Mountain articulated tractor

Abstract

The invention provides a mountainous articulated tractor. The mountainous articulated tractor comprises a transmission system, the transmission system comprises a diesel engine, a clutch, a transmission, a speed regulator, a soft articulated bridge, a farm machine power box and a rear axle; the transmission is fixedly connected with the housing of the diesel engine and the soft articulated bridge respectively, the rear end of the soft articulated bridge is fixedly connected with the farm machine power box and the rear axle in sequence; the clutch comprises clutch shaft teeth; the transmission comprises a bidirectional cavity, a bridge cavity and a transmission cavity arranged in sequence; the clutch shaft teeth are engaged with the diesel engine, the clutch shaft teeth are connected with the transmission cavity and the speed regulator to form a power input path after changing engagement in the bidirectional cavity, the power input path outputs driving power through the bridge cavity, the power input path outputs from the power output shaft of the rear axle through the soft articulated bridge, the farm machine power box and the rear axle. The invention solves the defects of the prior art products and resolves the disadvantages that it is difficult to form large-scale production of hilly and mountainous tractors.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural machinery, in particular to a mountain articulated tractor. BACKGROUND

[0002] The existing four-wheel drive tractor allows the existence of the circumferential speed difference between the front and rear wheels, and the internal power flow is caused in the transmission system due to the local road conditions and the difference in the tire pressure of each wheel during driving. Especially in the four-track driving state, the internal power is difficult to release and accumulates due to the limited slip of the track, and finally ends with the destruction of the transmission components. The mountain tractor that maintains the use by consuming components is only a small horse machine for a large horse machine, and such a tractor has a high use cost and cannot meet the policy requirements of energy saving, consumption reduction and emission reduction.

[0003] In addition, the existing mountain tractor ignores the inherent characteristics of the articulated chassis under the action of gravity, that is, the "bending" between the articulated front and rear bodies. This leads to the following defects of the tractor: (1) When the mountain tractor runs in the mountain area and climbs along the driving direction, the articulated front and rear bodies are rigidly connected, so that the stress in the longitudinal axis direction of the articulated front and rear bodies is converted into a large-span single-beam stress condition. It is found that when the existing mountain articulated tractor ends on a steep slope, the two rear wheels of the tractor are immediately lifted by the chassis frame, and the four-wheel drive is immediately changed into two-wheel drive. When the front wheel traction is not enough to pull the tractor forward, the front wheel slips, and the mountain tractor is suspended and cannot move forward; (2) The articulated joints of the existing articulated tractor are easily worn out. The large gap between the articulated joints easily causes uncontrolled bending and yaw impact, which makes the mountain tractor lose stability; the most dangerous is that when the mountain tractor is turning down the mountain and bending, if it encounters bumps caused by stones or foreign objects on the ground, the impact force between the front and rear bodies increases, and the upward overturning torque caused by the ground obstacles increases, which causes the bodies to twist at a large angle relative to each other, and then pulls the front body to roll over at the same time. In recent years, the cause of a large number of accidents is directly pointed to "defect (2)", which is a major hidden danger of rollover accidents. Therefore, the current passive measure is to release the tractor at a low speed, but not to promote it. SUMMARY

[0004] The purpose of the present application is to provide a mountain articulated tractor to solve the technical defects of the "articulated disc four-wheel drive" tractor in the prior art, which cannot be engaged in farming activities such as plowing, and also has the technical defects of tire wear, especially poor traction performance on heavy, wet and soft soil, and is not as good as a tracked tractor.

