CN210290617U - Four-wheel drive gearbox, vehicle power system and crop harvester - Google Patents

Abstract

The utility model discloses a four-wheel drive gearbox, vehicle driving system and crops harvester, the inside transmission assembly of four-wheel drive gearbox includes an assembly, two assemblies and triaxial assembly, wherein: the shaft assembly is used for being connected with the clutch and transmitting the power of the engine; the two-shaft assembly is matched with the one-shaft assembly, and the power of the engine is transmitted to the front driving steering axle after speed change; the three-shaft assembly is matched with the two-shaft assembly, the power of the engine after speed change is transmitted to the rear drive steering axle, and front drive and rear drive can be simultaneously realized through the transmission assembly, so that four-wheel drive of the gearbox is realized. Compared with the existing four-wheel drive machine gearbox, the four-wheel drive gearbox is simpler in structure, obviously reduced in overall size and more beneficial to arrangement of four-wheel drive transmission because a four-wheel drive transfer device is not required to be additionally arranged and a differential mechanism is not contained in the four-wheel drive transfer device.

Description

Four-wheel drive gearbox, vehicle power system and crop harvester

Technical Field

The application belongs to the technical field of crop harvesting equipment, and particularly relates to a four-wheel drive gearbox, a vehicle power system and a crop harvester.

Background

The existing crop harvesting equipment, such as a corn harvester, a combine harvester and the like, a stepless speed change walking bridge of the existing crop harvesting equipment is mainly driven by two wheels, only front wheels can be driven, the two-wheel-drive harvester is not strong in climbing capability mainly in mountainous and hilly areas, the operation is easy to skid under muddy environment, and the defects of harvesting speed and the like are influenced.

The four-wheel-drive harvester can provide enough power for equipment under the condition of complex terrain, but has the defects of complex structure and poor stability of the whole machine. The four-wheel drive type four-wheel drive transmission mainly comprises a four-wheel drive transfer device, a transmission case, a chassis, a rear drive transmission, a transmission case and a transmission case.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a four-wheel drive gearbox, vehicle driving system and crops harvester has simplified four-wheel drive continuously variable transmission's structure, has reduced the gearbox cost, also makes the driven arrangement of four-wheel drive simpler and easier simultaneously.

Realize the utility model discloses the technical scheme that the purpose adopted does, a four-wheel drive gearbox, include the box and install at the inside transmission assembly of box, the transmission assembly includes an axle assembly, two axle assemblies and triaxial assembly, wherein:

the shaft assembly comprises a shaft, a first gear, a second gear and a third gear, wherein the first gear, the second gear and the third gear are arranged on the shaft;

the two-shaft assembly comprises a two shaft, a fourth gear, a fifth gear, a sixth gear and a seventh gear, wherein the fourth gear, the fifth gear, the sixth gear and the seventh gear are arranged on the two shaft;

when the gearbox is in a set working gear, the fourth gear is meshed with the first gear, and/or the fifth gear is meshed with the second gear, and/or the sixth gear is meshed with the third gear;

the three-shaft assembly comprises three shafts and eighth gears arranged on the three shafts, one end of each of the three shafts extends out of the box body, a second flange plate is arranged on the end part of each of the three shafts, and the other end of each of the three shafts is fixed on the box body through a bearing;

when the gearbox is in a set working gear, the eighth gear is meshed with the seventh gear.

Preferably, the first flange and the second flange are located on two opposite sides of the box body.

Preferably, the second flange is located on a clutch side of the case, and the first flange is located on an opposite side of the case.

Preferably, the number of teeth of the first gear, the second gear and the third gear is decreased.

Preferably, the number of teeth of the fourth gear, the fifth gear and the sixth gear increases.

Preferably, each gear in the transmission assembly is a spur gear.

Based on the same inventive concept, the utility model also provides a vehicle driving system, including engine, clutch and the gearbox that connects gradually, the gearbox is foretell four-wheel drive gearbox.

Based on the same inventive concept, the utility model also provides a crop harvester, including the chassis with set up the vehicle driving system on the chassis, the vehicle driving system is foretell vehicle driving system.

Preferably, the vehicle power system further comprises a continuously variable transmission assembly, wherein a power input end of the continuously variable transmission assembly is connected with the engine, and a power output end of the continuously variable transmission assembly is connected with the clutch.

