Integrated Stabilizer Bar Rear Suspension for Industrial Vehicles
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Solution Overview
Problem
Current suspension systems for industrial vehicles face issues such as reduced maneuverability due to space constraints, increased production costs, and reduced reliability due to complex kinematic mechanisms and high torsional stress on the stabilizer bar, which affects the vehicle's stability and ramp angle.
Innovation Solution
A suspension system with a U-shaped stabilizer bar connected directly to the axle via shackle elements and the vehicle frame, eliminating the need for a hanger and simplifying the kinematic mechanism, allowing for direct connection to the wheel axis and reduced section sizes, thereby enhancing stiffness and maneuverability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the stabilizer bar is placed outside the suspension unit with a hanger mechanism, then the vehicle frame can be connected to the stabilizer bar, but the space in the rear part of the vehicle is reduced and maneuverability is limited
Solution Approach 1:
The stabilizer bar is integrated into the suspension unit by connecting it directly to the axle assembly, merging functions that were previously separated. This eliminates the need for a separate hanger mechanism and frees up space in the rear vehicle area, improving maneuverability while maintaining structural connectivity.
2Reliability
If the stabilizer bar is connected to the swinging arm via a hanger, then the vehicle frame connection is achieved, but the kinematic mechanism becomes complex and reliability is reduced
Solution Approach 1:
The hanger mechanism is extracted and removed from the system. The stabilizer bar is now connected directly to the axle through simplified linkages, eliminating the complex intermediate hanger mechanism and its associated kinematic chains, thereby reducing complexity and improving reliability.
Solution Approach 2:
Instead of connecting the stabilizer bar to the swinging arm through a hanger (indirect connection), the connection is inverted to be direct from the stabilizer bar to the axle assembly, simplifying the mechanical pathway and reducing the number of moving parts.
3Strength
If the stabilizer bar is connected through a hanger mechanism, then the vehicle frame connection is established, but high torsional stress is generated on the stabilizer bar
Solution Approach 1:
The axle assembly serves as an intermediary element between the stabilizer bar and the wheel assembly. This direct connection through the axle provides a more efficient load path that reduces torsional stress on the stabilizer bar compared to the indirect hanger connection, while still achieving the necessary structural strength.
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 design improves vehicle stability, reduces torsional stress, and decreases production costs by eliminating the need for high-strength materials, while maintaining ground clearance and optimizing the stabilizer bar's function, thus enhancing the vehicle's reliability and ramp angle capabilities.
Implementation Method 1
the different oscillation of the bridges 14 provides a torsional stress to the stabilizer bar 11
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
This invention relates to a rear suspension system, in particular for industrial vehicles intended to transport goods and/or passengers and equipped with rear pneumatic suspensions, including a stabilizer bar or anti-roll bar (21) integrated in the suspension unit. The integration of the torsion bar in the suspension unit reduces the problems of space in the rear part of the vehicle and this results in a better maneuverability of the vehicle itself and in a stiffening of the system that improves the performance of the vehicle.