KR0132034Y1 - Apparatus for increasing the lifting speed of boom in heavy machine - Google Patents
Apparatus for increasing the lifting speed of boom in heavy machine Download PDFInfo
- Publication number
- KR0132034Y1 KR0132034Y1 KR2019950054942U KR19950054942U KR0132034Y1 KR 0132034 Y1 KR0132034 Y1 KR 0132034Y1 KR 2019950054942 U KR2019950054942 U KR 2019950054942U KR 19950054942 U KR19950054942 U KR 19950054942U KR 0132034 Y1 KR0132034 Y1 KR 0132034Y1
- Authority
- KR
- South Korea
- Prior art keywords
- boom
- line
- boom cylinder
- solenoid valve
- oil
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
- E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
- E02F3/431—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
- E02F3/422—Drive systems for bucket-arms, front-end loaders, dumpers or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
본 고안은 중장비의 설치된 붐을 상승작동시키는 경우, 이 붐의 상승속도를 증대시킬 수 있도록 한 장치에 관한 것으로, 붐실린더의 피스톤로드측에서 귀환하는 오일이 통과하게 되는 귀환라인(6)에 드레인라인(8)이 병렬 연결되고, 이 드레인라인(8)에 붐실린더헤드측으로 압유가 공급될 때 라인(8)을 개방시키도록 작동되는 솔레노이드밸브(9)가 설치되며, 이 솔레노이드밸브(9)가 오일탱크(7)와 연결되는 한편, 상기 솔레노이드밸브(9)와 전원(12)사이에 공급라인(4)의 압력에 의해 작동되는 압력스위치(10)및 수동절환스위치(11)가 병렬설치된 구조로 이루어져, 붐실린더를 상승작동시킴에 따라 공급라인(4)에 압력이 증가하거나 수동으로 작동시키는 경우에 붐실린더에서 귀환하는 오일이 오일 탱크로 직접 드레인 되게하여 배압을 줄여줌으로써, 붐상승속도를 증대시킬 수 있도록 한 것이다.The present invention relates to a device that can increase the speed of raising the boom when operating the boom installed in heavy equipment, drain to the return line (6) through which oil returning from the piston rod side of the boom cylinder The line 8 is connected in parallel, and the drain line 8 is provided with a solenoid valve 9 which is operated to open the line 8 when the hydraulic oil is supplied to the boom cylinder head side, and the solenoid valve 9 is provided. Is connected to the oil tank (7), while the pressure switch (10) and the manual switching switch (11) operated by the pressure of the supply line (4) between the solenoid valve (9) and the power supply (12) are installed in parallel. As the pressure increases in the supply line 4 or the manual operation of the boom cylinder is carried out by raising the boom cylinder, the oil returned from the boom cylinder is directly drained into the oil tank to reduce the back pressure, thereby increasing the boom up speed. It is the one to be increased.
Description
제1도는 본 고안을 휠로드의 작동유압시스템에 적용시킨 상태의 유압회로 구성도.1 is a hydraulic circuit configuration of the present invention is applied to the operating hydraulic system of the wheel rod.
제2도는 종래의 휠로드에서 사용되는 유압회로의 구성도이다.2 is a configuration diagram of a hydraulic circuit used in a conventional wheel rod.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 펌프 2 : 컨트롤밸브1: Pump 2: Control Valve
3 : 붐스푸울 4 : 공급라인3: boom spun 4: supply line
5 : 붐실린더 6 : 귀환라인5: boom cylinder 6: return line
7 : 오일탱크 8 : 드레인라인7: oil tank 8: drain line
9 : 솔레노이드밸브 10 : 압력스위치9: solenoid valve 10: pressure switch
11 : 수동절환스위치 12 : 전원11: Manual Switch 12: Power
본 고안은 붐을 갖춘 중장비의 붐상승속도 증대장치에 관한 것으로, 특히 휠 로드의 붐상승속도를 증대시키기위한 장치에 관한 것이다.The present invention relates to a device for increasing the boom speed of heavy equipment equipped with a boom, and more particularly to a device for increasing the boom speed of the wheel rod.
