Liquid-viscosity loading system

Abstract

The invention relates to a liquid-viscosity loading system which is suitable for applying load moment to the rotating shafts rotating at various speed. The liquid-viscosity loading system mainly comprises a hydraulic control system and a liquid-viscosity loading device which is connected with the hydraulic control system. The hydraulic control system comprises an electric motor, an double pump, an electrohydraulic proportional overflow valve, an electromagnetic reversing valve, a filter, a pressure detecting element, a pressure gauge, a lubricating oil tank and the like. The liquid-viscosity loading device comprises an inputting shaft, a piston, an external friction plate, an internal friction plate, a resetting spring, a shell, an end over, a sealing cover, a sealing assembly and the like. The power is transmitted by using the viscosity of the lubricating oil film between the friction plates or the shearing force, the load moment is regulated by changing the thickness of the lubricating oil film, a lubricating oil passageway is formed in such a way that the electric motor drives the double pump to be connected with the liquid-viscosity loading device, and the lubricating oil pressure and the load moment are controlled through the electromagnetic reversing valve, the electrohydraulic proportional overflow valve and the like. The liquid-viscosity loading system has the advantages of simple structure, steady loading, long service life, convenient operation and good effect.

Description

technical field [0001] The invention relates to a loading system, in particular to a liquid viscous loading system suitable for applying load moments on rotating shafts at various rotational speeds. Background technique [0002] Commonly used torque loading methods mainly include: mechanical loading, hydraulic loading, hydraulic loading, electric loading, hydraulic dynamometer loading, etc. The main characteristics are as follows: [0003] (1) Mechanical loading: Among many mechanical loading methods, the advantages of disc brakes are the most obvious. Disc loading is through the friction between the brake disc and the disc brake lining, so as to obtain the corresponding braking torque. The advantages of disc loading are: compact structure, low cost, mature technology, and easy implementation; the main disadvantages are: ①The brake disc has poor heat dissipation performance; question. [0004] (2) Hydraulic loading: Hydraulic loading is to take throttling or overflow meas...

AI Technical Summary

Problems solved by technology

The advantages of disc loading are: compact structure, low cost, mature technology, and easy implementation; the main disadvantages are: ①The brake disc has poor heat dissipation performance; question

The main disadvantages of the hydraulic braking system are: ①This braking method has good low-speed performance, but still needs a set of mechanical brakes to stop; ②The heat energy converted from hydraulic energy needs to be cooled by a separate cooling system; ③There are many control valves , the hydraulic system is complex and difficult to operate and maintain

The main disadvantages of the hydraulic brake system are: ① When the speed drops, the braking torque drops sharply. When it drops to 1 / 3 of the working speed, the brake basically fails, and a mechanical brake is required to stop the brake, which will cause mechanical shock and damage. The brake lining is worn; ②When braking, the energy absorbed by the transmission medium is converted into heat, which requires a cooling system, and it is not suitable to use hard water in the underground; It takes a long time to start the process; ④The operation and maintenance of the brake system are difficult

[0008] The above loading methods all have the disadvantages of unstable loading, short service life, inconvenient operation, and complex structure, so it is necessary to improve them

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