CN212716899U - Engine wheel train and engine - Google Patents
Engine wheel train and engine Download PDFInfo
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- CN212716899U CN212716899U CN202021779957.8U CN202021779957U CN212716899U CN 212716899 U CN212716899 U CN 212716899U CN 202021779957 U CN202021779957 U CN 202021779957U CN 212716899 U CN212716899 U CN 212716899U
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Abstract
The application provides an engine wheel train and an engine. The engine train includes: a crankshaft gear for connection with a crankshaft of an engine; and a crankshaft idle gear engaged with the crankshaft gear to rotate by the driving of the crankshaft gear; the crankshaft idle wheel is also respectively meshed with the crankshaft accessory wheel set and the transmission idle wheel set so as to drive the crankshaft accessory wheel set and the transmission idle wheel set to rotate; the transmission idler pulley set comprises a power take-off shaft idler pulley, and the power take-off shaft idler pulley is meshed with a power take-off shaft gear so as to drive a power take-off shaft connected with the power take-off shaft gear to move. The engine gear train can assist the engine crankshaft to drive the air compressor, the high-pressure oil pump and the timing air distribution system and simultaneously directly provide driving force for the hydraulic system so as to simplify the power transmission structure of the engine and reduce the size of the engine, thereby being beneficial to the maintenance of the engine and reducing the volume of the engine.
Description
Technical Field
The utility model relates to the technical field of engines, especially, relate to an engine train and engine.
Background
The engine crankshaft of the heavy-duty special truck simultaneously drives an air compressor, a high-pressure oil pump and a timing air distribution system by using an engine gear train, wherein the air compressor needs sufficient driving force to ensure that each air system of the whole truck obtains enough air source, the high-pressure oil pump uses the driving force to ensure that an oil supply system stably works, and the timing air distribution system realizes the timing opening and closing of an air inlet valve and an air outlet valve of each cylinder under the action of the driving force.
More and more vehicle models currently require an engine crankshaft to simultaneously provide driving force for a hydraulic system of a whole vehicle. In the prior art, the supply of the driving force of the hydraulic system is realized by installing an additional power take-off shaft connected with the hydraulic system on a gearbox module.
However, the power take-off shaft of the driving hydraulic system is arranged on the gearbox module, so that the power transmission structure of the engine is too complex and too large in size, the maintenance of the engine is not facilitated, and the reduction of the volume of the engine is also not facilitated.
SUMMERY OF THE UTILITY MODEL
To solve the problems in the prior art, the application provides an engine wheel train and an engine. The engine gear train can assist the engine crankshaft to drive the air compressor, the high-pressure oil pump and the timing air distribution system and simultaneously directly provide driving force for the hydraulic system so as to simplify the power transmission structure of the engine and reduce the size of the engine, thereby being beneficial to the maintenance of the engine and reducing the volume of the engine.
In a first aspect, the present invention provides an engine wheel system, comprising: a crankshaft gear for connection with a crankshaft of an engine; and a crankshaft idle gear engaged with the crankshaft gear to be rotated by the driving of the crankshaft gear; the crankshaft idle wheel is also respectively meshed with the crankshaft accessory wheel set and the transmission idle wheel set so as to drive the crankshaft accessory wheel set and the transmission idle wheel set to rotate; the transmission idler pulley set comprises a force taking shaft idler pulley, and the force taking shaft idler pulley is meshed with a force taking shaft gear so as to drive a force taking shaft connected with the force taking shaft gear to move. The engine wheel train can directly provide driving force for the hydraulic system so as to simplify the power transmission structure of the engine and reduce the size of the engine, thereby being beneficial to the maintenance of the engine and reducing the volume of the engine.
In one embodiment of the first aspect, the crankshaft accessory wheel set includes at least one crankshaft accessory wheel that is engaged with and rotated by the crankshaft idler wheel to drive a crankshaft accessory wheel shaft connected thereto. Through the implementation mode, the normal operation of the whole vehicle is facilitated.
