WO2020071000A1 - Mobile-type oil supply pipe and crosshead-type internal combustion engine - Google Patents

Mobile-type oil supply pipe and crosshead-type internal combustion engine

Info

Publication number
WO2020071000A1
WO2020071000A1 PCT/JP2019/032655 JP2019032655W WO2020071000A1 WO 2020071000 A1 WO2020071000 A1 WO 2020071000A1 JP 2019032655 W JP2019032655 W JP 2019032655W WO 2020071000 A1 WO2020071000 A1 WO 2020071000A1
Authority
WO
WIPO (PCT)
Prior art keywords
crosshead
supply pipe
mounting plate
oil supply
casing
Prior art date
Application number
PCT/JP2019/032655
Other languages
French (fr)
Japanese (ja)
Inventor
直彦 浅田
芳彦 木下
Original Assignee
株式会社ジャパンエンジンコーポレーション
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 株式会社ジャパンエンジンコーポレーション filed Critical 株式会社ジャパンエンジンコーポレーション
Priority to CN201980064784.5A priority Critical patent/CN112789394B/en
Priority to KR1020217011702A priority patent/KR102544855B1/en
Publication of WO2020071000A1 publication Critical patent/WO2020071000A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C5/00—Crossheads; Constructions of connecting-rod heads or piston-rod connections rigid with crossheads
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
    • F16C7/02—Constructions of connecting-rods with constant length
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the technology disclosed herein relates to a movable oil supply pipe and a crosshead internal combustion engine.
  • a component called a crosshead is widely used to connect the piston rod that supports the piston from below and the connecting rod that is connected to the crankshaft.
  • a crosshead is widely used to connect the piston rod that supports the piston from below and the connecting rod that is connected to the crankshaft.
  • a crosshead disclosed in Patent Literature 1 is attached to a lower end of a piston rod (piston rod) and rotates a connecting rod (connecting rod) with respect to the lower end of the crosshead pin (crosshead journal). It has.
  • a passage (hole) is provided inside the crosshead pin, and lubricating oil can be supplied through the passage.
  • Patent Document 2 as another measure for supplying lubricating oil to the crosshead, a movable oil supply pipe (lubricating oil supply pipe) is connected between the casing of the internal combustion engine and the crosshead. It has been disclosed.
  • the movable oil supply pipe according to Patent Literature 2 is configured in the form of a two-armed toggle joint. And, of the two arms configured as the toggle joint, one of the arms connected to the casing is provided with a cover fixed to the casing.
  • the technology disclosed herein is made in view of such a point, and an object thereof is to reduce the number of steps required for positioning a movable oil supply pipe.
  • the present disclosure is connected between a casing of an internal combustion engine and a crosshead connecting a piston rod and a connecting rod, operates to allow reciprocation of the crosshead, and supplies lubricating oil to the crosshead.
  • the present invention relates to a movable oil supply pipe configured to supply.
  • the movable oil supply pipe has a free end connected to the crosshead, a fixed end provided on the opposite side of the free end and connected to the casing, and an inlet opening to the fixed end. And a mounting plate provided on the periphery of the inlet and fixed to the casing.
  • the mounting plate is provided with a supported surface facing downward, and the mounting plate is fixed in a state where the supported surface is placed on a supporting surface provided on the casing. It is configured.
  • the mounting plate including the cover and the like is provided with the supported surface, and the casing is provided with the supporting surface. Then, the step of positioning the mounting plate with respect to the casing can be performed with the supported surface placed on the support surface.
  • the mounting plate when the supported surface and the support surface are working surfaces extending in the horizontal direction, when the supported surface is placed on the support surface, the mounting plate is positioned at least in the up-down direction and the torsion direction. .
  • the positioning of the mounting plate can be completed only by adjusting the position of the mounting plate in the horizontal direction while the mounting plate is placed.
  • the positioning of the mounting plate can be completed only by adjusting the position of the mounting plate along that direction. Thereby, the man-hour required for positioning the movable oil supply pipe can be reduced.
  • the accuracy in the torsion direction can be defined by the tolerance of machining of the supported surface and the supporting surface. In this way, it is possible to define the positioning accuracy by the machining tolerance without leaving the quality of the positioning accuracy to the operator.
  • both the supported surface and the support surface extend along a predetermined direction
  • the mounting plate and the casing have an insertion hole through which a pin for fixing the mounting plate to the casing is inserted.
  • One of the insertion holes provided in the attachment plate or the casing may be formed in an oval shape extending along the predetermined direction.
  • the supported surface and the support surface may both extend in a horizontal direction.
  • the mounting plate when the supported surface is placed on the support surface, the mounting plate is positioned at least in the vertical direction and the torsion direction.
  • the positioning of the mounting plate can be completed only by adjusting the position of the mounting plate in the horizontal direction in the state of being placed on the mounting plate.
  • the casing may be provided with an insertion port into which the fixed end is inserted from the outside to the inside of the casing, and the support surface may be provided at a periphery and below the insertion port. Good.
  • the fixed end is not inserted from the inside of the casing, but is inserted from the outside of the casing.
  • the fixed end can be supported from below by the inner peripheral surface of the insertion opening.
  • the movable oil supply pipe includes a first lever connected to the free end, and a second lever connected to the first lever and connected to the fixed end.
  • a receiving portion bulged outward to receive the first lever and the second lever interlocked with the reciprocation of the head may be provided.
  • the mounting plate may be formed as a disk-shaped flange surrounding the inlet, and the supported surface may be formed by cutting out a lower side surface of the side surface of the disk.
  • the present disclosure also relates to a crosshead internal combustion engine including the movable oil supply pipe.
  • the man-hour required for positioning the movable oil supply pipe can be reduced.
  • FIG. 1 is a schematic view illustrating the configuration of a crosshead type internal combustion engine.
  • FIG. 2 is an exploded perspective view illustrating the configuration of the crosshead.
  • FIG. 3 is a diagram illustrating the configuration of the crosshead and the knee lever.
  • FIG. 4 is a front view illustrating the configuration of the frame.
  • FIG. 5 is a side view illustrating the configuration of the frame.
  • FIG. 6A is a front view illustrating the configuration of the support unit.
  • FIG. 6B is a cross-sectional view illustrating the configuration of the support unit.
  • FIG. 7 is a diagram illustrating the configuration of the knee lever as viewed obliquely from below.
  • FIG. 8 is an explanatory view illustrating the operation of the knee lever in conjunction with the reciprocation of the crosshead.
  • FIG. 8 is an explanatory view illustrating the operation of the knee lever in conjunction with the reciprocation of the crosshead.
  • FIG. 9A is a front view illustrating the configuration of the mounting plate.
  • FIG. 9B is a cross-sectional view illustrating the configuration of the mounting plate.
  • FIG. 9C is a cross-sectional view illustrating the configuration of the mounting plate.
  • FIG. 10A is a front view illustrating a state where the mounting plate is placed on the support.
  • FIG. 10B is a cross-sectional view illustrating a state where the mounting plate is placed on the support.
  • FIG. 11 is a diagram illustrating the configuration of the lower lever.
  • FIG. 12 is a diagram illustrating a connecting portion between the lower lever and the upper lever.
  • FIG. 1 is a schematic diagram illustrating the configuration of a crosshead type internal combustion engine (hereinafter, simply referred to as “engine 1”).
  • the engine 1 is an in-line multi-cylinder diesel engine having a plurality of cylinders.
  • the engine 1 is configured as a two-stroke, one-cycle engine employing a uniflow scavenging method, and is mounted on a large ship such as a tanker, a container ship, or a car carrier.
  • the output shaft of the engine 1 is connected to a propeller (not shown). When the engine 1 is operated, its output is transmitted to the propeller and the boat is propelled.
  • the engine 1 is configured as a so-called crosshead type internal combustion engine in order to realize a longer stroke. That is, in the engine 1, the piston rod 21 that supports the piston 15 from below and the connecting rod 25 that is connected to the crankshaft 22 are connected by the crosshead 40.
  • the engine 1 includes a base plate 11, a frame 12 provided on the base plate 11 and forming a casing according to the present embodiment, and a cylinder jacket 13 provided on the frame 12.
  • the base plate 11, the frame 12, and the cylinder jacket 13 are fastened by a plurality of tie bolts and nuts extending vertically.
  • a cylinder liner 14 as an inner cylinder is disposed in the cylinder jacket 13.
  • a piston 15 is arranged inside the cylinder liner 14.
  • the piston 15 reciprocates vertically along the inner wall of the cylinder liner 14.
  • a cylinder cover 16 is fixed to an upper portion of the cylinder liner 14.
  • An exhaust valve 17 is provided on the cylinder cover 16.
  • the exhaust valve 17 defines a combustion chamber 18 together with the cylinder liner 14, the piston 15, and the cylinder cover 16.
  • the exhaust valve 17 opens and closes a space between the combustion chamber 18 and the exhaust pipe 19.
  • the base plate 11 forms a so-called crankcase, and houses a crankshaft 22 rotatably supported by a bearing 23.
  • a lower end of a connecting rod 25 is rotatably connected to the crankshaft 22 via a crank 24.
  • a pair of guide plates 26 provided along the vertical direction are arranged inside the frame 12 so as to face each other at a predetermined interval.
  • the crosshead 40 described above is disposed between the pair of guide plates 26 so as to be vertically movable.
  • the crosshead 40 connects the lower end of the piston rod 21 and the upper end of the connecting rod 25, and its vertical movement is guided by the guide plate 26.
  • the crosshead 40 is connected to the piston rod 21 so as to move up and down integrally, while connected to the connecting rod 25 so as to rotate about the upper end of the connecting rod 25 as a fulcrum. I have.
  • a knee lever 50 configured as a movable oil supply pipe is provided between the frame 12 and the crosshead 40.
  • the knee lever 50 is composed of a plurality of pipes connected via a toggle-shaped joint, operates so as to allow the crosshead 40 to reciprocate (see also FIG. 8), and is supplied from outside the frame 12.
  • the lubricating oil is supplied to the crosshead 40.
  • FIG. 2 is an exploded perspective view illustrating the configuration of the crosshead 40.
  • FIG. 3 is a diagram illustrating the configuration of the crosshead 40 and the knee lever 50.
  • the crosshead 40 is attached to a lower end of the piston rod 21, and a crosshead pin 41 for rotating the connecting rod 25 with respect to the lower end, and a pair of guide shoes 42 attached to both ends of the crosshead pin 41.
  • a bearing 43 provided at the upper end of the connecting rod 25 and rotatably supporting the crosshead pin 41 from the lower surface side, and a cap member 45 disposed on the upper surface side of the crosshead pin 41.
  • the crosshead pin 41 is formed in a column shape extending in a direction perpendicular to the paper surface of FIGS. 1 and 3, and a part of the upper surface 41a is cut out on a substantially plane.
  • the guide shoe 42 is non-rotatably attached to the crosshead pin 41 and is configured to slide on the guide plate 26. By utilizing this sliding contact, reciprocation of the crosshead 40 can be guided.
  • the bearing 43 is recessed in a substantially semicircular shape that is open upward when viewed in a cross section orthogonal to the center axis O of the crosshead pin 41.
  • the crosshead pin 41 is inserted into the bearing 43.
  • the connecting rod 25 is rotatable about the crosshead pin 41 with the bearing 43 as a fulcrum.
  • a bearing shell 44 is arranged between the bearing 43 and the lower half of the crosshead pin 41.
