CN102168593B - Crankshaft lubrication structure for general engine - Google Patents
Crankshaft lubrication structure for general engine Download PDFInfo
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- CN102168593B CN102168593B CN201110115376A CN201110115376A CN102168593B CN 102168593 B CN102168593 B CN 102168593B CN 201110115376 A CN201110115376 A CN 201110115376A CN 201110115376 A CN201110115376 A CN 201110115376A CN 102168593 B CN102168593 B CN 102168593B
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- upper box
- oil
- resuscitation apparatus
- spindle hole
- hole
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- Lubrication Of Internal Combustion Engines (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention relates to a crankshaft lubrication structure for a general engine, which relates to the field of the lubrication structure for lubricating a crankshaft in a box body on the engine. The crankshaft lubrication structure is characterized in that: the lubrication structure which consists of a respirator inlet (20) of a respirator (40), a primary sedimentation oil pool (25), an oil return oblique hole (26), a spindle oil seal small cavity (39), a spindle oil return groove (28) of an upper box body, and a crankcase (34) and is used for lubricating the crankshaft (4) in a spindle hole (27) of the upper box body is arranged in the upper box body (2), and the oil return oblique hole (26) is connected between the primary sedimentation oil pool (25) and the spindle oil seal small cavity (39); and the spindle oil seal small cavity (39) is enclosed by an oil seal (3), the crankshaft (4) and the spindle hole (27) of the upper box body. The crankshaft lubrication structure for the general engine can be used for lubricating the crankshaft in the spindle hole of the upper box body, and has the advantages of simple structure and good lubrication effect.
Description
Technical field
general purpose engine of the present invention relates to the structure that motor upper box inside crankshaft is lubricated with the crankshaft lubrication structure, belongs to general purpose engine with crankshaft lubrication structure field.
Background technique
general purpose engine in the past are installed in the upper and lower casing spindle hole through upper bearing and lower bearing with bent axle; Bent axle is done rolling friction through bearing in upper and lower casing, if this type general purpose engine only is used for special purposes such as beating the grass of family garden lawn, for using in the gap; And do not need oversize total working life; Because of bent axle has obtained oil lubricating in lower box, so, then can save the crankshaft bearing in upper and lower casing if can oil lubricating be provided in upper box to engine crankshaft; Make bent axle in the spindle hole of upper and lower casing, can carry out sliding friction, also can realize the normal operation of general purpose engine.
Summary of the invention
the purpose of this invention is to provide a kind of general purpose engine and use the crankshaft lubrication structure; Machine oil is back to crankcase through resuscitation apparatus suction port, primary settling oil sump, oil return inclined hole, the little cavity of main shaft oil sealing, upper box spindle hole oil-return groove, then can reach the purpose that provides machine oil to be lubricated to the bent axle that is installed in the upper box spindle hole.
a kind of general purpose engine is used the crankshaft lubrication structure, the lubricating structure that the bent axle in the upper box spindle hole that on the upper box of motor, has resuscitation apparatus suction port, primary settling oil sump, oil return inclined hole and the little cavity of main shaft oil sealing, upper box spindle hole oil-return groove, crankcase by resuscitation apparatus to constitute is lubricated; The oil return inclined hole is communicated with between the primary settling oil sump bottom surface and the little cavity of main shaft oil sealing of primary settling oil sump; The little cavity of main shaft oil sealing is to enclose the annular housing that structure forms by oil sealing, bent axle and upper box spindle hole; Upper box spindle hole oil-return groove is opened on upper box spindle hole circumference.
General purpose engine of the present invention is explained as follows with crankshaft lubrication structure Design principle:
are when the piston in the general purpose engine is up in cylinder body; Then in crankcase, form negative pressure; Oil gas valve actuating push rod passage in upper box under suction function in the crankcase enters in the cylinder head cavity; Oil gas enters into the primary settling oil sump through the resuscitation apparatus suction port again; Oil return inclined hole in the primary settling oil sump underrun upper box of the cold oil one route primary settling oil sump bottom in the primary settling oil sump enters into the little cavity of main shaft oil sealing, is lubricated being installed in the bent axle that rotates in the upper box spindle hole through upper box spindle hole oil-return groove, and is back in the crankcase; Resuscitation apparatus master sedimentation oil sump is gone into through the overflow of primary settling oil sump flow-off in another road of cold oil in the primary settling oil sump, and is back to crankcase by the resuscitation apparatus master spill port of resuscitation apparatus master sedimentation oil sump bottom.More than constitute the oil gas circulation that the oil gas in the crankcase constitutes through resuscitation apparatus in the general purpose engine upper box.
