WO2016159482A1 - Hydraulic cylinder integrally comprising booster pump - Google Patents

Hydraulic cylinder integrally comprising booster pump Download PDF

Info

Publication number
WO2016159482A1
WO2016159482A1 PCT/KR2015/013514 KR2015013514W WO2016159482A1 WO 2016159482 A1 WO2016159482 A1 WO 2016159482A1 KR 2015013514 W KR2015013514 W KR 2015013514W WO 2016159482 A1 WO2016159482 A1 WO 2016159482A1
Authority
WO
WIPO (PCT)
Prior art keywords
pneumatic
hydraulic
passage
operation chamber
piston
Prior art date
Application number
PCT/KR2015/013514
Other languages
French (fr)
Korean (ko)
Inventor
주재석
Original Assignee
주식회사 하이시스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 하이시스 filed Critical 주식회사 하이시스
Priority to JP2017551714A priority Critical patent/JP6649400B2/en
Priority to CN201580080426.5A priority patent/CN107660258B/en
Publication of WO2016159482A1 publication Critical patent/WO2016159482A1/en

Links

Images

Classifications

    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • 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
    • 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

Definitions

  • the present invention relates to a hydraulic cylinder, in particular a hydraulic cylinder having a booster pump integrally.
  • the booster pump device has a structure in which the booster pump is attached to the hydraulic oil reservoir so that only the booster pump is operated.
  • the booster pump can be operated by only the booster pump, which may delay the piston rod operation of the cylinder and consume energy. .
  • the hydraulic pressure intensifier (Patent Document 1) is designed to advance the piston rod at high speed at low load and high output at high load, so that the piston rod pressurization is operated only once as a booster, and thus the cylinder-specific pressure should be manufactured.
  • An object of the present invention is to provide a hydraulic apparatus which is integrally provided with a booster pump which is operated at a low pressure-increasing pressure-increasing ratio of pneumatic cylinders and a booster pump having a high-pressure-increasing ratio of high-pressure boosting cylinders.
  • a lower cylinder having a first diameter hydraulic passage and a small diameter bore at an upper portion thereof adjacent to an upper side of the first hydraulic operating chamber;
  • a pressure boosting piston and a sliding piston are disposed therein, the second hydraulic operating chamber connected to the bore in fluid communication with the bore on the lower side by the sliding piston, and the second pneumatic operating chamber on the upper side, and below the second hydraulic operating chamber.
  • An upper cylinder forming a second hydraulic passage;
  • the pneumatic operation chamber has a second valve rod that opens and closes at the lower portion thereof by the contact of the ninth pneumatic passage and the pump piston, and has a first valve rod opened and closed at the upper portion thereof by the contact of the pump piston, and the third hydraulic operation chamber has a third A third hydraulic passage opened and closed by a valve and a fourth hydraulic passage opened and closed by a fourth valve, and the fourth hydraulic operating chamber is opened by a fifth hydraulic passage and a sixth valve opened and closed by a fifth valve.
  • a second body part forming a hydraulic passage; And
  • the eleventh pneumatic passage communicating with the forward pneumatic operation chamber through the first valve rod, the tenth pneumatic passage communicating with the ninth pneumatic passage, the seventh pneumatic passage helping mutual communication with the third pneumatic operation chamber, and the second A twelfth pneumatic passage communicating from the inner space of the master valve to the first valve rod, and a thirteenth pneumatic passage allowing the inflow of pneumatic pressure into the inner space of the second master valve; It is related with the hydraulic cylinder which is integrally provided with the booster pump characterized by consisting of; the second master valve to control, the second master valve is installed on the upper end of the third pneumatic operation chamber.
  • the actuating piston consists of the actuating rod, the piston ring and the guide rod.
  • the piston ring may be disposed between the first pneumatic passage and the second pneumatic passage.
  • the sliding piston is slidably disposed along the piston rod longitudinal direction of the boosting piston, and the sliding piston is spring-loaded to the boosting piston with a spring.
  • the piston rod of the pump piston is extended to allow entry and exit into the third pneumatic operation chamber, the third hydraulic operation chamber and the fourth hydraulic operation chamber.
  • the fourth hydraulic passage and the sixth hydraulic passage may be communicatively connected to the second hydraulic passage, and the third hydraulic passage and the fifth hydraulic passage may be communicatively connected to the first hydraulic passage.
  • the first valve rod has a first pressure spring
  • the second valve rod has a second pressure spring
  • the second body portion may include an eighth pneumatic passage for supplying air pressure to the second valve rod and a fourteenth pneumatic exhaust passage for exhausting air pressure through the second valve rod.
  • the upper cylinders may be arranged in line in fluid communication with the upper side of the lower cylinder.
  • the boosting piston of the upper cylinder is arranged coaxially with the working piston of the lower cylinder.
  • the upper cylinder may be arranged parallel to the lower cylinder.
  • the boosting piston of the upper cylinder is arranged in a twin axis with the working piston of the lower cylinder.
  • the fifth pneumatic passage may be provided with two check valves to be opened and closed individually according to the forward or reverse flow of the pneumatic.
  • the present invention is to provide a hydraulic cylinder that can achieve an energy saving effect by consuming only an appropriate amount of energy by operating the air pressure according to the low load and high load.
  • the present invention can be designed in a compact structure because the heat generation is less than the conventional hydraulic pump can reduce the working oil storage space.
  • the present invention is configured to continuously provide a high power to alleviate pressure pulsation.
  • FIG. 1 is a longitudinal sectional view schematically showing an internal configuration of a hydraulic cylinder having an integrated booster pump according to a preferred embodiment of the present invention.
  • Figure 2 is a longitudinal sectional view of the hydraulic cylinder according to the present invention to drive in a high speed forward operation at low loads.
  • FIG 3 is a longitudinal sectional view of the hydraulic cylinder according to the present invention for driving in a low speed forward operation at high loads.
  • Fig. 4 is a longitudinal sectional view of the hydraulic cylinder according to the present invention for driving in a low speed forward operation at high load, illustrating the advanced state of the pump piston.
  • Fig. 5 is a longitudinal sectional view of the hydraulic cylinder according to the present invention for driving in a low speed forward operation at high load, illustrating the reverse state of the pump piston.
  • Fig. 6 is a longitudinal sectional view of the hydraulic cylinder according to the present invention for driving in a low speed forward operation at high loads, illustrating the advanced state of the pump piston.
  • FIG. 7 is a longitudinal sectional view illustrating the reverse operation of the hydraulic cylinder according to the present invention.
  • FIG. 8 is a longitudinal sectional view of a hydraulic cylinder according to another embodiment of the present invention.
  • the hydraulic cylinder integrally provided with a booster pump has the following configuration.
  • the hydraulic cylinder according to a preferred embodiment of the present invention is installed side by side in fluid communication with the first body portion (without reference numeral) partitioned into an upper cylinder and a lower cylinder, the first body portion It consists of the 2nd main-body part 30, ie, a booster pump.
  • the first main body divides the cylinder up and down
  • in the upper cylinder 20 is installed a boosting piston (P2) with a spring (S) is mounted
  • the operating piston (P1) is installed in the lower cylinder (10) Doing.
  • the actuating piston P1 and the boosting piston P2 are coaxially arranged to arrange the lower cylinder 10 and the upper cylinder 20 in a line.
  • the lower cylinder 10 forms a first pneumatic operation chamber 110 at the lower side and a first hydraulic operation chamber 120 at the upper side thereof, and has a small diameter bore 121 thereon.
  • the lower cylinder 10 is formed between the first pneumatic passage H1 adjacent to the lower side, the first hydraulic passage W1 adjacent to the upper side, and between the first pneumatic passage H1 and the first hydraulic passage W1.
  • 2 Form a pneumatic passage (H2).
  • the actuation piston P1 has an actuation rod P1-1, a piston ring P1-2 and a guide rod P1-3.
  • the piston ring P1-2 is arranged between the first pneumatic passage H1 and the second pneumatic passage H2.
  • the first pneumatic operation chamber 110 forms a reverse pneumatic operation chamber 110a in the lower portion and a forward pneumatic operation chamber 110b in the upper portion by the piston ring P1-2. That is, the first pneumatic passage H1 communicates with the reverse pneumatic operation chamber 110a, and the second pneumatic passage H2 communicates with the forward pneumatic operation chamber 110b. Of course, the first hydraulic passage W1 is in communication with the first hydraulic operation chamber 120.
  • the upper cylinder 20 is disposed above the lower cylinder 10, and is installed in fluid communication via the bore 121 of the lower cylinder 10.
  • the upper cylinder 20 has a boosting piston P2 disposed therein as shown in the drawing, a second hydraulic operating chamber 220 formed at a lower portion thereof, and a second pneumatic operating chamber 210 formed at an upper portion thereof.
  • the second hydraulic operation chamber 220 and the second pneumatic operation chamber 210 are partitioned by a sliding piston P3.
  • the second hydraulic passage W2 communicates with the second hydraulic operation chamber 220, and is disposed below the bottom dead center of the sliding piston P3.
  • the upper cylinder 20 has a boosting piston P2 in an inner space defining the second pneumatic operating chamber 210 and the second hydraulic operating chamber 220 as described above, and the boosting piston P2 is lowered.
  • the piston rod P2-1 has an extended length, and the piston rod P2-1 penetrates the bore 121 of the lower cylinder 10 to operate the first hydraulic actuation chamber 120 and the second hydraulic actuation. Allows entry of the seal 220.
  • the free end of the piston rod P2-1 may allow access into the guide rod P1-3 of the actuation piston P1.
  • the piston rod P2-1 has a slidable piston P3 slidable along the longitudinal direction of the piston rod P2-1, the slidable piston P3 through the spring S It is provided in the boosting piston P2.
  • the upper end of the upper cylinder 20 is provided with a first master valve 250 to control the injection and / or discharge of the flow of pneumatic to the second pneumatic operation chamber (210).
  • the first master valve 250 may control the flow of pneumatic pressure by means of the first valve spool 260 therein.
  • the first master valve 250 includes a third pneumatic passage H3, a fourth pneumatic exhaust passage H4, and a sixth pneumatic passage H6, which are selectively opened and closed through the first valve spline 260, and A fifth pneumatic passage (H5) is opened and closed by two check valves (261, 262).
  • the fifth pneumatic passage H5 of the first master valve 250 includes two check valves 261 and 262 to be opened and closed individually according to the flow direction (forward and reverse) of the pneumatic fluid.
