CN115489303A - Tractor transmission system with bending and twisting functions - Google Patents

Abstract

A tractor drive train with waist bending and waist twisting functions, including a front axle transmission device, a shuttle reversing transmission device, a waist bending mechanism hinge device, a main gear shifting transmission device, a section shifting transmission device, and a rear axle transmission device and power output transmission device, a shaft is installed in the front axle transmission device to take power from the engine, the hinge device of the waist-bending and twisting mechanism is connected with the shuttle reversing transmission device through two shafts and seven shafts, and the shuttle reversing transmission device passes through Three shafts and eight shafts are connected with the main transmission shifting device, the main transmission shifting device is connected with the section shifting transmission through four shafts, six shafts and eight shafts, and the section shifting transmission is connected with the rear axle through two shafts The transmission device is connected, and the rear axle transmission device is connected with the power output transmission device through two shafts. The tractor transmission system of the invention has many gears and speeds, has a compact, firm and reliable structure, high transmission efficiency, and convenient gear shifting, and can meet the requirements of different working conditions.

Description

A tractor drive train with waist bending and waist twisting functions

technical field

The invention belongs to the technical field of tractors, and in particular relates to a tractor transmission system with the functions of waist bending and waist twisting.

Background technique

Hilly and mountainous areas are important fruit, vegetable, grain and oil production bases in my country. The arable land has the characteristics of large undulations, steep and curved slopes, and narrow machine farming roads. The complexity and diversity of hilly and mountainous areas make mechanized operations difficult, poor in quality, and easy to overturn machinery. And other issues. At present, the most widely used hilly and mountainous power machines in my country are walking tractors, micro-tillers and small four-wheel low-gap tractors. The above-mentioned machines have poor adaptability to complex hilly and mountainous areas, and at the same time, the quality of operation is difficult to meet the use requirements.

There are multi-gear and high-efficiency improvements to the drive train used in tractors. For example, the patent of the authorized notification number CN211054920U discloses a tractor drive train structure, which connects the front axle and the rear axle through a steering hinge mechanism. The front end is connected with the engine, and the engine power is transmitted to the tractor drive train through the shaft. The steering hinge mechanism can deflect left or right along the vertical axis to make the tractor drive left or right. The front axle and the rear axle can also move horizontally The axis swing angle can realize 16F+4R tractor drive train. The application publication number CN106740078A discloses a tractor drive mechanism, and its gearbox has 12 forward gears and 12 reverse gears. With the promotion of comprehensive mechanization and the promotion of "machine-friendly" transformation of hills and mountains, the demand for agricultural mechanization in hills and mountains will be released at an accelerated rate. The existing tractor drive train still cannot meet the complex hills and mountains. The structure is not compact.

Contents of the invention

The purpose of the present invention is to provide a tractor drive train with waist bending and waist twisting functions, which not only has 16 forward gears and 16 reverse gears, but also has many gear speeds, can meet the needs of different working conditions, and has a compact and firm structure Reliable, high transmission efficiency, convenient shifting, reasonable speed distribution.

The technical scheme that the present invention adopts in order to achieve the above object is:

A tractor transmission system with waist bending and waist twisting functions, comprising a front axle transmission device, a shuttle reversing transmission device, a waist folding and twisting mechanism hinge device hingedly arranged between the front axle transmission device and the shuttle reversing transmission device, Main gear shift gear, range shift gear, rear axle gear and power take-off gear,

A shaft used to connect with the engine is installed in the front axle transmission;

There are seven shafts installed in the hinge device of the waist-bending and twisting mechanism;

There are two shafts, five shafts and ten shafts installed in the shuttle reversing transmission device;

There are three shafts, six shafts and eight shafts installed in the main gear shift transmission device;

Four shafts are installed in the range shift transmission;

There are nine shafts installed in the power output transmission device;

The hinge device of the waist-bending and twisting mechanism is connected with the shuttle reversing transmission device through two axes and seven axes;

The shuttle reversing transmission device is connected with the main transmission shifting transmission device through three shafts and eight shafts;

The main gear shift transmission device is connected with the range shift transmission device through four shafts, six shafts and eight shafts;

The range shift transmission device is connected with the rear axle transmission device through two shafts;

The rear axle transmission is connected with the power output transmission through two shafts.

As a preferred solution of the present invention, a first large gear and a first pinion mounted on seven shafts and engaged with the first large gear are arranged in the transmission device of the front axle.

As a preferred solution of the present invention, F-R reversing synchronizer, forward gear driving gear, reverse gear driving gear, reverse gear idler gear, reverse gear driven gear and forward gear driven gear are arranged in the shuttle reversing transmission device. ,in:

The drive gear for forward gear is installed on the three shafts and connected with the F-R reversing synchronizer;

The reverse driving gear is installed concentrically with the second shaft and connected with the F-R reversing synchronizer;

The forward gear driven gear is fixedly connected to the fifth shaft and meshes with the forward gear driving gear;

The reverse driven gear is fixedly connected to the fifth shaft;

The reverse gear idler is fixedly connected on the tenth axle, and the reverse gear idler is meshed with the reverse gear driving gear and the reverse gear driven gear simultaneously.

As a preferred solution of the present invention, the main gear shifting transmission device is provided with I gear driving gear, II gear driving gear, III gear driving gear, IV gear driving gear, I gear driven gear, II gear driven gear, Ⅲ gear driven gear, Ⅳ gear driven gear, Ⅰ-Ⅱ shift synchronizer and Ⅲ-Ⅳ shift synchronizer, of which:

The driving gear of gear I and the driving gear of gear II are fixedly connected to the three shafts respectively;

The driving gear of gear III is installed on the three shafts with the coaxial center line, and is connected with the gear shift synchronizer of III-IV;

The driving gear of gear IV is fixedly connected to the four shafts and connected with the gear shift synchronizer of III-IV;

The driven gear of gear I and the driven gear of gear II are respectively sleeved on the six shafts with the center line holes of the same axis, and the driven gear of gear I and gear II are respectively connected with the gear synchronizer of I-II;

The driven gear of gear III and the driven gear of gear IV are fixedly connected to the six-axis S6 respectively;

The driving gear of gear I meshes with the driven gear of gear I, the driving gear of gear II meshes with the driven gear of gear II, the driving gear of gear III meshes with the driven gear of gear III, and the driving gear of gear IV meshes with the driven gear of gear IV. engage.

As a preferred solution of the present invention, the range shifting transmission device is provided with an L gear driving gear, an L gear driven gear, an M gear driving gear, an M gear driven gear, an H-L gear shift engagement sleeve, and an M-LL gear. Gear shift engagement sleeve, in which:

The L gear driving gear and the M gear driving gear are fixedly connected to the four-axis S4 respectively;

The L gear driven gear and the M gear driven gear are installed coaxially with the eight-axis S8 respectively;

The H-L gear shift engagement sleeve is connected with the six shafts, the L gear driven gear is connected with the H-L gear shift engagement sleeve, and the M gear driven gear is connected with the M-LL gear shift engagement sleeve.

