Heald Frame Shaft Coupling Bearing Support Maintenance
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Solution Overview
Problem
Existing shaft couplings for heald shafts suffer from wear issues, requiring frequent replacement of the entire coupling half, including the hexagonal ring, due to inadequate lubrication and wear, which complicates maintenance and repair.
Innovation Solution
A connection device with a bearing support that allows the coupling piece and bearing to be easily replaced without disassembling the bearing support from the heald frame, using a screw connection that can be loosened to facilitate the removal and reinsertion of the coupling piece and bearing, enabling separate exchange without deforming the support structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hexagonal ring and bearing are permanently fixed to the bearing bracket, then the connection is strong and reliable, but maintenance requires replacement of the entire bearing bracket assembly
Solution Approach 1:
The bearing bracket is divided into a stationary support portion and a movable bearing assembly portion. The bearing assembly can be independently removed from the support bracket through the replacement lane, allowing the bearing and hexagonal ring to be replaced without removing the entire bearing bracket from the heald frame.
Solution Approach 2:
A replacement lane is created in the bearing bracket that allows the bearing assembly to be extracted and reinserted independently. The lane is bounded by opposing planar surfaces that guide the bearing assembly during removal and reinstallation, enabling easy maintenance without affecting the support bracket.
2Stability of the object's composition
If the bearing bracket is permanently attached to the heald frame, then the support structure is stable, but the bearing and coupling piece cannot be replaced without removing the support bracket
Solution Approach 1:
The connection system is segmented into three independent components: the support bracket (permanently attached to heald frame), the bearing assembly (removable via replacement lane), and the coupling piece (attached to bearing). This allows the bearing assembly to be replaced independently while maintaining stable support.
Solution Approach 2:
The replacement lane acts as an extraction pathway that allows the bearing assembly to be removed from the support bracket without detaching the support bracket from the heald frame. The lane provides a clear path through the support bracket structure enabling easy access for maintenance.
3Duration of action of moving object
If the hexagonal ring requires adequate lubrication to prevent wear, then the coupling life is extended, but lubrication systems add complexity and maintenance requirements
Solution Approach 1:
The hexagonal ring is extracted from the bearing bracket and placed on the bearing, which itself can be removed through the replacement lane. This extraction allows the hexagonal ring to be easily accessed and replaced when worn, eliminating the need for complex lubrication systems while extending service life through simple part replacement.
Data Source
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AI summary
The device has a bearing support connected with a heddle shaft and supporting a bearing (20), where the support defines a changing lane (24). A coupling piece (21) is rotatably held on the bearing. A screw joint (31) is arranged between the support and the bearing for holding the bearing at the bearing support. The support includes straps (22, 23) formed as flat at a side turned away from the bearing. The support comprises a conical seat opening or a stepped seat opening for accommodating the screw joint. The bearing is present between plane surfaces.