Differential Gear Drum Brake Segmentation for Maintenance
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Solution Overview
Problem
Existing differential gears with multi-disc brakes face maintenance challenges due to the intricate arrangement of braking elements within the differential housing.
Innovation Solution
The braking device is designed as a separate component with a drum or radial brake, positioned outside the differential housing but adjacent to it, featuring a passive element with a cylindrical friction surface and pivotally supported brake shoes, allowing for easy access and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the braking device is integrated within the differential housing, then the braking system is compact, but the braking elements become difficult to maintain
Solution Approach 1:
The braking device is segmented from the differential housing into a separate, modular unit. This allows the braking system to maintain its compact functional integration while enabling independent access and maintenance of braking elements without disassembling the entire differential assembly.
Solution Approach 2:
The braking device is extracted from the internal housing and positioned as an external component adjacent to the differential housing. This extraction maintains the compact overall design while providing easy accessibility for maintenance operations on the braking elements.
2Ease of operation
If the braking device is positioned outside the differential housing, then maintenance accessibility is improved, but the overall structural integration is reduced
Solution Approach 1:
The braking device is merged with the differential housing through adjacent positioning and shared mounting structures. This creates a functionally integrated assembly that maintains structural coherence while allowing the braking components to be accessed and serviced independently from the main differential housing.
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 configuration simplifies maintenance and enhances accessibility of the braking system while maintaining a compact design, ensuring effective braking performance.
Implementation Method 1
a drum brake, which has a passive element (21) that has a cylindrical friction surface, and brake shoes (25), the friction surfaces of which can be placed on the cylindrical friction surface of the passive element (21)
Data Source
Figure 1
Figure 2
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AI summary
Differentials having a clutch pack for applying a decelerating torque to the output shafts of the differential are known from the prior art. The aim is to design the deceleration device in such a way that deceleration is effective and the deceleration device is easy to service. To achieve said aim, the deceleration device (2) is a drum brake that includes a passive element having a cylindrical frictional surface and also includes brake shoes (25), the frictional surfaces of which can come into contact with the cylindrical frictional surface of the passive element (21, 30). The passive element (21, 30) can be a brake drum (21) or a radial brake disk (30), the cylindrical edge of which acts as a frictional surface. According to the invention, the passive element (21, 30) is fastened to the differential cage (9) and/or to one of the shafts (7, 11, 12). The brake shoes (25) are pivotally retained on a support plate (16, 31) that is externally fastened to the differential casing (2).