As a preferred solution of the present invention, the rear axle transmission device is provided with a second small bevel gear on eight shafts, and meshes with the second small bevel gear to transmit power to the differential gear assembly.

As a preferred solution of the present invention, a 720rpm driving gear, a 720rpm driven gear, a 540rpm driving gear, a 540rpm driven gear, and a 540-720rpm shift engagement sleeve are arranged in the power output transmission device, wherein:

720rpm driving gear and 540rpm driving gear are fixed on the two shafts;

The 720rpm driven gear and the 540rpm driven gear are installed coaxially with the nine shafts, and are respectively connected to the 540-720rpm gearshift meshing sleeve;

The 720rpm driving gear is meshed with the 720rpm driven gear, the 540rpm driving gear is meshed with the 540rpm driven gear, and the nine shafts are connected to the power output shaft head.

As a preferred solution of the present invention, a crawler gear transmission device is also provided in the range shift transmission device, and the LL gear driving gear, the LL gear middle bull gear, the LL gear middle pinion gear, and the LL gear gear are installed in the crawler gear transmission device. Driven gear and eleven shafts, including:

The LL gear driving gear and the L gear driven gear are fixed double gears, and are installed on the same axis as the eight-axis S8;

The eleventh axis is parallel to the center line of the second axis and the eighth axis, and is arranged in a three-axis space;

The middle gear of LL gear and the middle pinion gear of LL gear are fixedly connected on the eleventh shaft;

The LL gear driven gear is installed on the coaxial center line of the eight-axis, the hole is sleeved on the eight-axis, and connected with the M-LL gear shift mesh;

The LL gear driving gear is meshed with the LL gear intermediate bull gear, and the LL gear intermediate pinion is meshed with the LL gear driven gear.

As a preferred solution of the present invention, one-axis, two-axis, three-axis and four-axis coaxial center lines are arranged;

5-axis, 6-axis, 7-axis, 8-axis coaxial center line setting, and parallel to 1-axis, 2-axis, 3-axis, 4-axis axis center line;

Nine axes are parallel to the axes of 1st, 2nd, 3rd and 4th axes, and different from 5th, 6th, 7th and 8th axes; The axes are separated on both sides of the left and right symmetry planes of the tractor.

As a preferred solution of the present invention, from the rear axle of the tractor to the engine direction, the tenth axis is located on the left side of the left and right symmetry plane of the tractor, and the eleventh axis is located on the right side of the left and right symmetry plane of the tractor.

Beneficial effects of the present invention:

1. The transmission system of the present invention adopts a planar two-axis arrangement, and the standard configuration adopts (1+1)×4×4 transmission route, which can realize 16 forward gears and 16 reverse gears, with the function of shuttle reversing, The optional configuration adopts (1+1)×4×3 transmission route, which can realize 12 forward gears and 12 reverse gears. wide.

2. The transmission system of the present invention independently sets a creeping gear transmission device in the section shifting transmission device, adopts the external meshing gear transmission mode, has a reliable structure, can be selected as an independent module, and can realize ultra-low speed operation of the crawling gear The working conditions can not only meet the speed requirements of various hilly and mountainous tractors at home and abroad, but at the same time, in the H section gear, the four main transmission gears are all a pair of gear meshing transmission, which greatly improves the performance of the tractor. work efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of a tractor drive train with waist bending and waist twisting functions provided by the embodiment;

Fig. 2 is a schematic diagram of the distribution structure of various axes of a tractor drive train with waist-bending and waist-twisting functions provided by the embodiment, viewed from the rear axle of the tractor toward the engine.

Marks in the figure: 1. Front axle transmission device, 2. Hinge device of waist-folding and twisting mechanism, 3. Shuttle reversing transmission device, 4. Main gear shifting transmission device, 5. Section shifting transmission device, 6. Crawling Gear transmission device, 7. Rear axle transmission device, 8. Power output transmission device, 9. Forward gear driving gear, 10. I gear driving gear, 11. II gear driving gear, 12. III gear driving gear, 13, IV gear Driving gear, 14, I gear driven gear, 15, II gear driven gear, 16, III gear driven gear, 17, IV gear driven gear, 18, L gear driving gear, 19, L gear driven gear, 20, LL file driving gear, 21, LL file middle large gear, 22, LL file middle pinion gear, 23, LL file driven gear, 24, M file driving gear, 25, M file driven gear, 26, first Small bevel gear, 27, the first large bevel gear, 28, reverse gear driving gear, 29, reverse gear idler gear, 30, reverse gear driven gear, 31, forward gear driven gear, 32, 720rpm driving gear, 33, 720rpm driven gear, 34,540rpm driving gear, 35,540rpm driven gear, 36, the second small bevel gear, 37, the second large bevel gear.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. In the description of the present invention, it should be noted that, unless otherwise specified, the meaning of "multiple" is two or more; The orientation or positional relationship indicated by "bottom", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the drawings The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present invention .

The present invention is to provide an embodiment of a tractor transmission system with waist bending and waist twisting functions. 16F+16R tractor gearbox transmission with shuttle reversing, synchronous shifting and creeping gears.

As shown in Fig. 1 to Fig. 2, the tractor transmission system with waist folding and waist twisting functions of this embodiment includes a front axle transmission device 1, a shuttle reversing transmission device 3, and a front axle transmission device 1 and a shuttle reversing transmission device hingedly arranged on the front axle transmission device 1 and a shuttle reversing transmission device. To the waist-bending and twisting mechanism hinge device 2 between the transmission device 3 , the main gear shift transmission device 4 , the section shift transmission device 5 , the crawling gear transmission device 6 , the rear axle transmission device 7 and the power output transmission device 8 .

Wherein, one shaft S1 for being connected with the engine is installed in the front axle transmission device 1, seven shafts S7 are installed in the hinge device 2 of the folding and twisting mechanism, two shafts S2, Five-axis S5 and ten-axis S10, three-axis S3, six-axis S6 and eight-axis S8 are installed in the main transmission shifting device 4, four-axis S4 is installed in the section shifting device 5, and the power output transmission device Nine-axis S9 is installed in 8.

The input end of the front axle transmission device 1 is connected with the tractor engine, the output end of the front axle transmission device 1 is connected with the hinge device 2 of the waist bending mechanism through the hinge mechanism, and the hinge device 2 of the waist bending mechanism is connected with the shuttle through the two-axis S2 and the seven-axis S7. The shuttle-type reversing transmission device 3 is connected with the main transmission shifting transmission device 4 through the three-axis S3 and eight-axis S8, and the main transmission shifting transmission device 4 is connected through the four-axis S4, six-axis S6 and eight-axis The shaft S8 is connected with the range shift transmission device 5, the range shift transmission device 5 is connected with the rear axle transmission device 7 through the second shaft S2 and the first bevel gear 26, and the rear axle transmission device 7 is connected with the power output through the second shaft S2 The transmission device 8 is connected.

A shaft S1, the first small bevel gear 26, the first large bevel gear 27, the first differential assembly and the first final drive assembly are installed in the front axle transmission 1, and one end of the shaft S1 is connected to the engine. The other end is connected with the upper universal joint transmission shaft assembly in the hinge device 2 of the bending and twisting mechanism, the first small bevel gear 26 and the first large bevel gear 27 mesh with each other, and the first small bevel gear 26 is installed on the seven-axis S7 , the left and right first final drive assemblies are respectively connected to the first differential assembly, and the other end of the first final drive assembly is connected to the left and right front wheel tires.

The seven-axis S7, the upper and lower universal joint drive shaft assemblies, the waist-folding hinge mechanism and the waist-twisting hinge mechanism are installed in the hinge device 2 of the waist-bending and twisting mechanism. The waist hinge mechanism is connected. One end of the seven-axis S7 is connected to the first small bevel gear 26 in the front axle transmission device 1, and the other end is connected to the lower universal joint drive shaft assembly. The hinge mechanism is connected, and the two universal joint transmission shaft assemblies are horizontally installed inside the twisting and folding hinge mechanism. The other end of the upper universal joint transmission assembly is connected with the second shaft S2, and the other end of the lower universal joint transmission Shaft S8 is connected.

Two shafts S2, F-R reversing synchronizer, forward gear driving gear 9, reverse gear driving gear 28, reverse gear idler gear 29, reverse gear driven gear 30, and forward gear driven gear 31 are installed in the shuttle reversing transmission device 3 And the five-axis S5 and the ten-axis S10, wherein, the two-axis S2 passes through the shuttle reversing transmission device 3, the forward gear drive gear 9 is fixedly connected to the three-axis S3, and the three-axis S3 and the two-axis S2 are installed on the same axis. No contact, the other end of the forward driving gear 9 is connected with the F-R reversing synchronizer, the reverse driving gear 28 is coaxially installed with the two shafts S2, the hole is sleeved on the two shafts S2, and the other end is connected with the F-R reversing synchronizer, The five-axis S5 and the eight-axis S8 are coaxially installed, the axis of the five-axis S5 is on the same vertical plane as the two-axis S2, and is parallel, and the forward gear driven gear 31 is fixed on the five-axis S5, and is connected to the forward gear. The driving gear 9 is meshed, the reverse gear driven gear 30 is fixedly connected to the five-axis S5, the reverse idler gear 29 is fixedly connected to the ten-axis S10, and the ten-axis S10 is respectively parallel to the axes of the eighth-axis S8 and the second-axis S2. And the space is arranged in three axes, and the gear idler gear 29 is meshed with the reverse gear driving gear 28 and the reverse gear driven gear 30 simultaneously.

Three-shaft S3, six-shaft S6, eight-shaft S8, I gear driving gear 10, II gear driving gear 11, III gear driving gear 12, IV gear driving gear 13, and I gear driven gear are installed in the main gear shift transmission device 4 Gear 14, second gear driven gear 15, third gear driven gear 16, fourth gear driven gear 17, and I-II shift synchronizer, III-IV shift synchronizer, wherein, the first gear driving gear 10 and the second gear The driving gear 11 of first gear is fixed on the three-axis S3 respectively, the driving gear 12 of third gear is installed on the three-axis S3 coaxially, and is connected with the gear shift synchronizer of III-IV, and the driving gear of fourth gear 13 is fixed on the four-axis On S4, and connected with III-IV shift synchronizer, the six-axis S6 and eight-axis S8 are newly installed on the same axis, and the I-speed driven gear 14 and the II-speed driven gear 15 are respectively coaxially sleeved on the six-axis On S6, the first gear driven gear 14 and the second gear driven gear 15 are respectively connected with the I-II shift synchronizer, the third gear driven gear 16 and the fourth gear driven gear 17 are fixedly connected to the six-axis S6 respectively, The driving gear 10 of the first gear meshes with the driven gear 14 of the first gear, the driving gear 11 of the second gear meshes with the driven gear 15 of the second gear, the driving gear 12 of the third gear meshes with the driven gear 16 of the third gear, and the driving gear of the fourth gear 13 It meshes with the driven gear 17 of the fourth gear.

Four-axis S4, L gear driving gear 18, L gear driven gear 19, crawling gear gear 6, M gear driving gear 24, M gear driven gear 25 and H-L gear shifting are installed in the section shifting transmission device 5 Engagement sleeve, M-LL gear shift engagement sleeve, four-axis S4 and two-axis S2 are installed on the same axis, the four-axis S4 hole is sleeved on the second shaft S2, L-range driving gear 18 and M-speed driving gear 24 are fixed respectively On the four-axis S4, the L gear driven gear 19 and the M gear driven gear 25 are respectively installed on the coaxial center line of the eight-axis S8, the holes are set on the eight-axis S8, and the H-L gear shifting sleeve is connected with the six-axis S6 , L gear driven gear 19 is connected with H-L gear gear shift engagement sleeve, and M gear driven gear 25 is connected with M-LL gear shift gear engagement sleeve.

In this embodiment, the creeping gear transmission device 6 is installed as an independent module unit inside the range shifting transmission device 5, and the LL gear driving gear 20, the LL gear intermediate gear 21, and the LL gear are installed in the crawling gear transmission device 6. Intermediate pinion 22, LL gear driven gear 23 and eleven shafts S11, wherein, LL gear driving gear 20 and L gear driven gear 19 are solidly connected double gears, installed on the same axis as eight shafts S8, LL gear The middle large gear 21 and the LL gear middle pinion 22 are fixedly connected to the eleventh shaft S11, the eleventh shaft S11 is parallel to the axis center lines of the second shaft S2 and the eighth shaft S8, and the space is arranged and installed in three axes, and the LL gear driven gear 23 It is installed on the same axis as the eight-axis S8, the hole sleeve is on the eight-axis S8, and it is connected with the M-LL shift gear sleeve, the LL gear driving gear 20 and the LL gear middle gear 21 are meshed and connected, and the LL gear middle The pinion 22 is meshed with the driven gear 23 of the LL gear.

Two shafts S2 and the second small bevel gear 36, the second large bevel gear 37, the second differential assembly and the second final drive assembly are installed in the rear axle transmission 7, wherein one end of the two shafts S2 is connected to the power The output transmission device 8 is connected, the second small bevel gear 36 meshes with the second large bevel gear 37, the second small bevel gear 36 is installed on the eight-axis S8, and the left and right second final drive assemblies are respectively connected with the second differential The other end of the second final drive assembly is connected to the left and right rear tires.

Two shafts S2, 720rpm driving gear 32, 720rpm driven gear 33, 540rpm driving gear 34, 540rpm driven gear 35, and nine shafts S9, 540-720rpm gear shift engagement sleeve are installed in the power output transmission device 8, wherein, 720rpm The driving gear 32 and the 540rpm driving gear 34 are fixedly connected on the two-axis S2, the 720rpm driven gear 33 and the 540rpm driven gear 35 are installed on the coaxial center line of the nine-axis S9, and the holes are sleeved on the nine-axis S9, and respectively connected to the 540- The 720rpm gearshift meshing sleeve is connected, the 720rpm driving gear 32 is meshed with the 720rpm driven gear 33, the 540rpm driving gear 34 is meshed with the 540rpm driven gear 35, and the nine-axis S9 is arranged parallel to and perpendicular to the axis of the second axis S2. The shaft S9 is connected to the power output shaft head.

In this embodiment, the following conditions are met between the axes: one-axis S1, two-axis S2, three-axis S3, four-axis S4 are coaxial, five-axis S5, six-axis S6, seven-axis S7, and eight-axis S8 are coaxial The center line is parallel to the center line of the first axis S1, the second axis S2, the third axis S3, and the fourth axis S4, and is on the vertical plane of the center of the tractor. The axis line of the four-axis S4 is parallel and on the vertical plane of the center of the tractor, but it is different from the axis line of the five-axis S5, six-axis S6, seven-axis S7, and eight-axis S8. Viewed from the rear axle of the tractor to the engine as a whole, ten The axis S10 and the eleventh axis S11 are located on both sides of the tractor's left-right symmetry plane, wherein the ten-axis S10 is located on the left side of the tractor's left-right symmetry plane, and the eleventh axis S11 is located on the right side of the tractor's left-right symmetry plane.

The front axle and the rear axle respectively have a differential function, with stronger adaptability, more gears, high transmission efficiency, low manufacturing cost, 16F+16R tractor gearbox transmission with shuttle reversing, synchronous shifting, and crawling gears device.

In the transmission system of this embodiment, the differential gear assembly of the same parts can be used in the front axle transmission device 1 and the rear axle transmission device 7, and parts such as the final drive assembly, and the gearbox adopts the same diameter of the front and rear wheels The tires increase the traction force of the tractor with the increased ground contact area. At the same time, the front and rear axles are directly connected through the upper and lower universal joint drive shaft assemblies, which can effectively avoid the tire wear problem caused by the tire lead rate; the gearbox is equipped with a bent waist The hinge device 2 of the waist twisting mechanism can realize turning with a smaller turning radius, and is more suitable for complex working conditions in hilly and mountainous areas.

The transmission system of the present embodiment can realize 16 forward gears and 16 reverse gears, and the speed of forward gears and reverse gears covers a wide range, and 12 forward gears and 12 reverse gears can be realized by removing the 6 modules of the crawling gear transmission device. It meets the speed requirements of various hilly and mountainous tractor operating conditions at home and abroad. At the same time, when the gearbox is in the H section gear, the four main transmission gears are all engaged with a pair of gears, which greatly improves the tractor's operating efficiency.

The main body of the internal shaft system of the main and auxiliary gearboxes is arranged in a two-shaft layout. The spatial layout structure is very compact, simple and convenient, effectively saving space, and reducing the volume of the gearbox.

When carrying out power transmission, in the main gear shift transmission device 4, the first gear driving gear 10, the second gear driving gear 11, the third gear driving gear 12, the fourth gear driving gear 13, the first gear driven gear 14, and the second gear are installed. Driven gear 15, III gear driven gear 16, IV gear driven gear 17, and I-II shift synchronizer, III-IV shift synchronizer can form four main transmission gears, respectively I gear, Ⅱ gear, Ⅲ gear, Ⅳ gear, each shift synchronizer controls two gears.

Install the L gear driving gear 18, the L gear driven gear 19, the creeping gear gear 6, the M gear driving gear 24, the M gear driven gear 25 and the H-L gear shift engagement sleeve, the M gear in the section shifting transmission device 5. - The LL gear shifting sleeve can form four auxiliary transmission gears, which are respectively LL gear, L gear, M gear, and H gear, and each gear shifting gear sleeve controls two gears.

The creep gear transmission 6 is installed in the range shift transmission 5 as an independent module, the L gear drive gear 18 is used as the power input end of the crawl gear, and the LL gear drive gear 20 and the L gear driven gear 19 are fixedly connected to each other. Gears, the power is sequentially transmitted to the eight gears through the L gear driving gear 18, the L gear driven gear 19, the LL gear intermediate gear 21, the LL gear intermediate pinion gear 22, the LL gear driven gear 23, and the M-LL gear shift meshing sleeve. On the axis S8, the eight-axis S8 is divided into two branches, the front and the rear, and the power is transmitted through the front and rear tires. The creeping gear transmission device 6 cleverly uses the L gear pair as the input end, and has a compact layout and a simple structure. Inside the body, it can be selected as an independent module. In the optional configuration, the crawler gear transmission device 6 can be omitted to realize 12 forward gears and 12 reverse gears.

When using:

Forward 1st gear: F-R reversing synchronizer combined with F gear, Ⅰ-II gear shift synchronizer combined with Ⅰ gear, M-LL gear shift meshing sleeve combined with LL gear, the engine power is from one shaft S1→upper universal joint transmission shaft Cheng→two-axis S2→F-R reversing synchronizer→forward drive gear 9→three-axis S3→Ⅰ gear driving gear 10→Ⅰ gear driven gear 14→Ⅰ-Ⅱ shift synchronizer→six-axis S6→Ⅳ gear slave Driving gear 17 → Ⅳ gear driving gear 13 → four-axis S4 → L gear driving gear 18 → L gear driven gear 19 → LL gear intermediate large gear 21 → LL gear intermediate pinion gear 22 → LL gear driven gear 23 → M- LL gear shift mesh sleeve → eight-axis S8 → small bevel gears on front and rear axles → front and rear axle transmissions.

2nd gear forward: F-R reversing synchronizer combined with F gear, Ⅰ-II gear shift synchronizer combined with II gear, M-LL gear shift meshing sleeve combined with LL gear, the engine power is from one shaft S1→upper universal joint drive shaft Cheng→two-axis S2→F-R reversing synchronizer→forward drive gear 9→three-axis S3→second gear driving gear 11→second gear driven gear 15→Ⅰ-Ⅱ shift synchronizer→six-axis S6→Ⅳ gear slave Driving gear 17 → Ⅳ gear driving gear 13 → four-axis S4 → L gear driving gear 18 → L gear driven gear 19 → LL gear intermediate large gear 21 → LL gear intermediate pinion gear 22 → LL gear driven gear 23 → M- LL gear shift mesh sleeve → eight-axis S8 → small bevel gears on front and rear axles → front and rear axle transmissions.

3 forward gears: F-R reversing synchronizer combined with F gear, III-IV gear shift synchronizer combined with III gear, M-LL gear shift meshing sleeve combined with LL gear, the engine power is from one shaft S1→upper universal joint transmission shaft Cheng→two-axis S2→F-R reversing synchronizer→forward drive gear 9→three-axis S3→Ⅲ-Ⅳ shift synchronizer→Ⅲ gear 12→Ⅲ driven gear 16→six-axis S6→Ⅳ gear slave Driving gear 17 → Ⅳ gear driving gear 13 → four-axis S4 → L gear driving gear 18 → L gear driven gear 19 → LL gear intermediate large gear 21 → LL gear intermediate pinion gear 22 → LL gear driven gear 23 → M- LL gear shift mesh sleeve → eight-axis S8 → small bevel gears on front and rear axles → front and rear axle transmissions.

