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A hydraulic-electric hybrid power system based on a magnetic screw

A technology of hybrid power system and magnetic screw rod, which is applied in the field of excavator power, can solve the problems that excavators cannot achieve high efficiency and energy saving, and achieve the effect of high safety and easy integration

Active Publication Date: 2021-12-31
RES INST OF ZHEJIANG UNIV TAIZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a hydraulic-electric hybrid power system based on a magnetic screw rod to realize the hybrid drive mode under heavy load or harsh working conditions, and to solve the problem that the hybrid excavator cannot achieve high efficiency and energy saving

Method used

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  • A hydraulic-electric hybrid power system based on a magnetic screw

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Embodiment

[0031] Embodiment: a kind of hydraulic-electric hybrid power system based on magnetic screw rod, such as figure 1 As shown, it includes a hydraulic cylinder and a motor 2, wherein the hydraulic cylinder includes a cylinder body 1 and a piston rod, and the hydraulic oil in the cylinder body 1 can push the piston rod to move axially.

[0032] The piston rod is covered with a mover permanent magnet 5 to form a magnetic screw rod mover 3, and the magnetic screw rod mover 3 is covered with a stainless steel tube (not shown in the figure), and the stainless steel tube is used to protect and reinforce the mover permanent magnet. magnet 5. The magnetic screw mover 3 is covered with a magnetic screw rotor 4, and the magnetic screw rotor 4 includes a rotor shell and a rotor permanent magnet 6 fixedly arranged on the inner wall of the rotor shell.

[0033] In the above structure, the magnetic screw rotor 4 is rotatably arranged on the end of the cylinder body 1 close to the piston rod t...

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Abstract

The invention discloses a hydraulic-electric hybrid power system based on a magnetic screw rod, which includes a hydraulic cylinder and an electric motor; the hydraulic cylinder includes a cylinder body and a piston rod; the piston rod is covered with a mover permanent magnet and is defined as a magnetic force A screw mover, the permanent magnet of the mover is in a spiral shape; a magnetic screw rotor is rotatably sleeved outside the magnetic screw mover, and the magnetic screw rotor includes a rotor permanent magnet, and the rotor permanent magnet It is in a spiral shape; the motor is used to drive the permanent magnet of the rotor to rotate. On the one hand, the present invention improves the driving efficiency through the hydraulic-electric hybrid driving method, and on the other hand improves the efficiency of energy saving and recovery.

Description

technical field [0001] The invention relates to the technical field of excavator power, in particular to a hydraulic-electric hybrid power system based on a magnetic screw rod. Background technique [0002] China is a large infrastructure country, and excavators are widely used. The energy efficiency of excavators is directly related to energy utilization and environmental protection. Therefore, research on energy conservation of excavators has always been the focus of industrial research. [0003] Traditional hydraulic cylinder excavators use potential energy recovery to improve energy-saving efficiency. If potential energy recovery is not used, the potential energy will be reduced during the falling process of the excavator arm and the weight in the bucket will be converted into oil in the hydraulic cylinder. Specifically, during the descent of the weight in the bucket, in order to control the descending speed, the hydraulic cylinder must generate a force opposite to the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/06E02F9/20E02F3/42
CPCH02K7/06E02F9/2075E02F3/42
Inventor 张丽慧夏永明方攸同卢琴芬颜文俊郑军袁国堂
Owner RES INST OF ZHEJIANG UNIV TAIZHOU