  • the bearing shell 44 is a so-called bearing metal, and has an arc-shaped cross section when viewed in a section orthogonal to the central axis O.
  • the bearing shell 44 comes into sliding contact with the outer surface (particularly, the outer surface of the lower half) of the crosshead pin 41 and supports the outer surface from below.
  • the bearing shell 44 is provided with a plurality of through grooves 44a penetrating the bearing shell 44 in the thickness direction. These through grooves 44 a communicate with an oil passage 43 a opened on the inner wall of the bearing 43.
  • one end of the knee lever 50 is connected to the bearing 43 of the crosshead 40.
  • This one end is configured as a free end 51 that operates integrally with the crosshead 40, and opens into a space between the bearing 43 and the bearing shell 44 to discharge the lubricating oil to the crosshead 40. I have.
  • the other end of the knee lever 50 that is, the other end provided on the opposite side of the free end 51 in the knee lever 50 is connected to the side plate 33 of the frame 12.
  • the other end is configured as a fixed end 54 that does not operate integrally with the crosshead 40.
  • the fixed end 54 has an inlet 54a in order to take in lubricating oil from outside.
  • a mounting plate 55 fixed to the frame 12 is provided on the periphery of the introduction port 54a.
  • the mounting plate 55 is supported by a support 35 provided on the side plate 33 of the frame 12.
  • FIG. 4 is a front view illustrating the configuration of the frame 12
  • FIG. 5 is a side view illustrating the configuration of the frame 12.
  • FIG. 6A is a front view illustrating the configuration of the support unit 35
  • FIG. 6B is a cross-sectional view illustrating the configuration of the support unit 35.
  • FIG. 6A is a view in which the knee lever 50 is removed from the frame 12 as viewed from the direction of the arrow VIA in FIG.
  • FIG. 6B corresponds to a section taken along the line VIB-VIB in FIG. 6A.
  • the frame 12 includes a top plate 31, a bottom plate 32, a side plate 33, and a plurality of partition walls 34.
  • the top plate 31 is arranged on the cylinder jacket 13 and forms the top of the frame 12.
  • the bottom plate 32 is connected to the base plate 11 and forms the bottom of the frame 12.
  • the side plates 33 form left and right sides of the frame 12.
  • the lower end of the side plate 33 is connected to the bottom plate 32, and the upper end of the side plate 33 is connected to the top plate 31.
  • the plurality of partition walls 34 are arranged along the direction in which the crankshaft 22 extends (the crankshaft direction), and are arranged at a predetermined interval from each other.
  • Each partition 34 functions as a partition that partitions a space in the frame 12.
  • the above-described crosshead 40 is housed in a space defined by the top plate 31, the bottom plate 32, the side plates 33, and the partition walls 34, and located between the pair of guide plates 26.
  • the engine 1 according to the present embodiment is an in-line six-cylinder diesel engine.
  • the inside of the frame 12 is partitioned into six spaces, and the crosshead 40 is accommodated in each space.
  • a knee lever 50 is connected to each of the six crossheads 40 housed in this manner. Therefore, as shown in FIG. 5, support portions 35 for supporting each knee lever 50 are arranged on the side plate 33 of the frame 12.
  • a short cylindrical support portion 35 is provided on the side plate 33 of the frame 12.
  • the support portion 35 includes an insertion port 35a penetrating the side plate 33, a support surface 35b disposed below the insertion port 35a, and a plurality of insertion holes 35c disposed so as to surround the insertion port 35a. ing.
  • the insertion port 35a is formed as a through hole penetrating the side plate 33 in the thickness direction.
  • the insertion end 35a is configured such that the fixed end portion 54 of the knee lever 50 is inserted along a direction from the outside to the inside of the frame 12 (a direction from the right side to the left side in FIG. 6B).
  • the support surface 35b is arranged below and around the insertion port 35a, and protrudes outward from the opening edge 35d of the support portion 35, as shown in FIG. 6B. As shown in FIG. 6A, the support surface 35b extends flat along the horizontal direction as the predetermined direction, and faces upward.
  • the opening edge 35d here refers to one of the edges formed around the insertion port 35a facing the outside of the frame 12, as shown in FIG. 6B.
  • the plurality of insertion holes 35c are provided in the opening edge 35d of the support portion 35, and the pins 60 for fixing the mounting plate 55 to the side plate 33 are respectively inserted through the holes 35c. See FIG. 3 for the pin 60.
  • a receiving portion 36 is formed by swelling the side plate 33 outward (specifically, in a direction away from the piston rod 21 and the crosshead 40, rightward on the paper of FIG. 3). Is provided.
  • the receiving portion 36 can suppress interference between the knee lever 50 and the inner surface of the side plate 33 when the knee lever 50 operates in conjunction with the crosshead 40.
  • FIG. 7 is a diagram exemplifying the configuration of the knee lever 50 as viewed obliquely from below.
  • FIG. 8 is an explanatory view illustrating the operation of the knee lever 50 in conjunction with the reciprocation of the crosshead 40.
  • the knee lever 50 has the free end 51 that operates integrally with the crosshead 40, the fixed end 54 that does not operate integrally with the crosshead 40, and the fixed end 54 that is fixed to the frame 12. And a mounting plate 55 to be provided.
  • the knee lever 50 includes an upper lever 52 connected to the free end 51 and a lower lever 53 connected to the upper lever 52 and connected to the fixed end 54.
  • the upper lever 52 is an example of a “first lever”
  • the lower lever 53 is an example of a “second lever”.
  • the knee lever 50 is configured in the form of a two-armed toggle joint. That is, the connecting portion between the free end portion 51 and the upper lever 52, the connecting portion between the upper lever 52 and the lower lever 53, and the connecting portion between the lower lever 53 and the fixed end portion 54 all form a toggle joint. .
  • the upper lever 52 swings about the connection with the free end 51 as a fulcrum, as shown in FIGS. 8A to 8C.
  • the lower lever 53 swings so as to maintain the connection with the upper lever 52 while using the connection with the fixed end 54 as a fulcrum.
  • a portion of the knee lever 50 around a connecting portion between the upper lever 52 and the lower lever 53 can protrude upward.
  • the above-described receiving portion 36 provided on the side plate 33 is bulged such that the protruding portion enters, and can receive the upper lever 52 and the lower lever 53. Therefore, contact between the side plate 33 and the knee lever 50 can be suppressed.
  • the knee lever 50 can supply the lubricating oil to the crosshead 40 while operating as described above. That is, the upper lever 52 and the lower lever 53 are both hollow, and the lubricating oil flowing from the inlet 54a of the fixed end 54 passes through the lower lever 53 and the upper lever 52 in order, and from the free end 51. The liquid is discharged into the inside of the crosshead 40 (specifically, the space between the bearing 43 and the bearing shell 44) (see the arrow in FIG. 7).
  • FIG. 9A is a front view illustrating the configuration of the mounting plate 55
  • FIG. 9B is a cross-sectional view illustrating the configuration of the mounting plate 55
  • FIG. 9C is a cross-sectional view illustrating the configuration of the mounting plate 55.
  • FIG. 10A is a front view illustrating a state in which the mounting plate 55 is mounted on the support unit 35
  • FIG. 10B is a cross-sectional view illustrating a state in which the mounting plate 55 is mounted on the support unit 35.
  • FIG. 9A is a view of the fixed end portion 54 and the mounting plate 55 of the knee lever 50 as viewed from the direction of the arrow VIA in FIG.
  • FIG. 9B corresponds to a cross section taken along line IXB-IXB in FIG. 9A.
  • FIG. 9C corresponds to a cross section taken along line IXC-IXC in FIG. 9A.
  • FIG. 10A is a view in which the fixed end portion 54 is inserted into the insertion opening 35a of the support portion 35 as viewed from the direction of the arrow VIA in FIG.
  • FIG. 10B corresponds to a cross section XB-XB in FIG. 10A.
  • the fixed end 54 is formed to be insertable into the support 35 (specifically, the insertion opening 35a) provided on the side plate 33.
  • the introduction port 54a is opened in the fixed end portion 54, and the flange-like mounting plate 55 is provided on the periphery of the introduction port 54a.
  • the mounting plate 55 is configured as a disc-shaped flange provided so as to surround the introduction port 54a.
  • the outer diameter when this is regarded as a disk is at least larger than the insertion port 35a.
  • the mounting plate 55 is fastened to the opening edge 35d of the support portion 35. As shown in FIG. 3, the mounting plate 55 also functions as a stopper when the fixed end portion 54 is inserted into the support portion 35.
  • the mounting plate 55 is provided with a supported surface 55a, which is formed by cutting out a lower portion of the mounting plate 55 and faces downward, and a plurality of insertion holes 55b arranged so as to surround the introduction port 54a. Have been.
  • the supported surface 55a is disposed below the introduction port 54a, and as shown in FIGS. 9A and 9B, the lower side surface of the side surface of the disk forming the mounting plate 55 is cut out. Become.
  • the supported surface 55a extends flat along the horizontal direction as a predetermined direction, and faces downward.
  • the insertion port 35a of the support portion 35 and the introduction port 54a of the fixed end 54 are substantially coaxial. At this time, by sliding the supported surface 55a along the support surface 35b, the position of the mounting plate 55 can be adjusted in the horizontal direction.
  • the supported surface 55a When the supported surface 55a is placed on the support surface 35b, the lowering of the mounting plate 55 with respect to the support portion 35 is restricted, and at the same time, the twist of the mounting plate 55 with respect to the support portion 35 is restricted.
  • the position adjustment of the mounting plate 55 in the up-down direction and the torsional direction is completed. In this case, misalignment in the up-down direction and the torsional direction occurs due to manufacturing tolerances of the supported surface 55a and the support surface 35b.
  • the plurality of insertion holes 55b are arranged along the circumferential direction of the mounting plate 55, and each is configured so that a pin 60 for fixing the mounting plate 55 to the side plate 33 is inserted therethrough.
  • the plurality of insertion holes 55b are formed in the respective insertion holes 35c provided in the support portion 35 as shown in FIG. 10A. They are arranged so as to overlap with each other. Since the insertion holes 35c and 55b thus overlapped communicate with each other, the insertion plate 55 can be fixed to the support portion 35 by inserting the pin 60 therethrough.
  • the mounting plate 55 is configured to be fixed in a state where the supported surface 55a is placed on the support surface 35b provided on the support portion 35 of the side plate 33.
  • the insertion hole 55b provided in the mounting plate 55 is formed in an oval shape extending along the direction in which the supported surface 55a extends (horizontal direction as a predetermined direction). Therefore, even if the position of the mounting plate 55 is adjusted in the horizontal direction, the communication between the insertion hole 35c provided in the support part 35 and the insertion hole 55b provided in the mounting plate 55 can be maintained.
  • FIG. 11 is a diagram illustrating a configuration of the lower lever 53.
  • FIG. 12 is a diagram exemplifying a connecting portion between the lower lever 53 and the upper lever 52.
  • the lower lever 53 is formed by connecting two pipe portions 53a by a plate portion 53b.
  • Each of the two pipe sections 53a communicates with an inlet 54a of the fixed end 54.
  • the downstream end 53d of each conduit 53a has a flat upper surface 53f facing upward and a chamfered lower surface 53e facing downward in order to insert a bolt from above. It is said.
  • an engraved mark 53c is provided on the upper surface of the plate portion 53b so that the upper and lower portions of the lower lever 53 are not mistaken.