General purpose engine of the present invention is explained as follows with the housing structure at crankshaft lubrication structure place:
The lower box mould assembling junction plane of
lower box and the upper box mould assembling junction plane of upper box link into an integrated entity through casing mould assembling bolt; The piston that bent axle is installed through connecting rod is positioned at the cylinder body of upper box, and the crankshaft two end that is installed in upper box spindle hole and the lower box spindle hole is set with oil sealing.
are installed in the cylinder body through the valve that valve spring and valve collet are installed in the cylinder head cavity on the valve actuating push rod passage top of upper box, and spark plug also is installed on the cylinder body.
cylinder head cover and cylinder head cover sealing gasket are installed on the cylinder head through cylinder bolt.
have upper box spindle hole oil-return groove on the upper box spindle hole circumference of upper box; Upper box spindle hole next door at upper box is designed with resuscitation apparatus; The resuscitation apparatus suction port of the circle of resuscitation apparatus is positioned at valve block sealing surface center; There is pair resuscitation apparatus valve block to stop that the valve block of location stops boss in valve block sealing surface one side; Oil gas is introduced interface by the oil gas of resuscitation apparatus and is got into through the resuscitation apparatus suction port, and the residual gas in the oil gas is discharged by the outlet of resuscitation apparatus residual gas, on a circle resuscitation apparatus sealing surface of resuscitation apparatus, adds resuscitation apparatus sealing gasket and resuscitation apparatus cover plate; On resuscitation apparatus, have the resuscitation apparatus cover plate tapped hole is installed, so that on the resuscitation apparatus sealing surface, install resuscitation apparatus sealing gasket and resuscitation apparatus cover plate additional through screw.
have primary settling oil sump flow-off on primary settling oil sump top, and the cold oil that overflow goes out flows into resuscitation apparatus master sedimentation oil sump, and the resuscitation apparatus master spill port through resuscitation apparatus master sedimentation oil sump bottom is back in the crankcase again.
have the primary settling oil sump in elementary oil sump boss one side, and in the resuscitation apparatus sealing surface, enclosing structure has valve block sealing surface, resuscitation apparatus master sedimentation oil sump and primary settling oil sump.
The oil return inclined hole that
primary settling oil sump underrun in the bottom of the primary settling oil sump on the upper box is connected is connected with the little cavity of main shaft oil sealing, the upper box spindle hole oil-return groove on the upper box spindle hole; In crankcase, under the suction function, cold oil is flow in the crankcase.
Between bent axle, oil sealing and the upper box spindle hole in
upper box, formed the annular little cavity of main shaft oil sealing, oil-sealing sleeve is contained in crankshaft two end.
this general purpose engine is used the crankshaft lubrication structure, and advantage is simple in structure, has guaranteed through the condensation machine oil from resuscitation apparatus the bent axle in the upper box spindle hole to be lubricated, and high lubricating effect can be saved crankshaft bearing at crankshaft two end.
Description of drawings
Fig. 1: the general purpose engine that in the upper box of general purpose engine 2 and lower box 1, is constituted is with the cross-sectional schematic of the oil suction part-structure in the crankshaft lubrication structure.
Fig. 2: the cross-sectional schematic that in the upper box of general purpose engine 2 and lower box 1, is constituted to the lubricated backflow part-structure of bent axle 4.
Fig. 3: the local schematic top plan view of the upper box 2 of general purpose engine.
Fig. 4: be Fig. 3 midship section A-A cross-sectional schematic.
Fig. 5: be Fig. 3 midship section B-B cross-sectional schematic.
Fig. 6: be Fig. 3 midship section C-C cross-sectional schematic.
Embodiment
are referring to each accompanying drawing; A kind of general purpose engine is used the crankshaft lubrication structure, the lubricating structure that the bent axle in the upper box spindle hole 27 4 is lubricated that has in the upper box 2 of motor that resuscitation apparatus suction port 20, primary settling oil sump 25, oil return inclined hole 26 and main shaft oil sealing loculus body 39, upper box spindle hole oil-return groove 28, crankcase 34 by resuscitation apparatus 40 constitute; Oil return inclined hole 26 is communicated with between the primary settling oil sump bottom surface 33 and main shaft oil sealing loculus body 39 of primary settling oil sump 25; Main shaft oil sealing loculus body 39 is to enclose the annular housing that structure forms by oil sealing 3, bent axle 4 and upper box spindle hole 27; Upper box spindle hole oil-return groove 28 is opened on upper box spindle hole 27 circumference.
