Crushing Device Comb System Spring Suspension Guide
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Solution Overview
Problem
Existing crushing devices with spring-loaded screening elements face issues of overloading leading to compression spring deformation and breakage due to 'block pressure' and random contact points, resulting in device failure and increased downtime.
Innovation Solution
Incorporating a suspension system with an end position limit and a cylindrical body made of elastic material within the compression spring, which prevents S-shaped deformation and point-like contacts, and using spiral springs with end disks for secure fastening, along with adjustable elastomer properties to manage suspension behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If compression springs are used for spring-mounted screening elements, then the screening elements can accommodate lateral yielding movements, but the springs become deformed into S shape and may break due to random contact points and local overload
Solution Approach 1:
A guide element is introduced as an intermediary component between the screening element and the compression spring. This guide element constrains the screening element's movement to a controlled path, preventing random contact points and S-shaped deformation of the spring while still allowing lateral yielding movements. The guide element mediates between the need for adaptability and the need to prevent spring failure.
Solution Approach 2:
The invention changes the geometric parameters and movement constraints of the screening element assembly by introducing the guide element. This modifies the movement pattern from uncontrolled random motion to controlled motion along a defined path, thereby changing the stress distribution on the spring and preventing the harmful S-shaped deformation.
2Force
If compression springs are compressed by process strain to block pressure, then the screening elements can handle heavy loads, but this leads to contact with spring wire coils causing local overload and breakage
Solution Approach 1:
The guide element acts as a mediator that distributes the compressive force more evenly across the spring structure. By constraining the movement path, it prevents concentrated loads at random contact points, thereby maintaining load handling capacity while preventing local overload that leads to wire coil breakage.
3Productivity
If the screening device encloses the crushing roller, then screening effectiveness is improved, but the structure becomes more complex and harder to maintain
Solution Approach 1:
The screening device is segmented into modular components: the base comb with mounting slots, individual screening elements, guide elements, and compression springs. This segmentation allows the screening device to enclose the crushing roller effectively while maintaining simplicity through modular assembly and disassembly. Each component can be independently replaced or maintained without affecting the entire structure.
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 solution reduces overloading, prevents spring coil contact, decreases fault susceptibility, and allows for specific nonlinear suspension characteristics, thereby minimizing downtime and improving device reliability.
Implementation Method 1
the screening element is spring-mounted with a suspension on the base comb
Implementation Method 2
The suspension is formed from at least one compression spring configured as a spiral spring, in the core of which at least one cylindrical body made from an elastic material is arranged
Data Source
AI summary
One aspect relates to a crushing device with a comb system, wherein the crushing device includes at least one crushing roller rotatably mounted in a machine frame with at least one crushing tool arranged thereon, wherein the crushing device comprises at least one counter blade which cooperates with the crushing tool, wherein the comb system includes at least one base comb on which the at least one counter blade is arranged and on which at least one screening element can be arranged as a component of a screening device. The screening device during use at least partly encloses the crushing roller and the screening element is spring-mounted with a suspension on the base comb. The suspension includes an end position limit.