Angled Screen Roller Coupling via Bevel Gears and Guide Element
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Solution Overview
Problem
Existing screen devices with screen rollers arranged at an angle pose challenges in coupling, as traditional methods like cardan transmissions generate noise, and bevel gears are difficult to couple when one roller is positioned from below.
Innovation Solution
A screen device with bevel gears mounted on each roller axis, intermeshing when the axes are angled, and a fixed guide element allowing the roller axis to be partially upwards and sideways displaced for coupling, using a displaceable guide element and guide piece with locking mechanisms to secure the gears.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cardan transmission is used to couple screen rollers at an angle, then the screen rollers can be mutually coupled, but it generates great deal of noise
Solution Approach 1:
The patent replaces the cardan transmission mechanical system with a bevel gear mechanism. The bevel gears provide direct meshing between the two screen rollers at an angle, eliminating the intermediate cardan joints that generate noise. This substitution maintains the coupling capability while significantly reducing noise generation through direct gear engagement.
Solution Approach 2:
The patent introduces a fixed guide element as an intermediary component that facilitates the coupling process. This guide element enables the screen roller axis to be positioned and coupled accurately from below, making the assembly process simpler and more reliable while maintaining the quiet operation achieved through bevel gears.
2Object-generated harmful factors
If bevel gears are used to couple screen rollers at an angle, then noise is reduced, but the gear of the second screen roller cannot be coupled with the gear of the already installed screen roller when positioning from below
Solution Approach 1:
The fixed guide element acts as an intermediary that resolves the assembly difficulty. It provides a guided path for the screen roller axis, allowing it to be positioned from below in a controlled manner. The guide element ensures proper alignment and positioning of the bevel gears during assembly, making the coupling process straightforward despite the angular arrangement.
Solution Approach 2:
The patent enables assembly from below by utilizing vertical movement through the fixed guide element. The screen roller axis can move vertically through the guide element to reach the coupling position, then engages with the bevel gear. This adds a vertical dimension to the assembly process, allowing access from below rather than requiring horizontal access that would be blocked by the angular configuration.
3Adaptability or versatility
If screen rollers are arranged at an angle to each other, then they can shield glass sections at angles, but coupling the rollers becomes complex
Solution Approach 1:
The patent replaces complex universal joints or cardan mechanisms with a simpler bevel gear system. The bevel gears are specifically designed to transmit rotation between intersecting shafts at an angle, providing a direct and efficient coupling method. This substitution maintains the angular positioning capability while significantly reducing the complexity of the coupling mechanism.
Solution Approach 2:
The fixed guide element serves as a mediating structure that simplifies the coupling process. It provides a predetermined path and positioning mechanism that guides the screen roller axis into correct alignment with the bevel gear. This intermediary component eliminates the need for complex adjustment mechanisms, making the angular coupling straightforward and reducing overall device complexity.
Data Source
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AI summary
This invention relates to a screen device (1) comprising two screen rollers (2, 3), rotatable about screen roller axes (4, 5) which, in the mounted state of the screen device (1), are arranged at an angle (α) to each other, comprising bevel gears (6, 7) at their end closest to this angle (α), and comprising a fixed guide element (8), in which a screen roller axis (4, 5) is guidingly fittable between the screen roller (2, 3) and the gear (6, 7), at least partly upwards and subsequently at least partly sideways, viewed in a direction transversely to the screen roller axis (4, 5), for the coupling of the bevel gears (6, 7).