KR100916915B1 - Apparatus for inspecting of hydrauric cylinder - Google Patents

Apparatus for inspecting of hydrauric cylinder Download PDF

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KR100916915B1
KR100916915B1 KR1020020055871A KR20020055871A KR100916915B1 KR 100916915 B1 KR100916915 B1 KR 100916915B1 KR 1020020055871 A KR1020020055871 A KR 1020020055871A KR 20020055871 A KR20020055871 A KR 20020055871A KR 100916915 B1 KR100916915 B1 KR 100916915B1
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hydraulic cylinder
plc
rail
pressure
sensor
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KR1020020055871A
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KR20040024310A (en
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이일호
우한진
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주식회사 포스코
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type

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Abstract

본 발명은 유압실린더의 정확한 물리량을 기구적으로 측정하여 검사할 수 있는 유압실린더 검사장치를 제고하는 데 그 목적이 있다.It is an object of the present invention to provide a hydraulic cylinder inspection apparatus capable of mechanically measuring and inspecting an accurate physical quantity of a hydraulic cylinder.

따라서 본 발명은 레일 위에 유압실린더의 몸체가 축지지되도록 고정 설치되는 고정베이스, 고정베이스 전방의 레일 위에 상기 유압실린더의 크리비스가 안착되어 이동 가능하도록 설치된 이동베이스, 유압실린더의 커버에 설치되는 쿠션밸브, 유압실린더의 커버에 설치되는 압력센서, 압력센서 및 측정수단으로부터 전달된 신호를 연산하고 유압실린더에 공급되는 오일의 압력을 조절하는 피엘씨, 피엘씨를 제어하는 컴퓨터, 피엘씨에 전달된 신호를 디스플레이하는 모니터를 포함하는 유압실린더 검사장치를 제공한다.Therefore, the present invention is a fixed base that is fixedly installed so that the body of the hydraulic cylinder is axially supported on the rail, the movable base is installed on the cover of the hydraulic cylinder, the movable base installed so that the clivis of the hydraulic cylinder is seated on the rail in front of the fixed base Calculates the signal transmitted from the pressure sensor, pressure sensor, and measuring means installed on the cover of the valve, hydraulic cylinder, and controls the pressure of the oil supplied to the hydraulic cylinder, the computer controlling the PLC, the signal transmitted to the PLC It provides a hydraulic cylinder inspection device including a monitor to display the.

피엘씨, 컴퓨터, 각도센서, 거리센서PLC, computer, angle sensor, distance sensor

Description

유압실린더 검사장치{Apparatus for inspecting of hydrauric cylinder}Hydraulic cylinder inspection device {Apparatus for inspecting of hydrauric cylinder}

도 1은 본 발명에 따른 유압실린더 검사장치를 개념적으로 나타내는 개략도이다.1 is a schematic diagram conceptually showing a hydraulic cylinder inspection apparatus according to the present invention.

도 2는 본 발명에 따른 유압실린더 검사장치의 일부를 나타내는 사시도이다.2 is a perspective view showing a part of a hydraulic cylinder inspection apparatus according to the present invention.

도 3은 본 발명에 따른 유압실린더 검사장치의 모니터에 나타는 화면을 도시한 그림이다.3 is a view showing a screen displayed on the monitor of the hydraulic cylinder inspection apparatus according to the present invention.

도 4는 종래기술에 따른 유압실린더 검사장치를 나타내는 사시도이다.Figure 4 is a perspective view showing a hydraulic cylinder inspection apparatus according to the prior art.

<도면의 주요부분에 사용된 부호의 설명><Description of the code used in the main part of the drawing>

14 : 고정베이스 18 : 이동베이스14: fixed base 18: moving base

22 : 쿠션밸브 26 : 피엘씨22: cushion valve 26: PLC

28 : 컴퓨터 29 : 모니터28: computer 29: monitor

본 발명은 유압실린더의 기계적 성질을 측정하는 유압실린더 검사장치에 관한 것으로, 더욱 상세하게는 거리신호와 압력신호를 연산하여 유압실린더의 큐션상태를 검사하는 유압실린더 검사장치에 관한 것이다. The present invention relates to a hydraulic cylinder inspection device for measuring the mechanical properties of the hydraulic cylinder, and more particularly to a hydraulic cylinder inspection device for checking the cushion state of the hydraulic cylinder by calculating the distance signal and the pressure signal.                         

