Mechanical-electrical liquid mixing soft start stepless speed regulator

Abstract

The invention discloses a mechanical-electrical liquid mixing soft start stepless speed regulator. One end of a high-speed input shaft is connected with a rotating shaft of a main motor, and the other end thereof is connected with external teeth of a high-speed solar wheel shaft so as to form backlash flotation; the high-speed solar wheel shaft is connected with a low-speed input shaft by being meshed with a high-speed planet wheel; the other end of the low-speed input shaft is connected with a low-speed output shaft which extends out of a speed regulator box body, and is taken as an output shaft of the speed regulator to be connected with load; a high-speed planet wheel shaft is externally fixedly provided with the high-speed planet wheel which is meshed with a high-speed internal gear; the high-speed internal gear is also meshed with a high-speed gear coupling which is fixedly connected with a big bevel gear of a speed adjusting mechanism; the big bevel gear of the speed regulating mechanism is connected with a hydraulic rotating functional element by a small bevel gear shaft of the speed regulating mechanism, an intermediate gear of the speed regulating mechanism and a side gear of the speed regulating mechanism; and the tail end of the small bevel gear shaft of the speed regulating mechanism is connected with the input shaft of an auxiliary motor. The speed regulator has high transmission efficiency, low noise, reliable performance and low cost.

Description

technical field [0001] The invention relates to an electromechanical-hydraulic mixed soft-start stepless speed regulator. Background technique [0002] When the motor starts under load, it will generate a starting current of 5 to 7 times the rated current intensity. For high-power motors, the large starting current will have a great impact on the motor and the power grid; The control method of reducing the speed to zero will also bring impact to the equipment and reduce the service life. Therefore, under many working conditions, the instantaneous shutdown of high-power mechanical equipment is not allowed, and a smooth and decelerated shutdown is required; during work, changes in working conditions also need to be considered The problem of stable stepless speed regulation of high-power mechanical equipment caused by it. To solve the above technical problems, it is necessary to adopt soft start / stepless speed regulation technology for high-power equipment, so that it can real...

AI Technical Summary

Problems solved by technology

However, although the variable frequency speed control device has realized soft start, the price of the high-power variable frequency controller is extremely expensive, and the circuit and electronic components in it are difficult to maintain and the maintenance cost is high; the main problem of DC stepless speed regulation / soft start is : High-power DC motors are bulky and expensive, especially the investment in substations is often large and the system is complex

[0005] Looking at the above-mentioned various soft-start speed control devices, none of them can realize two-way stepless speed regulation and smooth transition of the output speed while keeping the speed of the main motor constant; and can make the main motor of high-power mechanical equipment start The current is less than the rated current to achieve soft start; at the same time, it has functions such as output overload torque limiting protection and multi-drive power balance; and it can also achieve simple structure, reliable performance, and low manufacturing and maintenance costs.

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