Front-end wheel train of non-road diesel engine

Abstract

The utility model discloses a non-road diesel engine front end wheel train which comprises a crankshaft shock absorber belt pulley, a generator belt pulley, a water pump belt pulley, a fan belt pulley, a first air conditioner belt pulley and a second air conditioner belt pulley. The crankshaft damper belt pulley is further provided with a crankshaft damper inner wheel and a crankshaft damper outer wheel which rotate synchronously with the crankshaft damper belt pulley. The crankshaft damper belt pulley is sequentially in transmission connection with the generator belt pulley and the water pump belt pulley through a first transmission belt. The crankshaft damper inner wheel is in transmission connection with the first air conditioner belt pulley through a second transmission belt, and the crankshaft damper outer wheel is in transmission connection with the fan belt pulley. The speed ratio is adjusted by adjusting the diameter of the fan belt pulley or the diameter of the crankshaft shock absorber outer wheel according to actual use requirements, so that the heat dissipation requirements of different engines are met, and the applicability of the engines is improved. Meanwhile, the height of the fan belt pulley can be flexibly adjusted to adapt to arrangement of different water tanks, and the development and production cost of the engine is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of diesel engine gear trains, and more specifically, to a front-end gear train for a non-road diesel engine. Background Art

[0002] Drive wheels of components such as an air conditioner, a water pump, a fan, and an engine are arranged on the engine. These drive wheels are directly connected to the engine through drive belts to form a gear train, and the engine drives these components to operate uniformly. In a diesel engine, the cooling fan and the water pump in its front-end gear train are driven by the same drive belt to form the same gear train, and their speed ratios are the same. After the engine is arranged, the speed ratio of the fan cannot be adjusted according to the actual cooling requirement, which has certain limitations. At the same time, in the applications in non-road complex markets, the heat dissipation requirements of agricultural machinery and construction machinery are not necessarily the same, which requires different positions and rotation speeds of the fans. The existing engines cannot be flexibly set according to actual requirements. Content of the Utility Model

[0003] In order to overcome the problem in the prior art that the engine gear train is fixedly arranged, the position and the speed ratio cannot be flexibly adjusted according to actual requirements, and to meet the requirements of different machines, the engine needs to consume a large cost for modification and adjustment.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a front-end gear train for a non-road diesel engine, which includes a crankshaft damper pulley, a generator pulley, a water pump pulley, a fan pulley, a first air conditioner pulley, and a second air conditioner pulley. A crankshaft damper inner wheel and a crankshaft damper outer wheel that rotate synchronously with the crankshaft damper pulley are further arranged on the crankshaft damper pulley. The crankshaft damper pulley is sequentially connected to the generator pulley and the water pump pulley through a first drive belt; the crankshaft damper inner wheel is connected to the first air conditioner pulley through a second drive belt, or a fan outer wheel is further arranged on the fan pulley, the fan outer wheel is connected to the second air conditioner pulley through a fourth drive belt, and the crankshaft damper outer wheel is connected to the fan pulley through a third drive belt.

[0006] In a preferred technical solution of the utility model, a first idler pulley is arranged between the crankshaft damper pulley and the generator pulley, and the first idler pulley abuts against the first drive belt.

[0007] In a preferred technical solution of the utility model, a second idler pulley is arranged between the water pump pulley and the crankshaft damper pulley, and the second idler pulley abuts against the first drive belt.

[0008] In a preferred technical solution of the present utility model, a third idler pulley is arranged between the outer wheel of the crankshaft damper and the fan pulley, and the third idler pulley abuts against the third transmission belt.

[0009] In a preferred technical solution of the present utility model, a first tension pulley is further arranged between the fan pulley and the outer wheel of the crankshaft damper, and the first tension pulley abuts against the third transmission belt.

[0010] In a preferred technical solution of the present utility model, a second tension pulley is arranged between the water pump pulley and the crankshaft damper pulley, and the second tension pulley abuts against the first transmission belt.

