Engine and engine front end wheel system structure
阅读说明:本技术 一种发动机和发动机前端轮系结构 (Engine and engine front end wheel system structure ) 是由 彭庆永 彭升平 张典 杨信磊 吴云刚 杨长青 于 2020-07-02 设计创作,主要内容包括:本发明公开了一种发动机和发动机前端轮系结构,该发动机前端轮系结构包括曲轴皮带轮、水泵皮带轮和发电机皮带轮,还包括设于曲轴皮带轮、水泵皮带轮和发电机皮带轮的中间的风扇带轮;风扇带轮安装有冷却风扇;内带面用以张紧于曲轴皮带轮、水泵皮带轮和发电机皮带轮外周的双面多楔带;双面多楔带的外带面张紧于风扇带轮。该发动机前端轮系结构令风扇带轮安装于曲轴皮带轮、水泵皮带轮和发电机皮带轮三者之间,充分有效利用发动机内部的空间;上述多个结构的相互位置关系结合双面多楔带的双面齿啮合,实现上述多个结构的同步驱动,便于发动机的整车布置,便于通过调节风扇带轮的直径和尺寸来调节冷却风扇的速比和冷却效果。(The invention discloses an engine and a front-end gear train structure of the engine, wherein the front-end gear train structure of the engine comprises a crankshaft belt pulley, a water pump belt pulley, a generator belt pulley and a fan belt pulley arranged among the crankshaft belt pulley, the water pump belt pulley and the generator belt pulley; the fan belt wheel is provided with a cooling fan; the inner belt surface is used for tensioning a double-sided poly-wedge belt on the periphery of the crankshaft belt pulley, the water pump belt pulley and the generator belt pulley; the outer belt surface of the double-sided V-ribbed belt is tensioned on a fan belt wheel. The front-end gear train structure of the engine enables the fan belt pulley to be arranged among the crankshaft belt pulley, the water pump belt pulley and the generator belt pulley, and fully and effectively utilizes the space inside the engine; the mutual position relation of the multiple structures is combined with the double-sided tooth meshing of the double-sided V-ribbed belt, so that the synchronous driving of the multiple structures is realized, the whole vehicle arrangement of an engine is facilitated, and the speed ratio and the cooling effect of the cooling fan are conveniently adjusted by adjusting the diameter and the size of the fan belt wheel.)
1. The utility model provides an engine front end train structure, includes crank pulley (1), water pump pulley (2) and generator pulley (3), its characterized in that still includes:
the fan belt pulley (4) is arranged among the crankshaft belt pulley (1), the water pump belt pulley (2) and the generator belt pulley (3); the fan belt wheel (4) is provided with a cooling fan (10);
the double-sided V-belt (5) is used for tensioning the peripheries of the crankshaft pulley (1), the water pump pulley (2) and the generator pulley (3) on the inner belt surface; the outer belt surface of the double-sided V-belt (5) is tensioned on the fan belt wheel (4).
2. The engine front end gear train structure according to claim 1, further comprising a fan bracket (6) for fixedly connecting the engine block; the fan belt wheel (4) is detachably and rotatably connected to the fan bracket (6);
and a tensioning wheel (7) is arranged on one side of the double-sided V-ribbed belt (5).
3. The engine front end train wheel structure according to claim 2, wherein the tension pulley (7) is in tooth engagement with an outer belt surface of the double-sided v-ribbed belt (5).
4. Engine front end train structure according to claim 2, characterized in that the fan pulley (4) is tooth-meshed with the double-sided v-ribbed belt (5) between the crank pulley (1) and the generator pulley (3).
5. The engine front end train structure according to claim 4, wherein the tension pulley (7) is tooth-meshed with the double-sided v-ribbed belt (5) between the crank pulley (1) and the water pump pulley (2).
6. An engine front end train structure according to claim 5, wherein an idler pulley (8) is installed between the water pump pulley (2) and the generator pulley (3); the idler pulley (8) is meshed with the inner belt surface teeth of the double-sided V-ribbed belt (5).
7. Engine front end train structure according to claim 2, characterized in that the cooling fan (10) and fan pulley (4) are fitted to the fan bracket (6) through a connecting flange (9).
8. The engine front end train wheel structure according to claim 1, wherein the fan pulley (4) and the cooling fan (10) are coaxial; the fan belt wheel (4) is arranged in the inner center of a plane geometry surrounded by the crankshaft belt wheel (1), the water pump belt wheel (2) and the generator belt wheel (3).
9. An engine characterized by comprising the engine front end train wheel structure of any one of claims 1 to 8.
Technical Field
The invention relates to the field of engines, in particular to a front-end gear train structure of an engine. The invention also relates to an engine which comprises the engine front-end gear train structure.
Background
At present, with the implementation of the national six-emission standard of a heavy-duty diesel vehicle, the matched diesel engine is required to reach the national six-emission standard, the thermal load of the national six-diesel engine is high, and the installation and the arrangement of a cooling fan are particularly important for improving the heat dissipation requirement of a cooling system of the whole vehicle.
In an engine front-end train layout, the cooling fan is typically mounted on the crankshaft with a 1:1 speed ratio. The cooling fan is limited in the space layout of the whole vehicle, and the diameter of the cooling fan is fixed. In the case where the thermal load of the engine increases, in order to improve the cooling capacity of the cooling fan, only the existing engine train arrangement can be modified to improve the speed ratio of the cooling fan.
