Distribution Boom Hydraulic Control Under Pump Supply Limits
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Solution Overview
Problem
Existing systems for controlling the movement of distribution booms in construction material and thick matter pumps face inefficiencies due to inadequate hydraulic supply, leading to potential starvation of boom arms, path deviations, and safety hazards.
Innovation Solution
A method and system for controlling the total movement of a distribution boom by monitoring hydraulic supply and adjusting the supply to boom drives proportionally, reducing supply to some drives more than others, or increasing supply as needed, to maintain uniform movement speeds and prevent starvation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single hydraulic pump device supplies all boom drives, then device complexity is reduced, but hydraulic supply becomes insufficient leading to boom arm starvation
Solution Approach 1:
The hydraulic supply system is segmented into multiple independent hydraulic pump devices, each responsible for supplying specific boom drives. This segmentation ensures that each drive receives sufficient hydraulic liquid independently, preventing starvation while maintaining manageable system complexity through modular architecture.
Solution Approach 2:
Each boom drive is equipped with its own hydraulic pump device, providing localized hydraulic supply. This local quality approach ensures that each drive receives adequate hydraulic liquid regardless of the operational state of other drives, eliminating the starvation problem while keeping the overall system complexity distributed and manageable.
2Quantity of substance
If hydraulic supply is reduced proportionally to all drives, then pump device size can be reduced, but movement precision deteriorates due to uniform speed reduction
Solution Approach 1:
The control system applies local quality by allowing different boom drives to operate at different movement speeds based on their individual hydraulic supply availability. When hydraulic liquid is insufficient, only the affected drives reduce their speed while others maintain normal operation, preserving overall movement precision rather than uniformly reducing all speeds.
Solution Approach 2:
The system dynamically adjusts the movement speeds of individual boom drives based on real-time hydraulic supply conditions. Each drive's speed is independently controlled according to its hydraulic liquid availability, enabling the system to adapt to varying supply conditions while maintaining optimal movement precision for each component.
3Reliability
If pump device is oversized to ensure sufficient supply, then hydraulic supply reliability improves, but device complexity and cost increase
Solution Approach 1:
The hydraulic pump system is segmented into multiple smaller pump devices, each serving specific boom drives. This segmentation allows each pump to be sized appropriately for its designated drives rather than requiring one oversized pump to handle all drives simultaneously, reducing overall device complexity while maintaining sufficient supply reliability.
Solution Approach 2:
Each boom drive has its own dedicated hydraulic pump device, providing localized supply that is precisely sized for that drive's requirements. This eliminates the need for oversized centralized pumps while ensuring reliable hydraulic supply to each drive independently, optimizing both reliability and device size.
4Use of energy by moving object
If proportional reduction of hydraulic supply is applied, then energy consumption is reduced, but boom arm movement uniformity deteriorates
Solution Approach 1:
The control system applies local quality by independently adjusting the movement speed of each boom drive according to its specific hydraulic supply conditions. When energy reduction is needed, only the drives with insufficient hydraulic supply reduce their speed, while others maintain normal operation, preserving movement uniformity across the boom structure.
Solution Approach 2:
The system dynamically adjusts individual drive speeds based on real-time hydraulic supply and energy requirements. Each drive's speed is independently optimized to balance energy consumption with movement uniformity, allowing the system to reduce overall energy use while maintaining coordinated boom arm movement through adaptive control.
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
This approach ensures accurate and safe movement of the distribution boom, avoids oversizing the pump system, reduces costs, and minimizes potential hazards by maintaining consistent movement speeds and positions, even in cases of insufficient hydraulic supply.
Implementation Method 1
a plurality of boom arms (2a-e) which can be moved by means of a plurality of hydraulic drives (3a-f)
Data Source
AI summary
A method controls a total movement of a distribution boom, wherein the distribution boom has a number of boom arms, wherein the boom arms can be moved by means of a number of hydraulic drives. The method includes the following steps: a) monitoring whether, for the total movement, at least one drive of the drives is insufficiently supplied by a hydraulic pumping device for supplying the drives with hydraulic liquid; and b) in the event of insufficient supply, controlling a non-proportional reduction of the supply of the drives with hydraulic liquid for the non-proportional reduction of movement speeds of the drives and/or an increase of the supply of the drives with hydraulic liquid by the pumping device.