일반적으로 유압실린더는 압력에너지를 기계적에너지로 변환시켜 동력을 전달하거나 및 시스템을 제어하는 수단으로서 그 검사항목으로는 오일의 압력, 유랑, 작동성, 내압성 스트로크, 내부누설 등을 측정한다.In general, a hydraulic cylinder is a means for converting pressure energy into mechanical energy to transfer power or control a system. The inspection items include oil pressure, flow, operability, pressure resistant stroke, and internal leakage.

이와 같은 유압실린더의 검사작업은 도 4에 도시된 바와 같이 고정프레임(100) 위에 유압실리더(102)를 고정시키고, 이동프레임(104) 위에 크리비스(106)를 거치한 후, 실린더로드(108)를 팽창시키고 줄자를 이용하여 스트로크를 측정하였다. The inspection operation of the hydraulic cylinder is fixed to the hydraulic cylinder 102 on the fixed frame 100, as shown in Figure 4, after mounting the clivis 106 on the moving frame 104, the cylinder rod ( 108) was inflated and the stroke was measured using a tape measure.

그러나 검사결과가 측정자마다 상이하여 유압실린더의 설치가 불가능하거나 설치 후에도 누설이나 파손이 발생하여 이를 정비하기 위하여 라인을 정지시켜야 하므로 생산성이 떨어지는 문제점이 있다.However, there is a problem in that the productivity is low because the inspection results are different for each operator and the installation of the hydraulic cylinder is impossible or leakage or breakage occurs even after installation.

또한 오일의 누설로 인하여 유압실린더 설치부 주변이 오염되는 문제점이 있다.In addition, there is a problem that the hydraulic cylinder around the installation portion is contaminated due to the leakage of oil.

아울러 작업자가 수작업으로 측정하여야 하므로 인건비가 상승하여 생산원가가 증대되는 문제점이 있다.In addition, since the worker has to measure by hand, there is a problem that the production cost is increased by increasing labor costs.

따라서 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 유압실린더의 정확한 물리량을 기구적으로 측정하여 검사할 수 있는 유압실린더 검사장치를 제공하는 데 그 목적이 있다.Accordingly, an object of the present invention is to provide a hydraulic cylinder inspection apparatus capable of mechanically measuring and inspecting an accurate physical quantity of a hydraulic cylinder.

상기 목적을 달성하기 위하여 본 발명은 레일 위에 유압실린더의 몸체가 축 지지되도록 고정 설치되는 고정베이스, 고정베이스 전방의 레일 위에 상기 유압실린더의 크리비스가 안착되어 이동 가능하도록 설치된 이동베이스, 유압실린더의 커버에 설치되는 쿠션밸브, 유압실린더의 커버에 설치되는 압력센서, 압력센서 및 측정수단으로부터 전달된 신호를 연산하고 유압실린더에 공급되는 오일의 압력을 조절하는 피엘씨, 피엘씨를 제어하는 컴퓨터, 피엘씨에 전달된 신호를 디스플레이하는 모니터를 포함하는 유압실린더 검사장치를 제공한다.In order to achieve the above object, the present invention provides a fixed base which is fixedly installed so that the body of the hydraulic cylinder is axially supported on a rail. Calculates the signal transmitted from the cushion valve installed on the cover, the pressure sensor installed on the cover of the hydraulic cylinder, the pressure sensor, and the measuring means, and controls the pressure of oil supplied to the hydraulic cylinder. It provides a hydraulic cylinder inspection device comprising a monitor for displaying the signal transmitted to the seed.

여기서 측정수단은 레일의 일측에 고정 설치되는 컬럼, 이동베이스의 일측에 연결 설치되는 와이어, 이동베이스의 이동함에 따를 와이어의 각도변화를 감지하는 각도센서, 이동베이스의 이동함에 따른 와이어의 길이변화를 감지하는 거리센서로 이루어지는 것이 바람직하다.Here, the measuring means includes a column fixedly installed at one side of the rail, a wire connected to one side of the moving base, an angle sensor for detecting an angle change of the wire according to the movement of the moving base, and a change in the length of the wire due to the movement of the moving base. It is preferable that the distance sensor to detect.