  • each pipe 53a communicates with an oil passage opened at the upstream end of the upper lever 52.
  • the upper lever 52 is formed by connecting two pipe sections by a plate portion, similarly to the lower lever 53.
  • the downstream end of the upper lever 52 communicates with an oil passage provided at the free end 51. This oil passage is opened in the crosshead 40 so that the lubricating oil can be discharged to the crosshead 40.
  • Knee lever position adjustment By the way, in the case of the knee lever 50 as shown in FIG. 3, due to its misalignment, dents may occur during operation, and a connection portion between the upper lever 52 and the lower lever 53 may be included. There is a possibility that a gap may occur in the movable part. This is undesirable because it causes leakage of the lubricating oil.
  • the mounting plate 55 In order to suppress misalignment, it is necessary to position the mounting plate 55 with respect to the frame 12 as precisely as possible. Under these circumstances, the mounting plate 55 must be precisely positioned with respect to the frame 12 in each of the vertical direction, the horizontal direction, and the torsion direction. .
  • the mounting plate 55 is provided with a supported surface 55a, and the supporting portion 35 of the frame 12 is provided with a supporting surface 35b.
  • the step of positioning the mounting plate 55 on the support portion 35 can be performed with the supported surface 55a placed on the support surface 35b.
  • the mounting plate 55 when the supported surface 55a and the support surface 35b are processing surfaces extending in the horizontal direction, when the supported surface 55a is placed on the support surface 35b, the mounting plate 55 , At least in the vertical and torsional directions.
  • the positioning of the mounting plate 55 can be completed only by adjusting the position of the mounting plate 55 in the horizontal direction while the device is placed on the mounting plate 55.
  • the accuracy in the torsional direction can be defined by the tolerance of the machining of the supported surface 55a and the support surface 35b. In this way, it is possible to define the positioning accuracy by the machining tolerance without leaving the quality of the positioning accuracy to the operator.
  • the insertion hole 55b on the mounting plate 55 side is formed in an oval shape extending in the horizontal direction, the mounting is performed while the pin 60 is inserted through the support portion 35 and the mounting plate 55.
  • the position of the plate 55 can be adjusted in the horizontal direction. Thereby, the positioning of the knee lever 50 becomes easy.
  • the fixed end portion 54 is not attached from the inside of the frame 12, but is inserted from the outside of the frame 12. Therefore, the fixed end 54 can be supported from below by the inner peripheral surface of the insertion port 35a.
  • the supported surface 55a and the support surface 35b are configured to extend along the horizontal direction, but are not limited to this configuration.
  • the supported surface 55a and the support surface 35b may extend in a direction inclined with respect to the horizontal direction. Regardless of the direction of extension, the positioning of the mounting plate 55 can be completed only by adjusting the position of the mounting plate 55 along that direction.
  • the insertion hole 55b provided in the attachment plate 55 is formed in an elliptical shape, but is not limited to this configuration.
  • the insertion hole 35c provided in the support portion 35 may be formed in an oval shape.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

According to the present invention, a knee lever (50) that operates so as to allow a crosshead (40) to reciprocate and that supplies lubricating oil to the crosshead (40) comprises: a free end part (51) that is connected to the crosshead (40); a fixed end part (54) that is connected to a frame (12); an introduction port (54a) that opens in the fixed end part (54); and an attachment plate (55) that is provided at a peripheral edge of the introduction port (54a) and is fixed to the frame (12). The attachment plate (55) has a supported surface (55a) that faces downward. The attachment plate (55) is fixed such that the supported surface (55a) is mounted on a support surface (35b) of the frame (12).

Description

可動式給油管およびクロスヘッド式内燃機関Movable lubrication pipe and crosshead internal combustion engine
　ここに開示する技術は、可動式給油管およびクロスヘッド式内燃機関に関する。 The technology disclosed herein relates to a movable oil supply pipe and a crosshead internal combustion engine.
　舶用内燃機関など、ボアストローク比が大きい内燃機関においては、下方からピストンを支持するピストン棒と、クランクシャフトに連接される連接棒とを連結するために、クロスヘッドと呼ばれる部品を用いることが広く知られている。 In an internal combustion engine with a large bore stroke ratio, such as a marine internal combustion engine, a component called a crosshead is widely used to connect the piston rod that supports the piston from below and the connecting rod that is connected to the crankshaft. Are known.
　例えば、特許文献１に開示されているクロスヘッドは、ピストン棒（ピストンロッド）の下端部に取り付けられ、その下端部に対して連接棒（コネクティングロッド）を回動させるクロスヘッドピン（クロスヘッドジャーナル）を備えている。このクロスヘッドピンの内部には通路（孔）が設けられており、その通路を通じて潤滑油を供給することができる。 For example, a crosshead disclosed in Patent Literature 1 is attached to a lower end of a piston rod (piston rod) and rotates a connecting rod (connecting rod) with respect to the lower end of the crosshead pin (crosshead journal). It has. A passage (hole) is provided inside the crosshead pin, and lubricating oil can be supplied through the passage.
　一方、特許文献２には、クロスヘッドに潤滑油を供給するための別の方策として、内燃機関のケーシングと、クロスヘッドとの間に可動式給油管（潤滑油供給導管）を接続することが開示されている。特許文献２に係る可動式給油管は、２本腕のトグル継手の形態に構成されている。そして、トグル継手として構成される２本腕のうち、ケーシングに接続される一方の腕には、ケーシングに固定されるカバーが設けられている。 On the other hand, in Patent Document 2, as another measure for supplying lubricating oil to the crosshead, a movable oil supply pipe (lubricating oil supply pipe) is connected between the casing of the internal combustion engine and the crosshead. It has been disclosed. The movable oil supply pipe according to Patent Literature 2 is configured in the form of a two-armed toggle joint. And, of the two arms configured as the toggle joint, one of the arms connected to the casing is provided with a cover fixed to the casing.
特開２０１５－０５７５７０号公報JP-A-2005-057570 特開平１－３１３６０９号公報JP-A-1-313609
　ところで、前記特許文献２に開示されているような可動式給油管の場合、そのミスアライメントに起因して、動作時にコジレが生じたり、可動部にて隙間が生じたりする可能性がある。このことは、潤滑油の漏出を招くため望ましくない。 By the way, in the case of a movable oil supply pipe as disclosed in Patent Document 2, there is a possibility that an erroneous alignment may occur during operation or a gap may occur in the movable part due to the misalignment. This is undesirable because it causes leakage of the lubricating oil.
　そのため、前記特許文献２に開示されている構成を実施する際には、ケーシングに対し、カバーを可能な限り精密に位置決めする必要がある。こうした事情から、カバーは、ケーシングに対して上下方向、水平方向および捩れ方向のそれぞれについて精密に位置決めされなければならないが、このことは、ケーシング内外での工数がかさむため不都合である。 Therefore, when implementing the configuration disclosed in Patent Document 2, it is necessary to position the cover with respect to the casing as precisely as possible. Under these circumstances, the cover must be precisely positioned in the vertical direction, the horizontal direction, and the torsion direction with respect to the casing, which is disadvantageous because the man-hours inside and outside the casing are increased.
　ここに開示する技術は、かかる点に鑑みてなされたものであり、その目的とするところは、可動式給油管の位置決めに要する工数を削減することにある。 技術 The technology disclosed herein is made in view of such a point, and an object thereof is to reduce the number of steps required for positioning a movable oil supply pipe.
　本開示は、内燃機関のケーシングと、ピストン棒および連接棒を連結するクロスヘッドと、の間に接続され、前記クロスヘッドの往復動を許容するように動作するとともに、該クロスヘッドに潤滑油を供給するように構成された可動式給油管に係る。この可動式給油管は、前記クロスヘッドに接続される自由端部と、前記自由端部の反対側に設けられ、前記ケーシングに接続される固定端部と、前記固定端部に開口した導入口と、前記導入口の周縁に設けられ、前記ケーシングに固定される取付板と、を備える。 The present disclosure is connected between a casing of an internal combustion engine and a crosshead connecting a piston rod and a connecting rod, operates to allow reciprocation of the crosshead, and supplies lubricating oil to the crosshead. The present invention relates to a movable oil supply pipe configured to supply. The movable oil supply pipe has a free end connected to the crosshead, a fixed end provided on the opposite side of the free end and connected to the casing, and an inlet opening to the fixed end. And a mounting plate provided on the periphery of the inlet and fixed to the casing.
　そして、前記取付板には、下方に面する被支持面が設けられ、前記取付板は、前記ケーシングに設けた支持面の上に前記被支持面が載置された状態で固定されるように構成されている。 The mounting plate is provided with a supported surface facing downward, and the mounting plate is fixed in a state where the supported surface is placed on a supporting surface provided on the casing. It is configured.
　前記の構成によれば、カバー等から構成される取付板には被支持面が設けられ、ケーシングには支持面が設けられる。そして、ケーシングに対して取付板を位置決めする工程は、被支持面を支持面上に載置した状態で行うことができる。 According to the above configuration, the mounting plate including the cover and the like is provided with the supported surface, and the casing is provided with the supporting surface. Then, the step of positioning the mounting plate with respect to the casing can be performed with the supported surface placed on the support surface.
　例えば、被支持面および支持面を水平方向に延びる加工面とした場合、支持面の上に被支持面を載置すると、取付板は、少なくとも上下方向および捩れ方向については位置決めされることになる。そうして載置された状態のまま、取付板を水平方向に位置調整するだけで、取付板の位置決めを完了することができる。 For example, when the supported surface and the support surface are working surfaces extending in the horizontal direction, when the supported surface is placed on the support surface, the mounting plate is positioned at least in the up-down direction and the torsion direction. . The positioning of the mounting plate can be completed only by adjusting the position of the mounting plate in the horizontal direction while the mounting plate is placed.
　このことは、被支持面および支持面を、水平方向とは異なる方向に延びる加工面とした場合についても同様である。いずれの方向に延ばした場合であっても、その方向に沿って取付板を位置調整するだけで、取付板の位置決めを完了することが可能となる。これにより、可動式給油管の位置決めに要する工数を削減することができる。 The same applies to the case where the supported surface and the support surface are machined surfaces extending in a direction different from the horizontal direction. Regardless of the direction in which the mounting plate is extended, the positioning of the mounting plate can be completed only by adjusting the position of the mounting plate along that direction. Thereby, the man-hour required for positioning the movable oil supply pipe can be reduced.
　なお、前述のように被支持面および支持面を水平方向に延びる加工面とした場合、例えば捩れ方向の精度については、被支持面および支持面の機械加工の公差によって規定することができる。このように、位置決め精度の善し悪しを作業者に委ねることなく、機械加工の公差によって規定することが可能となる。 Note that, as described above, when the supported surface and the supporting surface are machined surfaces extending in the horizontal direction, for example, the accuracy in the torsion direction can be defined by the tolerance of machining of the supported surface and the supporting surface. In this way, it is possible to define the positioning accuracy by the machining tolerance without leaving the quality of the positioning accuracy to the operator.
　また、前記被支持面および前記支持面は、双方とも所定方向に沿って延び、前記取付板および前記ケーシングには、該ケーシングに前記取付板を固定するためのピンが挿し通される挿通孔が設けられ、前記挿通孔のうち、前記取付板または前記ケーシングに設けた一方は、前記所定方向に沿って延びる長円状に形成されている、としてもよい。 Further, both the supported surface and the support surface extend along a predetermined direction, and the mounting plate and the casing have an insertion hole through which a pin for fixing the mounting plate to the casing is inserted. One of the insertion holes provided in the attachment plate or the casing may be formed in an oval shape extending along the predetermined direction.
