Vehicle Hoist Control System for Chassis Impact Prevention
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Solution Overview
Problem
Load carrying vehicles face the issue of the body 'slamming' down onto the chassis when using only the lower function, which can adversely load the chassis, requiring manual engagement of the float function to prevent damage during transport.
Innovation Solution
A control system that includes an inertia measurement unit as an inclination sensor to automatically engage the float mode when the body reaches a predetermined position, allowing the body to move under its own weight, thereby preventing sudden impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the lower function is used to move the body downward, then the body can be lowered efficiently, but the body may slam down onto the chassis causing adverse loading
Solution Approach 1:
The control system automatically engages the float mode before the body reaches the chassis by detecting when the body is at a predetermined position using the inclination sensor. This preliminary action allows the body to transition from powered lowering to unpowered lowering under its own weight, preventing the harmful impact before it occurs.
Solution Approach 2:
The system uses an inclination sensor to continuously monitor the body position and provides feedback to the control system. When the body reaches a predetermined position, the control system automatically switches from lower mode to float mode, creating a closed-loop control that prevents chassis impact without requiring manual operator intervention.
2Object-affected harmful factors
If the float function is used manually to prevent slamming, then chassis damage is prevented, but operator intervention is required during transport
Solution Approach 1:
The control system performs the function of monitoring body position and automatically switching between lower and float modes without requiring manual operator intervention. The system serves itself by using the inclination sensor to detect body position and autonomously engaging the appropriate mode, eliminating the need for the operator to manually select float mode during transport.
Solution Approach 2:
The inclination sensor provides continuous feedback on body position to the control system, which automatically adjusts the hoist system mode accordingly. This automated feedback loop replaces manual operator judgment and action, making the system easier to operate while maintaining protection against chassis damage.
3Ease of operation
If automated control is implemented using inclination sensor, then operator intervention is reduced, but device complexity increases
Solution Approach 1:
The system employs an inclination sensor to provide feedback on body position to the control system, which automatically switches between lower and float modes. This feedback mechanism enables automated control with relatively simple additional components, achieving reduced operator intervention while maintaining acceptable device 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
Automatically engaging the float function prevents chassis damage by allowing the body to lower gently under its own weight, enhancing safety and reducing operator intervention during transport.
Implementation Method 1
at least one inertia measurement unit configured as an inclination sensor to provide at least one position signal to the control system relating to a body position of the body
Implementation Method 2
a second mode in which the body moves under its own weight
Data Source
Figure 1
Figure 2
AI summary
The present disclosure relates generally to a vehicle having a body (17) which can be moved relative to another vehicle member and a control system for automatically selecting an operational mode of the body. The body (17) may be moved by a hoist system (15) which may have a plurality of operational modes including a first mode in which the body is moved under power; and a second mode in which the body moves under its own weight. An inertia measurement unit may be used to determine the position of the body (17) and a control system may automatically engage the second mode that the body position is at a first predetermined body position (19) and the first mode is already engaged.