CN207974889U - Municipal cast-cutting saw engine cylinder body - Google Patents
Municipal cast-cutting saw engine cylinder body Download PDFInfo
- Publication number
- CN207974889U CN207974889U CN201820311527.XU CN201820311527U CN207974889U CN 207974889 U CN207974889 U CN 207974889U CN 201820311527 U CN201820311527 U CN 201820311527U CN 207974889 U CN207974889 U CN 207974889U
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- China
- Prior art keywords
- scavenging
- cylinder body
- end cap
- groove
- air inlet
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Abstract
The utility model discloses a kind of municipal cast-cutting saw engine cylinder bodies, including cylinder body, cylinder body is equipped with piston hole, cylinder body is equipped with cooling fin, it is respectively equipped with scavenging groove on the symmetrical both sides of cylinder body, the slot bottom of scavenging groove is equipped with two slots, interval between two slots is equipped with partition board, scavenging end cap is configured on the scavenging groove, scavenging end cap outer wall is equipped with heat sink, the inner wall of scavenging end cap is equipped with baffler, and when baffler and baffle contacts on scavenging end cap, air inlet storage chamber and outlet storage chamber are formed between scavenging end cap and scavenging groove.It just realizes in this way and increases that gas-swept space, thermal diffusivity be good and the technique effect of dependable performance.
Description
Technical field
The utility model is related to a kind of engine cylinder bodies, and in particular to a kind of municipal administration cast-cutting saw engine cylinder body.
Background technology
The metal material that municipal cast-cutting saw is primarily used for cutting unwanted vegetation branch and diameter is smaller or hardness is small,
General power is not very high in work, and also to easy to carry, therefore the cylinder body of engine is substantially all can use body
The smaller two stroke engine of product at work due to engine will produce a large amount of heat, these heats need row in time
Go out.Currently, to be in the air capacity stored in scavenging air belt when running at high speed on the low side for two stroke engine, not only there is air in when scavenging,
Therefore also gaseous mixture of the part without burning, which participates in scavenging, can't completely eliminate the compounds such as HC and CO in tail gas
Discharge, be unfavorable for environmental protection.
Invention content
To solve the above problems, the purpose of this utility model is to provide a kind of increase gas-swept space, thermal diffusivity it is good and
The municipal cast-cutting saw engine cylinder body of dependable performance.
To achieve the above object, the utility model provides following technical solution：A kind of municipal administration cast-cutting saw engine cylinder body,
Including cylinder body, the cylinder body be equipped with piston hole, the cylinder body be equipped with along cylinder length direction arrangement and it is annular in shape
Cooling fin, is respectively equipped with scavenging groove on the symmetrical both sides of the cylinder body, the slot bottom of the scavenging groove be equipped with two with
The slot that the piston hole communicates, the interval between two slots are equipped with partition board, scavenging end cap, institute are configured on the scavenging groove
The scavenging end cap outer wall stated is equipped with the heat sink being arranged in order, and the inner wall of the scavenging end cap is equipped with and the baffle contacts
Baffler, on the flange face of the cylinder body be equipped with transfer port corresponding with the slot, be additionally provided on the cylinder body
The slot bottom both sides of air inlet groove and venthole, the air inlet groove are respectively equipped with the first air admission hole, on the air inlet groove
It is additionally provided with the second air admission hole, configures air inlet end cap on the air inlet groove, the inlet end is covered equipped with described the
The first connecting hole that one air admission hole communicates, the inlet end, which covers, to be additionally provided with and second air admission hole communicates second connect
Hole, when baffler and baffle contacts on the scavenging end cap, the shape between the scavenging end cap and the scavenging groove
At air inlet storage chamber and outlet storage chamber.
Protrusive board is positioned on the lower end of the air inlet groove, the bottom setting of the positioning protrusive board is in arc-shaped, described
Inlet end is covered equipped with the arc groove to match with the positioning protrusive board.
This structure of the utility model, when work, the first air admission hole and the second air inlet that air is covered by inlet end
Hole is distinguished in cylinder block, and air is stored in through piston in outlet storage chamber, and air enters cylinder by air inlet storage chamber when scavenging
Volumetric combustion room scavenging, is achieved increase gas-swept space, it is possible thereby to reduce part existing for common two-stroke gasoline engine
The phenomenon that unburned gaseous mixture is escaped with exhaust gas effectively reduces the compound emissions such as HC and CO in tail gas, while on cylinder body
Heat sink on cooling fin and scavenging end cap can effectively improve heat dissipation performance, just realize increase gas-swept space, thermal diffusivity in this way
Good and dependable performance technique effect.
The utility model is further described with reference to the accompanying drawings and detailed description.
Description of the drawings
Fig. 1 is the front perspective view of specific embodiment of the present invention
Fig. 2 is the rear perspective view of specific embodiment of the present invention；
Fig. 3 is the stereogram of scavenging end cap in specific embodiment of the present invention；
Fig. 4 is the solid of air inlet end cap in specific embodiment of the present invention.
Specific implementation mode
The utility model is specifically described below by embodiment, is served only for carrying out the utility model further
Illustrate, should not be understood as the restriction to scope of protection of the utility model.
