Gear train arrangement

Abstract

The utility model discloses a gear train arrangement which comprises a generator belt pulley, a crankshaft belt pulley and a water pump fan belt pulley, two belt grooves with different inner diameters are arranged on the water pump fan belt pulley, and the crankshaft belt pulley and the water pump fan belt pulley are in transmission connection through a first belt. The first belt is located in the belt groove with the small inner diameter, the water pump fan belt wheel and the generator belt wheel are connected through a second belt, and the second belt is located in the belt groove with the large inner diameter. The first belt and the second belt are used for transmission, so that the load of the belts can be effectively reduced, the service life of the belts is prolonged, the belt grooves with different inner diameters are formed in the water pump fan belt pulley, and the transmission ratio among the crankshaft belt pulley, the fan water pump belt pulley and the generator belt pulley can be effectively changed.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engines, in particular to a gear train arrangement. Background Technique

[0002] A diesel engine is a thermal energy machine that burns diesel to convert chemical energy into mechanical energy. The gear train is one of the key components of the front-end transmission system of the engine, which is arranged at the front of the engine and is used to drive a water pump, a fan, a generator, an air conditioner, and an air compressor. It usually includes a generator pulley, a crankshaft pulley, and a water pump fan pulley.

[0003] In the existing diesel gear train arrangement, the transmission is often carried out by a single belt during operation. During use, since the radii of the generator pulley, the crankshaft pulley, and the water pump fan pulley are almost the same, the transmission ratio of the existing engine is small, the wrap angle of the multi-pulley transmission is small, and the load on the single belt is large, which affects the service life of the belt. Content of the Utility Model

[0004] (I) Purpose of the Utility Model

[0005] To solve the technical problems existing in the background technique, the utility model provides a gear train arrangement. During the transmission process, the device is driven by a first belt and a second belt respectively, so as to effectively reduce the load on the belt and extend the service life of the belt. In addition, the water pump fan pulley is provided with belt grooves with different inner diameters, so as to effectively change the transmission ratio among the crankshaft pulley, the fan water pump pulley, and the generator pulley, and further improve the transmission efficiency of the crankshaft pulley, the fan water pump pulley, and the generator pulley.

[0006] (II) Technical Solution

[0007] The utility model provides a gear train arrangement, which includes a generator pulley, a crankshaft pulley, and a water pump fan pulley. The water pump fan pulley is provided with two belt grooves with different inner diameters. The crankshaft pulley and the water pump fan pulley are connected by a first belt in transmission, and the first belt is located in the belt groove with a smaller inner diameter. The water pump fan pulley and the generator pulley are connected by a second belt, and the second belt is located in the belt groove with a larger inner diameter.

[0008] Preferably, it further includes an automatic tensioning pulley. A transmission disc is coaxially rotated on the automatic tensioning pulley. The automatic tensioning pulley is connected with the crankshaft pulley and the water pump fan pulley in transmission by the first belt, and the transmission disc is connected with the water pump fan pulley and the generator pulley in transmission by the second belt.

[0009] Preferably, the position of the generator pulley is adjustable.

[0010] Preferably, it includes a lower bracket and an upper bracket. The generator pulley is arranged on the generator. The upper bracket and the lower bracket are arranged at intervals up and down. The generator is rotatably arranged on the lower bracket and is slidably connected to the upper bracket. The generator is connected to the lower bracket through a first limiting unit, and the generator is connected to the upper bracket through a second limiting unit.

[0011] Preferably, the first limiting unit includes a first screw rod and a first bolt. The lower bracket is provided with a mounting hole, and the generator is provided with a fixing hole corresponding to the mounting hole. One end of the first screw rod sequentially passes through the mounting hole and the fixing hole. The first screw rod abuts against the lower bracket. A first nut is coaxially threaded on the first screw rod, and the first nut abuts against the generator.

[0012] Preferably, the second limiting unit includes a second screw rod. The upper bracket is provided with a strip-shaped through hole, and the engine is provided with a connection hole communicating with the strip-shaped through hole. One end of the second screw rod sequentially passes through the strip-shaped through hole and the connection hole. The second screw rod is slidably connected to the inner wall of the strip-shaped through hole. The second screw rod abuts against the upper bracket. A second nut is coaxially threaded on the second screw rod, and the second nut abuts against the generator.