[0005] The technical scheme of the present application is: a mountainous hinged tractor comprises a transmission system, the transmission system comprises a diesel engine, a clutch, a transmission, a speed regulator, a soft hinge bridge, a farm machine power box and a rear axle;

[0006] The clutch comprises clutch shaft teeth;

[0007] The transmission comprises a bidirectional cavity, a bridge cavity and a transmission cavity arranged in sequence;

[0008] The speed regulator comprises a sun gear, a planet gear, a planet carrier, a ring gear and a ring gear carrier;

[0009] The soft hinge bridge comprises a transmission part and a bridge member, the bridge member comprises a bridge shell, a hinge body, a ring claw, a damper, a hinge seat;

[0010] The front end of the transmission is fixedly connected with the shell of the diesel engine, the rear end is fixedly connected with the front end of the soft hinge bridge, the rear end of the soft hinge bridge is fixedly connected with the farm machine power box, and the rear end of the farm machine power box is fixedly connected with the rear axle;

[0011] An axle connected with the clutch is arranged in the bidirectional cavity and the bridge cavity of the transmission, the axle is connected with a toothed two-axle through a connecting sleeve, and the toothed two-axle is located in the transmission cavity; a hollow shaft is rotationally arranged in the transmission cavity;

[0012] The outer end of the hollow shaft in the transmission cavity is drivingly connected with the sun gear of the speed regulator, the hollow shaft is installed on the wall of the transmission cavity through a bearing set; a plurality of second planet shafts are uniformly distributed along a division circle of the planet carrier, the planet gears are rotationally arranged on the second planet shafts; the sun gear is externally meshed with the planet gears; the planet gears are internally meshed with the ring gear, and the ring gear is fixedly connected with the ring gear carrier; the front end of the ring gear carrier is rotationally arranged outside the bearing set; the rear shaft extension of the planet carrier is rotationally arranged on the partition plate of the bridge shell; the rear shaft extension inner hole of the planet carrier is drivingly connected with the front end of a connector; the rear end of the connector is drivingly connected with a front seat;

[0013] A front axle is rotationally arranged in the hollow shaft, one end of the front axle is drivingly connected with an axle seat, and the other end is connected with a first large bevel gear of the bridge cavity, so as to drive the running system in the bridge cavity to act;

[0014] The front end of the bridge shell of the soft hinge bridge is connected with the rear end of the transmission, the rear end of the bridge shell is provided with an upper seat plate and a lower seat plate, bearing holes are respectively formed in the upper seat plate and the lower seat plate on the same vertical axis located on the symmetry center line, and joint bearings are arranged in the bearing holes; the front end of the hinge body is provided with an upper vertical shaft fork and a lower vertical shaft fork, vertical shaft holes are respectively formed in the upper vertical shaft fork and the lower vertical shaft fork on the same vertical axis located on the symmetry center line, the bearing holes and the vertical shaft holes are aligned one by one and are connected through vertical shafts to form an upper hinge point and a lower hinge point respectively.

[0015] Preferably, the two-way cavity of the transmission comprises forward teeth, reverse teeth and connecting teeth; the transmission cavity comprises gear teeth;

[0016] The front end of the clutch shaft tooth is engaged with the power output interface of the diesel engine, and the rear end gear of the clutch shaft tooth is a size connecting tooth, the small tooth of which is slidingly engaged with the inner tooth of the forward tooth, the forward tooth being slidingly arranged at the front end of a shaft, the front end shaft of the shaft being rotatably arranged in the center hole of the small tooth of the clutch shaft tooth; the input end of the connecting tooth is externally engaged with the large tooth at the rear end of the clutch shaft tooth, and the output end of the connecting tooth is fixedly externally engaged with the reverse tooth;

[0017] The gear on the toothed two-axis in the transmission cavity is slidingly engaged with the gear of the gear teeth, and the gear teeth are slidingly arranged on a hollow shaft.

[0018] Preferably, the transmission cavity further comprises power teeth, a hydraulic cone gear pair, a sliding connecting tooth, and a power shaft.

[0019] The agricultural machinery power box comprises input teeth, output teeth, a rear axle and connecting teeth.