[0011] In a preferred technical solution of the present utility model, an installation backing plate is further included. The fan pulley is arranged on the installation backing plate, and a plurality of installation positions with different heights for installing the fan belt are arranged on the installation backing plate.

[0012] In a preferred technical solution of the present utility model, the crankshaft damper pulley, the generator pulley, the water pump pulley, the first air conditioner pulley and the second air conditioner pulley are all grooved pulleys.

[0013] In a preferred technical solution of the present utility model, fan blades are fixed on the outer side of the fan pulley.

[0014] In a preferred technical solution of the present utility model, the fan pulley is located above the crankshaft damper pulley, and the water pump pulley, the generator pulley and the first air conditioner pulley are all arranged around the crankshaft damper pulley.

[0015] The beneficial effects of the present utility model are as follows:

[0016] A front-end pulley system of a non-road diesel engine provided by the present utility model can freely adjust the diameter of the fan pulley or the outer wheel of the crankshaft damper according to actual use needs to adjust the speed ratio by separating the water pump pulley and the fan pulley into different pulley systems, so as to meet the heat dissipation requirements of different engines and improve the applicability of the engine. At the same time, this pulley system can also adjust the height of the fan in the pulley system to meet the requirements for the fan position in different engine usage requirements, and meet different application scenarios and different user needs. This pulley system layout can achieve multiple usage requirements, effectively reducing the development and production costs of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a front-end pulley system of a non-road diesel engine provided by a specific embodiment of the present utility model;

[0018] Figure 2 isFigure 1 Explosion structure schematic diagram;

[0019] Figure 3 is Figure 1 Front view structure schematic diagram.

[0020] In the figure:

[0021] 1 - Crankshaft damper pulley, 11 - Outer wheel of crankshaft damper, 2 - Generator pulley, 3 - Fan pulley, 31 - Outer wheel of fan, 32 - Fan blade, 4 - First air conditioner pulley, 5 - Second air conditioner pulley, 6 - Water pump pulley, 71 - First drive belt, 72 - Second drive belt, 73 - Third drive belt, 74 - Fourth drive belt, 81 - First idler pulley, 83 - Third idler pulley, 84 - First tension pulley, 9 - Mounting pad. Specific embodiments

[0022] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0023] As Figures 1-3 shown, in the embodiment, a front-end gear train for a non-road diesel engine is provided, including a crankshaft damper pulley 1, a generator pulley 2, a water pump pulley 6, a fan pulley 3, a first air conditioner pulley 4, and a second air conditioner pulley 5. An inner wheel of the crankshaft damper that rotates synchronously with the crankshaft damper pulley 1 and an outer wheel 11 of the crankshaft damper are further provided on the crankshaft damper pulley 1. The crankshaft damper pulley 1 is sequentially connected to the generator pulley 2 and the water pump pulley 6 through a first drive belt 71; the inner wheel of the crankshaft damper is connected to the first air conditioner pulley 4 through a second drive belt 72, or an outer wheel 31 of the fan is further provided on the fan pulley 3, and the outer wheel 31 of the fan is connected to the second air conditioner pulley 5 through a fourth drive belt 74. The outer wheel 11 of the crankshaft damper is connected to the fan pulley 3 through a third drive belt 73,

[0024] In this planetary gear system, when the engine is running, the crankshaft damper pulley 1 rotates. The crankshaft damper pulley 1 drives the generator pulley 2 and the water pump pulley 6 through the first drive belt 71, thereby driving the engine to generate electricity and the water pump to operate, realizing power generation and the circulation of the coolant, and forming the first gear train. The crankshaft damper also drives its rotation through the inner crankshaft damper wheel and the outer crankshaft damper wheel 11 connected thereto. The inner damper wheel drives the first air conditioner pulley 4 through the second drive belt 72, thereby realizing the operation of the first air conditioner. The outer damper wheel drives the rotation of the fan pulley 3 through the third drive belt 73, thereby driving the fan to operate. By setting the diameter of the outer damper wheel or the diameter of the fan pulley 3, the speed ratio can be changed, and thus the rotation of the fan can be adjusted according to actual application requirements without affecting the operation of other components, meeting different usage requirements, and effectively reducing development and production costs.