  • One master valve 250 opens the second check valve 262 and closes the first check valve 261 so as to enable forward flow of the internal pneumatic pressure to the outside.
  • the second check valve 262 may be closed and the first check valve 261 may be opened to allow a reverse flow flowing into the inner space of the valve.
  • the sixth pneumatic passage H6 is formed to communicate between the first master valve 250 and the second pneumatic operation chamber 210.
  • the second body part 30 is installed side by side in fluid communication with the first body part including the first hydraulic operation chamber 120 and the second hydraulic operation chamber 220, the third pneumatic operation chamber 310 And a third hydraulic operation chamber 320 and a fourth hydraulic operation chamber 330.
  • the third pneumatic operation chamber 310 forms a reverse pneumatic operation chamber 310a in the lower portion and a forward pneumatic operation chamber 310b in the upper portion by the pump piston P4. That is, the ninth pneumatic passage H9 communicates with the reverse pneumatic operation chamber 310a, and the eleventh pneumatic passage H11 communicates with the forward pneumatic operation chamber 310b.
  • the second body part 30 arranges the pump piston P4 in an internal space defined by the third pneumatic operation chamber 310, the third hydraulic operation chamber 320, and the fourth hydraulic operation chamber 330.
  • P4 has a piston rod P4-1 extending in the lower portion to allow the third pneumatic operation chamber 310, the third hydraulic operation chamber 320, and the fourth hydraulic operation chamber 330 to enter and exit. .
  • the free end of the piston rod (P4-1) is to be extended in length to penetrate the fourth hydraulic operation chamber (330).
  • the upper end of the second body portion 30 is provided with a second master valve 350 to control the injection and / or discharge of the flow of pneumatic to the third pneumatic operation chamber (310).
  • the second master valve 350 has a seventh pneumatic passage H7, a tenth pneumatic passage H10, an eleventh pneumatic passage H11, and a twelfth pneumatic pressure by means of the second valve spool 360 therein.
  • the passage H12 and the thirteenth pneumatic passage H13 are selectively opened and closed to control the flow of pneumatic pressure.
  • the second master valve 350 is also provided with a first valve rod 370 disposed above the third pneumatic operation chamber 310 and openable by pressurization according to the reverse driving of the pump piston P4.
  • the rod 370 is interposed between the seventh pneumatic passage H7, the twelfth pneumatic passage H12, and the upper side of the third pneumatic operation chamber 310.
  • the first valve rod 370 is equipped with a first pressurizing spring 371 at the upper end thereof, and the pneumatic flows through the seventh pneumatic passage H7, the pneumatic flows through the twelfth pneumatic passage H12, or the pump piston P4.
  • the pressurization of) may allow the seventh pneumatic passage H7 and the twelfth pneumatic passage H12 to communicate with each other or close each other.
  • the second main body 30 has a second valve rod 380 disposed below the third pneumatic operation chamber 310 and openable by pressurization according to the forward driving of the pump piston P4.
  • the two-valve rod 380 is interposed between the eighth pneumatic passage H8 and the fourteenth pneumatic exhaust passage H14 and the lower side of the third pneumatic operation chamber 310.
  • the second valve rod 380 is provided with a second pressure spring 381 at the lower end thereof, and the 14th pneumatic exhaust passage (p) is pressurized by the pneumatic and / or pump piston P4 flowing into the eighth pneumatic passage H8. H14) can be opened and closed.
  • the second main body 30 may be formed on the second master valve 350 to enable fluid communication between the second master valve 350 and the reverse pneumatic operation chamber 310a of the third pneumatic operation chamber 310.
  • a ten pneumatic passage H10 is formed and a ninth pneumatic passage H9 is formed below the third pneumatic operation chamber 310.
  • the second master valve 350 may be provided with pneumatic pressure to the internal space through the thirteenth pneumatic passage H13.
  • the eleventh pneumatic passage H11 is formed to communicate with the internal space of the second master valve 350 and the pneumatic operation chamber 310b for moving forward of the third pneumatic operation chamber 310.
  • the second body part 30 forms a third hydraulic passage W3 and a fourth hydraulic passage W4 for ensuring the flow of hydraulic oil in the third hydraulic operating chamber 320 and the fourth hydraulic operating chamber 330.
  • the fifth hydraulic passage (W5) and the sixth hydraulic passage (W6) to ensure the flow in and out of the hydraulic fluid is formed.
  • the hydraulic cylinder according to the present invention includes a fourth check valve 322 between the second hydraulic passage W2 of the second hydraulic operating chamber 220 and the fourth hydraulic passage W4 of the third hydraulic operating chamber 320.
  • the arrangement may open and close the second hydraulic operation chamber 220 and the third hydraulic operation chamber 320 to be in fluid communication.
  • the hydraulic cylinder according to the present invention includes a sixth valve 332 between the second hydraulic passage W2 of the second hydraulic operating chamber 220 and the sixth hydraulic passage W6 of the fourth hydraulic operating chamber 330. ) May be arranged to open and close the second hydraulic operation chamber 220 and the fourth hydraulic operation chamber 330 in fluid communication.
  • the hydraulic cylinder according to the present invention includes a third check valve 321 between the first hydraulic passage W1 of the first hydraulic operating chamber 120 and the third hydraulic passage W3 of the third hydraulic operating chamber 320.
  • the first hydraulic operation chamber 120 and the third hydraulic operation chamber 320 may be opened and closed to allow fluid communication.
  • the hydraulic cylinder according to the present invention includes a fifth valve 331 between the first hydraulic passage W1 of the first hydraulic operating chamber 120 and the fifth hydraulic passage W5 of the fourth hydraulic operating chamber 330. ) May be arranged to open and close the first hydraulic operation chamber 120 and the fourth hydraulic operation chamber 330 in fluid communication.
  • FIG. 1 is a view showing the interior of the hydraulic cylinder according to the present invention when the piston is retracted.
  • the reverse pneumatic flows into the reverse pneumatic operation chamber 110a of the first pneumatic operation chamber 110 through the first pneumatic passage H1 to reverse the operation piston P1, and the third pneumatic passage H3.
  • the first valve valve 260 is operated in the internal space of the first master valve 250, and the air pressure of the second pneumatic operation chamber 210 passes through the sixth pneumatic passage H6 and the fourth pneumatic exhaust passage H4. Is exhausted.
  • the boosting piston (P2) is reversed by the spring force of the spring (S).
  • Figure 2 illustrates the high-speed forward operation at low load of the hydraulic cylinder according to the present invention, the forward pneumatic operation of the forward pneumatic operation chamber 110b of the first pneumatic operation chamber 110 through the second pneumatic passage (H2) It flows in and advances the working piston P1.
  • Figure 3 illustrates the low-speed forward operation at high loads of the hydraulic cylinder according to the present invention
  • the pneumatic pressure is pushed through the first valve sprocket 260 through the fifth pneumatic passage (H5) and the first valve 261 to open. It flows into the 2nd pneumatic operation chamber 210 along the 6th pneumatic path H6 of a state.
  • the pneumatic pressure introduced into the second pneumatic operation chamber 210 advances the boosting piston P3 so that the operation piston P1 is advanced at a high speed at a low pressure.
  • Figure 4 illustrates the forward state of the pump piston in the hydraulic cylinder in a low speed forward operation state at high loads.
  • the pneumatic pressure introduced into the thirteenth pneumatic passage H13 moves the second valve splice 360 of the second master valve 350 to pass through the eleventh pneumatic passage H11, and in particular, moves forward.
  • the pneumatic pressure introduced into the forward pneumatic operation chamber 310b of the third pneumatic operation chamber 310 consequently advances the pump piston P4.
  • the air pressure inside the reverse pneumatic operation chamber 310a is exhausted to the outside through the ninth pneumatic passage H9, the tenth pneumatic passage H10, and the second valve spout 360, so that the second pressure is selectable.
  • Pneumatic pressure exiting the second main body portion beyond the valve spline 360 allows exhaust through the silencer (not indicated).
  • the hydraulic fluid of the third hydraulic operating chamber 320 flows into the first hydraulic operating chamber 120 through the third hydraulic passage W3 and the first hydraulic passage W1 to drive the operating piston P1 forward.
  • the operating oil of the second hydraulic operation chamber 220 flows to the second body portion through the second hydraulic passage W2, and opens the sixth valve 332 to be stored inside the fourth hydraulic operation chamber 330. .
  • Figure 5 illustrates the reverse state of the pump piston in the hydraulic cylinder in a low speed forward operation state at high loads.
  • the pneumatic flow introduced into the thirteenth pneumatic passage H13 moves the second valve splice 360 of the second master valve 350 to pass through the tenth pneumatic passage H10 and the ninth pneumatic passage H9 and the third pneumatic pressure. It flows into the reverse pneumatic operation chamber 310a of the operation chamber 310.
  • the pneumatic pressure introduced into the reverse pneumatic operation chamber 310a of the third pneumatic operation chamber 310 reverses the pump piston P4.
  • Fig. 6 is a longitudinal sectional view of the hydraulic cylinder according to the present invention for driving in a low speed forward operation at high loads, illustrating the advanced state of the pump piston.
  • FIG. 7 is a longitudinal sectional view illustrating the reverse operation of the hydraulic cylinder according to the present invention.
  • Hydraulic cylinder according to another embodiment of the present invention is a modification of the hydraulic cylinder shown in Figures 1 to 7, except that the configuration of the boosting piston (P2) and the operation piston (P1) arrangement is very similar structure Therefore, description of similar or identical components will be excluded here for the sake of clarity of understanding of the present invention.
  • the hydraulic cylinder according to another embodiment of the present invention by arranging the operating piston (P1) and the boosting piston (P2) in a non-coaxial or twin-axial line, the lower cylinder 10 and the upper cylinder ( 20) are arranged in parallel, not in a row.
  • the lower cylinder 10 and the upper cylinder 20 must be connected in fluid communication.
  • the hydraulic cylinder in which the lower cylinder 10 and the upper cylinder 20 are arranged side by side in parallel has an overall installation height in comparison with the first main body portion lengthwise being formed as a single one shown in FIGS. 1 to 7. This reduces energy consumption by providing a more compact structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The present invention relates to a hydraulic cylinder integrally comprising a booster pump, the hydraulic cylinder comprising: a first main body part divided into an upper cylinder and a lower cylinder such that a pressure intensifier can be operated by low air pressure during a low load; and a booster pump composed of a second main body part having a high intensification ratio during a high load, and disposed so as to enable communicative flowing with the first main body part.

