KR960010259Y1 - Hydraulic pressure cylinder - Google Patents

Hydraulic pressure cylinder Download PDF

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Publication number
KR960010259Y1
KR960010259Y1 KR2019940015534U KR19940015534U KR960010259Y1 KR 960010259 Y1 KR960010259 Y1 KR 960010259Y1 KR 2019940015534 U KR2019940015534 U KR 2019940015534U KR 19940015534 U KR19940015534 U KR 19940015534U KR 960010259 Y1 KR960010259 Y1 KR 960010259Y1
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KR
South Korea
Prior art keywords
piston
rod
hydraulic cylinder
ring
operating rod
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KR2019940015534U
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Korean (ko)
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KR960002212U (en
Inventor
조대원
김범득
Original Assignee
포항종합제철주식회사
김만제
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Priority to KR2019940015534U priority Critical patent/KR960010259Y1/en
Publication of KR960002212U publication Critical patent/KR960002212U/en
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Publication of KR960010259Y1 publication Critical patent/KR960010259Y1/en

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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
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • 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
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1457—Piston rods
    • 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

내용없음.None.

Description

유압 실린더Hydraulic cylinder

제1도는 본 고안에 따른 유압실린더의 일부 절개 단면도.1 is a partial cross-sectional view of the hydraulic cylinder according to the present invention.

제1도는 본 고안에 따른 유압실린더의 요부를 보다 상세히 도시한 구성도.1 is a configuration diagram showing the main portion of the hydraulic cylinder according to the present invention in more detail.

제3도는 종래기술에 따른 유압실린더의 구성도이다.3 is a configuration diagram of a hydraulic cylinder according to the prior art.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 오목홈 15 : 작동유 공급구멍10: concave groove 15: working oil supply hole