[0020] The rear end shaft of the toothed two-axis in the transmission cavity is fixedly provided with the power teeth, the power teeth are externally engaged with the small tooth of the sliding connecting tooth, the sliding connecting tooth is slidingly arranged on the power shaft, and the sliding connecting tooth is a size connecting tooth; the sliding connecting tooth is slidingly arranged on the power shaft, the power shaft is provided with a hydraulic cone gear pair for providing working power for the hydraulic system of the tractor; the rear end of the power shaft is fixedly provided with a shift gear pair, the shift gear pair comprises input teeth and output teeth, the input teeth are connected to the rear end of the power shaft, and the output teeth are arranged on the front axle yoke of the upper constant velocity universal shaft; the constant velocity universal shaft has upper and lower two shafts, the rear axle yoke of which is rotatably arranged at the front end of the shaft hole of the hinge body, the rear axle yoke of the constant velocity universal shaft passes through the shaft hole of the hinge body and is connected to the upper input shaft of the agricultural machinery power box through a connecting sleeve; the other is connected to the lower rear axle of the agricultural machinery power box.

[0021] The input teeth of the agricultural machinery power box are fixedly arranged on the input shaft and engaged with the front end large tooth of the connecting tooth; the rear axle is rotatably arranged in the agricultural machinery power box, and the rear end small cone tooth of the rear axle extends into the rear axle; the connecting tooth is rotatably arranged on the rear axle, the rear end small tooth of which is engaged with the output tooth, the shaft of the output tooth is arranged on the housing of the agricultural machinery power box through a bearing, and the power output shaft is fixedly arranged in the shaft hole of the output tooth through the rear axle.

[0022] Preferably, the bridge cavity of the transmission comprises a first large bevel gear, a first driving gear, a first driven gear, a first brake gear, a first half shaft, a first brake, a first differential and a first walking system; the front end of the front axle is provided with a small bevel gear meshing with the first large bevel gear, and the first large bevel gear is coaxially fixed with the first differential housing; the first differential is provided with a first transverse shaft, and the first driving gear is rotatably arranged at the left and right ends of the first transverse shaft; the first driving gear is simultaneously meshed with the first driven gear and the first brake gear; the first driven gear can drive the first walking system fixed thereto to output walking power; the first brake gear is connected with the shaft of the first brake; the first half shaft is symmetrically arranged on the left and right sides, and each of the first half shafts is provided with the first driven gear; and the outer end of the first half shaft is connected with the first walking system.

[0023] Preferably, the first differential of the bridge cavity comprises a first differential gear, a first planetary shaft and a first planetary gear; the first planetary gear is rotatably arranged on the first planetary shaft and symmetrically arranged in front and back, the first planetary shaft is fixed on the housing of the first differential, and the first differential gear is arranged in the left and right directions; the first differential gear is rotatably arranged on the first transverse shaft, and the first differential gear is meshed with the first planetary gear.

[0024] Preferably, the rear axle comprises a second large bevel gear, a second driving gear, a second driven gear, a second brake gear, a second half shaft, a second brake, a second walking system and a second differential; the second large bevel gear is coaxially fixed with the second differential housing; the second differential is provided with a second transverse shaft, and the second driving gear is rotatably arranged at the left and right ends of the second transverse shaft; the second driving gear is simultaneously meshed with the second driven gear and the second brake gear; the second driven gear can drive the second walking system fixed thereto to output walking power; the second brake gear is connected with the shaft of the second brake; and the rear axle of the agricultural power box is provided with a small bevel gear meshing with the second large bevel gear.

[0025] Preferably, the second differential of the rear axle comprises a second differential gear, a second planetary shaft and a second planetary gear, the second planetary gear is rotatably arranged on the second planetary shaft and symmetrically arranged in front and back, the second planetary shaft is fixed on the housing of the second differential, the second differential gear is arranged in the left and right directions, the second differential gear is rotatably arranged on the second transverse shaft, and the second differential gear is meshed with the second planetary gear.

[0026] Preferably, the rear axle further comprises a differential lock, and the shaft of the second driving gear arranged on the left side is in sliding engagement with the differential lock.

