Integrated Work Vehicle Brake Assembly With Wear Compensation
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Solution Overview
Problem
The existing braking systems in agricultural vehicles are cumbersome, limiting space and design freedom, and are affected by wear of brake components which compromises braking performance.
Innovation Solution
A compact braking assembly that integrates service brake and SAHR brake components, utilizing a unique configuration of brake discs, an intermediate disc, and a clearance recovery device to maintain consistent braking performance despite wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If separate disc brakes and SAHR brakes are used in conventional vehicles, then braking function is achieved, but the volume occupied by braking components increases and space is limited
Solution Approach 1:
The patent combines the service brake and SAHR brake into a single integrated braking assembly. The brake disc serves both service braking and parking braking functions, with the friction member integrated directly onto the brake disc. This merging eliminates the need for separate brake components and reduces overall braking system volume.
Solution Approach 2:
The brake disc is designed to perform multiple functions: it serves as the rotating component for service braking and simultaneously carries the friction member for parking braking. The intermediate disc also serves dual purposes by providing structural support and facilitating both braking modes. This multi-functionality reduces the number of components needed.
2Reliability
If conventional separate braking systems are used, then braking is achieved, but wear of brake components compromises braking performance
Solution Approach 1:
The clearance recovery device continuously monitors and adjusts the position of the friction member relative to the brake disc. As the friction member wears down, the device automatically compensates by adjusting the clearance, ensuring consistent braking performance throughout the service life of the brake components.
Solution Approach 2:
The clearance recovery device is designed to automatically compensate for wear without requiring external intervention or manual adjustment. The spring mechanism self-adjusts the friction member position based on wear-induced clearance changes, maintaining optimal braking contact.
3Adaptability or versatility
If conventional braking arrangements are used, then braking function is provided, but design freedom is severely limited
Solution Approach 1:
By merging the service brake and SAHR brake into a single compact assembly, the patent frees up significant space within the vehicle. This integrated design allows greater flexibility in vehicle layout and component placement, enhancing overall design freedom.
Solution Approach 2:
The patent utilizes the axial dimension along the rotational axis of the brake disc to arrange components efficiently. The intermediate disc and friction member are positioned along this axis, creating a compact three-dimensional arrangement that maximizes space utilization and enables versatile design configurations.
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 reduces the volume occupied by braking components, enhances design flexibility, and ensures consistent braking performance by automatically compensating for wear through the clearance recovery device.
Implementation Method 1
a clearance recovery device comprising a brake piston adapted to cooperate with the brake disc and actuable parallel to the rotational axis, and an elastic element arranged about the brake piston and adapted to store a deformation
Implementation Method 2
a service brake adapted to slow down, stop or prevent the rotation of the wheel about its rotational axis
Implementation Method 3
The SAHR brake generally comprises a friction member, which is spring biased against an abutment element
Implementation Method 4
brake pads, which are adapted to be pressed against the brake disc in order to generate friction and, consequently, a braking action
Data Source
Figure 1~2
Figure 3
Figure 4A~4D
AI summary
Braking assembly (10; 10'; 10'' ; 10III; 10IV) for a work vehicle (1; 1'; 1" ; 1III; 1IV) comprising a first brake disc (8, 7), which is rotatable integrally with a wheel of the work vehicle (1; 1' ; 1" ; 1III; 1II) about a rotational axis (A), a first brake piston (53; 53'; 53''; 53III; 53IV) and a second brake piston (54; 54'; 54''; 54III; 54IV) which are both adapted to cooperate at least indirectly with the first brake disc (8, 7) and elastic means (55), which are adapted to elastically urge the second brake piston (54; 54'; 54''; 54III; 54IV) to cooperate with the first brake disc (8, 7).