CN201661322U - Positioning and fixing device for guaranteeing gear clearance of overhead camshaft of motor - Google Patents
Positioning and fixing device for guaranteeing gear clearance of overhead camshaft of motor Download PDFInfo
- Publication number
- CN201661322U CN201661322U CN2010201774774U CN201020177477U CN201661322U CN 201661322 U CN201661322 U CN 201661322U CN 2010201774774 U CN2010201774774 U CN 2010201774774U CN 201020177477 U CN201020177477 U CN 201020177477U CN 201661322 U CN201661322 U CN 201661322U
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- CN
- China
- Prior art keywords
- gear
- camshaft
- positioning
- connecting plate
- idle
- 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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Abstract
The utility model discloses a positioning and fixing device for guaranteeing the clearance of an overhead camshaft of a motor. The device comprises a driving gear, an idle gear and a camshaft gear that are meshed sequentially, wherein the driving gear and a driving gear shaft are in clearance fit; the idle gear and an idle gear shaft are in clearance fit; and the camshaft gear and a camshaft are fixedly connected. The device further comprises a connecting plate connected with the driving gear shaft, the idle gear shaft and the camshaft gear in a positioning manner. The device not only improves the positioning precision of the idle gear driving the camshaft gear and guarantees gear clearance, but also reduces motor noise and further improves the reliability of the motor, thereby facilitating the future maintenance, disassembly and assembly of the motor.
Description
Technical field
The utility model relates to a kind of positioning device, particularly a kind of device for positioning and securing that guarantees commercial vehicle engine overhead camshaft gear clearance.
Background technique
At present, adopt the commercial vehicle engine camshaft of overhead camshaft to adopt gear drive more, camshaft and idle gear are installed on the cylinder head, actuation gear is installed on the gear chamber (or cylinder block), owing between the cylinder block and head cylinder head gasket is housed also, and the compressed thickness scope of cylinder head gasket is excessive, cylinder liner protrusion amount neither a determined value, all of these factors taken together causes the gear clearance between camshaft gear wheel, idle gear, the actuation gear three effectively not guaranteed, thereby influences the reliability of engine noise and gear.
The model utility content
The utility model is in order to overcome defective in the above-mentioned prior art, and the setting by connecting plate provides a kind of device for positioning and securing that can guarantee motor overhead camshaft gear clearance.
The device for positioning and securing of assurance motor overhead camshaft gear clearance of the present utility model comprises actuation gear, idle gear and camshaft gear wheel that order meshes; Actuation gear and gear shaft are Spielpassung, and idle gear and idle gear axle are Spielpassung, and camshaft gear wheel and camshaft are for fixedlying connected; Also comprise connecting plate, connecting plate is located by connecting with gear shaft, idle gear axle and camshaft gear wheel respectively.
Preferably, connecting plate comprises first connecting plate and second connecting plate, and the two ends of two connecting plates are equipped with positioning hole; Be respectively equipped with positioning boss on gear shaft, idle gear axle and the camshaft gear wheel; First connecting plate and second connecting plate respectively therein place, end stack, stack two corresponding positioning holes alignment at position and all with the idle gear axle on the boss Spielpassung; The positioning hole of the first connecting plate the other end and the boss Spielpassung on the camshaft gear wheel; The positioning hole of the second connecting plate the other end and the boss Spielpassung on the gear shaft.
Preferably, the boss on camshaft gear wheel, idle gear axle and the gear shaft is concentricity with corresponding axle respectively.
Preferably, boss on camshaft gear wheel, idle gear axle and the gear shaft and the monolateral gap between the corresponding positioning hole are 0-0.02mm.
Preferably, camshaft gear wheel is by the coaxial rear end that is fixedly installed in camshaft of bolt.
Preferably, idle gear is coaxial to be enclosed within on the idle gear axle, and idle gear axle, first connecting plate and second connecting plate cover in cylinder by bolt; Actuation gear is coaxial to be set on the gear shaft, gear shaft by bolt on gear chamber or cylinder block.
Compared with prior art, the utlity model has following beneficial effect:
1. the camshaft gear wheel gap is by two independent connecting plate positioning and fixing, the location accurately, avoided because thereby cylinder block, cylinder head and cylinder head gasket machining accuracy can not guarantee to influence the drawback of gear clearance, guaranteed gear clearance, reduce engine noise, improved engine reliability.
2. component are installed simply, have reduced the motor cost, and engine arrangement is compact more, keeps in repair convenient.
Description of drawings
Fig. 1 is the mounting plane figure that the utility model guarantees the device for positioning and securing of motor overhead camshaft gear clearance;
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Mark the following drawings mark thereon in conjunction with the accompanying drawings:
The 1-cylinder head, 2-camshaft gear wheel, the construction bolt on the 3-camshaft, construction bolt on the 3A-idle gear axle, the construction bolt on the 3B-gear shaft, 4-first connecting plate, the 5-idle gear, 6-gear chamber, 7-second connecting plate, the 8-actuation gear, 9-camshaft, 10-idle gear axle, the 11-gear shaft, 12-camshaft gear wheel positioning boss, 13-idle gear axle positioning boss, 14-gear shaft positioning boss.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subjected to the restriction of embodiment.
To shown in Figure 2, the device for positioning and securing of assurance motor overhead camshaft gear clearance of the present utility model comprises as Fig. 1: be installed in actuation gear 8 on the gear chamber 6 (or cylinder block), be installed in idle gear 5 on the cylinder head 1, be installed in the camshaft 9 on the cylinder head 1, the camshaft gear wheel 2 that is installed in camshaft one end, first connecting plate 4, second connecting plate 7, idle gear axle 10, respective bolt etc.Actuation gear 8, idle gear 5 and camshaft gear wheel 2 orders that are installed on the camshaft 9 mesh.First connecting plate 4 cooperates with camshaft gear wheel positioning boss 12 and idle gear axle positioning boss 13 respectively by the positioning hole that two ends accurately process, second connecting plate 7 cooperates with idle gear axle positioning boss 13 and gear shaft positioning boss 14 respectively by the positioning hole that two ends accurately process, by bolt first connecting plate and second connecting plate, thereby reach accurate location idle gear, guaranteed the camshaft gear wheel gap.
Below scheme is described in detail:
As depicted in figs. 1 and 2, camshaft 9 is fixed on the cylinder head 1 by other correlated parts, camshaft gear wheel 2 is by 3 coaxial camshaft 9 rear ends (being the right side among Fig. 2) that are fixed on of the construction bolt on the camshaft, idle gear 5 is coaxial to be set in that (both are Spielpassung on the idle gear axle 10, can rotate relatively), idle gear 5 meshes with camshaft gear wheel 2 and actuation gear 8 respectively.Actuation gear 8 is coaxial to be set in (both are Spielpassung, can rotate relatively) on the gear shaft 11, and gear shaft 11 is fixed on the gear chamber 6 (or cylinder block) by the construction bolt 3B on the gear shaft.Be processed with two positioning holes respectively on first connecting plate 4 and second connecting plate 7, be each positioned at the two ends of two connecting plates, in addition, be equipped with the excessively nail hole (be used for two connecting plates be fixed on idle gear axle) corresponding with idle gear axle bolt hole on two connecting plates, the diameter and the centre distance of all positioning holes guarantee by precision machining.The camshaft gear wheel positioning boss 12 of camshaft gear wheel rear end, idle gear axle positioning boss 13 and gear shaft positioning boss 14 all guarantee diameter and and Gear center (or gear shaft center) centering by precision machining.
During as installed, the camshaft gear wheel 2 of camshaft 9 and camshaft rear end is fixed on the cylinder head 1 by correlated parts, actuation gear 8 and gear shaft 11 are fixed on the gear chamber 6 (or cylinder block) by the construction bolt 3B on the gear shaft, two ends of first connecting plate 4 and second connecting plate 7 stack, and two positioning hole corresponding that set up separately on it are alignd, promptly two of first connecting plate 4 positioning holes are enclosed within respectively on camshaft gear wheel positioning boss 12 and the idle gear axle positioning boss 13, thereby guaranteed the gear clearance of camshaft gear wheel 2 and idle gear 5, two positioning holes of second connecting plate 7 are enclosed within respectively on idle gear axle positioning boss 13 and the gear shaft positioning boss 14, thereby have guaranteed the gear clearance of idle gear 5 and actuation gear 8.The monolateral gap of positioning hole and corresponding boss is 0 to 0.02mm.By the construction bolt 3A on the idle gear axle idle gear axle 10, first connecting plate 4 and second connecting plate 7 are fixed on the cylinder head 1, can guarantee the gap between each mate gear.
In addition, as a kind of improvement of the present utility model, above-mentioned positioning boss on gear and each gear shaft can adopt positioning hole to replace, correspondingly, cooperate the location by on connecting plate, increasing positioning boss, perhaps adopt special-purpose locating stud to insert in gear, gear shaft and each the connecting plate positioning hole and cooperate the location.