Disclosure of Invention
The invention aims to provide an engine front-end gear train structure, which can improve the layout of a cooling fan in an engine front-end gear train so as to improve the refrigeration effect of the cooling fan. Another object of the present invention is to provide an engine including the above engine front end train structure.
In order to achieve the above object, the present invention provides a front end gear train structure of an engine, which includes a crankshaft pulley, a water pump pulley and a generator pulley, and further includes:
the fan belt pulley is arranged among the crankshaft belt pulley, the water pump belt pulley and the generator belt pulley; the fan belt wheel is provided with a cooling fan;
the inner belt surface is used for tensioning the double-sided V-belt on the peripheries of the crankshaft belt pulley, the water pump belt pulley and the generator belt pulley; the outer belt surface of the double-sided poly-V belt is tensioned on the fan belt wheel.
Preferably, the fan bracket is used for fixedly connecting the engine block; the fan belt wheel is detachably and rotatably connected to the fan bracket;
and a tensioning wheel is arranged on one side of the double-sided V-ribbed belt.
Preferably, the tensioning wheel is meshed with the outer belt surface teeth of the double-sided V-ribbed belt.
Preferably, the fan pulley is in toothed engagement with the double-sided multi-wedge belt between the crankshaft pulley and the generator pulley.
Preferably, the tension pulley is in toothed engagement with the double-sided multi-wedge belt between the crankshaft pulley and the water pump pulley.
Preferably, an idler pulley is installed between the water pump pulley and the generator pulley; the idler wheel is meshed with the inner belt surface teeth of the double-sided V-ribbed belt.
Preferably, the cooling fan and the fan pulley are mounted to the fan bracket through a coupling flange.
Preferably, the fan pulley and the cooling fan are coaxial; the fan belt pulley is arranged in the inner center of a plane geometry surrounded by the crankshaft belt pulley, the water pump belt pulley and the generator belt pulley.
The invention also provides an engine which comprises the engine front end gear train structure.
Compared with the prior art, the engine front end wheel system structure provided by the invention comprises a crankshaft pulley, a water pump pulley, a generator pulley, a fan pulley and a double-sided V-belt. Wherein, the fan belt wheel is fixedly provided with a cooling fan.
The fan belt wheel is arranged in the middle of the crankshaft belt wheel, the water pump belt wheel and the generator belt wheel and does not interfere with the crankshaft belt wheel, the water pump belt wheel and the generator belt wheel in the installation position and the movement range. The double-sided poly V-belt is sleeved on the peripheries of the crankshaft belt pulley, the water pump belt pulley and the generator belt pulley, namely, the inner belt surface of the double-sided poly V-belt is respectively tensioned and meshed with the crankshaft belt pulley, the water pump belt pulley and the generator belt pulley, so that synchronous rotation of the crankshaft belt pulley, the water pump belt pulley and the generator belt pulley is realized. The outer belt surface of the double-sided poly-wedge belt is tensioned and meshed with the fan belt wheel, so that the fan belt wheel and the cooling fan are driven to synchronously rotate.
The invention arranges the fan belt wheel in the middle of the crankshaft belt wheel, the water pump belt wheel and the generator belt wheel, but not arranged on the crankshaft. The mounting position of the fan belt wheel can fully and reasonably utilize the space inside the engine, the positioning and mounting of the cooling fan are met, and the overall size of the engine is effectively controlled. The speed ratio of the cooling fan can be adjusted by adjusting the size of the fan belt wheel, and the cooling effect of the engine front-end gear train structure is further improved. The engine front-end wheel system structure combines the mutual position relations among the fan belt wheel, the crankshaft belt wheel, the water pump belt wheel and the generator belt wheel, and the invention adopts the outer belt surface and the inner standby surface of the double-sided poly-wedge belt to simultaneously drive the fan belt wheel, the crankshaft belt wheel, the water pump belt wheel and the generator belt wheel to rotate, thereby realizing the control of the engine front-end wheel system structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a front end gear train structure of an engine according to an embodiment of the present invention;
FIG. 2 is a schematic view of an assembly of a fan pulley, a fan bracket and a coupling flange according to an embodiment of the present invention;
fig. 3 is a schematic tooth form diagram of a double-sided v-ribbed belt according to an embodiment of the present invention.
The device comprises a
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a front end gear train structure of an engine according to an embodiment of the present invention; FIG. 2 is a schematic view of an assembly of a fan pulley, a fan bracket and a coupling flange according to an embodiment of the present invention; fig. 3 is a schematic tooth form diagram of a double-sided v-ribbed belt according to an embodiment of the present invention.
The invention provides a front-end gear train structure of an engine, which comprises a
The installation positions of the
The
The
The
The invention adopts a double-sided V-
Therefore, the
The inner belt surface and the outer belt surface of the double-sided V-ribbed
The structure of the front end gear train of the engine provided by the invention is further explained with reference to the attached drawings and the embodiment.
On the basis of the above embodiment, the present invention is further provided with a
Considering that the
Therefore, the speed ratio of the cooling
The
The
The
In this embodiment, in order to ensure that the double-sided v-ribbed
The
The tensioning force of the double-sided poly-
The double-sided V-ribbed
The following provides a specific mounting position of the
On the basis of the structure, the
Further, an
The
Because the
The invention also provides an engine, which comprises the engine front-end gear train structure provided by any one of the embodiments. The engine front end wheel system structure is arranged in an engine cylinder body.
The
The engine and the engine front-end wheel system structure provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
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