[0027] Preferably, the transmission member comprises a front axle, an axle seat, a middle axle, a front seat, a front differential gear, a planetary bevel gear, a bevel gear shaft, an axle bracket, a lock seat, a rear differential gear, a lock pin, a lock ring, a key shaft, an outer spherical surface bearing, a shift fork, an axle fork tooth, a bridge tooth and a connector.

[0028] The connector connects the speed regulator and the front seat, the front end of the front seat is fixed with the bridge teeth, the rear end is connected with the axle support and the lock seat; the whole of the front seat, the axle support and the lock seat is rotatably arranged in the bridge shell through the bearing group; the lock seat is connected at the front and rear positions, the axle support is clamped on the connecting end surface of the lock seat; a plurality of bevel pinions are symmetrically arranged on the outer circle radius of the axle support, the planetary bevel gears are rotatably arranged on the bevel pinions, the left and right sides of the planetary bevel gears are simultaneously engaged with the front differential gear and the rear differential gear; the central hole of the axle support is arranged with the middle shaft, the axle seat is rotatably arranged in the shaft hole of the front seat through the bearing group; the axle seat is engaged with the rear end of the front axle, the front end of the front axle is provided with a small bevel gear engaged with a large bevel gear in the bridge cavity; the front axle is rotatably arranged in the hollow shaft through the bearing group; the rear end of the rear differential gear is engaged with the front end surface of the key shaft and is rotatably arranged in the front part of the middle shaft; the rear end of the rear differential gear is engaged with the front end surface of the key shaft and is rotatably arranged in the rear part of the middle shaft; the lock ring is slidably arranged on the key shaft, a plurality of lock pins are uniformly distributed on the index circle of the front end surface of the lock ring; the lock ring is arranged with a shift fork; a plurality of lock holes are arranged on the rear end of the lock seat corresponding to the index circle of the lock pins, the lock pins are slidably inserted into the lock holes; the lock ring is engaged with the axle fork teeth; the number of the constant-velocity universal shafts is two, the front axle fork of the other constant-velocity universal shaft is fixed in the axle fork teeth, the rear axle fork passes through the shaft hole of the hinge body, is connected with the rear axle on the agricultural machinery power box through the connecting sleeve, and the outer spherical bearing is arranged at the front end of the hinge body.

[0029] Preferably, the bridge shell comprises a joint bearing, an upper seat plate and a lower seat plate, and the hinge body comprises a vertical rod and a steering oil cylinder.

[0030] The upper seat plate and the lower seat plate are connected through the vertical rod on both sides, the steering oil cylinder is installed on the vertical rod, and the rear vehicle body is swung left and right with the vertical shaft as the center of rotation by pushing and pulling the hinge body through the vertical rod.

[0031] Compared with the related art, the present application has the following advantages:

[0032] Firstly, the transmission system breaks the traditional design of tractors, uses an automobile standard gearbox + functional unit combination to realize the layout of multiple types of chassis, solves the problem that the demand difference of mountain tractors and self-propelled agricultural machinery chassis is large, the batch is small, the product standard is short, and the enterprise is difficult to organize production on a large scale, and solves the problem that the manufacturing cost and use cost are high.

[0033] Secondly, the tractor has two working conditions: normal "front / rear vehicle differential driving" and special "front / rear vehicle same speed driving"; the tractor has the characteristics of improving the working efficiency of the tractor and the passability of mountain operation, and solving the technical problem that the four-track mountain tractor chassis is easily damaged.

[0034] Third, it has forward / reverse, bidirectional driving function, which improves the tractor's ability to adapt to agronomic needs;

[0035] Fourth, the soft articulation technology of this invention satisfies the requirements of mountain articulated tractors from a three-dimensional perspective, requiring good traction of all four wheels of the tractor at any time. This makes it possible for the front and rear bodies to be articulated into one unit, which not only obtains the torsion angle and the turning angle, but also adds a controllable bending angle. This bending angle not only eliminates the safety hazards of the tractor, but also increases the tractor's ability to drive on terrain.

