CN105697185A - Crankshaft box - Google Patents

Crankshaft box Download PDF

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Publication number
CN105697185A
CN105697185A CN201610059203.7A CN201610059203A CN105697185A CN 105697185 A CN105697185 A CN 105697185A CN 201610059203 A CN201610059203 A CN 201610059203A CN 105697185 A CN105697185 A CN 105697185A
Authority
CN
China
Prior art keywords
lubricating oil
crankcase
duct
hole
push rod
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN201610059203.7A
Other languages
Chinese (zh)
Other versions
CN105697185B (en
Inventor
鲁卡
刘兵
何飞
冯朋博
龚兴明
杨松
谢育明
成勇
张正华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Loncin Motor Co Ltd
Loncin General Dynamics Co Ltd
Original Assignee
Loncin General Dynamics Co Ltd
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Filing date
Publication date
Application filed by Loncin General Dynamics Co Ltd filed Critical Loncin General Dynamics Co Ltd
Priority to CN201610059203.7A priority Critical patent/CN105697185B/en
Publication of CN105697185A publication Critical patent/CN105697185A/en
Application granted granted Critical
Publication of CN105697185B publication Critical patent/CN105697185B/en
Active legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • 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
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/06—Dip or splash lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The invention discloses a crankshaft box. The crankshaft box is provided with a lubricating oil splashing hole channel which enables the crankshaft box and a rocker arm installation space of an engine air cylinder assembly to communicate. According to the crankshaft box, splashing lubricating oil in the crankshaft box enters the rocker arm installation space through the lubricating oil splashing hole channel, a rocker arm, an air valve and other cylinder head moving parts can be fully lubricated and cooled, the circulation route of the lubricating oil is not changed, and rapid abrasion to the rocker arm and the air valve and carbon deposition caused by high temperature are avoided, so that the service life of a rocker arm assembly is prolonged.

