KR20090010151A - Overload protection apparatus - Google Patents

Overload protection apparatus Download PDF

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Publication number
KR20090010151A
KR20090010151A KR1020080133260A KR20080133260A KR20090010151A KR 20090010151 A KR20090010151 A KR 20090010151A KR 1020080133260 A KR1020080133260 A KR 1020080133260A KR 20080133260 A KR20080133260 A KR 20080133260A KR 20090010151 A KR20090010151 A KR 20090010151A
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KR
South Korea
Prior art keywords
sprocket
housing
long groove
load cell
spring
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KR1020080133260A
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Korean (ko)
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KR100902554B1 (en
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박대동
박인호
류충기
방동석
박완식
장천수
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주식회사삼영이앤티
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Priority to KR1020080133260A priority Critical patent/KR100902554B1/en
Publication of KR20090010151A publication Critical patent/KR20090010151A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
    • H02P3/26—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by combined electrical and mechanical braking

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Transmission Devices (AREA)

Abstract

An overload prevention device is provided to prevent the malfunction and breakdown of a driving device, and to have no necessity of replacing a shear pin cut by an overload by excluding the use of a shear pin. An overload prevention device comprises a speed reducer(10) generating power, a cylindrical housing(20) stepped and provided with a long groove at one side, a toothed wheel type sprocket(30) provided with a through hole at one side, a disk type end cover(40) coupled with the housing to prevent the separation of the sprocket, a sensor(50) composed of a steel ball(51) inserted to the long groove of the housing, a spring(52) inserted to the through hole of the sprocket and a load cell(53) sensing the displacement of the spring, and a slip ring(60) transferring the displacement value to the outside without the line distortion of the load cell.

Description

과부하 방지장치 { OVERLOAD PROTECTION APPARATUS }Overload Protector {OVERLOAD PROTECTION APPARATUS}

본 발명은 과부하 방지장치에 관한 것으로, 더욱 상세히 설명하면, 감속기에 설치되어 과부하가 발생되면 강구가 스프링을 밀어 스프링에 압축력이 발생하게 되며, 이 압축력을 로드셀로 실시간으로 감지하여 감속기를 자동으로 멈추도록 하여 구동장치의 오작동 및 고장을 미연에 방지할 수 있도록 한 과부하 방지장치에 관한 것이다.The present invention relates to an overload prevention device, and in more detail, when an overload occurs, the steel ball pushes the spring to generate a compressive force, and the compressive force is automatically detected by a load cell in real time to stop the reducer automatically. The present invention relates to an overload preventing device that can prevent malfunction and failure of a driving device in advance.

일반적으로, 과부하 방지장치라 함은, 동력전달 장치가 손상되지 않고 동작할 수 있는 최대정격 정력, 전압, 전류 및 동작 온도범위 이하에서 이루어지게 만들어 전력, 전압, 전류에서 소자가 파괴되지 않게 전력을 끊어주는 장치를 말하는 것이다.Generally, overload protection means that the power train does not damage the device at power, voltage, or current by making it below the maximum rated power, voltage, current, and operating temperature ranges that can operate without damage. It's a device to cut off.

이러한 과부하 방지장치가 적용된 구동장치는 스프라켓과 하우징의 내부에 시어핀이 장착되어 구동장치의 회전과 스프라켓의 회전이 등속이 아니거나, 스프라 켓에 과부하가 발생되면, 시어핀이 파손되면서 스프라켓이 자유회전을 하도록 하여 구동장치의 오작동과 고장을 방지하도록 하였다.The driving device to which the overload protection device is applied is equipped with a shear pin inside the sprocket and the housing. If the rotation of the driving device and the rotation of the sprocket are not constant, or if the sprocket is overloaded, the shear pin is broken and the sprocket is broken. Free rotation is used to prevent malfunction and failure of the drive system.

