CN105626772B - Small two stroke gasoline toggle - Google Patents
Small two stroke gasoline toggle Download PDFInfo
- Publication number
- CN105626772B CN105626772B CN201610150043.7A CN201610150043A CN105626772B CN 105626772 B CN105626772 B CN 105626772B CN 201610150043 A CN201610150043 A CN 201610150043A CN 105626772 B CN105626772 B CN 105626772B
- Authority
- CN
- China
- Prior art keywords
- counterweight
- trunnion
- crank arms
- booster
- mounting blocks
- 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.)
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Classifications
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/22—Compensation of inertia forces
- F16F15/24—Compensation of inertia forces of crankshaft systems by particular disposition of cranks, pistons, or the like
-
- 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
- F02B75/00—Other engines
- F02B75/32—Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/22—Compensation of inertia forces
- F16F15/26—Compensation of inertia forces of crankshaft systems using solid masses, other than the ordinary pistons, moving with the system, i.e. masses connected through a kinematic mechanism or gear system
Abstract
The present invention relates to the technical field of engine, more particularly, to a kind of hand-held type miniature two-stroke gasoline engine toggle, including connecting rod and bent axle, bent axle is provided with two crank arms, it is fixedly connected between two crank arms by the middle trunnion of eccentric setting, connecting rod is on middle trunnion, forward and backward trunnion is respectively equipped with the lateral wall of two crank arms, balance weight is respectively symmetrically provided with two crank arms on the opposite side relative with middle trunnion, counterweight booster block is respectively equipped with the lateral wall of two crank arms, is fixedly connected between two counterweight booster blocks.Advantage is：The power ascension of gasoline engine, oil consumption reduce, while meet the standard requirement that world security provided or discharged certification, reduce the R＆D costs of product, while also enhance comfort level.
Description
Technical field
The present invention relates to the technical field of engine, more particularly, to a kind of hand-held type miniature two-stroke gasoline engine crank
Linkage.
Background technology
For the greater engine power under conditions of two-stroke gasoline engine weight and size is not increased, to meet professional work
Having the demand of market user, existing most technological improvements are all to increase gasoline engine cylinder and piston diameter in the industry, from
And reach increase power discharge capacity to add powerful purpose.Such technical scheme is simple, designing technique and manufacturing process require
It is low, and the weight, volume and cost of gasoline engine will not be increased, received substantially by domestic and international most of markets.But this skill
The shortcomings that art scheme is also fairly obvious：1st, it will certainly be increased and started come hoisting power with the means of greater engine discharge capacity
Engine oil consumption and exhaust emissions value, make product become worse in terms of fuel economy and the feature of environmental protection；2nd, inblock cylinder is increased rashly
Amount, but toggle does not do any optimization design, and engine can be caused to be vibrated when working and increased, the use of product is comfortable
Property be deteriorated；3rd, due to both at home and abroad limiting more the regulation of gasoline engine using discharge capacity as important indicator, after discharge capacity increases power ascension
Engine probably to follow the requirement of higher discharge capacity level standard, most of work(performance will be verified again, many international
Security regulations or discharge certification must deploy again, and greatly deflecting improves research and development of products cost.
The content of the invention
For above-mentioned the shortcomings of the prior art, it is an object of the invention to provide a kind of power ascension of gasoline engine, oil
Consumption reduces, while meets the standard requirement that world security provided or discharged certification, reduces small-sized the two of the R＆D costs of product
Stroke gasoline engine toggle.
To realize above-mentioned purpose, the invention provides following technical scheme：
A kind of small two stroke gasoline toggle, including connecting rod and bent axle, bent axle are provided with two cranks
Arm, be fixedly connected by the middle trunnion of eccentric setting between two crank arms, connecting rod on middle trunnion, two crank arms it is outer
It is respectively equipped with forward and backward trunnion in side wall, is respectively symmetrically provided with balance on two crank arms on the opposite side relative with middle trunnion
Block, counterweight booster block is respectively equipped with the lateral wall of two crank arms, is fixedly connected between two counterweight booster blocks.
The present invention is further arranged to：The both sides of each crank arm are fixed with auxiliary mounting blocks, Mei Gequ respectively
Two auxiliary mounting blocks and crank arm and balance weight on shaft arm form ellipsoidal structure.
The present invention is further arranged to：Auxiliary mounting blocks on two crank arm be located in two counterweight booster blocks it
Between, it is fixedly connected between two counterweight booster blocks by extending through the screw of corresponding auxiliary mounting blocks.
The present invention is further arranged to：The counterweight booster block or/and auxiliary mounting blocks are made up of high-temperature-resnylont nylont material.
The present invention is further arranged to：The auxiliary mounting blocks are hollow-core construction.
The present invention is further arranged to：The thickness of the auxiliary mounting blocks is not more than the thickness of crank arm.
The present invention is further arranged to：The gap slot of sector is respectively equipped with the two counterweights booster block, gap slot can cover
On corresponding forward and backward trunnion.
The present invention is further arranged to：The distance between breach of the gap slot is less than gap slot or front/rear trunnion
Diameter.