[0036] V. This invention's rear-mounted power convergence continuously variable transmission (CVT) technology adopts an energy-saving and quality-improving approach that uses a small-power power flow to regulate the tractor's high-power output. This solves the long-standing problem of high cost and low efficiency in power transmission models, and the technical conflict that the small torque of the rear-mounted power convergence cannot meet the high torque output requirements of the tractor's transmission system. While improving efficiency and reducing costs, it allows for CVT solutions for both tractor travel speed and implement operating speed using electric or other power sources.

[0037] VI. The implementation of the above technologies endows tractors with the ability to operate entirely by mechanization, significantly improving the annual utilization rate of agricultural machinery. This invention emphasizes energy conservation, emission reduction, and low consumption throughout the entire process, resulting in high-efficiency and low-consumption tractor use, injecting green technology into its entire life cycle. It has significant economic and social benefits. Attached Figure Description

[0038] Figure 1 A schematic diagram of the transmission system of the mountain articulated tractor provided by the present invention;

[0039] Figure 2 for Figure 1 An enlarged schematic diagram of the speed controller 4 in the diagram;

[0040] Figure 3 This is a schematic diagram of the bending of the flexible hinge bridge under condition a.

[0041] Figure 4 For along Figure 3 AA section view diagram;

[0042] Figure 5 This is a schematic diagram of the bending of the flexible hinge bridge under condition b.

[0043] Figure 6 A schematic diagram of the front and rear body torsion of the mountain articulated tractor provided by the present invention;

[0044] Figure 7 This is a schematic diagram of the flexible hinged bridge in its initial state.

[0045] Figure 8 A schematic diagram of the right-hand turn of the flexible hinge bridge;

[0046] Figure 9 Fig. 6 is a schematic view of the soft hinge bridge turner turning left. DETAILED DESCRIPTION

[0047] The present application will be described in detail below with reference to the drawings and embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the terms "upper", "lower", "left", "right" appear in the following, they only mean the upper, lower, left and right directions consistent with the drawings themselves, and do not limit the structure.

[0048] As shown in Figure 1 The mountain articulated tractor provided by the embodiment includes a transmission system, which includes a diesel engine 1, a clutch 2, a transmission 3, a speed regulator 4, a soft hinge bridge turner 5, a farm machine power box 6 and a rear axle 7.

[0049] The clutch 2 includes a clutch shaft tooth 21; the transmission 3 includes a bidirectional cavity 33, a bridge cavity 31 and a transmission cavity 32. The bidirectional cavity 33 includes a forward tooth 331, a reverse tooth 332 and a connecting tooth 333, and the forward tooth 331 is an inner and outer tooth structure.

[0050] The bridge cavity 31 is common with the main part of the rear axle 7, which includes a large bevel tooth 311 / 71 driving tooth 312 / 72, a driven tooth 313 / 73, a brake tooth 314 / 74, a left and right half shaft 316 / 76, a brake 317 / 77, a running system 319 / 79, a differential 318 / 711, the differential is composed of left and right differential teeth 3181 / 7111, a cross shaft 3182 / 7112, a planetary gear 3184 / 7114 and a planetary shaft 3183 / 7113; the rear axle 7 further includes a differential lock 75, a lock pin 751 and a power output shaft 78.

[0051] The transmission cavity 32 is composed of a shaft 321, a toothed two-shaft 322, a gear tooth 323, a power tooth 325, a hydraulic bevel tooth pair 326, a sliding connecting tooth 327, a power shaft 328 and a hollow shaft 329.

[0052] The speed regulator 4 is composed of a sun gear 41, a planetary gear 42, a planet carrier 43, a planet shaft 431, a ring gear 44, a ring gear carrier 45, a speed regulating wheel 46, an electric motor or other power driver 47.

