KR100706106B1 - High-pressure metering pump - Google Patents

High-pressure metering pump Download PDF

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Publication number
KR100706106B1
KR100706106B1 KR1020050107126A KR20050107126A KR100706106B1 KR 100706106 B1 KR100706106 B1 KR 100706106B1 KR 1020050107126 A KR1020050107126 A KR 1020050107126A KR 20050107126 A KR20050107126 A KR 20050107126A KR 100706106 B1 KR100706106 B1 KR 100706106B1
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South Korea
Prior art keywords
piston
swash plate
metering
center
cylinder
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KR1020050107126A
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Korean (ko)
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함영복
정용채
김광영
안국영
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(주) 디유티코리아
한국기계연구원
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2042—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
    • F04B1/124—Pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/128—Driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2021—Details or component parts characterised by the contact area between cylinder barrel and valve plate
    • F04B1/2028—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2035—Cylinder barrels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2064—Housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2078—Swash plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
    • F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/11—Kind or type liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/30—Retaining components in desired mutual position
    • F05B2260/301—Retaining bolts or nuts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)

Abstract

본 발명의 목적은 본 발명은 유압 또는 열유체 분야에 관련된 고압발포, 사출성형 등에 적용되는 고압 미터링 펌프에 관한 것으로서, 더욱 세부적으로는 릴리프밸브를 통하여 미터링바디를 조정함에 따라 피스톤의 행정(stroke)이 조정되어 고압, 고온의 폴리우레탄 원액을 액상으로 이송하는 고압 미터링펌프에 관한 것이다.SUMMARY OF THE INVENTION The present invention relates to a high pressure metering pump applied to high pressure foaming, injection molding, etc. related to the hydraulic or thermal fluid fields, and more particularly to the stroke of a piston by adjusting a metering body through a relief valve. This adjustment relates to a high pressure metering pump that transfers a high pressure, high temperature polyurethane stock solution to a liquid phase.

그 구성으로 다수개의 볼 조인트(54a, 54b)와 연결하는 피스톤로드(51b)가 피스톤(51a)의 내부경과 결합되고, 상기 피스톤(51a)은 왕복이송하도록 흡입ㆍ토출실린더챔버(55a, 55b)내에 내삽되며, 센터샤프트(52) 일측단에는 센터센터스프링(53)이 센터실린더에 내설되고, 상기 실린더챔버(55a, 55b)는 롤러베어링(12)에 지지되어 회전하는 실린더 블록(50)과; In such a configuration, a piston rod 51b connecting to a plurality of ball joints 54a and 54b is engaged with the inner diameter of the piston 51a, and the piston 51a is suction / discharge cylinder chambers 55a and 55b for reciprocating transfer. It is interpolated within, the center shaft spring 53 is installed in the center cylinder at one end of the center shaft 52, the cylinder chamber (55a, 55b) is supported by the roller bearing 12 and the cylinder block 50 to rotate ;

상기 피스톤(51a)에 내삽된 다수개의 볼 조인트(54a, 54b)가 경사캠(73a)의 일 측단에 내삽되고, 상기 경사캠(73a) 타 측단에는 트러스트 롤러 트러스트 롤러 베어링(72)이 결합되며, 사판로드 홀(71a)이 관통된 사판로드(71)가 센터에 내삽되어 있는 사판(70)과;A plurality of ball joints 54a and 54b interpolated in the piston 51a are interpolated at one end of the inclined cam 73a, and a thrust roller thrust roller bearing 72 is coupled to the other end of the inclined cam 73a. A swash plate 70 in which the swash plate rod 71 through which the swash plate rod hole 71 a is inserted is inserted into the center;

하단부가 나선형으로 형성된 리드 피스톤(81)구비되고 상기 리드 피스톤(81)일단측에 백래쉬 제거 백래쉬 제거 스프링(84)이 내설되며, 타단측에는 이송나사에 의해 결합하는 센터 통공(83)을 구비하는 미터링 바디(80)와;Metering is provided with a lead piston 81 having a lower end spirally formed and a backlash removal backlash removal spring 84 is installed at one end of the lead piston 81, and a center through-hole 83 is coupled to the other end by a feed screw. Body 80;

상기 실린더 블록(50)과 상기 밸브판(60)과, 상기 사판(70)과 상기 미터링 바디(80)를 내부에 포함하는 각 케이싱부(10)(20)(30)를 특징으로 한다.Each casing part 10, 20, 30 includes the cylinder block 50, the valve plate 60, the swash plate 70, and the metering body 80 therein.