The present invention is further arranged to：The counterweight booster block is hollow-core construction.
The present invention is further arranged to：The counterweight booster block is close including counterweight supercharging housing and with counterweight supercharging housing
The closure of connection is sealed, hollow cavity is formed between closure and counterweight supercharging housing.
By using above-mentioned technical proposal, the technique effect that the present invention is reached is：By adding counterweight booster block, have
Effect increases space-consuming of the bent axle in crankcase, and then just greatly reduces the residual volume of crankcase so that bent
The utilization rate of axle box greatly promotes, and the transfer efficiency gas of crankcase is higher, and scavenging pressure is obviously improved, while also causes bent axle
Case not enough will not produce fuel oil to the vacuum oil suction improved efficiency of carburetor, carburetor because crankcase air inlet latter stage vacuum
Regurgitate, greatly improve fuel oil service efficiency, reduce oil consumption；The auxiliary mounting blocks of hollow-core construction are employed in addition and are matched somebody with somebody
Weight booster block, the construction weight that counterweight is pressurized effectively is accomplished that most gently position is then axisymmetricly installed with crank, so neither
Engine weight and cost can significantly be increased, it is possibility to have alleviate the vibration brought after engine power lifting, product in effect ground
Lifting is obvious in terms of operation comfort.
Brief description of the drawings
The invention will now be described in further detail with reference to the accompanying drawings.
Fig. 1 is the operation principle schematic diagram of traditional small two stroke gasoline.(the big arrow in figure refers to that fuel oil is anti-
Direction is sprayed, small arrow refers to fuel mixture approach axis and discharge directions)
Fig. 2 is the structural representation of traditional toggle.
Fig. 3 is the operation principle schematic diagram using the small two stroke gasoline of the toggle of the present invention.
Fig. 4 is the crank, bent axle and the assembly structure diagram for aiding in mounting blocks of the linkage of the present invention.
Fig. 5 is the structural representation of the counterweight booster block of the present invention.
Embodiment
Reference picture 1~5, is a kind of small two stroke gasoline toggle disclosed by the invention, including connecting rod
10 and bent axle 11, bent axle 11 is provided with two crank arms 12, solid by the middle trunnion 13 of eccentric setting between two crank arms 12
Fixed connection, connecting rod 10 are respectively equipped with forward and backward trunnion 14,15 on middle trunnion 13 on the lateral wall of two crank arms 12, and two
Balance weight 16 is respectively symmetrically provided with crank arm 12 on the opposite side relative with middle trunnion 13, on the lateral wall of two crank arms 12
Counterweight booster block 17 is respectively equipped with, is fixedly connected between two counterweight booster blocks 17.In general, the crankcase of two-stroke gasoline engine
All it is for transfer combustion mixture, combustion mixture is pressed into scavenging channel of cylinder by it by pressure caused by descent of piston,
Combustion gas enters combustion chamber of air cylinder by scavenging air belt and forms explosive combustion, and the mechanical energy efficiency that engine obtains in this course is just
It is referred to as " power output ".
Although it is in order to allow more combustion gas to participate in burning, so as to obtain bigger mechanical energy efficiency (output work to increase discharge capacity
Rate), but engine is obtained more combustion gas, lifting output with the mode for lifting crankcase scavenging efficiency in operational version
Power, effect are more notable.Counterweight pressurized construction is added on existing toggle, bent axle can be reduced as far as possible
Case volume, make crankcase transfer efficiency gas higher, that is, lift scavenging pressure.Can also be as far as possible by counterweight pressurized construction weight
Amount accomplishes that most gently the both sides of each crank arm 12 are fixed with respectively aids in mounting blocks 18, two auxiliary on each crank arm 12
Mounting blocks 18 and crank arm 12 and balance weight 16 form ellipsoidal structure.Generally, in order to adapt to design, two auxiliary peaces
Dress block 18 and crank arm 12 and balance weight 16 form the structure of circle.Auxiliary mounting blocks 18 on two crank arms 12 are located in
Between two counterweight booster blocks 17, consolidated between two counterweight booster blocks 17 by extending through the screw of corresponding auxiliary mounting blocks 18
Fixed connection.Wherein, it is hollow-core construction to aid in mounting blocks 18, and the thickness of auxiliary mounting blocks 18 is not more than the thickness of crank arm 12.Together
When, the gap slot 19 of sector is respectively equipped with two counterweight booster blocks 17, gap slot 19 can be sheathed on corresponding forward and backward trunnion
14th, on 15.The distance between breach of gap slot 19 is less than the diameter of gap slot 19 or front/rear trunnion 14/15.Wherein, match somebody with somebody
Weight booster block 17 is hollow-core construction.Certainly or counterweight booster block 17 includes counterweight supercharging housing 20 and is pressurized with counterweight
The closure 21 that housing 20 is tightly connected, hollow cavity is formed between closure 21 and counterweight supercharging housing 20.On each crank arm
The positions of auxiliary mounting blocks then axisymmetricly installed with crank, so both will not significantly increase engine weight and cost,
The vibration brought after engine power lifting can also effectively be alleviated, gone up not down in terms of product operation comfortableness.Due to song
Axle box volume is greatly lowered, and crankcase will not enter to the vacuum oil suction improved efficiency of carburetor, carburetor because of crankcase
Gas latter stage vacuum not enough produces fuel oil and regurgitates that (oil that i.e. carburetor sprays can spray in this moment toward crankcase opposite direction
Penetrate, this is the common fault of two stroke engine), fuel oil service efficiency is greatly improved, reduces oil consumption, it is such in general
Structure can reduce crankcase volume 25%-30%, and scavenging efficiency also accordingly improves 20%-25%, and power ascension is about
15% or so.In order to reach the purpose low with cost in light weight, the design of counterweight pressurized construction should be the hollow seal of thin-walled
Structure, counterweight booster block or/and auxiliary mounting blocks high-temperature-resnylont nylont material.In order to reach sealing purpose, it is necessary to melted with plastics
Weldering or friction welding technological will bond close between body and closure.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore：It is all according to
The equivalence changes that structure, shape, the principle of the present invention is done, all should be covered by within protection scope of the present invention.