4 forward gears: F-R reversing synchronizer combined with F gear, III-IV gear shift synchronizer combined with IV gear, M-LL gear shift meshing sleeve combined with LL gear, the engine power is from one shaft S1→upper universal joint transmission shaft Cheng→two-axis S2→F-R reversing synchronizer→forward drive gear 9→three-axis S3→Ⅲ-Ⅳshift synchronizer→IV drive gear 13→four-axis S4→L drive gear 18→L drive driven Gear 19 → LL file middle bull gear 21 → LL file middle pinion gear 22 → LL file driven gear 23 → M-LL file gear shift engagement sleeve → eight-axis S8 → front and rear axle small bevel gears → front and rear axle drive.

5 forward gears: F-R reversing synchronizer combined with F gear, I-II gear shift synchronizer combined with I gear, H-L gear shifting sleeve combined with L gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→Forward driving gear 9→Three-axis S3→I gear driving gear 10→I gear driven gear 14→Ⅰ-II shift synchronizer→six-axis S6→IV gear driven gear 17 → IV gear driving gear 13 → four-axis S4 → L gear driving gear 18 → L gear driven gear 19 → H-L gear shift mesh sleeve → eight-axis S8 → front and rear axle pinion bevel gears → front and rear axle transmissions.

6 forward gears: F-R reversing synchronizer combined with F gear, I-II gear shift synchronizer combined with II gear, H-L gear shift mesh sleeve combined with L gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→Forward drive gear 9→Three-axis S3→II gear drive gear 11→II gear driven gear 15→Ⅰ-II shift synchronizer→six-axis S6→IV gear driven gear 17 → IV gear driving gear 13 → four-axis S4 → L gear driving gear 18 → L gear driven gear 19 → H-L gear shift mesh sleeve → eight-axis S8 → front and rear axle pinion bevel gears → front and rear axle transmissions.

Forward 7 gears: F-R reversing synchronizer combined with F gear, III-IV gear shift synchronizer combined with III gear, H-L gear shift mesh sleeve combined with L gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→Forward drive gear 9→Three-axis S3→Ⅲ-Ⅳ gear shift synchronizer→Ⅲ gear 12→Ⅲ driven gear 16→six-axis S6→Ⅳ driven gear 17 → IV gear driving gear 13 → four-axis S4 → L gear driving gear 18 → L gear driven gear 19 → H-L gear shift mesh sleeve → eight-axis S8 → front and rear axle pinion bevel gears → front and rear axle transmissions.

Forward 8 gears: F-R reversing synchronizer combined with F gear, III-IV gear shift synchronizer combined with IV gear, H-L gear shift mesh sleeve combined with L gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→forward drive gear 9→three-axis S3→Ⅲ-Ⅳshift synchronizer→IV drive gear 13→four-axis S4→L drive gear 18→L drive driven gear 19 → H-L shift gear sleeve → eight-axis S8 → small bevel gears on the front and rear axles → front and rear axle transmissions.

9 forward gears: F-R reversing synchronizer combined with F gear, Ⅰ-II gear shift synchronizer combined with I gear, M-LL gear shift meshing sleeve combined with M gear, the engine power is from one shaft S1→upper universal joint drive shaft Cheng→two-axis S2→F-R reversing synchronizer→forward drive gear 9→three-axis S3→Ⅰ gear driving gear 10→Ⅰ gear driven gear 14→Ⅰ-Ⅱ shift synchronizer→six-axis S6→Ⅳ gear slave Driving gear 17 → Ⅳ gear driving gear 13 → four-axis S4 → M gear driving gear 24 → M gear driven gear 25 → M-LL gear shift meshing sleeve → eight-axis S8 → front and rear axle small bevel gears → front and rear axle transmission .

10 forward gears: F-R reversing synchronizer combined with F gear, I-II gear shift synchronizer combined with II gear, M-LL gear shift meshing sleeve combined with M gear, the engine power is from one shaft S1→upper universal joint drive shaft Cheng→two-axis S2→F-R reversing synchronizer→forward drive gear 9→three-axis S3→second gear driving gear 11→second gear driven gear 15→Ⅰ-Ⅱ shift synchronizer→six-axis S6→Ⅳ gear slave Driving gear 17 → Ⅳ gear driving gear 13 → four-axis S4 → M gear driving gear 24 → M gear driven gear 25 → M-LL gear shift meshing sleeve → eight-axis S8 → front and rear axle small bevel gears → front and rear axle transmission .

11 forward gears: F-R reversing synchronizer combined with F gear, III-IV gear shift synchronizer combined with III gear, M-LL gear shift meshing sleeve combined with M gear, the engine power is from one shaft S1→upper universal joint drive shaft Cheng→two-axis S2→F-R reversing synchronizer→forward drive gear 9→three-axis S3→Ⅲ-Ⅳ shift synchronizer→Ⅲ gear 12→Ⅲ driven gear 16→six-axis S6→Ⅳ gear slave Driving gear 17 → Ⅳ gear driving gear 13 → four-axis S4 → M gear driving gear 24 → M gear driven gear 25 → M-LL gear shift meshing sleeve → eight-axis S8 → front and rear axle small bevel gears → front and rear axle transmission .

12 forward gears: F-R reversing synchronizer combined with F gear, III-IV gear shift synchronizer combined with IV gear, M-LL gear shift meshing sleeve combined with M gear, the engine power is from one shaft S1→upper universal joint drive shaft Cheng→two-axis S2→F-R reversing synchronizer→forward drive gear 9→three-axis S3→Ⅲ-Ⅳ shift synchronizer→IV drive gear 13→four-axis S4→M drive gear 24→M drive driven Gear 25 → M-LL gear shift mesh sleeve → eight-axis S8 → front and rear axle bevel gears → front and rear axle transmissions.

13 forward gears: F-R reversing synchronizer combined with F gear, Ⅰ-II gear shift synchronizer combined with I gear, H-L gear shift mesh sleeve combined with H gear, the engine power is from one shaft S1→upper universal joint drive shaft assembly→ Two-axis S2→F-R reversing synchronizer→Forward drive gear 9→Three-axis S3→I gear drive gear 10→I gear driven gear 14→Ⅰ-II shift synchronizer→six-axis S6→H-L shift gear meshing Set → eight-axis S8 → front and rear axle pinion gears → front and rear axle transmission.

Forward 14 gears: F-R reversing synchronizer combined with F gear, I-II gear shift synchronizer combined with II gear, H-L gear shift mesh sleeve combined with H gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→Forward drive gear 9→Three-axis S3→II gear driving gear 11→II gear driven gear 15→Ⅰ-II shift synchronizer→six-axis S6→H-L shift gear meshing Set → eight-axis S8 → front and rear axle pinion gears → front and rear axle transmission.

15 forward gears: F-R reversing synchronizer combined with F gear, III-IV gear shift synchronizer combined with III gear, H-L gear shift mesh sleeve combined with H gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→forward drive gear 9→three-axis S3→Ⅲ-Ⅳ shift synchronizer→Ⅲ gear 12→Ⅲ driven gear 16→sixth shaft S6→H-L gear shift meshing Set → eight-axis S8 → front and rear axle pinion gears → front and rear axle transmission.