Description

부스터 펌프를 일체로 구비한 유압실린더Hydraulic cylinder with integrated booster pump
본 발명은 유압실린더, 특히 부스터 펌프를 일체로 구비한 유압실린더에 관한 것이다. The present invention relates to a hydraulic cylinder, in particular a hydraulic cylinder having a booster pump integrally.
일반적으로, 부스터 펌프장치는 부스터 펌프를 작동유 저장소에 부착하여 부스터 펌프만 작동하는 구조로 이루어지는데, 저부하시도 부스터 펌프만으로 작동되어 실린더의 피스톤 로드 작동이 지체되고 에너지 소모가 많은 단점을 제공할 수 있다.In general, the booster pump device has a structure in which the booster pump is attached to the hydraulic oil reservoir so that only the booster pump is operated. However, even at a low load, the booster pump can be operated by only the booster pump, which may delay the piston rod operation of the cylinder and consume energy. .
또한, 유압식 증압기(특허문헌 1)는 저부하시 피스톤 로드를 고속 전진시키고 고부하시에는 고출력을 내도록 설계되는바, 피스톤 로드 가압을 부스터로 1회만 작동하도록 되어 실린더마다 맞춤형으로 제작해야 할 것이다.In addition, the hydraulic pressure intensifier (Patent Document 1) is designed to advance the piston rod at high speed at low load and high output at high load, so that the piston rod pressurization is operated only once as a booster, and thus the cylinder-specific pressure should be manufactured.
본 발명은 유압실린더의 저부하시 증압비가 낮은 공압으로 작동되는 부스터와 함께 유압실린더의 고부하시 증압비가 높은 부스터 펌프를 일체로 구비한 유압장치를 제공하는 것을 목적으로 한다.An object of the present invention is to provide a hydraulic apparatus which is integrally provided with a booster pump which is operated at a low pressure-increasing pressure-increasing ratio of pneumatic cylinders and a booster pump having a high-pressure-increasing ratio of high-pressure boosting cylinders.
상기 목적을 달성하기 위해서, 본 발명은,In order to achieve the above object, the present invention,
하측에 제1공압작동실과 상측에 제1유압작동실을 갖춰 그 내부에 작동 피스톤을 배치하고, 제1공압작동실의 하측에 제1공압통로와 제1공압작동실의 상측에 제2공압통로를 형성하며, 제1유압작동실의 상측에 인접하게 제1유압통로와 상부에 소직경의 보어를 구비한 하측 실린더와;It has a first pneumatic operating chamber at the lower side and a first hydraulic operating chamber at the upper side, and the actuating piston is disposed therein, and a first pneumatic passage below the first pneumatic operating chamber and a second pneumatic passage above the first pneumatic operating chamber. A lower cylinder having a first diameter hydraulic passage and a small diameter bore at an upper portion thereof adjacent to an upper side of the first hydraulic operating chamber;
그 내부에 증압 피스톤과 활주형 피스톤을 배치하는데, 활주형 피스톤에 의하여 하측에 보어와 유체연통가능하게 연결된 제2유압작동실과 상측에 제2공압작동실로 형성되고, 제2유압작동실의 하측에 제2유압통로를 형성하는 상측 실린더; A pressure boosting piston and a sliding piston are disposed therein, the second hydraulic operating chamber connected to the bore in fluid communication with the bore on the lower side by the sliding piston, and the second pneumatic operating chamber on the upper side, and below the second hydraulic operating chamber. An upper cylinder forming a second hydraulic passage;
제1공압통로에 상호 연통되는 제3공압통로와, 제2공압작동실에 상호 연통을 돕는 제6공압통로, 2개의 첵밸브로 개폐되는 제5공압통로, 및 내부 공간의 공압을 배기하는 제4공압배기통로를 형성하고, 내부 공간에 배치되어 공압의 흐름을 제어하는 제1밸브스플을 구비하며, 상측 실린더의 제2공압작동실의 상단부에 설치되는 제1마스터 밸브;A third pneumatic passage communicating with the first pneumatic passage, a sixth pneumatic passage helping mutual communication with the second pneumatic operation chamber, a fifth pneumatic passage opened and closed by two check valves, and an exhausting air pressure in the internal space; A first master valve forming a four pneumatic exhaust passage, disposed in an inner space, having a first valve spout for controlling the flow of pneumatic pressure, and installed at an upper end of a second pneumatic operation chamber of an upper cylinder;
제3공압작동실과 제3유압작동실 및 제4유압작동실을 갖춰 그 내부에 펌프 피스톤을 배치하는데, 펌프 피스톤에 의하여 하측에 후진용 공압작동실과 상측에 전진용 공압작동실로 형성되고, 제3공압작동실은 이의 하부에 제9공압통로와 펌프 피스톤의 접촉으로 개폐되는 제2밸브 로드를 구비하며 이의 상부에 펌프 피스톤의 접촉으로 개폐되는 제1밸브 로드를 구비하고, 제3유압작동실은 제3첵밸브로 개폐되는 제3유압통로과 제4첵밸브로 개폐되는 제4유압통로를 형성하며, 제4유압작동실은 제5첵밸브로 개폐되는 제5유압통로와 제6첵밸브로 개폐되는 제6유압통로를 형성하고 있는 제2본체부; 및It is equipped with a 3rd pneumatic operation chamber, a 3rd hydraulic operation chamber, and a 4th hydraulic operation chamber, and arrange | positions a pump piston inside it, and is formed by the pump piston as a reverse pneumatic operation chamber at the lower side, and a forward pneumatic operation chamber at the upper side, and 3rd The pneumatic operation chamber has a second valve rod that opens and closes at the lower portion thereof by the contact of the ninth pneumatic passage and the pump piston, and has a first valve rod opened and closed at the upper portion thereof by the contact of the pump piston, and the third hydraulic operation chamber has a third A third hydraulic passage opened and closed by a valve and a fourth hydraulic passage opened and closed by a fourth valve, and the fourth hydraulic operating chamber is opened by a fifth hydraulic passage and a sixth valve opened and closed by a fifth valve. A second body part forming a hydraulic passage; And
제1밸브 로드를 통해 전진용 공압작동실에 연통되는 제11공압통로와, 제9공압통로에 상호 연통되는 제10공압통로, 제3공압작동실에 상호 연통을 돕는 제7공압통로, 제2마스터 밸브의 내부 공간에서 제1밸브 로드까지 연통되는 제12공압통로, 및 제2마스터 밸브의 내부 공간으로 공압의 유입을 허용하는 제13공압통로를 형성하고, 내부 공간에 배치되어 공압의 흐름을 제어하는 제2밸브스플을 구비하며, 제3공압작동실의 상단부에 설치되는 제2마스터 밸브;로 이루어진 것을 특징으로 하는 부스터 펌프를 일체로 구비한 유압실린더에 관한 것이다.The eleventh pneumatic passage communicating with the forward pneumatic operation chamber through the first valve rod, the tenth pneumatic passage communicating with the ninth pneumatic passage, the seventh pneumatic passage helping mutual communication with the third pneumatic operation chamber, and the second A twelfth pneumatic passage communicating from the inner space of the master valve to the first valve rod, and a thirteenth pneumatic passage allowing the inflow of pneumatic pressure into the inner space of the second master valve; It is related with the hydraulic cylinder which is integrally provided with the booster pump characterized by consisting of; the second master valve to control, the second master valve is installed on the upper end of the third pneumatic operation chamber.
본 발명에서, 작동 피스톤은 작동로드와 피스톤 링 및 가이드 로드로 이루어져 있다.In the present invention, the actuating piston consists of the actuating rod, the piston ring and the guide rod.
피스톤 링은 제1공압통로와 제2공압통로 사이에 배치될 수 있다.The piston ring may be disposed between the first pneumatic passage and the second pneumatic passage.
활주형 피스톤은 증압 피스톤의 피스톤 로드 길이방향을 따라 활주가능하게 배치되고, 활주형 피스톤은 스프링으로 증압 피스톤에 탄발지지된다.The sliding piston is slidably disposed along the piston rod longitudinal direction of the boosting piston, and the sliding piston is spring-loaded to the boosting piston with a spring.
펌프 피스톤의 피스톤 로드는 제3공압작동실과 제3유압작동실 및 제4유압작동실의 내부로 출입을 허용할 수 있도록 신장되어 있다.The piston rod of the pump piston is extended to allow entry and exit into the third pneumatic operation chamber, the third hydraulic operation chamber and the fourth hydraulic operation chamber.
제4유압통로와 제6유압통로는 제2유압통로와 연통가능하게 연결되어 있고, 제3유압통로와 제5유압통로는 제1유압통로와 연통가능하게 연결될 수 있다.The fourth hydraulic passage and the sixth hydraulic passage may be communicatively connected to the second hydraulic passage, and the third hydraulic passage and the fifth hydraulic passage may be communicatively connected to the first hydraulic passage.
제1밸브 로드는 제1가압스프링을 구비하고, 제2밸브 로드는 제2가압스프링을 구비한다.The first valve rod has a first pressure spring, and the second valve rod has a second pressure spring.
제2본체부는 제2밸브 로드로 공압을 공급하는 제8공압통로와 제2밸브 로드를 통해 공압을 배기하는 제14공압배기통로를 구비할 수 있다.The second body portion may include an eighth pneumatic passage for supplying air pressure to the second valve rod and a fourteenth pneumatic exhaust passage for exhausting air pressure through the second valve rod.
일 실시예에서, 상측 실린더는 하측 실린더의 상측에 유체연통가능하게 일렬로 배열될 수 있다.In one embodiment, the upper cylinders may be arranged in line in fluid communication with the upper side of the lower cylinder.
즉, 상측 실린더의 증압 피스톤은 하측 실린더의 작동 피스톤과 동축선상으로 배열된다.That is, the boosting piston of the upper cylinder is arranged coaxially with the working piston of the lower cylinder.
다른 실시예에서, 상측 실린더는 하측 실린더와 평행하게 배열될 수 있다.In other embodiments, the upper cylinder may be arranged parallel to the lower cylinder.
즉, 상측 실린더의 증압 피스톤은 하측 실린더의 작동 피스톤과 쌍축선상으로 배열된다.That is, the boosting piston of the upper cylinder is arranged in a twin axis with the working piston of the lower cylinder.
제5공압통로는 공압의 순방향 또는 역방향 유동흐름에 따라 개별적으로 개폐가능하게 2개의 첵밸브를 구비할 수 있다.The fifth pneumatic passage may be provided with two check valves to be opened and closed individually according to the forward or reverse flow of the pneumatic.
본 발명의 특징 및 이점들은 첨부도면에 의거한 다음의 상세한 설명으로 더욱 명백해질 것이다.The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.
이에 앞서 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이고 사전적인 의미로 해석되어서는 아니 되며, 발명자가 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합되는 의미와 개념으로 해석되어야만 한다.Prior to this, the terms or words used in this specification and claims are not to be interpreted in a conventional and dictionary sense, and the inventors may appropriately define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.
이상 본 발명의 설명에 의하면, 본 발명은 저부하와 고부하에 따라 공기압을 작용시켜 적정량의 에너지만을 소모하므로 에너지 절감 효과를 달성할 수 있는 유압실린더를 제공하는 것이다.According to the description of the present invention, the present invention is to provide a hydraulic cylinder that can achieve an energy saving effect by consuming only an appropriate amount of energy by operating the air pressure according to the low load and high load.