이하 본 발명에 따른 유압실린더 검사장치를 첨부도면을 참조하여 설명하면 다음과 같다.Hereinafter, the hydraulic cylinder inspection apparatus according to the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 따른 유압실린더 검사장치를 개념적으로 나타내는 개략도이고, 도 2는 본 발명에 따른 유압실린더 검사장치의 일부를 나타내는 사시도이고, 도 3은 본 발명에 따른 유압실린더 검사장치의 모니터에 나타는 화면을 도시한 그림이다.1 is a schematic diagram conceptually showing a hydraulic cylinder inspection apparatus according to the present invention, Figure 2 is a perspective view showing a part of the hydraulic cylinder inspection apparatus according to the present invention, Figure 3 is a monitor of the hydraulic cylinder inspection apparatus according to the present invention Figure shows the screen that appears.

본 발명에 따른 유압실린더 검사장치는 레일(10) 위에 유압실린더(12)의 몸체가 축지지되도록 고정 설치되는 고정베이스(14), 고정베이스(14) 전방의 레일(10) 위에 유압실린더(12)의 크리비스(16)가 안착되어 이동 가능하도록 설치된 이동베이스(18), 유압실린더(12)의 스트로크를 측정하는 측정수단, 유압실린더(12) 의 커버(20)에 설치되는 쿠션밸브(22), 유압실린더(12)의 커버(20)에 설치되는 압력센서(24), 압력센서(24) 및 측정수단으로부터 전달된 신호를 연산하고 유압실린더(12)에 공급되는 오일의 압력을 조절하는 피엘씨(26), 피엘씨(26)를 제어하는 컴퓨터(28), 피엘씨(26)에 전달된 신호를 디스플레이하는 모니터(29)로 이루어진다.Hydraulic cylinder inspection apparatus according to the present invention is a fixed base 14 is fixedly installed so that the body of the hydraulic cylinder 12 is axially supported on the rail 10, the hydraulic cylinder 12 on the rail 10 in front of the fixed base 14 Movement base (18) installed so that the clivis (16) of the seat is movable, the measuring means for measuring the stroke of the hydraulic cylinder (12), and the cushion valve (22) installed on the cover (20) of the hydraulic cylinder (12). ), The pressure sensor 24 installed in the cover 20 of the hydraulic cylinder 12, the pressure sensor 24 and the signal transmitted from the measuring means to calculate the pressure of the oil supplied to the hydraulic cylinder 12 PLC 26, a computer 28 for controlling PLC 26, and a monitor 29 for displaying a signal transmitted to PLC 26.

고정베이스(14)는 레일(10) 위에 고정 설치되어 있고, 상단에는 유압실린더(12)의 몸체를 고정시키기 위한 클램프(30)가 설치된다.The fixed base 14 is fixedly installed on the rail 10, and the clamp 30 for fixing the body of the hydraulic cylinder 12 is installed at the upper end.

이동베이스(18)는 레일(10) 위에 수직으로 설치되고 하부에 바퀴(32)가 설치된 한 쌍의 가이드바(34)와, 이 가이드바(34)를 따라 승하강이 가능하도록 설치된 승하강판(36)으로 이루어진다.The movable base 18 is a pair of guide bars 34 installed vertically on the rail 10 and having wheels 32 installed at the bottom thereof, and a lifting plate installed to enable the ascending and descending along the guide bars 34. 36).

여기서 승하강판(36) 위에 유압실린더(12)의 크리비스(16)가 안착 고정되며 가이드바(34)의 외측에는 후술하는 와이어(38)가 고정되는 마그네틱 클램프(40)가 설치된다.Here, the magnetic clamp 40 to which the criby 16 of the hydraulic cylinder 12 is seated and fixed on the elevating plate 36 and the wire 38 to be described later is fixed to the outside of the guide bar 34.

측정수단은 유압실린더(12)의 스트로크를 측정하는 수단으로 레일(10)의 일측에 고정 설치되는 컬럼(42), 이동베이스(18)의 일측에 연결 설치되는 와이어(38), 이동베이스(18)의 이동함에 따를 와이어(38)의 각도변화를 감지하는 각도센서(44), 이동베이스(18)의 이동함에 따른 와이어(38)의 길이변화를 감지하는 거리센서(46)로 이루어진다.The measuring means is a means for measuring the stroke of the hydraulic cylinder 12, the column 42 fixed to one side of the rail 10, the wire 38 connected to one side of the moving base 18, the moving base 18 An angle sensor 44 for detecting an angle change of the wire 38 according to the movement of the (), and a distance sensor 46 for detecting a change in the length of the wire 38 as the movement base 18 moves.

컬럼(42)은 레일(10)의 일측에 고정 설치되고 레일(10)의 상단에는 각도센서(44) 및 거리센서(46)가 설치된다.The column 42 is fixedly installed at one side of the rail 10, and an angle sensor 44 and a distance sensor 46 are installed at the upper end of the rail 10.

