CN109027134B - Timing mark structure of engine gear train - Google Patents
Timing mark structure of engine gear train Download PDFInfo
- Publication number
- CN109027134B CN109027134B CN201811173896.8A CN201811173896A CN109027134B CN 109027134 B CN109027134 B CN 109027134B CN 201811173896 A CN201811173896 A CN 201811173896A CN 109027134 B CN109027134 B CN 109027134B
- Authority
- CN
- China
- Prior art keywords
- gear
- idle gear
- oil pump
- mark
- assembly
- 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.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
- F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H2057/0056—Mounting parts arranged in special position or by special sequence, e.g. for keeping particular parts in his position during assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02021—Gearboxes; Mounting gearing therein with means for adjusting alignment
Abstract
The invention discloses a timing marking structure of an engine gear train, wherein the engine gear train is a double-layer gear train structure and comprises a crankshaft gear, a middle idle gear component, an oil pump idle gear, an oil pump gear and an oil pump idle gear shaft, and the timing marking structure comprises: the first mark, the second mark, the third mark and the fourth mark, wherein the first mark is respectively arranged on the crankshaft gear and the large idle gear; the second marks are respectively arranged on the large idle gear and the small idle gear; the third mark is respectively arranged on the large idle gear and the oil pump idle gear shaft; the fourth mark is respectively arranged on the oil pump idler gear and the oil pump gear. The timing mark structure of the engine gear train can solve the problem that the timing mark of the inner gear is shielded to cause difficulty in assembly.
Description
Technical Field
The invention relates to the field of gear train structures, in particular to a timing mark structure of an engine gear train.
Background
The existing engine generally adopts gears or chains to drive a camshaft and an oil injection pump, in order to ensure the normal work of the engine, strict phase relations exist between a crankshaft of the engine and the camshaft and between the crankshaft and the oil injection pump, corresponding timing marks need to be made on the gears in design, and the gears correspond to one another according to the marks of the gears during assembly, so that the accurate phase is ensured.
With the increase of user demands, the accessories carried by the engine are more and more, the number of gears arranged on the engine for driving the accessories is synchronously increased, and a two-layer gear train is generally arranged for a medium-heavy engine, wherein a camshaft gear, an oil pump gear and a driving gear thereof are arranged on an inner layer, and a crankshaft gear, a large idler gear and the like are arranged on an outer layer. Because the engine needs accurate gas distribution time and oil injection time when working normally, and needs to guarantee the accurate phase relation between the camshaft and the crankshaft and between the oil pump and the crankshaft when assembling, corresponding marks must be made on parts such as the crankshaft gear, the middle large idle gear, the camshaft gear, the oil injection pump gear and the like in design.
However, due to the arrangement influence, the timing mark of the inner gear is often blocked by the outer gear, the observation space is very narrow, the assembly difficulty is high, and the efficiency is very low.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a timing mark structure of an engine gear train, which can solve the problem of difficult assembly caused by the fact that an inner gear timing mark is shielded.
In order to achieve the above object, the present invention provides a timing mark structure of an engine gear train, wherein the engine gear train is a double-layer gear train structure, and the timing mark structure comprises a crankshaft gear, an intermediate idle gear assembly, an oil pump idle gear, an oil pump gear and an oil pump idle gear shaft, wherein the intermediate idle gear assembly is a double-layer gear, a large idle gear and a small idle gear on the intermediate idle gear assembly are press-fitted together through interference fit, the large idle gear is meshed with the crankshaft gear at an outer layer, the small idle gear is meshed with the camshaft idle gear and the oil pump idle gear at an inner layer, and the timing mark structure comprises: first marks provided on the crank gear and the large idle gear, respectively, the first marks provided on the crank gear corresponding to (i.e., being aligned with) the first marks provided on the large idle gear at the time of assembly, thereby enabling accurate assembly between the crank gear and the large idle gear; second marks provided on the large idle gear and the small idle gear, respectively, the second marks provided on the large idle gear corresponding to (i.e., being aligned with) the second marks provided on the small idle gear at the time of assembly, thereby making the assembly between the large idle gear and the small idle gear accurate; third marks which are respectively provided on the large idle gear and the oil pump idle gear shaft, the third marks provided on the large idle gear corresponding to (i.e., being aligned with) the third marks provided on the oil pump idle gear shaft at the time of assembly, thereby enabling accurate assembly between the large idle gear and the oil pump idle gear shaft; and fourth marks respectively provided on the oil pump idle gear and the oil pump gear, the fourth marks provided on the oil pump idle gear corresponding to (i.e., being aligned with) the fourth marks provided on the oil pump gear and the third marks provided on the oil pump idle gear shaft at the time of assembly, thereby enabling accurate assembly between the oil pump idle gear and the oil pump idle gear shaft.
