KR200397648Y1 - Tilting Cylinder for Lift - Google Patents
Tilting Cylinder for Lift Download PDFInfo
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- KR200397648Y1 KR200397648Y1 KR20-2005-0019667U KR20050019667U KR200397648Y1 KR 200397648 Y1 KR200397648 Y1 KR 200397648Y1 KR 20050019667 U KR20050019667 U KR 20050019667U KR 200397648 Y1 KR200397648 Y1 KR 200397648Y1
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- cylinder tube
- piston
- inner cylinder
- tube
- rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/44—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading having a loading platform thereon raising the load to the level of the load-transporting element
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
- B60P1/16—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element actuated by fluid-operated mechanisms
- B60P1/162—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element actuated by fluid-operated mechanisms the hydraulic system itself
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
- F16F9/5126—Piston, or piston-like valve elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/14—Trucks; Load vehicles, Busses
- B60Y2200/145—Haulage vehicles, trailing trucks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Actuator (AREA)
Abstract
본 고안은 리프트의 승강판 각도에 따라 속도를 변속하고 정지위치에서 충격을 흡수하도록 한 리프트용 틸팅실린더에 관한 것으로, 외측실린더튜브(30)의 내측에 이형관 형태의 내측실린더튜브(20)를 설치하고, 외측실린더튜브(30)의 내부를 양분하는 튜브측피스톤(22)에 외측실린더튜브(30)와 내측실린더튜브(20)로 통하는 제 1유로(22a)를 형성하며, 로드측피스톤(42)을 내측실린더튜브(20)의 내측에서 리턴스프링(50)으로 지지하고, 피스톤로드(40)와 로드측피스톤(42)에 내측실린더튜브(20)의 양측으로 통하는 제 2유로(42a)를 형성하여 그 중간에 리턴스프링(50)에 의해 개방하는 체크밸브(60)를 설치하며, 로드측피스톤(42)에 내측실린더튜브(20)의 양측으로 통하는 오리피스(42b)를 형성하고, 내측실린더튜브(20)의 중간에 레듀사(21)를 설치하여 대경측에서는 로드측피스톤(42)과 소정간격(G)으로 이격되는 제 3유로(21a)를 형성하며, 소경측에서는 로드측피스톤(42)과 일치하여 오리피스(42b)에 의한 완충유로를 형성한다.The present invention relates to a tilting cylinder for a lift to change the speed according to the lifting plate angle of the lift and to absorb the shock at the stop position, the inner cylinder tube 20 in the form of a release tube is installed inside the outer cylinder tube (30). And a first flow passage 22a communicating with the outer cylinder tube 30 and the inner cylinder tube 20 in the tube side piston 22 which bisects the inside of the outer cylinder tube 30, and the rod side piston 42. ) Is supported by the return spring 50 on the inner side of the inner cylinder tube 20, and the second flow passage 42a which communicates with the piston rod 40 and the rod side piston 42 to both sides of the inner cylinder tube 20 is provided. A check valve 60 is formed in the middle thereof, and is opened by a return spring 50, and an orifice 42b is formed in the rod side piston 42, which communicates with both sides of the inner cylinder tube 20, and the inner cylinder is formed. The red yarn 21 is installed in the middle of the tube 20, and the rod is loaded To form a piston 42 and a third flow path (21a) being spaced a predetermined distance (G), the small-diameter side in line with the piston rod side (42) forms a buffer flow passage by an orifice (42b).
Description
본 고안은 리프트의 승강판 각도를 조절하는데 이용되는 리프트용 틸팅실린더에 관한 것으로, 더욱 상세하게는 승강판의 각도에 따라 속도를 변속하고 정지위치에서 충격을 흡수하도록 한 리프트용 틸팅실린더에 관한 것이다.The present invention relates to a tilting cylinder for a lift used to adjust the angle of the lifting plate of the lift, and more particularly to a tilting cylinder for lift to change the speed according to the angle of the lifting plate and to absorb the shock at the stop position. .