[0025] In this embodiment, according to the usage requirements of the engine, the second air conditioner pulley 5 in the upper position is selected to use the second air conditioner, or the first air conditioner pulley 4 in the lower position is selected to drive the first air conditioner. This facilitates the user to adjust the air conditioner position according to the actual situation for subsequent maintenance. And according to the speed ratio required in actual use, the installation position is selected to make the setting of the engine more reasonable and efficient.

[0026] In a preferred technical solution of the present utility model, a first idler pulley 81 is provided between the crankshaft damper pulley 1 and the generator pulley 2, and the first idler pulley 81 abuts against the first drive belt 71. The first idler pulley 81 presses the first drive belt 71 tightly and can adjust the direction of the first drive belt 71 so that the drive line can be properly arranged at the front end of the engine without being affected, enabling the normal operation of each gear train without interference.

[0027] In a preferred technical solution of the present utility model, a second idler pulley is provided between the water pump pulley 6 and the crankshaft damper pulley 1, and the second idler pulley abuts against the first drive belt 71. The second idler pulley plays the same role as the first idler pulley 81, pressing the first drive belt 71 tightly to ensure the transmission of power and prevent the drive belt from slipping.

[0028] In a preferred technical solution of the present utility model, a third idler pulley 83 is provided between the outer crankshaft damper wheel 11 and the fan pulley 3, and the third idler pulley 83 abuts against the third drive belt 73. Similar to the first two idler pulleys, the third idler pulley 83 presses the third drive belt 73 tightly, enabling the power of this gear train to be efficiently transmitted, changing the setting direction of the third drive belt 73 and reducing the loss of transmitted power.

[0029] In a preferred technical solution of the present utility model, a first tension pulley 84 is further provided between the fan pulley 3 and the outer wheel 11 of the crankshaft damper. The first tension pulley 84 abuts against the third drive belt 73. The first tension pulley 84 presses the third drive belt 73 tightly, so that the third drive belt 73 is in a tensioned state, enabling the third drive belt 73 to be in a tight power transmission state, avoiding virtual positions in the power transmission between the fan pulley 3 and the outer wheel 11 of the crankshaft damper that may cause slipping, improving the reliability of power transmission, making the drive belt more compact, and preventing interference between drive belts.

[0030] In a preferred technical solution of the present utility model, a second tension pulley is provided between the water pump pulley 6 and the crankshaft damper pulley 1. The second tension pulley abuts against the first drive belt 71. The second tension pulley also presses the first drive belt 71 tightly, avoiding a reduction in the power transmission efficiency between the crankshaft damper pulley 1 and the water pump pulley 6.

[0031] In a preferred technical solution of the present utility model, it further includes a mounting base plate 9. The fan pulley 3 is arranged on the mounting base plate 9, and the mounting base plate 9 is provided with a plurality of mounting positions for mounting the fan belt at different heights. The setting of the mounting base plate 9 enables the fan pulley 3 to move up and down, meeting the different mounting height positions of the fan under different usage requirements. After adjusting to different heights, only the drive belt needs to be re-adapted, without affecting the layout of other pulley systems, meeting the heat dissipation requirements under different working conditions, and improving the applicability of the engine.

[0032] In a preferred technical solution of the present utility model, the crankshaft damper pulley 1, the generator pulley 2, the water pump pulley 6, the first air conditioner pulley 4, and the second air conditioner pulley 5 are all grooved pulleys. The setting of the grooved pulleys enables the drive belt to be closely on the pulley, preventing the drive belt from slipping off the pulley during transmission.

[0033] In a preferred technical solution of the present utility model, a fan blade 32 is fixed to the outside of the fan pulley 3. The fan pulley 3 is driven to rotate by the drive belt, and the rotating fan pulley 3 drives the fan blade 32 to rotate to achieve heat dissipation.

