover is made of a perforated panel and is detachably attached to the first outer frame to cover the second opening

Methodology Applied
Scientific EffectPermeation: Permeation

Data Source

PatentUS12509845B2Work vehicle
Publication Date: 2025.12.30 KUBOTA CORP
  • US12509845B2 patent drawing
  • US12509845B2 patent drawing
  • US12509845B2 patent drawing

AI summary

A work vehicle includes a vehicle body frame including a first inner frame including a first connection and a first inner projection projecting above the first connection in a height direction, a first outer frame including a second connection and a first outer projection projecting above the second connection in the height direction, and a first connection frame having a first opening and connected to the first connection and the second connection between the first inner frame and the first outer frame. A first arm hydraulic cylinder is provided to pass through the first opening. The first cover is configured to surround an outer periphery of the first arm hydraulic cylinder to cover the first opening and provided on the first connection frame to be slidably guided by the first connection frame, the first inner projection, and the first outer projection.