Lifting Arrangement with Movable Pivot for Construction Machines
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Solution Overview
Problem
Construction machines face limitations in lifting capacity due to weight distribution and stability issues, which affect operational efficiency and require increased weight and power, leading to decreased drivability and overall efficiency.
Innovation Solution
A lifting arrangement with a main arm and guiding means that allows for a curved path movement of the equipment connector, shifting the pivot center and reducing tilting moment, enhancing loading and lifting capacity without increasing the machine's weight or efficiency loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If weight distribution is varied or total weight is increased to enhance lifting capacity, then lifting capacity is improved, but drivability and overall efficiency deteriorate
Solution Approach 1:
The pivot center of the main arm is made movable in the front-rear direction through the main arm support means, allowing the lifting arrangement to dynamically adjust its geometry during operation. This dynamic configuration enables enhanced lifting capacity without permanently increasing the machine's total weight or compromising drivability.
2Force
If drive sources are designed for increased weight to maintain lifting capacity, then lifting capacity is maintained, but overall efficiency decreases
Solution Approach 1:
The invention changes the geometric parameters of the lifting arrangement by allowing the pivot center to move in the front-rear direction. This parameter change optimizes the mechanical advantage during lifting operations, enabling the system to achieve higher lifting capacity with the same drive source, thereby improving overall efficiency.
3Device complexity
If a stationary pivot center is used for the main arm, then结构简单性 is maintained, but lifting capacity is limited due to weight distribution constraints
Solution Approach 1:
The main arm support means enables the pivot center to move dynamically in the front-rear direction, transforming the static structure into a dynamic one. This adds functional capability for enhanced lifting capacity while maintaining relatively simple structural implementation through the support means mechanism.
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 lifting arrangement increases loading and lifting capacity while maintaining efficiency by reducing tilting moment and allowing for a compact, lightweight construction machine design with reduced fuel consumption.
Implementation Method 1
a guiding means which is engaged to said main arm at a guided portion of said main arm positioned between said pivot connector and said equipment connector, wherein upon pivoting said main arm between said lowered position and said lifted position, said guided portion is guided by said guiding means along a curved path
Data Source
AI summary
A lifting arrangement for a construction machine comprises a main arm (3) which is provided with a pivot connector (4) at a proximate end thereof and an equipment connector (5) at a distal end thereof, a main arm support means (6) for pivotably supporting said pivot connector (4) of said main arm (3), wherein said main arm support means (6) is movable in a direction which includes at least a component in the front-rear direction with respect to said frame arrangement. Further a guiding means (7) is provided which is engaged to said main arm (3) at a guided portion (10) of said main arm (3) positioned between said pivot connector (4) and said equipment connector (5).