As shown in Fig. 1-Fig. 4, the utility model discloses a kind of municipal cast-cutting saw engine cylinder body, including cylinder body 1, cylinders
Body 1 is equipped with piston hole 11, and cylinder body 1 is equipped with along the arrangement of 1 length direction of cylinder body and cooling fin 12 annular in shape, in cylinder body 1
Scavenging groove 13 is respectively equipped on symmetrical both sides, the slot bottom of scavenging groove 13 is equipped with two slots 131 communicated with piston hole 11,
Interval between two slots 131 is equipped with partition board 132, and scavenging end cap 2,2 outer wall of scavenging end cap are configured on the scavenging groove 13
It is equipped with the heat sink 21 being arranged in order, the inner wall of scavenging end cap 2 is equipped with the baffler 22 contacted with partition board 132, in cylinder body 1
Flange face be equipped with transfer port 3 corresponding with slot 131, air inlet groove 5 and venthole 4, air inlet are additionally provided on cylinder body 1
The slot bottom both sides of groove 5 are respectively equipped with the first air admission hole 51, and the second air admission hole 52 is additionally provided on air inlet groove 5, recessed in air inlet
Air inlet end cap 6 is configured on slot 5, air inlet end cap 6 is equipped with the first connecting hole 61 communicated with the first air admission hole 51, air inlet end cap 6
On be additionally provided with the second connecting hole 62 communicated with the second air admission hole 52.
When baffler 22 on scavenging end cap 2 is contacted with partition board 132, formed between scavenging end cap 2 and scavenging groove 13
Air inlet storage chamber 7 and outlet storage chamber 8, air inlet storage chamber 7 and outlet storage chamber 8 pass through respective slot 131 and piston hole 11
It communicates.In this way can air and gaseous mixture disengaging can be obtained effective buffering, increase scavenging air, make to prevent unburned gaseous mixture
The phenomenon that escaping with exhaust gas.
Protrusive board 9 is positioned on the lower end of air inlet groove 5, the bottom setting of positioning protrusive board 9 is in arc-shaped, on air inlet end cap 6
Equipped with the arc groove 63 to match with positioning protrusive board 9.Make the installation of air inlet end cap relatively reliable in this way.
This structure of the utility model, when work, air by the first air admission hole 51 and second on air inlet end cap 6 into
Stomata 52 is distinguished in cylinder block 1, and air is stored in through piston in outlet storage chamber 8, and air passes through air inlet storage chamber 7 when scavenging
Into 1 combustion chamber scavenging of cylinder body, increase gas-swept space is achieved, exists it is possible thereby to reduce common two-stroke gasoline engine
The unburned gaseous mixture in part the phenomenon that escaping with exhaust gas, effectively reduce the compound emissions such as HC and CO in tail gas, while cylinder
The heat sink 21 on cooling fin 12 and scavenging end cap 2 on body 1 can effectively improve heat dissipation performance, just realize increase scavenging in this way
Space, thermal diffusivity be good and the technique effect of dependable performance.
Claims (2)
1. a kind of municipal administration cast-cutting saw engine cylinder body, including cylinder body, the cylinder body are equipped with piston hole, it is characterised in that：Institute
The cylinder body stated is equipped with along cylinder length direction arrangement and cooling fin annular in shape, is set respectively on the symmetrical both sides of the cylinder body
Have a scavenging groove, the slot bottom of the scavenging groove is equipped with two slots communicated with the piston hole, between two slots between
It is equipped with partition board every place, scavenging end cap is configured on the scavenging groove, the scavenging end cap outer wall is dissipated equipped with what is be arranged in order
Hot plate, the inner wall of the scavenging end cap are equipped with the baffler with the baffle contacts, are equipped on the flange face of the cylinder body
Transfer port corresponding with the slot is additionally provided with air inlet groove and venthole on the cylinder body, the air inlet groove
Slot bottom both sides are respectively equipped with the first air admission hole, and the second air admission hole is additionally provided on the air inlet groove, in the air inlet groove
Upper configuration air inlet end cap, the inlet end are covered equipped with the first connecting hole communicated with first air admission hole, the air inlet
The second connecting hole communicated with second air admission hole is additionally provided on end cap, the baffler on the scavenging end cap connects with partition board
When touching, air inlet storage chamber and outlet storage chamber are formed between the scavenging end cap and the scavenging groove.
2. municipal administration cast-cutting saw engine cylinder body according to claim 1, it is characterised in that：In the lower end of the air inlet groove
The bottom setting of upper positioning protrusive board, the positioning protrusive board is in arc-shaped, and the inlet end, which covers, to be equipped with and the positioning protrusive board
The arc groove to match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820311527.XU CN207974889U (en) | 2018-03-07 | 2018-03-07 | Municipal cast-cutting saw engine cylinder body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820311527.XU CN207974889U (en) | 2018-03-07 | 2018-03-07 | Municipal cast-cutting saw engine cylinder body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207974889U true CN207974889U (en) | 2018-10-16 |
Family
ID=63764867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820311527.XU Active CN207974889U (en) | 2018-03-07 | 2018-03-07 | Municipal cast-cutting saw engine cylinder body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207974889U (en) |
-
2018
- 2018-03-07 CN CN201820311527.XU patent/CN207974889U/en active Active
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant |