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KR960022242A - Plugging Braking System of Electric Forklift - Google Patents

Plugging Braking System of Electric Forklift
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Publication number
KR960022242A
KR960022242AKR1019940036038AKR19940036038AKR960022242AKR 960022242 AKR960022242 AKR 960022242AKR 1019940036038 AKR1019940036038 AKR 1019940036038AKR 19940036038 AKR19940036038 AKR 19940036038AKR 960022242 AKR960022242 AKR 960022242A
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South Korea
Prior art keywords
plugging
driving
signal
driving transistor
reference voltage
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KR1019940036038A
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Korean (ko)
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KR0123207B1 (en
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안길원
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석진철
대우중공업 주식회사
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Abstract

Translated fromKorean

본 발명은 전동지게차의 플러깅 제동장치에 관한 것으로, 주행모터(2)로부터 검출된 플러깅 신호를 반전시켜 출력하는 플러깅 신호 일력처리부(110)와; 상기 플러깅 신호 입력처리부(110)에서 출력된 플러깅 신호를 입력 받아 플러깅 명령신호를 출력하는 한편, 주행트랜지스터(TRI) 제어신호 및 PWM신호를 출력하는 마이크로프로세서(120) 및; 상기 플러깅 명령신호가 “로우”인 상태(정상주행시)에서는 전류센서(4)로부터 입력된 모터 구동 전류값이 모터 구동 기준전압보다 크면 주행트랜지스터(TR1)를 차단하고, 상기 플러깅 명령 신호가 “하이”인 상태(플러깅 제동시)에서는 입력된 모터 구동 전류값이 플러깅 기준전압보다 크면 주행트랜지스터(TR1)를 차단하는 한편, 정상주행시와 플러깅 제동시에 전류센서(4)로부터 각각 입력된 모터 구동 전류값이 모터 구동 기준전압과 플러깅 기준전압 보다 각각 작을 경우에는 상기 마이크로프로세서(120)로부터 출력된 주행트랜지스터 제어신호 및 PWM신호에 따라 주행트랜지스터(TR1) 제어하는 주행트랜지스터 제어부(130)를 포함하여 구성되어, 플러깅할 때의 과전류와 정상주행 상태의 과전류를 기준값으로 유지할 수 있으므로 회로 구성이 간단하여 경제적일 뿐만 아니라 조작자의 요구에 유연하게 대처할 수 있는 것이다.The present invention relates to a plugging braking device for an electric forklift, comprising: a plugging signal power processing unit (110) for inverting and outputting a plugging signal detected from a traveling motor (2); A microprocessor (120) for receiving a plugging signal output from the plugging signal input processing unit (110) and outputting a plugging command signal, and outputting a driving transistor (TRI) control signal and a PWM signal; In the state in which the plugging command signal is “low” (when driving normally), when the motor driving current value input from the current sensor 4 is greater than the motor driving reference voltage, the driving transistor TR1 is cut off, and the plugging command signal is “high”. In the plugging braking state, the driving transistor TR1 is cut off when the input motor driving current value is larger than the plugging reference voltage, and the motor driving current value input from the current sensor 4 during normal driving and plugging braking, respectively. When the motor driving reference voltage and the plugging reference voltage are smaller than each, the driving transistor control unit 130 controls the driving transistor TR1 according to the driving transistor control signal and the PWM signal output from the microprocessor 120. The circuit configuration is simple because the overcurrent when plugging and the overcurrent in the normal driving state can be maintained as a reference value. It is not only economical but also flexible to the operator's needs.

Description

Translated fromKorean
전동지게차의 플러깅 제동장치Plugging Braking System of Electric Forklift

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 따른 전동지게 차 제어장치의 개략적인 구성도,1 is a schematic configuration diagram of an electric forklift controller according to the present invention,

제2도는 본 발명에 따른 제1도의 플러깅 제어부의 상세 회로도,2 is a detailed circuit diagram of the plugging controller of FIG. 1 according to the present invention;

제4도는 본 발명에 따른 전동지게 차의 플러깅 제동장치의 동작 흐름도이다.4 is an operation flowchart of a plugging braking apparatus for an electric forklift truck according to the present invention.