본 발명은 기존의 유압펌프에 비해서 발열이 적어 작동유 저장공간을 축소시킬 수 있어 콤팩트(compact)한 구조로 설계가능하다. 또한, 본 발명은 압력 맥동현상을 완화하기 위해 연속적으로 고출력을 제공할 수 있게 구성되어 있다. The present invention can be designed in a compact structure because the heat generation is less than the conventional hydraulic pump can reduce the working oil storage space. In addition, the present invention is configured to continuously provide a high power to alleviate pressure pulsation.
도 1은 본 발명의 바람직한 실시예에 따른 부스터 펌프를 일체로 구비한 유압실린더의 내부 구성을 개략적으로 도시한 종단면도이다.1 is a longitudinal sectional view schematically showing an internal configuration of a hydraulic cylinder having an integrated booster pump according to a preferred embodiment of the present invention.
도 2는 저부하시 고속 전진 동작으로 구동하는 본 발명에 따른 유압실린더의 종단면도이다.Figure 2 is a longitudinal sectional view of the hydraulic cylinder according to the present invention to drive in a high speed forward operation at low loads.
도 3은 고부하시 저속 전진 동작으로 구동하는 본 발명에 따른 유압실린더의 종단면도이다.3 is a longitudinal sectional view of the hydraulic cylinder according to the present invention for driving in a low speed forward operation at high loads.
도 4는 고부하시 저속 전진 동작으로 구동하는 본 발명에 따른 유압실린더의 종단면도로서, 펌프 피스톤의 전진상태를 도해한다.Fig. 4 is a longitudinal sectional view of the hydraulic cylinder according to the present invention for driving in a low speed forward operation at high load, illustrating the advanced state of the pump piston.
도 5는 고부하시 저속 전진 동작으로 구동하는 본 발명에 따른 유압실린더의 종단면도로서, 펌프 피스톤의 후진상태를 도해한다.Fig. 5 is a longitudinal sectional view of the hydraulic cylinder according to the present invention for driving in a low speed forward operation at high load, illustrating the reverse state of the pump piston.
도 6은 고부하시 저속 전진 동작으로 구동하는 본 발명에 따른 유압실린더의 종단면도로서, 펌프 피스톤의 전진상태를 도해한다.Fig. 6 is a longitudinal sectional view of the hydraulic cylinder according to the present invention for driving in a low speed forward operation at high loads, illustrating the advanced state of the pump piston.
도 7은 본 발명에 따른 유압실린더의 후진 동작을 도해한 종단면도이다.7 is a longitudinal sectional view illustrating the reverse operation of the hydraulic cylinder according to the present invention.
도 8은 본 발명의 다른 실시예에 따른 유압실린더의 종단면도이다.8 is a longitudinal sectional view of a hydraulic cylinder according to another embodiment of the present invention.
이제, 본 발명에 따른 부스터 펌프를 일체로 구비한 유압실린더는 첨부 도면을 참조로 하여 상세히 설명될 것이다.Now, a hydraulic cylinder integrally equipped with a booster pump according to the present invention will be described in detail with reference to the accompanying drawings.
본 발명의 장점, 특징, 그리고 이들을 달성하는 방법은 첨부되는 도면과 함께 후술되는 실시예들을 통해 명확해질 것이다. 본 명세서에서 각 도면의 구성요소들에 참조부호를 부가함에 있어서, 명세서 전체에 걸쳐 동일 참조부호는 동일하거나 유사한 구성요소를 지칭한다. 또한, 본 명세서에서 관련된 공지기술에 대한 구체적인 설명이 본 발명의 요지를 불명료하게 할 경우에는 그 상세한 설명은 생략한다.Advantages, features, and methods of achieving the present invention will be apparent from the embodiments described below in conjunction with the accompanying drawings. In the present specification, in adding the reference numerals to the components of each drawing, the same reference numerals refer to the same or similar components throughout the specification. In addition, when the detailed description of the related art related to the present specification makes the gist of the present invention unclear, the detailed description is omitted.
본 발명의 바람직한 실시예에 따른 부스터 펌프를 일체로 구비한 유압실린더는 다음과 같은 구성으로 이루어져 있다.The hydraulic cylinder integrally provided with a booster pump according to a preferred embodiment of the present invention has the following configuration.
도 1을 참조로 하면, 본 발명의 바람직한 실시예에 따른 유압실린더는 상측 실린더와 하측실린더로 구획되는 제1본체부(참조부호 없음)와, 이 제1본체부와 유체연통가능하게 나란하게 설치된 제2본체부(30), 즉 부스터 펌프로 구성된다. 여기서, 제1본체부는 실린더를 상하로 구획하는데, 상측 실린더(20) 내에는 스프링(S)을 장착한 증압 피스톤(P2)을 설치하는 한편 하측 실린더(10) 내에는 작동 피스톤(P1)을 설치하고 있다. 특히, 본 발명의 바람직한 실시예에 따른 유압실린더는 작동 피스톤(P1)과 증압 피스톤(P2)을 동축선상으로 배치되어, 하측 실린더(10)와 상측 실린더(20)를 일렬로 배열하고 있다. Referring to Figure 1, the hydraulic cylinder according to a preferred embodiment of the present invention is installed side by side in fluid communication with the first body portion (without reference numeral) partitioned into an upper cylinder and a lower cylinder, the first body portion It consists of the 2nd main-body part 30, ie, a booster pump. Here, the first main body divides the cylinder up and down, in the upper cylinder 20 is installed a boosting piston (P2) with a spring (S) is mounted, while the operating piston (P1) is installed in the lower cylinder (10) Doing. Particularly, in the hydraulic cylinder according to the preferred embodiment of the present invention, the actuating piston P1 and the boosting piston P2 are coaxially arranged to arrange the lower cylinder 10 and the upper cylinder 20 in a line.
구체적으로, 하측 실린더(10)는 하측에 제1공압작동실(110)과 상측에 제1유압작동실(120)을 형성하는 한편 이의 상부에 소직경의 보어(121)를 구비한다. 하측 실린더(10)는 하측에 인접하게 제1공압통로(H1)과, 상측에 인접하게 제1유압통로(W1), 및 제1공압통로(H1)와 제1유압통로(W1) 사이에 제2공압통로(H2)를 형성한다. 작동 피스톤(P1)은 작동로드(P1-1)와 피스톤 링(P1-2) 및 가이드 로드(P1-3)를 구비한다. 바람직하기로, 피스톤 링(P1-2)은 제1공압통로(H1)와 제2공압통로(H2) 사이에 배치되게 한다. 제1공압작동실(110)은 피스톤 링(P1-2)에 의하여 하부에 후진용 공압작동실(110a)을 형성하고 상부에 전진용 공압작동실(110b)을 형성한다. 즉, 제1공압통로(H1)는 후진용 공압작동실(110a)과 연통되고 제2공압통로(H2)는 전진용 공압작동실(110b)과 연통된다. 물론, 제1유압통로(W1)는 제1유압작동실(120)과 연통된다.Specifically, the lower cylinder 10 forms a first pneumatic operation chamber 110 at the lower side and a first hydraulic operation chamber 120 at the upper side thereof, and has a small diameter bore 121 thereon. The lower cylinder 10 is formed between the first pneumatic passage H1 adjacent to the lower side, the first hydraulic passage W1 adjacent to the upper side, and between the first pneumatic passage H1 and the first hydraulic passage W1. 2 Form a pneumatic passage (H2). The actuation piston P1 has an actuation rod P1-1, a piston ring P1-2 and a guide rod P1-3. Preferably, the piston ring P1-2 is arranged between the first pneumatic passage H1 and the second pneumatic passage H2. The first pneumatic operation chamber 110 forms a reverse pneumatic operation chamber 110a in the lower portion and a forward pneumatic operation chamber 110b in the upper portion by the piston ring P1-2. That is, the first pneumatic passage H1 communicates with the reverse pneumatic operation chamber 110a, and the second pneumatic passage H2 communicates with the forward pneumatic operation chamber 110b. Of course, the first hydraulic passage W1 is in communication with the first hydraulic operation chamber 120.
상측 실린더(20)는 하측 실린더(10)의 상측에 배치되되, 하측 실린더(10)의 보어(121)를 통해 유체연통가능하게 설치된다. 상측 실린더(20)는 도시된 바와 같이 이의 내부에 증압 피스톤(P2)을 배치하고, 하부에 제2유압작동실(220)을 형성하고 상부에 제2공압작동실(210)을 형성한다. 제2유압작동실(220)과 제2공압작동실(210)은 활주형 피스톤(P3)으로 구획된다. 제2유압통로(W2)는 제2유압작동실(220)과 연통되되, 활주형 피스톤(P3)의 하사점보다 아래에 배치된다.The upper cylinder 20 is disposed above the lower cylinder 10, and is installed in fluid communication via the bore 121 of the lower cylinder 10. The upper cylinder 20 has a boosting piston P2 disposed therein as shown in the drawing, a second hydraulic operating chamber 220 formed at a lower portion thereof, and a second pneumatic operating chamber 210 formed at an upper portion thereof. The second hydraulic operation chamber 220 and the second pneumatic operation chamber 210 are partitioned by a sliding piston P3. The second hydraulic passage W2 communicates with the second hydraulic operation chamber 220, and is disposed below the bottom dead center of the sliding piston P3.
상측 실린더(20)는 전술된 바와 같이 제2공압작동실(210)과 제2유압작동실(220)을 한정하는 내부 공간에 증압 피스톤(P2)을 구비하는데, 증압 피스톤(P2)은 하부로 길이연장된 피스톤 로드(P2-1)를 구비하는바, 이 피스톤 로드(P2-1)는 하측 실린더(10)의 보어(121)를 관통하여 제1유압작동실(120)과 제2유압작동실(220)의 출입을 허용한다. 피스톤 로드(P2-1)의 자유단은 작동 피스톤(P1)의 가이드 로드(P1-3) 내로 접근을 허용할 수 있다. 바람직하기로, 피스톤 로드(P2-1)는 피스톤 로드(P2-1)의 길이방향을 따라 활주이동가능한 활주형 피스톤(P3)을 구비하며, 활주형 피스톤(P3)은 스프링(S)을 통해 증압 피스톤(P2)에 구비된다. The upper cylinder 20 has a boosting piston P2 in an inner space defining the second pneumatic operating chamber 210 and the second hydraulic operating chamber 220 as described above, and the boosting piston P2 is lowered. The piston rod P2-1 has an extended length, and the piston rod P2-1 penetrates the bore 121 of the lower cylinder 10 to operate the first hydraulic actuation chamber 120 and the second hydraulic actuation. Allows entry of the seal 220. The free end of the piston rod P2-1 may allow access into the guide rod P1-3 of the actuation piston P1. Preferably, the piston rod P2-1 has a slidable piston P3 slidable along the longitudinal direction of the piston rod P2-1, the slidable piston P3 through the spring S It is provided in the boosting piston P2.