[0053] The flexible hinge bridge 5 is composed of a transmission component 51, a bridge component 52, and a bearing assembly 53. The transmission component 51 includes: a front axle 511, a bearing seat 512, a central axle 513, a front seat 514, a front differential gear 515, a planetary bevel gear 516, a bevel gear shaft 517, a shaft bracket 518, a lock seat 519, a rear differential gear 5110, a locking pin 5111, a locking ring 5112, a key shaft 5113, a constant velocity universal joint 5114, an outer spherical bearing 5115, a shift fork 5116, a shaft fork gear 5117, a bridge gear 5118 connecting sleeve 5119, a connector 5120, and an indexing gear pair 5121.

[0054] The bridge component 52 includes: a bridge housing 521, a hinge 522, a ring claw 523, a damping disc or damper 524, and a hinge seat 525. The bridge housing 521 includes: a spherical plain bearing 5211A or a tapered roller bearing 5211B, an upper seat plate 5212, and a lower seat plate 5213. The hinge 522 includes: a vertical shaft 5221, an upper shaft fork 5222, a lower shaft fork 5223, a vertical rod 5224, and a steering cylinder 5225. The agricultural machinery power box 6 includes an input shaft 61, an input gear 62, an output gear 63, a rear axle 64, a connecting gear 65, and an elastic element 5241.

[0055] (I) Power Input Path and Characteristics: The mountain tractor includes a diesel engine 1, a clutch 2, a clutch shaft gear 21, a transmission 3, a speed governor 4, a flexible axle 5, a power box 6, and a rear axle 7. The transmission 3 consists of a two-way chamber 33, an axle chamber 31, and a shift chamber 32. For example... Figure 1 As shown, the front of the transmission 3 of the mountain tractor is fixedly connected to the housing of the diesel engine 1, and the rear is fixedly connected to the front of the axle housing 521 of the flexible hinge bridge 5. The rear of the hinge seat 525 of the flexible hinge bridge 5 is fixedly connected to the agricultural machinery power box 6, and the rear of the agricultural machinery power box 6 is fixedly connected to the rear axle. The front spline of the clutch shaft gear 21 meshes with the internal spline of the power output interface of the diesel engine 1. The journal of the clutch shaft gear 21 is mounted on the upper front of the bidirectional cavity 33 of the transmission 3 via a bearing.

[0056] The bidirectional cavity 33 includes forward tooth 331, reverse tooth 332 and gear 333. The forward tooth 331 is an internal and external tooth structure, and the forward tooth 331 is slidingly arranged at the front end of a shaft 321. The gear at the rear end of the clutch shaft tooth 21 is a size gear, and the small gear is slidingly engaged with the internal tooth of the forward tooth 331. A front shaft head of a shaft 321 is rotatably arranged in the central hole at the small gear end of the clutch shaft tooth 21. The input end of the gear 333 is externally engaged with the rear end gear of the clutch shaft tooth 21. The output end of the gear 333 is fixedly externally engaged with the reverse tooth 332. The reverse tooth 332 is also slidingly externally engaged with the forward tooth 331. The transmission cavity 32 of the present application is composed of a shaft 321, a toothed two-shaft 322, a gear 323, a power tooth 325, a hydraulic bevel gear pair 326, a sliding gear 327, a power shaft 328 and a hollow shaft 329. The rear part of the shaft 321 is fixedly connected with the front shaft head of the toothed two-shaft 322 through a connecting sleeve 5119. The gear on the toothed two-shaft 322 is slidingly engaged with the gear of the gear 323. The gear 323 is slidingly arranged on the hollow shaft 329. The outer end of the hollow shaft 329 is axially drivingly connected with the sun gear 41 of the speed regulator 4.