In a preferred embodiment, the third mark provided on the oil pump idle gear shaft is a reference mark point marked on an end surface of the oil pump idle gear shaft.
In a preferred embodiment, the fourth mark provided on the oil pump idle gear is aligned with the third mark provided on the oil pump idle gear shaft and the center of the idle gear shaft.
In a preferred embodiment, the second marking provided on the small idler gear is marked on a hub of the small idler gear.
In a preferred embodiment, the second mark provided on the large idle gear is a mark groove.
Compared with the prior art, the timing mark structure of the engine gear train has the following beneficial effects:
the timing mark structure of the engine gear train solves the problems that the gear marks are shielded, the number of teeth is large, and assembly is difficult, and particularly solves the problem that assembly is difficult due to the fact that the timing mark of an inner gear is shielded in double-layer gear arrangement.
Drawings
FIG. 1 is a conventional engine double gear train timing marker configuration.
FIG. 2 is a timing mark structure of an engine gear train according to an embodiment of the present invention.
Description of the main reference numerals:
1-crankshaft gear, 2-intermediate idle gear assembly, 21-small idle gear, 22-large idle gear, 3-oil pump idle gear, 4-oil pump gear, 5-oil pump idle gear shaft, P1-first marker, P2-second marker, P3-third marker, and P4-fourth marker.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, fig. 1 is a timing mark structure of a double-layer gear train of a traditional engine, wherein 1 is a crankshaft gear, 2 is an intermediate idle gear assembly, 3 is an oil pump idle gear, and 4 is an oil pump gear; the middle idle gear component 2 is a double-layer gear, a large idle gear and a small idle gear are arranged on the middle idle gear component by press fit, the large idle gear 22 is meshed with the crankshaft gear 1 on the outer layer, and the small idle gear 21 is meshed with the oil pump idle gear 3 and the camshaft idle gear on the inner layer.
In order to ensure the oil pump to inject oil at an accurate time, a strict phase requirement is required between the oil pump and the crankshaft, and the phase relation is ensured through a gear train, so that a corresponding timing mark point needs to be designed on the gear for guiding assembly. The specific arrangement is shown in fig. 1: the crankshaft gear 1 corresponds to a mark on the large idle gear 22, the small idle gear 21 corresponds to a mark on the oil pump idle gear 3, and the oil pump idle gear 3 corresponds to an oil pump gear mark 4.
The assembling process is as follows, the crankshaft gear 1 is firstly installed on the engine body along with the crankshaft, then the oil pump idle gear 3 is installed, the intermediate idle gear component 2 is installed, and finally the oil pump gear 4 is installed; as shown in figure 1, the large idler gear 22 of the middle idler gear component 2 completely shields two marked points on the small idler gear 21, and only can be observed from the side, the space of the side is small, so that the assembly can be completed only by two persons cooperating and repeatedly debugging during assembly, the assembly efficiency is extremely low, and errors are easy to occur.
As shown in fig. 2, a timing mark structure of an engine gear train according to a preferred embodiment of the present invention is a double-layer gear train structure, including a crankshaft gear 1, an intermediate idle gear assembly 2, an oil pump idle gear 3, an oil pump gear 4, and an oil pump idle gear shaft 5, wherein the intermediate idle gear assembly 2 is a double-layer gear, a large idle gear 22 and a small idle gear 21 on the intermediate idle gear assembly 2 are press-fitted together by interference fit, the large idle gear 22 is engaged with the crankshaft gear 1 at an outer layer, and the small idle gear 21 is engaged with the camshaft idle gear and the oil pump idle gear 3 at an inner layer, the timing mark structure includes: a first mark P1, a second mark P2, a third mark P3 and a fourth mark P4, wherein the first mark P1 is respectively provided on the crank gear 1 and the large idle gear 22, and at the time of assembly, the first mark P1 provided on the crank gear 1 corresponds to (i.e., aligns with) the first mark P1 provided on the large idle gear 22, thereby making the assembly between the crank gear 1 and the large idle gear 22 accurate; the second marks P2 are provided on the large idler gear 22 and the small idler gear 21, respectively, and the second mark P2 provided on the large idler gear 22 corresponds to (i.e., aligns with) the second mark P2 provided on the small idler gear 21 at the time of assembly, thereby making the assembly between the large idler gear 22 and the small idler gear 21 accurate; the third marks P3 are provided on the large idle gear 22 and the oil pump idle gear shaft 5, respectively, and the third mark P3 provided on the large idle gear 22 corresponds to (i.e., is aligned with) the third mark P3 provided on the oil pump idle gear shaft 5 at the time of assembly, thereby making the assembly between the large idle gear 22 and the oil pump idle gear shaft 5 accurate; the fourth marks P4 are provided on the oil pump idle gear 3 and the oil pump gear 4, respectively, and the fourth mark P4 provided on the oil pump idle gear 3 corresponds to (i.e., aligns with) the fourth mark P4 provided on the oil pump gear 4 and the third mark P3 provided on the oil pump idle gear shaft 5 at the time of assembly, thereby making the assembly between the oil pump idle gear 3 and the oil pump gear 4 and the oil pump idle gear shaft 5 accurate.