Referring to Fig. 1 and Fig. 2, the lower box mould assembling junction plane 37 of lower box 1 links into an integrated entity through casing mould assembling bolt 8 with the upper box mould assembling junction plane 36 of upper box 2
; The piston 12 that bent axle 4 is installed through connecting rod 11 is positioned at the cylinder body of upper box 2, is installed on upper box spindle hole 27 and is respectively installed with oil sealing 3 with interior bent axle 4 two ends of lower box spindle hole.
are installed in the cylinder body through the valve 17 that valve spring 14 and valve collet 15 are installed in the cylinder head cavity 38 on valve actuating push rod passage 35 tops of upper box 2, and spark plug 3 is installed on cylinder body.
cylinder head cover 9 is installed on the cylinder head through cylinder bolt 16 with cylinder head cover sealing gasket 10.
have upper box spindle hole oil-return groove 28 on upper box spindle hole 27 circumference of upper box 2, be designed with resuscitation apparatus 40 on upper box spindle hole 27 next doors of upper box 2.
are referring to Fig. 4; The resuscitation apparatus suction port 20 of resuscitation apparatus 40 is positioned at valve block sealing surface 19 centers of ring; There is valve block to stop boss 18 in valve block sealing surface 19 1 sides; On a circle resuscitation apparatus sealing surface 23 of resuscitation apparatus 40, be added with resuscitation apparatus sealing gasket and resuscitation apparatus cover plate, on resuscitation apparatus 40, have the resuscitation apparatus cover plate tapped hole 29 is installed; Oil gas is introduced interface 31 by the oil gas of resuscitation apparatus 40 and is got into through resuscitation apparatus suction port 20, and the residual gas in the oil gas is discharged by resuscitation apparatus residual gas outlet 32.
are referring to Fig. 3, Fig. 5 and Fig. 6; On primary settling oil sump 25 tops primary settling oil sump flow-off 24 is arranged; The cold oil that overflows flows into resuscitation apparatus master sedimentation oil sump 21, and the resuscitation apparatus master spill port 22 through resuscitation apparatus master sedimentation oil sump 21 bottoms is back in the crankcase 34 again.
primary settling oil sump 25 is in elementary oil sump boss 30 1 sides, and in the resuscitation apparatus sealing surface 23 of resuscitation apparatus 40, enclosing structure has valve block sealing surface 19, resuscitation apparatus master sedimentation oil sump 21 and primary settling oil sump 25.
are like Fig. 1 and shown in Figure 6; Be connected with main shaft oil sealing loculus body 39, upper box spindle hole oil-return groove 28 on the upper box spindle hole 27 through the oil return inclined hole 26 that is connected in the primary settling oil sump bottom surface 33 of primary settling oil sump 25 bottoms on the upper box 2, the cold oil behind the crankshaft lubrication is injected in the crankcase 34.
are as shown in Figure 2, between bent axle 4, oil sealing 3 and the upper box spindle hole 27 of upper box 2, formed annular main shaft oil sealing loculus body 39, and oil sealing 3 is sleeved on bent axle 4 two ends.
Claims (4)
1. a general purpose engine is used the crankshaft lubrication structure, the lubricating structure that the bent axle (4) in the upper box spindle hole (27) that it is characterized in that having on the upper box (2) at motor resuscitation apparatus suction port (20), primary settling oil sump (25), oil return inclined hole (26) and the little cavity of main shaft oil sealing (39), upper box spindle hole oil-return groove (28), crankcase (34) by resuscitation apparatus (40) to constitute is lubricated; Oil return inclined hole (26) is communicated with between the primary settling oil sump bottom surface (33) and the little cavity of main shaft oil sealing (39) of primary settling oil sump (25); The little cavity of main shaft oil sealing (39) is to enclose the annular housing that structure forms by oil sealing (3), bent axle (4) and upper box spindle hole (27); Upper box spindle hole oil-return groove (28) is opened on upper box spindle hole (27) circumference.
2. a kind of general purpose engine according to claim 1 is used the crankshaft lubrication structure, it is characterized in that bent axle (4) two ends that are installed in upper box spindle hole (27) and the lower box spindle hole are respectively installed with oil sealing (3).
