Driver Cab Mounting with Adjustable Damping
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Solution Overview
Problem
Existing driver's cab mounting systems for commercial vehicles are cumbersome, requiring significant installation space and weight due to the use of multiple components for vibration decoupling and stabilization, which compromises driving comfort and safety.
Innovation Solution
A driver's cab mounting system utilizing semi-active or active dampers with adjustable damping force, eliminating the need for a mechanical stabilizer and optimizing damping in both tensile and compressive loads through a four-point mounting arrangement with dual dampers per device, allowing for precise control of damping forces to counteract movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple passive components (stabilizer, spring struts, wishbone) are used for driver's cab suspension, then vibration decoupling and stabilization are achieved, but installation space and weight increase significantly
Solution Approach 1:
The patent replaces the mechanical stabilizer and passive suspension components with an active control system using four damping devices equipped with sensors and actuators. The control unit processes sensor signals and actively adjusts damping forces to achieve stabilization, substituting mechanical stabilization with an active electromechanical system that reduces overall component weight while maintaining reliability
Solution Approach 2:
The four damping devices serve multiple functions simultaneously: they provide vibration decoupling, active stabilization, and load damping. Each damping device is controlled to respond to both vertical and lateral movements, eliminating the need for separate stabilizer and spring strut components, thereby reducing installation space and weight
2Reliability
If multiple passive components (stabilizer, spring struts, wishbone) are used for driver's cab suspension, then vibration decoupling and stabilization are achieved, but installation space requirements increase
Solution Approach 1:
The patent merges the functions of the stabilizer, spring struts, and wishbone into a single integrated mounting system with four damping devices. Each damping device combines vibration isolation and stabilization functions, eliminating the need for separate mechanical components and reducing the overall installation space required for the driver's cab suspension
3Reliability
If damping force is increased to quickly suppress unwanted movements, then driving comfort improves, but energy consumption increases
Solution Approach 1:
The patent employs semi-active or active damping devices with adjustable damping forces that are dynamically controlled based on real-time sensor feedback. The control unit modulates damping forces to provide high damping only when needed for suppressing unwanted movements, rather than maintaining constant high damping, thereby reducing overall energy consumption while maintaining driving comfort
Solution Approach 2:
The system uses sensors to detect cab movements and provides feedback to the control unit, which adjusts damping forces in real-time. This closed-loop control ensures that high damping forces are applied only when and where needed to suppress unwanted movements, optimizing the balance between driving comfort and energy consumption
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 solution reduces the weight and space requirements of the mounting system while providing effective damping of all load states, enhancing driving comfort and safety by quickly suppressing unwanted movements without the need for a stabilizer.
Implementation Method 1
at least four damping devices arranged between a driver's cab (1) and a frame (2) of the commercial vehicle (20), each having a separate adjustable damping force
Data Source
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AI summary
The invention relates to a driver's cab mounting (10) for a commercial vehicle (20), comprising at least four damper devices (3a, 3b, 3c, 3d) which are arranged between the driver's cab (1) and a frame (2) of the commercial vehicle (20), preferably in the form of a four-point mounting, and which can each be separately adjusted in their damping force. According to the invention, there is provision here that each of the damper devices (3a, 3b, 3c, 3d) is designed to damp both tensile and compressive loads from the driver's cab (1) to the frame (2). The invention further relates to a commercial vehicle (20) having a corresponding driver's cab mounting (10) and to a method for adjusting the damping of a driver's cab mounting (10). The method here comprises the following steps: determining which of the damper devices (3a, 3b, 3c, 3d) are exposed to a tensile load from the driver's cab (1) to the frame (2) and which are exposed to a compressive load from the driver's cab (1) to the frame (2), adapting the damper force of the damper devices (3a, 3b, 3c, 3d) which are exposed to a tensile load from the driver's cab (1) to the frame (2) for the purpose of damping a tensile load from the driver's cab (1) to the frame (2) and/or adapting the damper force of the damper devices (3a, 3b, 3c, 3d) which are exposed to a compressive load from the driver's cab (1) to the frame (2) for the purpose of damping a compressive load from the driver's cab (1) to the frame (2).