Threaded Screen Module Fastening Without Hammer Impact
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Solution Overview
Problem
The existing methods for fastening screening modules to screen panel supports are hazardous due to the high forces required, posing a risk of injury to maintenance personnel, and are inefficient as they necessitate the use of hammers and crowbars for installation and removal.
Innovation Solution
A fastening device comprising a first element attachable to the screen panel support and a second element with grooves on its periphery, allowing for secure attachment using a screwing tool instead of hammers, and featuring materials with varying rigidity and elasticity to facilitate easy handling and minimize wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hammer is used to knock down a locking element (pin) into a sleeve to fasten screening modules, then the screening modules can be secured to the screen panel support, but maintenance personnel are exposed to high risk of injury due to the substantial forces required
Solution Approach 1:
The patent replaces the traditional hammer-based mechanical fastening system with a screwing mechanism. The device includes a first element attachable to the screen panel support and a second element that engages with the first element through threading, allowing screening modules to be fastened by screwing rather than hammering. This substitution eliminates the need for high-force impacts while maintaining secure fastening, thereby reducing injury risk to maintenance personnel.
2Ease of repair
If crowbars or similar tools are used to pull pins out of sleeves for removing screening modules, then the modules can be detached, but personnel are subjected to high forces and occupational injury risks
Solution Approach 1:
The patent replaces the crowbar-based removal method with a screwing mechanism. The same device used for fastening can be reversed for detachment by unscrewing the second element from the first element. This eliminates the need for high-force prying actions with crowbars, making the detachment process safer while maintaining ease of repair.
3Area of moving object
If the entire screening surface consists of a single screening module with minimum supporting points, then the active surface is maximized, but operating expenses increase due to the need to exchange the entire screen deck even for local wear
Solution Approach 1:
The patent divides the screening surface into multiple interchangeable screening modules that can be independently replaced. Each module is fastened to the screen panel support using the screwing device, allowing individual modules to be detached and replaced without affecting the entire screen deck. This segmentation enables localized maintenance while preserving the majority of the screening surface, thereby improving operating efficiency.
4Strength
If supporting sections are arranged at shorter intervals to increase rigidity of screening modules, then the active surface is reduced due to increased dead surface, but module strength is improved
Solution Approach 1:
The patent extracts the supporting sections from the screening module design itself and transfers them to the screen panel support structure. The screening modules can therefore be designed with larger active surfaces and fewer integrated supports, while the rigidity requirement is met by the external support framework. This separation allows optimization of both active surface area and overall structural strength.
Data Source
AI summary
The invention relates to a screen, which has a screen panel support and screening modules arranged in the screen panel support. The screening modules are fastened to the screen panel support by means of at least one device. The device comprises a first element attachable to the screen panel support and adapted to receive a opening of the screening module or an opening created by adjacent screening modules, the first element having an outer threading, and a second element having an inner threading for engagement with the outer threading of the first element, such that the screening module is attached to the screen panel support upon interconnection between the first element and the second element. The screen is characterized in that an outer periphery of the second element comprises at least one groove for engagement with a handling tool. The invention also relates to a method for fastening a screening module to a screen panel support.