Preferably, the continuously variable transmission assembly includes an input pulley, an output pulley, a continuously variable transmission wheel with an adjustable wheel diameter, a clutch pulley, and a continuously variable transmission power unit for adjusting the wheel diameter of the continuously variable transmission wheel, wherein:

the input belt wheel is connected with a flywheel of the engine through a belt;

the input belt wheel is connected with the output belt wheel through a bridge shaft;

one end of the stepless speed change wheel is connected with the output belt wheel through a belt, and the other end of the stepless speed change wheel is connected with the clutch belt wheel through a belt;

the clutch belt wheel is fixedly connected with the clutch;

the stepless speed change power device is connected with the stepless speed change wheel.

According to the above technical scheme, the utility model provides a four-wheel drive gearbox, inside transmission assembly include one axle assembly, two axle assemblies and triaxial assembly, wherein: the shaft assembly is used for being connected with the clutch and transmitting the power of the engine; the two-shaft assembly is matched with the one-shaft assembly, and the power of the engine is transmitted to the front driving steering axle after speed change; the three-shaft assembly is matched with the two-shaft assembly, the power of the engine after speed change is transmitted to the rear drive steering axle, and front drive and rear drive can be simultaneously realized through the transmission assembly, so that four-wheel drive of the gearbox is realized.

Compared with the existing four-wheel drive machine gearbox, the four-wheel drive gearbox is simpler in structure, obviously reduced in overall size and more beneficial to arrangement of four-wheel drive transmission because a four-wheel drive transfer device is not required to be additionally arranged and a differential mechanism is not contained in the four-wheel drive transfer device.

Drawings

Fig. 1 is a schematic perspective view of a four-wheel drive transmission in embodiment 1 of the present invention;

FIG. 2 is a schematic perspective view of a gearbox of a conventional two-wheel-drive harvester;

FIG. 3 is a schematic view of the internal structure of FIG. 2;

fig. 4 is a schematic structural view of an internal transmission assembly in embodiment 2 of the present invention;

FIG. 5 is a schematic structural view of a crop harvester according to embodiment 3 of the present invention;

FIG. 6 is a schematic structural view of the arrangement of the chassis in FIG. 5;

description of reference numerals: 100-gearbox, 110-one shaft assembly, 111-one shaft, 1112-first gear, 113-second gear, 114-third gear, 120-two shaft assembly, 121-two shaft, 122-fourth gear, 123-fifth gear, 124-sixth gear, 125-seventh gear, 130-three shaft assembly, 131-three shaft, 132-eighth gear, 140-box, 150-first flange plate, 160-second flange plate; 100 a-existing two-drive gearbox, 170-differential, 171-spline shaft and 180-output flange plate; 200-a clutch; 300-a stepless speed change assembly, 310-an input belt wheel, 320-an output belt wheel, 330-a stepless speed change wheel, 340-a clutch belt wheel and 350-a stepless speed change power device; 400-an engine; 500-front drive steer axle, 510-front drive shaft; 600-rear drive steering axle, 610-rear drive shaft; 700-a chassis; 800-cab; 900 a-a header apparatus; 900 b-a chopping device; 900 c-elevator feed; 900 d-wheel; 900 e-impurity removing fan; 900 f-cleaning fan; 900 g-impurity double-row impurity auger; 900 h-kernel recovery unit; 900 i-ear elevator; 900 j-a trash removal device; 900 k-ear peeling system; 900 l-welding the grass outlet; 900 m-ear box.

Detailed Description

In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.

Example 1:

the embodiment of the utility model provides a four-wheel drive gearbox is related to, and this four-wheel drive derailleur is applicable to crops harvest machinery, can provide sufficient power for equipping. Referring to fig. 1, the transmission 100 includes a casing 140 and a transmission assembly installed inside the casing 140, the transmission assembly includes a first shaft assembly 110, a second shaft assembly 120 and a third shaft assembly 130, wherein:

the shaft assembly 110 includes a shaft 111, and a first gear 112, a second gear 113 and a third gear 114 disposed on the shaft 111, wherein one end of the shaft 111 extends out of the case 140 for connecting with the clutch 200, and the other end of the shaft is fixed to the case 140 through a bearing. The numbers of teeth of the first gear 112, the second gear 113, and the third gear 114 decrease.