　前記の構成によれば、ケーシングおよび取付板にピンを挿し通したまま、取付板を所定方向に位置調整することが可能となる。これにより、可動式給油管の位置決めが容易になる。 According to the above configuration, it is possible to adjust the position of the mounting plate in a predetermined direction while the pins are inserted through the casing and the mounting plate. This facilitates positioning of the movable oil supply pipe.
　また、前記被支持面および前記支持面は、双方とも水平方向に沿って延びる、としてもよい。 支持 The supported surface and the support surface may both extend in a horizontal direction.
　前述のように、支持面の上に被支持面を載置すると、取付板は、少なくとも上下方向および捩れ方向については位置決めされることになる。そうして載置された状態のまま、取付板を水平方向に位置調整するだけで、取付板の位置決めを完了することができるようになる。 As described above, when the supported surface is placed on the support surface, the mounting plate is positioned at least in the vertical direction and the torsion direction. The positioning of the mounting plate can be completed only by adjusting the position of the mounting plate in the horizontal direction in the state of being placed on the mounting plate.
　また、前記ケーシングには、該ケーシングの外部から内部へ向かって前記固定端部が挿入される挿入口が設けられ、前記支持面は、前記挿入口の周縁かつ下方に設けられている、としてもよい。 Further, the casing may be provided with an insertion port into which the fixed end is inserted from the outside to the inside of the casing, and the support surface may be provided at a periphery and below the insertion port. Good.
　前記の構成によれば、固定端部は、ケーシングの内部から挿入されるのではなく、ケーシングの外部から挿入されるようになる。挿入口の内周面によって、固定端部を下方から支持することができる。 According to the above configuration, the fixed end is not inserted from the inside of the casing, but is inserted from the outside of the casing. The fixed end can be supported from below by the inner peripheral surface of the insertion opening.
　また、前記可動式給油管は、前記自由端部に連なる第１レバーと、前記第１レバーと連結され、かつ前記固定端部に連なる第２レバーと、を備え、前記ケーシングには、前記クロスヘッドの往復動に連動する前記第１レバーおよび前記第２レバーを受け入れるように外方へ膨出させた受入部が設けられている、としてもよい。 Further, the movable oil supply pipe includes a first lever connected to the free end, and a second lever connected to the first lever and connected to the fixed end. A receiving portion bulged outward to receive the first lever and the second lever interlocked with the reciprocation of the head may be provided.
　前記の構成によれば、第１レバーまたは第２レバーと、ケーシングとの干渉を抑制することができる。 According to the above configuration, it is possible to suppress interference between the first lever or the second lever and the casing.
　また、前記取付板は、前記導入口を取り囲む円板状のフランジとして形成され、前記被支持面は、前記円板の側面のうち、下側の側面を切り欠いて成る、としてもよい。 The mounting plate may be formed as a disk-shaped flange surrounding the inlet, and the supported surface may be formed by cutting out a lower side surface of the side surface of the disk.
　また、本開示は、前記可動式給油管を備えるクロスヘッド式内燃機関にも係る。 The present disclosure also relates to a crosshead internal combustion engine including the movable oil supply pipe.
　以上説明したように、前記の構成によれば、可動式給油管の位置決めに要する工数を削減することができる。 As described above, according to the above configuration, the man-hour required for positioning the movable oil supply pipe can be reduced.
図１は、クロスヘッド式内燃機関の構成を例示する概略図である。FIG. 1 is a schematic view illustrating the configuration of a crosshead type internal combustion engine. 図２は、クロスヘッドの構成を例示する分解斜視図である。FIG. 2 is an exploded perspective view illustrating the configuration of the crosshead. 図３は、クロスヘッドおよびニーレバーの構成を例示する図である。FIG. 3 is a diagram illustrating the configuration of the crosshead and the knee lever. 図４は、架構の構成を例示する正面図である。FIG. 4 is a front view illustrating the configuration of the frame. 図５は、架構の構成を例示する側面図である。FIG. 5 is a side view illustrating the configuration of the frame. 図６Ａは、支持部の構成を例示する正面図である。FIG. 6A is a front view illustrating the configuration of the support unit. 図６Ｂは、支持部の構成を例示する断面図である。FIG. 6B is a cross-sectional view illustrating the configuration of the support unit. 図７は、ニーレバーの構成を斜め下方から見て例示する図である。FIG. 7 is a diagram illustrating the configuration of the knee lever as viewed obliquely from below. 図８は、クロスヘッドの往復動に連動したニーレバーの動作を例示する説明図である。FIG. 8 is an explanatory view illustrating the operation of the knee lever in conjunction with the reciprocation of the crosshead. 図９Ａは、取付板の構成を例示する正面図である。FIG. 9A is a front view illustrating the configuration of the mounting plate. 図９Ｂは、取付板の構成を例示する断面図である。FIG. 9B is a cross-sectional view illustrating the configuration of the mounting plate. 図９Ｃは、取付板の構成を例示する断面図である。FIG. 9C is a cross-sectional view illustrating the configuration of the mounting plate. 図１０Ａは、支持部に取付板を載置した状態を例示する正面図である。FIG. 10A is a front view illustrating a state where the mounting plate is placed on the support. 図１０Ｂは、支持部に取付板を載置した状態を例示する断面図である。FIG. 10B is a cross-sectional view illustrating a state where the mounting plate is placed on the support. 図１１は、ロアレバーの構成を例示する図である。FIG. 11 is a diagram illustrating the configuration of the lower lever. 図１２は、ロアレバーとアッパーレバーとの連結部を例示する図である。FIG. 12 is a diagram illustrating a connecting portion between the lower lever and the upper lever.
　以下、本開示の実施形態を図面に基づいて説明する。なお、以下の説明は例示である。図１は、クロスヘッド式内燃機関（以下、単に「エンジン１」という）の構成を例示する概略図である。 Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. The following description is an example. FIG. 1 is a schematic diagram illustrating the configuration of a crosshead type internal combustion engine (hereinafter, simply referred to as “engine 1”).
　エンジン１は、複数のシリンダを備えた直列多気筒式のディーゼルエンジンである。このエンジン１は、ユニフロー掃気方式を採用した２ストローク１サイクル機関として構成されており、タンカー、コンテナ船、自動車運搬船等、大型の船舶に搭載される。エンジン１の出力軸は、不図示のプロペラに連結されている。エンジン１が運転することにより、その出力がプロペラに伝達されて船舶が推進するようになっている。 The engine 1 is an in-line multi-cylinder diesel engine having a plurality of cylinders. The engine 1 is configured as a two-stroke, one-cycle engine employing a uniflow scavenging method, and is mounted on a large ship such as a tanker, a container ship, or a car carrier. The output shaft of the engine 1 is connected to a propeller (not shown). When the engine 1 is operated, its output is transmitted to the propeller and the boat is propelled.
　また、エンジン１は、そのロングストローク化を実現するべく、いわゆるクロスヘッド式内燃機関として構成されている。すなわち、このエンジン１においては、下方からピストン１５を支持するピストン棒２１と、クランクシャフト２２に連接される連接棒２５と、がクロスヘッド４０により連結されている。 The engine 1 is configured as a so-called crosshead type internal combustion engine in order to realize a longer stroke. That is, in the engine 1, the piston rod 21 that supports the piston 15 from below and the connecting rod 25 that is connected to the crankshaft 22 are connected by the crosshead 40.
　（１）主要構成
　以下、エンジン１の要部について説明する。 (1) Main Configuration Hereinafter, main parts of the engine 1 will be described.
　図１に示すように、エンジン１は、台板１１と、台板１１上に設けられ、本実施形態に係るケーシングを成す架構１２と、架構１２上に設けられるシリンダジャケット１３と、を備えている。台板１１、架構１２およびシリンダジャケット１３は、上下方向に延在する複数のタイボルトおよびナットにより締結されている。 As shown in FIG. 1, the engine 1 includes a base plate 11, a frame 12 provided on the base plate 11 and forming a casing according to the present embodiment, and a cylinder jacket 13 provided on the frame 12. I have. The base plate 11, the frame 12, and the cylinder jacket 13 are fastened by a plurality of tie bolts and nuts extending vertically.
　シリンダジャケット１３内には、内筒としてのシリンダライナ１４が配置されている。シリンダライナ１４の内部にはピストン１５が配置されている。ピストン１５は、シリンダライナ１４の内壁に沿って上下方向に往復動する。また、シリンダライナ１４の上部にはシリンダカバー１６が固定されている。シリンダカバー１６には排気弁１７が設けられている。排気弁１７は、シリンダライナ１４、ピストン１５およびシリンダカバー１６とともに燃焼室１８を区画する。排気弁１７は、燃焼室１８と排気管１９との間を開閉するものである。 シ リ ン ダ A cylinder liner 14 as an inner cylinder is disposed in the cylinder jacket 13. A piston 15 is arranged inside the cylinder liner 14. The piston 15 reciprocates vertically along the inner wall of the cylinder liner 14. A cylinder cover 16 is fixed to an upper portion of the cylinder liner 14. An exhaust valve 17 is provided on the cylinder cover 16. The exhaust valve 17 defines a combustion chamber 18 together with the cylinder liner 14, the piston 15, and the cylinder cover 16. The exhaust valve 17 opens and closes a space between the combustion chamber 18 and the exhaust pipe 19.
　よって、燃焼室１８に対し、燃料とガスとが供給されると、燃焼室１８内で燃焼が生じる。この燃焼で発生したエネルギーによってピストン１５がピストン軸方向に往復動する。このとき、排気弁１７が作動して燃焼室１８が開放されると、燃焼によって生じた排ガスが排気管１９に押し出される一方、不図示の掃気ポートを介して燃焼室１８にガスが導入される。 Therefore, when fuel and gas are supplied to the combustion chamber 18, combustion occurs in the combustion chamber 18. The piston 15 reciprocates in the axial direction of the piston due to the energy generated by this combustion. At this time, when the exhaust valve 17 is operated and the combustion chamber 18 is opened, the exhaust gas generated by the combustion is pushed out to the exhaust pipe 19, while the gas is introduced into the combustion chamber 18 via a scavenging port (not shown). .
　一方、ピストン１５の下端部には、ピストン棒２１の上端部が連結されている。台板１１は、いわゆるクランクケースを構成しており、軸受２３によって回転自在に支持されたクランクシャフト２２を収容している。クランクシャフト２２には、連接棒２５の下端部が、クランク２４を介して回動自在に連結されている。 On the other hand, the lower end of the piston 15 is connected to the upper end of the piston rod 21. The base plate 11 forms a so-called crankcase, and houses a crankshaft 22 rotatably supported by a bearing 23. A lower end of a connecting rod 25 is rotatably connected to the crankshaft 22 via a crank 24.