와이어(38)는 이동베이스(18)와 컬럼(42)의 상단 사이에 설치되며, 이동베이 스(18)가 이동함에 따라 이동 및 회전된다.The wire 38 is installed between the moving base 18 and the upper end of the column 42, and moves and rotates as the moving base 18 moves.

따라서 와이어(38)의 각도변화 및 길이변화를 감지하는 각도센서(44) 및 거리센서(46)가 컬럼에 설치된다.Therefore, an angle sensor 44 and a distance sensor 46 for detecting an angle change and a length change of the wire 38 are installed in the column.

압력센서(24)는 유압실린더(12)의 양측에 설치된 커버(20)의 내측으로 설치되며 이 압력센서(24) 검출된 신호는 후술하는 피엘씨(26)에 전달된다.The pressure sensor 24 is installed to the inside of the cover 20 provided on both sides of the hydraulic cylinder 12, the signal detected by the pressure sensor 24 is transmitted to the PLC 26 to be described later.

피엘씨(26)는 압력센서(24)와 측정수단인 각도센서(44) 및 거리센서(46)로 부터 신호를 전달받아 이를 연산하여 모니터(29)에 디스플레이하고, 후술하는 컴퓨터(28)의 제어에 의해 유압실린더(12)에 공급되는 오일의 압력을 조절한다.The PLC 26 receives a signal from the pressure sensor 24 and the angle sensor 44 and the distance sensor 46 which are measuring means, calculates it, displays it on the monitor 29, and the computer 28 to be described later. The pressure of the oil supplied to the hydraulic cylinder 12 is controlled by the control.

한편 피엘씨(26)에서 각도센서(44) 및 거리센서(46)로부터 전달된 신호로부터 유압실린더(12)의 스트로크를 구하기 위한 연산은 하기의 (식 1)과 같다.On the other hand, the calculation for calculating the stroke of the hydraulic cylinder 12 from the signals transmitted from the angle sensor 44 and the distance sensor 46 in the PLC 26 is as follows (Equation 1).

Figure 112002030096015-pat00001
Figure 112002030096015-pat00001

-----(식 1) ----- (equation 1)

(여기서, C는 스트로크, A와 B는 실린더로드의 사점에서의 거리, θ는 실린더로드의 사점간의 각도)(Where C is the stroke, A and B are the distances from the dead points of the cylinder rods, and θ is the angle between the dead points of the cylinder rods)

컴퓨터(28)는 피엘씨(26)를 제어하도록 설치되어, 유압실린더(12)에 공급되는 오일의 압력을 조절할 수 있다.The computer 28 is installed to control the PLC 26 to adjust the pressure of oil supplied to the hydraulic cylinder 12.

이하 본 발명에 따른 유압실린더 검사장치를 첨부도면을 참조하여 설명하면 다음과 같다. Hereinafter, the hydraulic cylinder inspection apparatus according to the present invention will be described with reference to the accompanying drawings.                     

레일(10) 위에 고정 설치된 고정베이스(14) 위에 검사할 유압실린더(12)를 올려놓고 크리비스(16)를 이동베이스(18)의 승하강판(36) 상부에 고정시킨다.The hydraulic cylinder 12 to be inspected is placed on the fixed base 14 fixedly installed on the rail 10, and the crivis 16 is fixed to the upper and lowered plate 36 of the movable base 18.

다음으로 와이어(38)를 이동베이스(18) 측면의 마그네틱 클램프(40)에 고정시킨 후, 컴퓨터(28)를 통하여 피엘씨(26)에 오일에 압력을 입력하면 피엘씨(26)에 의해 유압실린더(12)에 입력된 압력으로 오일이 공급된다.Next, the wire 38 is fixed to the magnetic clamp 40 on the side of the movable base 18, and when the pressure is input to the PLC 26 through the computer 28, the hydraulic pressure is generated by the PLC 26. Oil is supplied at the pressure input to the cylinder 12.

오일이 공급되어 유압실린더(12)의 실린더로드가 작동을 시작하면 압력센서(24)에서는 유압실린더(12) 내부의 압력이, 각도센서(44)에서는 와이어(38)의 각도가, 거리센서(46)에서는 와이어(38)의 거리가 피엘씨(26)에 입력되어 연산된다.When oil is supplied and the cylinder rod of the hydraulic cylinder 12 starts operation, the pressure inside the hydraulic cylinder 12 in the pressure sensor 24, the angle of the wire 38 in the angle sensor 44, and the distance sensor ( In 46, the distance of the wire 38 is input to the PLC 26 and calculated.