이러한 시어핀이 내재된 구동장치의 내부구조를 도시한 도면이 도 1에 잘 도시된바, 이를 살펴보면, 스프라켓샤프트(1)의 플랜지부에 안전수단인 시어핀(2)을 매개로 스프라켓(3)이 결합되어 있고, 상기 스프라켓(3)은 구동모터(M)의 구동력을 상기 스프라켓샤프트(1)로 전달시켜 구동부(4)를 작동시키는 스크랩 컨베이어에 있어서, 전방에 일정 간격으로 신호돌기(5a)가 돌출 형성된 신호공급용 더그(5)를 상기 스프라켓샤프트(1)에 일체로 결합 고정시키는 한편, 상기 신호공급용 더그(5) 아래에 일정 간격을 두고 회전감지용 근접스위치(6)를 설치하여, 상기 시어핀(2)이 파손되면 상기 신호공급용 더그(5)의 회전 상태가 정지되면서 상기 회전감지용 근접스위치(6)에 의해 상기 구동부(4)가 중단되도록 구성된다.1 is a diagram illustrating an internal structure of a drive device having a sheer pin embedded therein. Referring to the drawing, the sprocket 3 is connected to the flange portion of the sprocket shaft 1 through a sheer pin 2 that is a safety means. ) Is coupled, the sprocket 3 is a scrap conveyor for driving the drive unit 4 by transmitting the driving force of the drive motor (M) to the sprocket shaft (1), the signal projection (5a) at a predetermined interval in front ) Is integrally fixed to the sprocket shaft (1) to the signal supply dog (5) protruded, while the rotation detection proximity switch (6) is installed at regular intervals below the signal supply dog (5). When the shear pin 2 is broken, the driving unit 4 is stopped by the rotation detecting proximity switch 6 while the rotation state of the signal supply dog 5 is stopped.

상기와 같이 구성된 종래의 시어핀이 내재된 구동장치는 과부하가 발생될 경우에는 시어핀이 파손됨으로써 이를 새로 갈아 끼우는 교체작업이 대단히 불편하고 그 교체시간도 많이 요구되었으며, 상기 시어핀이 파손된 상태에서 근접스위치가 정상적으로 작동되지 않을 경우에는 구동모터가 계속적으로 구동되면서 상기 시어핀의 파손 유무를 작업자가 확인하지 못할 수도 있기 때문에, 작업자가 조금만 부주의하게 관리할 경우 더 큰 고장으로 이어지는 문제점을 내포하고 있었다.The drive device incorporating the conventional shear pins configured as described above is very inconvenient to replace the new replacement pins because the shear pins are broken when the overload occurs, and the replacement time is also required a lot, and the shear pins are broken. If the proximity switch does not operate normally, the driving motor is continuously driven, and thus the operator may not be able to check whether the shear pin is damaged. there was.

이에 본 발명은 상기와 같은 문제점을 감안하여 발명한 것으로, 동력을 발생시키는 감속기(10)와; 상기 감속기(10)의 회전축에 설치되되, 일측으로는 장홈(21)이 구비된 단차진 원통 형태의 하우징(20)과; 상기 하우징(20)에 설치되되, 일측으로는 통공(31)이 구비된 톱니바퀴형태의 스프라켓(30)과; 상기 하우징(20)과 결합되어 스프라켓(30)의 이탈을 방지하도록 원판형태로 구성된 엔드커버(40)와; 상기 하우징(20)의 장홈(21)에 내설되는 강구(51)와 스프라켓(30)의 통공(31)에 내설되는 스프링(52) 및 스프링(52)의 변위를 감지하는 로드셀(53)로 구성된 감지수단(50)과; 상기 엔드커버(40)의 중앙에 설치되어 로드셀(53)의 선이 꼬임 없이 외부로 변위 값이 전달되도록 하는 슬립링(60)으로 구성되어 과부하의 발생 여부를 실시간으로 감지하여 즉각적으로 대응할 수 있도록 한 특징이 있다.Accordingly, the present invention has been invented in view of the above problems, and a reducer 10 for generating power; A housing 20 having a stepped cylindrical shape which is installed on a rotation shaft of the reducer 10 and has a long groove 21 on one side thereof; Sprocket 30 is installed in the housing 20, one side of the toothed sprocket having a through-hole 31; An end cover 40 coupled to the housing 20 and configured in a disc shape to prevent the sprocket 30 from being separated; It consists of a steel ball 51 which is installed in the long groove 21 of the housing 20, a spring 52 installed in the through hole 31 of the sprocket 30 and a load cell 53 for detecting the displacement of the spring 52. Sensing means 50; It is installed in the center of the end cover 40 is composed of a slip ring 60 so that the displacement value is transmitted to the outside without twisting the line of the load cell 53 so as to detect the occurrence of overload in real time to respond immediately There is one characteristic.