17a,17b : 테이퍼홈 20 : 긴구멍17a, 17b: tapered groove 20: long hole

25 : 보울트부재 105 : 튜브(Tube)25: bolt member 105: tube

107 : 피스톤 110 : 작동로드107: piston 110: working rod

115 : 완충링 L : 긴구멍의 길이115: buffer ring L: length of the long hole

본 고안은 성능이 향상된 유압실린더에 관한 것으로, 보다 상세히는 피스톤을 윤활시킴으로서 마모를 방지하여 원활한 전, 후진 작동을 이루고, 작동로드의 선단부와 로드 연결구의 이완을 방지하며, 피스톤의 전, 후 이동시 완충효과가 우수하도록 개선된 유압실린더에 관한 것이다. 일반적으로 유압실린더(100)는 제3도에 도시된 바와같이 원통형 튜브(105)의 내측에서 유압에 의하여 전, 후 이동되는 피스톤(107)를 갖추며, 상기 피스톤(107)의 일측으로는 작동로드(110)가 연결되고, 상기 작동로드(110)의 단부에는 숫나사부(110a)가 형성되며, 상기 숫나사부(110a)에는 로드 연결구(112)가 나사결합되는 구성을 갖는다. 또한, 튜브(105)의 내측 전, 후단에는 피스톤(107)이 접근할 때 발생하는 충격력을 감소시키기 위하여 완충링(115)을 갖추며, 이는 완충링(115)에 피스톤(107)의 전, 후 측면에 형성된 원기둥형상의 링부재(118)가 근접되어 작동유체의 흐름을 차단함으로서 완충효과를 얻도록 되어 있다. 그러나, 상기와 같은 종래의 유압실린더(100)는 튜브(105)와 피스톤(107)의 마찰마모를 감소시키기 위하여 피스톤(107)의 외측에 O-링(120)을 끼우고 있으나 원활한 윤활효과를 얻지 못하게 되고, 따라서 피스톤(107)의 편마모를 초래하여 작동우체가 누설됨으로서 유압작동력이 저하되는 문제점이 있다. 또한, 튜브(105)의 완충링(115) 내에 위치한 작동유체를 피스톤(107)의 링부재(118)가 일시 차단하여 완충효과를 얻고자 하고 있지만 완충링(115)에 링부재(118)가 접근하는 순간 튜브(105)의 전, 후단에서는 큰 충격이 발생되어 유압실린더(100)를 흔들어주게 되고, 이러한 충격력은 각종 연결부분의 누유현상을 초래하는 문제점을 갖는다. 뿐만 아니라, 작동로드(110)와 로드 연결구(112)가 나사결합되어 있기 때문에 작동로드(110)의 반복적인 전, 후 이동에 의하여 나사결합부가 이완되고 따라서 작동로드(110)와 로드 연결구(112)의 결합길이가 변하게 되어 유압실린더(100)의 행정(Stroker)이 정확하게 유지되지 못하는 문제점도 발생하시키는 것이다. 본 고안은 상기와 같은 종래의 문제점을 해소하기 의한 것으로, 피스톤의 작동시 튜브와의 마찰을 최소화하도록 적정한 윤활유를 공급시키고, 완충링과 링부재의 결합시 충격력을 환화시키며, 작동로드의 선단부와 로드연결구의 이완을 방지하여 정확한 행정거리가 유지될 수 있도록 개선된 유압실린더를 제공함에 그 목적이 있다. 상기 목적을 달성하기 위하여, 본 고안은 원통형 튜브의 내측에서 전, 후 이동되는 피스톤을 갖추고, 상기 피스톤의 일측으로는 작동로드가 연결되며, 상기 작동로드의 단부에는 숫나사부가 형성되고, 상기 숫나사부에는 로드연결구가 나사결합되며, 상기 작동로드의 선단부에는 ＋형의 긴구멍을 형성하고, 상기 긴구멍에는 로드연결구를 관통하는 보울트부재가 끼워져서 작동로드와 로드연결구가 결합되는 유압실린더에 있어서, 상기 피스톤의 외주면 중앙에는 원주방향으로 오목홈을 가공하고, 상기 오목홈과 피스톤의 일측면을 연결하는 작동유 공급구멍을 형성하며, 상기 튜브의 완충링에 접하는 링부재에는 각각 상기 완충링내부의 윤활유가 유출될 수 있는 테이퍼홈이 피스톤 방향측으로 가공됨을 특징으로 하는 유압실린더를 마련함에 의한다. 이하, 본 고안을 도면에 따라서 보다 상세하게 설명한다. 제1도 및 제2도에는 본 고안에 따른 유압실린더(1)가 전체적으로 도시되어 있다. 상기 유압실린더(1)는 피스톤(107)의 외주면에 원주방향으로 오목홈(10)을 형성하는바, 상기 오목홈(10)은 O-링 삽입홈(12a)(12b)의 중앙에 형성되는 것이 바람직하고, 상기 오목홈(10)에는 피스톤(107)의 일측면에 연이어 통하는 작동유 공급구멍(15)이 L형으로 형성된다. 따라서, 피스톤(107)의 전, 후 이동시 상기 작동유 공급구멍(15)으로는 작동유체가 유입되어 피스톤(107)의 외주면을 윤활시킬 수 있는 것이다. 또한 상기 피스톤(107)의 양측면에 위치한 링부재(118)에는 각각 테이퍼홈(17a)(17b)이 오목 가공되는바, 상기 테이퍼홈(17a)(17b)은 링부재(118)가 각각 피스톤(107)의 전, 후 이동에 따라서 튜브(105)의 전, 후 내측단부에 위치된 완충링(115)에 결합되는 경우 완충링(115) 내부의 작동유체가 상기 테이퍼홈(17a)(17b)을 따라서 외측으로 유출됨으로서 피스톤(107)의 링부재(118)에 의한 돌발적인 충격현상을 환충시킬 수 있다. 그리고, 상기 피스톤(107)의 작동로드(110)에는 그 선단부에 ＋형의 긴구멍(20)이 형성하는바, 상기 긴구멍(20)에는 로드 연결구(112)가 작동로드(110)에 나사결합된 상태에서 로드 연결구(112)의 관통구멍(112a)으로 끼워지는 보울트부재(25)가 삽입됨으로서 작동로드(110)의 전, 후 이동시 로드연결구(112)가 작동로드(110)에 대하여 회전이 방지되고, 따라서 나사 결합부의 이완이 방지되는 것이다. 뿐만 아니라, 상기 긴구멍(20)은 작동로드(110)의길이를 변경시키고자 하는 경우, 작업자가 보울트부재(2)를 취외한 상태에서 로드 연결구(112)를 회전시켜 작동로드(110)의 길이를 조정한 다음, 다시 보울트부재(25)를 관통구멍(112a)과 긴구멍(20)으로 끼우면 간단하게 작동로드(10)의 길이조절이 가능하며, 로드연결구(112)와 작동로드(110)의 이완이 방지된다. 이는 ＋형 긴구멍(20)이 각각 일정길이(L)를 갖기 때문에 작동로드(110)의 길이 조정을 충분히 수용할 수 있는 것이다. 상기에서와 같이 본 고안에 의하면, 피스톤의 전, 후 이동시 작동유 공급구멍(15)과 오목홈(10)을 통하여 작동유체가 원활하게 공급되기 때문에 피스톤(107)의 편마모를 방지하여 안정된 전, 후 이동작동을 이룰 수 있게 되고, 링부재(118)에 각각 마련된 테이퍼홈(17a)(17b)에 의해서 작동유체가 링부재(118) 외측으로 누출되기 때문에 충격현상이 크게 완화되며, 상기 로드 연결구(112)를 관통하는 보울트부재(25)가 작동로드(110)으 긴구멍(20)으로 끼워 결합되기 때문에 로드 연결구와 작동로드의 이완이 방지됨으로서 작동로드(110)의 행정거리를 정확하게 유지시킬 수 있는 실용상의 효과를 얻는 것이다.The present invention relates to a hydraulic cylinder with improved performance, and more specifically, to lubricate the piston to prevent abrasion, to achieve smooth forward and backward operation, to prevent loosening of the front end of the working rod and the rod connector, and to move the piston forward and backward. The present invention relates to a hydraulic cylinder improved to have a good cushioning effect. In general, the hydraulic cylinder 100 is provided with a piston 107 which is moved back and forth by hydraulic pressure inside the cylindrical tube 105, as shown in Figure 3, one side of the piston 107 is an operating rod 110 is connected, the end of the operation rod 110 is formed with a male screw portion (110a), the male screw portion (110a) has a configuration in which the rod connector 112 is screwed. In addition, the inner and front ends of the tube 105 is provided with a buffer ring 115 to reduce the impact force generated when the piston 107 approaches, which is before and after the piston 107 to the buffer ring 115 The cylindrical ring member 118 formed on the side is close to block the flow of the working fluid to obtain a buffering effect. However, the conventional hydraulic cylinder 100 as described above, but the O-ring 120 to the outside of the piston 107 in order to reduce the frictional wear of the tube 105 and the piston 107, but the smooth lubrication effect There is a problem that the hydraulic actuation force is lowered because the operation body is leaked due to uneven wear of the piston 107. In addition, although the ring member 118 of the piston 107 temporarily blocks the working fluid located in the buffer ring 115 of the tube 105 to obtain a buffering effect, the ring member 118 is provided in the buffer ring 115. At the moment of approaching, a large shock is generated at the front and rear ends of the tube 105 to shake the