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An integrated electromechanical-hydraulic drive and energy storage integrated actuating device

An actuating device and hydraulic actuating technology, applied in the direction of electromechanical devices, circuit devices, battery circuit devices, etc., can solve the problems of larger space occupied by motors, weak carrying capacity, poor economy, etc., achieve high power density and improve load carrying capacity The effect of strong ability and applicability

Active Publication Date: 2021-06-29
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the biggest shortcoming of the existing electromechanical actuators is the weak load capacity, which is mainly used for small machines and light loads, and is difficult to be used for impact loads and heavy loads, such as the clamping force system of injection molding machines, heavy-duty lifting of excavators, etc. The lifting mechanism needs a large power, and the electromechanical actuator is not suitable. Some companies realize it by increasing the power of the servo motor, but the problem is that the motor takes up more space and costs more. In some installations, the size is limited. The occasion is not applicable, and the economy is poor

Method used

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  • An integrated electromechanical-hydraulic drive and energy storage integrated actuating device

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Embodiment 1

[0031] as attached Figure 4 Shown is an integrated electromechanical-hydraulic drive and energy storage integrated actuating device, the connection mode of the integrated electromechanical-hydraulic actuator 1 and figure 1 The same, so no more details. Electromechanical drive and energy storage system 2 includes inverter 16, smoothing capacitor 17, DC bus 18, rectifier 19, three-phase alternating current 20, DC-DC converter 21, super capacitor 22, hydraulic drive and energy storage system in 3 packages Including two-position three-way valve 23, accumulator 24, two-position two-way valve 25, first one-way valve 26, second one-way valve 27, three-position four-way valve 28, oil tank 29, asynchronous motor 30, variable hydraulic pressure Pump 31, safety valve 32.

[0032] In the electromechanical drive and energy storage system, the output of the inverter is connected to the power line, the input of the inverter is connected to the output of the rectifier through the DC bus, t...

Embodiment 2

[0036] as attached Figure 5 As shown, an integrated electromechanical-hydraulic drive and energy storage integrated actuating device is shown. The electromechanical drive and energy storage system of another embodiment is the same as that of Embodiment 1, so it will not be described in detail. In the hydraulic drive and energy storage system, the large cavity of the hydraulic cylinder is directly connected to the accumulator, and the small cavity of the hydraulic cylinder is directly connected to the fuel tank. This embodiment can be applied in machines where there is only resistive extension and overriding retraction conditions, such as excavator booms, forklifts, and the like. During the working process, pre-charge the accumulator with pre-charging pressure, the servo motor and the accumulator jointly drive the push rod of the actuator to extend, when the push rod retracts, the external kinetic energy or potential energy can be converted into hydraulic energy directly Stor...

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Abstract

An integrated electromechanical-hydraulic drive and energy storage integrated actuating device, which is characterized in that the left side of the electromechanical-hydraulic actuator is connected with an electromechanical drive and energy storage system, and the right side is connected with a hydraulic drive and energy storage system. The system, taking advantage of the advantages of high energy efficiency, high-precision control and high power density of hydraulic drive of the electromechanical actuation system, integrates the advantages of electromechanical drive and hydraulic drive, makes up for the shortcomings of the two drives, and enhances the power of the actuator / weight ratio, realizing high energy efficiency and high precision driving, solving the shortcomings of traditional electromechanical actuators that are difficult to adapt to heavy loads and shock vibrations, and adding an energy storage system to recycle the energy during the working process of the actuator .

Description

technical field [0001] The invention relates to an electromechanical-hydraulic integrated transmission device, in particular to an integrated electromechanical-hydraulic drive and energy storage integrated actuating device. Background technique [0002] With the rapid development of modern industry and equipment manufacturing industry, there are requirements for improving the energy efficiency of the actuation system. Traditional hydraulic drives have problems such as large throttling loss, serious energy waste, and poor positioning accuracy. Therefore, there are more and more energy-efficient electromechanical actuators. The actuator is an electro-mechanical actuator that integrates the servo motor and the ball screw. Its function is to convert the rotary motion of the servo motor into linear motion. Compared with the traditional hydraulic cylinder, the electromechanical actuator has transmission efficiency. High, high positioning accuracy, high reliability and safety, stab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/00H02K7/06H02K7/10H02K7/18H02J7/32H02J15/00
CPCH02J7/32H02J15/003H02K7/00H02K7/06H02K7/10H02K7/1815
Inventor 刘赫权龙葛磊王翔宇
Owner TAIYUAN UNIV OF TECH
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