Comminuting Device Comb Flap Spring Mounting
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Solution Overview
Problem
Existing comminution apparatuses are heavy and costly due to the stiff design of the comb flap, which complicates transportation and increases material costs, especially for mobile machines where weight limitations are stringent.
Innovation Solution
The second end of the spring means is directly supported on the machine frame, reducing the bending moment on the comb flap and allowing it to be designed for minimal necessary stability, thus reducing the overall weight of the apparatus by up to 60% and lowering material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the comb flap is designed to be stiff to absorb reaction forces from the comminution process, then the structural strength and stability are improved, but the weight and material costs increase significantly
Solution Approach 1:
The patent extracts the force-absorbing function from the comb flap by introducing a separate spring means that directly engages the comb with the machine frame. This removes the disturbing element (force absorption duty) from the comb flap, allowing it to be designed for minimal necessary stability rather than high stiffness, thereby resolving the contradiction between strength and weight.
Solution Approach 2:
The spring means acts as an intermediary element between the comb and the machine frame, transferring reaction forces directly to the frame without requiring the comb flap to absorb them. This mediator takes over the force absorption function, enabling the comb flap to be lightweight while maintaining overall structural integrity.
2Reliability
If the comb flap is designed with high stiffness to transfer reaction forces to the machine frame, then the reliability under load is improved, but the ease of transportation deteriorates due to increased weight
Solution Approach 1:
The patent extracts the force transfer function from the comb flap structure itself and relocates it to a dedicated spring means that directly connects the comb to the machine frame. This separation allows the comb flap to be lightweight for easy transportation while the spring means ensures reliable force transfer under operational loads.
Solution Approach 2:
The spring means introduces dynamic flexibility to the force transfer mechanism, allowing the comb to move resiliently under load while maintaining reliable connection to the machine frame. This dynamic approach replaces the static high-stiffness design, reducing weight without compromising reliability.
3Stability of the object's composition
If the spring means is arranged with its second end on the comb flap, then the comb can be supported resiliently, but the bending moment on the comb flap increases requiring reinforced design
Solution Approach 1:
The patent extracts the bending moment generation from the comb flap system by relocating the spring means' second end attachment point to the machine frame. This removes the disturbing effect of bending moments on the comb flap, allowing resilient comb support without requiring reinforced flap design.
Solution Approach 2:
The patent creates a separate force transfer path through the spring means that copies the support function previously attempted through the comb flap. By duplicating the support function through a different mechanism (spring means directly to frame), the comb flap's structural demands are eliminated.
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 design significantly reduces the weight and material requirements of the comminution apparatus, enhancing mobility and reducing operational costs while maintaining safety and efficiency during overloading conditions.
Implementation Method 1
at least one spring means engages the comb with its first end and wherein the comb is resiliently supported via the spring means
Data Source
AI summary
An exemplary aspect encompasses a comminution apparatus for comminution of material to be comminuted which includes a machine frame, a driven comminution roller which is mounted on the machine frame and comminution tools. A comb including counter tools and a comb flap is pivotably mounted on the machine frame, wherein the comminution roller cooperates with the comb for comminution, wherein the comb is pivotably mounted on the comb flap in the range of its upper end, wherein at least one spring means engages the comb with its first end and wherein the comb is resiliently supported via the spring means. In accordance with one aspect the spring means is supported by its second end on the machine frame.