Drive Unit Mounting for Lateral Vibration Control
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Solution Overview
Problem
Existing configurations for supporting drive units in working vehicles, particularly those with short lateral distances between underframes, struggle to effectively inhibit lateral vibration of the upper portion of the drive unit, leading to instability and increased vibration.
Innovation Solution
A configuration where the lower portion of the drive unit is supported on an underframe with short lateral width by lower anti-vibration mounts, and the upper portion is supported on a middle portion of a lateral frame that bridges the left and right upper frames, using an upper anti-vibration mount to inhibit lateral vibration, while also incorporating suspension arms for improved riding comfort and force absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the upper portion of the drive unit is supported on one of the pair of left and right upper pipes, then the drive unit can be supported in an anti-vibration manner, but the side of the drive unit corresponding to the other upper pipe is allowed to be displaced, causing instability
Solution Approach 1:
The support structure is segmented into three distinct mounting points: two lower mounts on the underframe and one upper mount on the lateral frame. This segmentation distributes the support function across multiple locations, preventing displacement on any single side while maintaining overall stability.
Solution Approach 2:
The invention transitions from supporting the drive unit only on the underframe (one dimension/level) to a three-point support system that includes both the underframe and the lateral frame connecting the upper pipes. This adds a lateral dimension to the support structure, creating a stable triangular configuration that prevents displacement.
2Device complexity
If the distance between left and right underframes is short, then the vehicle body frame structure is compact, but it is difficult to inhibit vibration of the upper portion of the drive unit in the lateral direction
Solution Approach 1:
The invention addresses the limited lateral distance between underframes by introducing a vertical dimension through the lateral frame that connects the upper pipes. This creates a three-dimensional support structure where the upper mount on the lateral frame provides lateral stabilization without requiring increased distance between the underframes.
Solution Approach 2:
The lateral frame acts as an intermediary structure that connects the upper pipes and provides a mounting point for the upper anti-vibration mount. This intermediary element enables lateral vibration inhibition without modifying the underframe spacing or increasing overall structural complexity.
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 effectively inhibits lateral vibration of the upper drive unit portion, enhances stability, and allows for better absorption of impacts, providing superior anti-vibration capabilities and improved riding comfort without increasing the overall strength of the vehicle body frame.
Implementation Method 1
two left and right sides of a lower portion of the drive unit are supported on the underframe by lower anti-vibration mounts, and in addition, an upper portion of the drive unit is supported on a middle portion of a lateral frame by an upper anti-vibration mount
Implementation Method 2
lower anti-vibration mounts, and in addition, an upper portion of the drive unit is supported
Data Source
AI summary
An engine and a transmission case are connected to configure a drive unit. Left and right lower portions of the engine and left and right lower portions of the transmission case are supported on an underframe by lower anti-vibration mounts. A lateral frame is provided in a form bridging left and right upper frames. An upper portion of the transmission case is supported by an upper anti-vibration mount on a middle portion of the lateral frame.