CN2522623Y - Diesel engine supercharger oil-returnpipe assembly - Google Patents
Diesel engine supercharger oil-returnpipe assembly Download PDFInfo
- Publication number
- CN2522623Y CN2522623Y CN 01252311 CN01252311U CN2522623Y CN 2522623 Y CN2522623 Y CN 2522623Y CN 01252311 CN01252311 CN 01252311 CN 01252311 U CN01252311 U CN 01252311U CN 2522623 Y CN2522623 Y CN 2522623Y
- Authority
- CN
- China
- Prior art keywords
- flange
- pipe
- diesel engine
- assembly
- oil
- 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.)
- Expired - Fee Related
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- Exhaust Silencers (AREA)
- Diaphragms And Bellows (AREA)
Abstract
The utility model relates to a diesel engine supercharger oil-return pipe assembly. The utility model is characterized in that the supercharger oil-return pipe assembly mainly consists of a metal pipe and a flange. The metal wave pipe is an integrated body without an interfaced transitional pipe; one end of the metal wave pipe is inserted into a central hole of the flange and an opening is expanded with edges overturned to form an annular surface. With use of the metal wave pipe in the oil-return pipe assembly, an original rigid structure is changed into flexible connection. The utility model has no matching, no welding of flange and hard pipe and no middle transitional section. The oil-return pipe assembly overcomes the problems of easy breaking and loosening of welding points, and poor sealing performances in original rigid matching. The utility model improves reliability, facilitates assembly and lowers production costs.
Description
Technical field: the utility model relates to a kind of diesel engine pressurized machine return tube assembly, belongs to mechanical field.
Background technique: diesel engine pressurized machine return tube assembly is used for the pressurized machine lubricating oil return, and an end is connected with pressurized machine by flange, and the other end inserts the engine cylinder-body oilhole.Except that the sealing of routine, heatproof, anti-embroider etc. require, also need stretchability preferably, when temperature variation, expanding with heat and contract with cold of pipeline can not cause pipeline stress to concentrate, and influences intensity and sealing; Need better antivibration ability simultaneously, when general diesel engine is moved, bring dither for its pipeline, its easy fracture, solder joint are pitched, cause leakage.Existing diesel engine pressurized machine return tube assembly connects by tightening transition by rubber pipe by lock ring through two hard tubes of highi degree of accuracy tube bender processing bending forming, one of them hard tube inserts an end of motor body, for guaranteeing and the housing bore sealing, adopt interference fit, another hard tube one end adopts welding manner to be connected with flange.This return tube assembly is made up of 6 component, and oil pipe flange and hard tube weld, hard tube and rubber pipe transition position, and leakage of oil hidden danger in three places is arranged.Hard tube inserts shell section owing to adopt interference fit, assembles very difficult.Whole flanged surface is a sealing surface, guarantees its sealability, requires the flange surface planeness higher.This technological method complex structure, accuracy of manufacturing requires high, and line seal hidden danger is more.
Summary of the invention: the utility model for solve diesel engine pressurized machine return tube assembly easy-rupturing, solder joint easily pitches, the more problem of sealing hidden danger, proposed a kind of diesel engine pressurized machine return tube assembly, it is characterized in that: described pressurized machine return tube assembly mainly is that metal bellows and flange constitute; Described metal bellows is an integral body of no transition tube butt joint, and the enlarging flange was anchor ring after described metal bellows one end inserted in the described flange intermediate hole.This return tube assembly is owing to adopt metal bellows, original rigid construction changed into flexibly connect, do not have and cooperate, cancelled flange and hard tube welding and middle excessively section, overcome original rigidity and cooperated easy-rupturing and solder joint pitches, sealing is relatively poor problem, improved reliability, and easy to assembly, reduced cost of production.
Description of drawings: Fig. 1, diesel pressure booster return tube assembly structure schematic representation described in the utility model.
Fig. 2, diesel pressure booster return tube assembly structure schematic representation A described in the utility model portion partial enlarged drawing.