In one embodiment of the first aspect, the crankshaft accessory wheel set includes a high pressure oil pump gear for driving a high pressure oil pump and an air compressor gear for driving an air compressor. Through this embodiment, the engine train can drive high-pressure oil pump and air compressor, is favorable to the normal operating of whole car.
In one embodiment of the first aspect, the idler drive set further comprises an idler camshaft gear, and the idler camshaft gear is engaged with a camshaft gear to drive a camshaft coupled to the camshaft gear to provide a driving force for a timing valve train. Through the embodiment, the engine wheel train can drive the gas distribution system, and normal operation of the whole vehicle is facilitated.
In one embodiment of the first aspect, the crankshaft idle gear, the power take-off shaft idle gear, and the camshaft idle gear are each coupled with their fixed shafts by a sliding bearing. Through this embodiment, because the slide bearing has advantages such as high transmission efficiency, lubricated condition is good, the noise is little, installs the slide bearing between idler and the idler axle, is favorable to improving the transmission efficiency, reliability and the precision of engine train and can reduce the noise that produces when it uses.
In one embodiment of the first aspect, the crankshaft gear, the high-pressure oil pump gear, the air compressor gear, the camshaft gear, and the power take-off shaft gear are each integrally formed with a shaft thereof. By this embodiment, it is advantageous to improve the stability of the engine train, thereby providing a stable and reliable power output for each accessory module.
In one embodiment of the first aspect, the crankshaft idle gear is meshed with the crankshaft gear, the high-pressure oil pump gear, the air compressor gear, the camshaft idle gear, and the power take-off shaft idle gear in this order in a clockwise direction along an outer periphery thereof. Through the embodiment, the engine wheel train is matched with the layout of the engine shell and each accessory module of the engine, so that the limited space is fully utilized, the structure of the engine wheel train is more compact, and the size of the engine is reduced.
In one embodiment of the first aspect, weight-reducing holes are evenly distributed on the crankshaft idler gear and the camshaft gear. Through this embodiment, can alleviate the dead weight of engine train to be favorable to reducing the noise that produces and improve the transmission efficiency of engine train when engine operation.
In one embodiment of the first aspect, each gear of the engine train is made of steel. Through the embodiment, each gear made of steel has long service life and high reliability, thereby being beneficial to improving the stability of the engine gear train.
In a second aspect, the present invention also provides an engine comprising the engine train of the first aspect and any of its embodiments. By utilizing the engine, the engine wheel train can assist the engine crankshaft to drive the air compressor, the high-pressure oil pump and the timing air distribution system and simultaneously directly provide driving force for the hydraulic system so as to simplify the power transmission structure of the engine and reduce the size of the engine, thereby being beneficial to the maintenance of the engine and reducing the volume of the engine.
The application provides an engine train and engine compares in prior art, has following beneficial effect.
1. The engine wheel train can assist the engine crankshaft to drive the air compressor, the high-pressure oil pump and the timing air distribution system, and meanwhile, the driving force is directly provided for the hydraulic system, so that the power transmission structure of the engine is simplified, the size of the engine is reduced, the maintenance of the engine is facilitated, and the size of the engine is reduced.
2. The sliding bearing is installed between the idle wheel and the idle wheel shaft, which is beneficial to improving the transmission efficiency, reliability and precision of the engine gear train and reducing the noise generated when the engine gear train is used.
3. The crankshaft gear and the accessory wheel are respectively integrally formed with the shaft, so that the stability of the engine wheel train is improved.
The above-mentioned technical characteristics can be combined in various suitable ways or replaced by equivalent technical characteristics as long as the purpose of the invention can be achieved.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings, in which:
fig. 1 shows a schematic structural diagram of an engine train according to an embodiment of the present invention.
