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Safety control system and method for drill jambo power unit

A power unit, safety control technology, applied in the control system, motor speed or torque control, motor control and other directions, can solve the problems of motor damage, reduce the service life of the motor and power grid, etc., to achieve small inrush current and improve life , the effect of reducing costs

Pending Publication Date: 2020-10-16
ATLAS COPCO (NANJING) CONSTR & MINING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem: In view of the problem in the prior art that the power unit of the rock drilling rig is likely to cause damage to the motor and reduce the service life of the motor and the power grid, the present invention provides a safety control system and control method for the power unit of the rock drilling rig. The soft start control technology is used to improve the life of the motor and the impact of the inrush current on the power grid; at the same time, it can monitor the state of the motor in real time and give a real-time warning to improve system security; further, the present invention can control dual motors and reduce costs

Method used

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  • Safety control system and method for drill jambo power unit
  • Safety control system and method for drill jambo power unit
  • Safety control system and method for drill jambo power unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] In this embodiment, the motor unit includes a main motor 81, the incoming line end of the main motor 81 is connected with the outgoing line end of the switching contactor 403 and the outgoing line end of the bypass contactor 405, the main electric machine 81 is provided with a first motor monitoring unit, the second A motor monitoring unit includes: a first speed sensor 811 , a first coupling temperature sensor 812 , a first stator winding temperature sensor 813 , and a first rotor winding sensor 814 .

[0067]Wherein the first rotational speed sensor 811 is connected with MCU 5 through the signal line, is used for detecting main motor speed, and sends to MCU; The first joint temperature sensor 812 is connected with MCU 5 through signal line, is used for detecting main motor coupling The temperature of the coupling is sent to the MCU 5; the first coupling temperature sensor 812 is connected to the MCU 5 through a signal line for detecting the temperature of the motor cou...

Embodiment 2

[0069] In this embodiment, the motor unit includes a water pump motor 82, the inlet end of the water pump motor 82 is connected to the outlet end of the switching contactor 403 and the outlet end of the bypass contactor 405, and the first motor monitoring unit is arranged in the water pump motor 82, Corresponding sensors are arranged on corresponding components of the water pump motor 82 for monitoring whether the water pump motor 82 is abnormal.

Embodiment 3

[0071] In this embodiment, the motor unit includes a main motor 81 and a water pump motor 82. The main motor 81 is provided with a first motor monitoring unit, and the water pump motor 82 is provided with a second motor monitoring unit. The first motor monitoring unit includes: a first rotating speed Sensor 811 , first coupling temperature sensor 812 , first stator winding temperature sensor 813 , first rotor winding sensor 814 . Wherein the first rotational speed sensor 811 is connected with MCU 5 through the signal line, is used for detecting main motor speed, and sends to MCU5; The first coupling temperature sensor 812 is connected with MCU 5 through signal line, is used for detecting main motor shaft coupling The temperature of the coupling is sent to the MCU 5; the first coupling temperature sensor 812 is connected to the MCU 5 through a signal line to detect the temperature of the main motor coupling and is sent to the MCU 5; the first stator winding temperature sensor 81...

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Abstract

The invention discloses a safety control system and method for a drill jambo power unit, and belongs to the technical field of drill jambo control. The system comprises a cable drum, a slip ring box,a motor unit, a power inlet protection unit, a soft start control unit, an MCU, a CAN bus and a human-computer interface. A power supply cable is connected with the wire inlet end of the slip ring boxthrough a cable drum; the wire outlet end of the slip ring box is connected with the motor unit through the power inlet protection unit and the soft start control unit in sequence, the MCU is connected with the slip ring box, the power inlet protection unit and the motor unit, the MCU is connected with the soft start control unit and the human-computer interface through a CAN bus, and a motor monitoring unit is arranged in the motor unit. Impact-free soft start of the motor can be realized, the service life of the motor is prolonged, and impact of current on a power grid is avoided; the safety of the system is improved by monitoring the states of different parts and giving an alarm in real time.

Description

technical field [0001] The invention belongs to the technical field of rock drilling jumbo control, and in particular relates to a safety control system and a control method for a power unit of a rock drilling jumbo. Background technique [0002] Rock drilling jumbo (also known as drilling jumbo) is a kind of rock drilling equipment used in tunnel and underground engineering by drilling and blasting. It can move and support multiple rock drilling machines to perform drilling operations at the same time. Since the working environment of the rock drilling rig is relatively harsh, the requirements for each component of the rock drilling rig are relatively high. As a key component of a rock drilling rig, the power unit is of great value and requires high enough reliability to meet the needs of the rock drilling rig under complex working conditions. [0003] At present, the power unit of rock drilling rigs mainly uses electric motors, and the motors used in rock drilling rigs ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P5/00H02P1/58H02P1/02H02P1/16H02P29/00H02H7/08E21B7/02F04B49/02F04B49/10
CPCE21B7/02E21B7/022F04B49/02F04B49/10H02H7/0822H02P1/022H02P1/16H02P1/58H02P5/00H02P29/00
Inventor 高达
Owner ATLAS COPCO (NANJING) CONSTR & MINING EQUIP CO LTD
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