Height-Adjustable Tray Cart for Efficient Loading
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Summary
Problems
Conventional carts lack height adjustability, making it difficult for workers to load or unload heavy workpieces from positions higher than the cart's surface, which is inconvenient and inefficient.
Innovation solutions
A cart with a height-adjustable tray is designed, featuring a frame body, a tray with sliding grooves, a driving mechanism including a motor and inverter, and a transmission mechanism using a screw shaft, pulleys, and ropes to allow the tray to move up or down, enabling easy adjustment of the tray's height.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If the cart has a fixed surface height, then the structure is simple, but it is inconvenient for workers to load or unload workpieces from positions higher than the surface
Why choose this principle:
The tray is transformed from a fixed structure to a movable one through the integration of a screw shaft and pulley system. The tray can be dynamically adjusted to different heights by rotating the screw shaft, which drives the tray along guide bars via the pulley mechanism, thereby resolving the contradiction between operational convenience and structural simplicity.
Principle concept:
If the cart has a fixed surface height, then the structure is simple, but it is inconvenient for workers to load or unload workpieces from positions higher than the surface
Why choose this principle:
A pulley system acts as an intermediary mechanism between the screw shaft and the tray. The pulleys transmit the rotational motion of the screw shaft into linear motion of the tray, enabling height adjustment without requiring direct mechanical connection, thus maintaining relative structural simplicity while achieving the desired functionality.
Application Domain
Data Source
AI summary:
A cart with a height-adjustable tray is designed, featuring a frame body, a tray with sliding grooves, a driving mechanism including a motor and inverter, and a transmission mechanism using a screw shaft, pulleys, and ropes to allow the tray to move up or down, enabling easy adjustment of the tray's height.
Abstract
A cart includes a frame body, a tray, a driving mechanism, and a transmission mechanism. The frame body includes a top portion, a bottom portion including a number of castors, and a number of connecting bars between the top portion and the bottom portion, which cooperatively defines a receiving space. The tray is configured to support a workpiece and to be slidably received in the receiving space. The transmission mechanism is connected between the tray and the driving mechanism to transmit the power of the driving mechanism to the tray to drive the tray to move in the receiving space.