상기와 같이 구성된 본 발명은 과부하가 발생되면 강구 장홈의 경사면을 따라 이동됨으로써 스프링에 압축력이 발생하게 되며, 이 압축력을 로드셀로 실시간으로 감지하여 감속기를 자동으로 멈추도록 하여 구동장치의 오작동 및 고장을 미연에 방지할 수 있는 효과가 있다.According to the present invention configured as described above, when an overload occurs, a compressive force is generated in the spring by moving along the inclined surface of the steel ball long groove. There is an effect that can be prevented in advance.

또한, 기존에 주로 사용되던 시어핀을 사용하지 않음으로써 과부하에 의해 절단된 시어핀을 교체장착할 필요가 없어 그에 따른 시간 손실을 줄일 수 있을 뿐만 아니라, 비용절감에도 유익한 효과가 있다.In addition, it is not necessary to replace and replace the shear pin cut by overload by not using the shear pin, which is mainly used in the past, as well as to reduce the time loss accordingly, there is a beneficial effect on cost reduction.

본 발명은 과부하 방지장치에 관한 것으로, 감속기에 설치되어 과부하가 발생되면 강구가 스프링을 밀어 스프링에 압축력이 발생하게 되며, 이 압축력을 로드셀로 실시간으로 감지하여 감속기를 자동으로 멈추도록 하여 구동장치의 오작동 및 고장을 미연에 방지할 수 있도록 한 특징이 있다.The present invention relates to an overload prevention device, and when the overload occurs, the steel ball pushes the spring to generate a compressive force, and the compressive force is sensed by the load cell in real time to stop the reducer automatically. There is a feature to prevent malfunction and failure in advance.

이하 본 발명의 실시 예를 예시도면을 통해 살펴보면 다음과 같다.An embodiment of the present invention will be described below with reference to the accompanying drawings.

도 2는 본 발명의 정면도를 나타낸 것이고, 도 3은 본 발명의 요부 확대도를 나타낸 것이며, 도 4는 본 발명의 측면도를 나타낸 것이고, 도 5는 본 발명의 작동 상태 평단면도를 나타낸 것으로 도시한 바와 같이, 본 발명은 감속기(10)와 하우징(20), 스프라켓(30), 엔드커버(40), 감지수단(50) 및 슬립링(60)의 여섯 부분으로 구성된다.Figure 2 shows a front view of the present invention, Figure 3 shows an enlarged view of the main part of the present invention, Figure 4 shows a side view of the present invention, Figure 5 shows the operational state plan cross-sectional view of the present invention. As described above, the present invention is composed of six parts of the reducer 10 and the housing 20, the sprocket 30, the end cover 40, the sensing means 50 and the slip ring 60.

우선, 감속기(10)는 전기를 이용하여 동력을 발생시키는 장치로, 통상적으로 사용되는 감속기를 그대로 차용하여 사용하도록 하며, 전기적인 신호가 인가되면 회전운동을 시작하여 모든 부품들을 작동시키도록 한다.First, the speed reducer 10 is a device that generates power using electricity, and uses a speed reducer that is commonly used as it is, and when an electric signal is applied, it starts a rotational movement to operate all the parts.

한편, 상기 감속기(10)의 회전축에 설치되는 하우징(20)의 구성을 살펴보면, 하우징(20)은 단차진 원통 형태로 구성되며, 감속기(10)의 회전축에 키로 고정되어 회전축의 회전방향과 동일한 방향으로 회전하도록 구성된다.On the other hand, looking at the configuration of the housing 20 is installed on the rotary shaft of the reducer 10, the housing 20 is configured in a stepped cylindrical shape, is fixed to the rotary shaft of the reducer 10 is the same as the rotation direction of the rotary shaft And to rotate in a direction.

상기 하우징(20) 또한 통상 사용되는 하우징과 유사한 형태로 구성되나, 종래 사용되는 하우징과 가장 큰 차이점은 하우징(20)의 단차부 일측에 장홈(21)이 형성되되, 장홈(21)의 바닥면이 오목한 형태로 구성된 것이 특징이다.The housing 20 is also configured in a similar form to a commonly used housing, but the biggest difference from the conventionally used housing is that the long groove 21 is formed on one side of the step portion of the housing 20, the bottom surface of the long groove 21 It is characterized by being configured in this concave shape.