일반적으로 화물자동차에 적용되는 리프트는 적재함의 후면에 설치되어 화물을 적재함 높이까지 상승시키거나 지면으로 하강시켜 화물을 안전하고 편리하게 싣고 내리는데 이용되는 것으로, 승강실린더에 의해 승강판이 승강되도록 구성되며, 승강프레임과 승강판 사이에 설치되는 틸팅실린더에 의해 화물을 실을 때는 승강판을 수평하게 펴고, 도로를 주행할 때는 수직으로 접어서 운행중 장애가 발생되지 않도록 되어 있었고, 승강판 하강시 끝부분이 지면에 닿도록 틸팅실린더에 의해 승강판이 아래쪽으로 약간 기울어지도록 구성되어 있었다.In general, a lift applied to a freight vehicle is installed at the rear of the loading box and used to lift and lower the cargo to the height of the loading box or to lower the ground to safely and conveniently load the cargo, and the lifting plate is lifted by the lifting cylinder. Tilting cylinders are installed between the lifting frame and the lifting plate to spread the lifting plate horizontally when loading the cargo, and to fold vertically when driving the road so that no obstacles occur during operation. The lifting plate was tilted slightly downward by the tilting cylinder to reach.
그러나, 이와 같은 종래 틸팅실린더는 전 행정구간이 일정한 속도를 갖는 단동실린더로 구성되어 있었기 때문에 승강판에 화물을 싣고 지면으로부터 들어서 수평하게 할 때 큰 부하가 걸리는 것을 감안 유압실린더 및 유압펌프를 대용량으로 키워야 하는 문제점이 있었다.However, since the conventional tilting cylinder is composed of a single acting cylinder having a constant speed, the hydraulic cylinder and the hydraulic pump have a large capacity in consideration of the fact that a large load is required when the cargo is placed on the lifting plate and lifted from the ground. There was a problem that needs to be raised.
또한, 종래 틸팅실린더는 승강판이 수직으로 정지하는 순간 틸팅실린더가 갖고 있는 운동에너지를 흡수할 수 없는 구조로 되어 있었기 때문에 심한 충격음이 발생하고, 유압장치에 과부하가 걸리면서 고장을 일으키는 문제점을 갖고 있었다.In addition, the conventional tilting cylinder has a structure that can not absorb the kinetic energy of the tilting cylinder at the moment when the lifting plate is stopped vertically, there is a problem that severe impact sound occurs, and the hydraulic device is overloaded, causing a failure.
본 고안은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 그 목적은 리프트의 승강판 위치에 따라 속도와 힘을 적절하게 가변할 수 있도록 함으로써 보다 작은 용량의 유압장치로의 구성이 가능하고, 승강판이 수직으로 정지 할 때 틸팅실린더 및 유압장치에 가해지는 충격을 완화할 수 있으며, 승강판을 수평하게 펴가나 수직으로 접을 때 보다 빠른 속도를 낼 수 있는 리프트용 틸팅실린더를 제공함에 있다.The present invention has been devised to solve the above problems, the purpose of which can be configured as a hydraulic device of a smaller capacity by being able to appropriately vary the speed and force according to the position of the lifting plate of the lift, It is possible to alleviate the impact on the tilting cylinder and the hydraulic device when the plate is stopped vertically, and to provide a tilting cylinder for the lift that can achieve a higher speed than when the lifting plate is extended horizontally or folded vertically.