3. a kind of general purpose engine according to claim 1 is used the crankshaft lubrication structure; It is characterized in that being designed with resuscitation apparatus (40) on upper box spindle hole (27) next door of upper box (2); The resuscitation apparatus suction port (20) of resuscitation apparatus (40) is positioned at valve block sealing surface (19) center of ring; There is valve block to stop boss (18) in valve block sealing surface (19) one sides, and on resuscitation apparatus (40), has resuscitation apparatus cover plate installation tapped hole (29).
4. a kind of general purpose engine according to claim 1 is used the crankshaft lubrication structure, it is characterized in that primary settling oil sump (25) is in elementary oil sump boss (30) one sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110115376A CN102168593B (en) | 2011-05-05 | 2011-05-05 | Crankshaft lubrication structure for general engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110115376A CN102168593B (en) | 2011-05-05 | 2011-05-05 | Crankshaft lubrication structure for general engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102168593A CN102168593A (en) | 2011-08-31 |
| CN102168593B true CN102168593B (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110115376A Active CN102168593B (en) | 2011-05-05 | 2011-05-05 | Crankshaft lubrication structure for general engine |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295402A (en) * | 2014-07-20 | 2015-01-21 | 中国北方发动机研究所(天津) | Crankshaft oil seal oil return structure suitable for internal combustion engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6915770B2 (en) * | 2003-10-27 | 2005-07-12 | Chi-Fang Lu | Lubricating oil supplying structure of an engine |
| CN2835581Y (en) * | 2005-11-11 | 2006-11-08 | 昆明云内动力股份有限公司 | Oil-gas separated engine crankshaft case |
| US20100307448A1 (en) * | 2007-06-08 | 2010-12-09 | Husqvarna Ab | Lubrication system for a four-stroke engine |
| CN202055886U (en) * | 2011-05-05 | 2011-11-30 | 江苏林海动力机械集团公司 | Crankshaft lubricating structure for general engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07107363B2 (en) * | 1990-08-02 | 1995-11-15 | 本田技研工業株式会社 | Lubricator for 2-cycle engine |
| JP2010285884A (en) * | 2009-06-09 | 2010-12-24 | Fuji Heavy Ind Ltd | Lubricating device for engine |
-
2011
- 2011-05-05 CN CN201110115376A patent/CN102168593B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6915770B2 (en) * | 2003-10-27 | 2005-07-12 | Chi-Fang Lu | Lubricating oil supplying structure of an engine |
| CN2835581Y (en) * | 2005-11-11 | 2006-11-08 | 昆明云内动力股份有限公司 | Oil-gas separated engine crankshaft case |
| US20100307448A1 (en) * | 2007-06-08 | 2010-12-09 | Husqvarna Ab | Lubrication system for a four-stroke engine |
| CN202055886U (en) * | 2011-05-05 | 2011-11-30 | 江苏林海动力机械集团公司 | Crankshaft lubricating structure for general engine |
Non-Patent Citations (2)
| Title |
|---|
| JP平4-91312A 1992.03.24 |
| JP特开2010-285884A 2010.12.24 |
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| CN102168593A (en) | 2011-08-31 |
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Owner name: JIANGSU FUMA HIGH NEW POWER MACHINERY CO., LTD. Effective date: 20141201 |
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Free format text: CORRECT: ADDRESS; FROM: 225300 TAIZHOU, JIANGSU PROVINCE TO: 225320 TAIZHOU, JIANGSU PROVINCE |
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Effective date of registration: 20141201 Address after: 225320 No. 199 West Spring Road, Jiangsu, Taizhou Patentee after: Linhai Power Machinery Group Corp., Jiangsu Patentee after: JIANGSU FOMA HIGH-TECH POWER MACHINERY CO., LTD. Address before: 225300, No. 14, Tai nine road, Hailing District, Jiangsu, Taizhou Patentee before: Linhai Power Machinery Group Corp., Jiangsu |
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Owner name: JIANGSU FUMA HIGH NEW POWER MACHINERY CO., LTD. Free format text: FORMER NAME: LINHAI POWER MACHINERY GROUP CORP., JIANGSU |
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| CP03 | Change of name, title or address |
Address after: 225320, 309, Zhenxing Road, Gaogang hi tech Industrial Park, Jiangsu, Taizhou Patentee after: JIANGSU FOMA HIGH-TECH POWER MACHINERY CO., LTD. Patentee after: Linhai Power Machinery Group Corp., Jiangsu Address before: 225320 No. 199 West Spring Road, Jiangsu, Taizhou Patentee before: Linhai Power Machinery Group Corp., Jiangsu Patentee before: JIANGSU FOMA HIGH-TECH POWER MACHINERY CO., LTD. |