CN102330593A - Connection structure of low-emission double-stroke gasoline engine silencer - Google Patents
Connection structure of low-emission double-stroke gasoline engine silencer Download PDFInfo
- Publication number
- CN102330593A CN102330593A CN201110279139A CN201110279139A CN102330593A CN 102330593 A CN102330593 A CN 102330593A CN 201110279139 A CN201110279139 A CN 201110279139A CN 201110279139 A CN201110279139 A CN 201110279139A CN 102330593 A CN102330593 A CN 102330593A
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- China
- Prior art keywords
- baffler
- nut
- bolt
- silencer
- pad
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- 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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- Exhaust Silencers (AREA)
- Connection Of Plates (AREA)
Abstract
The invention discloses a connection structure of a low-emission double-stroke gasoline engine silencer. The structure comprises a venting flange, a silencer pad, a silencer, a flat washer, a spring washer, a bolt and a nut. The connection structure is characterized in that the venting flange is symmetrically provided with two bolt holes; one side of the venting flange, which faces to a cylinder body, is provided with two nut arrangement chambers; the center line of the nut arrangement chambers and the center line of the bolt holes are coincident; and the bolt passes through the spring washer, the flat washer, the silencer and the spring washer to be connected with the nut to fix the silencer on the venting flange. According to the connection structure, the problem that the bolt is loosened because the temperature of the silencer side is overhigh can be effectively solved.
Description
Technical field
The present invention relates to low-discharge two-stroke gasoline engine, particularly a kind of baffler linkage structure of low-discharge two-stroke gasoline engine.
Background technique
Two-stroke gasoline engine is owing to the cause of its working principle, and its discharging is difficult to reach at present the requirement of the Abgasgesetz of promulgation just, must carry out external purification; The means of external purification make waste gas in baffler, carry out secondary combustion, therefore in baffler, to increase catalyzer at present; Satisfying under the situation of emission request, the temperature of baffler side cylinder body flanged surface reaches between 300 ℃～400 ℃, on the exhaust flange face of cylinder body, processes two tapped holes according to traditional Placement; With bolt pass baffler, the baffler pad is fixed on the exhaust flange of cylinder body, but this kind Placement is in the process of machine run, in the baffler owing to add catalyzer; Waste gas carries out secondary combustion in baffler, the temperature of baffler side, exhaust flange side reaches more than 300 ℃, and cylinder body is an aluminum alloy at present; Its tensile strength is reducing by 70% under the high temperature for a long time; Therefore screw-down torque is retained in about 20%, can not satisfy locking usage requirement, the loosening phenomenon of baffler often occurs.Therefore, be badly in need of wanting a kind of at high temperature with the firm connection structure connecting of baffler.
Summary of the invention
The linkage structure that the purpose of this invention is to provide a kind of low-discharge two-stroke gasoline engine baffler; Through being set, nut places the chamber on the cylinder body exhaust flange; Firmly be connected baffler on the exhaust flange through bolt, packing ring and nut; Make temperature be reduced to minimum, reached locking purpose for the influence of screw-down torque.
The technological scheme that the present invention takes is; A kind of low-discharge two-stroke gasoline engine baffler linkage structure; Draw together exhaust flange, baffler pad, baffler, plain washer, spring washer, bolt, nut; It is characterized in that: in exhaust flange, be symmetrically arranged with two bolts hole, be provided with two nuts at exhaust flange towards a side of cylinder body and place chambers, said nut is placed the chamber and is overlapped with said bolt hole center line; Bolt is fastened on baffler on the exhaust flange through dual mode: a kind of is that the threaded end of bolt passes spring washer, plain washer, baffler, baffler pad, said bolt hole successively and places indoor nut with said nut and be connected; Another kind is that the threaded end of bolt passes said bolt hole, baffler pad, baffler, plain washer, spring washer successively and is connected with nut.
Beneficial effect is: compare with traditional Placement, when high temperature, the tensile strength of nut is higher by 70% than the tensile strength of aluminum alloy screw thread during owing to connection, and the screw-down torque of screw is retained in about 90%, has reached and has loosened purpose.
Description of drawings
Fig. 1 is a scheme schematic representation of the present invention
Fig. 2 is that nut of the present invention is placed on the exploded view that nut is placed the chamber
Fig. 3 B is to view
Fig. 4 is that bolt head of the present invention is placed on the exploded view that nut is placed the chamber
Fig. 5 A is to view
Fig. 6 is the tightening torque comparison diagram of the present invention and existing technology bolt after petrol engine moves half an hour
Sequence number explanation in the accompanying drawing: 1, nut is placed the chamber; 2, exhaust flange; 3, baffler pad; 4, baffler; 5, plain washer; 6, spring washer; 7, bolt; 8, bolt hole; 9, nut; 10, baffler pad hole; 11, baffler hole; 12, bolt head.