이러한 본 고안의 목적을 달성하기 위하여 양측에 오일포트를 갖는 외측실린더튜브의 내측에 이형관 형태의 내측실린더튜브를 설치하고, 그 내측실린더튜브의 일측에 설치되어 외측실린더튜브의 내부를 양분하는 튜브측피스톤에 외측실린더튜브와 내측실린더튜브로 통하는 제 1유로를 형성하며, 피스톤로드의 일측에 설치된 로드측피스톤을 상기 내측실린더튜브의 내측에서 리턴스프링으로 지지하고, 피스톤로드와 로드측피스톤에 내측실린더튜브의 양측으로 통하는 제 2유로를 형성하여 그 중간에 리턴스프링에 의해 개방하는 체크밸브를 설치하며, 로드측피스톤에 내측실린더튜브의 양측으로 통하는 오리피스를 형성하고, 내측실린더튜브의 중간에 대경측과 소경측으로 구분하는 레듀사를 설치하여 대경측에서는 로드측피스톤과 소정간격으로 이격되는 제 3유로를 형성하며, 소경측에서는 로드측피스톤과 일치하여 오리피스에 의한 완충유로를 형성하도록 구성하여 리프트용 틸팅실린더가 제공된다.In order to achieve the object of the present invention, the inner cylinder tube in the form of a release tube in the inner side of the outer cylinder tube having an oil port on both sides, is installed on one side of the inner cylinder tube to bisect the inside of the outer cylinder tube A first flow path is formed in the piston to communicate with the outer cylinder tube and the inner cylinder tube, and the rod side piston installed on one side of the piston rod is supported by the return spring on the inside of the inner cylinder tube, and the inner cylinder is mounted on the piston rod and the rod side piston. A check valve is formed in the middle of the inner cylinder tube, and a check valve is formed in the middle of the inner cylinder tube. Redundant yarn is divided into small diameter side and small diameter side. A third flow path spaced apart is formed, and on the small diameter side, a tilting cylinder for a lift is provided by being configured to form a buffer flow path by an orifice in line with the rod side piston.
이하 본 고안에 따른 실시예를 첨부도면을 참조하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
첨부도면 도1 내지 도7에 도시된 바와 같이 양측에 오일포트(32a)(32b)를 갖는 외측실린더튜브(30)의 내측에 이형관 형태의 내측실린더튜브(20)를 설치하고, 그 내측실린더튜브(20)의 일측에 설치되어 외측실린더튜브(30)의 내부를 양분하는 튜브측피스톤(22)에 외측실린더튜브(30)와 내측실린더튜브(20)로 통하는 제 1유로(22a)를 형성하며, 피스톤로드(40)의 일측에 설치된 로드측피스톤(42)을 상기 내측실린더튜브(20)의 내측에서 리턴스프링(50)으로 지지하고, 피스톤로드(40)와 로드측피스톤(42)에 내측실린더튜브(20)의 양측으로 통하는 제 2유로(42a)를 형성하여 그 중간에 리턴스프링(50)에 의해 개방하는 체크밸브(60)를 설치하며, 로드측피스톤(42)에 내측실린더튜브(20)의 양측으로 통하는 오리피스(42b)를 형성하고, 내측실린더튜브(20)의 중간에 대경측과 소경측으로 구분하는 레듀사(21)를 설치하여 대경측에서는 로드측피스톤(42)과 소정간격(G)으로 이격되는 제 3유로(21a)를 형성하며, 소경측에서는 로드측피스톤(42)과 일치하여 오리피스(42b)에 의한 완충유로를 형성하도록 구성한다.As shown in Figs. 1 to 7, the inner cylinder tube 20 in the form of a release tube is installed inside the outer cylinder tube 30 having the oil ports 32a and 32b on both sides thereof, and the inner cylinder tube thereof. It is provided on one side of the (20) to form a first flow path (22a) to communicate with the outer cylinder tube 30 and the inner cylinder tube (20) in the tube side piston (22) for bisecting the interior of the outer cylinder tube (30) The rod side piston 42 installed at one side of the piston rod 40 is supported by the return spring 50 at the inner side of the inner cylinder tube 20, and is in the piston rod 40 and the rod side piston 42. A check valve 60 is formed to form a second flow passage 42a which communicates with both sides of the cylinder tube 20, and is opened by a return spring 50 in the middle thereof, and an inner cylinder tube ( An orifice 42b communicating with both sides of the cylinder 20 is formed, and a large diameter side and a small diameter side are formed in the middle of the inner cylinder tube 20. A red duct yarn 21 is formed to form a third flow passage 21a spaced apart from the rod side piston 42 and a predetermined distance G on the large diameter side, and on the small diameter side, the orifice (3) is coincided with the rod side piston 42. And a buffer passage according to 42b).