여기서 연산된 데이터는 시간에 따른 압력과 스트로크가 모니터(29)에 그래프 형태로 디스플레이된다.The calculated data is displayed on the monitor 29 in the form of a graph of pressure and stroke over time.

이와 같이 모니터(2)에 디스플레이 된 그래프를 통하여 작업자는 쿠션의 특성을 파악할 수 있다.As such, the operator can grasp the characteristics of the cushion through the graph displayed on the monitor (2).

한편 여기서 파악된 쿠션의 특성이 작업자가 기대하고 있는 특성을 만족하지 못할 경우 쿠션밸브(22)의 개도를 조절하여 작업자가 원하고자 하는 특성을 얻을 때까지 검사작업을 반복한다.On the other hand, if the characteristics of the cushion identified here does not satisfy the characteristics expected by the operator by adjusting the opening degree of the cushion valve 22 to repeat the inspection work until the operator obtains the desired characteristics.

이와 같이 본 발명에 따른 유압실린더 검사장치는 검사결과가 일정하여 쿠션의 특성이 동일하므로 누설이나 파손으로 인해 라인을 정지시킬 필요가 없어 생산성이 향상된다. As described above, the hydraulic cylinder inspection device according to the present invention does not need to stop the line due to leakage or breakage since the inspection results are constant and the characteristics of the cushion are the same, thereby improving productivity.                     

또한 유압실린더에 누설이 발생되지 않으므로 환경오염이 방지된다.In addition, since no leakage occurs in the hydraulic cylinder, environmental pollution is prevented.

아울러 전담 작업자가 필요없으므로 인건비가 절약되어 생산원가가 줄어든다.In addition, there is no need for a dedicated worker, which saves labor costs and reduces production costs.

Claims (2)

레일 위에 유압실린더의 몸체가 축지지되도록 고정 설치되는 고정베이스, 상기 고정베이스 전방의 레일 위에 상기 유압실린더의 크리비스가 안착되어 이동 가능하도록 설치된 이동베이스, 상기 유압실린더의 스트로크를 측정하는 측정수단, 상기 유압실린더의 커버에 설치되는 쿠션밸브, 상기 유압실린더의 커버에 설치되는 압력센서, 상기 압력센서 및 상기 측정수단으로부터 전달된 신호를 연산하고 상기 유압실린더에 공급되는 오일의 압력을 조절하는 피엘씨, 상기 피엘씨를 제어하는 컴퓨터, 상기 피엘씨에 전달된 신호를 디스플레이하는 모니터를 포함하되,A fixed base fixedly installed so that the body of the hydraulic cylinder is axially supported on the rail, a moving base installed to move the clivis of the hydraulic cylinder on the rail in front of the fixed base, and measuring means for measuring the stroke of the hydraulic cylinder; PLC to calculate the signal transmitted from the cushion valve installed on the cover of the hydraulic cylinder, the pressure sensor installed on the cover of the hydraulic cylinder, the pressure sensor and the measuring means and to adjust the pressure of the oil supplied to the hydraulic cylinder A computer for controlling the PLC, including a monitor for displaying the signal transmitted to the PLC, 상기 측정수단은 상기 레일의 일측에 고정 설치되는 컬럼, 상기 이동베이스의 일측에 연결 설치되는 와이어, 상기 이동베이스의 이동함에 따를 와이어의 각도변화를 감지하는 각도센서, 상기 이동베이스의 이동함에 따른 와이어의 길이변화를 감지하는 거리센서로 이루어지는 것을 특징으로 하는 유압실린더 검사장치.The measuring means includes a column fixedly installed at one side of the rail, a wire connected to one side of the movable base, an angle sensor for detecting an angle change of the wire according to the movement of the movable base, and a wire according to the movement of the movable base. Hydraulic cylinder inspection device, characterized in that consisting of a distance sensor for detecting the change in length. 삭제delete
KR1020020055871A 2002-09-13 2002-09-13 Apparatus for inspecting of hydrauric cylinder KR100916915B1 (en)

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KR101015038B1 (en) * 2010-06-09 2011-02-16 엘아이지넥스원 주식회사 Apparatus for testing of actuator
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KR101539084B1 (en) * 2014-09-02 2015-07-23 부림자동화(주) Cushion efficiency and stroke measuring equipment and the measuring method that use flow meter
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