　架構１２の内部には、上下方向に沿って設けられる一対のガイド板２６が、所定の間隔を空けて互いに向い合うように配置されている。一対のガイド板２６の間には、前述のクロスヘッド４０が上下動自在に配置されている。クロスヘッド４０は、ピストン棒２１の下端部と連接棒２５の上端部とを連結しており、その上下動は、ガイド板２６によって案内される。クロスヘッド４０は、ピストン棒２１に対しては一体的に上下動するように接続されている一方、連接棒２５に対しては連接棒２５の上端部を支点として回動させるように接続されている。 一 対 A pair of guide plates 26 provided along the vertical direction are arranged inside the frame 12 so as to face each other at a predetermined interval. The crosshead 40 described above is disposed between the pair of guide plates 26 so as to be vertically movable. The crosshead 40 connects the lower end of the piston rod 21 and the upper end of the connecting rod 25, and its vertical movement is guided by the guide plate 26. The crosshead 40 is connected to the piston rod 21 so as to move up and down integrally, while connected to the connecting rod 25 so as to rotate about the upper end of the connecting rod 25 as a fulcrum. I have.
　よって、ピストン１５が上下方向に往復動すると、ピストン１５とともにピストン棒２１が上下に往復動する。これにより、ピストン棒２１に連結されたクロスヘッド４０は、ガイド板２６に沿って上下方向に往復動する。クロスヘッド４０はまた、連接棒２５を回動させる。そして、連接棒２５の下端部に接続されるクランク２４がクランク連動し、クランクシャフト２２を回転させる。 Therefore, when the piston 15 reciprocates vertically, the piston rod 21 reciprocates up and down together with the piston 15. As a result, the crosshead 40 connected to the piston rod 21 reciprocates vertically along the guide plate 26. The crosshead 40 also rotates the connecting rod 25. Then, the crank 24 connected to the lower end of the connecting rod 25 interlocks with the crank and rotates the crankshaft 22.
　クロスヘッド４０には、適宜、潤滑油を供給することが求められる。そこで、図１に鎖線で示すように、架構１２とクロスヘッド４０との間には、可動式給油管として構成されたニーレバー５０が設けられている。このニーレバー５０は、トグル状の継手を介して連結された複数のパイプから成り、クロスヘッド４０の往復動を許容するように動作する（図８も参照）とともに、架構１２の外部から供給された潤滑油をクロスヘッド４０に供給する。 It is required that the lubricating oil be appropriately supplied to the crosshead 40. Therefore, as indicated by a chain line in FIG. 1, a knee lever 50 configured as a movable oil supply pipe is provided between the frame 12 and the crosshead 40. The knee lever 50 is composed of a plurality of pipes connected via a toggle-shaped joint, operates so as to allow the crosshead 40 to reciprocate (see also FIG. 8), and is supplied from outside the frame 12. The lubricating oil is supplied to the crosshead 40.
　（２）クロスヘッド
　ここで、クロスヘッド４０の構成について簡単に説明をする。 (2) Crosshead Here, the configuration of the crosshead 40 will be briefly described.
　図２は、クロスヘッド４０の構成を例示する分解斜視図である。また、図３は、クロスヘッド４０およびニーレバー５０の構成を例示する図である。 FIG. 2 is an exploded perspective view illustrating the configuration of the crosshead 40. FIG. 3 is a diagram illustrating the configuration of the crosshead 40 and the knee lever 50.
　具体的に、クロスヘッド４０は、ピストン棒２１の下端部に取り付けられ、この下端部に対して連接棒２５を回動させるクロスヘッドピン４１と、クロスヘッドピン４１の両端に取り付けられる一対のガイドシュー４２と、連接棒２５の上端部に設けられ、クロスヘッドピン４１を下面側から回動自在に支持する軸受４３と、クロスヘッドピン４１の上面側に配置されるキャップ部材４５と、を備えている。 Specifically, the crosshead 40 is attached to a lower end of the piston rod 21, and a crosshead pin 41 for rotating the connecting rod 25 with respect to the lower end, and a pair of guide shoes 42 attached to both ends of the crosshead pin 41. And a bearing 43 provided at the upper end of the connecting rod 25 and rotatably supporting the crosshead pin 41 from the lower surface side, and a cap member 45 disposed on the upper surface side of the crosshead pin 41.
　詳しくは、クロスヘッドピン４１は、図１および図３の紙面に直交する方向に延びる円柱状に形成されており、その上面４１ａの一部分が、略平面上に切り欠けられている。この上面４１ａにピストン棒２１の下端部を締結することで、クロスヘッドピン４１とピストン棒２１とを一体的に上下動させることができる。 Specifically, the crosshead pin 41 is formed in a column shape extending in a direction perpendicular to the paper surface of FIGS. 1 and 3, and a part of the upper surface 41a is cut out on a substantially plane. By fastening the lower end of the piston rod 21 to the upper surface 41a, the crosshead pin 41 and the piston rod 21 can be moved up and down integrally.
　ガイドシュー４２は、クロスヘッドピン４１に対して回動不能に取り付けられており、ガイド板２６に対して摺接するように構成されている。この摺接を利用して、クロスヘッド４０の往復動を案内することができる。 The guide shoe 42 is non-rotatably attached to the crosshead pin 41 and is configured to slide on the guide plate 26. By utilizing this sliding contact, reciprocation of the crosshead 40 can be guided.
　軸受４３は、クロスヘッドピン４１の中心軸Ｏに直交する断面で見たときに、上方に向かって開放された略半円状に凹陥している。軸受４３には、クロスヘッドピン４１が挿入される。軸受４３にクロスヘッドピン４１を挿入することで、連接棒２５は、クロスヘッドピン４１に対し、軸受４３を支点として回動自在となる。 The bearing 43 is recessed in a substantially semicircular shape that is open upward when viewed in a cross section orthogonal to the center axis O of the crosshead pin 41. The crosshead pin 41 is inserted into the bearing 43. By inserting the crosshead pin 41 into the bearing 43, the connecting rod 25 is rotatable about the crosshead pin 41 with the bearing 43 as a fulcrum.
　図２に示すように、軸受４３と、クロスヘッドピン４１の下半部との間には、軸受シェル４４が配置されている。この軸受シェル４４は、いわゆる軸受メタルであって、前記中心軸Ｏに直交する断面で見たときに、円弧状の横断面を有する。軸受シェル４４は、クロスヘッドピン４１の外面（特に、下半部の外面）に対して摺接するとともに、この外面を下方から支持するようになっている。また、軸受シェル４４には、これを肉厚方向に貫通する複数の貫通溝４４ａが設けられている。これら貫通溝４４ａは、軸受４３の内壁に開口した油路４３ａに連通している。 軸 受 As shown in FIG. 2, a bearing shell 44 is arranged between the bearing 43 and the lower half of the crosshead pin 41. The bearing shell 44 is a so-called bearing metal, and has an arc-shaped cross section when viewed in a section orthogonal to the central axis O. The bearing shell 44 comes into sliding contact with the outer surface (particularly, the outer surface of the lower half) of the crosshead pin 41 and supports the outer surface from below. The bearing shell 44 is provided with a plurality of through grooves 44a penetrating the bearing shell 44 in the thickness direction. These through grooves 44 a communicate with an oil passage 43 a opened on the inner wall of the bearing 43.
　図３に示すように、軸受４３と軸受シェル４４との間にはスペースが設けられており、このスペースに対し、前述のニーレバー５０から潤滑油が吐出されるように構成されている。 (3) As shown in FIG. 3, a space is provided between the bearing 43 and the bearing shell 44, and lubricating oil is discharged from the knee lever 50 into this space.
　このために、ニーレバー５０の一端部は、クロスヘッド４０の軸受４３に接続されている。この一端部は、クロスヘッド４０と一体的に動作する自由端部５１として構成されており、クロスヘッド４０に潤滑油を吐出するべく、軸受４３と軸受シェル４４との間のスペースに開口している。 た め For this purpose, one end of the knee lever 50 is connected to the bearing 43 of the crosshead 40. This one end is configured as a free end 51 that operates integrally with the crosshead 40, and opens into a space between the bearing 43 and the bearing shell 44 to discharge the lubricating oil to the crosshead 40. I have.
　一方、ニーレバー５０の他端部、つまりニーレバー５０において自由端部５１とは反対側に設けられた他端部は、架構１２の側板３３に接続されている。この他端部は、クロスヘッド４０と一体的に動作しない固定端部５４として構成されており、外部から潤滑油を取り込むべく、固定端部５４には導入口５４ａが開口している。 On the other hand, the other end of the knee lever 50, that is, the other end provided on the opposite side of the free end 51 in the knee lever 50 is connected to the side plate 33 of the frame 12. The other end is configured as a fixed end 54 that does not operate integrally with the crosshead 40. The fixed end 54 has an inlet 54a in order to take in lubricating oil from outside.
　そして、導入口５４ａの周縁には、架構１２に固定される取付板５５が設けられている。この取付板５５は、架構１２の側板３３に設けた支持部３５によって支持されるようになっている。 A mounting plate 55 fixed to the frame 12 is provided on the periphery of the introduction port 54a. The mounting plate 55 is supported by a support 35 provided on the side plate 33 of the frame 12.
　（３）架構
　以下、ニーレバー５０について詳述するに先だって、その固定端部５４が接続される架構１２、および、その側板３３に設けた支持部３５の構成について詳細に説明をする。 (3) Frame Before the knee lever 50 is described in detail, the structure of the frame 12 to which the fixed end 54 is connected and the configuration of the support portion 35 provided on the side plate 33 will be described in detail.
　図４は架構１２の構成を例示する正面図であり、図５は架構１２の構成を例示する側面図である。また、図６Ａは支持部３５の構成を例示する正面図であり、図６Ｂは支持部３５の構成を例示する断面図である。ここで、図６Ａは、架構１２からニーレバー５０を取り外した状態を、図３の矢印VIA方向から見た矢視図である。また図６Ｂは、図６ＡにおけるVIB－VIB断面に相当する。 FIG. 4 is a front view illustrating the configuration of the frame 12, and FIG. 5 is a side view illustrating the configuration of the frame 12. FIG. 6A is a front view illustrating the configuration of the support unit 35, and FIG. 6B is a cross-sectional view illustrating the configuration of the support unit 35. Here, FIG. 6A is a view in which the knee lever 50 is removed from the frame 12 as viewed from the direction of the arrow VIA in FIG. FIG. 6B corresponds to a section taken along the line VIB-VIB in FIG. 6A.
　図４に示すように、架構１２は、天板３１と、底板３２と、側板３３と、複数の隔壁３４と、から構成されている。天板３１は、シリンダジャケット１３に配置されており、架構１２の頂部を成す。底板３２は、台板１１に接続されていて架構１２の底部を成す。側板３３は、架構１２における左右の側部を成す。側板３３の下端部は、底板３２に接続されており、側板３３の上端部は、天板３１に接続される。 As shown in FIG. 4, the frame 12 includes a top plate 31, a bottom plate 32, a side plate 33, and a plurality of partition walls 34. The top plate 31 is arranged on the cylinder jacket 13 and forms the top of the frame 12. The bottom plate 32 is connected to the base plate 11 and forms the bottom of the frame 12. The side plates 33 form left and right sides of the frame 12. The lower end of the side plate 33 is connected to the bottom plate 32, and the upper end of the side plate 33 is connected to the top plate 31.
　複数の隔壁３４は、クランクシャフト２２が延びる方向（クランク軸方向）に沿って並んでおり、互いに所定間隔を空けて配置されている。各隔壁３４は、架構１２内の空間を仕切るパーティションとして機能する。 The plurality of partition walls 34 are arranged along the direction in which the crankshaft 22 extends (the crankshaft direction), and are arranged at a predetermined interval from each other. Each partition 34 functions as a partition that partitions a space in the frame 12.