hydraulic cylinder 100, and such an impact force causes a problem of leakage of various connection parts. In addition, since the actuating rod 110 and the rod connector 112 are screwed together, the screw coupling part is relaxed by the repetitive before and after movement of the actuating rod 110 and thus the actuating rod 110 and the rod connector 112 Coupling length of the) is changed to cause a problem that the stroke (Stroker) of the hydraulic cylinder 100 is not maintained correctly. The present invention is to solve the conventional problems as described above, to supply the appropriate lubricating oil to minimize the friction with the tube during the operation of the piston, to circulate the impact force when the buffer ring and the ring member is combined, It is an object of the present invention to provide an improved hydraulic cylinder to prevent loosening of the rod connector so that an accurate stroke can be maintained. In order to achieve the above object, the present invention has a piston that is moved forward and backward in the inner side of the cylindrical tube, one side of the piston is connected to the operation rod, the end of the operation rod is formed with a male screw portion, the male screw portion In the hydraulic cylinder to which the rod connector is screwed, the end of the working rod forms a + -shaped long hole, the long hole is fitted with a bolt member penetrating the rod connector, the operating rod and the rod connector is coupled, In the center of the outer circumferential surface of the piston is formed a concave groove in the circumferential direction, and forming a hydraulic oil supply hole for connecting the concave groove and one side of the piston, each of the ring members in contact with the buffer ring of the tube, the lubricant inside the buffer ring By providing a hydraulic cylinder characterized in that the tapered groove which can flow out is processed toward the piston direction. Hereinafter, the present invention will be described in more detail with reference to the drawings. 1 and 2, the hydraulic cylinder 1 according to the present invention is shown as a whole. The hydraulic cylinder 1 forms a concave groove 10 in the circumferential direction on the outer circumferential surface of the piston 107, and the concave groove 10 is formed at the center of the O-ring insertion grooves 12a and 12b. Preferably, the concave groove 10 is formed with an L-shaped hydraulic oil supply hole 15 which is in communication with one side of the piston 107. Therefore, when the piston 107 moves before and after, the hydraulic fluid flows into the hydraulic oil supply hole 15 to lubricate the outer circumferential surface of the piston 107. In addition, the tapered grooves 17a and 17b are recessed in the ring members 118 located at both side surfaces of the piston 107, and the tapered grooves 17a and 17b are formed in the ring members 118, respectively. When coupled to the buffer ring 115 located at the inner end of the tube 105 before and after the movement of the 107, the working fluid inside the buffer ring 115 is the tapered groove (17a) (17b) As a result of the outflow along the outside, a sudden impact phenomenon by the ring member 118 of the piston 107 may be rounded. In addition, a + -shaped long hole 20 is formed at the tip of the piston rod 107 of the piston rod 107, and a rod connector 112 is screwed into the rod 110 in the long hole 20. When the bolt member 25 is inserted into the through hole 112a of the rod connector 112 in the coupled state, the rod connector 112 rotates with respect to the operation rod 110 when the operating rod 110 moves forward and backward. This is prevented, and hence the loosening of the screw joint is prevented. In addition, when the long hole 20 is intended to change the length of the operation rod 110, the operator rotates the rod connector 112 in a state in which the bolt member 2 is removed from the operation rod 110. After adjusting the length, the bolt member 25 is inserted back into the through hole 112a and the long hole 20 so that the length of the actuating rod 10 can be easily adjusted, and the rod connector 112 and the actuating rod 110 are adjusted. ) Relaxation is prevented. This is because the + type long holes 20 each have a constant length L, so that the length adjustment of the operating rod 110 can be sufficiently accommodated. According to the present invention as described above, since the working fluid is smoothly supplied through the hydraulic oil supply hole 15 and the concave groove 10 during the movement of the piston before and after, it prevents uneven wear of the piston 107 before and after It is possible to achieve the movement operation, since the working fluid leaks out of the ring member 118 by tapered grooves 17a and 17b respectively provided in the ring member 118, the impact phenomenon is greatly alleviated, and the rod connector ( Since the bolt member 25 penetrating through the 112 is inserted into the long hole 20 of the actuating rod 110, the loosening of the rod connector and the actuating rod is prevented, so that the stroke distance of the actuating rod 110 can be maintained accurately. Is to obtain a practical effect.