[0034] In a preferred technical solution of the present utility model, the fan pulley 3 is located above the crankshaft damper pulley 1, and the water pump pulley 6, the generator pulley 2, and the first air conditioner pulley 4 are all arranged around the crankshaft damper pulley 1. The crankshaft damper drives a plurality of pulleys through a plurality of drive belts to provide power for each pulley system.

[0035] Other technologies of this embodiment adopt existing technologies.

[0036] The present utility model is described by way of preferred embodiments. Those skilled in the art will appreciate that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present utility model. The present utility model is not limited by the specific embodiments disclosed herein, and other embodiments falling within the scope of the claims of this application belong to the scope of protection of the present utility model.

Claims

1. A front-end gear train for a non-road diesel engine, characterized in that: The crankshaft vibration damper pulley (1) comprises a crankshaft vibration damper pulley (1), a generator pulley (2), a water pump pulley (6), a fan pulley (3), a first air conditioner pulley (4), and a second air conditioner pulley (5). The crankshaft vibration damper pulley (1) is also provided with a crankshaft vibration damper inner wheel and a crankshaft vibration damper outer wheel (11) which rotate synchronously with the crankshaft vibration damper pulley (1). The crankshaft vibration damper pulley (1) is sequentially connected to the generator pulley (2) and the water pump pulley (6) through a first transmission belt (71). The inner wheel of the crankshaft damper is connected to the first air conditioner pulley (4) through a second transmission belt (72), or the fan pulley (3) is further provided with a fan outer wheel (31), and the fan outer wheel (31) is connected to the second air conditioner pulley (5) through a fourth transmission belt (74); The crankshaft damper outer wheel (11) is connected to the fan pulley (3) via a third transmission belt (73).

2. A non-road diesel engine front end gear train according to claim 1, characterized in that: A first idler wheel (81) is arranged between the crankshaft damper pulley (1) and the generator pulley (2), and the first idler wheel (81) abuts against the first transmission belt (71).

3. The front end gear train of a non-road diesel engine according to claim 1, characterized in that: A second idler wheel is arranged between the water pump pulley (6) and the crankshaft damper pulley (1), and the second idler wheel abuts against the first transmission belt (71).

4. The front end gear train of a non-road diesel engine according to claim 1, characterized in that: A third idler wheel (83) is arranged between the crankshaft damper outer wheel (11) and the fan pulley (3), and the third idler wheel (83) abuts against the third transmission belt (73).

5. The front end gear train of a non-road diesel engine according to claim 1, characterized in that: A first tension wheel (84) is also provided between the fan pulley (3) and the crankshaft damper outer wheel (11), and the first tension wheel (84) abuts against the third transmission belt (73).

6. The front end gear train of a non-road diesel engine according to claim 1, characterized in that: A second tensioning wheel is arranged between the water pump pulley (6) and the crankshaft damper pulley (1), and the second tensioning wheel abuts against the first transmission belt (71).

7. The front end gear train of a non-road diesel engine according to claim 1, characterized in that: It also comprises a mounting pad (9), the fan pulley (3) is arranged on the mounting pad (9), and the mounting pad (9) is provided with a plurality of mounting positions at different heights for mounting the fan belt.

8. The front end gear train of a non-road diesel engine according to claim 1, characterized in that: The crankshaft damper pulley (1), the generator pulley (2), the water pump pulley (6), the first air conditioner pulley (4) and the second air conditioner pulley (5) are all grooved pulleys.

9. The front end gear train of a non-road diesel engine according to claim 1, characterized in that: A fan blade (32) is fixed on the outer side of the fan pulley (3).

10. The front end gear train of a non-road diesel engine according to claim 1, characterized in that: The fan pulley (3) is located above the crankshaft damper pulley (1), and the water pump pulley (6), the generator pulley (2) and the first air conditioner pulley (4) are all arranged around the crankshaft damper pulley (1).

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