다시 말해, 장홈(21)의 바닥면의 중앙은 낮고 양측 가장자리로 향할수록 점진적으로 높아지는 형태로 제작되어, 후술하는 강구(51)가 장홈(21)의 경사면을 따라 이동함에 따라 강구(51)의 후방에 결합된 스프링(52)에 압축력이 발생하도록 구성된다.In other words, the center of the bottom surface of the long groove 21 is produced in the form of a lower and gradually higher toward both edges, the steel ball 51 to be described later moves along the inclined surface of the long groove 21 of the steel ball 51 It is configured to generate a compressive force on the spring 52 coupled to the rear.

그리고 상기 하우징(20)에 설치되는 스프라켓(30)의 구성을 살펴보면, 스프 라켓(30)은 톱니바퀴형태로 형성되어 스프라켓(30)에 설치되는 체인(미도시)을 회전시키도록 하는 역할을 한다.And looking at the configuration of the sprocket 30 is installed in the housing 20, the sprocket 30 is formed in the form of a cog wheel serves to rotate the chain (not shown) installed in the sprocket 30. .

상기 스프라켓(30)은 통상의 스프라켓(30)과 동일한 형태로 구성되는바, 스프라켓(30)의 일측으로는 통공(31)이 형성되어 있어, 종래에 시어핀이 내재되는 대신에 그 내부로 후술하는 스프링(52)이 내재되도록 구성된다.The sprocket 30 is configured in the same form as a conventional sprocket 30, the one side of the sprocket 30 is formed with a through hole 31, instead of having a shea pin in the prior art it will be described later inside The spring 52 is configured to be embedded.

또한, 상기 스프라켓(30)의 후방에 설치되는 엔드커버(40)의 구성을 살펴보면, 원판 형태로 형성되어, 스프라켓(30)의 이탈을 방지하도록 구성된다.In addition, looking at the configuration of the end cover 40 is installed in the rear of the sprocket 30, it is formed in the shape of a disc, it is configured to prevent the departure of the sprocket 30.

상기 엔드커버(40)는 하우징(20)과 결합되어, 스프라켓(30)을 막아주는 형태로 설치되며, 엔드커버(40)의 중앙으로는 후술하는 슬립링(60)이 설치되는 구성을 갖는다.The end cover 40 is coupled to the housing 20 to block the sprocket 30 and has a configuration in which a slip ring 60 to be described later is installed at the center of the end cover 40.

한편, 상기 하우징(20)과 스프라켓(30)에 설치되어 과부하가 발생하는지 여부를 감지하는 감지수단(50)의 구성을 살펴보면, 강구(51)와 스프링(52) 및 로드셀(53)로 구성되는바, 강구(51)는 하우징(20)의 장홈(21) 내에 삽설되고, 스프링(52)은 스프라켓(30)의 통공(31)에 삽설되며, 로드셀(53)은 스프라켓(30)의 통공(31) 끝단에 설치된다.On the other hand, looking at the configuration of the sensing means 50 is installed in the housing 20 and the sprocket 30 to detect whether an overload occurs, it is composed of a steel ball 51 and the spring 52 and the load cell 53 Bars and steel balls 51 are inserted into the long groove 21 of the housing 20, the spring 52 is inserted into the through hole 31 of the sprocket 30, the load cell 53 is a through hole of the sprocket 30 31) It is installed at the end.

상기와 같이 설치된 강구(51)와 스프링(52) 및 로드셀(53)은, 과부하가 발생됨에 따라 강구(51)가 장홈(21)의 바닥면을 타고 이동하게 되면, 그와 결합된 스프링(52)에는 압축력이 발생하게 되며, 그 힘을 로드셀(53)이 감지하여 과부하 발생 여부를 감지하는 구성을 갖는다.When the steel ball 51 and the spring 52 and the load cell 53 installed as described above, the steel ball 51 is moved on the bottom surface of the long groove 21 as the overload occurs, the spring 52 coupled thereto ), The compression force is generated, and the load cell 53 detects the force to detect whether or not an overload occurs.

마지막으로 상기 엔드커버(40)의 중앙에 설치되는 슬립링(60)의 구성을 살펴보면, 통상적으로 사용되는 슬립링과 유사한바, 상기 로드셀(53)의 선을 슬립링(60)의 외주부와 연결하여 로드셀(53)이 회전하더라도 로드셀(53)의 선이 꼬이지 않고, 슬립링(60)을 통해 지속적으로 로드셀(53)의 신호를 외부의 제어장치(미도시)로 전달해 주도록 구성된다.Finally, when the configuration of the slip ring 60 is installed in the center of the end cover 40, it is similar to the conventional slip ring, the line of the load cell 53 is connected to the outer peripheral portion of the slip ring 60 Thus, even if the load cell 53 rotates, the wire of the load cell 53 is not twisted, and is configured to continuously transmit a signal of the load cell 53 to an external control device (not shown) through the slip ring 60.

