Mixing Machine Vibration Device with Eccentric Bearing Offset
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Solution Overview
Problem
Conventional vibrational mixing machines face issues with structure, vibration effect, and reliability, particularly in mixing materials that are less easily blended, leading to agglomeration of cement particles and poor concrete quality.
Innovation Solution
A vibration device with a transmission shaft and second bearing housing offset from the rotational centerline, utilizing eccentric seam allowances and a flange for connection, along with an eccentric sleeve and balance weights for dynamic balancing, to enhance vibration stability and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional vibrational mixing machines are used, then mixing efficiency is improved, but structure complexity increases and reliability decreases
Solution Approach 1:
The device is divided into independent functional modules: vibration transmission device, transmission shaft, first bearing housing with first bearings, second bearing housing with second bearing, and mixing shaft. Each module can be independently manufactured, assembled, and maintained, reducing overall system complexity while improving reliability through modular design.
Solution Approach 2:
The transmission shaft serves as an intermediary component that couples the vibration transmission device to the mixing shaft. It transmits vibrational energy while being supported by bearings in separate bearing housings, acting as a mediator that isolates and manages the transmission of dynamic loads between components.
2Manufacturing precision
If vibration transmission is enhanced for better mixing quality, then mixing quality improves, but device complexity increases
Solution Approach 1:
The transmission shaft is deliberately designed with its rotational centerline offset from the axis of the outer raceway of the second bearing. This asymmetric configuration generates the necessary vibrational motion for improved mixing quality while maintaining a relatively simple structural form without requiring complex vibration mechanisms.
Solution Approach 2:
The device utilizes mechanical vibration generated by the offset between the transmission shaft rotational centerline and the second bearing outer raceway axis. This vibration enhances particle movement and mixing quality without requiring complex vibration generation mechanisms, achieving effective mixing through simple asymmetric geometry.
3Device complexity
If simple structure is adopted, then device complexity decreases, but vibration effect deteriorates
Solution Approach 1:
Balance weights are added to the transmission shaft to counteract the centrifugal forces generated by the offset configuration during rotation. This maintains vibration stability and prevents excessive vibrations that would compromise mixing quality, while the overall structure remains simple and does not require complex balancing mechanisms.
4Reliability
If offset configuration is used for vibration generation, then vibration effect improves, but manufacturing precision requirements increase
Solution Approach 1:
The first bearings and second bearing are supported in separate bearing housings that provide standardized mounting interfaces. This universal bearing support arrangement allows for easy assembly and adjustment, reducing the stringency of alignment precision requirements while maintaining the beneficial offset configuration for vibration generation.
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 device achieves stable and reliable operation with adaptable vibration amplitude and frequency, ensuring uniform mixing and high mixing quality without load interference.
Implementation Method 1
The rotational centerline of the transmission shaft is arranged so as to be offset from an axis of an outer raceway of the second bearing
Implementation Method 2
an eccentric sleeve and balance weights for dynamic balancing, to enhance vibration stability and reliability
Implementation Method 3
vibrational mixing allows for an increased speed of movement of particles in blended materials, an increased number of effective collisions
Data Source
AI summary
Vibration devices for a mixing machine are disclosed, including, for example, a vibration transmission device, a transmission shaft, first bearing(s), a first bearing seat, second bearing(s), a second bearing seat, and a mixing shaft. In some embodiments, the transmission shaft may pass through the first bearing seat, and may be supported in the first bearing seat via at least two bearings. Further, one end of the transmission shaft may be connected to the vibration transmission device, and the other end of the transmission shaft may be connected in a fixed manner to the second bearing seat. In addition, the second bearing seat may be connected to a shaft head at one end of the mixing shaft via the second bearing, and, in some implementations, the rotational center line of the transmission shaft may be arranged so as to be offset from an outer axis of the second bearing.