일반적으로 휠로드와 같이 붐을 구비한 중장비에서는, 중장비에 구비된 다른 작업기보다 붐의 작동속도가 느리는 문제점이 있다.In general, in the heavy equipment provided with a boom, such as a wheel rod, there is a problem that the operation speed of the boom is slower than other work machines provided in the heavy equipment.
에컨대 휠로드와 같은 중장비에서는 그 작업특성상 작업사이클타임에서 붐의 상승속도가 가장 중요한데, 휠로드의 총 작업사이클 타임을 보면, 통상 붐 상승속도에 소요되는 시간이 6∼7초, 붐 하강에 소요되는 시간이 3초, 버켓덤프에 소요되는 시간이 1∼1,5초 로서, 붐작동시간이 전체작업시간의 60∼70%를 차지하므로, 휠로드의 작업효율을 개선시키기 위해서는 붐 상승속도를 개선시키는 것이 필수적이기는 하나, 근본적으로 펌프유량을 증대시키지 않고서는 이러한 개선이 불가능하고, 펌프유량을 증대시키고자 하는 경우에는 엔진의 용량도 증대시켜야 하므로 어려움이 많다.For example, in heavy equipment such as wheel rods, the speed of the boom is the most important in the working cycle time because of the nature of the work. The total work cycle time of the wheel rod is typically 6 to 7 seconds for the boom up speed. It takes 3 seconds and 1 ~ 5 seconds for the bucket dump, and the boom operation time accounts for 60 ~ 70% of the total work time. Although it is essential to improve the flow rate, it is impossible to improve the flow rate without increasing the pump flow rate. In order to increase the pump flow rate, it is difficult to increase the engine capacity.
이와 같이 붐의 상승속도가 느리게 되는 이유는, 일반적으로 휠로다에서 붐을 작동시키는 실린더에 압유를 공급시키는 유압시스템이, 제2도에 도시된 바와 같이, 펌프(1)에서 가압된 압유가 컨트롤밸브(2)의 붐스푸울(3)과 공급라인(4)을 통해서 붐실린더(5)로 공급되어져, 이 붐실린더(5)를 작동시키게 되어 있는 바, 붐을 상승시키고자 하는 경우에는 압유가 붐실린더(5)의 헤드측으로 공급되고 실린더로드측의 압유는 귀환라인(6)을 통해서 다시 붐스푸울(3)을 거쳐서 오일탱크(7)로 드레인되게 되어 있기 때문에, 상기한 바와 같이 귀환오일이 붐스푸울(3)을 거치면서 통상 10∼15 bar 정도의 배압을 받게 되고, 이 배압으로 인해 실린더피스톤이 상승하는데 방해를 받게 되기 때문인 것이다.The reason why the ascending speed of the boom is slow is that the hydraulic system for supplying the hydraulic oil to the cylinder for operating the boom in the wheel loader is generally controlled by the hydraulic oil pressurized by the pump 1, as shown in FIG. The boom cylinder (5) is supplied through the boom spring (3) and the supply line (4) of the valve (2) to operate the boom cylinder (5). Since the oil supplied to the head side of the boom cylinder 5 and the cylinder rod side is drained back to the oil tank 7 via the boom spring 3 through the return line 6, the return oil as described above This is because the back pressure of the boom spun (3) is usually about 10 to 15 bar, and the back pressure prevents the cylinder piston from rising.
따라서, 작동유효차압이 떨어져 유압효율도 그 만큼 좋지 않게 되는 것이다.Therefore, the effective effective differential pressure falls, so that the hydraulic efficiency is not so good.
이에 본 고안은 상기한 바와 같은 문제를 해소시켜, 붐을 상승 시킬 때 붐실린더의 로드측에서 귀환라인을 통해 배출되는 압유가 직접 오일탱크로 드레인되게하여 배압을 받지 않도록 하므로써, 붐의 상승속도가 느려지지 않도록 한 중장비의 붐상승속도 증대장치를 제공하는데 그 목적이 있다.Therefore, the present invention solves the above problems, so that when the boom is raised, the pressure oil discharged through the return line at the rod side of the boom cylinder is directly drained to the oil tank so that the back pressure is not received, thereby increasing the speed of the boom. The purpose of the present invention is to provide a device for increasing the speed of boom up of heavy equipment so as not to slow down.