상기 오리피스(42b)는 매우 가느다란 관통구멍이며, 내측실린더튜브(20)에 형성할 수도 있다.The orifice 42b is a very thin through hole and may be formed in the inner cylinder tube 20.
또한, 외측실린더튜브(30)와 피스톤로드(40)에는 각각 클레비스결합부(30e)(40e)를 두어 리프트(80)의 승강프레임(도시 않됨)과 승강판(84) 사이를 핀으로 연결하도록 한다.In addition, the outer cylinder tube 30 and the piston rod 40 are provided with clevis coupling portions 30e and 40e, respectively, to connect the lift frame (not shown) and the lift plate 84 of the lift 80 with a pin. Do it.
그리고, 내측실린더튜브(20)는 레듀사(21)를 사이에 두고 양측에 완충실(A)과 증속실(B)로 구획되며, 외측실린더튜브(30)에는 증압실(C)이 형성된다.The inner cylinder tube 20 is divided into a buffer chamber A and a speed increase chamber B on both sides with a red yarn 21 therebetween, and an increase cylinder C is formed in the outer cylinder tube 30. .
도면 중 미설명 부호 100은 틸팅실린더 전체를 나타낸 것이다.In the drawing, reference numeral 100 denotes the entire tilting cylinder.
이하 본 고안에 따른 작용을 첨부도면 도면에 의거하여 상세히 설명한다.Hereinafter, the operation according to the present invention will be described in detail with reference to the accompanying drawings.
첨부도면 도1 내지 도3c에 도시된 바와 같이 외측실린더튜브(30)의 오일포트 "32a"를 개방해 오일배출통로를 형성한 상태에서 유압펌프로부터 오일포트 "32b"로 오일을 압송하게 되면, 외측실린더튜브(30)의 증압실(C)로 오일이 유입되면서 내측실린더튜브(20)가 저속으로 전진하게 된다.As shown in FIGS. 1 to 3C, when the oil port “32a” of the outer cylinder tube 30 is opened and the oil discharge passage is formed, the oil is pumped from the hydraulic pump to the oil port “32b”. As the oil flows into the boosting chamber C of the outer cylinder tube 30, the inner cylinder tube 20 is advanced at a low speed.
즉, 외측실린더튜브(30)의 오일포트 "32b"로 유입되는 오일은 증압실(C)은 물론, 제 1유로(22a)를 통해서 증속실(B)로도 유입되려 하지만 증압실(C)에 비해 작은 단면적을 갖는 증속실(B)에 작용하는 유압이 증압실(C)에 비해 작기 때문에 파스칼의 원리에 의해 내측실린더튜브(20)가 전진방향으로 차동운동되면서 동시에 피스톤로드(40)도 내측실린더튜브(20)와 함께 저속으로 전진운동 된다.That is, the oil flowing into the oil port " 32b " of the outer cylinder tube 30 is not only introduced into the booster chamber C through the first passage 22a but also into the booster chamber C. Since the hydraulic pressure acting on the speed increasing chamber B having a smaller cross-sectional area is smaller than that of the pressure increasing chamber C, the inner cylinder tube 20 is differentially moved in the forward direction by the principle of Pascal, and at the same time, the piston rod 40 is also The cylinder tube 20 is moved forward with low speed.
이때 내측실린더튜브(20)가 정지되면, 도3c에 도시된 바와 같이 승강판(84)이 지면으로부터 떨어져 수평하게 되며, 증압실(C)의 튜브측피스톤(22) 단면적이 증속실(B)의 로드측피스톤(42)에 비해 크기 때문에 오일공급량에 비해 행정거리가 짧아 가장 큰 힘으로 움직이고 속도는 감속된다.At this time, when the inner cylinder tube 20 is stopped, as shown in Fig. 3c, the elevating plate 84 is horizontally separated from the ground, and the cross-sectional area of the tube side piston 22 of the booster chamber C is increased. It is larger than the rod side piston 42, so the stroke is shorter than the oil supply, so it moves with the greatest force and the speed is reduced.