[0057] (II) Machine power path and features: The rear end of the toothed two-shaft 322 is fixedly provided with a power tooth 325. The power tooth 325 is externally engaged with the small gear of the sliding gear 327. The sliding gear 327 is slidingly arranged on the power shaft 328. The sliding gear 327 is a size gear. The power shaft 328 is provided with a hydraulic bevel gear pair 326. The hydraulic bevel gear pair 326 provides working power for the hydraulic system of the tractor. The rear end of the power shaft 328 is fixedly connected with the input tooth of the indexing gear pair 5121. The output tooth of the indexing gear pair 5121 is arranged on the front shaft fork of the upper constant velocity universal shaft 5114. The constant velocity universal shaft 5114 has upper and lower two shaft forks. The rear shaft fork is rotatably arranged at the front end of the hinge body 522 shaft hole. The rear shaft fork of the constant velocity universal shaft 5114 passes through the shaft hole of the hinge body 522 and is connected with the upper input shaft 61 of the agricultural machine power box 6 through the connecting sleeve 5119. The other end is connected with the lower rear shaft 64 of the agricultural machine power box 6. The input tooth 62 of the agricultural machine power box 6 is fixedly arranged on the input shaft 61 and is engaged with the front large gear of the gear 65. The gear 65 is rotatably arranged on the rear shaft 64. The rear small gear of the gear 65 is engaged with the output tooth 63. The output tooth 63 is axially extended through a bearing and is mounted on the housing of the agricultural machine power box 6. The power output shaft 78 is fixedly arranged in the axial extension hole.

[0058] (III) Traveling power path and features: As shown in the figure, Figure 2As shown, the planetary carrier 43 is uniformly distributed with a plurality of second planetary shafts 431 along the index circle, and the planetary gears 42 are rotatably arranged on the second planetary shafts 431; the sun gear 41 is externally meshed with the planetary gears 42; the planetary gears 42 are internally meshed with the ring gear 44, which is fixedly connected with the ring gear carrier 45; the ring gear carrier 45 is rotatably arranged at the outer portion of the bearing set 53 at the front end. The rear shaft extension of the planetary carrier 43 is rotatably arranged on the partition plate of the axle housing 521. The rear end of the connector 5120 is drivingly connected with the front seat 514.

[0059] The external teeth of the ring gear 44 are externally meshed with the speed regulating wheel 46, which is fixedly arranged on the output shaft of the electric motor or other power driver 47. The front end of the shaft extension of the front seat 514 is fixedly arranged with the axle tooth 5118.

[0060] The rear end of the front seat 514 is fixedly connected with the axle carrier 518 and the lock seat 519 through bolts, and the three are combined to be rotatably arranged in the axle housing 521 of the axle member 52 through the bearing set 53. The axle carrier 518 is clamped on the abutting end faces of the front seat 514 and the lock seat 519. Figure 1 As shown, a plurality of bevel shafts 517 are symmetrically arranged in the radial direction of the outer circle of the axle carrier 518, and the planetary bevel gears 516 are rotatably arranged on the bevel shafts 517. The planetary bevel gears 516 are simultaneously meshed with the front differential tooth 515 and the rear differential tooth 5110. The central hole of the axle carrier 518 is tightly arranged with the central shaft 513. The shaft seat 512 is rotatably arranged in the shaft extension hole of the front seat 514 through the bearing set 53, and the inner spline of the shaft seat 512 is meshed with the outer spline of the tail end of the front axle 511. The small bevel gear at the front end of the front axle 511 is meshed with the large bevel gear 311 of the axle cavity 31, and the front axle 511 is rotatably arranged in the hole of the hollow axle 329 through the bearing set 53. The rear end of the front differential tooth 515 is key meshed with the key groove end face of the shaft seat 512 and is simultaneously rotatably arranged at the front portion of the central shaft 513. The rear end of the rear differential tooth 5110 is key meshed with the key groove end face of the front end of the key shaft 5113 and is simultaneously rotatably arranged at the rear portion of the central shaft 513. The outer spline of the key shaft 5113 is slidably arranged with the lock ring 5112, and a plurality of lock pins 5111 are uniformly arranged on the front end face index circle of the lock ring 5112. The yoke 5116 is arranged in the yoke groove of the lock ring 5112.