상기한 바의 목적을 달성하기 위한 본 고안은, 붐을 승강시키는 붐실린더의 피스톤로드측과 연결된 라인에 드레인 라인을 분기시키고, 이 드레인라인에 솔레노이드에 의해 온/오프되는 솔레노이드밸브를 설치한 구조로 되어 있다.The present invention for achieving the above object is a structure in which a drain line is branched to a line connected to the piston rod side of a boom cylinder for elevating a boom, and a solenoid valve on / off by a solenoid is provided on the drain line. It is.
이러한 구조로 이루어진 본 고안은, 붐실린더의 헤드측으로 압유가 공급될 때 상기 솔레노이드밸브가 온 작동되어 드레인라인을 개방시키므로써, 실린더로드측에 배압이 걸리지 않게하여 붐상승속도를 중대시킬 수가 있게 되는 것이다.The present invention having such a structure allows the solenoid valve to be turned on when the hydraulic oil is supplied to the head of the boom cylinder to open the drain line, thereby preventing the back pressure from being applied to the cylinder rod side, thereby increasing the boom rising speed. will be.
이하 본 고안을 첨부한 예시도면을 참조하여 자세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
제1도는 본 고안에 따른 장치를 구성하는 유압회로도를 나타낸 것으로서, 펌프(1)에서 가압된 압유가 컨트롤밸브(2)의 붐스푸울(3)과 공급라인(4)을 통해서 붐실린더(5)로 공급되어져, 이 붐실린더(5)를 작동시키게 되는데, 붐을 상승시키고자 하는 경우에는 압유가 붐실린더(5)의 헤드측으로 공급되고 실린더로드측의 압유는 귀환라인(6)을 통해서 다시 붐스푸울(3)을 거쳐서 오일탱크(7)로 드레인되게 되어 있다.1 is a hydraulic circuit diagram constituting an apparatus according to the present invention, the pressurized oil pressurized by the pump (1) through the boom spring (3) and the supply line (4) of the control valve (2) boom cylinder (5) The boom cylinder (5) is operated, and when the boom is to be raised, the hydraulic oil is supplied to the head side of the boom cylinder (5) and the hydraulic oil on the cylinder rod side is again boomed through the return line (6). It is to be drained to the oil tank 7 via the pool 3.
그리고, 상기 귀환라인(6)에 드레인라인(8)이 연결되고, 이 드레인라인(8)에 붐실린더헤드측으로 압유가 공급될 때 라인(8)을 개방시키도록 작동되는 솔레노이드밸브(9)가 설치되며, 이 솔레노이드밸브(9)가 오일탱크(7)와 연결된 구조로 되어 있다.Then, the drain line 8 is connected to the return line 6, and the solenoid valve 9 is operated to open the line 8 when the hydraulic oil is supplied to the drain line 8 to the boom cylinder head side. The solenoid valve 9 is connected to the oil tank 7.
한편, 붐실린더헤드측으로 압유가 공급될 때 상기 솔레노이드밸브가 작동되게 하는 시스템으로서는, 붐 실린더 헤드측으로 압유를 공급하는 공급라인(4)에 압력스위치(10)를 설치하고, 이 압력스위치(10)를 상기 솔레노이드밸브(9)의 솔레노이드와 전기적으로 연결시킨 구조로 하여, 상기 공급라인(4)에 소정이상의 압력이 가해지면 압력스위치(10)가 전기적으로 온되면서 솔레노이드밸브(9)를 개방작동시키게 할 수가 있다.On the other hand, as a system for operating the solenoid valve when the hydraulic oil is supplied to the boom cylinder head side, the pressure switch 10 is provided in the supply line 4 for supplying the hydraulic oil to the boom cylinder head side, the pressure switch 10 Is electrically connected to the solenoid of the solenoid valve (9). When a predetermined pressure is applied to the supply line (4), the pressure switch (10) is electrically turned on to open the solenoid valve (9). You can do it.