　前述のクロスヘッド４０は、前記天板３１と、底板３２と、側板３３と、各隔壁３４によって区画されかつ一対のガイド板２６の間に位置する空間に収容されるようになっている。 The above-described crosshead 40 is housed in a space defined by the top plate 31, the bottom plate 32, the side plates 33, and the partition walls 34, and located between the pair of guide plates 26.
　本実施形態に係るエンジン１は、直列６気筒式のディーゼルエンジンである。これを受けて、架構１２内は６つの空間に仕切られており、各空間にクロスヘッド４０が収容されている。そうして収容された６つのクロスヘッド４０のそれぞれに、ニーレバー５０が接続されている。そのため、図５に示すように、架構１２の側板３３には、各ニーレバー５０を支持するための支持部３５が並んでいる。 The engine 1 according to the present embodiment is an in-line six-cylinder diesel engine. In response to this, the inside of the frame 12 is partitioned into six spaces, and the crosshead 40 is accommodated in each space. A knee lever 50 is connected to each of the six crossheads 40 housed in this manner. Therefore, as shown in FIG. 5, support portions 35 for supporting each knee lever 50 are arranged on the side plate 33 of the frame 12.
　詳しくは、図６Ａおよび図６Ｂに示すように、架構１２の側板３３には、短筒状の支持部３５が設けられている。この支持部３５には、側板３３を貫く挿入口３５ａと、挿入口３５ａの下方に配置される支持面３５ｂと、挿入口３５ａを取り囲むように配置された複数の挿通孔３５ｃと、が設けられている。 Specifically, as shown in FIGS. 6A and 6B, a short cylindrical support portion 35 is provided on the side plate 33 of the frame 12. The support portion 35 includes an insertion port 35a penetrating the side plate 33, a support surface 35b disposed below the insertion port 35a, and a plurality of insertion holes 35c disposed so as to surround the insertion port 35a. ing.
　さらに詳しくは、挿入口３５ａは、側板３３を板厚方向に貫通する貫通孔として形成されている。この挿入口３５ａは、架構１２の外部から内部へ向かう方向（図６Ｂの紙面右側から左側へ向かう方向）に沿って、ニーレバー５０の固定端部５４が挿入されるように構成されている。 More specifically, the insertion port 35a is formed as a through hole penetrating the side plate 33 in the thickness direction. The insertion end 35a is configured such that the fixed end portion 54 of the knee lever 50 is inserted along a direction from the outside to the inside of the frame 12 (a direction from the right side to the left side in FIG. 6B).
　また、支持面３５ｂは、挿入口３５ａの周縁かつ下方に配置されており、図６Ｂに示すように、支持部３５の開口縁３５ｄから外方に向かって突出している。図６Ａに示すように、支持面３５ｂは、所定方向としての水平方向に沿って平坦に延びており、上方向に面している。なお、ここでいう開口縁３５ｄとは、図６Ｂに示すように、挿入口３５ａの周囲に形成される縁部のうち、架構１２の外部に面する一方を指す。 支持 The support surface 35b is arranged below and around the insertion port 35a, and protrudes outward from the opening edge 35d of the support portion 35, as shown in FIG. 6B. As shown in FIG. 6A, the support surface 35b extends flat along the horizontal direction as the predetermined direction, and faces upward. In addition, the opening edge 35d here refers to one of the edges formed around the insertion port 35a facing the outside of the frame 12, as shown in FIG. 6B.
　また、複数の挿通孔３５ｃは、支持部３５の開口縁３５ｄに設けられており、それぞれ、前述の取付板５５を側板３３に固定するためのピン６０が挿し通されるようになっている。ピン６０については図３を参照されたい。 The plurality of insertion holes 35c are provided in the opening edge 35d of the support portion 35, and the pins 60 for fixing the mounting plate 55 to the side plate 33 are respectively inserted through the holes 35c. See FIG. 3 for the pin 60.
　また、各支持部３５の上側には、側板３３を外方（具体的には、ピストン棒２１およびクロスヘッド４０から離れる方向であり、図３の紙面右方）へ膨出させた受入部３６が設けられている。この受入部３６は、クロスヘッド４０に連動してニーレバー５０が動作したときに、このニーレバー５０と、側板３３の内面と、が干渉するのを抑制することができる。 On the upper side of each support portion 35, a receiving portion 36 is formed by swelling the side plate 33 outward (specifically, in a direction away from the piston rod 21 and the crosshead 40, rightward on the paper of FIG. 3). Is provided. The receiving portion 36 can suppress interference between the knee lever 50 and the inner surface of the side plate 33 when the knee lever 50 operates in conjunction with the crosshead 40.
　（４）ニーレバー
　以下、ニーレバー５０の構成について詳細に説明をする。 (4) Knee lever Hereinafter, the configuration of the knee lever 50 will be described in detail.
　図７は、ニーレバー５０の構成を斜め下方から見て例示する図である。また図８は、クロスヘッド４０の往復動に連動したニーレバー５０の動作を例示する説明図である。前述のように、ニーレバー５０は、クロスヘッド４０と一体的に動作する自由端部５１と、クロスヘッド４０と一体的に動作しない固定端部５４と、固定端部５４に設けられ架構１２に固定される取付板５５と、を備えている。 FIG. 7 is a diagram exemplifying the configuration of the knee lever 50 as viewed obliquely from below. FIG. 8 is an explanatory view illustrating the operation of the knee lever 50 in conjunction with the reciprocation of the crosshead 40. As described above, the knee lever 50 has the free end 51 that operates integrally with the crosshead 40, the fixed end 54 that does not operate integrally with the crosshead 40, and the fixed end 54 that is fixed to the frame 12. And a mounting plate 55 to be provided.
　これに加えて、ニーレバー５０は、自由端部５１に連なるアッパーレバー５２と、このアッパーレバー５２と連結され、かつ固定端部５４に連なるロアレバー５３と、を備えている。ここで、アッパーレバー５２は「第１レバー」の例示であり、ロアレバー５３は「第２レバー」の例示である。 ニ ー In addition, the knee lever 50 includes an upper lever 52 connected to the free end 51 and a lower lever 53 connected to the upper lever 52 and connected to the fixed end 54. Here, the upper lever 52 is an example of a “first lever”, and the lower lever 53 is an example of a “second lever”.
　ニーレバー５０は、２本腕のトグル継手の形態に構成されている。すなわち、自由端部５１とアッパーレバー５２との連結部、アッパーレバー５２とロアレバー５３との連結部、および、ロアレバー５３と固定端部５４との連結部は、いずれも、トグル状の継手をなす。 The knee lever 50 is configured in the form of a two-armed toggle joint. That is, the connecting portion between the free end portion 51 and the upper lever 52, the connecting portion between the upper lever 52 and the lower lever 53, and the connecting portion between the lower lever 53 and the fixed end portion 54 all form a toggle joint. .
　よって、クロスヘッド４０が上下に往復移動をすると、アッパーレバー５２は、図８の（ａ）～（ｃ）に示すように、自由端部５１との連結部を支点として揺動する。これに連動して、ロアレバー５３は、固定端部５４との連結部を支点としながらも、アッパーレバー５２との連結を保持するように揺動することになる。 Therefore, when the crosshead 40 reciprocates up and down, the upper lever 52 swings about the connection with the free end 51 as a fulcrum, as shown in FIGS. 8A to 8C. In conjunction with this, the lower lever 53 swings so as to maintain the connection with the upper lever 52 while using the connection with the fixed end 54 as a fulcrum.
　図８の（ｂ）に示すように、ニーレバー５０のうち、アッパーレバー５２とロアレバー５３との連結部周辺の部位は、上方に向かって突出し得る。しかしながら、側板３３に設けられた前述の受入部３６は、そうして突出した部位が入り込むように膨出しており、アッパーレバー５２とロアレバー５３を受け入れることができる。このため、側板３３とニーレバー５０との接触を抑制することができる。 (8) As shown in FIG. 8B, a portion of the knee lever 50 around a connecting portion between the upper lever 52 and the lower lever 53 can protrude upward. However, the above-described receiving portion 36 provided on the side plate 33 is bulged such that the protruding portion enters, and can receive the upper lever 52 and the lower lever 53. Therefore, contact between the side plate 33 and the knee lever 50 can be suppressed.
　また、ニーレバー５０は、前述のようにして動作しながらも、クロスヘッド４０へと潤滑油を供給することができる。すなわち、アッパーレバー５２およびロアレバー５３は、双方とも中空であり、固定端部５４の導入口５４ａから流し込まれた潤滑油は、ロアレバー５３とアッパーレバー５２を順番に通過して、自由端部５１からクロスヘッド４０の内部（具体的には、軸受４３と軸受シェル４４との間のスペース）に吐出されるようになっている（図７の矢印を参照）。 The knee lever 50 can supply the lubricating oil to the crosshead 40 while operating as described above. That is, the upper lever 52 and the lower lever 53 are both hollow, and the lubricating oil flowing from the inlet 54a of the fixed end 54 passes through the lower lever 53 and the upper lever 52 in order, and from the free end 51. The liquid is discharged into the inside of the crosshead 40 (specifically, the space between the bearing 43 and the bearing shell 44) (see the arrow in FIG. 7).
　以下、潤滑油の流れ方向上流側から順に、ニーレバー５０の構成について説明をする。 Hereinafter, the configuration of the knee lever 50 will be described in order from the upstream side in the lubricating oil flow direction.
　－固定端部および取付板－
　図９Ａは取付板５５の構成を例示する正面図であり、図９Ｂは取付板５５の構成を例示する断面図であり、図９Ｃは取付板５５の構成を例示する断面図である。また、図１０Ａは支持部３５に取付板５５を載置した状態を例示する正面図であり、図１０Ｂは支持部３５に取付板５５を載置した状態を例示する断面図である。 －Fixed end and mounting plate－
9A is a front view illustrating the configuration of the mounting plate 55, FIG. 9B is a cross-sectional view illustrating the configuration of the mounting plate 55, and FIG. 9C is a cross-sectional view illustrating the configuration of the mounting plate 55. FIG. 10A is a front view illustrating a state in which the mounting plate 55 is mounted on the support unit 35, and FIG. 10B is a cross-sectional view illustrating a state in which the mounting plate 55 is mounted on the support unit 35.
　ここで、図９Ａは、ニーレバー５０における固定端部５４および取付板５５を、図３の矢印VIA方向から見た矢視図である。また、図９Ｂは、図９ＡにおけるIXB－IXB断面に相当する。同様に、図９Ｃは、図９ＡにおけるIXC－IXC断面に相当する。また、図１０Ａは、支持部３５の挿入口３５ａに対して固定端部５４を挿入した状態を、図３の矢印VIA方向から見た矢視図である。また、図１０Ｂは、図１０ＡにおけるXB－XB断面に相当する。 FIG. 9A is a view of the fixed end portion 54 and the mounting plate 55 of the knee lever 50 as viewed from the direction of the arrow VIA in FIG. FIG. 9B corresponds to a cross section taken along line IXB-IXB in FIG. 9A. Similarly, FIG. 9C corresponds to a cross section taken along line IXC-IXC in FIG. 9A. FIG. 10A is a view in which the fixed end portion 54 is inserted into the insertion opening 35a of the support portion 35 as viewed from the direction of the arrow VIA in FIG. FIG. 10B corresponds to a cross section XB-XB in FIG. 10A.