Claims (1)

원통형 튜브(105)의 내측에서 전, 후 이동되는 피스톤(107)을 갖추고, 상기 피스톤(107)의 일측으로는 작동로드(110)가 연결되며, 상기 작동로드(110)의 단부에는 숫나사부(110a)가 형성되고, 상기 숫나사부(110a)에는 로드연결구(112)가 나사결합되며, 상기 작동로드(110)의 선단부에는 ＋형의 긴구멍(20)을 형성하고, 상기 긴구멍(20)에는 로드연결구(112)를 관통하는 보울트부재(25)가 끼워져서 작동로드(110)와 로드연결구(12)가 결합되는 유압실린더에 있어서, 상기 피스톤(107)의 외주면 중앙에는 원주방향으로 오목홈(10)을 가공하고, 상기 오목홈(10)과 피스톤(107)의 일측면을 연결하는 작동유 공급구멍(15)을 형성하며, 상기 튜브(105)의 완충링(115)에 접하는 링부재(118)에는 각각 상기 완충링내부의 윤활유가 유출될 수 있는 테이퍼홈(17a)(17b)이 피스톤 방향측으로 가공됨을 특징으로 하는 유압실린더.The inner side of the cylindrical tube 105 is provided with a piston 107 which is moved back and forth, the one side of the piston 107 is connected to the operating rod 110, the end of the operating rod 110, the male thread portion ( 110a is formed, the rod connector 112 is screwed to the male thread portion (110a), a + -shaped long hole 20 is formed in the front end of the operating rod 110, the long hole 20 In the hydraulic cylinder is inserted into the bolt member 25 penetrating the rod connector 112, the operating rod 110 and the rod connector 12, in the center of the outer peripheral surface of the piston 107 concave groove in the circumferential direction (10) processing, forming a hydraulic oil supply hole 15 for connecting the concave groove 10 and one side of the piston 107, the ring member in contact with the buffer ring 115 of the tube 105 ( 118, each of the tapered groove (17a) (17b) is processed to the piston direction side through which the lubricant oil in the buffer ring can flow out Hydraulic cylinder according to claim.
KR2019940015534U 1994-06-28 1994-06-28 Hydraulic pressure cylinder KR960010259Y1 (en)

Priority Applications (1)

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KR2019940015534U KR960010259Y1 (en) 1994-06-28 1994-06-28 Hydraulic pressure cylinder

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Application Number Priority Date Filing Date Title
KR2019940015534U KR960010259Y1 (en) 1994-06-28 1994-06-28 Hydraulic pressure cylinder

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KR960002212U KR960002212U (en) 1996-01-19
KR960010259Y1 true KR960010259Y1 (en) 1996-12-04

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