Hydraulic Circuit Coupling for Faster Distribution Boom Operation
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Solution Overview
Problem
Hydraulic systems used in mobile thick matter pumps, such as concrete pumps, face limitations in pump performance during tasks like unfolding and folding of distribution booms, where only one hydraulic circuit is activated, leading to suboptimal operating speed and efficiency.
Innovation Solution
The system connects the primary and secondary hydraulic circuits via a control valve, allowing hydraulic oil from the primary circuit to be fed into the secondary circuit when the primary consumer is idle, enhancing oil availability and enabling faster operation of the distribution boom without increasing motor-driven pump speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If hydraulic oil is supplied independently to each circuit via separate pumps, then each circuit can operate autonomously, but the operating speed and performance during special tasks are limited by the available pump capacity
Solution Approach 1:
The patent merges the primary and secondary hydraulic circuits by connecting them through a common tank and enabling oil flow between circuits via control valves. This allows the secondary circuit to access oil from the primary circuit's pump during special tasks, effectively combining the power capacity of both circuits to achieve higher operating speeds without requiring additional pump power.
2Productivity
If the pump speed is increased to achieve higher performance during special tasks, then the operating speed improves, but the energy consumption and system stress increase
Solution Approach 1:
The patent makes the hydraulic system multi-functional by enabling the primary circuit's pump to serve both the primary circuit during normal operation and the secondary circuit during special tasks. This universal utilization of existing pump capacity increases productivity during boom operations without requiring additional energy input or increasing pump speeds.
3Speed
If a separate hydraulic pump is added for the secondary circuit to improve operating speed, then the performance during special tasks improves, but the device complexity and cost increase
Solution Approach 1:
The patent implements self-service by enabling the primary circuit's pump to automatically supply oil to the secondary circuit when needed, through control valve activation. The system utilizes its own existing resources (primary pump capacity) to meet the secondary circuit's demands during special tasks, eliminating the need for additional pumps and reducing overall system complexity.
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 configuration allows for increased operating speed and performance in hydraulic systems during special tasks, like rapid unfolding and folding of distribution booms, by reallocating hydraulic oil from the primary circuit to the secondary circuit when the primary consumer is not in use, thereby improving overall system efficiency.
Implementation Method 1
a hydraulic drive unit having at least one motor-driven hydraulic pump (1, 2, 44)
Implementation Method 2
The object of the invention is achieved primarily in that the first consumer arranged in the primary circuit I is expediently designed as a hydraulic drive mechanism of a thick matter pump
Data Source
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AI summary
The invention relates to a hydraulic system, preferably for actuating and engaging a mobile slurry pump. The hydraulic system comprises a primary circuit, actuating a first hydraulic consumer, which circuit has a hydraulic drive assembly comprising at least one motor-driven hydraulic pump (1, 2, 44). The hydraulic system further comprises a secondary circuit 11, actuating a second hydraulic consumer, which circuit has a second hydraulic drive assembly comprising at least one additional motor-driven hydraulic pump (22). In a first operating state, hydraulic oil from a common tank (60) can be admitted to the hydraulic consumers (7, 8; 24) arranged in the primary circuit and in the secondary circuit 11 via the hydraulic drive assemblies thereof, independently of one another. In a second operating state, a portion of the hydraulic oil is supplied from the primary circuit 1 to the secondary circuit 11 to actuate the second consumer (24).