Description

Crankcase
Technical field
The present invention relates to a kind of engine components, particularly to a kind of crankcase。
Background technology
The air inlet system and exhaust system of electromotor are the necessary parts of electromotor, realize charge combustion by the keying of bent axle power drive inlet valve and exhaust valve and waste gas is discharged；Inlet valve and the commonly used rocking arm of exhaust valve drive, and rocker arm assembly is positioned at the position that cylinder is nearer, and operating temperature is higher；And in order to prevent the rocking arm of altofrequency action and valve Fast Wearing and reduce ratio temperature, then require over lubricating oil to its cooling and lubrication；In prior art, being provided with special oil leab on cylinder head, the lubricating oil in this oil leab forms circulation at cylinder head place, but fully to rocking arm and valve sufficient lubrication, rocking arm and working temperature of valve cannot be caused higher, it is easy to form carbon distribution, and it is very fast to wear and tear, and reduces service life。
Therefore, need the lubrication system of existing electromotor is improved, can be formed and the cylinder head movement parts such as rocking arm, valve is carried out sufficient lubrication and cooling, do not change the circulation route of lubricating oil, the Fast Wearing avoiding rocking arm and valve and the carbon distribution caused due to high temperature, extend the service life of rocker arm assembly。
Summary of the invention
In view of this, it is an object of the invention to provide a kind of crankcase, can be formed and the cylinder head movement parts such as rocking arm, valve is carried out sufficient lubrication and cooling, do not change the circulation route of lubricating oil, the Fast Wearing avoiding rocking arm and valve and the carbon distribution caused due to high temperature, extend the service life of rocker arm assembly。
The crankcase of the present invention, described crankcase is communicated with the lubricating oil splash duct between the rocking arm installing space of crankcase and cylinder assemblies；During use, crankcase inside crankshaft link assembly operationally can make lubricating oil form splashing, the lubricating oil splashed enters the rocking arm installing space (being positioned on cylinder head) of cylinder assembly by lubricating oil splash channel section, rocking arm and valve etc. are formed lubrication and cooling, owing to being splash lubrication, a small amount of lubricating oil can play good effect。
Further, described lubricating oil splash duct be positioned at engine connecting rod big end arrange get rid of oil skip get rid of oil splashing scope；Get rid of oil skip (oil-throwing rod) and belong to the common components of put-put, belong to prior art, do not repeat them here；Lubricating oil splash duct be positioned at get rid of oil skip get rid of oil scope (such as getting rid of the motion tangent line of oil skip), be beneficial to and make more lubricating oil enter rocking arm installing space, form lubrication and cool down。
Further, described lubricating oil splash duct is directly through to rocking arm installing space；Directly run through and namely form straight hole, be more conducive to lubricating oil and directly splash to required lubricant housings, simple in construction, lubrication and good cooling results。
Further, described lubricating oil splash duct is passed through between hole by hole and exhaust valve push rod at inlet valve push rod；Owing to the installation of rocking arm is corresponding with the position of inlet valve push rod and exhaust valve push rod, the lubricating oil splashed by lubricating oil splash duct is more conducive to act on rocking arm, forms efficient lubrication；Inlet valve push rod is existing structure by hole and exhaust valve push rod by hole, does not repeat them here。
Further, header structure sized by the cross section in described lubricating oil splash duct, the major part of described concentric reducer structure is avoided inlet valve push rod and is formed by extending to both sides behind hole by hole and exhaust valve push rod；Concentric reducer structure includes T-shaped structure, trapezium structure, triangular structure or by the one large one small structure of smooth curved transition；The microcephaly of this concentric reducer structure passes through, between hole, to avoid backward both sides and expand gradually by hole and exhaust valve push rod at inlet valve push rod, and both sides refer to passes through hole and the orientation by hole of the exhaust valve push rod to inlet valve push rod respectively, does not repeat them here。
Further, the major part of described concentric reducer structure corresponds to cylinder body side, and this structure can strengthen the lubricating oil splash amount that rocking arm is overall further, and meanwhile, this major part also corresponds to inlet and exhaust valve splash lubrication oil, and cooling and lubricant effect are better。
Further, described crankcase is the crankcase of vertical type general-purpose petrol engine。
Further, described lubricating oil splash duct is upper and lower straight hole, is more conducive to passing through of lubricating oil, and ensures backflow。
Further, described concentric reducer structure is be made up of structure ascending gradually smoothed curve, it is to avoid stress is concentrated, and can make full use of inlet valve push rod by hole and exhaust valve push rod by the space between hole, increases lubricating oil splash amount。
Beneficial effects of the present invention: the crankcase of the present invention, adopt the structure in the lubricating oil splash duct being communicated with between the rocking arm installing space of crankcase and cylinder assembly on crankcase, the lubricating oil splashed in crankcase enters rocking arm installing space by this duct, can be formed and the cylinder head movement parts such as rocking arm, valve is carried out sufficient lubrication and cooling, do not change the circulation route of lubricating oil, the Fast Wearing avoiding rocking arm and valve and the carbon distribution caused due to high temperature, extend the service life of rocker arm assembly。
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described。
Fig. 1 is the structural representation that the present invention installs and uses；
Fig. 2 is Fig. 1 along A direction view；
Fig. 3 is longitudinal sectional view of the present invention。
Detailed description of the invention
Fig. 1 is the structural representation that the present invention installs and uses, Fig. 2 is Fig. 1 along A direction view, Fig. 3 is longitudinal sectional view of the present invention, as shown in the figure: the crankcase of the present embodiment, described crankcase 1 is communicated with the lubricating oil splash duct 5 between the rocking arm installing space of crankcase 1 and cylinder assemblies；During use, crankcase inside crankshaft link assembly operationally can make lubricating oil form splashing, the lubricating oil splashed enters the rocking arm installing space (being positioned on cylinder head) of cylinder assembly by lubricating oil splash channel section, rocking arm and valve etc. are formed lubrication and cooling, owing to being splash lubrication, a small amount of lubricating oil can play good effect。
In the present embodiment, described lubricating oil splash duct 5 be positioned at electromotor connecting rod 2 major part arrange get rid of oil skip 3 get rid of oil splashing scope；As it can be seen, connecting rod 2 major part of the piston rod part of electromotor is provided with and gets rid of oil skip 3, described lubricating oil splash duct be positioned at get rid of oil skip get rid of oil splashing scope；Get rid of oil skip 3 (oil-throwing rod) and belong to the common components of put-put, get rid of oil direction as indicated in the figures by an arrow, belong to prior art, do not repeat them here；Lubricating oil splash duct be positioned at get rid of oil skip get rid of oil scope (such as getting rid of the motion tangent line of oil skip), be beneficial to and make more lubricating oil enter rocking arm installing space, form lubrication and cool down。
In the present embodiment, described lubricating oil splash duct 5 is directly through to rocking arm installing space；Directly run through and namely form straight hole, be more conducive to lubricating oil and directly splash to required lubricant housings, simple in construction, lubrication and good cooling results。
In the present embodiment, described lubricating oil splash duct 5 is passed through between hole 6 by hole 4 and exhaust valve push rod at inlet valve push rod；Owing to the installation of rocking arm is corresponding with the position of inlet valve push rod and exhaust valve push rod, the lubricating oil splashed by lubricating oil splash duct is more conducive to act on rocking arm, forms efficient lubrication；Inlet valve push rod is existing structure by hole and exhaust valve push rod by hole, does not repeat them here。
In the present embodiment, header structure sized by the cross section in described lubricating oil splash duct 5, the major part of described concentric reducer structure is avoided inlet valve push rod and is formed by extending to both sides behind hole by hole and exhaust valve push rod；Concentric reducer structure includes T-shaped structure, trapezium structure, triangular structure or by the one large one small structure of smooth curved transition, the present embodiment adopts the one large one small structure of smooth curved transition, namely for being made up of structure ascending gradually smoothed curve, stress is avoided to concentrate, and inlet valve push rod can be made full use of by hole and exhaust valve push rod by the space between hole, increase lubricating oil splash amount；The microcephaly of this concentric reducer structure passes through, between hole 6, to avoid backward both sides and expand gradually by hole 4 and exhaust valve push rod at inlet valve push rod, and both sides refer to passes through hole and the orientation by hole of the exhaust valve push rod to inlet valve push rod respectively, does not repeat them here。
In the present embodiment, the major part of described concentric reducer structure corresponds to cylinder body side, and this structure can strengthen the lubricating oil splash amount that rocking arm is overall further, and meanwhile, this major part also corresponds to inlet and exhaust valve splash lubrication oil, and cooling and lubricant effect are better。
In the present embodiment, described crankcase 1 is the crankcase of vertical type general-purpose petrol engine。
In the present embodiment, described lubricating oil splash duct 5 is upper and lower straight hole, is more conducive to passing through of lubricating oil, and ensures backflow。
What finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail with reference to preferred embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent replacement, without deviating from objective and the scope of technical solution of the present invention, it all should be encompassed in the middle of scope of the presently claimed invention。