List of reference numerals:
1-a camshaft gear; 2-high pressure oil pump gear; 3-a crankshaft gear; 4-air compressor gear; 5-crankshaft idler pulley; 6-camshaft idler; 7-power take-off shaft idle wheel; 8-power take-off shaft gear; 9-lightening holes; 10-engine housing.
In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, the present embodiment provides an engine train including: a crank gear 3 for connection with a crankshaft of the engine; and a crankshaft idle gear 5 engaged with the crankshaft gear 3 to rotate by the driving of the crankshaft gear 3; the crankshaft idle wheel 5 is also respectively meshed with the crankshaft accessory wheel set and the transmission idle wheel set so as to drive the crankshaft accessory wheel set and the transmission idle wheel set to rotate; wherein, the transmission idler group includes power take-off shaft idler 7, and power take-off shaft idler 7 meshes with power take-off shaft gear 8 to the power take-off shaft motion of driving and being connected with power take-off shaft gear 8.
The crank gear 3 connected to the crankshaft of the engine is the drive wheel of the engine train. The crankshaft gear 3 drives other gears in the engine gear train to rotate through a crankshaft idle gear 5 meshed with the crankshaft gear so as to drive each accessory module, and therefore the whole vehicle can stably run.
The crankshaft gear 3 drives other gears in the engine gear train to rotate through a crankshaft idle gear 5 meshed with the crankshaft gear, wherein the other gears comprise three types; the first is a crankshaft accessory wheel; the second type is a transmission idle wheel; the third type is a drive attachment wheel. The first and third gear types are collectively referred to as the accessory wheel.
The crankshaft accessory wheel is directly meshed with the crankshaft idle wheel 5 and is driven by the crankshaft idle wheel 5 to rotate so as to drive a shaft connected with the crankshaft idle wheel to move, and the moving shaft provides driving force for an accessory module connected with the shaft. The drive idler wheel is also directly engaged with the crankshaft idler wheel 5 and is driven to rotate by the crankshaft idler wheel 5, but rather than directly providing a driving force to the accessory module, the drive idler wheel drives a drive accessory wheel engaged with the drive idler wheel to rotate so that the drive accessory wheel drives a shaft mounted thereon to move, the moving shaft providing a driving force to the accessory module connected thereto.
More and more vehicle models currently require an engine crankshaft to simultaneously provide driving force for a hydraulic system of a whole vehicle. In the prior art, the additional power take-off shaft connected with the hydraulic system is arranged on the gearbox module to supply the driving force of the hydraulic system, so that the power transmission structure of the engine is too complex, the size is too large, the maintenance of the engine is not facilitated, and the reduction of the size of the engine is also not facilitated.
In the embodiment, the hydraulic system can also be driven by the engine gear train, so that an additional power take-off shaft connected with the hydraulic system is avoided being installed on the gearbox module, the power transmission structure of the engine is simplified, the size of the power take-off shaft is reduced, the maintenance of the engine is facilitated, and the size of the engine is reduced.
In order to realize that the engine wheel train directly drives the hydraulic system, the engine wheel train needs to comprise a power take-off shaft idle wheel 7 and a power take-off shaft gear 8, wherein the power take-off shaft idle wheel 7 is a transmission idle wheel, and the power take-off shaft gear 8 is a transmission accessory wheel. The crankshaft idle wheel 5 drives the power take-off shaft idle wheel 7 meshed with the crankshaft idle wheel to rotate, the power take-off shaft idle wheel 7 drives the power take-off shaft gear 8 meshed with the power take-off shaft idle wheel 7 to rotate, and the rotating power take-off shaft gear 8 drives the power take-off shaft connected with the power take-off shaft gear 8 to move so as to drive the hydraulic system.
Alternatively, the power take-off shaft can also provide the power take-off shaft of other accessory modules for providing driving force for other accessory modules according to the requirements of the whole vehicle, namely the power take-off shaft is not limited to be the power take-off shaft of a hydraulic system.
