KR19980011066U - Control device to prevent shock during REACH operation - Google Patents
Control device to prevent shock during REACH operation Download PDFInfo
- Publication number
- KR19980011066U KR19980011066U KR2019960024557U KR19960024557U KR19980011066U KR 19980011066 U KR19980011066 U KR 19980011066U KR 2019960024557 U KR2019960024557 U KR 2019960024557U KR 19960024557 U KR19960024557 U KR 19960024557U KR 19980011066 U KR19980011066 U KR 19980011066U
- Authority
- KR
- South Korea
- Prior art keywords
- reach
- control device
- motor
- low potential
- switch
- Prior art date
Links
- 230000035939 shock Effects 0.000 title abstract description 8
- 101100166839 Arabidopsis thaliana CESA1 gene Proteins 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 238000013021 overheating Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/24—Electrical devices or systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/08—Masts; Guides; Chains
- B66F9/082—Masts; Guides; Chains inclinable
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
본 고안은 전동지게차의 리치(REACH)형 트럭에 관한 것으로, 특히 리치 동작의 완료시점을 감지하여 자동으로 리치속도를 감소시키도록 한 리치 동작시 충격방지를 위한 제어장치에 관한 것으로, 본 고안은 리치스위치(RSW1: Reach SW1)가 온될 때 저전위신호가 제어장치에 입력되어 파워 트랜지스터(Q1)에 저전위 구동펄스를 인가시켜 모터의 출력을 증가시키고, 마스트가 스위치(SW1)를 동작시켜 온될 때 저전위신호가 상기 제어장치에 입력되어 상기 파워 트랜지스터(Q1)에 저전위 구동펄스를 인가시켜 모터의 출력을 감소시키도록 구성된 것으로서, 본 고안은 스위치를 장착하고 리치상태를 감지하여 자동으로 펌프모터의 속도를 제어함으로써 불필요한 동작으로 인해 나타날 수 있는 소음과 충격으로 인한 화물의 낙하, 작업자의 피로도 증가, 모터의 과열 및 밧데리의 소모를 방지할 수 있는 효과가 있다.The present invention relates to a reach (REACH) type truck of the electric forklift, and more particularly to a control device for preventing shock during reach operation to reduce the reach speed automatically by detecting the completion time of the reach operation, When the reach switch RSW1 is turned on, a low potential signal is input to the control device to apply a low potential driving pulse to the power transistor Q1 to increase the output of the motor, and the mast is operated by operating the switch SW1. When the low potential signal is input to the control device is configured to reduce the output of the motor by applying a low potential drive pulse to the power transistor (Q1), the present invention is equipped with a switch and automatically detects the rich state pump By controlling the speed of the motor, drops of cargo due to noise and shock that may be caused by unnecessary motion, increased fatigue of workers, and overheating of the motor It has the effect of preventing the consumption of the battery.
Description
제1도의 (a)는 본 고안 리치형 트럭의 개략도.(A) of FIG. 1 is a schematic diagram of the present invention reach type truck.
(b)는 본 고안 리치형 트럭의 제어장치 설치도.(b) is a control device installation of the present design reach type truck.
제2도는 본 고안 리치 동작시 충격방지를 위한 제어장치 회로도.2 is a control circuit diagram for preventing shock during the inventive design operation.
제3도는 제2도에 대한 모터의 특성 파형도.3 is a characteristic waveform diagram of a motor relative to FIG.
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
10 : 밧데리20 : 제어장치10: battery 20: control device
30 : 모터F : 휴즈30: Motor F: Fuse
Q1 : 파워 트랜지스터SW1 : 스위치Q1: power transistor SW1: switch
RSW1 : 리치스위치RSW1: Reach Switch
본 발명은 전동지게차의 리치(REACH)형 트럭에 관한 것으로, 특히 리치 동작의 완료시점을 감지하여 자동으로 리치속도를 감소시키도록 한 리치 동작시 충격방지를 위한 제어방법에 관한 것이다.The present invention relates to a reach (REACH) type truck of the electric forklift, and more particularly to a control method for preventing shock during reach operation to automatically reduce the reach speed by detecting the completion time of the reach operation.
