Dump Truck Body Hoisting Display Device
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Solution Overview
Problem
Operators of dump trucks face difficulty in recognizing the actual inclination angle of the body, making it challenging to control the hoist cylinder's operation speed effectively during body hoisting, as motion pictures do not clearly convey the hoisting state.
Innovation Solution
A body hoisting state display device is mounted on the dump truck, featuring a hydraulic cylinder, an operating member, a hydraulic control unit, a stop control unit, an angle detection unit, a seating detection unit, a calculation unit, and a display control unit that calculates and displays the inclination angle of the body relative to the frame, providing visual feedback on a display screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a motion picture display is used to show body hoisting state, then the display provides visual information about body movement, but the operator cannot accurately recognize the actual inclination angle of the body
Solution Approach 1:
The patent replaces the motion picture display (visual animation) with a numerical value display that shows the actual inclination angle. This substitution transforms the information presentation from qualitative visual movement to quantitative angular measurement, enabling precise angle recognition while maintaining visual feedback functionality.
Solution Approach 2:
The patent introduces an angle detection unit as an intermediary component that directly measures the body inclination angle and transmits this data to the display. This intermediary provides accurate angular information that bridges the gap between the mechanical hoisting system and the operator's need for precise angle recognition.
2Ease of operation
If the hydraulic cylinder is extended to maximal extent, then the body reaches the standing position, but the risk of shock and damage to the hoist cylinder increases
Solution Approach 1:
The patent applies preliminary anti-action by implementing a stop control unit that prevents the hydraulic cylinder from extending to its maximal extent. The system proactively stops the extension at a predetermined position before the standing position is fully reached, thereby preventing the shock and potential damage that would occur at full extension while still allowing adequate body positioning capability.
3Productivity
If the operator controls hoisting based on motion picture display, then the hoisting operation can be performed, but the operator cannot effectively control the hoist cylinder operation speed according to actual hoisting state
Solution Approach 1:
The patent implements feedback by displaying the actual inclination angle数值 to the operator in real-time. This numerical feedback enables the operator to accurately perceive the current hoisting state and adjust the accelerator pedal operation accordingly, achieving precise control of the hoist cylinder operation speed based on actual conditions rather than relying on imprecise motion picture visualization.
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 system allows operators to easily recognize the inclination angle, facilitating precise control of the hoist cylinder's operation speed, reducing the likelihood of improper body positioning and increasing the durability of the hoist cylinders by providing clear visual feedback on the body's state.
Implementation Method 1
an angle detection unit that detects a rotation angle of the body with respect to the frame
Implementation Method 2
a hydraulic cylinder that moves up and down the body with respect to the frame between a seating position and a standing position
Data Source
AI summary
A body hoisting state display device to be mounted on a dump truck includes: an angle detection unit that detects a rotation angle of the body with respect to the frame; a seating detection unit that detects whether or not the body is seated on the frame; a calculation unit that causes an inclination angle of the body at which the body is rotated with respect to the frame from a seated state of the body to be calculated, based on the rotation angle detected by the angle detection unit, as a ratio to an angle of a rotatable range that is defined between the seated state and a state in which the hydraulic cylinder is stopped at the position short of the position at which the hydraulic cylinder is extended to the maximal extent; and a display control unit that causes the ratio of the inclination angle of the body that is calculated by the calculation unit to be displayed on a display screen.