상기와 같이 구성된 본 발명의 조립과정을 살펴보면, 우선, 감속기(10)의 회전축에 하우징(20)을 키를 이용하여 설치하고, 설치된 하우징(20)에 스프라켓(30)을 엔드커버(40)를 이용하여 설치한다.Looking at the assembly process of the present invention configured as described above, first, the housing 20 is installed on the rotating shaft of the reducer 10 by using a key, the sprocket 30 is installed on the housing 20, the end cover 40 Install using

그런 다음, 하우징(20)의 장홈(21)에 강구(51)를 삽입하고, 스프라켓(30)의 통공(31)에 스프링(52)을 삽입하며, 통공(31)의 끝 부분에는 로드셀(53)을 설치한다.Then, the steel ball 51 is inserted into the long groove 21 of the housing 20, the spring 52 is inserted into the through hole 31 of the sprocket 30, the load cell 53 at the end of the through hole 31 Install).

그 후, 엔드커버(40)의 중앙에 슬립링(60)을 설치하여 로드셀(53)의 전선과 슬립링(60)을 연결함으로써 본 발명의 설치를 완료한다.Thereafter, the slip ring 60 is installed at the center of the end cover 40 to connect the wire and the slip ring 60 of the load cell 53 to complete the installation of the present invention.

상기와 같이 조립된 본 발명의 작동과정을 살펴보면, 우선 감속기(10)에 전원을 인가하면 감속기(10)의 회전축이 회전하게 되며, 그에 따라 회전축에 결합된 하우징(20)과 스프라켓(30)이 회전하게 되어, 스프라켓(30)에 설치된 체인(미도시) 에 의해 외부에 동력을 전달하는 형태로 작동한다.Looking at the operating process of the present invention assembled as described above, first, when the power is applied to the reducer 10, the rotating shaft of the reducer 10 is rotated, accordingly the housing 20 and the sprocket 30 coupled to the rotating shaft Is rotated, it operates in the form of transmitting power to the outside by a chain (not shown) installed in the sprocket 30.

상기와 같이 작동되는 중에 과부하가 발생하게 되면, 감속기(10)와 결합된 하우징(20)은 계속 회전하려고 하지만, 과부하에 의해 스프라켓(30)은 정지하고자 하는 힘이 발생하게 되면, 하우징(20)의 장홈(21) 내에 삽입된 강구(51)가 장홈(21)의 경사면을 따라서 이동하게 된다.When the overload occurs during the operation as described above, the housing 20 coupled to the reducer 10 tries to continue to rotate, but when the sprocket 30 generates a force to stop due to the overload, the housing 20 Steel ball 51 inserted into the long groove 21 of the is moved along the inclined surface of the long groove 21.

상기와 같이 강구(51)가 경사면을 따라서 이동하게 되면 스프라켓(30)의 통공(31) 내에 위치한 스프링(52)이 압축되게 되며, 이러한 압축력은 스프링(52)의 끝 부분에 설치된 로드셀(53)에 의해 그 변위된 값을 슬립링(60)을 거쳐 외부의 제어장치(미도시)로 보냄으로써 과부하 발생여부를 실시간으로 감지할 수 있도록 하며, 과부하기 발생되면 제어장치를 통해 감속기(10)의 구동을 정지시키도록 하는 전체적인 작동과정을 갖는다.As described above, when the steel ball 51 moves along the inclined surface, the spring 52 located in the through hole 31 of the sprocket 30 is compressed, and the compression force is the load cell 53 installed at the end of the spring 52. By sending the displaced value to the external control device (not shown) through the slip ring 60 to detect whether the overload occurs in real time, and if the overloader is generated through the control device of the reducer 10 It has a whole process of operation to stop the drive.