그 효과는 사판의 형상을 원통형에서 구형으로 개선하여 때문에 가공이 쉽고 안정성이 우수하고, 커넥팅로드형 피스톤과 경사캠에 트러스트 롤러 베어링 또는 유체정압 베어링을 사용하여 응력이 로드로 분산되게 함으로서 피스톤과 실린더 블록과의 마찰을 줄이는 것과, 펌프의 케이싱을 기존의 일체형에서 3부분으로 분리결합구조에 의하여 펌프 고장시의 수리와 재조립을 보다 간편화되도록 하여 보수유지가 가능하게 하는 것과, 미터링 바디와 리드 피스톤을 체결하는 나사부는 피치 1mm의 가는 나사를 적용함으로써, 스프링을 이용하여 나사를 밀착시킴으로서 나사의 백래쉬를 예방하여 미터링 정밀도를 높이는데 있다. The effect is that the shape of the swash plate is improved from cylindrical to spherical, so it is easy to process and has excellent stability, and the stress is distributed to the rod by using a thrust roller bearing or a hydrostatic bearing on the connecting rod-type piston and the inclined cam so that the piston and cylinder Reduce friction with the block, separate the casing of the pump from the existing one-piece, three-part structure to simplify the repair and reassembly in the event of a pump failure, maintenance and repair, metering body and lead piston The screw unit for fastening is to apply a thin screw with a pitch of 1mm, and to improve the metering accuracy by preventing the backlash of the screw by closely contacting the screw using a spring.

미터링 펌프, 고압, 가변용량, 액셜 피스톤 펌프 Metering Pumps, High Pressure, Variable Capacity, Axial Piston Pumps

Description

고압 미터링 펌프{High-pressure metering pump}High-pressure metering pump

도 1은 종래기술인 용량가변형 사축식액압기계의 단면도.   1 is a cross-sectional view of a conventional variable displacement bent axis hydraulic machine.

도 2는 본 발명에 따른 고압 미터링펌프의 사시도.   Figure 2 is a perspective view of the high pressure metering pump according to the present invention.

도 3은 본 발명에 따른 고압 미터링펌프의 단면도.   Figure 3 is a cross-sectional view of the high pressure metering pump according to the present invention.

도 4는 본 발명에 따른 고압 미터링펌프의 작동상태를 나타내는 단면도.   Figure 4 is a cross-sectional view showing an operating state of the high pressure metering pump according to the present invention.

도 5는 본 발명에 따른 고압 미터링펌프의 정압베어링의 적용한 다른 실시예도면.   Figure 5 is another embodiment of the application of the hydrostatic bearing of the high pressure metering pump according to the present invention.

< 도면의 주요 부분에 대한 부호의 설명 >   <Description of Symbols for Main Parts of Drawings>

10: 몸체케이싱 12: 롤러베어링10: body casing 12: roller bearing

20: 구동케이싱 23: 슬라이드 접촉면20: drive casing 23: slide contact surface

24,25,35: 볼트 26: 토출량제어다이얼핸들24, 25, 35: Bolt 26: Discharge amount control dial handle

30: 축받이 케이싱 33: 릴리프밸브30: bearing casing 33: relief valve

40: 샤프트 50: 실린더 블록40: shaft 50: cylinder block

51a: 피스톤 51b: 피스톤로드51a: piston 51b: piston rod

52: 센터 샤프트 53: 센터 스프링52: center shaft 53: center spring

54a,54b: 볼 조인트 55a,55b : 흡입 또는 토출 실린더 챔버54a, 54b: ball joint 55a, 55b: suction or discharge cylinder chamber

56a,56b: 흡입 또는 토출 유로 60: 밸브판56a, 56b: suction or discharge flow path 60: valve plate

61, 62: 흡입 또는 토출포트 70: 사판61, 62: suction or discharge port 70: swash plate

71: 사판로드 71a: 사판로드 홀71: Saphan Road 71a: Saphan Road Hall

72: 트러스트 롤러 베어링 73a : 경사캠 72: thrust roller bearing 73a: inclined cam

73b: 볼 리테이너 73c: 정압베어링의 포켓이 형성된 경사캠73b: Ball retainer 73c: Inclined cam with pockets of hydrostatic bearings

73d: 포켓 80: 미터링 바디73d: pocket 80: metering body

81: 리드피스톤 82: 가는 나사 81: lead piston 82: fine screw

83: 통공 84: 백래쉬 제거 스프링83: through hole 84: backlash removing spring

본 발명은 유압 또는 열유체 분야에 관련된 고압발포, 사출성형 등에 적용되는 고압 미터링 펌프에 관한 것으로서, 더욱 세부적으로는 릴리프밸브를 통하여 미터링바디를 조정함에 따라 피스톤의 행정(stroke)이 조정되어 고압, 고온의 폴리우레탄 원액을 액상으로 이송하는 고압 미터링펌프에 관한 것이다.The present invention relates to a high pressure metering pump applied to high pressure foaming, injection molding, etc. related to the hydraulic or thermal fluid field, and more specifically, the stroke of the piston is adjusted by adjusting the metering body through a relief valve. It relates to a high pressure metering pump for transferring a high temperature polyurethane stock solution to the liquid phase.