특히, 상측 실린더(20)의 상단부는 제2공압작동실(210)로 공압의 흐름을 주입 및/또는 배출가능하게 제어하는 제1마스터 밸브(250)를 구비한다. 제1마스터 밸브(250)는 이의 내부에 제1밸브스플(260)을 수단으로 하여 공압의 흐름을 제어할 수 있다. 제1마스터 밸브(250)는 제1밸브스플(260)을 통해 선택적으로 개폐되는 제3공압통로(H3)와 제4공압배기통로(H4) 및 제6공압통로(H6)를 구비하는 한편 2개의 첵밸브(261,262)로 개폐되는 제5공압통로(H5)를 구비한다. 여기서, 제1마스터 밸브(250)의 제5공압통로(H5)는 공압 유체의 (순방향 및 역방향의) 유동방향에 따라 개별적으로 개폐될 수 있도록 2개의 첵밸브(261,262)를 구비하는데, 예컨대 제1마스터 밸브(250) 내부 공압을 외부로 배출되는 순방향 유동을 가능하도록 제2첵밸브(262)를 개방하고 제1첵밸브(261)를 폐쇄하고, 이와 달리 외부 공압을 제1마스터 밸브(250)의 내부 공간으로 유입하는 역방향 유동을 가능하도록 제2첵벨브(262)를 폐쇄하고 제1첵밸브(261)를 개방할 수 있다. 제6공압통로(H6)는 제1마스터 밸브(250)와 제2공압작동실(210) 사이를 연통하도록 형성되어 있다.In particular, the upper end of the upper cylinder 20 is provided with a first master valve 250 to control the injection and / or discharge of the flow of pneumatic to the second pneumatic operation chamber (210). The first master valve 250 may control the flow of pneumatic pressure by means of the first valve spool 260 therein. The first master valve 250 includes a third pneumatic passage H3, a fourth pneumatic exhaust passage H4, and a sixth pneumatic passage H6, which are selectively opened and closed through the first valve spline 260, and A fifth pneumatic passage (H5) is opened and closed by two check valves (261, 262). Here, the fifth pneumatic passage H5 of the first master valve 250 includes two check valves 261 and 262 to be opened and closed individually according to the flow direction (forward and reverse) of the pneumatic fluid. One master valve 250 opens the second check valve 262 and closes the first check valve 261 so as to enable forward flow of the internal pneumatic pressure to the outside. The second check valve 262 may be closed and the first check valve 261 may be opened to allow a reverse flow flowing into the inner space of the valve. The sixth pneumatic passage H6 is formed to communicate between the first master valve 250 and the second pneumatic operation chamber 210.
제2본체부(30)는 제1유압작동실(120)과 제2유압작동실(220)를 갖춘 제1본체부와 유체연통가능하게 나란하게 설치되는바, 제3공압작동실(310)과 제3유압작동실(320) 및 제4유압작동실(330)을 형성한다. 제3공압작동실(310)은 펌프 피스톤(P4)에 의하여 하부에 후진용 공압작동실(310a)을 형성하고 상부에 전진용 공압작동실(310b)을 형성한다. 즉, 제9공압통로(H9)는 후진용 공압작동실(310a)과 연통되고 제11공압통로(H11)는 전진용 공압작동실(310b)과 연통된다. The second body part 30 is installed side by side in fluid communication with the first body part including the first hydraulic operation chamber 120 and the second hydraulic operation chamber 220, the third pneumatic operation chamber 310 And a third hydraulic operation chamber 320 and a fourth hydraulic operation chamber 330. The third pneumatic operation chamber 310 forms a reverse pneumatic operation chamber 310a in the lower portion and a forward pneumatic operation chamber 310b in the upper portion by the pump piston P4. That is, the ninth pneumatic passage H9 communicates with the reverse pneumatic operation chamber 310a, and the eleventh pneumatic passage H11 communicates with the forward pneumatic operation chamber 310b.
제2본체부(30)는 제3공압작동실(310)과 제3유압작동실(320) 및 제4유압작동실(330)로 한정된 내부 공간에 펌프 피스톤(P4)을 배치하는데, 펌프 피스톤(P4)은 하부로 길이연장되어 제3공압작동실(310)과 제3유압작동실(320) 및 제4유압작동실(330)의 출입을 허용하는 피스톤 로드(P4-1)를 구비한다. 피스톤 로드(P4-1)의 자유단은 제4유압작동실(330)를 관통할 수 있게 길이연장되도록 한다. The second body part 30 arranges the pump piston P4 in an internal space defined by the third pneumatic operation chamber 310, the third hydraulic operation chamber 320, and the fourth hydraulic operation chamber 330. P4 has a piston rod P4-1 extending in the lower portion to allow the third pneumatic operation chamber 310, the third hydraulic operation chamber 320, and the fourth hydraulic operation chamber 330 to enter and exit. . The free end of the piston rod (P4-1) is to be extended in length to penetrate the fourth hydraulic operation chamber (330).
특히, 제2본체부(30)의 상단부는 제3공압작동실(310)로 공압의 흐름을 주입 및/또는 배출가능하게 제어하는 제2마스터 밸브(350)를 구비한다. 제2마스터밸브(350)는 이의 내부에 제2밸브스플(360)을 수단으로 하여 제7공압통로(H7)와, 제10공압통로(H10), 제11공압통로(H11), 제12공압통로(H12), 및 제13공압통로(H13)를 선택적으로 개폐하여 공압의 흐름을 제어할 수 있도록 설계되어 있다. 제2마스터 밸브(350)는 또한 제3공압작동실(310)의 상측에 배치되고 펌프 피스톤(P4)의 후진 구동에 따른 가압으로 개방가능한 제1밸브 로드(370)를 구비하는데, 제1밸브 로드(370)는 제7공압통로(H7)와 제12공압통로(H12) 및 제3공압작동실(310)의 상측 사이에 개재된다. 제1밸브 로드(370)는 이의 상단에 제1가압스프링(371)를 장착하여 제7공압통로(H7)로 유동하는 공압, 제12공압통로(H12)로 유동하는 공압, 또는 펌프 피스톤(P4)의 가압을 통해 제7공압통로(H7)와 제12공압통로(H12)를 상호 연통하거나 폐쇄할 수 있다. 이와 더불어서, 제2본체부(30)는 제3공압작동실(310)의 하측에 배치되고 펌프 피스톤(P4)의 전진 구동에 따른 가압으로 개방가능한 제2밸브 로드(380)를 구비하는데, 제2밸브 로드(380)는 제8공압통로(H8)와 제14공압배기통로(H14) 및 제3공압작동실(310)의 하측 사이에 개재된다. 제2밸브 로드(380)는 이의 하단에 제2가압스프링(381)를 장착하여 제8공압통로(H8)로 유동하는 공압 및/또는 펌프 피스톤(P4)의 가압을 통해 제14공압배기통로(H14)를 개폐할 수 있다.In particular, the upper end of the second body portion 30 is provided with a second master valve 350 to control the injection and / or discharge of the flow of pneumatic to the third pneumatic operation chamber (310). The second master valve 350 has a seventh pneumatic passage H7, a tenth pneumatic passage H10, an eleventh pneumatic passage H11, and a twelfth pneumatic pressure by means of the second valve spool 360 therein. The passage H12 and the thirteenth pneumatic passage H13 are selectively opened and closed to control the flow of pneumatic pressure. The second master valve 350 is also provided with a first valve rod 370 disposed above the third pneumatic operation chamber 310 and openable by pressurization according to the reverse driving of the pump piston P4. The rod 370 is interposed between the seventh pneumatic passage H7, the twelfth pneumatic passage H12, and the upper side of the third pneumatic operation chamber 310. The first valve rod 370 is equipped with a first pressurizing spring 371 at the upper end thereof, and the pneumatic flows through the seventh pneumatic passage H7, the pneumatic flows through the twelfth pneumatic passage H12, or the pump piston P4. The pressurization of) may allow the seventh pneumatic passage H7 and the twelfth pneumatic passage H12 to communicate with each other or close each other. In addition, the second main body 30 has a second valve rod 380 disposed below the third pneumatic operation chamber 310 and openable by pressurization according to the forward driving of the pump piston P4. The two-valve rod 380 is interposed between the eighth pneumatic passage H8 and the fourteenth pneumatic exhaust passage H14 and the lower side of the third pneumatic operation chamber 310. The second valve rod 380 is provided with a second pressure spring 381 at the lower end thereof, and the 14th pneumatic exhaust passage (p) is pressurized by the pneumatic and / or pump piston P4 flowing into the eighth pneumatic passage H8. H14) can be opened and closed.
구체적으로, 제2본체부(30)는 제2마스터 밸브(350)와 제3공압작동실(310)의 후진용 공압작동실(310a)을 유체연통가능하도록 제2마스터 밸브(350)에 제10공압통로(H10)를 형성하고 제3공압작동실(310)의 하측에 제9공압통로(H9)를 형성한다. 제2마스터 밸브(350)는 제13공압통로(H13)를 통해 내부 공간으로 공압을 제공받을 수 있다.Specifically, the second main body 30 may be formed on the second master valve 350 to enable fluid communication between the second master valve 350 and the reverse pneumatic operation chamber 310a of the third pneumatic operation chamber 310. A ten pneumatic passage H10 is formed and a ninth pneumatic passage H9 is formed below the third pneumatic operation chamber 310. The second master valve 350 may be provided with pneumatic pressure to the internal space through the thirteenth pneumatic passage H13.
제11공압통로(H11)는 제2마스터 밸브(350)의 내부 공간과 제3공압작동실(310)의 전진용 공압작동실(310b)을 상호 연통가능하게 형성된다. The eleventh pneumatic passage H11 is formed to communicate with the internal space of the second master valve 350 and the pneumatic operation chamber 310b for moving forward of the third pneumatic operation chamber 310.
제2본체부(30)는 제3유압작동실(320)에 작동유의 유출입을 보장하는 제3유압통로(W3)와 제4유압통로(W4)를 형성하고, 제4유압작동실(330)에 작동유의 유출입을 보장하는 제5유압통로(W5)와 제6유압통로(W6)를 형성한다. 본 발명에 따른 유압실린더는 제2유압작동실(220)의 제2유압통로(W2)와 제3유압작동실(320)의 제4유압통로(W4) 사이에 제4첵밸브(322)를 배치하여, 제2유압작동실(220)과 제3유압작동실(320)을 유체연통가능하도록 개폐할 수 있다. 또한, 본 발명에 따른 유압실린더는 제2유압작동실(220)의 제2유압통로(W2)와 제4유압작동실(330)의 제6유압통로(W6) 사이에 제6첵밸브(332)를 배치하여, 제2유압작동실(220)과 제4유압작동실(330)을 유체연통가능하도록 개폐할 수 있다.The second body part 30 forms a third hydraulic passage W3 and a fourth hydraulic passage W4 for ensuring the flow of hydraulic oil in the third hydraulic operating chamber 320 and the fourth hydraulic operating chamber 330. The fifth hydraulic passage (W5) and the sixth hydraulic passage (W6) to ensure the flow in and out of the hydraulic fluid is formed. The hydraulic cylinder according to the present invention includes a fourth check valve 322 between the second hydraulic passage W2 of the second hydraulic operating chamber 220 and the fourth hydraulic passage W4 of the third hydraulic operating chamber 320. The arrangement may open and close the second hydraulic operation chamber 220 and the third hydraulic operation chamber 320 to be in fluid communication. In addition, the hydraulic cylinder according to the present invention includes a sixth valve 332 between the second hydraulic passage W2 of the second hydraulic operating chamber 220 and the sixth hydraulic passage W6 of the fourth hydraulic operating chamber 330. ) May be arranged to open and close the second hydraulic operation chamber 220 and the fourth hydraulic operation chamber 330 in fluid communication.