Claims (2)

Translated fromKorean
상기 주행모터(2)로부터 검출된 플러깅 신호를 반전시켜 출력하는 플러깅 신호 입력처리부(110)와; 상기플러깅 신호 입력처리부(110)에서 출력된 플러깅 신호를 입력받아 플러깅 명령신호를 출력하는 한편, 주행트랜지스터(TR1) 제어신호 및 PWM 신호를 출력하는 마이크로프로세서(120) 및; 상기 플러깅 명령신호가 “로우”인 상태(정상주행시)에서는 전류센서(4)로부터 입력된 모터 구동 전류값이 모터 구동 기준전압보다 크면 주행트랜지스터(TR1)를 차단하고, 상기 플러깅 명령신호가 "하이"인 상태(플러깅 제동시)에서는 입력된 모터 구동 전류값이 플러깅 기준전압보다 크면 주행트랜지스터(TR1)를 차단하는 한편, 정상주행시와 플러깅 제동시에 전류센서(4)로부터 각각 입력된 모터 구동 전류값이 모터 구동 기준전압과 플러깅 기준전압 보다 각각 작을경우에는 상기 마이크로프로세서(120)로부터 출력된 주행트랜스터 제어신호 및 PWM신호에 따라 주행트랜지스터(TR1) 제어하는 주행트랜지스터 제어부(130)를 포함하여 구성된 것을 특징으로 하는 전동지게차의 플러깅 제동장치.A plugging signal input processor 110 for inverting and outputting a plugging signal detected by the driving motor 2; A microprocessor (120) for receiving a plugging signal output from the plugging signal input processor (110) and outputting a plugging command signal, and outputting a driving transistor (TR1) control signal and a PWM signal; In the state in which the plugging command signal is "low" (in normal driving), when the motor driving current value input from the current sensor 4 is greater than the motor driving reference voltage, the driving transistor TR1 is cut off, and the plugging command signal is "high". In the "in" state (plugging braking), if the input motor driving current value is larger than the plugging reference voltage, the driving transistor TR1 is cut off, and the motor driving current value input from the current sensor 4 during normal driving and plugging braking, respectively. When the motor driving reference voltage and the plugging reference voltage are smaller than each, the driving transistor control unit 130 controls the driving transistor TR1 according to the driving transistor control signal and the PWM signal output from the microprocessor 120. Plugging braking device of an electric forklift.제1항에 있어서, 상기 주행트랜지스터 제어부(130)의 플러깅 기준전압은 운전자가 임의로 조작할 수 있도록 된 것을 특징으로 하는 전동지게 차의 플러깅 제동장치.The plugging braking apparatus of claim 1, wherein the plugging reference voltage of the driving transistor control unit 130 can be arbitrarily manipulated by a driver.※ 참고사항:최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940036038A1994-12-221994-12-22A device and a method of controlling plugging brake in battery fork lift truckExpired - Fee RelatedKR0123207B1 (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
KR1019940036038AKR0123207B1 (en)1994-12-221994-12-22A device and a method of controlling plugging brake in battery fork lift truck

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
KR1019940036038AKR0123207B1 (en)1994-12-221994-12-22A device and a method of controlling plugging brake in battery fork lift truck

Publications (2)

Publication NumberPublication Date
KR960022242Atrue KR960022242A (en)1996-07-18
KR0123207B1 KR0123207B1 (en)1997-11-19

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ID=19402952

Family Applications (1)

Application NumberTitlePriority DateFiling Date
KR1019940036038AExpired - Fee RelatedKR0123207B1 (en)1994-12-221994-12-22A device and a method of controlling plugging brake in battery fork lift truck

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KR (1)KR0123207B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
KR100350433B1 (en)*1999-10-142002-08-28대우종합기계 주식회사Auto plugging method for electric lift truck and apparatus using thereof
KR100592532B1 (en)*1999-10-142006-06-23두산인프라코어 주식회사 Automatic control of plugging distance of electric forklift
KR101034084B1 (en)*2008-12-052011-05-13현대자동차주식회사 Secondary Burnout Prevention Device and Prevention Method of Hybrid Vehicle

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Publication numberPublication date
KR0123207B1 (en)1997-11-19

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