Collision Simulation Apparatus Using Toothed Belt Drive
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Solution Overview
Problem
Existing collision simulation test apparatuses lack precision and require large installation spaces due to their inability to control acceleration waveforms and the long distances traveled by test pieces, leading to inefficiencies and safety concerns.
Innovation Solution
A compact collision simulation test apparatus utilizing a toothed belt system with adjustable effective lengths, driven by low-inertia electric motors, and a linear guide mechanism with ceramic rolling bodies to achieve high precision and flexibility in impact application, eliminating the need for hydraulic systems and reducing installation space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a piston launching device with hydraulic pressure is used to generate impact, then the impact can be adjusted to match actual vehicle collision levels, but the acceleration waveform cannot be controlled and the apparatus becomes large and complex
Solution Approach 1:
The invention extracts and eliminates the complex hydraulic pressure accumulation system and piston launching mechanism from the apparatus. Instead, it uses a simplified motor-driven toothed belt system that directly transmits power to move the table, removing unnecessary complexity while maintaining impact generation capability through controlled acceleration and deceleration of the table itself
Solution Approach 2:
The invention replaces the hydraulic mechanical system (accumulator, piston, hydraulic pressure) with an electrical-mechanical system (motor, toothed belt, pulley). This substitution enables precise control of acceleration waveforms through electrical control while simplifying the overall apparatus structure and eliminating the need for complex hydraulic components
2Force
If the thread is pushed by the piston for a long distance due to inertia, then the impact can be generated, but the overall length of the apparatus becomes exceedingly long requiring large installation space
Solution Approach 1:
The invention makes the effective length of the toothed belt adjustable rather than fixed. The toothed belt can be repositioned along the table to change its effective length, allowing the apparatus to generate sufficient impact force with a shorter overall structure. This dynamic adjustment capability enables the same impact force to be achieved in a more compact configuration
Solution Approach 2:
The invention changes the parameter of belt length from a fixed value to an adjustable variable. By allowing the effective length of the toothed belt to be modified, the system can optimize the balance between impact force generation and apparatus compactness, eliminating the need for excessively long fixed-structure designs
3Device complexity
If the toothed belt effective length is fixed, then the structure is simple, but the adaptability to different test conditions is limited
Solution Approach 1:
The invention introduces adjustability to the toothed belt effective length, transforming it from a static fixed parameter to a dynamic可调 parameter. This allows the same basic structure to adapt to different test conditions by simply repositioning the belt, providing versatility without requiring multiple different apparatus configurations
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 apparatus enables high-precision collision simulation with the ability to apply impacts of varying waveforms to test pieces, reducing the apparatus size and improving safety by eliminating hydraulic pressures and enhancing control over impact conditions.
Implementation Method 1
a linear guide for supporting the table and the pusher to be movable in the predetermined direction
Implementation Method 2
a toothed belt for transmitting power; a pair of toothed pulleys around which the toothed belt is wound
Implementation Method 3
an impact generating part for generating an impact to be applied to the test piece by a collision with the table
Data Source
Figure 1
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Figure 3
AI summary
A collision simulation test apparatus according to an embodiment of the present invention includes a table to which a test piece is to be attached and a toothed belt for driving the table in a driving direction, and the toothed belt includes a carbon core wire.