[0013] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0014] In the present invention, the crankshaft pulley drives the water pump fan pulley to rotate through the first belt, and the rotation of the water pump fan pulley drives the generator pulley to rotate through the second belt. In the transmission process of the device, the first belt and the second belt are respectively used for transmission, so that the load of the belt can be effectively reduced, and the service life of the belt is prolonged. Moreover, the water pump fan pulley is provided with belt grooves with different inner diameters, so that the transmission ratio between the crankshaft pulley, the fan water pump pulley and the generator pulley can be effectively changed, thereby further improving the transmission efficiency of the crankshaft pulley, the fan water pump pulley and the generator pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a gear train arrangement proposed by the present invention.

[0016] Figure 2 It is a schematic installation structure diagram of the first belt and the second belt in a gear train arrangement proposed by the present invention.

[0017] Reference numerals: 1, generator pulley; 2, crankshaft pulley; 3, water pump fan pulley; 4, automatic tensioner; 5, first belt; 6, second belt; 7, lower bracket; 8, upper bracket. Detailed implementation

[0018] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the specific implementation manners and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0019] In the description of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0020] In the description of the utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, such as welding, riveting, bonding, etc., or a detachable connection, such as threaded connection, key connection, pin connection, etc., or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] As Figure 1-2 shown, a gear train arrangement proposed by the present utility model includes a generator pulley 1, a crankshaft pulley 2 and a water pump fan pulley 3. The water pump fan pulley 3 is provided with two belt grooves with different inner diameters. The crankshaft pulley 2 and the water pump fan pulley 3 are drivingly connected by a first belt 5. The first belt 5 is located in the belt groove with a smaller inner diameter. The water pump fan pulley 3 and the generator pulley 1 are connected by a second belt 6. The second belt 6 is located in the belt groove with a larger inner diameter.

[0022] In the present utility model, the crankshaft pulley 2 drives the water pump fan pulley 3 to rotate through the first belt 5, and the rotation of the water pump fan pulley 3 drives the generator pulley 1 to rotate through the second belt 6. This device is driven by the first belt 5 and the second belt 6 respectively during the transmission process, thereby effectively reducing the load on the belts and extending the service life of the belts. Moreover, the water pump fan pulley 3 is provided with belt grooves of different inner diameters, so that the transmission ratio between the crankshaft pulley 2, the fan water pump pulley and the generator pulley 1 can be effectively changed, thereby further improving the transmission efficiency of the crankshaft pulley 2, the fan water pump pulley and the generator pulley 1.

[0023] In an alternative embodiment, it further includes an automatic tensioner 4. A transmission disc is coaxially rotatably provided on the automatic tensioner 4. The automatic tensioner 4 is drivingly connected to the crankshaft pulley 2 and the water pump fan pulley 3 through the first belt 5. The transmission disc is drivingly connected to the water pump fan pulley 3 and the generator pulley 1 through the second belt 6. The first belt 5 and the second belt 6 are both drivingly connected to the automatic tensioner 4, so that the tightness of the first belt 5 and the second belt 6 can be adjusted through the automatic tensioner 4, thereby effectively reducing the working intensity of the staff when disassembling or maintaining the first belt 5 and the second belt 6.

[0024] In an alternative embodiment, the position of the generator pulley 1 is adjustable. By the adjustable generator pulley 1, the tightness of the second belt 6 can be further adjusted, which is further convenient for the staff to replace or repair the second belt 6.

[0025] In an alternative embodiment, it includes a lower bracket 7 and an upper bracket 8. The generator pulley is arranged on the generator. The upper bracket 8 and the lower bracket 7 are arranged at intervals up and down. The generator is rotatably arranged on the lower bracket 7 and is slidably connected to the upper bracket 8. The generator is connected to the lower bracket 7 through a first limiting unit, and the generator is connected to the upper bracket 8 through a second limiting unit. When it is necessary to drive the generator pulley 1 to move, the limits of the first limiting unit and the second limiting unit on the generator are cancelled respectively, and the position of the generator pulley 1 is adjusted by rotating the generator. And the generator rotates on the upper bracket 8. When it is necessary to fix the generator, only the first limiting unit and the second limiting unit are used to limit the generator to the lower bracket 7 and the upper bracket 8 respectively. Therefore, although the position of the generator pulley 1 can be adjusted by adjusting the position of the generator, the stability of the generator during operation can be ensured by the first limiting unit and the second limiting unit.

