Multi-stage Load Adjustment Moving Cart with Hydraulic Height Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing transfer carts face challenges with fixed loading box heights, complex structures leading to malfunctions, difficulty in supporting heavy loads, and limited adaptability for varying cargo weights, as well as safety issues due to obstructed visibility when moving with loaded cargo.
Innovation Solution
A multi-stage load adjustment type moving cart that uses hydraulic pressure and a load spring, adjustable via a foot pedal, allowing for easy height adjustment and conversion to a fork shape for pallet transport, equipped with sensors and a control module for obstacle detection and collision prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a link structure is used for raising and lowering the mounting frame, then the height can be adjusted, but the structure becomes complex and prone to malfunctions
Solution Approach 1:
The patent removes the complex link structure from the system and replaces it with a simpler hydraulic cylinder mechanism. The hydraulic cylinder directly raises and lowers the mounting frame without requiring intermediate linkages, thereby extracting the problematic complexity while preserving the height adjustment function.
Solution Approach 2:
The patent replaces the mechanical link structure with a hydraulic system. The hydraulic cylinder uses fluid pressure instead of mechanical linkages to achieve the raising and lowering motion, substituting a complex mechanical system with a simpler hydraulic actuation system that is more reliable and easier to control.
2Ease of operation
If the mounting frame is raised or lowered by vertical expansion and contraction of the link structure, then height adjustment is achieved, but stable load support and precise height adjustment become difficult when the weight of loaded materials is large
Solution Approach 1:
The patent replaces the mechanical link structure with a hydraulic cylinder that provides superior load support capability. The hydraulic system can generate and maintain high forces to support heavy loads while providing precise control over the mounting frame position, overcoming the limitations of mechanical linkages under heavy weight conditions.
Solution Approach 2:
The patent introduces a hydraulic cylinder to provide powered actuation for the mounting frame. The hydraulic system delivers high force output for supporting heavy loads and enables precise position control through fluid pressure regulation, resolving the issues of unstable load support and imprecise adjustment that occur with mechanical link structures.
3Ease of operation
If a worker adjusts the raising and lowering height through a pump or electric motor, then height can be changed, but the time consumed for adjusting height increases, reducing work efficiency
Solution Approach 1:
The patent implements a foot-operated pump that allows the worker to adjust the hydraulic cylinder pressure and mounting frame height using leg motion during normal walking or standing. This self-service mechanism eliminates the need for separate manual cranking or complex electrical controls, enabling quick height adjustments without interrupting work flow and maintaining high productivity.
4Ease of operation
If the transfer cart moves with cargo loaded, then transportation is achieved, but it becomes difficult to look ahead due to the height of the cargo, causing frequent collisions
Solution Approach 1:
The patent makes the mounting frame height dynamically adjustable through the hydraulic cylinder system. The worker can raise the mounting frame to eye level when moving with light loads for improved visibility, and lower it when carrying heavy loads for easier loading/unloading. This dynamic height adjustment allows the system to adapt to different operational conditions, resolving the visibility obstruction problem during transportation.
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 work efficiency and safety by allowing easy height adjustment, stable load support, and real-time obstacle detection, reducing the risk of accidents and improving visibility while moving loaded cargo.
Implementation Method 1
an inclination angle adjustment unit (30) installed on one side of the vertical frame (20), configured to receive an operating force to generate an operating pressure, and configured to selectively elongate the rod (35r)
Implementation Method 2
a raising and lowering unit (40) including a raising and lowering body (41) provided with a first roller (42) and a second roller (43) coming into rolling contact with a polygonal fixed rail (23) and a load spring (46) having one end fixed to one side of the raising and lowering body (41), having the other end fixed to an inclination roller (45) coming into rolling contact along the variable inclination rail (25), configured to apply an elastic force
Implementation Method 3
a raising and lowering unit (40) including a raising and lowering body (41) provided with a first roller (42) and a second roller (43) coming into rolling contact with a polygonal fixed rail (23)
Data Source
AI summary
The present disclosure discloses a multi-stage load adjustment type moving cart. The multi-stage load adjustment type moving cart according to the present disclosure includes: a base frame; a vertical frame vertically installed on one side of the base frame; an inclination angle adjustment unit installed on one side of the vertical frame and configured to selectively elongate a rod; a variable inclination rail having an upper one end supported to be rotatable around a hinge point hinge-coupled to the vertical frame and having one lower end connected to the inclination angle adjustment unit; and a raising and lowering unit including a raising and lowering body provided with a first roller and a second roller coming into rolling.