이와 같은 상태에서 도4에 도시된 바와 같이 승강판(84)을 수평한 상태로 승강시키게 되면, 화물을 적재함으로 옮길 수 있게 된다.In this state, as shown in FIG. 4, when the lifting plate 84 is elevated in a horizontal state, the cargo can be moved to the loading box.
이후 리프트작업을 마치고 승강판(84)을 수직으로 세워서 접는 경우 내측실린더튜브(20)가 전진하여 멈춘 상태에서 도5a 및 도5b에 도시된 바와 같이 외측실린더튜브(30)의 오일포트 "32b"를 통해 오일을 계속해서 공급하게 되면, 외측실린더튜브(30)의 증압실(C)로 유입된 오일이 튜브측피스톤(22)에 형성되어 있는 제 1유로(22a)를 통해 내측실린더튜브(20)의 증속실(B)로 유입되면서 피스톤로드(40)가 전진하게 된다.After the lift operation, when the lifting plate 84 is folded vertically upright, the oil port "32b" of the outer cylinder tube 30 as shown in Figure 5a and 5b in the state that the inner cylinder tube 20 is stopped to move forward When the oil is continuously supplied through the oil, the oil introduced into the pressure-increasing chamber C of the outer cylinder tube 30 passes through the first flow passage 22a formed in the tube-side piston 22. Piston rod 40 is advanced as it enters the speed increase chamber (B).
이때 내측실린더튜브(20)에 설치되어 있는 리턴스프링(50)은 압축되고 피스톤로드(40)는 증속되어 내측실린더튜브(20)보다 빠른 속도로 전진하게 된다.At this time, the return spring 50 installed in the inner cylinder tube 20 is compressed and the piston rod 40 is accelerated to move forward at a higher speed than the inner cylinder tube 20.
즉, 로드측피스톤(42)의 단면적이 튜브측피스톤(22)보다 작기 때문에 오일공급량에 비해 행정거리가 길어 속도가 증속되면서 화물이 실리지 않은 승강판(84)을 빠른 속도로 세우게 된다.That is, since the cross-sectional area of the rod-side piston 42 is smaller than the tube-side piston 22, the stroke length is increased compared to the oil supply amount, so that the speed is increased and the lifting plate 84 without cargo is erected at a high speed.
이때 로드측피스톤(42)에 설치되어 있는 체크밸브(60)는 역지작용에 의해 폐쇄되어 내측실린더튜브(20)의 완충실(A)에 잔류하는 오일이 내측실린더튜브(20)의 대경측과 로드측피스톤(22) 사이에 형성되어 있는 제 3유로(21a)를 통해 흐르면서 피스톤로드(40)의 빠른 전진을 돕게 된다.At this time, the check valve 60 installed in the rod-side piston 42 is closed by the counter action, so that oil remaining in the buffer chamber A of the inner cylinder tube 20 and the large diameter side of the inner cylinder tube 20 are separated. It flows through the third flow passage 21a formed between the rod side pistons 22 to help the rapid advancement of the piston rod 40.
이후 도6a 및 도6b에 도시된 바와 같이 승강판(84)이 수직으로 세워지기 직전에 로드측피스톤(22)이 내측실린더튜브(20)의 중간에 형성되어 있는 레듀사(21)에 이르게 되면, 제 3유로(21a)가 점차적으로 좁아져 결국 폐쇄되며, 완충실(A)에 잔류하는 오일은 로드측피스톤(22)에 형성된 작은 오리피스(42b)를 통해서만 증속실(B)로 흐르게 되어 속도가 급감되고 정지위치에서의 충격이 완화된다.6A and 6B, when the rod side piston 22 reaches the red yarn 21 formed in the middle of the inner cylinder tube 20 immediately before the lifting plate 84 is vertically erected, as shown in FIGS. 6A and 6B. The third flow passage 21a gradually narrows and eventually closes, and the oil remaining in the buffer chamber A flows into the speed increasing chamber B only through the small orifice 42b formed in the rod side piston 22. Is suddenly reduced and the shock at the stop position is alleviated.
