Pivoting Cabin Mounting for Tractor Vibration Isolation

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Solution Overview

Problem

Existing cabin mountings for agricultural machines do not adequately compensate for vibrations during operation, leading to reduced driving comfort and increased wear, while being complex and requiring high assembly effort.

Innovation Solution

A cabin mounting system with damping modules at front and rear points, featuring cross-connecting elements and coupling pins to pivotally connect the driver's cab to the machine frame, minimizing vibration transmission and allowing for easy assembly and maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional cabin mountings are used, then the structure is stable, but vibration compensation is inadequate and driving comfort is reduced

Engineering Contradiction:
Improvevibration compensationVSAvoiddriving comfort
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The cabin mounting system is divided into multiple independent mounting points (front left, front right, rear left, rear right), each equipped with its own damping module. This segmentation allows each mounting point to independently compensate for vibrations, improving overall vibration compensation effectiveness while maintaining structural stability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The mounting system incorporates damping modules with pivotally connected connecting elements that can dynamically adapt to vibration movements. The cross-connecting elements with coupling pins enable controlled pivoting motion, allowing the system to dynamically respond to and compensate for vibrations rather than rigidly resisting them.

Inventive Principle:
Principle #15Dynamics

2Reliability

If complex damping systems are implemented, then vibration compensation improves, but device complexity and assembly effort increase

Engineering Contradiction:
Improvevibration compensationVSAvoidmounting structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The damping modules serve multiple functions simultaneously: they provide vibration damping, enable pivotal movement for dynamic adaptation, and structurally connect the cabin to the machine frame. The cross-connecting elements with coupling pins also serve both as structural connectors and as pivoting joints for vibration compensation, reducing the need for separate components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention merges the damping function with the structural connection function into integrated mounting points. The cross-connecting elements combine the role of structural bracing with the role of vibration-compensating pivoting joints, thereby reducing the number of separate components and simplifying the overall structure.

Inventive Principle:
Principle #5Merging (Combining)

3Stability of the object's composition

If rigid connections are used, then structural stability is maintained, but vibration transmission to the cabin increases

Engineering Contradiction:
Improvestructural stabilityVSAvoidvibration transmission
Core Design Contradiction:
Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The damping modules act as intermediary elements between the rigid machine frame and the cabin. These intermediaries absorb and dampen vibrations through their damping elements while still providing stable structural support, thereby preventing direct transmission of vibrations from the frame to the cabin while maintaining structural integrity.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The connecting elements are designed with pivotal connections that allow controlled movement and rotation. This dynamic capability enables the structure to adapt to vibration-induced movements rather than rigidly resisting them, reducing vibration transmission while maintaining overall structural stability through the damping action.

Inventive Principle:
Principle #15Dynamics

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 system effectively dampens vertical movements, enhances stability, reduces noise, and increases operator comfort by minimizing gravitational force transmission, thereby extending the service life of the cab and reducing material fatigue.

Implementation Method 1

each including a damping module (6) for damping vertical movements

Methodology Applied
Scientific EffectDamping: Damping

Data Source

PatentEP4686644A1Cabin bearing for a cabin of an agricultural machine, cabin for an agricultural machine and agricultural machine
Publication Date: 2026.02.04 CLAAS TRACTOR
  • EP4686644A1 patent drawingFigure 1
  • EP4686644A1 patent drawingFigure 2
  • EP4686644A1 patent drawingFigure 3

AI summary

The present application relates to a cabin mounting (1) for a driver's cabin (2) of an agricultural machine (3), in particular a tractor, comprising two front mounting points (4) and two rear mounting points (5), wherein the mounting points (4, 5) each comprise a damping module (6) for damping vertical movements, via which the driver's cabin (2) can be movably mounted on a machine frame (7) of the agricultural machine (3), wherein the mounting points (4, 5) each have a lower connecting element (8) for connection with the machine frame (7) of the agricultural machine (3), wherein the mounting points (4, 5) each have an upper connecting element (9) for connection with a frame section (10) of a cabin frame (11) of the driver's cabin (2).In order to provide a cabin mounting that more reliably compensates for vibrations of the driver's cabin occurring during the operation of the work machine and is characterized at the same time by lower complexity and reduced assembly effort, it is proposed according to the invention that the front bearing points (4) each comprise a transverse connecting element (12), wherein the respective transverse connecting element (12) is pivotably connected to both the respective damper module (6) and the lower connecting element (8) of the associated bearing point (4), wherein the respective transverse connecting element (12) comprises a coupling pin (13) extending at least substantially in a vertical direction, wherein the transverse connecting element (12) is coupled to the upper connecting element (9) by means of the coupling pin (13) with an intermediate damping element (14).