Claims (6)
1. a kind of small two stroke gasoline toggle, including connecting rod and bent axle, bent axle is provided with two crank arms,
It is fixedly connected between two crank arms by the middle trunnion of eccentric setting, connecting rod is on middle trunnion, the outside of two crank arms
It is respectively equipped with forward and backward trunnion on wall, balance weight is respectively symmetrically provided with the opposite side relative with middle trunnion on two crank arms,
It is characterized in that：Counterweight booster block is respectively equipped with the lateral wall of two crank arms, is fixedly connected between two counterweight booster blocks；It is described
The both sides of each crank arm are fixed with auxiliary mounting blocks respectively, two auxiliary mounting blocks and crank arm on each crank arm and
Balance weight forms ellipsoidal structure；Auxiliary mounting blocks on two crank arm are located between two counterweight booster blocks, and two match somebody with somebody
It is fixedly connected between weight booster block by extending through the screw of corresponding auxiliary mounting blocks；The counterweight booster block or/and
Auxiliary mounting blocks are made up of high-temperature-resnylont nylont material；The auxiliary mounting blocks are hollow-core construction.
2. small two stroke gasoline toggle according to claim 1, it is characterised in that：The auxiliary peace
The thickness for filling block is not more than the thickness of crank arm.
3. small two stroke gasoline toggle according to claim 1, it is characterised in that：Two counterweight
The gap slot of sector is respectively equipped with booster block, gap slot can be sheathed on corresponding forward and backward trunnion.
4. small two stroke gasoline toggle according to claim 3, it is characterised in that：The gap slot
The distance between breach be less than the diameter of gap slot or front/rear trunnion.
5. small two stroke gasoline toggle according to claim 4, it is characterised in that：The counterweight booster block
For hollow-core construction.
6. small two stroke gasoline toggle according to claim 5, it is characterised in that：The counterweight increases
Briquetting include counterweight supercharging housing and with the closure that be connected of counterweight supercharging housing seal, closure and counterweight be pressurized housing it
Between form hollow cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610150043.7A CN105626772B (en) | 2016-03-16 | 2016-03-16 | Small two stroke gasoline toggle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610150043.7A CN105626772B (en) | 2016-03-16 | 2016-03-16 | Small two stroke gasoline toggle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105626772A CN105626772A (en) | 2016-06-01 |
| CN105626772B true CN105626772B (en) | 2018-03-30 |
Family
ID=56041990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610150043.7A Active CN105626772B (en) | 2016-03-16 | 2016-03-16 | Small two stroke gasoline toggle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105626772B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387244B (en) * | 2017-08-31 | 2023-06-30 | 浙江中马园林机器股份有限公司 | Control mechanism of gasoline engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2208101Y (en) * | 1994-03-07 | 1995-09-20 | 北内集团总公司 | Gasoline engine |
| CN105090231A (en) * | 2014-05-07 | 2015-11-25 | 雅马哈发动机株式会社 | Internal combustion engine and straddle-type vehicle equipped with engine |
| CN205423682U (en) * | 2016-03-16 | 2016-08-03 | 浙江中马园林机器股份有限公司 | Small -size two cycle crank link mechanism for gasoline engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002005236A (en) * | 2000-06-16 | 2002-01-09 | Honda Motor Co Ltd | Crankshaft of internal-combustion engine |
-
2016
- 2016-03-16 CN CN201610150043.7A patent/CN105626772B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2208101Y (en) * | 1994-03-07 | 1995-09-20 | 北内集团总公司 | Gasoline engine |
| CN105090231A (en) * | 2014-05-07 | 2015-11-25 | 雅马哈发动机株式会社 | Internal combustion engine and straddle-type vehicle equipped with engine |
| CN205423682U (en) * | 2016-03-16 | 2016-08-03 | 浙江中马园林机器股份有限公司 | Small -size two cycle crank link mechanism for gasoline engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105626772A (en) | 2016-06-01 |
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| GR01 | Patent grant |