위와 같이 승강판(84)이 수직으로 세워진 상태에서 외측실린더튜브(30)의 오일포트 "32b"를 유압밸브에 의해 폐쇄하면, 승강판이 수직으로 접혀진 상태를 지속적으로 유지하게 된다.As described above, when the lifting plate 84 is vertically closed and the oil port 32b of the outer cylinder tube 30 is closed by the hydraulic valve, the lifting plate is continuously folded vertically.
한편, 리프트(80)의 승강판(84)이 수직으로 접혀진 상태에서 사용을 위해 수평으로 펼치는 경우 닫힌 외측실린더튜브(30)의 오일포트 "32b"에 설치된 유압밸브를 개방하게 되면, 도7에 도시된 바와 같이 리턴스프링(50)이 탄성복원력에 의해 신장되면서 체크밸브(60)가 개방되어 내측실린더튜브(20)의 완충실(A)로부터 증속실(B)로 이어지는 제 2유로(42a)가 개방되면서 피스톤로드(40)가 전진할 때보다 더 빠른 속도로 복귀하게 된다.On the other hand, when the lifting plate 84 of the lift 80 unfolds horizontally for use in a vertically folded state, opening the hydraulic valve installed in the oil port "32b" of the closed outer cylinder tube 30, Figure 7 As shown in the drawing, as the return spring 50 is extended by the elastic restoring force, the check valve 60 is opened to extend from the buffer chamber A of the inner cylinder tube 20 to the speed increasing chamber B. As the piston is opened, the piston rod 40 returns to a faster speed than when it is advanced.
즉, 피스톤로드(40)의 복귀시 오일의 리턴통로는 매우 작은 크기의 오리피스(42b)가 아닌 체크밸브(60)에 의해 개방된 비교적 큰 제 2유로(42a)가 되어 피스톤로드(40)의 전진시보다 후퇴시에 유량이 증가하여 피스톤로드(40)가 빠르게 후퇴하게 되며, 승강판(84)은 매우 빠르게 펼쳐지게 된다.That is, when the piston rod 40 returns, the oil return passage becomes a relatively large second passage 42a opened by the check valve 60 rather than an orifice 42b of a very small size, so that the piston rod 40 The flow rate increases at the time of retraction than at the time of advancement, so that the piston rod 40 retreats quickly, and the lifting plate 84 is unfolded very quickly.
이상에서 설명한 바와 같은 본 고안은 리프트의 승강판 각도에 따라 각각 다른 속도로 변속하도록 구성되어 있기 때문에 유압구동유닛의 용량을 낮출 수 있는 효과가 있으며, 승강판이 수직으로 세워지기 직전 정지위치에서 완충하도록 구성되어 있기 때문에 과부하에 의한 유압장치의 손상을 방지하고, 소음 및 진동발생을 크게 줄여 진동에 민감한 화물의 운반이 가능하게 되며, 작업시간을 크게 단축할 수 있는 효과가 있다.The present invention as described above has the effect of reducing the capacity of the hydraulic drive unit because it is configured to shift at different speeds according to the angle of the lifting plate of the lift, so as to cushion the stopping plate immediately before the lifting plate is erected vertically. Because it is configured to prevent damage to the hydraulic system due to overload, it is possible to transport the vibration-sensitive cargo by greatly reducing the occurrence of noise and vibration, it is possible to significantly shorten the working time.
