Forklift AGV Differential Drive for Tight-Space Cargo Handling
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Solution Overview
Problem
Forklift-type automated guided vehicles (AGVs) face challenges in navigating narrow spaces due to their large turning radius and inability to perform left-to-right sideways movements and in-place rotations, limiting their functionality in cargo handling scenarios.
Innovation Solution
The design incorporates a body with parallel fork arms equipped with two-wheel differential driving assemblies, allowing independent rotation of left and right driving wheels, which enables differential rotation and improved maneuverability, including in-place rotation and lateral movement, by using a control circuit unit with wireless communication and power management systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a forklift AGV is driven by a steering wheel with a pair of fork arms, then it can fork goods, but the overall length increases and the turning radius becomes large
Solution Approach 1:
The driving system is segmented into multiple independent two-wheel differential driving assemblies distributed at different locations (front, rear, and intermediate positions) on the forklift body. Each assembly can independently rotate and drive, allowing the forklift to achieve complex movements like in-place rotation and lateral movement without requiring a long overall length or large turning radius.
2Speed
If a forklift AGV is driven by a steering wheel, then it can move forward and backward, but it cannot perform left-to-right sideways movement or in-place rotation
Solution Approach 1:
The forklift employs dynamic two-wheel differential driving assemblies that can independently rotate and change orientation during operation. This dynamic capability allows the forklift to perform multiple movement types including forward motion, backward motion, lateral movement, in-place rotation, and U-turns, transforming a statically limited steering-wheel-driven system into a dynamically versatile mobile system.
3Length of moving object
If the left and right driving wheels are independently driven to realize differential rotation, then the turning radius is reduced, but the device complexity increases
Solution Approach 1:
Multiple two-wheel differential driving assemblies are merged and distributed across the forklift body at front, rear, and intermediate positions. Each assembly integrates a rotating base, connecting base, driving members, and driving wheels into a unified modular unit. This merging approach allows the system to achieve a small turning radius through coordinated differential rotation while managing complexity through standardized modular design.
Data Source
AI summary
A forklift-type automated guided vehicle includes a body and a control circuit unit received in the body, both a first fork arm and a second fork arm parallel to each other and formed on a front end of the body to forklift cargo, each of the first fork arm, the second fork arm and a bottom end of the body including at least one two-wheel differential driving assembly rotatably connected to the first and second fork arms, and the body, respectively, and electrically connected to the control circuit unit. The two-wheel differential driving assembly includes a left driving wheel and a right driving wheel formed opposite to each other which can be independently driven to realize differential rotation. The present disclosure not only can forklift cargo with a small turning radius, but also can realize left-to-right sideways movements and an in-place rotation and a U-turn movement.