본 발명에 따른 유압실린더는 제1유압작동실(120)의 제1유압통로(W1)와 제3유압작동실(320)의 제3유압통로(W3) 사이에 제3첵밸브(321)를 배치하여, 제1유압작동실(120)과 제3유압작동실(320)를 유체연통가능하도록 개폐할 수 있다. 또한, 본 발명에 따른 유압실린더는 제1유압작동실(120)의 제1유압통로(W1)와 제4유압작동실(330)의 제5유압통로(W5) 사이에 제5첵밸브(331)를 배치하여, 제1유압작동실(120)과 제4유압작동실(330)를 유체연통가능하도록 개폐할 수 있다.The hydraulic cylinder according to the present invention includes a third check valve 321 between the first hydraulic passage W1 of the first hydraulic operating chamber 120 and the third hydraulic passage W3 of the third hydraulic operating chamber 320. In this case, the first hydraulic operation chamber 120 and the third hydraulic operation chamber 320 may be opened and closed to allow fluid communication. In addition, the hydraulic cylinder according to the present invention includes a fifth valve 331 between the first hydraulic passage W1 of the first hydraulic operating chamber 120 and the fifth hydraulic passage W5 of the fourth hydraulic operating chamber 330. ) May be arranged to open and close the first hydraulic operation chamber 120 and the fourth hydraulic operation chamber 330 in fluid communication.
이하에서는, 본 발명의 바람직한 실시예에 따른 유압실린더의 구동을 참조도면을 통해 설명한다.Hereinafter, the driving of the hydraulic cylinder according to a preferred embodiment of the present invention will be described with reference to the drawings.
도 1은 피스톤 후진시 본 발명에 따른 유압실린더의 내부를 도시한 도면이다. 후진 공압이 제1공압통로(H1)를 통해 제1공압작동실(110)의 후진용 공압작동실(110a) 내부로 유입되어 작동 피스톤(P1)을 후진시키고, 제3공압통로(H3)를 통해 제1마스터 밸브(250)의 내부 공간에 제1밸브스플(260)을 작동시키는데, 제2공압작동실(210)의 공압은 제6공압통로(H6)를 지나 제4공압배기통로(H4)로 배기된다. 이때, 증압 피스톤(P2)은 스프링(S)의 탄발력으로 후진된다.1 is a view showing the interior of the hydraulic cylinder according to the present invention when the piston is retracted. The reverse pneumatic flows into the reverse pneumatic operation chamber 110a of the first pneumatic operation chamber 110 through the first pneumatic passage H1 to reverse the operation piston P1, and the third pneumatic passage H3. The first valve valve 260 is operated in the internal space of the first master valve 250, and the air pressure of the second pneumatic operation chamber 210 passes through the sixth pneumatic passage H6 and the fourth pneumatic exhaust passage H4. Is exhausted. At this time, the boosting piston (P2) is reversed by the spring force of the spring (S).
도 2는 본 발명에 따른 유압실린더의 저부하시 고속 전진 동작을 도해한 것으로, 전진 공압이 제2공압통로(H2)를 통해 제1공압작동실(110)의 전진용 공압작동실(110b) 내부로 유입되어 작동 피스톤(P1)을 전진시킨다.Figure 2 illustrates the high-speed forward operation at low load of the hydraulic cylinder according to the present invention, the forward pneumatic operation of the forward pneumatic operation chamber 110b of the first pneumatic operation chamber 110 through the second pneumatic passage (H2) It flows in and advances the working piston P1.
도 3은 본 발명에 따른 유압실린더의 고부하시 저속 전진 동작을 도해한 것으로, 공압이 제5공압통로(H5)와 제1첵밸브(261)을 지나 제1밸브스플(260)을 밀어붙여 개방상태의 제6공압통로(H6)를 따라 제2공압작동실(210)로 유입된다. 제2공압작동실(210)로 유입된 공압은 증압 피스톤(P3)을 전진시켜 작동 피스톤(P1)이 고압으로 저속 전진하게 된다.Figure 3 illustrates the low-speed forward operation at high loads of the hydraulic cylinder according to the present invention, the pneumatic pressure is pushed through the first valve sprocket 260 through the fifth pneumatic passage (H5) and the first valve 261 to open. It flows into the 2nd pneumatic operation chamber 210 along the 6th pneumatic path H6 of a state. The pneumatic pressure introduced into the second pneumatic operation chamber 210 advances the boosting piston P3 so that the operation piston P1 is advanced at a high speed at a low pressure.
도 4는 고부하시 저속 전진 동작 상태의 유압실린더에서 펌프 피스톤의 전진 상태를 도해한 것이다. 제13공압통로(H13)로 유입된 공압은 제2마스터 밸브(350)의 제2밸브스플(360)을 이동시켜 제11공압통로(H11)를 지나 제3공압작동실(310), 특히 전진용 공압작동실(310b)로 유입된다. 제3공압작동실(310)의 전진용 공압작동실(310b)로 유입된 공압은 결과적으로 펌프 피스톤(P4)을 전진시킨다. Figure 4 illustrates the forward state of the pump piston in the hydraulic cylinder in a low speed forward operation state at high loads. The pneumatic pressure introduced into the thirteenth pneumatic passage H13 moves the second valve splice 360 of the second master valve 350 to pass through the eleventh pneumatic passage H11, and in particular, moves forward. Flow into the pneumatic operation chamber (310b). The pneumatic pressure introduced into the forward pneumatic operation chamber 310b of the third pneumatic operation chamber 310 consequently advances the pump piston P4.
덧붙여서, 후진용 공압작동실(310a) 내부의 공압은 제9공압통로(H9)와 제10공압통로(H10) 그리고 제2밸브스플(360)를 지나 외부로 배기되는데, 선택가능하기로 제2밸브스플(360)을 지나 제2본체부 외부로 빠져나가는 공압은 소음기(참조부호 없음)를 관통해 배기되도록 한다. 제3유압작동실(320)의 작동유는 제3유압통로(W3)와 제1유압통로(W1)를 통해 제1유압작동실(120)로 유입되어 작동 피스톤(P1)을 전진 구동한다. 이때, 제2유압작동실(220)의 작동유가 제2유압통로(W2)를 통해 제2본체부로 유동하면서 제6첵밸브(332)를 개방시켜 제4유압작동실(330) 내부로 저장된다.In addition, the air pressure inside the reverse pneumatic operation chamber 310a is exhausted to the outside through the ninth pneumatic passage H9, the tenth pneumatic passage H10, and the second valve spout 360, so that the second pressure is selectable. Pneumatic pressure exiting the second main body portion beyond the valve spline 360 allows exhaust through the silencer (not indicated). The hydraulic fluid of the third hydraulic operating chamber 320 flows into the first hydraulic operating chamber 120 through the third hydraulic passage W3 and the first hydraulic passage W1 to drive the operating piston P1 forward. At this time, the operating oil of the second hydraulic operation chamber 220 flows to the second body portion through the second hydraulic passage W2, and opens the sixth valve 332 to be stored inside the fourth hydraulic operation chamber 330. .
도 5는 고부하시 저속 전진 동작 상태의 유압실런더에서 펌프 피스톤의 후진 상태를 도해한 것이다. 제13공압통로(H13)로 유입된 공압은 제2마스터 밸브(350)의 제2밸브스플(360)을 이동시켜 제10공압통로(H10)와 제9공압통로(H9)를 지나 제3공압작동실(310)의 후진용 공압작동실(310a)로 유입된다. 제3공압작동실(310)의 후진용 공압작동실(310a)로 유입된 공압은 펌프 피스톤(P4)을 후진시킨다. Figure 5 illustrates the reverse state of the pump piston in the hydraulic cylinder in a low speed forward operation state at high loads. The pneumatic flow introduced into the thirteenth pneumatic passage H13 moves the second valve splice 360 of the second master valve 350 to pass through the tenth pneumatic passage H10 and the ninth pneumatic passage H9 and the third pneumatic pressure. It flows into the reverse pneumatic operation chamber 310a of the operation chamber 310. The pneumatic pressure introduced into the reverse pneumatic operation chamber 310a of the third pneumatic operation chamber 310 reverses the pump piston P4.
도 6은 고부하시 저속 전진 동작으로 구동하는 본 발명에 따른 유압실린더의 종단면도로서, 펌프 피스톤의 전진상태를 도해한다.Fig. 6 is a longitudinal sectional view of the hydraulic cylinder according to the present invention for driving in a low speed forward operation at high loads, illustrating the advanced state of the pump piston.
도 7은 본 발명에 따른 유압실린더의 후진 동작을 도해한 종단면도이다.7 is a longitudinal sectional view illustrating the reverse operation of the hydraulic cylinder according to the present invention.
도 8은 본 발명의 다른 실시예에 따른 유압실린더의 종단면도를 도해한 도면이다. 본 발명의 다른 실시예에 따른 유압실린더는 도 1 내지 도 7에 도시된 유압실린더의 변형예로서, 증압 피스톤(P2)과 작동 피스톤(P1)의 배열 상태를 제외하고는 매우 유사한 구조로 이루어져 있기 때문에, 본 발명의 명료한 이해를 돕기 위해서 유사하거나 동일한 구성부재에 대한 설명은 여기서 배제할 것이다. 8 is a view illustrating a longitudinal cross-sectional view of a hydraulic cylinder according to another embodiment of the present invention. Hydraulic cylinder according to another embodiment of the present invention is a modification of the hydraulic cylinder shown in Figures 1 to 7, except that the configuration of the boosting piston (P2) and the operation piston (P1) arrangement is very similar structure Therefore, description of similar or identical components will be excluded here for the sake of clarity of understanding of the present invention.
도시된 바와 같이, 본 발명의 다른 실시예에 따른 유압실린더는 작동 피스톤(P1)과 증압 피스톤(P2)을 비동축 또는 쌍축(雙軸)선상으로 배치하여, 하측 실린더(10)와 상측 실린더(20)를 일렬로 배열하지 않고 평행배열한다. 물론, 하측 실린더(10)와 상측 실린더(20)는 유체연통가능하게 연결되어야만 한다.As shown, the hydraulic cylinder according to another embodiment of the present invention by arranging the operating piston (P1) and the boosting piston (P2) in a non-coaxial or twin-axial line, the lower cylinder 10 and the upper cylinder ( 20) are arranged in parallel, not in a row. Of course, the lower cylinder 10 and the upper cylinder 20 must be connected in fluid communication.
이와 같이, 하측 실린더(10)와 상측 실린더(20)를 나란히 평행하게 배열한 유압실린더는 도 1 내지 도 7에 도시된 일(一)자로 길이연장된 제1본체부에 비해서 전반적으로 설치 높이를 줄여 더욱 콤팩트한 구조를 제공하면서도, 에너지 효율을 높일 수 있다. As such, the hydraulic cylinder in which the lower cylinder 10 and the upper cylinder 20 are arranged side by side in parallel has an overall installation height in comparison with the first main body portion lengthwise being formed as a single one shown in FIGS. 1 to 7. This reduces energy consumption by providing a more compact structure.
이상 본 발명을 구체적인 실시예를 통하여 상세히 설명하였으나, 이는 본 발명을 구체적으로 설명하기 위한 것으로, 본 발명에 따른 부스터 펌프를 일체로 구비한 유압실린더는 이에 한정되지 않으며, 본 발명의 기술적 사상 내에서 당 분야의 통상의 지식을 가진 자에 의해 그 변형이나 개량이 가능함이 명백하다.Although the present invention has been described in detail through specific embodiments, this is for explaining the present invention in detail, and the hydraulic cylinder integrally provided with the booster pump according to the present invention is not limited thereto, and within the technical idea of the present invention. It is apparent that modifications and improvements are possible by those skilled in the art.
본 발명의 단순한 변형 내지 변경은 모두 본 발명의 영역에 속하는 것으로 본 발명의 구체적인 보호 범위는 첨부된 특허청구범위에 의하여 명확해질 것이다.All simple modifications and variations of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be apparent from the appended claims.