Embodiment: as shown in Figure 1, this diesel pressure booster return tube assembly is made up of metal bellows 1, " O " RunddichtringO 3 and flange 5 three parts, and is connected with pressurized machine by flange 5; Wherein metal bellows 1 is an integral body of no transition tube butt joint, and the enlarging flange was anchor ring after an end inserted in flange 5 intermediate holes.The L1 section of the other end of metal bellows 1 is for inserting the motor body sealed end, this shaped segment has two seal grooves 2, " O " RunddichtringO that fluorine rubber is made is housed respectively in the groove 2, during assembling the L1 section being inserted the motor body oilhole gets final product, there is thrust boss 4 on L1 section right side, is used to locate the sealed end insertion depth; The L3 section is a bellows segment, makes things convenient for the return tube assembly crooked in assembly process, and this section has the typing flexural property, and not resilience after the bending, changes original rigid construction for flexibly connecting, and produces resonance when having avoided engine operation, causes fatigue damage; The L2 section is a changeover portion, and ripple to hermetic terminal divides via greatly progressively dwindling, and guarantees that directly being not less than return tube assembly minimum at the bottom of the corrugated portion stimulates the menstrual flow, and keeps oil return unimpeded, and oil pipe produces stress in the distortion connecting part when effectively preventing to vibrate, and causes faults such as fracture; The L4 section be ripple to the flange part changeover portion, structure and L2 section are similar, function is identical; As shown in Figure 2, metal bellows 1 is the flange mode with the Placement of flange 4, is about to bellows 1 at flange 5 outer flare flange, on the one hand with flange 5 and bellows 1 location, forming width on the other hand is the sealing anchor ring of b, when flange 5 passes through screw-driving with pressurized machine, seal, relatively original structure, sealing surface reduces, the flanged surface required precision is reduced, but sealing surface symmetrically, seals more reliable.Bellows partly adopts 304 or the 316L stainless steel material, wall thickness 0.3mm.This metal bellows adopts the thin-wall stainless steel material, and ripple is the tapered undergauge structure of progressively transition to seal section and flange section.
This return tube assembly oil resistant temperature is more than 120 ℃, and the 7.5Kmpa air tightness test does not have leakage, and the continuous 180 degree bendings of fixing a point are not ruptured more than 20 times, and performance satisfies the technical requirements of diesel engine pressurized machine return tube fully.Improve greatly than original structure oil pipe reliability, when production line assembles, save man-hour more than 80%.
Claims (3)
1, a kind of diesel engine pressurized machine return tube assembly is characterized in that: described pressurized machine return tube assembly mainly is that metal bellows and flange constitute; Described metal bellows is an integral body of no transition tube butt joint, and the enlarging flange was anchor ring after described metal bellows one end inserted in the described flange intermediate hole.
2, diesel engine pressurized machine return tube assembly as claimed in claim 1, it is characterized in that: the described metal bellows the other end is provided with sealed groove, in the described groove viton seal ring is housed.
3, diesel engine pressurized machine return tube assembly as claimed in claim 1 is characterized in that: described metal bellows ripple is the tapered undergauge structure of progressively transition to seal section and flange section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01252311 CN2522623Y (en) | 2001-10-30 | 2001-10-30 | Diesel engine supercharger oil-returnpipe assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01252311 CN2522623Y (en) | 2001-10-30 | 2001-10-30 | Diesel engine supercharger oil-returnpipe assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2522623Y true CN2522623Y (en) | 2002-11-27 |
Family
ID=33662056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01252311 Expired - Fee Related CN2522623Y (en) | 2001-10-30 | 2001-10-30 | Diesel engine supercharger oil-returnpipe assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2522623Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101607340B (en) * | 2008-06-19 | 2012-03-21 | 柳州市美通机械制造有限责任公司 | Automatic welding method and device for parts of outlet pipe of diesel engine |
| CN102588038A (en) * | 2012-02-22 | 2012-07-18 | 中国重汽集团济南动力有限公司 | Oil return pipe for supercharger |
| CN103016096A (en) * | 2012-12-26 | 2013-04-03 | 安徽江淮汽车股份有限公司 | Supercharger oil return tube with improved structure |
-
2001
- 2001-10-30 CN CN 01252311 patent/CN2522623Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101607340B (en) * | 2008-06-19 | 2012-03-21 | 柳州市美通机械制造有限责任公司 | Automatic welding method and device for parts of outlet pipe of diesel engine |
| CN102588038A (en) * | 2012-02-22 | 2012-07-18 | 中国重汽集团济南动力有限公司 | Oil return pipe for supercharger |
| CN103016096A (en) * | 2012-12-26 | 2013-04-03 | 安徽江淮汽车股份有限公司 | Supercharger oil return tube with improved structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20021127 Termination date: 20101030 |