As a preferred embodiment, the third mark P3 provided on the oil pump idle gear shaft 5 is a reference mark point marked on an end surface of the oil pump idle gear shaft 5.
As a preferred embodiment, the fourth mark P4 provided on the oil pump idle gear 3 is in line with the third mark P3 provided on the oil pump idle gear shaft 5 and the center of the idle gear shaft 5.
As a preferred embodiment, the second mark P2 provided on the small idle gear 21 is marked on the hub of the small idle gear 21.
As a preferred embodiment, the second flag P2 provided on the large idle gear 22 is a flag groove.
The assembling process comprises the steps of firstly assembling the crankshaft gear 1, then assembling the oil pump idler gear 3 and the oil pump idler gear shaft 5, fixing the oil pump idler gear shaft 5 on a machine body through bolts, fixing the position of a mark P3 on the end face of the oil pump idler gear shaft 5, then rotating the oil pump idler gear 3 to a position that a mark P4 corresponds to a mark P3 on the oil pump idler gear shaft 5, ensuring that the centers of the P4 and the P3 and the oil pump idler gear shaft 5 are on the same line, finally assembling the intermediate idler gear assembly 2, and enabling the intermediate idler gear assembly 2 to correspond to the mark P1 of the crankshaft gear 1 and the mark P3 of the oil pump idler gear shaft 5 according to the marks P1 and P3.
In conclusion, the invention provides a timing mark structure of an engine gear train, and solves the problem that the timing mark of an inner gear is shielded to cause difficulty in assembly.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (5)
1. A timing mark structure of an engine gear train, wherein the engine gear train is a double-layer gear train structure and comprises a crankshaft gear, an intermediate idle gear assembly, an oil pump idle gear, an oil pump gear and an oil pump idle gear shaft, wherein the intermediate idle gear assembly is a double-layer gear, a large idle gear and a small idle gear on the intermediate idle gear assembly are pressed and assembled together through interference fit, the large idle gear is meshed with the crankshaft gear at the outer layer, and the small idle gear is meshed with the oil pump idle gear at the inner layer, and the timing mark structure comprises:
first marks provided on the crank gear and the large idle gear, respectively, the first marks provided on the crank gear corresponding to the first marks provided on the large idle gear at the time of assembly;
second marks provided on the large idle gear and the small idle gear, respectively, the second marks provided on the large idle gear corresponding to the second marks provided on the small idle gear at the time of assembly;
third marks which are respectively provided on the large idle gear and the oil pump idle gear shaft, the third marks provided on the large idle gear corresponding to the third marks provided on the oil pump idle gear shaft at the time of assembly; and
and fourth marks respectively provided on the oil pump idle gear and the oil pump gear, wherein the fourth marks provided on the oil pump idle gear correspond to the fourth marks provided on the oil pump gear and the third marks provided on the oil pump idle gear shaft during assembly.
2. The timing mark structure of an engine gear train according to claim 1, wherein said third mark provided on said oil pump idle gear shaft is a reference mark point marked on an end face of said oil pump idle gear shaft.
3. The timing mark structure of an engine gear train according to claim 1, wherein said fourth mark provided on said oil pump idle gear is in line with a third mark provided on said oil pump idle gear shaft and a center of said idle gear shaft.
4. The timing mark structure of an engine gear train according to claim 1, wherein said second mark provided on said small idle gear is marked on a hub of said small idle gear.