　固定端部５４は、側板３３に設けた支持部３５（具体的には挿入口３５ａ）に対し挿入可能に形成されている。前述のように、固定端部５４には導入口５４ａが開口しており、その導入口５４ａの周縁にはフランジ状の取付板５５が設けられている。 The fixed end 54 is formed to be insertable into the support 35 (specifically, the insertion opening 35a) provided on the side plate 33. As described above, the introduction port 54a is opened in the fixed end portion 54, and the flange-like mounting plate 55 is provided on the periphery of the introduction port 54a.
　具体的に、取付板５５は、導入口５４ａを取り囲むように設けられた、円板状のフランジとして構成されている。これを円板とみなしたときの外径は、少なくとも挿入口３５ａよりも大径である。取付板５５は、支持部３５の開口縁３５ｄに締結される。図３に示すように、取付板５５は、支持部３５に固定端部５４を挿入したときの抜け止めとしても機能する。 Specifically, the mounting plate 55 is configured as a disc-shaped flange provided so as to surround the introduction port 54a. The outer diameter when this is regarded as a disk is at least larger than the insertion port 35a. The mounting plate 55 is fastened to the opening edge 35d of the support portion 35. As shown in FIG. 3, the mounting plate 55 also functions as a stopper when the fixed end portion 54 is inserted into the support portion 35.
　そして、取付板５５には、この取付板５５の下部を切り欠いて成り、かつ下方に面する被支持面５５ａと、導入口５４ａを取り囲むように配置された複数の挿通孔５５ｂと、が設けられている。 The mounting plate 55 is provided with a supported surface 55a, which is formed by cutting out a lower portion of the mounting plate 55 and faces downward, and a plurality of insertion holes 55b arranged so as to surround the introduction port 54a. Have been.
　詳しくは、被支持面５５ａは、導入口５４ａの下方に配置されており、図９Ａ～図９Ｂに示すように、取付板５５を成す円板の側面のうち、下側の側面を切り欠いて成る。また、被支持面５５ａは、所定方向としての水平方向に沿って平坦に延びており、下方向に面している。 More specifically, the supported surface 55a is disposed below the introduction port 54a, and as shown in FIGS. 9A and 9B, the lower side surface of the side surface of the disk forming the mounting plate 55 is cut out. Become. The supported surface 55a extends flat along the horizontal direction as a predetermined direction, and faces downward.
　図１０Ａ～図１０Ｂに示すように、支持部３５の挿入口３５ａに固定端部５４を挿入するとともに、この挿入口３５ａの開口縁３５ｄに対して取付板５５の後面を接触させたとき、取付板５５に設けた被支持面５５ａが、支持部３５に設けた支持面３５ｂの上に載置されるようになっている。 As shown in FIGS. 10A and 10B, when the fixed end portion 54 is inserted into the insertion port 35a of the support portion 35 and the rear surface of the mounting plate 55 is brought into contact with the opening edge 35d of the insertion port 35a, the mounting is completed. The supported surface 55a provided on the plate 55 is mounted on the support surface 35b provided on the support portion 35.
　支持面３５ｂの上に被支持面５５ａが載置された状態にあっては、支持部３５の挿入口３５ａと、固定端部５４の導入口５４ａと、が実質的に同軸となる。このとき、支持面３５ｂに沿って被支持面５５ａを摺動させることで、取付板５５を水平方向に位置調整することが可能となる。 In the state where the supported surface 55a is placed on the support surface 35b, the insertion port 35a of the support portion 35 and the introduction port 54a of the fixed end 54 are substantially coaxial. At this time, by sliding the supported surface 55a along the support surface 35b, the position of the mounting plate 55 can be adjusted in the horizontal direction.
　また、支持面３５ｂの上に被支持面５５ａを載置すると、支持部３５に対する取付板５５の下降が規制されると同時に、支持部３５に対する取付板５５の捩れが規制される。支持面３５ｂの上に被支持面５５ａを載置することで、上下方向および捩れ方向における取付板５５の位置調整が完了するようになっている。この場合、上下方向および捩れ方向におけるミスアライメントは、被支持面５５ａおよび支持面３５ｂの製造公差に起因して生じることになる。 When the supported surface 55a is placed on the support surface 35b, the lowering of the mounting plate 55 with respect to the support portion 35 is restricted, and at the same time, the twist of the mounting plate 55 with respect to the support portion 35 is restricted. By mounting the supported surface 55a on the support surface 35b, the position adjustment of the mounting plate 55 in the up-down direction and the torsional direction is completed. In this case, misalignment in the up-down direction and the torsional direction occurs due to manufacturing tolerances of the supported surface 55a and the support surface 35b.
　また、複数の挿通孔５５ｂは、取付板５５の周方向に沿って配置されており、それぞれ、取付板５５を側板３３に固定するためのピン６０が挿し通されるように構成されている。 The plurality of insertion holes 55b are arranged along the circumferential direction of the mounting plate 55, and each is configured so that a pin 60 for fixing the mounting plate 55 to the side plate 33 is inserted therethrough.
　具体的に、複数の挿通孔５５ｂは、支持面３５ｂの上に被支持面５５ａが載置された状態にあっては、図１０Ａに示すように、支持部３５に設けた各挿通孔３５ｃに対して重なるように配置されている。そうして重なった挿通孔３５ｃ，５５ｂは互いに連通することになるから、そこにピン６０を挿し通すことで、支持部３５に対して取付板５５を固定することが可能となる。 Specifically, in the state where the supported surface 55a is placed on the support surface 35b, the plurality of insertion holes 55b are formed in the respective insertion holes 35c provided in the support portion 35 as shown in FIG. 10A. They are arranged so as to overlap with each other. Since the insertion holes 35c and 55b thus overlapped communicate with each other, the insertion plate 55 can be fixed to the support portion 35 by inserting the pin 60 therethrough.
　このように、本実施形態に係る取付板５５は、側板３３の支持部３５に設けた支持面３５ｂの上に被支持面５５ａが載置された状態で固定されるように構成されている。 As described above, the mounting plate 55 according to the present embodiment is configured to be fixed in a state where the supported surface 55a is placed on the support surface 35b provided on the support portion 35 of the side plate 33.
　また、取付板５５に設けた挿通孔５５ｂは、被支持面５５ａが延びる方向（所定方向としての水平方向）に沿って延びる長円状に形成されている。よって、取付板５５を水平方向に位置調整したとしても、支持部３５に設けた挿通孔３５ｃと、取付板５５に設けた挿通孔５５ｂとの連通を保つことができる。 The insertion hole 55b provided in the mounting plate 55 is formed in an oval shape extending along the direction in which the supported surface 55a extends (horizontal direction as a predetermined direction). Therefore, even if the position of the mounting plate 55 is adjusted in the horizontal direction, the communication between the insertion hole 35c provided in the support part 35 and the insertion hole 55b provided in the mounting plate 55 can be maintained.
　－固定端部よりも下流側の部位－
　図１１は、ロアレバー５３の構成を例示する図である。また図１２は、ロアレバー５３とアッパーレバー５２との連結部を例示する図である。 -Site downstream of the fixed end-
FIG. 11 is a diagram illustrating a configuration of the lower lever 53. FIG. 12 is a diagram exemplifying a connecting portion between the lower lever 53 and the upper lever 52.
　図１１に示すように、ロアレバー５３は、２本の管路部５３ａを板部５３ｂによって接続して成る。２本の管路部５３ａは、それぞれ、固定端部５４の導入口５４ａに連通している。図１２に示すように、各管路部５３ａの下流端部５３ｄは、上方からボルトを挿入するべく、平坦な上面５３ｆを上方に向け、かつ面取りが施された下面５３ｅを下方に向けた姿勢とされる。また、ロアレバー５３の上下を見誤らないように、板部５３ｂの上面には刻印５３ｃが施されている。 よ う As shown in FIG. 11, the lower lever 53 is formed by connecting two pipe portions 53a by a plate portion 53b. Each of the two pipe sections 53a communicates with an inlet 54a of the fixed end 54. As shown in FIG. 12, the downstream end 53d of each conduit 53a has a flat upper surface 53f facing upward and a chamfered lower surface 53e facing downward in order to insert a bolt from above. It is said. Also, an engraved mark 53c is provided on the upper surface of the plate portion 53b so that the upper and lower portions of the lower lever 53 are not mistaken.
　なお、各管路部５３ａの下流端部５３ｄは、アッパーレバー５２の上流端部に開口した油路に連通している。詳細は省略するが、アッパーレバー５２は、ロアレバー５３と同様に、２本の管路部を板部によって接続して成る。アッパーレバー５２の下流端部は、自由端部５１に設けた油路に連通している。この油路は、クロスヘッド４０の中に開口しており、クロスヘッド４０へと潤滑油を吐出することができる。 The downstream end 53d of each pipe 53a communicates with an oil passage opened at the upstream end of the upper lever 52. Although details are omitted, the upper lever 52 is formed by connecting two pipe sections by a plate portion, similarly to the lower lever 53. The downstream end of the upper lever 52 communicates with an oil passage provided at the free end 51. This oil passage is opened in the crosshead 40 so that the lubricating oil can be discharged to the crosshead 40.
　（５）ニーレバーの位置調整について
　ところで、図３に示すようなニーレバー５０の場合、そのミスアライメントに起因して、動作時にコジレが生じたり、アッパーレバー５２とロアレバー５３との連結部をはじめとする可動部にて隙間が生じたりする可能性がある。このことは、潤滑油の漏出を招くため望ましくない。 (5) Knee lever position adjustment By the way, in the case of the knee lever 50 as shown in FIG. 3, due to its misalignment, dents may occur during operation, and a connection portion between the upper lever 52 and the lower lever 53 may be included. There is a possibility that a gap may occur in the movable part. This is undesirable because it causes leakage of the lubricating oil.
　ミスアライメントを抑制するためには、架構１２に対し、取付板５５を可能な限り精密に位置決めする必要がある。こうした事情から、取付板５５は、架構１２に対して上下方向、水平方向および捩れ方向のそれぞれについて精密に位置決めされなければならないが、このことは、架構１２内外での工数がかさむため不都合である。 抑制 す る In order to suppress misalignment, it is necessary to position the mounting plate 55 with respect to the frame 12 as precisely as possible. Under these circumstances, the mounting plate 55 must be precisely positioned with respect to the frame 12 in each of the vertical direction, the horizontal direction, and the torsion direction. .
　対して、図１０Ａ及び図１０Ｂに示すように、取付板５５には被支持面５５ａが設けられているとともに、架構１２の支持部３５には支持面３５ｂが設けられている。そして、この支持部３５に取付板５５を位置決めする工程は、被支持面５５ａを支持面３５ｂ上に載置した状態で行うことができる。 On the other hand, as shown in FIGS. 10A and 10B, the mounting plate 55 is provided with a supported surface 55a, and the supporting portion 35 of the frame 12 is provided with a supporting surface 35b. The step of positioning the mounting plate 55 on the support portion 35 can be performed with the supported surface 55a placed on the support surface 35b.