Claims (13)

  1. 하측에 제1공압작동실(110)과 상측에 제1유압작동실(120)을 갖춰 그 내부에 작동 피스톤(P1)을 배치하고, 상기 제1공압작동실(110)의 하측에 제1공압통로(H1)와 상기 제1공압작동실(110)의 상측에 제2공압통로(H2)를 형성하며, 상기 제1유압작동실(120)의 상측에 인접하게 제1유압통로(W1)와 상부에 소직경의 보어(121)를 구비한 하측 실린더(10)와;It is equipped with the 1st pneumatic operation chamber 110 in the lower side, and the 1st hydraulic operation chamber 120 in the upper side, and arrange | positions the operation piston P1 in it, and the 1st pneumatic operation in the lower side of the said 1 pneumatic operation chamber 110. A second pneumatic passage (H2) is formed above the passage (H1) and the first pneumatic operation chamber 110, and the first hydraulic passage (W1) and adjacent to the upper side of the first hydraulic operation chamber (120) A lower cylinder 10 having a bore 121 having a small diameter thereon;
    그 내부에 증압 피스톤(P2)과 활주형 피스톤(P3)을 배치하는데, 상기 활주형 피스톤(P3)에 의하여 하측에 상기 보어(121)와 유체연통가능하게 연결된 제2유압작동실(220)과 상측에 제2공압작동실(210)로 형성되고, 상기 제2유압작동실(220)의 하측에 제2유압통로(W2)를 형성하는 상측 실린더(20); A pressure boosting piston P2 and a sliding piston P3 are disposed therein, and the second hydraulic operation chamber 220 connected in fluid communication with the bore 121 below by the sliding piston P3. An upper cylinder 20 formed at an upper side of the second pneumatic operation chamber 210 and forming a second hydraulic passage W2 at a lower side of the second hydraulic operation chamber 220;
    상기 제1공압통로(H1)에 상호 연통되는 제3공압통로(H3)와, 상기 제2공압작동실(210)에 상호 연통을 돕는 제6공압통로(H6), 2개의 첵밸브(261,262)로 개폐되는 제5공압통로(H5), 및 내부 공간의 공압을 배기하는 제4공압배기통로(H4)를 형성하고, 상기 내부 공간에 배치되어 공압의 흐름을 제어하는 제1밸브스플(260)을 구비하며, 상기 상측 실린더(20)의 제2공압작동실(210)의 상단부에 설치되는 제1마스터 밸브(250);The third pneumatic passage H3 communicating with the first pneumatic passage H1, the sixth pneumatic passage H6 assisting mutual communication with the second pneumatic operation chamber 210, and two check valves 261 and 262. A fifth pneumatic passage (H5) which is opened and closed by the first and fourth pneumatic exhaust passages (H4) for exhausting the pneumatic pressure of the internal space, and is disposed in the internal space to control the flow of pneumatic first valve 260 A first master valve (250) installed at an upper end of the second pneumatic operation chamber (210) of the upper cylinder (20);
    제3공압작동실(310)과 제3유압작동실(320) 및 제4유압작동실(330)을 갖춰 그 내부에 펌프 피스톤(P4)을 배치하는데, 상기 펌프 피스톤(P4)에 의하여 하측에 후진용 공압작동실(310a)과 상측에 전진용 공압작동실(310b)로 형성되고, 상기 제3공압작동실(310)은 이의 하부에 제9공압통로(H9)와 상기 펌프 피스톤(P4)의 접촉으로 개폐되는 제2밸브 로드(380)를 구비하며 이의 상부에 상기 펌프 피스톤(P4)의 접촉으로 개폐되는 제1밸브 로드(370)를 구비하고, 상기 제3유압작동실(320)은 제3첵밸브(321)로 개폐되는 제3유압통로(W3)과 제4첵밸브(322)로 개폐되는 제4유압통로(W4)를 형성하며, 상기 제4유압작동실(330)은 제5첵밸브(331)로 개폐되는 제5유압통로(W5)와 제6첵밸브(332)로 개폐되는 제6유압통로(W6)를 형성하고 있는 제2본체부(30); 및Equipped with a third pneumatic operation chamber 310, the third hydraulic operation chamber 320 and the fourth hydraulic operation chamber 330 therein is arranged a pump piston (P4) therein, the lower by the pump piston (P4) A reverse pneumatic operation chamber 310a and a forward pneumatic operation chamber 310b are formed on the upper side, and the third pneumatic operation chamber 310 has a ninth pneumatic passage H9 and the pump piston P4 at the lower portion thereof. The second valve rod 380 is opened and closed by the contact of the first valve rod 370 is opened and closed by the contact of the pump piston (P4), the third hydraulic operation chamber 320 is A third hydraulic passage W3 opened and closed by the third check valve 321 and a fourth hydraulic passage W4 opened and closed by the fourth check valve 322, and the fourth hydraulic operating chamber 330 is formed of a third hydraulic passage W330. A second main body 30 forming a fifth hydraulic passage W5 which is opened and closed by a 5 kV valve 331 and a sixth hydraulic passage W6 which is opened and closed by a sixth kV valve 332; And
    상기 제1밸브 로드(370)를 통해 상기 전진용 공압작동실(310b)에 연통되는 제11공압통로(H11)와, 상기 제9공압통로(H9)에 상호 연통되는 제10공압통로(H10), 상기 제3공압작동실(310)에 상호 연통을 돕는 제7공압통로(H7), 제2마스터 밸브(350)의 내부 공간에서 상기 제1밸브 로드(370)까지 연통되는 제12공압통로(H12), 및 상기 제2마스터 밸브(350)의 내부 공간으로 공압의 유입을 허용하는 제13공압통로(H13)를 형성하고, 상기 내부 공간에 배치되어 공압의 흐름을 제어하는 제2밸브스플(360)을 구비하며, 상기 제3공압작동실(310)의 상단부에 설치되는 제2마스터 밸브(350);로 이루어진 부스터 펌프를 일체로 구비한 유압실린더.The eleventh pneumatic passage H11 communicating with the forward pneumatic operation chamber 310b through the first valve rod 370, and the tenth pneumatic passage H10 communicating with the ninth pneumatic passage H9. The seventh pneumatic passage (H7), which helps the third pneumatic operation chamber 310 to communicate with each other, the twelfth pneumatic passage communicating with the first valve rod 370 in the internal space of the second master valve 350 ( H12) and a second valve spout (13) which forms a thirteenth pneumatic passage (H13) allowing the inflow of pneumatic pressure into the internal space of the second master valve (350) and controls the flow of pneumatic pressure (H13). And a second master valve (350) installed at an upper end of the third pneumatic operation chamber (310).
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 작동 피스톤(P1)은 작동로드(P1-1)와 피스톤 링(P1-2) 및 가이드 로드(P1-3)으로 이루어져 있는 유압실린더.The actuating piston (P1) is a hydraulic cylinder consisting of an actuating rod (P1-1), a piston ring (P1-2) and a guide rod (P1-3).
  3. 청구항 2에 있어서,The method according to claim 2,
    상기 피스톤 링(P1-2)은 상기 제1공압통로(H1)와 상기 제2공압통로(H2) 사이에 배치되는 유압실린더.The piston ring (P1-2) is a hydraulic cylinder disposed between the first pneumatic passage (H1) and the second pneumatic passage (H2).
  4. 청구항 1에 있어서,The method according to claim 1,
    상기 활주형 피스톤(P3)은 상기 증압 피스톤(P2)의 피스톤 로드(P2-1) 길이방향을 따라 활주가능하게 배치되고, 상기 활주형 피스톤(P3)은 스프링(S)으로 상기 증압 피스톤(P2)에 탄발지지되는 유압실린더.The sliding piston (P3) is slidably arranged along the longitudinal direction of the piston rod (P2-1) of the boosting piston (P2), the sliding piston (P3) is a spring (S) the boosting piston (P2) Hydraulic cylinder that is supported on).
  5. 청구항 1에 있어서,The method according to claim 1,
    상기 펌프 피스톤(P4)의 피스톤 로드(P4-1)는 상기 제3공압작동실(310)와 상기 제3유압작동실(320) 및 상기 제4유압작동실(330)의 내부로 출입을 허용할 수 있도록 신장되어 있는 유압실린더.The piston rod P4-1 of the pump piston P4 allows entry and exit into the third pneumatic operation chamber 310, the third hydraulic operation chamber 320, and the fourth hydraulic operation chamber 330. Hydraulic cylinder extended to make it possible.
  6. 청구항 1에 있어서,The method according to claim 1,
    상기 제4유압통로(W4)와 상기 제6유압통로(W6)는 상기 제2유압통로(W2)와 연통가능하게 연결되어 있고,The fourth hydraulic passage W4 and the sixth hydraulic passage W6 are communicatively connected to the second hydraulic passage W2.
    상기 제3유압통로(W3)와 상기 제5유압통로(W5)는 상기 제1유압통로(W1)와 연통가능하게 연결되어 있는 유압실린더.And the third hydraulic passage (W3) and the fifth hydraulic passage (W5) are communicatively connected to the first hydraulic passage (W1).
  7. 청구항 1에 있어서,The method according to claim 1,
    상기 제1밸브 로드(370)는 제1가압스프링(371)을 구비하고,The first valve rod 370 is provided with a first pressure spring 371,
    상기 제2밸브 로드(380)는 제2가압스프링(381)을 구비하는 유압실린더.The second valve rod (380) is a hydraulic cylinder having a second pressure spring (381).
  8. 청구항 1에 있어서,The method according to claim 1,
    상기 제2본체부(30)는 상기 제2밸브 로드(380)로 공압을 공급하는 제8공압통로(H8)와 상기 제2밸브 로드(380)를 통해 공압을 배기하는 제14공압배기통로(H14)를 구비하는 유압실린더.The second main body 30 has an eighth pneumatic passage H8 for supplying pneumatic pressure to the second valve rod 380 and a fourteenth pneumatic exhaust passage for exhausting pneumatic pressure through the second valve rod 380. Hydraulic cylinder provided with H14).
  9. 청구항 1에 있어서,The method according to claim 1,
    상기 상측 실린더(20)는 상기 하측 실린더(10)의 상측에 유체연통가능하게 일렬로 배열되는 유압실린더.The upper cylinder (20) is a hydraulic cylinder arranged in a line in fluid communication with the upper side of the lower cylinder (10).
  10. 청구항 9에 있어서,The method according to claim 9,
    상기 상측 실린더(20)의 증압 피스톤(P2)은 상기 하측 실린더(10)의 작동 피스톤(P1)과 동축선상으로 배열되는 유압실린더.Pressure boosting piston (P2) of the upper cylinder (20) is a hydraulic cylinder is arranged coaxially with the operating piston (P1) of the lower cylinder (10).
  11. 청구항 1에 있어서,The method according to claim 1,
    상기 상측 실린더(20)는 상기 하측 실린더(10)와 평행하게 배열되어 있는 유압실린더.The upper cylinder 20 is a hydraulic cylinder is arranged in parallel with the lower cylinder (10).
  12. 청구항 11에 있어서,The method according to claim 11,
    상기 상측 실린더(20)의 증압 피스톤(P2)은 상기 하측 실린더(10)의 작동 피스톤(P1)과 쌍축선상으로 배열되는 유압실린더.Pressure boosting piston (P2) of the upper cylinder (20) is a hydraulic cylinder is arranged in a twin-axial line with the operating piston (P1) of the lower cylinder (10).
  13. 청구항 1에 있어서,The method according to claim 1,
    상기 제5공압통로(H5)는 공압의 순방향 또는 역방향 유동흐름에 따라 개별적으로 개폐가능하게 상기 2개의 첵밸브(261,262)를 구비하는 유압실린더.The fifth pneumatic passage (H5) is a hydraulic cylinder having the two check valve (261, 262) to be opened and closed individually according to the forward or reverse flow flow of the pneumatic pressure.
PCT/KR2015/013514 2015-03-27 2015-12-10 Hydraulic cylinder integrally comprising booster pump WO2016159482A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2017551714A JP6649400B2 (en) 2015-03-27 2015-12-10 Hydraulic cylinder with integrated booster pump
CN201580080426.5A CN107660258B (en) 2015-03-27 2015-12-10 Booster pump integrated formula hydraulic cylinder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020150043320A KR101712262B1 (en) 2015-03-27 2015-03-27 Hydraulic cylinder integrally incoporating buster pump
KR10-2015-0043320 2015-03-27