The two-shaft assembly 120 includes a two-shaft 121, and a fourth gear 122, a fifth gear 123, a sixth gear 124 and a seventh gear 125 which are disposed on the two-shaft 121, one end of the two-shaft 121 extends out of the case 140, the end is mounted with a first flange 150, and the other end of the two-shaft 121 is fixed on the case 140 through a bearing. The numbers of teeth of the fourth gear 122, the fifth gear 123, and the sixth gear 124 are increased.

When the gearbox is in a set operating gear (e.g. first gear, second gear, reverse gear, etc.), the fourth gear 122 meshes with the first gear 112, and/or the fifth gear 123 meshes with the second gear 113, and/or the sixth gear 124 meshes with the third gear 114. Preferably, each of the gears is a spur gear.

The three-shaft assembly 130 includes a three shaft 131 and an eighth gear 132 disposed on the three shaft 131, one end of the three shaft 131 extends out of the case 140, the second flange 160 is mounted on the end, and the other end of the three shaft 131 is fixed to the case 140 through a bearing. When the gearbox is in a set operating gear (e.g. first gear, second gear, reverse gear, etc.), eighth gear 132 meshes with seventh gear 125.

In this embodiment, the first flange 150 and the second flange 160 are located on opposite sides of the housing 140 to accommodate the layout of the chassis, specifically, the second flange 160 is located on the clutch side of the housing for connecting to the rear drive steer axle, and the first flange 150 is located on the opposite side of the housing for connecting to the front drive steer axle.

The four-wheel drive transmission can be directly improved from the existing two-wheel drive transmission, the structure of the existing two-wheel drive transmission 100a is shown in fig. 2 and fig. 3, and is also a three-shaft system structure, the clutch 200 is connected with the shaft assembly 110, the differential 170 is arranged on the three shafts 131, and the spline shaft 171 of the differential and the transmission output shaft 180 extend out of the box body 140. In other embodiments, the conventional two-drive transmission 100a may also adopt a four-shaft system structure, the clutch 200 is connected to the first shaft assembly 110, only one transmission gear is disposed on the first shaft assembly 110, the gear configuration of the second shaft assembly is the same as that of the first shaft assembly of the three shaft system, the gear configuration of the third shaft assembly is the same as that of the second shaft assembly of the three shaft system, and so on. The transmissions with the above two structures can be modified into the transmission of the present embodiment, and therefore the structures of the existing transmissions are not described in detail in this application.

The concrete improvement is as follows:

the gears of the original gearbox 100a box body, the first shaft assembly and the second shaft assembly are unchanged, the differential mechanism arranged on the third shaft assembly is removed, and the three shaft assembly is changed into a straight-tooth cylindrical gear with the same tooth number, so that the rest gears of the gearbox are unchanged, and the transmission ratio is unchanged.

The bearing on the opposite side of the clutch of the two shafts is enlarged and replaced by an HR33208J bearing, so that the strength is increased; the two shafts are lengthened (aiming at a four-shaft system structure), and the left end (the opposite side of the clutch) is connected with a flange plate to output transmission to a front axle.

The original differential mechanism of the three shafts is removed and replaced by a straight toothed spur gear with the same tooth number, the three shafts are lengthened, and the right end (clutch end) is connected with a flange plate and outputs transmission to a rear axle.

The improved four-wheel drive gearbox is smooth to use, sufficient in power, stable in operation and free of noise.

Example 2:

based on the same inventive concept, the embodiment provides a vehicle power system which is suitable for a crop harvesting machine and can provide sufficient power for equipment. Referring to fig. 4 and 6, the vehicle powertrain includes an engine 400, a continuously variable transmission assembly 300, a clutch 200, and a transmission 100 connected in sequence, where the transmission 100 adopts the four-wheel drive transmission provided in embodiment 1, and the detailed structure is not described herein.

