Vibratory Sieving Machine Sequential Shaft Drive
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Solution Overview
Problem
Conventional vibratory sieving machines with two rotary shafts and eccentric spindles parallel to each other face challenges of high motor capacity and power consumption, particularly during the initial startup phase.
Innovation Solution
The machine independently drives two rotary shafts with eccentric spindles, allowing for selective suspension of rotary drive force transmission after reaching a stationary state, using a rectangular eccentric spindle and a vibratory pump to supply lubricating oil, thereby reducing motor power consumption and optimizing vibrating direction angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two rotary shafts with eccentric spindles are driven simultaneously, then the vibration direction can be controlled, but the motor capacity and power consumption increase
Solution Approach 1:
The patent applies periodic action by sequentially driving the first and second rotary shafts instead of simultaneous operation. The control mechanism alternates between driving one shaft while the other rotates freely, then switches roles. This periodic operation pattern reduces peak power consumption while maintaining the ability to control vibration direction through the alternating excitation of both shafts.
Solution Approach 2:
The patent implements dynamics by allowing one rotary shaft to transition from a driven state to a freely rotating state, while the other shaft becomes the active driven element. This dynamic switching of operational states between the two shafts enables flexible control of vibration characteristics without requiring both shafts to consume full drive power simultaneously, thus reducing overall power consumption.
2Ease of operation
If two rotary shafts are driven simultaneously, then vibration in specific direction is achieved, but motor capacity increases
Solution Approach 1:
The control mechanism implements periodic action by alternating between driving the first rotary shaft and driving the second rotary shaft. During each cycle, only one shaft receives active drive force while the other rotates freely or at reduced speed. This periodic alternation maintains the capability to generate controlled vibrations in specific directions while reducing the peak motor capacity requirements compared to simultaneous dual-shaft driving.
3Speed
If rotary shafts are started simultaneously, then both shafts reach operating speed, but power consumption peaks
Solution Approach 1:
The patent applies preliminary action by first driving one rotary shaft to its operating speed and stabilizing it before initiating the drive of the second rotary shaft. This sequential startup approach ensures that the first shaft is already at optimal operating conditions when the second shaft begins acceleration, avoiding the simultaneous high current draw that would occur if both shafts were accelerated from standstill at the same time, thus reducing peak power consumption.
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 reduces motor power consumption by approximately 15% and enhances sieving efficiency by adjusting vibrating direction angles, allowing for efficient conveying and sieving operations with reduced energy loss.
Implementation Method 1
a vibration pump to supply the lubricating oil into the bearing of the rotary shaft
Implementation Method 2
two rotary shafts 31a, 31b provided with eccentric spindles 32a, 32b disposed parallel to each other
Data Source
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AI summary
In a vibration generating machine having two rotary shafts provided with eccentric spindles disposed parallel to each other, motors Ma, Mb are disposed so as to reduce the capacity or power consumption of the motors required in a vibration generating machine having two rotary shafts provided with eccentric spindles disposed parallel to each other, and to drive the two rotary shafts 31a, 31 b independently, and a rotary drive control mechanism is constituted so that either one of the two rotary shafts 31a, 31b may be started upon start, while the other rotary shaft may started after the rotary drive state of this rotary shaft is transferred to a stationary state.