Publications (1)

Publication Number Publication Date
WO2016159482A1 true WO2016159482A1 (en) 2016-10-06

Family

ID=57007021

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2015/013514 WO2016159482A1 (en) 2015-03-27 2015-12-10 Hydraulic cylinder integrally comprising booster pump

Country Status (4)

Country Link
JP (1) JP6649400B2 (en)
KR (1) KR101712262B1 (en)
CN (1) CN107660258B (en)
WO (1) WO2016159482A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6937341B2 (en) * 2019-06-21 2021-09-22 仁科工業株式会社 Hydraulic booster device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003013904A (en) * 2001-06-27 2003-01-15 Karasawa Fine Ltd Hydraulic intensifier
KR20050045086A (en) * 2003-11-10 2005-05-17 현대자동차주식회사 Pressure intensifying cylinder
KR20110040708A (en) * 2009-10-13 2011-04-20 김기찬 Actuator using pneumatic pressure and oil pressure
KR20110070951A (en) * 2009-12-19 2011-06-27 주재석 Fluid pressure cylinder with booster pump
WO2014137124A1 (en) * 2013-03-04 2014-09-12 Ju Jae Seak Hydraulic pressure booster cylinder integrated with booster pump device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56147901A (en) * 1980-04-14 1981-11-17 Oigen Ratsupu Pressure conversion hydraulic-pneumatic driver
JPS59103875U (en) * 1982-12-28 1984-07-12 エスエムシ−株式会社 Air Hydro Pump
US5582009A (en) * 1995-12-27 1996-12-10 Aries Engineering Company, Inc. Air-oil intensifier
CN2743573Y (en) * 2004-07-08 2005-11-30 韩昌求 Variable capacity booster pump
KR100704958B1 (en) 2006-04-12 2007-04-09 주영돈 Hydraulic pressure transformers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003013904A (en) * 2001-06-27 2003-01-15 Karasawa Fine Ltd Hydraulic intensifier
KR20050045086A (en) * 2003-11-10 2005-05-17 현대자동차주식회사 Pressure intensifying cylinder
KR20110040708A (en) * 2009-10-13 2011-04-20 김기찬 Actuator using pneumatic pressure and oil pressure
KR20110070951A (en) * 2009-12-19 2011-06-27 주재석 Fluid pressure cylinder with booster pump
WO2014137124A1 (en) * 2013-03-04 2014-09-12 Ju Jae Seak Hydraulic pressure booster cylinder integrated with booster pump device

Also Published As

Publication number Publication date
CN107660258B (en) 2019-08-09
CN107660258A (en) 2018-02-02
KR20160115510A (en) 2016-10-06
KR101712262B1 (en) 2017-03-03
JP6649400B2 (en) 2020-02-19
JP2018511760A (en) 2018-04-26

Similar Documents

Publication Publication Date Title
WO2014137124A1 (en) Hydraulic pressure booster cylinder integrated with booster pump device
CN102400975B (en) Secondary stretching and retracting hydraulic cylinder and hydraulic equipment
CN101655112B (en) Series cylinder
WO2016159482A1 (en) Hydraulic cylinder integrally comprising booster pump
CN102518617A (en) Travel valve, sequential action type combination hydraulic cylinder and hydraulic equipment
WO2013055156A1 (en) Hydraulic control device using hydraulic actuator
CN108302090A (en) A kind of multilayer core pipe two-stage hydraulic cylinder and crane
CN108533539A (en) Double-action hydraulic booster
WO2015064785A1 (en) Flow control valve for construction equipment, having floating function
CN1277330A (en) Double valve with anticonstraint ability
WO2012011650A1 (en) Dual fuel injection valve
CN106965393A (en) A kind of four cylinder directly locks the inner circulation structure of injection moulding machine mode-locking oil cylinder
WO2019221330A1 (en) Pump container having double check plate structure
CN105384091A (en) Telescopic boom structure with a multilevel independent telescopic cylinder and crane
CN203879839U (en) Balance device of press slide
CN108518377B (en) A kind of automatic diverter valve for garbage compression station
WO2017043681A1 (en) Pilot check valve and construction heavy equipment provided with same
GB2068330A (en) Telescopic crane jib
JP5002501B2 (en) Air-oil conversion intensifier
JP4208695B2 (en) Air-oil conversion intensifier
CN210050128U (en) Double-acting multistage hydraulic cylinder with built-in additional oil way
CN209255805U (en) A kind of structure driving movable plate
WO2020059901A1 (en) Pressure delivery cylinder comprising bumper section
CN102442617A (en) Two-stage extending landing leg mechanism
CN212167710U (en) High-speed cylinder control pipeline of steam flash explosion equipment

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15887889

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2017551714

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15887889

Country of ref document: EP

Kind code of ref document: A1