Segmented Brake Housing for Rotary Device Maintenance
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Solution Overview
Problem
The existing braking devices for rotary devices in work machines, such as excavators and cranes, require partial or complete dismantling for maintenance due to brake element wear, which is labor-intensive and inefficient.
Innovation Solution
A braking device with a two-part brake housing that separates from the rotary device, allowing for external access and maintenance without disassembling the rotary device, featuring brake elements attached to separate housing parts and a mechanism to easily engage and disengage the brake using hydraulic fluid or an electromagnetic actuator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the braking device is integrated into the rotary device with brake elements attached directly to the rotor and stator, then the braking function is effectively provided, but maintenance requires partial or complete disassembly of the rotary mechanism which is labor-intensive and time-consuming
Solution Approach 1:
The braking device is segmented from the rotary device into a separate brake housing assembly. The brake housing with brake elements can be independently removed and maintained without disassembling the rotary mechanism, while still providing effective braking function through the separation of the braking subsystem from the main rotating assembly.
Solution Approach 2:
The braking device is extracted from the integrated rotary mechanism and placed in a separate brake housing. This extraction allows the brake elements to be accessed, removed, and replaced independently from the rotor and stator assembly, eliminating the need for partial or complete disassembly of the rotary device for brake maintenance.
2Loss of time
If the braking device is provided as a separate brake housing external to the rotary device, then maintenance can be performed without disassembling the rotary mechanism, but the overall system structure becomes more complex
Solution Approach 1:
The system is segmented into two independent modules: the rotary device and the brake housing. This segmentation allows maintenance personnel to access and service the brake elements by simply removing the brake housing without interfering with the rotary mechanism, significantly reducing maintenance time and operational disruption.
Solution Approach 2:
The braking function is extracted into a separate brake housing that can be independently maintained. This extraction eliminates the time loss associated with disassembling the rotary mechanism for brake maintenance, as the brake housing can be serviced in isolation while the rotary device remains operational or is minimally affected.
3Object-affected harmful factors
If the brake housing completely surrounds the rotary device, then the rotary device is protected from external influences and contamination, but access to fluid connections and maintenance becomes more difficult
Solution Approach 1:
The brake housing is segmented with strategic openings and access points that allow fluid connections to be reached and maintenance to be performed without completely dismantling the housing. These segmented access points maintain the protective enclosure while enabling operational accessibility for servicing and fluid management.
Solution Approach 2:
Fluid connections and maintenance access points are extracted as separate accessible features on the brake housing. This allows the housing to maintain its protective surrounding structure while providing dedicated access paths for fluid connections and maintenance activities without requiring complete disassembly of the enclosing 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
Enables easier maintenance and retrofitting of existing rotary devices with a braking system, reducing operational effort and ensuring unhindered rotor movement while providing a robust braking mechanism.
Implementation Method 1
the braking device can be released against the spring force of a spring element. The spring force of the spring element thus causes the braking device to be actively engaged.
Implementation Method 2
Such a means for releasing the braking device could, for example, be a piston pressurized with hydraulic fluid.
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a braking device for a rotary device of a working machine, in particular an excavator or crane, with a boom arm and a working tool rotatably mounted on the boom arm, wherein the rotary device has a stator that can be connected non-rotatably to the boom arm and a rotor that can be rotated about an axis of rotation with respect to the stator, which can be connected non-rotatably to the working tool and can be rotated relative to the stator by an automatic, preferably fluidic, in particular hydraulic, drive, and wherein the braking device comprises a braking device acting between the rotor and the stator, wherein the braking device comprises a two-part brake housing designed to receive the rotor and the stator, with a first housing part and a second housing part.wherein the first housing part can be connected to the stator and the second housing part to the rotor in a rotationally fixed manner, and wherein the braking device is effective between the first housing part and the second housing part. Furthermore, the invention relates to a system with such a braking device and a rotary device for a machine.