Cable-Operated Cab Tilting Mechanism for Truck Collision Safety
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Solution Overview
Problem
Existing truck designs with hydraulic tilting systems for the driver's cab are complex, space-intensive, and prone to damage and leakage in frontal collisions, leading to costly repairs and potential driver injury due to inadequate energy absorption and protection.
Innovation Solution
A truck with a cable-operated tilting device that uses a mechanical pulling element, such as a chain, rope, or belt, mounted between the cab and chassis, which can be actuated to tilt the cab and function as a safety device by dissipating kinetic energy during collisions, reducing damage and providing secure anchorage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydraulic tilting systems are used for the driver's cab, then the tilting function is achieved, but the construction becomes complex and requires large space
Solution Approach 1:
The patent extracts the hydraulic system from the tilting mechanism and replaces it with a mechanical cable-driven system. The hydraulic pump, lines, and cylinders are removed, leaving only essential mechanical components (cables, drums, bearings) that achieve the same tilting function with simpler construction and reduced space requirements.
Solution Approach 2:
The patent replaces the hydraulic system with a purely mechanical cable-driven system. Instead of using hydraulic fluid pressure to move the cab, the invention uses cables wrapped around drums that are rotated by motors, converting electrical energy to mechanical motion through purely mechanical means, thereby eliminating hydraulic complexity.
2Reliability
If hydraulic tilting systems are used for the driver's cab, then the tilting function is achieved, but the system is vulnerable to damage and leakage in frontal collisions
Solution Approach 1:
The patent employs cables that can be easily replaced if damaged in a collision. Rather than using expensive hydraulic components that require complex repair, the mechanical cable system uses simple, inexpensive elements that can be quickly swapped out, minimizing repair time and cost after accidental damage.
Solution Approach 2:
The cable system provides inherent flexibility that allows the tilting mechanism to accommodate collision forces without rigid failure. The cables can stretch and deform under impact loads, absorbing energy and preventing the catastrophic failure that would occur with rigid hydraulic components during frontal collisions.
3Strength
If connection points of the driver's cab are designed to be strong, then the cab can withstand collision forces, but the kinetic energy cannot be dissipated into the chassis
Solution Approach 1:
The patent incorporates energy-absorbing elements in the form of cables that are pre-designed to deform and stretch under collision loads. These cables act as cushioning elements that activate before the main structural connections fail, absorbing kinetic energy through controlled deformation and preventing the cab from being violently ejected during frontal impacts.
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 cable-operated tilting device simplifies design, reduces space requirements, and effectively absorbs collision energy, minimizing cab damage and ensuring driver safety by securely fixing the cab to the chassis, while eliminating the need for hydraulic fluid and components.
Implementation Method 1
The tension element is mounted between the driver's cab and the chassis in such a way that the latter is nevertheless securely fixed when the bearing is torn off. The tension element holds the cab on the chassis and at least partially converts the kinetic energy of the impact through a certain lengthening.
Data Source
AI summary
Disclosed is a truck (10) comprising a cab (1) that is hinged to a chassis via a bearing (2) so as to be pivotable about a rotational shaft (6), a tilting device (4) for raising the cab (1) into a forward-tilting open position in order to access the subjacent engine compartment, the cab (1) being fixed to the chassis (3) in the closed position. The tilting device (4) is provided with at least one tractive element (5, 5') that can be actuated via a drive (7, 7') and is used for raising and closing the cab (1). Said tractive element (5, 5') is mounted between the cab (1) and the chassis (3) so as to form a catching mechanism for the cab (1) in case of a head-on collision with an obstacle at the level of the cab (1).