도 1은 종래 과부하 방지장치의 단면도1 is a cross-sectional view of a conventional overload protection device

도 2는 본 발명의 정면도2 is a front view of the present invention

도 3은 본 발명의 요부 확대도3 is an enlarged view of main parts of the present invention;

도 4는 본 발명의 측면도4 is a side view of the present invention

도 5는 본 발명의 작동상태 평단면도Figure 5 is a plan sectional view of the operating state of the present invention

[도면의 주요부분에 대한 부호의 설명][Explanation of symbols on the main parts of the drawings]

10: 감속기 20: 하우징10: reducer 20: housing

21: 장홈 30: 스프라켓21: long groove 30: sprocket

31: 통공 40: 엔드커버31: through hole 40: end cover

50: 감지수단 51: 강구50: detection means 51: steel ball

52: 스프링 53: 로드셀52: spring 53: load cell

60: 슬립링60: slip ring

Claims (2)

과부하 방지장치에 있어서,In the overload protection device, 동력을 발생시키는 감속기(10)와;A reducer 10 generating power; 상기 감속기(10)의 회전축에 설치되되, 일측으로는 장홈(21)이 구비된 단차진 원통 형태의 하우징(20)과;A housing 20 having a stepped cylindrical shape which is installed on a rotation shaft of the reducer 10 and has a long groove 21 on one side thereof; 상기 하우징(20)에 설치되되, 일측으로는 통공(31)이 구비된 톱니바퀴형태의 스프라켓(30)과;Sprocket 30 is installed in the housing 20, one side of the toothed sprocket having a through-hole 31; 하우징(20)과 결합되어 스프라켓(30)의 이탈을 방지하도록 원판형태로 구성된 엔드커버(40)와;An end cover 40 coupled to the housing 20 and configured in a disc shape to prevent the sprocket 30 from being separated; 상기 하우징(20)의 장홈(21)에 내설되는 강구(51)와 스프라켓(30)의 통공(31)에 내설되는 스프링(52) 및 스프링(52)의 변위를 감지하는 로드셀(53)로 구성된 감지수단(50)과;It consists of a steel ball 51 which is installed in the long groove 21 of the housing 20, a spring 52 installed in the through hole 31 of the sprocket 30 and a load cell 53 for detecting the displacement of the spring 52. Sensing means 50; 상기 엔드커버(40)의 중앙에 설치되어 로드셀(53)의 선이 꼬임 없이 외부로 변위 값이 전달되도록 하는 슬립링(60)으로 구성됨을 특징으로 하는 과부하 방지장치.Overload prevention device is installed in the center of the end cover 40, characterized in that consisting of a slip ring (60) to transmit the displacement value to the outside without twisting the line of the load cell (53). 제 1항에 있어서,The method of claim 1, 하우징(20)의 장홈(21)은, 바닥면의 중앙은 낮고 양측 가장자리로 향할수록 점진적으로 높아지는 형태로 제작되어, 강구(51)가 장홈(21)의 경사면을 따라 이동함에 따라 강구(51)의 후방에 위치한 스프링(52)에 압축력이 발생되며, 이를 로드셀(53)로 감지하도록 구성됨을 특징으로 하는 과부하 방지장치.The long groove 21 of the housing 20 is manufactured in a form in which the center of the bottom surface is low and gradually increases toward both edges, so that the steel ball 51 moves along the inclined surface of the long groove 21. Compression force is generated in the spring (52) located at the rear of the overload protection device, characterized in that configured to detect this as a load cell (53).
KR1020080133260A 2008-12-24 2008-12-24 Overload protection apparatus KR100902554B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101348246B1 (en) * 2012-02-07 2014-01-09 주식회사성우 Device for isolation over load in power transmission apparatus
WO2014074831A3 (en) * 2012-11-09 2014-07-31 Lord Corporation Improved slip ring devices, systems, and methods
KR102062850B1 (en) * 2019-07-12 2020-01-07 광희엔지니어링 주식회사 Urgency block equipment of Floodgate winch

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2541639Y2 (en) * 1991-08-08 1997-07-16 愛知機械工業株式会社 Overload input prevention structure for two-way differential clutch
JPH0818794B2 (en) * 1992-12-16 1996-02-28 象印チエンブロック株式会社 Overload prevention device for hoisting and towing machines
KR960013403B1 (en) * 1993-07-31 1996-10-04 김유학 Two step torgue limit device against overload
KR100415628B1 (en) * 2001-07-09 2004-01-24 주식회사 안다미로 Apparatus for preventing undeserved load on motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101348246B1 (en) * 2012-02-07 2014-01-09 주식회사성우 Device for isolation over load in power transmission apparatus
WO2014074831A3 (en) * 2012-11-09 2014-07-31 Lord Corporation Improved slip ring devices, systems, and methods
KR102062850B1 (en) * 2019-07-12 2020-01-07 광희엔지니어링 주식회사 Urgency block equipment of Floodgate winch

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