종래기술로는 도 1의 대한민국 공개특허공보 제10-1990-7000764(1990.08.16.)호에는 용량가변형 사축식액압기계에 관한 것으로서, 케이싱(201)이 소경의 베어링부(202A)와 대경의 경사통부(202B)로 형성되는 원통형의 케 이싱본체(202)와, 상기 케이싱본체(202)의 경사통부(202B) 개구측을 폐쇄하는 헤드케이싱(203)으로 구성되며, 또한 베어링부측에 배설된 베어링슬리브(204)와, 상기헤드케이싱(203)내에 배설되어 회전축(205)과 일체로 회전하는 실린더 블록(208)과, 정방형의 밸브판(211)과, 드라이브디스크(206)와 상기밸브판(211) 사이에서 실린더 블록을 경전자재로 지지하는 센터샤프트(214)와, 헤드케이싱 면측에 형성된 오목한 원호형의 경전슬라이드면(215)과, 경전슬라이드면에 따라 밸브판을 경전시키기 위해 헤드케이싱에 설치된 경전기구(218)와, 드라이브디스크에 작용하는 피스톤유압반력 중의 레이디얼 하중성분을 받는 레이디얼 정압베어링(223)과, 상기드라이브디스크(206)에 작용하는 피스톤유압반력 중의 트러스트 하중성분을 받는 트러스트정압베어링으로 구성된다.In the prior art, Korean Patent Laid-Open Publication No. 10-1990-7000764 (Aug. 16, 1990.) of FIG. 1 relates to a variable displacement bent axis hydraulic machine, in which a casing 201 is formed of a small diameter bearing portion 202A and a large diameter. A cylindrical casing body 202 formed of the inclined cylinder portion 202B, and a head casing 203 for closing the opening side of the inclined cylinder portion 202B of the casing body 202, and disposed on the bearing portion side. A bearing sleeve 204, a cylinder block 208 disposed in the head casing 203 and integrally rotating with the rotating shaft 205, a square valve plate 211, a drive disc 206 and the valve plate A center shaft 214 for supporting the cylinder block with the light electronic material between the 211s, a concave arc-shaped light slide surface 215 formed on the head casing surface side, and a head casing for turning the valve plate along the light slide slide surface. The light fixture 218 installed in the Which consists of a piston and a radial static pressure bearing 223 to receive the radial load components of the hydraulic reaction force, a piston thrust hydrostatic bearing receives a thrust load components of the hydraulic reaction forces acting on the drive disc (206).

그러나 상기한 도 1은 가변용량 액시얼 피스톤펌프가 사판의 형상이 원통구조로 인하여 유체막을 형성이 불안정하고, 이로 인한 윤활작용이 원활하지 못하며, 더욱이 상기 기계의 케이싱본체가 일체형으로 되어있어 공정상 또는 펌프고장 발생 시 수리가 불가능하여 재수리가 되지 않아 고가의 신품을 교체해야 함으로 인한 원가상승을 초래하는 단점이 있다.However, in FIG. 1, the variable displacement axial piston pump has an unstable shape of the fluid film due to the cylindrical structure of the swash plate, and the lubrication effect thereof is not smooth, and the casing body of the machine is integrated. In addition, there is a disadvantage in that the cost rises due to the need to replace expensive new products because the repair is not possible to repair when the pump failure occurs.

또한, 기존의 플런저형 피스톤을 사용으로 인한 피스톤 로드와 실린더 블럭과의 마찰이 크기 때문에 피스톤과 실린더의 기계적 성질과 수명이 저하되는 등의 단점이 있다.In addition, since the friction between the piston rod and the cylinder block due to the use of the conventional plunger-type piston is large, there are disadvantages such as deterioration of mechanical properties and life of the piston and cylinder.

또한, 상기헤드케이싱 면측에 형성된 오목한 원호형의 경전슬라이드면과 경전슬라이드면에 따라 밸브판을 경전시키기 위해 헤드케이싱에 설치된 경전기구사이 에는 상기 실린더불록 내에서 왕복하는 피스톤의 추력으로 인하여 백래쉬가 발생되는 단점도 있다.In addition, a backlash is generated between the concave arc-shaped light slide surface formed on the head casing surface side and the light fixtures installed in the head casing to light the valve plate according to the light slide surface due to the thrust of the piston reciprocating in the cylinder block. There are also disadvantages.

이에 본 발명은 상기한 바와 같은 종래기술의 문제점을 해결하고자 하는 것으로서, 본 발명은 사판의 형상을 원통형에서 구형으로 개선하여 때문에 가공이 쉽고 안정성이 우수한 효과를 가져 오게 하고, 또한, 커넥팅로드형 피스톤(이하 ‘피스톤’이라 한다)과 경사캠에 롤러 베어링 또는 유체정압베어링을 선택적으로 사용하여 응력이 로드로 분산되게 함으로서 피스톤과 실린더 블록과의 마찰을 줄이는데 목적이 있다.Accordingly, the present invention is to solve the problems of the prior art as described above, the present invention improves the shape of the swash plate from cylindrical to spherical, so that the processing is easy and excellent in stability, and also connecting rod type piston It is to reduce the friction between the piston and the cylinder block by selectively using a roller bearing or hydrostatic bearing on the inclined cam (hereinafter referred to as 'piston') and by distributing the stress to the rod.

또한, 본 발명은 펌프의 케이싱을 기존의 일체형에서 3부분으로 분리결합구조에 의하여 펌프 고장시의 수리와 재조립을 보다 간편화되도록 하여 보수유지가 가능하게 하는데 목적이 있다.In addition, an object of the present invention is to enable the maintenance and repair of the casing of the pump by a three-part separation structure from the existing one-piece to simplify the repair and reassembly at the time of the pump failure.