또한, 상기 압력스위치(10)에 부가하여 수동으로 작동되는 수동 절환 스위치(11)를 병렬설치하여, 상기 압력스위치(10)가 작동하지 않는 경우에도 운전자가 임의로 수동절환스위치(11)를 작동시켜서 상기 솔레노이드밸브(9)가 온작동되게 할 수가 있다.In addition, in addition to the pressure switch 10 to manually operate the manual switching switch 11 in parallel, even if the pressure switch 10 does not operate, the driver arbitrarily operates the manual switching switch 11 The solenoid valve 9 can be turned on.
이러한 구조로 이루어진 본 고안의 장치는, 붐을 상승시키기 위해 붐실린더(5)의 헤드측으로 압유를 공급하면 공급라인(4)의 압력이 증가하게 되고, 이 압력이 상기 압력스위치(10)에 전달되어지며, 전원(12)에서부터 전류가 상기 솔레노이드밸브(9)로 인가되게 되어 드레인라인(8)을 개방시키게 된다.In the apparatus of the present invention having such a structure, when the pressure oil is supplied to the head side of the boom cylinder 5 to raise the boom, the pressure of the supply line 4 increases, and the pressure is transmitted to the pressure switch 10. The electric current from the power supply 12 is applied to the solenoid valve 9 to open the drain line 8.
따라서, 붐실린더(5)가 상승작동하면서 붐실린더(5)의 로드측에서 부터 배출되는 압유가 귀환라인(6)과 드레인라인(8)및 솔레노이드밸브(9)를 통해서 오일탱크(7)에 직접 드레인되게 되므로, 붐실린더(5)의 피스톤이 상승작동하는데 귀환라인(6)쪽에서 배압이 걸리지 않게 되는 것이다.Therefore, the hydraulic oil discharged from the rod side of the boom cylinder 5 while the boom cylinder 5 is operated up to the oil tank 7 through the return line 6, the drain line 8 and the solenoid valve 9 Since it is directly drained, the back pressure of the piston of the boom cylinder (5) is to be lifted up so that the back pressure is not applied to the side.
그러므로, 붐실린더(5)가 부드럽게 빠르게 상승할 수가 있게 되어 붐의 상승작동속도를 증가시켜 줄 수 있게 되는 것이다.Therefore, the boom cylinder 5 is able to ascend smoothly and quickly to increase the operation speed of the boom.
한편, 상기한 바와 같이 압력스위치(10)에 부가하여 수동절환스위치(11)를 병렬설치한 경우에는, 공급라인의 압력이 압력스위치(10)에 세팅시킨 압력이하인 상태에서도 이 수동절환스위치(11)를 작동시키므로써, 붐실린더(5)의 작동속도를 빠르게 변환시킬 수가 있게 된다.On the other hand, in the case where the manual changeover switch 11 is installed in parallel with the pressure switch 10 as described above, the manual changeover switch 11 even when the pressure in the supply line is equal to or lower than the pressure set in the pressure switch 10. By operating), it is possible to quickly change the operating speed of the boom cylinder (5).