[0026] In an alternative embodiment, the first limiting unit includes a first screw rod and a first bolt. The lower bracket 7 is provided with a mounting hole, and the generator is provided with a fixing hole corresponding to the mounting hole. One end of the first screw rod sequentially passes through the mounting hole and the fixing hole. The first screw rod abuts against the lower bracket 7. A first nut is coaxially threadedly sleeved on the first screw rod, and the first nut abuts against the generator. When the generator needs to be rotated, the first nut is rotated to cancel the abutment between the first nut and the generator, so that the generator can be easily rotated. When the generator needs to be re-limited to the lower bracket 7, the first nut is rotated until it abuts against the generator.

[0027] In an alternative embodiment, the second limiting unit includes a second screw rod. The upper bracket 8 is provided with a strip-shaped through hole, and the engine is provided with a connection hole communicating with the strip-shaped through hole. One end of the second screw rod sequentially passes through the strip-shaped through hole and the connection hole. The second screw rod is slidably connected to the inner wall of the strip-shaped through hole. The second screw rod abuts against the upper bracket 8. A second nut is coaxially threadedly sleeved on the second screw rod, and the second nut abuts against the generator. By rotating the second nut to cancel the abutment between the second nut and the generator, the engine can be rotated. During the rotation of the engine, the second screw rod and the second nut are driven to slide in the strip-shaped through hole. When the engine is rotated to the required position, the second nut is tightened to complete the limitation of the generator to the upper bracket 8.

[0028] Wherein the transmission ratio between the crankshaft pulley 2 and the fan water pump pulley is greater than 1.4.

[0029] The transmission ratio between the fan water pump pulley and the generator pulley 1 is greater than 1.4.

[0030] The speed ratio between the generator pulley 1 and the crankshaft pulley 2 is greater than 1.96.

[0031] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A gear train arrangement, characterized in that: The invention comprises a generator pulley (1), a crankshaft pulley (2) and a water pump fan pulley (3), wherein the water pump fan pulley (3) is provided with two belt grooves with different inner diameters, the crankshaft pulley (2) and the water pump fan pulley (3) are connected by a first belt (5), the first belt (5) is located in the belt groove with a smaller inner diameter, the water pump fan pulley (3) and the generator pulley (1) are connected by a second belt (6), and the second belt (6) is located in the belt groove with a larger inner diameter.

2. A gear train arrangement according to claim 1, characterized in that: It also includes an automatic tensioning wheel (4), on which a transmission disk is coaxially rotatable, the automatic tensioning wheel (4) is transmission-connected to the crankshaft pulley (2) and the water pump fan pulley (3) via a first belt (5), and the transmission disk is transmission-connected to the water pump fan pulley (3) and the generator pulley (1) via a second belt (6).

3. A gear train arrangement according to claim 1, characterized in that: The position of the generator pulley (1) can be adjusted.

4. A gear train arrangement according to claim 3, characterized in that: The invention comprises a lower bracket (7) and an upper bracket (8), wherein the generator wheel is arranged on the generator, the upper bracket (8) and the lower bracket (7) are arranged with a vertical interval, the generator is rotatably arranged on the lower bracket (7) and is slidably connected to the upper bracket (8), the generator and the lower bracket (7) are connected via a first limiting unit, and the generator and the upper bracket (8) are connected via a second limiting unit.

5. A gear train arrangement according to claim 4, characterized in that: The first limiting unit comprises a first screw rod and a first bolt, the lower bracket (7) is provided with a mounting hole, the generator is provided with a fixing hole corresponding to the mounting hole, one end of the first screw rod passes through the mounting hole and the fixing hole in sequence, the first screw rod abuts against the lower bracket (7), a first nut is coaxially threadedly sleeved on the first screw rod, and the first nut abuts against the generator.

6. A gear train arrangement according to claim 4, characterized in that: The second limiting unit comprises a second screw rod, the upper bracket (8) is provided with a strip-shaped through hole, the engine is provided with a connecting hole interconnected with the strip-shaped through hole, one end of the second screw rod passes through the strip-shaped through hole and the connecting hole in sequence, the second screw rod is slidably connected to the inner wall of the strip-shaped through hole, the second screw rod abuts against the upper bracket (8), a second nut is coaxially threadedly sleeved on the second screw rod, and the second nut abuts against the generator.

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