Roll Neck Bearing Closure with Pressure Ring for Precise Mounting
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Solution Overview
Problem
Existing bearing locking devices for roll necks require the use of a crane cable to tighten or loosen the ring nut, posing safety and precision issues during the mounting and removal processes.
Innovation Solution
A bearing locking device with a pressure ring and screws that apply the necessary force for mounting and relieving pressure during operation, eliminating the need for a crane cable and ensuring safer and more precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a crane cable is used to tighten or loosen the ring nut, then the bearing can be mounted or removed, but safety risks increase and positioning precision decreases
Solution Approach 1:
The patent extracts the dangerous crane cable operation from the mounting/removal process by introducing a pressure ring with integrated screws that can be tightened with standard tools, eliminating the need for crane cables and improving operator safety
Solution Approach 2:
The pressure ring serves as an intermediary component between the ring nut and bearing, transferring the axial force in a controlled manner and enabling precise positioning without direct crane cable intervention on the bearing itself
2Ease of operation
If a crane cable is used to tighten or loosen the ring nut, then the bearing can be mounted or removed, but positioning precision deteriorates
Solution Approach 1:
The patent removes the imprecise crane cable operation and replaces it with a pressure ring system using standard torque-controlled screws, enabling precise axial positioning of the bearing during mounting
Solution Approach 2:
The patent changes the control parameter from crude crane cable tension to precise screw torque, allowing accurate control of the axial force applied to the bearing and achieving desired positioning precision
3Manufacturing precision
If screws are used to apply axial force to the pressure ring, then precise positioning is achieved, but the screws remain under constant compressive force during operation
Solution Approach 1:
The patent introduces a dynamic mechanism where the pressure ring can move axially relative to the ring nut, allowing the screws to be relieved of constant compressive force during operation while maintaining precise bearing positioning through the controlled pressure ring displacement
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 enhances safety and precision by allowing the screws to be relieved of axial compressive force during operation, reducing the risk of accidents and improving the accuracy of bearing placement and removal.
Implementation Method 1
several screws (115) are rotatably mounted in axial threaded bores (114) distributed around the circumference of the threaded ring (110) for pressing in the axial direction (R) against the pressure ring (140)
Implementation Method 2
the ring nut (130) is screwable and adjustable in the axial direction (R) against the pressure ring (140)
Implementation Method 3
several screws (115) are rotatably mounted in axial threaded bores (114) distributed around the circumference of the threaded ring (110) for pressing in the axial direction (R) against the pressure ring (140)
Data Source
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AI summary
The invention relates to a bearing closure device (100) and to methods for mounting a bearing (200) on a roll neck and for withdrawing the bearing from the roll neck using a bearing closure device. Said bearing closure device (100) comprises a threaded ring (110) that can be pushed onto the roll neck. The threaded ring also comprises an outer thread. Stops (315, 120') are provided on the roll neck, one close to the roll barrel and one away from the roll barrel, for limiting the axial movement of the threaded ring (110). The bearing closure device (100) also comprises a ring nut (130) with an inner thread (132) for screwing onto the outer thread (112) of the threaded ring (110). In order to secure the screwing and unscrewing of the ring nut and to maintain pressure-less screwing whilst the bearing is in operation, a pressure ring (140) is moveably mounted according to the invention, in the axial direction between the bearing (200) and the threaded ring (110). Also, in the threaded ring (110), several screws (115) can be screwed into the axial threaded holes for pressing in the axial direction against the pressure ring (140). Finally, the ring nut (130) can be screwed or adjusted against the pressure ring (140).