Hinged AGV Chassis Structure for Uneven Terrain Traction
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Solution Overview
Problem
The existing AGV chassis design results in insufficient positive pressure on driving wheels due to uneven road conditions, leading to slipping and difficulty in movement, as the load is predominantly borne by driven wheels.
Innovation Solution
A chassis design with a hinged front and rear frame that allows for relative folding, enabling driving and driven wheels to touch the ground simultaneously on uneven surfaces, and incorporates a damping device to restrict excessive folding angles and reduce vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an integral chassis structure is used, then the chassis is simple in structure and easy to manufacture, but the driving wheels cannot maintain sufficient positive pressure on uneven roads, causing slipping
Solution Approach 1:
The integral chassis is divided into front frame and rear frame that can relatively fold, allowing independent movement of each frame segment to adapt to uneven road surfaces while maintaining driving wheel contact and positive pressure
2Force
If the driven wheels bear most of the load, then the driven wheels can handle heavy loads, but the driving wheels receive insufficient positive pressure and slip
Solution Approach 1:
The chassis transitions from a static integral structure to a dynamic hinged structure where the front and rear frames can relatively fold, dynamically adjusting weight distribution to ensure driving wheels maintain sufficient positive pressure while driven wheels bear load
3Stability of the object's composition
If the front frame and rear frame are rigidly connected, then the chassis structure is stable, but the chassis cannot adapt to uneven roads and the driving wheels lose contact
Solution Approach 1:
The rigid chassis is segmented into front and rear frames connected by a hinge, allowing each segment to move independently to adapt to uneven terrain while maintaining overall structural stability through the hinge connection
Solution Approach 2:
The chassis structure changes from static rigid connection to dynamic hinged connection, enabling the front and rear frames to relatively fold and adapt to varying road conditions while maintaining structural integrity
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
Enhances the safety and stability of the AGV by ensuring even weight distribution and preventing slipping on uneven terrain while reducing chassis damage from excessive vibrations.
Implementation Method 1
the damping device restricts the folding angle of the front frame and the rear frame to prevent that the relative folding angle of the front frame and the rear frame is too large
Implementation Method 2
the damping device restricts the folding angle of the front frame and the rear frame to prevent that the relative folding angle of the front frame and the rear frame is too large to realize the transport function, and damps the folding angle for reducing vibration
Implementation Method 3
a front frame and a rear frame that are docked with each other and which are hinged. A relative folding can generate between the front frame and the rear frame
Data Source
Figure 1
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AI summary
Disclosed are a chassis of an automated guided vehicle and an automated guided vehicle. The chassis includes a front frame (1) and a rear frame (2) that are engaged with each other in a hinged joint manner, so as to allow a relative folding between the rear frame (2) and the front frame (1). The relative folding enables the driving wheels and the driven wheels to touch the ground on a sunken road at the same time to prevent that only the driven wheels (10) touch the ground while the driving wheels (9) slip, and increases the approach angle of the chassis on a convex road to prevent the front end of the chassis from touching any obstacle, which improve the safety of the vehicle. Moreover, the damping device (3) restricts the folding angle of the front frame (1) and the rear frame (2) to prevent that the relative folding angle of the front frame (1) and the rear frame (2) is too large to realize the transport function, and damps the folding angle for reducing vibration.