도 1은 본 고안에 따른 리프트용 틸팅실린더를 보인 단면도1 is a cross-sectional view showing a tilting cylinder for a lift according to the present invention
도 2a는 본 고안에 따른 승강판 끝이 지면에 접촉되어 있을 때 틸팅실린더를 보인 단면도Figure 2a is a cross-sectional view showing the tilting cylinder when the lifting plate end in contact with the ground according to the present invention
도 2b는 본 고안에 따른 승강판 끝이 지면에 접촉된 것을 개략적으로 보인 모형도Figure 2b is a schematic view showing that the end of the lifting plate according to the present invention in contact with the ground
도 3a는 본 고안에 따른 승강판을 지면으로부터 들어올릴 때 틸팅실린더의 작동을 보인 단면도Figure 3a is a cross-sectional view showing the operation of the tilting cylinder when lifting the lifting plate according to the present invention from the ground
도 3b는 도3a의 상태로부터 승강판이 수평하게 정지하였을 때 틸팅실린더를 보인 단면도3B is a cross-sectional view showing the tilting cylinder when the lifting plate is stopped horizontally from the state of FIG. 3A.
도 3c는 본 고안에 따른 승강판이 수평하게 위치결정된 것을 개략적으로 보인 모형도Figure 3c is a schematic view showing the lifting plate is positioned horizontally according to the present invention horizontally
도 4는 본 고안에 따른 승강판이 도3c의 상태로부터 상승한 것을 개략적으로 보인 모형도Figure 4 is a schematic view showing that the lifting plate according to the present invention is raised from the state of Figure 3c
도 5a는 본 고안에 따른 승강판을 수직으로 접을 때 틸팅실린더의 작동을 보인 단면도Figure 5a is a cross-sectional view showing the operation of the tilting cylinder when vertically folding the lifting plate according to the present invention
도 5b는 본 고안에 따른 승강판이 수직으로 접혀지는 동작을 개략적으로 보인 모형도Figure 5b is a schematic diagram showing the operation of the lifting plate vertically folded according to the present invention
도 6a는 본 고안에 따른 승강판이 수직위치에서 정지할 때 틸팅실린더에 완충유로가 형성되는 것을 보인 단면도Figure 6a is a cross-sectional view showing that the buffer passage is formed in the tilting cylinder when the lifting plate is stopped in the vertical position according to the present invention
도 6b는 본 고안에 따른 승강판이 수직위치로 접혀진 것을 개략적으로 보인 모형도Figure 6b is a schematic view showing a lifting plate folded in a vertical position according to the present invention
도 7은 본 고안에 따른 틸팅실린더가 리턴스프링에 의해 복귀하는 것을 보인 단면도7 is a cross-sectional view showing that the tilting cylinder in accordance with the present invention is returned by the return spring
* 도면의 주요부분에 대한 부호 설명 *Explanation of symbols on the main parts of the drawings
20 : 내측실린더튜브 21 : 레듀사20: inner cylinder tube 21: Redusa
21a : 제 3유로 G : 소정간격21a: 3rd euro G: predetermined interval
22 : 튜브측피스톤 22a : 제 1유로22 tube side piston 22a first flow path
30 : 외측실린더튜브 32a,32b : 오일포트30: outer cylinder tube 32a, 32b: oil port
40 : 피스톤로드 42 : 로드측피스톤40: piston rod 42: rod side piston
42a : 제 2유로 42b : 오리피스42a: second euro 42b: orifice
50 : 리턴스프링 60 : 체크밸브50: return spring 60: check valve
A : 완충실 B : 증속실A: buffer chamber B: speed increasing chamber
C : 증압실C: booster chamber
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2005-0019667U KR200397648Y1 (en) | 2005-07-06 | 2005-07-06 | Tilting Cylinder for Lift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2005-0019667U KR200397648Y1 (en) | 2005-07-06 | 2005-07-06 | Tilting Cylinder for Lift |
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| Publication Number | Publication Date |
|---|---|
| KR200397648Y1 true KR200397648Y1 (en) | 2005-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR20-2005-0019667U KR200397648Y1 (en) | 2005-07-06 | 2005-07-06 | Tilting Cylinder for Lift |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102422044B1 (en) * | 2022-03-23 | 2022-07-19 | 하이드로텍(주) | Automatic Balance Lift Gate for Special Vehicle |
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2005
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102422044B1 (en) * | 2022-03-23 | 2022-07-19 | 하이드로텍(주) | Automatic Balance Lift Gate for Special Vehicle |
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