Caliper brake having spring applied, hydraulically released assembly and pressure intensifying assembly
a technology of hydraulic assembly and caliper brake, applied in the field of caliper brake, can solve the problems of low pressure hydraulic circuit, inability to meet the needs of users, and inability to use the hydraulic assembly in this manner, and achieve the effects of reducing the risk of leakage, contamination, corrosion, and reducing the overall siz
Inactive Publication Date: 2017-02-09
LAMBERT BRAKE
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- Application Information
AI Technical Summary
Benefits of technology
The solution enables reliable operation with low-pressure hydraulic circuits, minimizing leakage and corrosion, and allows for a smaller, more efficient brake design that effectively engages and disengages the rotor, overcoming previous limitations.
Problems solved by technology
However, these vehicles tend to only have low pressure hydraulic circuits available in the area of the vehicle where these caliper brake are located.
However, this is often not a viable option due to cost of materials and space constraints on the vehicle.
But hydraulic assemblies used in this manner are prone to leakage and contamination as a linkage rod thereof generally has to move in three planes.
This multi planar movement makes it difficult to effectively seal the rod which ineffective seal leads to corrosion, seal wear, and seal failures.
Method used
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Embodiment Construction
[0022]A caliper brake according to the concepts of the present invention is generally indicated by the numeral 10. Caliper brake 10 includes a housing, generally indicated by the numeral 11, that carries and protects components of brake 10 and locates it in operative relation to a conventional wheel rotor. Housing 11 includes a spring applied, hydraulically released (SAHR) assembly, generally indicated by the numeral 12, and a pressure intensifying (PI) assembly, generally indicated by the numeral 14.
[0023]SAHR assembly 12 is positioned at a piston assembly end 16 of housing 11 and includes an SAHR piston 18, a spring assembly, generally indicated by the numeral 20, and an end cap, generally indicated by the numeral 22. SAHR piston 18 is a cup-shaped piston that moves within a stepped bore, generally indicated by the numeral 24, in housing 11. Piston 18 has a body portion 26 having an outer cylindrical surface 28 that engages the maximum diameter chamber 30 in stepped bore 24. Outer...
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A caliper brake (10) is adapted to act upon a stator (40) to engage a rotor of a vehicle. A housing (11) carries both a spring applied hydraulically released piston assembly (12) and a pressure intensifying piston assembly (14). The assemblies (12, 14) are in fluid communication with each other. The assembly (12) includes a piston (18) and a spring assembly (20) which urges the piston (18) into a first position engaging the stator (40). The piston assembly (14) includes a pressure intensifying (PI) piston (64) which is in a first position when the piston (18) is in the first position. When the PI piston (64) moves from a first position to a second position, the fluid acts upon the piston (18) thereby disengaging the piston (18) from the stator (40).
Description
TECHNICAL FIELD[0001]This invention relates to a caliper brake. More particularly, this invention relates to a caliper brake that includes a spring applied, hydraulically released assembly and a pressure intensifying assembly.BACKGROUND[0002]Rough terrain vehicles, such as cranes, are known to use spring applied, hydraulically released caliper brakes as a parking brake. These caliper brakes generally require the use of hydraulic fluid to create hydraulic pressure in order to release the brake.[0003]The source of this hydraulic pressure is usually from vehicle hydraulics, since rough terrain vehicles generally include a hydraulic system. However, these vehicles tend to only have low pressure hydraulic circuits available in the area of the vehicle where these caliper brake are located.[0004]One previous solution to this problem is the use of a very large piston with low pressure behind the piston. Since the piston is large, the area that pressure acts against is large, and the piston ...
Claims
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IPC IPC(8): F16D65/18F16D55/225
CPCF16D65/18F16D2121/14F16D55/225F16D55/22655F16D59/02F16D2121/06F16D2125/10F16D2121/04F16D2125/582
Inventor DENNIS, BRIAN P.BALDEOSINGH, HOWARD H.CHANDLER, EDWARD L.
Owner LAMBERT BRAKE