Embodiment
Like Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, baffler linkage structure of the present invention is made up of exhaust flange 2 (nut is placed chamber 1, bolt hole 8), baffler pad 3 (baffler pad hole 10), baffler 4 (baffler hole 11), plain washer 5, spring washer 6, bolt 7 (bolt head 12), nut 9.
Nut is placed chamber 1 in the side of exhaust flange 2 towards cylinder body, and bolt hole 8 is symmetrical set for 2 li at exhaust flange, and two nuts place chamber 1 respectively with two bolts hole, 8 central lines; Exhaust flange 2 side of cylinder body dorsad is baffler pad 3, baffler 4, plain washer 5, spring washer 6 successively; When nut 9 was put into nut placement chamber 1, bolt 7 threaded end penetrated and nut 9 connections from spring washer 6 ends successively; When bolt head 12 was put into nut placement chamber 1, threaded end penetrated and nut 9 connections from bolt hole 8 successively.
Concrete working procedure is following:
Connecting means one: nut 9 is put into nut place chamber 1, the threaded end of bolt 7 penetrates spring washer 6, plain washer 5, baffler 4, baffler pad 3, bolt hole 8 and nut 9 successively and screws.
Connecting means two: bolt head 12 is put into nut and is placed chamber 1, and threaded end penetrates bolt hole 8, baffler pad 3, baffler 4, plain washer 5, spring washer 6 and nut 8 successively and screws.
Beneficial effect:
Compare according to the baffler Placement of foregoing invention design and traditional direct each 10 of Placements that on exhaust flange, process the baffler of screw thread, it is fastening to use the moment of torsion of 10N.m to carry out simultaneously these two kinds of Placements, and machine run is after 30 minutes; Again detect the tightening torque of screw; The result is as shown in Figure 6, and as can be seen from the figure, the tightening torque of baffler screw of the present invention keeps about 90%; Satisfy usage requirement; And the tightening torque of the baffler screw of existing technology keeps about 20%, is prone to become flexible, and does not satisfy usage requirement.
Claims (1)
1. low-discharge two-stroke gasoline engine baffler linkage structure; Comprise exhaust flange, baffler pad, baffler, plain washer, spring washer, bolt, nut; It is characterized in that: in exhaust flange, be symmetrically arranged with two bolts hole; Be provided with two nuts at exhaust flange towards a side of cylinder body and place chambers, said nut is placed the chamber and is overlapped with said bolt hole center line; Bolt is fastened on baffler on the exhaust flange through dual mode: a kind of is that the threaded end of bolt passes spring washer, plain washer, baffler, baffler pad, said bolt hole successively and places indoor nut with said nut and be connected; Another kind is that the threaded end of bolt passes said bolt hole, baffler pad, baffler, plain washer, spring washer successively and is connected with nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110279139 CN102330593B (en) | 2011-08-26 | 2011-08-26 | Connection structure of low-emission double-stroke gasoline engine silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110279139 CN102330593B (en) | 2011-08-26 | 2011-08-26 | Connection structure of low-emission double-stroke gasoline engine silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102330593A true CN102330593A (en) | 2012-01-25 |
| CN102330593B CN102330593B (en) | 2013-02-13 |
Family
ID=45482520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110279139 Active CN102330593B (en) | 2011-08-26 | 2011-08-26 | Connection structure of low-emission double-stroke gasoline engine silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102330593B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10266851A (en) * | 1997-03-21 | 1998-10-06 | Mitsubishi Heavy Ind Ltd | Exhaust device of engine |
| CN1157531C (en) * | 1999-10-20 | 2004-07-14 | 德古萨股份公司 | Muffler with catalytic device for two-stroke engine and its catalytic device |
| US20110133451A1 (en) * | 2008-04-04 | 2011-06-09 | Maxtech Consumer Products Limited | Flange assembly with improved serviceability |
| CN202250324U (en) * | 2011-08-26 | 2012-05-30 | 山东华盛农业药械有限责任公司 | Connection structure for silencer of low-emission two-stroke gasoline engine |
-
2011
- 2011-08-26 CN CN 201110279139 patent/CN102330593B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10266851A (en) * | 1997-03-21 | 1998-10-06 | Mitsubishi Heavy Ind Ltd | Exhaust device of engine |
| CN1157531C (en) * | 1999-10-20 | 2004-07-14 | 德古萨股份公司 | Muffler with catalytic device for two-stroke engine and its catalytic device |
| US20110133451A1 (en) * | 2008-04-04 | 2011-06-09 | Maxtech Consumer Products Limited | Flange assembly with improved serviceability |
| CN202250324U (en) * | 2011-08-26 | 2012-05-30 | 山东华盛农业药械有限责任公司 | Connection structure for silencer of low-emission two-stroke gasoline engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102330593B (en) | 2013-02-13 |
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