Dump Truck Brake Disk Segmented Mounting Legs
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Solution Overview
Problem
The existing traveling drive devices for dump trucks face issues with the durability of the disk holding cylinder and brake disk due to high loads during braking, and the workability and weight of the brake disk mounting system, which affects the vehicle's cargo capacity and assemblability.
Innovation Solution
The configuration includes a disk holding cylinder with circumferentially arranged disk mounting legs and U-shaped projections on the brake disk, allowing for increased load distribution and ease of mounting, along with a friction pad abutting ring and arc-shaped portions for enhanced strength and stress distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the brake disk is mounted to the disk holding cylinder by fitting together disk mounting legs and projections, then the brake device can be maintained without removing the wheel, but the durability of the disk holding cylinder or brake disk is reduced due to large loads during braking
Solution Approach 1:
The brake disk mounting structure is segmented into multiple disk mounting legs (typically three or more) distributed circumferentially around the disk holding cylinder. This segmentation distributes the large braking loads across multiple attachment points, reducing the stress concentration on any single fitting portion between the disk mounting leg and the brake disk projection, thereby improving durability while maintaining ease of maintenance.
2Strength
If many bolts are used to directly mount the brake disk to the disk holding cylinder, then the durability is improved, but the workability for mounting and demounting the brake disk is remarkably reduced
Solution Approach 1:
Instead of using numerous bolts distributed across the entire brake disk, the mounting structure is segmented into a few (typically three) disk mounting legs. Each leg provides a localized fitting connection between the disk holding cylinder and brake disk, significantly reducing the number of fastening operations required while still distributing the load adequately to maintain durability.
Solution Approach 2:
The invention extracts the essential mounting function from a comprehensive bolted connection system and implements it through simplified fitting connections between disk mounting legs and brake disk projections. This extraction removes unnecessary complexity and fastening steps while retaining the core load-bearing capability, thereby improving workability without sacrificing durability.
3Stability of the object's composition
If the disk holding cylinder is axially extended up to the brake disk surface, then the mounting stability is improved, but the weight of the disk holding cylinder increases, reducing vehicle cargo capacity
Solution Approach 1:
The disk holding cylinder structure is segmented with discrete disk mounting legs extending axially to support the brake disk, rather than extending the entire cylinder body. This segmentation provides localized support where needed for mounting stability while avoiding unnecessary material in other areas, thereby minimizing weight increase and preserving vehicle cargo capacity.
Solution Approach 2:
The disk holding cylinder is designed with local quality enhancement only where required - the disk mounting legs are extended axially at specific circumferential positions to provide stable brake disk mounting. The main body of the cylinder remains compact without unnecessary axial extension, optimizing the strength-to-weight ratio and minimizing impact on vehicle cargo capacity while ensuring mounting stability.
4Stability of the object's composition
If the disk holding cylinder is axially extended, then the mounting stability is improved, but the assemblability is remarkably reduced due to increased weight of the clamp member exceeding 20 kg
Solution Approach 1:
The clamp member and disk holding cylinder structure are segmented into smaller, more manageable components. The disk mounting legs are separated as distinct elements that can be attached to the cylinder body, and the brake disk clamp function is divided into multiple attachment points. This segmentation reduces the weight of individual components, making them easier to handle and assemble without requiring excessive lifting capacity, thereby improving assemblability while maintaining mounting stability.
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 enhances the durability of the disk holding cylinder and brake disk, improves workability during mounting and demounting, and reduces the vehicle's weight, thereby increasing cargo capacity and commercial value.
Implementation Method 1
a brake device for applying braking to the aforementioned wheel mounting tube by pressing a friction pad against the brake disk
Data Source
AI summary
A traveling drive device for a dump truck is provided with an axle housing mounted to a vehicle body, a wheel mounting tube rotatably provided on the outer periphery side of the axle housing, a disk holding cylinder provided on the axial outside of the wheel mounting tube, a brake disk mounted to the disk holding cylinder, and a brake device for applying braking to the brake disk. The disk holding cylinder is configured by a cylindrical body to be mounted to the wheel mounting tube and a plurality of disk mounting legs provided on the cylindrical body. A plurality of U-shaped projections are provided on the outer periphery side of the brake disk at positions corresponding to the respective disk mounting legs. A recessed groove which fits on the disk mounting leg so as to hold a distal end thereof is provided in each of the U-shaped projections.