The engine gear train of the embodiment can directly provide driving force for the hydraulic system so as to simplify the power transmission structure of the engine and reduce the size of the power transmission structure, thereby being beneficial to the maintenance of the engine and reducing the volume of the engine.
As shown in fig. 1, the crankshaft accessory wheel set of the present embodiment optionally includes at least one crankshaft accessory wheel, and the crankshaft accessory wheel is engaged with the crankshaft idle wheel 5 and driven by the crankshaft idle wheel 5 to rotate so as to drive the crankshaft accessory wheel shaft connected with the crankshaft accessory wheel shaft to move.
The crankshaft accessory wheel is directly meshed with the crankshaft idle wheel 5 and rotates under the driving of the crankshaft idle wheel 5 to drive a crankshaft accessory wheel shaft connected with the crankshaft accessory wheel shaft to move, and the moving crankshaft accessory wheel shaft provides driving force for an accessory module connected with a shaft, so that the normal operation of the whole vehicle is facilitated.
As shown in fig. 1, optionally, the crankshaft accessory wheel set of the present embodiment includes a high-pressure oil pump gear 2 and an air compressor gear 4, the high-pressure oil pump gear 2 is used for driving the high-pressure oil pump, and the air compressor gear 4 is used for driving the air compressor.
Through this embodiment, the engine train can drive high-pressure oil pump and air compressor, is favorable to the normal operating of whole car.
As shown in fig. 1, the driven idler gear set of the present embodiment optionally further includes a camshaft idler gear 6, and the camshaft idler gear 6 is meshed with the camshaft gear 1 to drive a camshaft connected with the camshaft gear 1, so as to provide a driving force for the timing valve system.
Through this embodiment, the engine train can drive the gas distribution system, is favorable to the normal operating of whole car.
Alternatively, the crankshaft idle gear 5, the power take-off shaft idle gear 7, and the camshaft idle gear 6 of the present embodiment are connected with their fixed shafts by slide bearings, respectively.
The bearings are arranged to allow the crankshaft idler gear 5, the power take-off shaft idler gear 7 and the camshaft idler gear 6 to rotate freely, and the fixed shaft can be kept stationary.
Compared with a rolling bearing, the sliding bearing has the advantages of high transmission efficiency, good lubrication condition, low noise and the like, and the sliding bearing is arranged between the idle wheel and the idle wheel shaft, so that the transmission efficiency, the reliability and the precision of an engine gear train can be improved, and the noise generated when the sliding bearing is used can be reduced.
Alternatively, the crankshaft idle gear 5, the power take-off shaft idle gear 7 and the camshaft idle gear 6 may be connected to their fixed shafts through rolling bearings, respectively.
Alternatively, the crank gear 3, the high-pressure oil pump gear 2, the air compressor gear 4, the camshaft gear 1, and the power take-off shaft gear 8 of the present embodiment are each integrally formed with the shaft thereof.
The crankshaft gear 3 and the accessory wheel are respectively integrally formed with the shafts of the crankshaft gear and the accessory wheel, so that the stability of an engine wheel train is improved, and stable and reliable power output is provided for each accessory module.
As shown in fig. 1, the crankshaft idle gear 5 of the present embodiment is configured to have a crankshaft gear 3, a high-pressure oil pump gear 2, an air compressor gear 4, a camshaft idle gear 6, and a power take-off shaft idle gear 7 meshed in this order in the clockwise direction along the outer periphery thereof.
The embodiment enables the engine wheel train to be matched with the layout of the engine shell 10 and each accessory module of the engine, is beneficial to fully utilizing limited space, and enables the structure of the engine wheel train to be more compact so as to reduce the volume of the engine.
As shown in fig. 1, weight-reduction holes 9 are optionally uniformly distributed on the crankshaft idle gear 5 and the camshaft gear 1 of the present embodiment.