또한, 본 발명은 미터링 바디와 리드 피스톤을 체결하는 나사부는 피치 1mm의 가는 나사를 적용함으로써, 스프링을 이용하여 나사를 밀착시킴으로서 나사의 백래쉬를 예방하여 미터링 정밀도를 높이는데 또 다른 목적이 있다.In addition, the present invention has a further object to increase the metering accuracy by preventing the backlash of the screw by applying a screw with a pitch of 1mm, the screw portion for fastening the metering body and the lead piston by using a spring.

상기한 목적 달성을 위해 외부 구동원으로 부터 동력이 구동축에 의해 사면 경사각에 따른 고압, 고온의 폴리우레탄 원액을 액상의 작동유로 흡입, 토출하는 밸브판을 구비하는 고압 미터링 펌프는 다수개의 볼 조인트와 연결하는 피스톤로드가 각각의 피스톤의 내부경과 결합되고, 상기 피스톤은 왕복이송하도록 흡입ㆍ토출실린더챔버 내에 내삽되며, 센터샤프트 일측단에는 센터스프링이 센터실린더에 내설되고, 상기 실린더챔버는 베어링에 지지되어 회전하는 실린더 블록과; 상기 피스톤에 내삽된 다수개의 볼 조인트가 경사캠 일 측단에 내삽되고, 상기 경사캠 타 측단에는 트러스트 롤러 베어링이 결합되며, 사판로드 홀이 관통된 사판로드가 센터 상에 내삽되어 있는 사판과; 하단부가 나선형의 가는나사가 형성된 리드 피스톤이 구비되고 상기 리드 피스톤의 일단측에 백래쉬 제거 스프링이 내설되며, 타단측에는 가는나사에 의해 결합하는 센터 통공을 구비하는 미터링 바디와; 상기 실린더 블록과 상기 밸브판과, 상기 사판과, 상기 미터링 바디를 내부에 포함하는 각 케이싱부로 구성되는 것을 특징으로 한다.In order to achieve the above object, a high-pressure metering pump having a valve plate for sucking and discharging high-pressure and high-temperature polyurethane stock solution according to an inclination angle by a drive shaft from an external drive source with a liquid working oil is connected to a plurality of ball joints. The piston rod is coupled to the inner diameter of each piston, the piston is inserted into the suction and discharge cylinder chamber for reciprocating transfer, the center spring is built in the center cylinder at one end of the center shaft, the cylinder chamber is supported by the bearing A rotating cylinder block; A swash plate having a plurality of ball joints interpolated in the piston at one end of the inclined cam, a thrust roller bearing coupled to the other side of the inclined cam, and a swash plate rod having a swash plate rod hole penetrated therein; A metering body having a lead piston having a spiral thread formed at a lower end thereof, having a backlash removing spring installed at one end of the lead piston, and having a center hole coupled to the other end thereof by a screw; And the casing portion including the cylinder block, the valve plate, the swash plate, and the metering body therein.

본 발명의 목적을 달성하기 위한 구성은 도면의 간단한 설명을 참고로 설명한다. 도 2는 본 발명에 따른 고압 미터링 펌프의 사시도이고, 도 3는 본 발명에 따른 고압 미터링 펌프의 단면도이고, 도 4은 본 발명에 따른 고압 미터링 펌프의 작동상태를 나타내는 단면도이고, 도 5는 본 발명에 따른 고압 미터링 펌프의 정압베어링의 적용한 다른 실시예 도면이다.The configuration for achieving the object of the present invention will be described with reference to the brief description of the drawings. 2 is a perspective view of a high pressure metering pump according to the present invention, FIG. 3 is a sectional view of a high pressure metering pump according to the present invention, FIG. 4 is a sectional view showing an operating state of the high pressure metering pump according to the present invention, and FIG. Another embodiment of the application of the hydrostatic bearing of the high pressure metering pump according to the invention.

이하, 본 발명의 구성 및 그 결합관계에 대하여 도면을 참조하여 상세히 설명하기로 한다.Hereinafter, the configuration and the coupling relationship of the present invention will be described in detail with reference to the drawings.

