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Mechanical electric liquid composite soft starting/stepless speed regulating transmission device for large power overloading equipment

A technology of stepless speed regulation and transmission device, which is applied in the direction of transmission device, gear transmission device, transmission device control, etc., and can solve the problems of large investment, high price and high maintenance cost of substations

Inactive Publication Date: 2009-07-08
李本平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 repair, and the maintenance cost is high; the main problem of DC stepless speed regulation / soft start is: large The power DC motor is bulky and expensive, especially the investment in the substation 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.

Method used

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  • Mechanical electric liquid composite soft starting/stepless speed regulating transmission device for large power overloading equipment
  • Mechanical electric liquid composite soft starting/stepless speed regulating transmission device for large power overloading equipment

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Embodiment Construction

[0022] see figure 1 and figure 2 , the present invention includes a body 1 and a planetary carrier output shaft 6 fixed on the inner wall of the body 1 and the inner wall of the large end cover 39 by using rolling bearings 4 and 38. The inner sliding sleeve of the planetary carrier output shaft 6 has a power input shaft 32, and the power input shaft One end of 32 is fixed in the body 1 by a rolling bearing 75 and stretches out of the body 1 to be connected with the rotating shaft of the main motor, and the other end is fixed on the inner hole of the planet carrier output shaft 6 by a rolling bearing 76 . One end of the power input shaft 32 fixed to the inner hole of the planet carrier output shaft 6 is provided with an involute spline inner tooth, and the involute spline inner tooth is connected to one end of the sun gear shaft 30 located in the inner hole of the planet carrier output shaft 6 . The teeth are connected to form a backlash float. A block 31 for axially positio...

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PUM

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Abstract

The invention relates to a mechanical-electrical-hydraulic compound soft-starting / stepless speed regulating drive mechanism on high-power heavy-duty equipment. The mechanism comprises a power input shaft sleeved on a planet carrier output shaft in a sliding manner. One end of the power input shaft is connected with a main electric motor, and the other end thereof is fixed in an inner hole of the planet carrier output shaft and is connected with a sun wheel shaft positioned in the inner hole of the planet carrier output shaft so as to form gear clearance float; at least two groups of planet wheels are fixed around the planet carrier output shaft through planet wheel shafts at one circle in a winding manner; each planet wheel is meshed with the sun wheel shaft peripherally, and is meshed with an inner ring gear positioned outside the planet carrier output shaft at the same time; a gear coupling which is connected with the inner ring gear along the gear direction to form radial gear clearance float is also included; a bevel gear fixed on the gear coupling is meshed with a conical tooth shaft connected with a low-power helper motor; and a bevel gear shaft for connecting the bevel gear and a hydraulic rotation function element are also arranged on the gear coupling at the same time. The mechanical-electrical-hydraulic compound soft-starting / stepless speed regulating drive mechanism integrates the functions such as soft-starting / stepless speed regulating, etc., and has the advantages of high transmission efficiency, small noise, compact structure, reliable performance and low cost.

Description

technical field [0001] The invention relates to an electromechanical-hydraulic composite soft start / stepless speed regulation transmission device for high-power heavy-duty equipment. 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 regula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P1/26F16H3/74F16H61/00
Inventor 王伏林龚晓和李达彭翼阳芳南肖建群
Owner 李本平
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