Bulk Material Dosing Gearbox With Rotational Ratio Selection
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Solution Overview
Problem
Existing dosing devices for bulk materials lack flexibility in adapting to different material properties and conveying capacity requirements, as they typically offer limited gear ratio adjustments, which restricts their operational range and efficiency.
Innovation Solution
A dosing device with a gear mechanism featuring multiple transmission elements arranged in a specific configuration, allowing for various gear ratios to be achieved through rotational positioning without the need for additional gears or complex adjustments, enabling a wide speed range with minimal mechanical effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional gearboxes with limited gear ratios are used, then the device structure remains simple, but the adaptability to different bulk material properties and conveying capacity requirements is poor
Solution Approach 1:
The patent applies universality by designing a gearbox where a single set of gear elements can provide multiple different gear ratios through rotational positioning. The gear elements are arranged on a circle, allowing the gearbox to be rotated to engage different gear pairs, enabling one gearbox structure to serve multiple conveying capacity requirements without needing multiple dedicated gear sets.
Solution Approach 2:
The patent implements dynamics by making the gearbox rotatable around its central axis. This rotational movement dynamically changes which gear elements are engaged, allowing the gear ratio to be adjusted from a fixed value to a selectable range of values. The dynamic repositioning of gear elements through rotation enables flexible adaptation to different operational requirements.
2Speed
If multiple gear ratios are achieved by adding more gear elements, then the speed adjustment range increases, but the mechanical conversion effort and cost increase
Solution Approach 1:
The patent merges multiple gear ratio functions into a single gearbox structure. By arranging multiple gear elements on a circular path within one gearbox housing, the invention combines what would traditionally require multiple separate gearboxes or complex gear trains into one integrated unit. This merging achieves wide speed adjustment range without proportionally increasing mechanical complexity.
Solution Approach 2:
The patent introduces a rotational dimension to the gearbox design. Instead of linearly arranging gear elements or using multiple stacked gearboxes, the invention distributes gear elements around a circular path and utilizes rotation as the adjustment mechanism. This dimensional approach allows multiple gear ratios to be accessed through angular positioning rather than through complex mechanical transformations.
3Adaptability or versatility
If the gearbox is designed with fixed gear elements, then the manufacturing precision is easier to achieve, but the flexibility to adapt to different conveying needs is reduced
Solution Approach 1:
The patent segments the gear elements into discrete, individually positionable units arranged around a circle. Each gear element can be independently engaged or disengaged by rotating the gearbox to specific positions. This segmentation allows flexible reconfiguration of gear ratios without requiring complex precision mechanisms, as each segment (gear element) maintains its own fixed manufacturing tolerances while the system achieves flexibility through their selective combination.
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 solution provides a flexible, efficient, and cost-effective means to adjust speed ratios between shafts, accommodating diverse bulk material properties and conveying needs, while minimizing mechanical conversion effort and avoiding costly modifications.
Implementation Method 1
The gearbox has at least two gear elements which can be coupled to the driven shafts
Data Source
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AI summary
The invention relates to a metering device (1), in particular for bulk material (2), comprising a driveable metering shaft (3), a driveable auxiliary unit shaft (4), a drive shaft (5) and a gearbox (6) interposed between the drive shaft (5) and the metering shaft (3) and/or between the drive shaft (5) and the auxiliary unit shaft (4). In order to achieve the largest possible speed setting range for the metering device, the gearbox (6) provides at least two gearbox elements (7, 7-1, 7-2) that can be coupled to the driven shafts (3, 4), wherein the at least two gearbox elements (7, 7-1, 7-2) are arranged to each other such that their axes of rotation (8, 8-1, 8-2) are parallel to each other and the points of intersection S (9, 9-1, 9-2) of the axes of rotation (8, 8-1, 8-2) with a gearbox plane A normal to the axes of rotation (8, 8-1, 8-2) are evenly distributed on a circumference U of a circle B.