Novel variable speed fluid coupling

Abstract

The invention provides a novel variable speed fluid coupling, which is characterized in that an input bearing I for supporting an input shaft is fixed in an input flange, and an input bearing II is fixed in a support seat II which is arranged on a supporting disk inner ring in the middle of a rotary shell; an embedding bearing for supporting an output shaft is fixed in a support seat I which is connected with a pump impeller inner ring, and an output bearing II is fixed in a fixed bearing house; the upper half part of the fixed bearing house is provided with a lubricating oil bore II and a lubricating oil pipe for providing lubricating oil for the output bearing II and the input bearing II; the lower half part of the fixed bearing house is provided with an oil return hole, and equipped with a fixed catheter and an oil return pipe which form an oil return passage; the input shaft is provided with a lubrication hole I which is used for providing the lubricating oil for the embedding bearing and connected with a pump impeller; the pump impeller is provided with an oil slinger, and oil supply holes are evenly distributed on the circumference of the pump impeller; an outer ring is connected with the rotary shell; an oil feed pump is driven by wheel gears on the input shaft; an oil supply valve regulates the oil mass for the pump impeller; and the oil supply valve opening is formed by comparing signals of a coupler rotational speed meter collected by a single chip computer with expected revolving speed, and is controlled by a controlling value which is calculated by a fuzzy controller.

Description

technical field [0001] The invention relates to a hydraulic transmission machine capable of steplessly adjusting the output speed, and belongs to a hydraulic stepless speed regulation device. Background technique [0002] The speed-regulating hydraulic coupling is a hydraulic transmission stepless speed-regulating machine installed between the motor and the working machine. It is a speed-regulating means vigorously popularized and applied by high-power AC constant-speed motor drive units. It has stepless adjustment technology. In the running state, the power consumption is saved; the motor can be started without load, but the load can be started and accelerated smoothly with full load; the peak torque of the motor is used to start the load, which can improve the starting ability of the motor; reduce shock and isolate torsional vibration; It can realize excellent transmission quality such as long-distance automatic control, so it is widely used in various industries of the na...

AI Technical Summary

Problems solved by technology

[0005] 1. The position of the coupler catheter and its output speed change monotonously, but there is no definite function correspondence, and there is a steady-state error;

[0006] 2. There is a large hysteresis effect between the position change of the coupling catheter and the change of the output speed, and the fluctuation of the liquid flow brings the fluctuation of the speed;

[0007] 3. There is a gap error in the inlet and return of the coupling catheter

Therefore, the current speed regulation control method is difficult to meet the requirements of more precise speed for the use of working machines.

[0008] Therefore, it is hoped that a new type of speed-regulating hydraulic coupling can be invented, which can overcome the situation of large vibration and poor lubrication of embedded bearings in existing speed-regulating hydraulic couplings, and provide a new and advanced speed-regulating and hydraulic coupling. Control Method

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