　特に、図１０Ａ及び図１０Ｂに示すように、被支持面５５ａおよび支持面３５ｂを水平方向に延びる加工面とした場合、支持面３５ｂの上に被支持面５５ａを載置すると、取付板５５は、少なくとも上下方向および捩れ方向については位置決めされることになる。そうして載置された状態のまま、取付板５５を水平方向に位置調整するだけで、取付板５５の位置決めを完了することができる。 In particular, as shown in FIGS. 10A and 10B, when the supported surface 55a and the support surface 35b are processing surfaces extending in the horizontal direction, when the supported surface 55a is placed on the support surface 35b, the mounting plate 55 , At least in the vertical and torsional directions. The positioning of the mounting plate 55 can be completed only by adjusting the position of the mounting plate 55 in the horizontal direction while the device is placed on the mounting plate 55.
　この場合、例えば捩れ方向の精度については、被支持面５５ａおよび支持面３５ｂの機械加工の公差によって規定することができる。このように、位置決め精度の善し悪しを作業者に委ねることなく、機械加工の公差によって規定することが可能となる。 In this case, for example, the accuracy in the torsional direction can be defined by the tolerance of the machining of the supported surface 55a and the support surface 35b. In this way, it is possible to define the positioning accuracy by the machining tolerance without leaving the quality of the positioning accuracy to the operator.
　また、図９Ｂに示すように、取付板５５側の挿通孔５５ｂが、水平方向に延びる長円状に形成されているため、支持部３５と取付板５５にピン６０を挿し通したまま、取付板５５を水平方向に位置調整することが可能となる。これにより、ニーレバー５０の位置決めが容易になる。 Further, as shown in FIG. 9B, since the insertion hole 55b on the mounting plate 55 side is formed in an oval shape extending in the horizontal direction, the mounting is performed while the pin 60 is inserted through the support portion 35 and the mounting plate 55. The position of the plate 55 can be adjusted in the horizontal direction. Thereby, the positioning of the knee lever 50 becomes easy.
　また、図３及び図１０Ｂに示すように、固定端部５４は、架構１２の内側から取り付けられたのではなく、架構１２の外方から挿入されるようになっている。よって、挿入口３５ａの内周面によって、固定端部５４を下方から支持することができる。 固定 Further, as shown in FIGS. 3 and 10B, the fixed end portion 54 is not attached from the inside of the frame 12, but is inserted from the outside of the frame 12. Therefore, the fixed end 54 can be supported from below by the inner peripheral surface of the insertion port 35a.
　《他の実施形態》
　前記実施形態では、被支持面５５ａおよび支持面３５ｂは、水平方向に沿って延びるように構成されていたが、この構成には限定されない。例えば、水平方向に対して傾斜させた方向に被支持面５５ａと支持面３５ｂとを延ばしてもよい。いずれの方向に延ばした場合であっても、その方向に沿って取付板５５を位置調整するだけで、取付板５５の位置決めを完了することが可能となる。 << Other embodiments >>
In the above-described embodiment, the supported surface 55a and the support surface 35b are configured to extend along the horizontal direction, but are not limited to this configuration. For example, the supported surface 55a and the support surface 35b may extend in a direction inclined with respect to the horizontal direction. Regardless of the direction of extension, the positioning of the mounting plate 55 can be completed only by adjusting the position of the mounting plate 55 along that direction.
　また前記実施形態では、取付板５５に設けられる挿通孔５５ｂが長円状に構成されていたが、この構成には限定されない。例えば、支持部３５に設けられる挿通孔３５ｃを長円状に構成してもよい。 Also, in the above-described embodiment, the insertion hole 55b provided in the attachment plate 55 is formed in an elliptical shape, but is not limited to this configuration. For example, the insertion hole 35c provided in the support portion 35 may be formed in an oval shape.
１　　　エンジン（内燃機関、クロスヘッド式内燃機関）
１２　　架構（ケーシング）
２１　　ピストン棒
２５　　連接棒
３５　　支持部
３５ａ　挿入口
３５ｂ　支持面
３５ｃ　挿通孔
３６　　受入部
４０　　クロスヘッド
５０　　ニーレバー（可動式給油管）
５１　　自由端部
５２　　アッパーレバー（第１レバー）
５３　　ロアレバー（第２レバー）
５４　　固定端部
５４ａ　導入口
５５　　取付板
５５ａ　被支持面
５５ｂ　挿通孔
６０　　ピン 1 engine (internal combustion engine, crosshead type internal combustion engine)
12 Frame (casing)
21 Piston rod 25 Connecting rod 35 Supporting part 35a Insertion port 35b Supporting surface 35c Inserting hole 36 Receiving part 40 Crosshead 50 Knee lever (movable oil supply pipe)
51 Free end 52 Upper lever (first lever)
53 Lower lever (second lever)
54 fixed end 54a inlet 55 mounting plate 55a supported surface 55b insertion hole 60 pin

Claims (7)

  1. 　内燃機関のケーシングと、ピストン棒および連接棒を連結するクロスヘッドと、の間に接続され、前記クロスヘッドの往復動を許容するように動作するとともに、該クロスヘッドに潤滑油を供給するように構成された可動式給油管であって、
    　前記クロスヘッドに接続される自由端部と、
    　前記自由端部の反対側に設けられ、前記ケーシングに接続される固定端部と、
    　前記固定端部に開口した導入口と、
    　前記導入口の周縁に設けられ、前記ケーシングに固定される取付板と、を備え、
    　前記取付板には、下方に面する被支持面が設けられ、
    　前記取付板は、前記ケーシングに設けた支持面の上に前記被支持面が載置された状態で固定されるように構成されている
    ことを特徴とする可動式給油管。     It is connected between a casing of the internal combustion engine and a crosshead connecting the piston rod and the connecting rod, operates to allow the crosshead to reciprocate, and supplies lubricating oil to the crosshead. A movable oil supply pipe configured,
    A free end connected to the crosshead;
    A fixed end provided opposite the free end and connected to the casing;
    An inlet opening to the fixed end,
    A mounting plate provided on a peripheral edge of the introduction port and fixed to the casing,
    The mounting plate is provided with a supported surface facing downward,
    A movable oil supply pipe, wherein the mounting plate is configured to be fixed with the supported surface placed on a support surface provided on the casing.
  2. 　請求項１に記載された可動式給油管において、
    　前記被支持面および前記支持面は、双方とも所定方向に沿って延び、
    　前記取付板および前記ケーシングには、該ケーシングに前記取付板を固定するためのピンが挿し通される挿通孔が設けられ、
    　前記挿通孔のうち、前記取付板または前記ケーシングに設けた一方は、前記所定方向に沿って延びる長円状に形成されている
    ことを特徴とする可動式給油管。     The movable oil supply pipe according to claim 1,
    Both the supported surface and the support surface extend along a predetermined direction,
    The mounting plate and the casing are provided with an insertion hole through which a pin for fixing the mounting plate to the casing is inserted.
    A movable oil supply pipe, wherein one of the insertion holes provided in the mounting plate or the casing is formed in an oval shape extending along the predetermined direction.
  3. 　請求項１または２に記載された可動式給油管において、
    　前記被支持面および前記支持面は、双方とも水平方向に沿って延びる
    ことを特徴とする可動式給油管。     The movable oil supply pipe according to claim 1 or 2,
    The movable oil supply pipe, wherein both the supported surface and the support surface extend along a horizontal direction.
  4. 　請求項１から３のいずれか１項に記載された可動式給油管において、
    　前記ケーシングには、該ケーシングの外部から内部へ向かって前記固定端部が挿入される挿入口が設けられ、
    　前記支持面は、前記挿入口の周縁かつ下方に設けられている
    ことを特徴とする可動式給油管。     The movable oil supply pipe according to any one of claims 1 to 3,
    The casing is provided with an insertion port into which the fixed end is inserted from outside to inside of the casing,
    The movable oil supply pipe, wherein the support surface is provided at a periphery and below the insertion opening.
  5. 　請求項１から４のいずれか１項に記載された可動式給油管において、
    　前記自由端部に連なる第１レバーと、
    　前記第１レバーと連結され、かつ前記固定端部に連なる第２レバーと、を備え、
    　前記ケーシングには、前記クロスヘッドの往復動に連動する前記第１レバーおよび前記第２レバーを受け入れるように外方へ膨出させた受入部が設けられている
    ことを特徴とする可動式給油管。     The movable oil supply pipe according to any one of claims 1 to 4,
    A first lever connected to the free end;
    A second lever connected to the first lever and connected to the fixed end,
    A movable oil supply pipe, wherein the casing is provided with a receiving portion bulging outward to receive the first lever and the second lever interlocked with the reciprocating movement of the crosshead. .
  6. 　請求項１から５のいずれか１項に記載された可動式給油管において、
    　前記取付板は、前記導入口を取り囲む円板状のフランジとして形成され、
    　前記被支持面は、前記円板の側面のうち、下側の側面を切り欠いて成る
    ことを特徴とする可動式給油管。     The movable oil supply pipe according to any one of claims 1 to 5,
    The mounting plate is formed as a disk-shaped flange surrounding the introduction port,
    The movable lubrication pipe, wherein the supported surface is formed by cutting out a lower side surface of the side surface of the disk.
  7. 　請求項１から６のいずれか１項に記載された可動式給油管を備える
    ことを特徴とするクロスヘッド式内燃機関。     A crosshead type internal combustion engine comprising the movable oil supply pipe according to any one of claims 1 to 6.
PCT/JP2019/032655 2018-10-01 2019-08-21 Mobile-type oil supply pipe and crosshead-type internal combustion engine WO2020071000A1 (en)

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CN201980064784.5A CN112789394B (en) 2018-10-01 2019-08-21 Movable fuel supply pipe and crosshead internal combustion engine
KR1020217011702A KR102544855B1 (en) 2018-10-01 2019-08-21 Movable Oil Pipe and Crosshead Internal Combustion Engine

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JP2018-186835 2018-10-01
JP2018186835A JP7083299B2 (en) 2018-10-01 2018-10-01 Movable refueling pipe and crosshead internal combustion engine

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WO2020071000A1 true WO2020071000A1 (en) 2020-04-09

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JPH01313609A (en) * 1988-04-27 1989-12-19 Gebr Sulzer Ag Lubrication system for crosshead bearing of two-cycle internal combustion piston engine
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CH632805A5 (en) * 1978-04-27 1982-10-29 Sulzer Ag Lubricant ducting system in a crosshead pin
DK0903473T3 (en) * 1997-09-22 2004-03-29 Waertsilae Nsd Schweiz Ag Diesel engine and method for operating one
CN101285517A (en) * 2008-05-20 2008-10-15 江苏大学 Crankshaft link rod motion device
US9377706B2 (en) 2013-10-22 2016-06-28 Xerox Corporation Sustainable toner and optimized process
JP5926353B2 (en) 2014-10-28 2016-05-25 エムエーエヌ・ディーゼル・アンド・ターボ・フィリアル・アフ・エムエーエヌ・ディーゼル・アンド・ターボ・エスイー・ティスクランド Crosshead bearing for large two-cycle diesel engines
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JPS50128027A (en) * 1974-03-21 1975-10-08
JPS6298749U (en) * 1985-12-12 1987-06-23
JPH01313609A (en) * 1988-04-27 1989-12-19 Gebr Sulzer Ag Lubrication system for crosshead bearing of two-cycle internal combustion piston engine
JP2013253600A (en) * 2012-06-05 2013-12-19 Waertsilae Schweiz Ag Lubricant collecting device

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KR20210062056A (en) 2021-05-28
CN112789394A (en) 2021-05-11
KR102544855B1 (en) 2023-06-16
JP2020056350A (en) 2020-04-09
CN112789394B (en) 2023-01-06

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