Claims (9)

1. a crankcase, it is characterised in that: described crankcase is communicated with the lubricating oil splash duct between the rocking arm installing space of crankcase and cylinder assemblies。
2. crankcase according to claim 1, it is characterised in that: described lubricating oil splash duct be positioned at engine connecting rod big end arrange get rid of oil skip get rid of oil splashing scope。
3. crankcase according to claim 2, it is characterised in that: described lubricating oil splash duct is directly through to rocking arm installing space。
4. crankcase according to claim 3, it is characterised in that: described lubricating oil splash duct inlet valve push rod on crankcase is passed through between hole by hole and exhaust valve push rod。
5. crankcase according to claim 3, it is characterised in that: header structure sized by the cross section in described lubricating oil splash duct, the major part of described concentric reducer structure is avoided inlet valve push rod and is formed by extending to both sides behind hole by hole and exhaust valve push rod。
6. crankcase according to claim 5, it is characterised in that: the major part of described concentric reducer structure corresponds to engine cylinder-body side。
7. the crankcase according to claim 1 to 6 any claim, it is characterised in that: described crankcase is the crankcase of vertical type general-purpose petrol engine。
8. crankcase according to claim 7, it is characterised in that: described lubricating oil splash duct is upper and lower straight hole。
9. the crankcase according to claim 5 or 6, it is characterised in that: described concentric reducer structure is be made up of structure ascending gradually smoothed curve。
CN201610059203.7A 2016-01-28 2016-01-28 crankcase Active CN105697185B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610059203.7A CN105697185B (en) 2016-01-28 2016-01-28 crankcase

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610059203.7A CN105697185B (en) 2016-01-28 2016-01-28 crankcase

Publications (2)

Publication Number Publication Date
CN105697185A true CN105697185A (en) 2016-06-22
CN105697185B CN105697185B (en) 2018-11-16

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563986A (en) * 1983-09-09 1986-01-14 Kubota Ltd. Splash lubricated over head valve engine
CN1458394A (en) * 2003-04-23 2003-11-26 周亮俊 Forced lubrication in cylinder head cover of internal combustion engine
CN1483923A (en) * 2002-09-20 2004-03-24 重庆宗申技术开发研究有限公司 Pordable four-stroke gasoline engine
EP1666703A1 (en) * 2003-08-29 2006-06-07 Ji-Rong Hu A small four-stroke gasoline engine with oil mist lubrication
WO2008052403A1 (en) * 2006-10-28 2008-05-08 Wuxi Kipor Power Co., Ltd A lubricating device for a valve of an engine
US20100064995A1 (en) * 2005-06-23 2010-03-18 Yoshikazu Sato Engine valve operating system
CN205315141U (en) * 2016-01-28 2016-06-15 隆鑫通用动力股份有限公司 Crankcase of splash lubrication cylinder end

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563986A (en) * 1983-09-09 1986-01-14 Kubota Ltd. Splash lubricated over head valve engine
CN1483923A (en) * 2002-09-20 2004-03-24 重庆宗申技术开发研究有限公司 Pordable four-stroke gasoline engine
CN1458394A (en) * 2003-04-23 2003-11-26 周亮俊 Forced lubrication in cylinder head cover of internal combustion engine
EP1666703A1 (en) * 2003-08-29 2006-06-07 Ji-Rong Hu A small four-stroke gasoline engine with oil mist lubrication
US20100064995A1 (en) * 2005-06-23 2010-03-18 Yoshikazu Sato Engine valve operating system
WO2008052403A1 (en) * 2006-10-28 2008-05-08 Wuxi Kipor Power Co., Ltd A lubricating device for a valve of an engine
CN205315141U (en) * 2016-01-28 2016-06-15 隆鑫通用动力股份有限公司 Crankcase of splash lubrication cylinder end

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