Integrated Brake Device Pressure Storage and Control Unit
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Solution Overview
Problem
In elevator hoisting machines, the increased length of pipes in brake devices operated by hydraulic or pneumatic pressure leads to pressure loss and reduced responsiveness, necessitating longer operation times for compressed-fluid production apparatuses.
Innovation Solution
A brake device configuration with a pressure storage unit and a pressure control unit, featuring two inflow/outflow ports and control valves, reduces the entire path of compressed fluid, improving responsiveness by controlling the movement of a pressure-receiving piston to facilitate braking and releasing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the length of the pipe connecting pressure storage devices and control valves is increased, then the system can accommodate more components, but the pressure loss in the pipe is increased and responsiveness is reduced
Solution Approach 1:
The pressure storage unit and pressure control unit are merged into a single integrated assembly where the pressure storage chamber and control chamber share a common structure. The control valve is directly integrated into the pressure storage unit, eliminating the need for separate external piping connections. This merging reduces the overall fluid path length while maintaining all necessary functional components.
Solution Approach 2:
The brake device is segmented into distinct functional units (pressure storage unit with first chamber and second chamber, pressure control unit with control valve) that are closely integrated. This segmentation allows each component to be optimized for its specific function while maintaining compact overall dimensions and minimal fluid path lengths between components.
2Ease of operation
If the length of the pipe is increased, then components can be connected, but the time required for increasing pressure in the brake cylinder is increased
Solution Approach 1:
The pressure storage unit and pressure control unit are merged into a single integrated assembly where the pressure storage chamber and control chamber share a common structure. The control valve is directly integrated into the pressure storage unit, eliminating the need for separate external piping connections. This merging reduces the overall fluid path length while maintaining all necessary functional components.
Solution Approach 2:
The pressure storage unit pre-stores compressed fluid in both the first pressure storage chamber and second pressure storage chamber at ready-to-use pressures. This preliminary preparation of pressurized fluid allows the brake cylinder to be rapidly pressurized when the control valve opens, eliminating delays associated with fluid transmission through long pipes.
3Loss of energy
If the length of the pipe is decreased, then pressure loss is reduced, but the pipe between the operation machine and the valve cannot be shortened
Solution Approach 1:
The pressure storage unit and pressure control unit are merged into a single integrated assembly where the pressure storage chamber and control chamber share a common structure. The control valve is directly integrated into the pressure storage unit, eliminating the need for separate external piping connections. This merging reduces the overall fluid path length while maintaining all necessary functional components.
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 responsiveness of the brake device, reduces the volume of compressed fluid, and decreases the operation time of the compressed-fluid production apparatus.
Implementation Method 1
a pressure-receiving piston (2) mounted to the rod (1) in a cylinder tube (8, 9) arranged adjacent to the pressure storage container (7)
Implementation Method 2
a spring device (6) configured to press the pressure-receiving piston (2) in a direction in which the lining (5) is pressed against the disc (4)
Implementation Method 3
a first control valve (18) configured to control opening and closing of the first inflow/outflow port (15, 16), and a second control valve (19) configured to control opening and closing of the second inflow/outflow port (16, 17)
Data Source
AI summary
In a brake device configured to perform braking and releasing of a disc by moving a rod having a lining at a leading end of the rod by a spring device, a cylinder tube of a pressure control unit is arranged adjacent to a pressure storage unit configured to store a compressed fluid. When the disc is to be released, a pressure-receiving piston is moved to a releasing position. When the disc is to be braked, the pressure-receiving piston is returned to braking position.