5. The timing mark structure of an engine gear train according to claim 1, wherein said second mark provided on said large idle gear is a mark groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811173896.8A CN109027134B (en) | 2018-10-09 | 2018-10-09 | Timing mark structure of engine gear train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811173896.8A CN109027134B (en) | 2018-10-09 | 2018-10-09 | Timing mark structure of engine gear train |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109027134A CN109027134A (en) | 2018-12-18 |
| CN109027134B true CN109027134B (en) | 2022-03-04 |
Family
ID=64615987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811173896.8A Active CN109027134B (en) | 2018-10-09 | 2018-10-09 | Timing mark structure of engine gear train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109027134B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577866A (en) * | 2020-06-22 | 2020-08-25 | 安徽华菱汽车有限公司 | Engine duplicate gear |
| CN113389638B (en) * | 2021-07-30 | 2024-03-12 | 广西玉柴机器股份有限公司 | Method capable of reducing gear noise and engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0887529A2 (en) * | 1997-06-26 | 1998-12-30 | Mitsubishi Heavy Industries, Co., Ltd. | Air-cooled engine for general use |
| CN102720585A (en) * | 2011-11-17 | 2012-10-10 | 东风朝阳柴油机有限责任公司 | Timing gear chamber wheel train of engine |
| CN204900746U (en) * | 2015-09-09 | 2015-12-23 | 广西玉柴机器股份有限公司 | Crankshaft timing gear |
| CN106593562A (en) * | 2016-11-29 | 2017-04-26 | 东风朝阳朝柴动力有限公司 | Timing gear system structure for driving oil pump and compression pump |
| CN206280118U (en) * | 2016-11-29 | 2017-06-27 | 东风朝阳朝柴动力有限公司 | Drive the timing gear train of oil pump and compression pump |
| CN208900644U (en) * | 2018-10-09 | 2019-05-24 | 广西玉柴机器股份有限公司 | The timing marks structure of engine gear system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201292885Y (en) * | 2008-09-03 | 2009-08-19 | 无锡开普机械有限公司 | Gearing unit of engine |
| CN203756330U (en) * | 2014-03-14 | 2014-08-06 | 常州常发动力机械有限公司 | Engine gear train structure |
-
2018
- 2018-10-09 CN CN201811173896.8A patent/CN109027134B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0887529A2 (en) * | 1997-06-26 | 1998-12-30 | Mitsubishi Heavy Industries, Co., Ltd. | Air-cooled engine for general use |
| CN102720585A (en) * | 2011-11-17 | 2012-10-10 | 东风朝阳柴油机有限责任公司 | Timing gear chamber wheel train of engine |
| CN204900746U (en) * | 2015-09-09 | 2015-12-23 | 广西玉柴机器股份有限公司 | Crankshaft timing gear |
| CN106593562A (en) * | 2016-11-29 | 2017-04-26 | 东风朝阳朝柴动力有限公司 | Timing gear system structure for driving oil pump and compression pump |
| CN206280118U (en) * | 2016-11-29 | 2017-06-27 | 东风朝阳朝柴动力有限公司 | Drive the timing gear train of oil pump and compression pump |
| CN208900644U (en) * | 2018-10-09 | 2019-05-24 | 广西玉柴机器股份有限公司 | The timing marks structure of engine gear system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109027134A (en) | 2018-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109027134B (en) | Timing mark structure of engine gear train | |
| DE102012109689A1 (en) | Valve train arrangement for actuating gas exchange valves of an internal combustion engine | |
| DE102014201789A1 (en) | Drive system of a high pressure fuel pump, fuel high pressure pump assembly and internal combustion engine | |
| DE102013205129A1 (en) | Bearing frame or cylinder head cover of an internal combustion engine | |
| DE102010054405A1 (en) | Arrangement for transferring driving power from e.g. camshaft to piston double stroke high pressure fuel pump of diesel engine, has gear train comprising non-circular wheel, where fuel pump drives torque fluctuations to camshaft | |
| CN204267670U (en) | A kind of bevel gear | |
| CN208900644U (en) | The timing marks structure of engine gear system | |
| CN104948721A (en) | Planet wheel bearing lubrication structure of planetary reducer | |
| CN204900746U (en) | Crankshaft timing gear | |
| DE102013216184A1 (en) | Phaser | |
| CN103398086A (en) | Front structure of engine crankshaft | |
| CN203347871U (en) | Oil-control device for fully variable hydraulic valve system of internal combustion engine | |
| CN208870662U (en) | Simple gear transmitting is to timing mechanism | |
| CN212616179U (en) | Engine duplicate gear | |
| CN109236954B (en) | Idler gear component of engine | |
| CN208719297U (en) | A kind of gear structure | |
| CN109654202B (en) | PTO gear engagement structure | |
| DE102011007379A1 (en) | shaft connection | |
| CN201786411U (en) | Timing transmission chain lubricating structure | |
| CN105545963A (en) | Grease adding head for needle bearing | |
| CN213331212U (en) | Oil pump of integrated timing chain fuel sprayer | |
| CN204572297U (en) | Centralized gear transmission of diesel engine system | |
| CN203374361U (en) | Combined mechanism of gear train of diesel engine | |
| CN208280999U (en) | The balance shaft timing drive mechanism of three-cylinder engine | |
| CN205190677U (en) | Zero back clearance low noise drive gear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |