CN102235190A - Positioning and fixing device capable of ensuring clearance of overhead camshaft gear of engine - Google Patents
Positioning and fixing device capable of ensuring clearance of overhead camshaft gear of engine Download PDFInfo
- Publication number
- CN102235190A CN102235190A CN2010101614163A CN201010161416A CN102235190A CN 102235190 A CN102235190 A CN 102235190A CN 2010101614163 A CN2010101614163 A CN 2010101614163A CN 201010161416 A CN201010161416 A CN 201010161416A CN 102235190 A CN102235190 A CN 102235190A
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- gear
- camshaft
- positioning
- connecting plate
- idle
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Abstract
The invention discloses a positioning and fixing device capable of ensuring the clearance of an overhead camshaft gear of an engine. The device comprises a driving gear, an idle gear and a camshaft gear which are sequentially engaged with one another, and a connecting plate, wherein the driving gear is in clearance fit with a driving gear shaft; the idle gear is in clearance fit with an idle gear shaft; the camshaft gear is fixedly connected with a camshaft; and the connecting plate is connected with the driving gear shaft, the idle gear shaft and the camshaft gear respectively in a positioning way. The device improves the positioning accuracy of the idle gear for driving the camshaft gear, ensures the clearance among the gears, reduces the noise of the engine, further improves the reliability of the engine and makes future maintenance, disassembly and assembly of the engine convenient.
Description
Technical field
The present invention 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.
Summary of the invention
The present invention 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 invention 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 present invention 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 present invention 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, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention 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 invention 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 invention, 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 invention, 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 present invention 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 invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
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 |
|---|---|---|---|
| CN2010101614163A CN102235190A (en) | 2010-04-29 | 2010-04-29 | Positioning and fixing device capable of ensuring clearance of overhead camshaft gear of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101614163A CN102235190A (en) | 2010-04-29 | 2010-04-29 | Positioning and fixing device capable of ensuring clearance of overhead camshaft gear of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102235190A true CN102235190A (en) | 2011-11-09 |
Family
ID=44886242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101614163A Pending CN102235190A (en) | 2010-04-29 | 2010-04-29 | Positioning and fixing device capable of ensuring clearance of overhead camshaft gear of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102235190A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870714A (en) * | 2017-02-27 | 2017-06-20 | 东风商用车有限公司 | Dual Over Head Camshaft diesel engine backlash adjusts instrument and method |
| CN113685285A (en) * | 2021-08-26 | 2021-11-23 | 中原内配集团安徽有限责任公司 | Cast-in cylinder sleeve with middle milled hole |
| CN113775413A (en) * | 2021-09-29 | 2021-12-10 | 广西玉柴机器股份有限公司 | Gear meshing clearance adjusting structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT1616U1 (en) * | 1995-08-31 | 1997-08-25 | Avl Verbrennungskraft Messtech | INTERNAL COMBUSTION ENGINE WITH CAMSHAFT DRIVED BY GEAR WHEELS |
| CN200985811Y (en) * | 2006-12-22 | 2007-12-05 | 洛阳北方企业集团有限公司 | Device for regulating correct time of engines cam axle distribution |
| CN101196128A (en) * | 2006-12-06 | 2008-06-11 | 奇瑞汽车有限公司 | Secondary assembling and locating method, and set bolt |
| CN101349173A (en) * | 2008-09-03 | 2009-01-21 | 无锡开普机械有限公司 | Apparatus for adjusting gear backlash of engine |
| CN201321878Y (en) * | 2008-11-12 | 2009-10-07 | 广西玉柴机器股份有限公司 | Overhead camshaft driving system of motor |
| CN201661322U (en) * | 2010-04-29 | 2010-12-01 | 广西玉柴机器股份有限公司 | Positioning and fixing device for guaranteeing gear clearance of overhead camshaft of motor |
-
2010
- 2010-04-29 CN CN2010101614163A patent/CN102235190A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT1616U1 (en) * | 1995-08-31 | 1997-08-25 | Avl Verbrennungskraft Messtech | INTERNAL COMBUSTION ENGINE WITH CAMSHAFT DRIVED BY GEAR WHEELS |
| CN101196128A (en) * | 2006-12-06 | 2008-06-11 | 奇瑞汽车有限公司 | Secondary assembling and locating method, and set bolt |
| CN200985811Y (en) * | 2006-12-22 | 2007-12-05 | 洛阳北方企业集团有限公司 | Device for regulating correct time of engines cam axle distribution |
| CN101349173A (en) * | 2008-09-03 | 2009-01-21 | 无锡开普机械有限公司 | Apparatus for adjusting gear backlash of engine |
| CN201321878Y (en) * | 2008-11-12 | 2009-10-07 | 广西玉柴机器股份有限公司 | Overhead camshaft driving system of motor |
| CN201661322U (en) * | 2010-04-29 | 2010-12-01 | 广西玉柴机器股份有限公司 | Positioning and fixing device for guaranteeing gear clearance of overhead camshaft of motor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870714A (en) * | 2017-02-27 | 2017-06-20 | 东风商用车有限公司 | Dual Over Head Camshaft diesel engine backlash adjusts instrument and method |
| CN113685285A (en) * | 2021-08-26 | 2021-11-23 | 中原内配集团安徽有限责任公司 | Cast-in cylinder sleeve with middle milled hole |
| CN113775413A (en) * | 2021-09-29 | 2021-12-10 | 广西玉柴机器股份有限公司 | Gear meshing clearance adjusting structure |
| CN113775413B (en) * | 2021-09-29 | 2022-06-14 | 广西玉柴机器股份有限公司 | Gear meshing clearance adjusting structure |
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Application publication date: 20111109 |