도 3에 도시한 바와 같이 본 발명은 외부 구동원으로부터 동력이 구동축(40)에 의해 사면경사각에 따른 고압, 고온의 폴리우레탄 원액을 액상의 작동유로 흡입, 토출하는 밸브판(60)을 구비하는 고압 미터링 펌프는 다수개의 볼 조인트(54a, 54b)와 연결하는 피스톤로드(51b)가 피스톤(51a)의 내부경과 결합되고, 상기 피스톤(51a)은 왕복이송하도록 흡입 또는 토출 실린더챔버(55a, 55b)내에 내삽되며, 센터샤프트(52) 일측단에는 센터스프링(53)이 센터실린더에 내설되고, 상기 실린더챔버(55a, 55b)는 롤러베어링(12)에 지지되어 회전하는 실린더 블록(50)과; 상기 피스톤(51a)에 내삽된 다수개의 볼 조인트(54a, 54b)가 경사캠(73a)의 일 측단에 내삽되고, 상기 경사캠(73a) 타 측단에는 트러스트 롤러 베어링(72)이 결합되며, 사판로드 홀(71a)이 관통된 사판로드(71)가 내삽되어 있는 사판(70)과; 하단부가 나선형의 가는나사(82)가 형성된 리드 피스톤(81)이 구비되고 상기 리드 피스톤(81)일단측에 백래쉬 제거 스프링(84)이 내설되며, 타단측에는 가는나사(82)에 의해 결합하는 센터 통공(83)을 구비하는 미터링 바디(80)와; 상기 실린더 블록(50)과 상기 밸브판(60)과, 상기 사판(70)과 상기 미터링 바디(80)를 내부에 포함하는 각 케이싱부(10)(20)(30)로 구성되는 것을 특징으로 한다.As shown in FIG. 3, the present invention provides a high pressure having a valve plate 60 for driving and discharging a high-pressure, high-temperature polyurethane stock solution according to a slope angle by a drive shaft 40 by an external drive source to a liquid working oil. In the metering pump, a piston rod 51b connecting to a plurality of ball joints 54a and 54b is coupled to an inner diameter of the piston 51a, and the piston 51a is suction or discharge cylinder chamber 55a and 55b to reciprocate. A cylinder block 50 interpolated in the center shaft 52 at one end of the center shaft 52, the cylinder chambers 55a and 55b being supported by the roller bearings 12 and rotating; A plurality of ball joints 54a and 54b interpolated in the piston 51a are interpolated to one side end of the inclined cam 73a, and the thrust roller bearing 72 is coupled to the other end of the inclined cam 73a, and the swash plate A swash plate 70 into which the swash plate rod 71 through which the rod hole 71 a penetrates is inserted; A lead piston 81 having a lower end of the spiral thin screw 82 is provided, and a backlash removal spring 84 is installed at one end of the lead piston 81, and a center of the other end is coupled to the center by a thin screw 82. A metering body 80 having a through hole 83; The cylinder block 50 and the valve plate 60, the swash plate 70 and the metering body 80, each of which comprises a casing portion 10, 20, 30, do.

또한, 상기 사판(70)은 일단이 평면이고 축 방향 하중받이 부가 구형(spherical)인 것을 특징으로 하며, 상기 사판(70)과 경사캠(73a) 사이의 트러스트 롤러 베어링(72)은 트러스트 롤러 베어링 또는 펌핑유체의 압력을 이용하는 유체정압베어링을 선택적으로 구비된다.In addition, the swash plate 70 is characterized in that the one end is flat and the axial load bearing is spherical, the thrust roller bearing 72 between the swash plate 70 and the inclined cam 73a is a thrust roller bearing Or it is optionally provided with a hydrostatic bearing using the pressure of the pumped fluid.

또한, 상기 미터링 바디(80)의 리드 피스톤(81)은 1mm피치를 갖는 가는 나사(82)로 구비되는 것을 특징으로 한다.In addition, the lead piston 81 of the metering body 80 is characterized in that it is provided with a thin screw 82 having a pitch of 1mm.

도 2에서 상기 각 케이싱(10)(20)(30)은 3단 분리형으로 구성되며 볼트(25)(35)로 분해 조립이 가능한 것을 구성으로 한다.In FIG. 2, each casing 10, 20, 30 is configured to be separated in three stages and is capable of being assembled and disassembled by bolts 25 and 35.

도 5에서 상기 경사캠(73a)은 포켓(73d)을 형성하는 경사캠(73c)으로 구성 되어 정압베어링 역할을 하는 것을 특징으로 한다. In FIG. 5, the inclined cam 73a is composed of an inclined cam 73c forming a pocket 73d, and serves as a static pressure bearing.

상기 포켓(73d)은 펌프에서 요구하는 정압베어링의 역할을 달성하기 위하여 다양한 구조로 변경될 수 있다.The pocket 73d may be modified in various structures to achieve the role of the hydrostatic bearing required by the pump.

이하에서는 상기한 본 발명의 실시 예에 대한 구성의 설명을 참조하여 본 발명의 작용을 상세히 설명하기로 한다.Hereinafter, with reference to the description of the configuration for the embodiment of the present invention will be described in detail the operation of the present invention.

도 4는 본 발명에 따른 고압 미터링 펌프의 작동상태를 나타내는 것으로서, 본 발명 작동관계를 살펴보면 먼저, 토출량제어다이얼핸들(26)을 소요되는 토출조건으로 세팅시키면 미터링 바디(80)의 통공(83)에 삽입된 사판로드(71)를 포함하는 사판(70)이 일전한 경사각을 조정이 된다.Figure 4 shows the operating state of the high-pressure metering pump according to the present invention. Looking at the operating relationship of the present invention, first, when the discharge amount control dial handle 26 is set to the required discharge conditions through hole 83 of the metering body 80 The swash plate 70 including the swash plate rod 71 inserted into it is used to adjust the inclination angle.