Referring to fig. 4 and 5, the continuously variable transmission assembly 300 includes an input pulley 310, an output pulley 320, a continuously variable transmission pulley 330 whose wheel diameter is adjustable, a clutch pulley 340, and a continuously variable transmission power unit 350 for adjusting the wheel diameter of the continuously variable transmission pulley, wherein:

the input pulley 310 is connected with a flywheel 410 of the engine through a belt 380, in this embodiment, the belt 380 is a V belt; the input pulley 310 and the output pulley 320 are connected by a bridge shaft 360, and the bridge shaft 360 enables the input pulley 310 and the output pulley 320 to rotate together at the same rotating speed; the continuously variable transmission pulley 330 is fixedly mounted through a continuously variable transmission bracket 370, and the continuously variable transmission pulley 330 has two belt grooves, so that one end is connected with the output pulley 320 through a belt 390a, and the other end is connected with the clutch pulley 340 through a belt 390b, in this embodiment, both the two belts are HK belts, i.e., an upper HK belt and a lower HK belt; the clutch pulley 340 is fixedly connected with the clutch 200; the stepless speed change power device 350 is connected with the stepless speed change wheel 330 and used for adjusting the wheel diameter of the stepless speed change wheel.

Example 3:

based on the same inventive concept, the present embodiment provides a crop harvester, referring to fig. 6, which includes a cab 800, functional components 900, a chassis 700, and a vehicle power system disposed on the chassis 700, wherein the vehicle power system employs the vehicle power system of embodiment 2, and the detailed structure is not described herein again.

Due to the adoption of the four-wheel drive gearbox, the arrangement structure of the corresponding vehicle power system on the chassis 700 is more reasonable, specifically, referring to fig. 6, the engine 400 is longitudinally arranged on the right side (the axis of the engine crankshaft is parallel to the vehicle running direction), and the engine flywheel 410 faces the right rear wheel. Through the middle of the four-wheel drive continuously variable transmission 100, the front drive steering axle 500 is driven by forward transmission, and the rear drive steering axle 600 is driven by backward transmission.

The power transmission principle is as follows:

the power is output by the engine 400, transmitted to the input V-shaped belt pulley 310 through the B-shaped triangular belt, transmitted to the output HK belt pulley 320 through the axle shaft 360, transmitted to the stepless speed change wheel 330 through the upper HK belt 390a, driven to rotate by the stretching of the stepless speed change oil cylinder 350, and realizes stepless speed change through the change of the diameter of the stepless speed change wheel 330. The power drives the clutch 200 and the gearbox 100 through the lower HK belt 390b, is transmitted to the front driving steering axle 500 through the front transmission shaft 510 after being changed in speed through the gearbox 100, and is transmitted to the rear driving steering axle 600 through the rear transmission shaft 610. The front drive steering axle 500 and the rear drive steering axle 600 are provided with a differential mechanism inside, so that the left and right (or front and rear) drive wheels can rotate at different rotating speeds when the automobile turns.

Taking a corn harvester as an example, referring to fig. 5, each functional component 900 in the crop harvester includes: the device comprises a header device 900a, a chopping device 900b, an elevator feeding port 900c, wheels 900d, an impurity removing fan 900e, a cleaning fan 90f, an impurity double-row impurity auger 900g, a grain recovery device 900h, an ear elevator 900i, an impurity removing device 900j, an ear peeling system 900k, a grass outlet welding joint 900l and an ear box 900 m.

The ear elevator 900i is placed centrally on the chassis 700, the direction of the ear elevator 900i is from front to back and obliquely upward, and the impurity removing device 900j and the grass outlet seam 900l are sequentially arranged at the rear end of the ear elevator 12. The header device 900a and the chopping device 2 are arranged in front of the chassis 700, a header packing auger is arranged in the header device 900a, the rear end of the header packing auger is provided with a header packing auger outlet which is welded, and the ear box 900m is arranged at the rear end of the chassis 700.

When the harvester moves forward, corn plants enter the header device 900a, the stalk pulling rollers on the header device 900a clamp the corn stalks and pull the corn stalks downwards, the ears are picked off under the action of the ear picking plates, the ears and the stalks are separated, and the corn stalks after picking are crushed under the action of the chopping device 900 b. The picked corn ears are conveyed to an outlet of a header auger by an ear-shifting chain mechanism and welded together, the ears are shifted into a feeding port 900c of an elevator by a left blade auger and a right blade auger, the ears are lifted to an ear peeling system 900k by the ear elevator 900i, meanwhile, under the action of an impurity removal fan 900e, corn stalks and leaf impurities entering the ear elevator 900i are discharged out of the harvester by a straw outlet welded together 900l along an impurity removal device 900j, the ears are peeled off under the action of a high-low peeling roller of the ear peeling system 900k, the ears with the bracts removed are conveyed to an ear box 900m by the elevator, and the ear collection is finished; the bracteal and sundries stripped off are conveyed to the outside of the harvester by the sundries double-row sundries packing auger 900g in a rotating mode, in the stripping process, grains which possibly fall off a small amount of grains fall into the grain recovery device 900h through the screen, the grains are cleaned by the cleaning fan 900f in the process that the grains fall into the grain recovery device 900h, the bracteal and leaves are discharged out of the harvester after screening, and the grains enter the grain recovery device 900 h.

