Hydraulic brake

Abstract

The invention relates to a hydraulic brake which is fit for the brake of a high-speed hydraulic motor. The hydraulic brake essentially consists of a casing, a principal axis arranged in the casing, a piston which is sleeved at the principal axis, a driving friction plate, a driven friction plate, a left end cover and a right end cover. An axis center at an end of the principal axis matching with the hydraulic motor is provided with a blind hole. The principal axis is provided with a plurality of pores which are communicated with the blind hole of the axis center. The right sides of the driving friction plate and the driven friction plate are provided with a friction plate baffle, and the left sides are provided with an oil cylinder piston. The outer end of the oil cylinder piston is provided with the left end cover which is sleeved at the principal axis and is fixed with the casing. A deep groove ball bearing is arranged between an axle sleeve of the left end cover and the principal axis. A disc type spring is arranged between the oil cylinder piston and the axle sleeve of the left end cover. The outer end of the friction plate baffle is provided with the right end cover which is sleeved at the principal axis and is fixed with the casing. A tapper rolling bearing is arranged between the right end cover sleeved at the principal axis and the principal axis. The hydraulic brake has compact structure, small size, low cost, wide speed adjusting, strong commonality, good brake effect, convenient installation, simple operation and convenient maintenance and does not require manual operation.

Description

technical field [0001] The invention relates to a brake, in particular to a hydraulic brake suitable for high-speed hydraulic motor driving conditions. Background technique [0002] The brakes used in the hydraulic automatic tensioning device of the belt conveyor mainly include outsourcing block brakes and hydraulic motor brakes. Outsourcing block brakes are generally produced by springs to generate braking force, and the brakes are released by cylinders or oil cylinders. Since the start and stop of the motor side is controlled by electricity, its response speed is faster, while the brake side is controlled by the oil cylinder. Due to the structure of the outsourcing block brake, the stroke of the oil cylinder is larger and the pipeline is longer. The braking response speed is always lagging behind, so when the motor starts, it is very easy to cause the motor to burn out due to stalling, or when the motor stops, the brake cannot be braked in time due to the lag of the brake,...

AI Technical Summary

Problems solved by technology

However, the domestically produced hydraulic motor brakes can only be used for braking under low-speed working conditions, and the brakes are attached to the body of the low-speed hydraulic motor in the form of parts, that is, the structure of the hydraulic motor and the brake is integrated, which is a non-independent structure. Large size, heavy weight, high cost, small speed range, cannot be used alone

There are brakes for high-speed hydraulic motors in foreign countries, but the connection between the output shaft and external equipment is over-positioned, which may easily cause damage to the shaft and bearings. The fluidity of the lubricating oil of the friction plates and bearings, disc spring preload and friction are not considered. The friction of the sheet cannot be adjusted, the structure is complex and not compact, the volume is large, and the cost is high, so it is difficult to meet the domestic market demand

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