그 다음으로 보조펌프(미도시)로부터의 공급되는 작동유는 펌프를 통하여 흡입 또는 토출포터(61, 62)내로 흡입되고, 엔진, 전동기 등의 구동원에 의해서 샤프트(40) 회전에 의하여 실린더 블록(50)이 일체로 회전된다. 이 때 상기 실린더 블록(50)내에 있는 각 실린더챔버(55a, 55b)에 삽입한 피스톤(51a)은 상기 미터링 바디(80)내에 내삽된 사판로드(71)를 지지점으로 하여 사판로드 홀(71a)이 관통된 사판로드(71)가 센터 상에 삽입되어 있는 사판(70)과 볼리테이너(73b)와 결합되어 있는 경사캠(73a)이 트러스트 롤러 베어링(72)의 축심을 중심으로 회전되며, 동시에 다수개의 볼 조인트(54a, 54b)와 연결하는 피스톤로드(51b)가 다수개의 피스톤(51a)과 함께 회전하게 되고, 동시에 상기 각 피스톤(51a)이 상기 실린더챔버(55a, 55b)내를 왕복 운동 하게 된다. Next, the hydraulic oil supplied from the auxiliary pump (not shown) is sucked into the suction or discharge porters 61 and 62 through the pump, and the cylinder block 50 is rotated by the shaft 40 by a driving source such as an engine or an electric motor. ) Is rotated integrally. At this time, the piston 51a inserted into each of the cylinder chambers 55a and 55b in the cylinder block 50 has a swash plate rod hole 71a with the swash plate rod 71 inserted into the metering body 80 as a supporting point. The inclined cam 73a, which is coupled to the swash plate 70 and the ball retainer 73b, through which the swash plate rod 71 is inserted on the center is rotated about the shaft center of the thrust roller bearing 72, The piston rod 51b connecting the plurality of ball joints 54a and 54b rotates together with the plurality of pistons 51a, and at the same time, the respective pistons 51a reciprocate in the cylinder chambers 55a and 55b. Done.

한편, 실린더 블록(50)은 센터 샤프트(52)와 일체로 결합되고, 그 회전은 실 린더 블록(50)의 축선에 대해 경전한다.On the other hand, the cylinder block 50 is integrally coupled with the center shaft 52, the rotation of which is warped about the axis of the cylinder block 50.

이 때 흡입또는 토출포터(61, 62) 내로 흡입되는 작동유는 일측단의 흡입 또는 토출 실린더챔버(55a, 55b)를 통과하여 고압으로 상승된 후 타측단의 흡입 또는 토출 실린더챔버(55a, 55b)를 거쳐 토출되게 된다.At this time, the hydraulic oil sucked into the suction or discharge porters 61 and 62 is elevated to high pressure through the suction or discharge cylinder chambers 55a and 55b at one end, and then the suction or discharge cylinder chambers 55a and 55b at the other end. It is discharged through.

즉, 피스톤 로드(51b)가 상기 실린더챔버(55a, 55b)로부터 퇴행하는 동안 작용유는 흡입 또는 토출포트(61)와 상기 실린더챔버(55a, 55b)를 통해서 흡입되고, 상기 실린더챔버(55a, 55b)내로 진입하는 동안 작동유를 가압하여 타측단의 상기 실린더챔버(55a, 55b)내에 있는 흡입 또는 토출포트(62)를 통해서 토출시키는 토출행정이 된다. That is, the working oil is sucked through the suction or discharge port 61 and the cylinder chambers 55a and 55b while the piston rod 51b retreats from the cylinder chambers 55a and 55b, and the cylinder chamber 55a, While entering 55b), the hydraulic fluid is pressurized to discharge through the suction or discharge port 62 in the cylinder chambers 55a and 55b at the other end.

결국 사판(70)의 경사각에 의해 피스톤(51a)과 상기 각 실린더챔버(55a, 55b)의 흡입 또는 토출행정(stroke)이 변하게 된다. As a result, the suction or discharge strokes of the piston 51a and the cylinder chambers 55a and 55b are changed by the inclination angle of the swash plate 70.

도 4는 본 실시예는 사판 경사각을 최대 경사각(θmax)으로 설정하여 작동되는 것으로서, 상기 실린더블록(50)이 회전될 때, 상기 베어링에 받는 하중은 반경방향 분력인 레디얼하중(FR)과, 축방향분력인 트러스트하중(FT)으로 분산된다. Figure 4 is to operate by setting the swash plate inclination angle to the maximum inclination angle (θmax), when the cylinder block 50 is rotated, the load received on the bearing is a radial load (FR) of radial component force, It is distributed as a thrust load (FT), which is an axial component.

한편, 도 5에서 도시한 바와 같이, 정압베어링이 포켓이 형성된 경사캠(73c)은 비접촉운동에 의한 구조로 설계되어져 있어 마찰저항의 감소 및 수명의 반영구화, 유막의 평균화효과에 의한 안정된 회전정도, 외부가압에 의한 높은 부하용량, 강성 및 감쇠성등의 장점을 지니고 있고, 2방향으로 분산된 하중 및 모멘트 등으로 이루어지는 부하는 슬라이딩 압력유가 공급되어 수 미크론으로 부상되어 윤활되는 기능을 수행하게 된다.On the other hand, as shown in Figure 5, the inclined cam (73c) has a pocket with a positive pressure bearing is designed in a non-contact motion structure to reduce the frictional resistance, semi-permanent durability of life, stable rotation degree by the averaging effect of the oil film It has the advantages of high load capacity, stiffness and damping by external pressure, and the load composed of loads and moments distributed in two directions is supplied with sliding pressure oil to perform the function of floating by several microns and lubricating. .