일반적으로 전동지게차의 리치형 트럭은 먼저 틸트실린더를 작동시켜 작업장치대를 약간 상승시킨 상태에서 화물을 적제할 장소까지 운행하고, 상기 화물이 적제할 장소에 도달되면 차체부분을 일단 정지시키고 상기 틸트실린더를 작동시켜 작업장치대를 수직되게 조작한 상태에서 운반대의 조작으로 화물을 적제하여, 이후 상기 틸트실린더를 작동시켜 상기 운반대가 상승한 상태에서 약간의 기울기를 갖게 하여 안전되게 이동시키는 작업을 반복함으로써 작업이 완료되는데, 이때 리치트럭은 리치레버를 완전히 당기고 또는 밀고 있는 상태에서 리치동작이 끝날 때 심한 충격이 발생되고, 전기적으로 조작상태에서 리치실린더의 급작스런 정지로 인해 펌프모터는 순간적인 과부하 상태에 있게 된다.In general, the reach type truck of an electric forklift truck first operates a tilt cylinder to move to a place where cargo is to be loaded with the work platform slightly raised, and when the cargo reaches a place to load, the body part is stopped once and the tilt cylinder is The operation is carried out by loading the cargo by operating the pallet in the state where the work bench is operated vertically by operating the tilter, and then repeating the operation of safely moving the tilt cylinder to have a slight inclination in the elevated state of the pallet. At this point, the reach truck is severely impacted at the end of the reach motion with the reach lever fully pulled or pushed, and the pump motor is momentarily overloaded due to a sudden stop of the reach cylinder in an electrically operated state. .
이와같이 종래의 전동지게차의 리치형 트럭에 있어서는 차량전체에 심한 충격이 가해져 부하를 떨어뜨릴 수 있으며, 반복되는 충격과 소음으로 인해 내구성 저하 및 운전자의 피로도를 상승시키며, 과전류가 펌프모터에 유입되어 모터가 과열되고 아울러 밧데리의 사용시간 단축으로 인해 불필요한 전력낭비가 발생되는 문제점이 있었다.As described above, in the reach type truck of a conventional electric forklift truck, a heavy shock is applied to the entire vehicle to reduce the load, and durability and driver fatigue are increased due to repeated shock and noise, and an overcurrent flows into the pump motor so that the motor Overheated and unnecessary power wasted due to the shortened battery life.
따라서, 본 고안의 목적은 리치형 트럭의 레그(LEG) 끝단 안쪽빔에 스위치를 장착하고 리치상태를 감지하여 펌프모터의 속도를 제어하도록 한 리치 동작시 충격방지를 위한 제어장치를 제공함에 있는 것으로, 이를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.Accordingly, an object of the present invention is to provide a control device for impact prevention during reach operation in which a switch is mounted on an inside beam of a leg end of a reach type truck and a reach state is detected to control the speed of the pump motor. This will be described in detail with reference to the accompanying drawings.
제1도는 본 고안 리치형 트럭의 구조도 및 설치도로서, 이에 도시된 바와 같이 리치형 트럭 레그 끝단(끝단에서 300mm 정도의 위치) 안쪽빔에 리미트 스위치, 마이크로 스위치, 근접 스위치 등의 스위치를 장착한 상태를 나타내고 있다.FIG. 1 is a structural diagram and installation diagram of the present invention reach type truck, and as shown therein, a switch such as a limit switch, a micro switch, a proximity switch, etc. is mounted on an inner beam of the reach type truck leg end (about 300 mm from the end). One state is shown.
제2도는 본 고안 리치 동작시 충격방지를 위한 제어장치 회로도로서, 이에 도시된 바와 같이 리치스위치(RSW1: Reach SW1)가 온될 때 저전위신호가 제어장치(20)에 입력되어 파워 트랜지스터(Q1)에 저전위 구동펄스를 인가시켜 모터(30)의 출력을 증가시키고, 마스트가 스위치(SW1)를 동작시켜 온될 때 저전위신호가 상기 제어장치(20)에 입력되어 상기 파워 트랜지스터(Q1)에 저전위 구동펄스를 인가시켜 상기 모터(30)의 출력을 감소시키도록 구성된 것으로 이의 작용 및 효과를 제3도를 참조하여 상세히 설명하면 다음과 같다.FIG. 2 is a circuit diagram of a control device for preventing an impact during a rich operation of the present invention. As shown in FIG. 2, when the reach switch RSW1 is turned on, a low potential signal is input to the control device 20 to power the power transistor Q1. A low potential drive pulse is applied to the motor 30 to increase the output of the motor 30, and when the mast is turned on by operating the switch SW1, a low potential signal is inputted to the control device 20 to low the power transistor Q1. It is configured to reduce the output of the motor 30 by applying a potential driving pulse, the operation and effects thereof will be described in detail with reference to FIG.