16 forward gears: F-R reversing synchronizer combined with F gear, III-IV gear shift synchronizer combined with IV gear, H-L gear shift mesh sleeve combined with H gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→forward drive gear 9→three-axis S3→Ⅲ-Ⅳ shift synchronizer→Ⅳ gear driving gear 13→Ⅳ driven gear 17→six-axis S6→H-L shift gear meshing Set → eight-axis S8 → front and rear axle pinion gears → front and rear axle transmission.

Reverse 1 gear: F-R reversing synchronizer combined with R gear, Ⅰ-II gear shift synchronizer combined with Ⅰ gear, M-LL gear shift meshing sleeve combined with LL gear, the engine power is from one shaft S1→upper universal joint drive shaft Cheng→two-axis S2→F-R reversing synchronizer→reverse driving gear 28→reverse idler gear 29→reverse driven gear 30→five-axis S5→forward driven gear 31→forward driving gear 9→three-axis S3→I gear driving gear 10→I gear driven gear 14→Ⅰ-II shift synchronizer→six-axis S6→IV gear driven gear 17→IV gear driving gear 13→four-axis S4→L gear driving gear 18→ L gear driven gear 19 → LL gear intermediate gear 21 → LL gear intermediate pinion gear 22 → LL gear driven gear 23 → M-LL gear shift mesh sleeve → eight-axis S8 → front and rear axle small bevel gears → front and rear axle transmission device.

Reverse 2 gears: F-R reversing synchronizer combined with R gear, I-II gear shift synchronizer combined with II gear, M-LL gear shift meshing sleeve combined with LL gear, the engine power is from the first shaft S1 → the upper universal joint transmission shaft Cheng→two-axis S2→F-R reversing synchronizer→reverse driving gear 28→reverse idler gear 29→reverse driven gear 30→five-axis S5→forward driven gear 31→forward driving gear 9→three-axis S3→Ⅱ gear driving gear 11→Ⅱ gear driven gear 15→Ⅰ-Ⅱ shift synchronizer→six-axis S6→Ⅳ gear driven gear 17→Ⅳ gear driving gear 13→four-axis S4→L gear driving gear 18→ L gear driven gear 19 → LL gear intermediate gear 21 → LL gear intermediate pinion gear 22 → LL gear driven gear 23 → M-LL gear shift mesh sleeve → eight-axis S8 → front and rear axle small bevel gears → front and rear axle transmission device.

Reverse 3 gears: F-R reversing synchronizer combined with R gear, III-IV gear shift synchronizer combined with III gear, M-LL gear shift meshing sleeve combined with LL gear, the engine power is from one shaft S1 to the upper universal joint drive shaft Cheng→two-axis S2→F-R reversing synchronizer→reverse driving gear 28→reverse idler gear 29→reverse driven gear 30→five-axis S5→forward driven gear 31→forward driving gear 9→three-axis S3→Ⅲ-Ⅳ gear shift synchronizer→Ⅲ gear driving gear 12→Ⅲ gear driven gear 16→six-axis S6→Ⅳ gear driven gear 17→Ⅳ gear driving gear 13→four-axis S4→L gear driving gear 18→ L gear driven gear 19 → LL gear intermediate gear 21 → LL gear intermediate pinion gear 22 → LL gear driven gear 23 → M-LL gear shift mesh sleeve → eight-axis S8 → front and rear axle small bevel gears → front and rear axle transmission device.

Reverse 4 gears: F-R reversing synchronizer combined with R gear, III-IV gear shift synchronizer combined with IV gear, M-LL gear shift meshing sleeve combined with LL gear, the engine power is from one shaft S1→upper universal joint drive shaft Cheng→two-axis S2→F-R reversing synchronizer→reverse driving gear 28→reverse idler gear 29→reverse driven gear 30→five-axis S5→forward driven gear 31→forward driving gear 9→three-axis S3→Ⅲ-Ⅳ shift synchronizer→Ⅳ gear driving gear 13→four-axis S4→L gear driving gear 18→L gear driven gear 19→LL gear intermediate gear 21→LL gear intermediate pinion gear 22→LL gear slave Moving gear 23 → M-LL gear shift mesh sleeve → eight-axis S8 → front and rear axle bevel gears → front and rear axle transmissions.

Reverse 5th gear: F-R reversing synchronizer combined with R gear, Ⅰ-II gear shift synchronizer combined with I gear, H-L gear shifting sleeve combined with L gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→Reverse driving gear 28→Reverse idler gear 29→Reverse driven gear 30→Five-axis S5→Forward driven gear 31→Forward driving gear 9→Three-axis S3→ Ⅰ gear driving gear 10→Ⅰ gear driven gear 14→Ⅰ-Ⅱ shift synchronizer→six-axis S6→Ⅳ gear driven gear 17→Ⅳ gear driving gear 13→four-axis S4→L gear driving gear 18→L gear Driven gear 19 → H-L gear shift mesh sleeve → eight-axis S8 → front and rear axle bevel gears → front and rear axle transmissions.

Reverse 6 gears: F-R reversing synchronizer combined with R gear, I-II gear shift synchronizer combined with II gear, H-L gear shifting sleeve combined with L gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→Reverse driving gear 28→Reverse idler gear 29→Reverse driven gear 30→Five-axis S5→Forward driven gear 31→Forward driving gear 9→Three-axis S3→ Ⅱ gear driving gear 11→Ⅱ gear driven gear 15→Ⅰ-Ⅱ shift synchronizer→six-axis S6→Ⅳ gear driven gear 17→Ⅳ gear driving gear 13→four-axis S4→L gear driving gear 18→L gear Driven gear 19 → H-L gear shift mesh sleeve → eight-axis S8 → front and rear axle bevel gears → front and rear axle transmissions.

Reverse 7 gears: F-R reversing synchronizer combined with R gear, III-IV gear shift synchronizer combined with III gear, H-L gear shift mesh sleeve combined with L gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→Reverse driving gear 28→Reverse idler gear 29→Reverse driven gear 30→Five-axis S5→Forward driven gear 31→Forward driving gear 9→Three-axis S3→ Ⅲ-Ⅳ shift synchronizer→Ⅲ gear driving gear 12→Ⅲ gear driven gear 16→six-axis S6→Ⅳ gear driven gear 17→Ⅳ gear driving gear 13→four-axis S4→L gear driving gear 18→L gear Driven gear 19 → H-L gear shift mesh sleeve → eight-axis S8 → front and rear axle bevel gears → front and rear axle transmissions.

Reverse 8 gears: F-R reversing synchronizer combined with R gear, III-IV gear shift synchronizer combined with IV gear, H-L gear shift mesh sleeve combined with L gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→Reverse driving gear 28→Reverse idler gear 29→Reverse driven gear 30→Five-axis S5→Forward driven gear 31→Forward driving gear 9→Three-axis S3→ Ⅲ-Ⅳ gear shift synchronizer→Ⅳ gear driving gear 13→four-axis S4→L gear driving gear 18→L gear driven gear 19→H-L gear shift meshing sleeve→eight-axis S8→rear axle small bevel gear 26→front and rear Bridge drive.