즉, 이들은 정압이 유체정역학적 및 유체동역학적으로 작용하는 슬라이딩베어링으로서 반경방향, 축방향으로 지지된다.That is, they are supported radially and axially as sliding bearings in which hydrostatic pressure acts hydrostatically and hydrodynamically.

상기와 같이 본 발명은 트러스트 롤러 베어링 또는 정압 베어링 역할을 이루는 최소한 한쪽의 정압베어링이 포켓이 형성된 경사캠(73c)은 가변스로틀수단으로부터 도출한 실린더 블록(50)의 경전각에 따른 베어링 제어압을 공급하는 구성으로 하며, 상기 경사캠(73c)은 실린더 블록(50)의 경전각에 대응한 정압지지능력을 발휘할 수 있다. As described above, in the present invention, at least one hydrostatic bearing serving as a thrust roller bearing or a hydrostatic bearing is provided with an inclined cam 73c having a pocket, and the bearing control pressure according to the tilt angle of the cylinder block 50 derived from the variable throttle means. The inclined cam 73c can exhibit a static pressure supporting capability corresponding to the tilt angle of the cylinder block 50.

그 결과, 피스톤유압반력에 의해서 드라이브디스크에 작용하는 레이디얼방향의 하중 또는 트러스트방향의 하중이 변화해도 이 드라이브디스크의 위치결정정밀도를 항상 일정하게 유지할 수 있고, 회전수의 여하를 불문하고 회전축을 안정적으로 지지할 수 있다. As a result, even if the radial load or the thrust load acting on the drive disc changes due to the piston hydraulic reaction force, the positioning accuracy of the drive disc can be kept constant at all times. I can support it stably.

또, 드라이브디스크(미도시)를 실린더 블록(50)의 경전각에 따라 정압지지하는 것이므로, 이 드라이브디스크와 정압베어링과의 사이의 슬라이드로부터의 누설유량을 최소로, 또한 일정하게 유지할 수 있으므로, 동력손실을 최소한으로 할 수 있다. In addition, since the drive disk (not shown) is statically supported according to the tilt angle of the cylinder block 50, the leakage flow rate from the slide between the drive disk and the hydrostatic bearing can be kept to a minimum and constant. The power loss can be minimized.

또한, 상기 경사캠(73c)에는 실린더 블록(50)의 경전각에 따른 베어링 제어압이 공급되므로, 상기 경사캠(73c)의 슬라이드 안내면의 이상마모 등을 방지할 수 있고, 고압조건하에서 장기간 사용해도 수명의 저하를 방지할 수 있으며, 장시간 연속운전도 가능해진다. In addition, since the bearing control pressure according to the tilt angle of the cylinder block 50 is supplied to the inclined cam 73c, abnormal abrasion and the like of the slide guide surface of the inclined cam 73c can be prevented, and it is used for a long time under high pressure conditions. The fall of the service life can be prevented, and the continuous operation for a long time is also possible.

본 발명은 상술한 특징의 바람직한 실시 예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다.The present invention is not limited to the preferred embodiments of the above-described features, and any person having ordinary skill in the art to which the present invention pertains may make various modifications without departing from the gist of the present invention as claimed in the claims. Of course, such changes will fall within the scope of the claims.

이상에서 설명한 바와 같이 본 발명은 사판의 형상을 원통형에서 구형으로 개선하여 때문에 가공이 쉽고 안정성이 우수하고, 커넥팅로드형 피스톤과 경사캠에 트러스트 롤러 베어링 또는 유체정압 베어링을 사용하여 응력이 로드로 분산되게 함으로서 피스톤과 실린더 블록과의 마찰을 줄이는데 효과가 있다.As described above, the present invention improves the shape of the swash plate from cylindrical to spherical so that the processing is easy and excellent in stability, and stress is distributed to the rod by using a thrust roller bearing or a hydrostatic bearing on the connecting rod piston and the inclined cam. This is effective in reducing friction between the piston and the cylinder block.

또한, 본 발명은 펌프의 케이싱을 기존의 일체형에서 3부분으로 분리결합구조에 의하여 펌프 고장시의 수리와 재조립을 보다 간편화되도록 하여 보수유지가 가능하게 하는 효과가 있다.In addition, the present invention has the effect of allowing the maintenance and repair of the pump by simplifying the repair and reassembly at the time of the pump failure by the separate coupling structure of the three-piece casing of the existing integral type.

또한, 본 발명은 미터링 바디와 리드 피스톤을 체결하는 나사부는 피치 1mm의 가는 나사를 적용함으로써, 스프링을 이용하여 나사를 밀착시킴으로서 나사의 백래쉬를 예방하여 미터링 정밀도를 높이는 효과가 있다. In addition, in the present invention, by applying a thin screw having a pitch of 1 mm, the threaded portion for fastening the metering body and the lead piston has an effect of increasing the metering accuracy by preventing backlash of the screw by closely contacting the screw using a spring.

