Front Axle Hose Routing Structure Under Engine Vibration

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing working vehicles face challenges in suitably routing linear members such as hoses for hydraulic systems due to the need for space-efficient and vibration-resistant configurations, particularly in the presence of a suspension device and drive transmission shafts.

Innovation Solution

The vehicle incorporates a support member below the engine with recesses and guide grooves to create routing spaces for hoses, along with a buffer device to absorb vibrations, allowing hoses to be routed efficiently and protected from the drive transmission shaft.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a suspension device is added to absorb vibration from the front axle case, then vibration absorption is improved, but the complexity of routing linear members worsens

Engineering Contradiction:
ImprovevibrationVSAvoidrouting complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The support member that holds the rocking shaft is merged with the function of defining routing spaces for linear members. This integration allows the suspension device to absorb vibration while the same support member simultaneously provides structured pathways for routing hoses, eliminating the need for separate routing structures and reducing overall complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The support member acts as an intermediary structure between the front axle case and the machine body frame. It not only supports the rocking shaft for vibration absorption but also creates intermediate routing spaces that guide linear members from the front axle case to the machine body frame, mediating both mechanical and fluid connections.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If routing spaces are defined by the support member and engine recess, then hose routing is improved, but assembly precision requirements worsen

Engineering Contradiction:
Improvehose routingVSAvoidassembly precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The routing space parameters are defined by the geometric relationship between the support member position and the engine recess shape. By carefully designing the support member's location and the recess's dimensions, the patent creates a routing pathway that is tolerant to normal assembly variations while still achieving proper hose routing.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The routing space is segmented into multiple regions: the engine recess provides one segment, the support member defines another segment, and together they create a multi-chamber pathway. This segmentation allows each component to be manufactured independently within standard tolerances while collectively providing the complete routing solution.

Inventive Principle:
Principle #1Segmentation

3Volume of moving object

If the drive transmission shaft is disposed below the support member, then space utilization is improved, but protection of linear members worsens

Engineering Contradiction:
Improvespace utilizationVSAvoidlinear member protection
Core Design Contradiction:
Volume of moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent arranges components in multiple vertical layers: the support member with routing spaces is positioned above, the drive transmission shaft is disposed below, and linear members are routed horizontally through the routing spaces. This three-dimensional arrangement allows the drive transmission shaft to occupy the lower space while linear members are protected in the upper routing spaces, eliminating interference between rotating and flexible components.

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

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

This configuration enables suitable routing of hoses while absorbing assembly errors and saving space, ensuring stable operation and protection from high-speed rotating components.

Implementation Method 1

a buffer device that absorbs vibration transmitted from the front axle case to the machine body frame

Methodology Applied
Scientific EffectVibration absorption: Damping

Data Source

PatentUS12617269B2Working vehicle
Publication Date: 2026.05.05 KUBOTA CORP
  • US12617269B2 patent drawing
  • US12617269B2 patent drawing
  • US12617269B2 patent drawing

AI summary

A working vehicle includes a machine body frame to which an engine is fixed, a front axle case that supports an axle of a front wheel and is rockable about a rocking shaft, a suspension device that absorbs vibration transmitted from the front axle case to the machine body frame, and a support member that is fixed to the machine body frame so as to be located below the engine, supports the rocking shaft, and defines a routing space in which a linear member (first hose, second hose extending in a front-rear direction can be routed between the support member and the engine.