Reverse 9 gears: F-R reversing synchronizer combined with R gear, Ⅰ-II gear shift synchronizer combined with Ⅰ gear, M-LL gear shift meshing sleeve combined with M gear, the engine power is from one shaft S1→upper universal joint drive shaft Cheng→two-axis S2→F-R reversing synchronizer→reverse driving gear 28→reverse idler gear 29→reverse driven gear 30→five-axis S5→forward driven gear 31→forward driving gear 9→three-axis S3→I gear driving gear 10→I gear driven gear 14→Ⅰ-II shift synchronizer→six-axis S6→IV gear driven gear 17→IV gear driving gear 13→four-axis S4→M gear driving gear 24→ M gear driven gear 25 → M-LL gear shift mesh sleeve → eight-axis S8 → front and rear axle small bevel gears → front and rear axle transmissions.

Reverse 10 gears: F-R reversing synchronizer combined with R gear, I-II gear shift synchronizer combined with II gear, M-LL gear shift meshing sleeve combined with M gear, the engine power is from the first shaft S1 → the upper universal joint drive shaft Cheng→two-axis S2→F-R reversing synchronizer→reverse driving gear 28→reverse idler gear 29→reverse driven gear 30→five-axis S5→forward driven gear 31→forward driving gear 9→three-axis S3→Ⅱ gear driving gear 11→Ⅱ gear driven gear 15→Ⅰ-Ⅱ shift synchronizer→six-axis S6→Ⅳ gear driven gear 17→Ⅳ gear driving gear 13→four-axis S4→M gear driving gear 24→ M gear driven gear 25 → M-LL gear shift mesh sleeve → eight-axis S8 → front and rear axle small bevel gears → front and rear axle transmissions.

Reverse 11 gears: F-R reversing synchronizer combined with R gear, III-IV gear shift synchronizer combined with III gear, M-LL gear shift meshing sleeve combined with M gear, the engine power is from one shaft S1→upper universal joint transmission shaft Cheng→two-axis S2→F-R reversing synchronizer→reverse driving gear 28→reverse idler gear 29→reverse driven gear 30→five-axis S5→forward driven gear 31→forward driving gear 9→three-axis S3→Ⅲ-Ⅳ shift synchronizer→Ⅲ gear driving gear 12→Ⅲ gear driven gear 16→six-axis S6→Ⅳ gear driven gear 17→Ⅳ gear driving gear 13→four-axis S4→M gear driving gear 24→ M gear driven gear 25 → M-LL gear shift mesh sleeve → eight-axis S8 → front and rear axle small bevel gears → front and rear axle transmissions.

Reverse 12 gears: F-R reversing synchronizer combined with R gear, III-IV gear shift synchronizer combined with IV gear, M-LL gear shift mesh sleeve combined with M gear, the engine power is from one shaft S1 to the upper universal joint drive shaft Cheng→two-axis S2→F-R reversing synchronizer→reverse driving gear 28→reverse idler gear 29→reverse driven gear 30→five-axis S5→forward driven gear 31→forward driving gear 9→three-axis S3→Ⅲ-Ⅳ shift synchronizer→Ⅳ gear driving gear 13→four-axis S4→M gear driving gear 24→M gear driven gear 25→M-LL shift gear sleeve→eight-axis S8→rear axle small cone Gear → front and rear axle transmission.

Reverse 13 gears: F-R reversing synchronizer combined with R gear, Ⅰ-II gear shift synchronizer combined with I gear, H-L gear shift mesh sleeve combined with H gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→Reverse driving gear 28→Reverse idler gear 29→Reverse driven gear 30→Five-axis S5→Forward driven gear 31→Forward driving gear 9→Three-axis S3→ I gear driving gear 10 → I gear driven gear 14 → I-II shift synchronizer → six-axis S6 → H-L gear shift mesh sleeve → eight-axis S8 → front and rear axle small bevel gears → front and rear axle transmissions.

Reverse 14 gears: F-R reversing synchronizer combined with R gear, I-II gear shift synchronizer combined with II gear, H-L gear shift mesh sleeve combined with H gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→Reverse driving gear 28→Reverse idler gear 29→Reverse driven gear 30→Five-axis S5→Forward driven gear 31→Forward driving gear 9→Three-axis S3→ II gear driving gear 11→II gear driven gear 15→Ⅰ-II shift synchronizer→six-axis S6→H-L gear shift mesh sleeve→eight-axis S8→front and rear axle bevel gears→rear and front axle transmission.

Reverse 15 gears: F-R reversing synchronizer combined with R gear, III-IV gear shift synchronizer combined with III gear, H-L gear shift mesh sleeve combined with H gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→Reverse driving gear 28→Reverse idler gear 29→Reverse driven gear 30→Five-axis S5→Forward driven gear 31→Forward driving gear 9→Three-axis S3→ Ⅲ-Ⅳ shift synchronizer → Ⅲ gear driving gear 12 → Ⅲ gear driven gear 16 → six-axis S6 → H-L gear shift mesh sleeve → eight-axis S8 → front and rear axle small bevel gears → front and rear axle transmission.

Reverse 16 gears: F-R reversing synchronizer combined with R gear, III-IV gear shift synchronizer combined with IV gear, H-L gear shift mesh sleeve combined with H gear, the engine power is from one shaft S1→upper universal joint transmission shaft assembly→ Two-axis S2→F-R reversing synchronizer→Reverse driving gear 28→Reverse idler gear 29→Reverse driven gear 30→Five-axis S5→Forward driven gear 31→Forward driving gear 9→Three-axis S3→ Ⅲ-Ⅳ gear shift synchronizer→Ⅳ gear driving gear 13→Ⅳ gear driven gear 17→six-axis S6→H-L gear shift mesh sleeve→eight-axis S8→front and rear axle small bevel gears→rear and front axle transmission.

It should be noted that the parts not described in detail herein are prior art, and the above-mentioned embodiments are only used to illustrate the present invention, but the present invention is not limited to the above-mentioned embodiments. Simple modifications, equivalent changes and modifications all fall within the protection scope of the present invention.

Claims (10)