Claims (2)

외부 구동원으로부터 동력이 구동축(40)에 의해 사면경사각에 따른 고압, 고온의 폴리우레탄 원액을 액상의 작동유로 흡입, 토출하는 밸브판(60)을 구비하는 고압 미터링 펌프에 있어서,In the high-pressure metering pump having a valve plate 60 for driving power from an external drive source by the drive shaft 40 to suck and discharge the high-pressure, high-temperature polyurethane stock solution according to a slope angle into a liquid working oil. 다수개의 볼 조인트(54a, 54b)와 연결하는 피스톤로드(51b)가 피스톤(51a)의 내부경과 결합되고, 상기 피스톤(51a)은 왕복이송하도록 흡입 또는 토출 실린더챔버(55a, 55b)내에 내삽되며, 센터샤프트(52) 일측단에는 센터스프링(53)이 센터실린더에 내설되고, 상기 실린더챔버(55a, 55b)는 롤러베어링(12)에 지지되어 회전하는 실린더 블록(50)과; A piston rod 51b connecting to the plurality of ball joints 54a and 54b is coupled to the inner diameter of the piston 51a, and the piston 51a is inserted into the suction or discharge cylinder chambers 55a and 55b for reciprocating movement. A center block 53 is installed in the center cylinder at one end of the center shaft 52, and the cylinder chambers 55a and 55b are supported by the roller bearings 12 to rotate; 상기 피스톤(51a)에 내삽된 다수개의 볼 조인트(54a, 54b)가 볼리테이너(73b)와 결합하는 경사캠(73a)의 일 측단에 내삽되고, 상기 경사캠(73a) 타 측단에는 트러스트 롤러 베어링(72)이 결합되며, 사판로드 홀(71a)이 관통된 사판로드(71)가 센터에 내삽되어 있는 일단이 평면이고 축 방향 하중받이 부가 구형(spherical)인 사판(70)과;A plurality of ball joints 54a and 54b interpolated in the piston 51a are interpolated at one end of the inclined cam 73a engaging with the ball retainer 73b, and at the other end of the inclined cam 73a in a thrust roller bearing. A swash plate 70 in which one end of which the swash plate rod 71 through which the swash plate rod hole 71 a has penetrated is inserted into the center is flat and the axial load bearing is spherical; 하단부가 1mm피치를 갖는 가는 나사(82)로 형성된 리드피스톤(81)이 구비되고 상기 리드피스톤(81)의 일단측에 백래쉬 제거 스프링(84)이 내설되며, 일측은 상기 가는 나사(82)와 결합하고 상기 사판로드(71)가 결합된 센터 통공(83)을 구비한 미터링 바디(80)와;A lead piston 81 formed of a thin screw 82 having a 1 mm pitch at a lower end thereof is provided, and a backlash removing spring 84 is installed at one end of the lead piston 81, and one side thereof is provided with a thin screw 82. A metering body (80) having a center aperture (83) coupled to and coupled to the swash plate (71); 상기 실린더 블록(50)과 상기 밸브판(60)과, 상기 사판(70)과 상기 미터링 바디(80)를 포함하는 3단 분리형으로 구성되며, 볼트(25)(35)로 분해 조립이 가능한 각 케이싱부(10)(20)(30)로 구성되는 것을 특징으로 하는 고압 미터링 펌프.The cylinder block 50, the valve plate 60, the swash plate 70 and the metering body 80 comprises a three-stage separation type, each of the bolts 25, 35 can be disassembled and assembled High pressure metering pump, characterized in that consisting of casing (10) (20) (30). 제 1항에 있어서, The method of claim 1, 상기 사판(70)과 경사캠(73a) 사이에는 트러스트 롤러 베어링(72) 또는 포켓(73d)을 형성하여 정압베어링 역할을 하는 경사캠(73c)을 선택적으로 사용하는 것을 특징으로 하는 고압 미터링 펌프.High pressure metering pump, characterized in that to form a thrust roller bearing 72 or a pocket (73d) between the swash plate 70 and the inclined cam (73a) to selectively use the inclined cam (73c) serving as a static pressure bearing.
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KR101190076B1 (en) 2010-03-24 2012-10-12 한국기계연구원 Cylinder-Barrel Bearing for Piston Pump
CN110067717A (en) * 2018-05-22 2019-07-30 钟彪 A kind of synchronous self compensation distribution construction and swash plate plunger pump or motor comprising the structure
CN110067718A (en) * 2018-05-22 2019-07-30 钟彪 A kind of sphere static pressure bearing sliding plate auxiliary structure and swash plate plunger pump or motor comprising the structure
CN108561284A (en) * 2018-07-03 2018-09-21 无锡市圣诺高压泵科技有限公司 A kind of oblique disk structure of axial plunger pump
CN110067742A (en) * 2018-09-21 2019-07-30 钟彪 A kind of interior bearing sliding plate pair and swash plate plunger pump or motor comprising the structure
CN110067743A (en) * 2018-09-21 2019-07-30 钟彪 A kind of sliding plate and plunger pump or motor comprising the sliding plate
CN110067743B (en) * 2018-09-21 2024-07-19 上海强田驱动技术有限公司 Slide plate and plunger pump or motor comprising same
CN110067714A (en) * 2019-03-13 2019-07-30 钟彪 A kind of axial plunger pump or motor

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