Brake Caliper Mounting Bracket for Compact Railway Vehicles
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Solution Overview
Problem
Conventional brake caliper attachment systems for railway vehicles require significant space due to the need for a support rod, which is not always available, especially in compact designs like trams, limiting installation space and functionality.
Innovation Solution
A device featuring a first and second bolt fixed to the frame, with a first bracket that holds the caliper rotationally fixed in a plane perpendicular to the brake disc's axis and allows rotation about another axis, and a second bracket that transmits radial forces in only one direction, eliminating the need for a support rod and allowing for compact installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a support rod with ball joints is used to attach the brake caliper to the bogie frame, then the caliper can achieve rotational movement and angular mobility, but the device requires significant installation space which is not available in compact rail vehicles
Solution Approach 1:
The invention extracts and eliminates the support rod from the brake caliper attachment system. Instead of using a support rod with ball joints (conventional solution), the patent uses a direct bracket connection to the bogie frame that achieves the required angular mobility through the bracket's geometric design and mounting configuration, thereby removing the space-consuming support rod component
Solution Approach 2:
The invention transitions from a linear support rod configuration to a bracket-based system that utilizes geometric relationships and mounting dimensions in multiple directions. The bracket is designed with specific dimensions and mounting configurations that enable angular mobility through dimensional relationships rather than through a extendable support rod mechanism
2Ease of operation
If a conventional support rod suspension system is used, then the brake caliper can move and rotate relative to the bogie frame, but the support rod length must be sufficient to provide freedom of movement, which increases the space requirement
Solution Approach 1:
The invention removes the support rod entirely from the system. The freedom of movement previously provided by the support rod's length and ball joint configuration is replaced by a bracket design that inherently provides the necessary movement capability through its geometric design and direct mounting to the bogie frame
Solution Approach 2:
The invention replaces the mechanical support rod system with a bracket-based attachment system. The bracket is designed with specific geometric features and mounting configurations that provide the necessary movement freedom without requiring the mechanical extension and contraction capabilities of a support rod
3Adaptability or versatility
If the brake caliper is attached using a support rod with ball joints, then rotational movement is enabled, but the configuration becomes more complex and requires additional components
Solution Approach 1:
The invention merges the functions of the support rod, ball joints, and mounting bracket into a single integrated bracket component. The bracket directly attaches the brake caliper to the bogie frame and incorporates the necessary geometric features to enable rotational movement, eliminating the need for separate support rod and ball joint components
Solution Approach 2:
The bracket is designed as a multi-functional component that simultaneously provides structural support, enables rotational movement, and serves as the mounting interface to the bogie frame. This universal component replaces multiple specialized components (support rod, ball joints, mounting brackets) with a single element that performs all necessary functions
Data Source
Figure 1A~1B
Figure 2~2B
Figure 3(A)~3(D)
AI summary
A device for fastening a brake caliper (20) to a frame (40) of a vehicle, wherein the brake caliper (20) belongs to a brake of the vehicle, in order to brake the rotatable brake disc (60), comprises the following features: a first bolt (110) and a second bolt (120), which are both fixedly connected to the frame (40); a first holder (210) for holding the brake caliper (20) on the first bolt (110); and a second holder (220) for holding the brake caliper (20) to the second bolt (120). The combination of the first holder (210) and the second holder (220) is designed to hold the brake caliper (20) in a rotationally fixed manner in a plane (x-z) perpendicular to the axis of rotation (R1) of the brake disc (60) and to allow rotation about the at least one further axis of rotation (R2, R3), which is perpendicular to the axis of rotation (R1) of the brake disc (60), wherein the first holder (210) cannot move relative to the second holder (220).