Trailer Chassis Leveling by Wheel Lifting and Chassis Supports
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Solution Overview
Problem
Existing leveling technologies for road vehicles, especially trailers, face challenges in achieving a deep and ergonomic leveling position while avoiding contact issues with the ground, particularly due to the limitations of conventional hydraulic lifting systems.
Innovation Solution
The proposed leveling technology employs individually controllable wheel lifting agents and lockable chassis supports to lower the chassis during the leveling process, allowing for a deeper and more stable leveling position. This system ensures safe support at all points and avoids ground contact issues by allowing the chassis to be lowered below its initial position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the chassis is raised during leveling using conventional hydraulic jacks, then the leveling position is achieved, but the entry area becomes difficult to access and ground contact problems occur
Solution Approach 1:
The patent inverts the conventional leveling approach by lowering the chassis instead of raising it. The lifting device is controlled to lower the chassis during leveling, achieving the desired horizontal alignment at a lower position that improves entry area accessibility while maintaining leveling stability through the support of wheel lifting means and chassis supports on the ground.
2Ease of operation
If the chassis is lowered to improve entry area access, then ergonomics improve, but ground contact problems increase with conventional systems
Solution Approach 1:
The patent segments the support function into two independent systems: wheel lifting means for vertical adjustment and chassis supports for ground stabilization. This segmentation allows the chassis to be lowered for ergonomic access while the chassis supports maintain reliable ground contact and support, preventing the ground contact problems that would occur with a single unified system.
3Device complexity
If conventional hydraulic jacks are used for leveling, then the system is simple, but contact problems with the ground occur at maximum extension
Solution Approach 1:
The patent introduces chassis supports as intermediary elements between the chassis and the ground. These chassis supports act as mediators that provide additional ground contact points and distribute the support load, preventing the jack ground contact reliability problems that occur when conventional hydraulic jacks operate at maximum extension.
4Manufacturing precision
If the chassis is raised high during leveling, then leveling position is achieved, but the entry area becomes ergonomically unfavorable
Solution Approach 1:
The patent inverts the conventional approach by achieving precise leveling position accuracy through chassis lowering rather than raising. The wheel lifting means and chassis supports work together to maintain horizontal alignment at a lower chassis position, simultaneously achieving both leveling precision and ergonomic entry area accessibility.
Data Source
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AI summary
The invention relates to a leveling device and a leveling method for road vehicles (1), in particular trailers, with a chassis (3) and a sprung axle assembly (4) with vehicle wheels (6, 7) on both sides and a longitudinal axis (40). The leveling device (2) is designed and configured for aligning the chassis (3) in a desired angular position in space and comprises a leveling control (8), a leveling sensor (9) for detecting the angular position of the chassis (3), and a driven lifting device (10) controllable by the leveling control (8) for moving the chassis (3) vertically during leveling. The lifting device (10) comprises several wheel lifting means (11), each configured to raise and lower a vehicle wheel (6, 7) individually relative to the chassis (3), wherein the leveling device (2) has several chassis supports (12) that are controllable, lockable, and raising and lowering by the leveling control (8).