The embodiment can reduce the dead weight of the engine gear train by using the lightening holes 9, thereby being beneficial to reducing the noise generated during the operation of the engine and improving the transmission efficiency of the engine gear train.
Alternatively, each gear of the engine train of the present embodiment is made of steel.
Each gear made of steel has long service life and high reliability, thereby being beneficial to improving the stability of the engine gear train.
Alternatively, the engine wheel train of the present embodiment is located at the rear end of the engine, i.e. the above-mentioned engine wheel train is an engine rear end wheel train.
Compared with the engine front-end gear train, the engine rear-end gear train is convenient to maintain, and the driving gear of the air compressor, the high-pressure oil pump and the timing air distribution system is arranged at the rear end of the engine, so that the structure of the engine front-end gear train is prevented from being too complicated, the layout of the engine is more compact and reasonable, and the size of the engine is reduced.
The embodiment also provides an engine which comprises the engine gear train.
The engine wheel train of the engine can assist the crankshaft of the engine to drive the air compressor, the high-pressure oil pump and the timing air distribution system and simultaneously directly provide driving force for the hydraulic system so as to simplify the power transmission structure of the engine and reduce the size of the power transmission structure, thereby being beneficial to the maintenance of the engine and reducing the volume of the engine.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (10)
1. An engine train, comprising:
a crankshaft gear for connection with a crankshaft of an engine; and
a crankshaft idle gear engaged with the crankshaft gear to be rotated by the driving of the crankshaft gear; the crankshaft idle wheel is also respectively meshed with the crankshaft accessory wheel set and the transmission idle wheel set so as to drive the crankshaft accessory wheel set and the transmission idle wheel set to rotate; wherein the content of the first and second substances,
the transmission idle wheel set comprises a power take-off shaft idle wheel which is meshed with a power take-off shaft gear so as to drive a power take-off shaft connected with the power take-off shaft gear to move.
2. The engine train of claim 1 wherein the crankshaft accessory wheel set includes at least one crankshaft accessory wheel that is engaged with and rotated by the crankshaft idler wheel to drive a crankshaft accessory wheel shaft connected thereto.
3. The engine train of claim 2 wherein the crankshaft accessory wheel set includes a high pressure oil pump gear for driving a high pressure oil pump and an air compressor gear for driving an air compressor.
4. The engine train of claim 3 wherein the idler drive train further comprises an idler camshaft gear that meshes with a camshaft gear to drive a camshaft coupled to the camshaft gear to provide drive for a timing valve train.
5. An engine train as claimed in claim 4, wherein the crankshaft idle gear, the power take-off shaft idle gear and the camshaft idle gear are connected with their fixed shafts by slide bearings, respectively.
6. An engine train wheel according to claim 4, wherein the crankshaft gear, the high-pressure oil pump gear, the air compressor gear, the camshaft gear, and the power take-off shaft gear are each integrally formed with a shaft thereof.
7. An engine train as claimed in claim 4, wherein the crankshaft idler gear is meshed with the crankshaft gear, the high pressure oil pump gear, the air compressor gear, the camshaft idler gear and the power take-off shaft idler gear in this order clockwise along an outer periphery thereof.
8. An engine train as set forth in claim 4 wherein weight reducing holes are evenly distributed in said crankshaft idler gear and said camshaft gear.
9. An engine train according to any one of claims 1 to 8, wherein each gear of the engine train is made of steel.
10. An engine comprising an engine train as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021779957.8U CN212716899U (en) | 2020-08-24 | 2020-08-24 | Engine wheel train and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021779957.8U CN212716899U (en) | 2020-08-24 | 2020-08-24 | Engine wheel train and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212716899U true CN212716899U (en) | 2021-03-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021779957.8U Active CN212716899U (en) | 2020-08-24 | 2020-08-24 | Engine wheel train and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212716899U (en) |
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2020
- 2020-08-24 CN CN202021779957.8U patent/CN212716899U/en active Active
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