1. A tractor drive train with waist bending and waist twisting functions, including front axle transmission (1), shuttle reversing transmission (3), hingedly arranged on the front axle transmission (1) and shuttle reversing transmission Between the device (3) is the hinge device (2), the main gear shifting device (4), the section shifting device (5), the rear axle driving device (7) and the power output driving device ( 8), characterized in that: A shaft (S1) for connecting with the engine is installed in the front axle transmission device (1); Seven shafts (S7) are installed in the hinge device (2) of the waist-bending and twisting mechanism; Two shafts (S2), five shafts (S5) and ten shafts (S10) are installed in the shuttle reversing transmission device (3); Three-shaft (S3), six-shaft (S6) and eight-shaft (S8) are installed in the main gearshift transmission device (4); Four shafts (S4) are installed in the range shift transmission device (5); Nine shafts (S9) are installed in the power output transmission device (8); The hinge device (2) of the waist-bending and twisting mechanism is connected with the shuttle reversing transmission device (3) through two axes (S2) and seven axes (S7); The shuttle reversing transmission device (3) is connected with the main transmission shifting transmission device (4) through three shafts (S3) and eight shafts (S8); The main gearshift transmission device (4) is connected with the range shift transmission device (5) through four shafts (S4), six shafts (S6) and eight shafts (S8); The range shift transmission device (5) is connected with the rear axle transmission device (7) through the second shaft (S2); The rear axle transmission (7) is connected with the power output transmission (8) through the second shaft (S2). 2. A tractor transmission system with waist bending and waist twisting functions according to claim 1, characterized in that the front axle transmission device (1) is equipped with a first large gear (27) and is installed on the seven shafts (S7 ) on the first pinion gear (26) meshing with the first bull gear (27). 3. A tractor drive train with waist bending and waist twisting functions according to claim 1, characterized in that, the shuttle reversing transmission device (3) is equipped with an F-R reversing synchronizer, a forward drive gear (9 ), reverse driving gear (28), reverse idler gear (29), reverse driven gear (30) and forward driven gear (3), wherein: The forward driving gear (9) is installed on the triaxial (S3) and connected with the F-R reversing synchronizer; The reverse driving gear (28) is coaxially installed with the second shaft (S2), and is connected with the F-R reversing synchronizer; The forward gear driven gear 31 is fixedly connected to the fifth shaft (S5), and meshes with the forward gear driving gear (9); The reverse driven gear (30) is fixedly connected to the fifth shaft (S5); The reverse gear idler (29) is fixedly connected on the tenth shaft (S10), and the reverse gear idler (29) is meshed with the reverse gear driving gear (28) and the reverse gear driven gear (30) simultaneously. 4. A tractor drive train with waist bending and waist twisting functions as claimed in claim 1, characterized in that, the main gear shifting transmission device (4) is equipped with an I-gear driving gear (10), a II-gear driving gear (11), Ⅲ gear driving gear (12), Ⅳ gear driving gear (13), Ⅰ gear driven gear (14), Ⅱ gear driven gear (15), Ⅲ gear driven gear (16), Ⅳ gear driven gear Driven gear (17), Ⅰ-Ⅱ shift synchronizer and Ⅲ-Ⅳ shift synchronizer, wherein: The first gear driving gear (10) and the second gear driving gear (11) are fixedly connected to the three shafts (S3); The driving gear of gear III (12) is installed on the three shafts (S3) with the coaxial center line, and is connected with the gear shift synchronizer III-IV; The fourth gear driving gear (13) is fixedly connected to the four shaft (S4), and is connected with the III-IV shift synchronizer; The first gear driven gear (14) and the second gear driven gear (15) are respectively coaxially sleeved on the six shafts (S6), and the first gear driven gear (14) and the second gear driven gear (15) respectively Connect with Ⅰ-Ⅱ shift synchronizer; The third gear driven gear (16) and the fourth gear driven gear (17) are fixedly connected to the six-axis S6 respectively; The driving gear (10) of gear I meshes with the driven gear (14) of gear I, the driving gear (11) of gear II meshes with the driven gear (15) of gear II, and the driving gear (12) of gear III and the driven gear (12) of gear III Gears (16) are meshed, and IV gear driving gear (13) is meshed with IV gear driven gear (17). 5. A tractor drive train with waist bending and waist twisting functions according to claim 1, characterized in that, the section shift transmission device (5) is equipped with an L gear driving gear (18), an L gear driven gear Gear (19), M gear driving gear (24), M gear driven gear (25), H-L gear shift engagement sleeve and M-LL gear shift engagement sleeve, wherein: The L gear driving gear (18) and the M gear driving gear (24) are fixedly connected to the four-axis S4 respectively; The L gear driven gear (19) and the M gear driven gear (25) are installed coaxially with the eight-axis S8 respectively; The H-L gear shifting sleeve is connected with the six shaft (S6), the L gear driven gear (19) is connected with the H-L gear shifting sleeve, the M gear driven gear (25) is connected with the M-LL gear shifting sleeve connected. 6. A tractor drive train with waist bending and waist twisting functions according to claim 1, characterized in that the rear axle drive (7) is provided with a second small bevel gear (36) on the eight-axis (S8) , Mesh with the second small bevel gear (36) to transmit the power to the second large bevel gear (37) of the differential gear assembly. 7. A tractor drive train with waist bending and waist twisting functions according to claim 1, characterized in that the power output transmission device (8) is equipped with a 720rpm driving gear (32) and a 720rpm driven gear (33) , a 540rpm driving gear (34), a 540rpm driven gear (35), and a 540-720rpm gearshift meshing sleeve, wherein: The 720rpm driving gear (32) and the 540rpm driving gear (34) are fixedly connected to the second shaft (S2); The 720rpm driven gear (33) and the 540rpm driven gear (35) are installed coaxially with the nine-axis (S9), and are respectively connected to the 540-720rpm gearshift meshing sleeve; The 720rpm driving gear (32) is meshed with the 720rpm driven gear (33), the 540rpm driving gear (34) is meshed with the 540rpm driven gear (35), and the nine shafts (S9) are connected to the power output shaft head. 8. A tractor drive train with waist bending and waist twisting functions according to any one of claims 1-7, characterized in that a creep gear transmission (6 ), the crawling gear transmission (6) is equipped with LL gear driving gear (20), LL gear intermediate gear (21), LL gear intermediate pinion gear (22), LL gear driven gear (23) and eleven shafts (S11), where: The LL gear driving gear (20) is a fixed double gear with the L gear driven gear (19), and is installed with the coaxial center line of the eight-axis S8; The eleventh axis (S11) is parallel to the axis lines of the second axis (S2) and eighth axis (S8), and is arranged in a three-axis space; The middle bull gear of LL gear (21) and the middle pinion gear of LL gear (22) are fixedly connected on the eleventh shaft (S11); The LL gear driven gear (23) is coaxially installed with the eight-axis (S8), the hole sleeve is on the eight-axis (S8), and is connected with the M-LL gear shift engagement sleeve; The LL gear driving gear (20) is meshed with the LL gear intermediate bull gear (21), and the LL gear intermediate pinion (22) is meshed with the LL gear driven gear (23). 9. A tractor drive train with waist bending and waist twisting functions as claimed in claim 8, characterized in that: One-axis (S1), two-axis (S2), three-axis (S3), four-axis (S4) coaxial center line setting; Five-axis (S5), six-axis (S6), seven-axis (S7), eight-axis (S8) coaxial central line setting, and with one axis (S1), two-axis (S2), three-axis (S3), four-axis Shaft (S4) axis parallel; The nine-axis (S9) is parallel to the center line of the one-axis (S1), two-axis (S2), three-axis (S3), and four-axis (S4), and is parallel to the five-axis (S5), six-axis (S6), and seven-axis (S7) and eight-axle (S8) have different axis lines; from the rear axle of the tractor to the engine direction, the ten-axis (S10) and eleven-axis (S11) are separated on both sides of the left and right symmetry plane of the tractor. 10. A tractor drive train with waist bending and waist twisting functions as claimed in claim 9, characterized in that: from the rear axle of the tractor to the engine direction, the tenth axis (S10) is located on the left side of the left and right symmetry plane of the tractor, eleven The axis (S11) is located to the right of the left-right symmetry plane of the tractor.

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