리치레버가 작동되면 작동유는 제어장치(20)의 제어밸브를 통해 흐를 수 있도록 유로가 형성되는데, 이때 리치스위치(RSW1)는 온되어 신호가 하이에서 로우로 되어 제어장치(20)에 입력되고 이에 따라 상기 제어장치(20)는 파워 트랜지스터(Q1)에 구동펄스를 인가하여 도통시킨다.When the rich lever is operated, the hydraulic oil is formed to flow through the control valve of the control device 20. At this time, the rich switch RSW1 is turned on so that the signal goes from high to low and is input to the control device 20. Accordingly, the control device 20 applies a driving pulse to the power transistor Q1 to conduct it.
또한, 상기 파워 트랜지스터(Q1)가 도통됨에 따라 제3도의 A점의 특성을 가지고 회전하는데, 이때 유량은 상기 제어장치(20)의 제어밸브에서 조정할 수 있고 모터(30)는 계속 A점의 특성으로 회전한다.In addition, as the power transistor Q1 is turned on, it rotates with the characteristic of point A of FIG. 3, wherein the flow rate can be adjusted in the control valve of the control device 20, and the motor 30 continues to have the characteristic of the point A. Rotate
한편, 상기 리치의 기능이 수행되는 동안 전동지게차의 마스트가 스위치(SW1)를 동작시켜 상기 스위치(SW1)가 온될 때 그 스위치(SW1)의 신호는 하이에서 로우로 되어 제어장치에 입력되는데, 이때 상기 제어장치는 상기 파워 트랜지스터(Q1)에 인가되는 펄스의 듀티(DUTY)를 미리 세팅된 값으로 감소시켜 모터를 제3도의 B점의 특성으로 회전하여 모터의 출력을 감소시킨다.On the other hand, when the mast of the electric forklift operates the switch SW1 while the reach function is being performed, when the switch SW1 is turned on, the signal of the switch SW1 goes from high to low and is input to the control device. The controller reduces the duty DUTY of the pulses applied to the power transistor Q1 to a preset value to rotate the motor with the characteristic of point B in FIG. 3 to reduce the output of the motor.
이상에서 상세히 설명한 바와 같이 본 고안은 스위치를 장착하고 리치상태를 감지하여 자동으로 펌프모터의 속도를 제어함으로써 불필요한 동작으로 인해 나타날 수 있는 소음과 충격으로 인한 화물의 낙하, 작업자의 피로도 증가, 모터의 과열 및 밧데리의 소모를 방지할 수 있는 효과가 있다.As described in detail above, the present invention is equipped with a switch and senses the rich state to automatically control the speed of the pump motor, dropping cargo due to noise and shock that may occur due to unnecessary operation, increased fatigue of workers, motor There is an effect to prevent overheating and the consumption of the battery.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960024557U KR19980011066U (en) | 1996-08-16 | 1996-08-16 | Control device to prevent shock during REACH operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960024557U KR19980011066U (en) | 1996-08-16 | 1996-08-16 | Control device to prevent shock during REACH operation |
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| Publication Number | Publication Date |
|---|---|
| KR19980011066U true KR19980011066U (en) | 1998-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960024557U KR19980011066U (en) | 1996-08-16 | 1996-08-16 | Control device to prevent shock during REACH operation |
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| KR (1) | KR19980011066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100747267B1 (en) * | 2005-12-12 | 2007-08-07 | 현대자동차주식회사 | Method for reducing noise of high voltage power relay |
-
1996
- 1996-08-16 KR KR2019960024557U patent/KR19980011066U/en active IP Right Grant
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100747267B1 (en) * | 2005-12-12 | 2007-08-07 | 현대자동차주식회사 | Method for reducing noise of high voltage power relay |
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