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Electro-hydraulic hybrid driving mine lifting device and control method thereof

A hybrid drive, hydraulic control valve technology, applied in elevators, transportation and packaging, sustainable buildings, etc., can solve the problems affecting the stable operation of the power grid, immature technology, and large power grid impact, and achieve improved safety and reliability and mature technology. , the effect of improving the service life

Active Publication Date: 2014-11-05
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hydraulic-electric hybrid driven mine hoist and its control method, which is used to solve the problem that the existing mine hoist uses power feeding to the power grid for energy saving, which has a large impact on the power grid and affects the stable operation of the power grid; Flywheel battery energy storage, the technology is still immature, completely dependent on the safety protection of the gate control system after the power supply system fails, low reliability and high cost technical problems

Method used

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  • Electro-hydraulic hybrid driving mine lifting device and control method thereof
  • Electro-hydraulic hybrid driving mine lifting device and control method thereof
  • Electro-hydraulic hybrid driving mine lifting device and control method thereof

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specific Embodiment approach 1

[0037] as attached figure 1 As shown, a mine hoist or winch that implements a hydraulic-electric hybrid drive according to the present invention includes a cage 1, a drum 2, a reducer 3, a torque sensor 4, a speed sensor 5, a hoisting motor 6, and a cascade type High-voltage frequency converter 7, phase-shifting transformer 8, gate control system 23, clutch 9, first hydraulic pump / motor 10, hydraulic control valve 11, hydraulic accumulator group 12, first safety valve 13, step-down transformer 14. Low-voltage inverter 15, step-up transformer 16, energy storage motor / generator 17, second hydraulic pump / motor 18, two-position three-way control valve 19, low-voltage inverter 20, energy storage motor / generator controller 21 , DC voltage sensor 22, the second safety valve 24, wherein:

[0038] The primary side of the phase-shifting transformer 8 is connected to the high-voltage AC power grid, and the secondary side of the phase-shifting transformer 8 is divided into three groups. ...

specific Embodiment approach 2

[0042] as attached figure 2As shown, Embodiment 2 is similar to Embodiment 1 in terms of working principle and structure. The difference is that the step-up transformer 16 and the low-voltage inverter 20 are eliminated, and the output end of the low-voltage frequency converter 15 is directly connected to the energy storage electric / The input end of motor 17 is connected, that is, when the power of the hoist is small, the function of feeding power to the AC grid may not be used.

specific Embodiment approach 3

[0043] as attached image 3 As shown, Embodiment 3 is similar to Embodiment 1 in terms of working principle and structure, except that the energy storage electric motor / engine 17, the second hydraulic pump / motor 18, the two-position three-way control valve 19, and the low-voltage inverter are removed. 20 and energy storage motor / generator controller 21, retaining the independent feed unit composed of step-down transformer 14, step-up transformer 16, and low-voltage frequency converter 15; when the capacity of hydraulic accumulator group 12 is overloaded during operation, The lowering speed and deceleration process of the hoist can be controlled by feeding power to the high-voltage AC grid.

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Abstract

The invention provides an electro-hydraulic hybrid driving mine lifting device and a control method thereof. A lifting motor is connected with a first hydraulic pump / motor through a clutch, the input end of the lifting motor is connected with a primary winding of a step-down transformer, the primary winding of the step-down transformer is connected with the output end of a cascade type high voltage frequency converter, a secondary winding of the step-down transformer is connected with the input end of a low voltage frequency converter, and an independent feeding unit is formed by connecting a boosting transformer and a high voltage alternating current power grid. The control method includes: part of energy is stored through an energy accumulator and fed to save energy during uplink, downlink and brake of a lifting machine and a winch. The electro-hydraulic hybrid driving mine lifting device and the control method of the electro-hydraulic hybrid driving mine lifting device improve braking and decelerating performance of the motor and shorten braking time of the motor. Compared with an electro-hydraulic hybrid driving mine lifting device adopting a super capacitor and a flywheel battery, the electro-hydraulic hybrid driving mine lifting device adopts the hydraulic energy accumulator to store energy and is mature in technology, reliable in operation and long in service life.

Description

technical field [0001] The invention relates to a hydraulic-electric hybrid drive mine hoist and its method, in particular to a method of storing the potential energy of the mine hoist and the drawworks under the weight and the kinetic energy of deceleration and braking by using electro-hydraulic energy storage. The utility model relates to a control device and a control method for hoisting heavy objects by a winch and regenerating the energy during the acceleration process. Background technique [0002] Mine hoists and hoisting winches are key transportation equipment in mine production, and are often called the throat of mines. They undertake important responsibilities such as transporting ore, materials and personnel, and can be used for lifting and transporting shafts and inclined shafts. In addition to lifting heavy objects from the mine to the well, the hoist and winch often have to lower some equipment from the mine to the underground. With the continuous expansion of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B1/32B66B1/34B66B5/02F15B1/04
CPCY02E60/15Y02B50/00Y02E60/16
Inventor 权龙黄家海杜兰松李斌
Owner TAIYUAN UNIV OF TECH
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