As another kind of improvement the of the present utility model, two positioning plates can adopt an independent positioning plate to replace, and get final product by accurately process 3 positioning holes according to the centre distance of two groups of gears on positioning plate.
The utility model guarantees the device for positioning and securing of motor overhead camshaft gear clearance, by adopting first connecting plate and the second connecting plate positioning and fixing associated gear, not only improved the driving cam shaftgear the idle gear Location accuracy, guaranteed gear clearance, reduced engine noise, and the reliability of motor also further improves, and is convenient to motor maintenance and dismounting from now on.
More than disclosed only be several specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection domain of the present utility model.
Claims (7)
1. a device for positioning and securing that guarantees motor overhead camshaft gear clearance is characterized in that, comprises actuation gear, idle gear and the camshaft gear wheel of order engagement; Actuation gear and gear shaft are Spielpassung, and idle gear and idle gear axle are Spielpassung, and camshaft gear wheel and camshaft are for fixedlying connected; Also comprise connecting plate, described connecting plate is located by connecting with gear shaft, idle gear axle and camshaft gear wheel respectively.
2. the device for positioning and securing of assurance motor overhead camshaft gear clearance according to claim 1 is characterized in that described connecting plate comprises first connecting plate and second connecting plate, and the two ends of two connecting plates are equipped with positioning hole; Be respectively equipped with positioning boss on gear shaft, idle gear axle and the camshaft gear wheel; Described first connecting plate and second connecting plate respectively therein place, end stack, stack two corresponding positioning holes alignment at position and all with the idle gear axle on the boss Spielpassung; The positioning hole of the first connecting plate the other end and the boss Spielpassung on the camshaft gear wheel; The positioning hole of the second connecting plate the other end and the boss Spielpassung on the gear shaft.
3. the device for positioning and securing of assurance motor overhead camshaft gear clearance according to claim 2 is characterized in that, the boss on described camshaft gear wheel, idle gear axle and the gear shaft is concentricity with corresponding axle respectively.
4. according to the device for positioning and securing of claim 2 or 3 described assurance motor overhead camshaft gear clearances, it is characterized in that boss and the monolateral gap between the corresponding positioning hole on described camshaft gear wheel, idle gear axle and the gear shaft are 0-0.02mm.
5. according to the device for positioning and securing of any described assurance motor overhead camshaft gear clearance in the claim 1 to 3, it is characterized in that described camshaft gear wheel is by the coaxial rear end that is fixedly installed in camshaft of bolt.
6. according to the device for positioning and securing of claim 2 or 3 described assurance motor overhead camshaft gear clearances, it is characterized in that, described idle gear is coaxial to be enclosed within on the idle gear axle, and idle gear axle, first connecting plate and second connecting plate cover in cylinder by bolt.
7. according to the device for positioning and securing of any described assurance motor overhead camshaft gear clearance in the claim 1 to 3, it is characterized in that, described actuation gear is coaxial to be set on the gear shaft, gear shaft by bolt on gear chamber or cylinder block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201774774U CN201661322U (en) | 2010-04-29 | 2010-04-29 | Positioning and fixing device for guaranteeing gear clearance of overhead camshaft of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201774774U CN201661322U (en) | 2010-04-29 | 2010-04-29 | Positioning and fixing device for guaranteeing gear clearance of overhead camshaft of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661322U true CN201661322U (en) | 2010-12-01 |
Family
ID=43231737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201774774U Expired - Fee Related CN201661322U (en) | 2010-04-29 | 2010-04-29 | Positioning and fixing device for guaranteeing gear clearance of overhead camshaft of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661322U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235190A (en) * | 2010-04-29 | 2011-11-09 | 广西玉柴机器股份有限公司 | Positioning and fixing device capable of ensuring clearance of overhead camshaft gear of engine |
| WO2013020480A1 (en) * | 2011-08-05 | 2013-02-14 | 无锡开普动力有限公司 | Engine camshaft thrusting structure |
-
2010
- 2010-04-29 CN CN2010201774774U patent/CN201661322U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235190A (en) * | 2010-04-29 | 2011-11-09 | 广西玉柴机器股份有限公司 | Positioning and fixing device capable of ensuring clearance of overhead camshaft gear of engine |
| WO2013020480A1 (en) * | 2011-08-05 | 2013-02-14 | 无锡开普动力有限公司 | Engine camshaft thrusting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20150429 |
|
| EXPY | Termination of patent right or utility model |