이상에서 설명한 바와 같이 본 고안에 따른 장치에서는 붐실린더의 로드측과 연결된 라인에 드레인라인(8)을 분기시키고, 이 드레인라인(8)에 회로를 개폐시키는 솔레노이드밸브(9)를 설치함과 더불어, 이 솔레노이드밸브(9)를 오일탱크(7)과 직접연결시키므로써, 상기 솔레노이드밸브(9)가 붐실린더를 상승시키는 경우에 자동적으로 드레인라인(8)을 개방작동시키게 하거나, 상기 솔레노이드밸브(9)가 수동으로 절환작동되게 하므로써, 붐실린더로드측에서 배출되는 압유가 배압을 받지 않고 쉽게 드레인되게하여 붐실린더의 상승속도를 향상시킬 수 있게 되는 것이다.As described above, in the apparatus according to the present invention, the drain line 8 is branched at a line connected to the rod side of the boom cylinder, and the solenoid valve 9 for opening and closing the circuit is installed at the drain line 8. By directly connecting the solenoid valve 9 with the oil tank 7, the solenoid valve 9 automatically opens the drain line 8 when the boom cylinder is raised, or the solenoid valve ( By manually switching 9), the oil pressure discharged from the boom cylinder rod side can be easily drained without receiving back pressure, thereby increasing the speed of raising the boom cylinder.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019950054942U KR0132034Y1 (en) | 1995-12-30 | 1995-12-30 | Apparatus for increasing the lifting speed of boom in heavy machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019950054942U KR0132034Y1 (en) | 1995-12-30 | 1995-12-30 | Apparatus for increasing the lifting speed of boom in heavy machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970039415U KR970039415U (en) | 1997-07-29 |
| KR0132034Y1 true KR0132034Y1 (en) | 1998-12-15 |
Family
ID=19443455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019950054942U KR0132034Y1 (en) | 1995-12-30 | 1995-12-30 | Apparatus for increasing the lifting speed of boom in heavy machine |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0132034Y1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100605012B1 (en) * | 2004-12-29 | 2006-07-28 | 두산인프라코어 주식회사 | Device for draining residual oil pressure from pressure oil line for driving attachment in a skid steer loader |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100473238B1 (en) * | 1997-12-26 | 2005-06-10 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | Hydraulic system for construction machinery and its control method |
-
1995
- 1995-12-30 KR KR2019950054942U patent/KR0132034Y1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100605012B1 (en) * | 2004-12-29 | 2006-07-28 | 두산인프라코어 주식회사 | Device for draining residual oil pressure from pressure oil line for driving attachment in a skid steer loader |
Also Published As
| Publication number | Publication date |
|---|---|
| KR970039415U (en) | 1997-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100665358B1 (en) | Mobile handling device | |
| EP0436740A4 (en) | Linear excavation control apparatus in hydraulic excavator | |
| US4230304A (en) | Arrangement to obtain equal travel of hydraulic cylinders | |
| US3990583A (en) | Device for controlling the boom elevation of a side crane | |
| EP2265773A1 (en) | Hydraulic valve device | |
| KR920701694A (en) | Hydraulic hydraulic circuit device of working cylinder | |
| KR0132034Y1 (en) | Apparatus for increasing the lifting speed of boom in heavy machine | |
| JP2004068975A (en) | Construction machine | |
| KR100592545B1 (en) | An apparatus for controlling a boom down in an excavator | |
| KR920005489B1 (en) | Oil pressure control device of boom cylinder in construction machine | |
| KR200333340Y1 (en) | Boom emergency lowering device of excavator | |
| CN217582652U (en) | Staircase system and engineering machinery | |
| KR200389671Y1 (en) | Apparatus for reducing shock on the bucket of wheel typed loader in float down mode | |
| KR0131980Y1 (en) | Two step relief hydraulic circuit apparatus for a heavy machine | |
| SU1666666A1 (en) | Hydraulics of loader working equipment | |
| CN113677857B (en) | Hydraulic machine | |
| KR940000180Y1 (en) | Oil-pressure control circuit for out-trigger cylinder in wheel type excavator | |
| SU1617104A2 (en) | Ripper hydraulic drive | |
| KR930001532Y1 (en) | Oil pressure control device for bulldozer | |
| RU2095523C1 (en) | Hydraulic drive of excavator boom | |
| JP3707935B2 (en) | Hydraulic circuit for boom cylinder of hydraulic excavator | |
| SU1490235A1 (en) | Hydraulic drive for control of working equipment of front-end loader | |
| KR200168770Y1 (en) | An apparatus for controlling high/low speed of the winch in crane car | |
| KR970000170Y1 (en) | Oil pressure control device for construction machine | |
| SU1395774A1 (en) | Hydraulic drive of loader working equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E701 | Decision to grant or registration of patent right | ||
| REGI | Registration of establishment | ||
| FPAY | Annual fee payment |
Payment date: 20010702 Year of fee payment: 6 |
|
| LAPS | Lapse due to unpaid annual fee |