Through the embodiment, the utility model has the following beneficial effect or advantage:

the utility model provides a four-wheel drive gearbox compares in current four-wheel drive quick-witted gearbox, owing to need not install four-wheel drive transfer device additional to do not contain differential mechanism in the device, consequently this four-wheel drive gearbox's structure is simpler, and whole volume obviously dwindles, more is favorable to four-wheel drive driven arranging. The four-wheel drive of the traditional stepless speed change chassis and the stepless speed change of the mechanical four-wheel drive transmission chassis are realized.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (10)

1. The utility model provides a four-wheel drive gearbox, includes the box and installs the transmission assembly in the box inside which characterized in that: the transmission assembly comprises a first shaft assembly, a second shaft assembly and a third shaft assembly, wherein:

the shaft assembly comprises a shaft, a first gear, a second gear and a third gear, wherein the first gear, the second gear and the third gear are arranged on the shaft;

the two-shaft assembly comprises a two shaft, a fourth gear, a fifth gear, a sixth gear and a seventh gear, wherein the fourth gear, the fifth gear, the sixth gear and the seventh gear are arranged on the two shaft;

when the gearbox is in a set working gear, the fourth gear is meshed with the first gear, and/or the fifth gear is meshed with the second gear, and/or the sixth gear is meshed with the third gear;

the three-shaft assembly comprises three shafts and eighth gears arranged on the three shafts, one end of each of the three shafts extends out of the box body, a second flange plate is arranged on the end part of each of the three shafts, and the other end of each of the three shafts is fixed on the box body through a bearing;

when the gearbox is in a set working gear, the eighth gear is meshed with the seventh gear.

2. The four-wheel drive transmission of claim 1, wherein: the first flange plate and the second flange plate are positioned on two opposite sides of the box body.

3. The four-wheel drive transmission of claim 2, wherein: the second flange is located on a clutch side of the case, and the first flange is located on an opposite side of the case.

4. The four-wheel drive transmission of claim 1, wherein: the number of teeth of the first gear, the second gear and the third gear is decreased progressively.

5. The four-wheel drive transmission of claim 4, wherein: the teeth of the fourth gear, the fifth gear and the sixth gear are increased in number.

6. The four-wheel drive transmission of claim 1, wherein: all gears in the transmission assembly are straight-tooth cylindrical gears.

7. The utility model provides a vehicle driving system, includes engine, clutch and the gearbox that connects gradually which characterized in that: the gearbox is a four-wheel drive gearbox according to any one of claims 1 to 6.

8. A crop harvester comprising a chassis and a vehicle power system disposed on the chassis, characterized in that: the vehicle powertrain system is the vehicle powertrain system of claim 7.

9. A crop harvester as in claim 8, further comprising: the vehicle power system further comprises a stepless speed change assembly, wherein the power input end of the stepless speed change assembly is connected with the engine, and the power output end of the stepless speed change assembly is connected with the clutch.

10. A crop harvester as in claim 9, further comprising: the stepless speed change assembly comprises an input belt wheel, an output belt wheel, a stepless speed change wheel with adjustable wheel diameter, a clutch belt wheel and a stepless speed change power device for adjusting the wheel diameter of the stepless speed change wheel, wherein:

the input belt wheel is connected with a flywheel of the engine through a belt;

the input belt wheel is connected with the output belt wheel through a bridge shaft;

one end of the stepless speed change wheel is connected with the output belt wheel through a belt, and the other end of the stepless speed change wheel is connected with the clutch belt wheel through a belt;

the clutch belt wheel is fixedly connected with the clutch;

the stepless speed change power device is connected with the stepless speed change wheel.

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