[0061] The rear end surface of the lock seat 519 is provided with a plurality of lock holes corresponding to the positions of the lock pin 5111 on the index circle, allowing the lock pin 5111 to be inserted and slid. The lock ring 5112 is engaged with the shaft fork tooth 5117, and the front axle fork of the lower constant velocity universal joint 5114 is fixedly arranged in the hole of the shaft fork tooth 5117. The rear axle fork of the lower constant velocity universal joint 5114 is rotatably arranged in the front end of the shaft hole of the hinge body 522 through the outer spherical surface bearing 5115. The rear axle fork of the constant velocity universal joint 5114 is fixedly connected with the rear axle 64 of the agricultural machine power box 6 through the shaft hole of the hinge body 522 and the connecting sleeve 5119. The rear end of the rear axle 64 is provided with a rear end small taper tooth. The large taper tooth 71 of the rear axle 7 is engaged with the rear end small taper tooth of the rear axle 64.

[0062] The bridge cavity 31 is provided with a plurality of lock pin holes distributed along the back surface of the large taper tooth 311 / 71 of the rear axle 7 along the index circle. The large taper tooth 311 / 71 is coaxially fixed with the differential 318 / 711 housing. The horizontal shaft 3182 / 7112 is fixedly arranged in the center hole of the differential 318 / 711 housing. The planetary gear 3184 / 7114 is rotatably arranged on the planetary shaft 3183 / 7113, which is symmetrically fixed on the differential 318 / 711 housing. The left and right differential teeth 3181 / 7111 are rotatably arranged on the horizontal shaft 3182 / 7112 and engaged with the planetary gear 3184 / 7114. The driving tooth 312 / 72 is rotatably arranged at the left and right ends of the horizontal shaft 3182 / 7112 and is engaged with the tail end surface key of the left and right differential teeth 3181 / 7111. The shaft of the left driving tooth 72 of the rear axle 7 is slidably engaged with the spline of the differential lock 75 (the differential lock is also applicable to the transmission 3). The driven tooth 313 / 73 is fixedly arranged on the left and right half shafts 316 / 76 and is engaged with the driving tooth 312 / 72. The outer end of the half shaft 316 / 76 is connected with the walking system 319 / 79. The driving tooth 312 / 72 is also engaged with the brake 317 / 77. The brake tooth 314 / 74 is fixedly arranged on the shaft of the brake 317 / 77. The brake 317 / 77 is fixedly arranged on the front / rear axle housing.

[0063] (Four) The structural features of the soft hinge bridge connector: the bridge member 52 of the soft hinge bridge connector 5 is composed of a bridge shell 521, a hinge body 522, a ring claw 523, a damping disc or damper 524, and a hinge seat 525. The rear part of the bridge shell 521 is provided with an upper seat plate 5212 and a lower seat plate 5213. The bridge shell 521 also includes an upper joint bearing 5211A or a tapered roller bearing 5211B. The front end of the hinge body 522 is provided with an upper vertical axle fork 5222 and a lower vertical axle fork 5223. The two sides of the upper vertical axle fork 5222 are respectively provided with vertical rods 5224. The rear end of the hinge body 522 is a hollow shaft body, and the shaft body is provided with a ring claw groove along the diameter direction. The hinge body 522 also includes a vertical axle 5221 and a steering oil cylinder 5225. As shown in Figure 1 ,Figure 2 、 Figure 4 characterized in that the front end of the axle housing 521 is fixedly connected with the rear end surface of the transmission 3, the upper seat plate 5212 and the lower seat plate 5213 of the axle housing 521 are provided with bearing holes on the same vertical axis located on the symmetry center line, and the holes are provided with relevant joint bearings 5211A or tapered roller bearings 5211B; the upper vertical shaft fork 5222 and the lower vertical shaft fork 5223 of the front end of the hinge body 522 are provided with vertical shaft holes on the same vertical axis located on the symmetry center line. One of the vertical shafts 5221 is sequentially fitted into the upper plate hole of the upper vertical shaft fork 5222, the joint bearing 5211A or the tapered roller bearing 5211B hole of the upper seat plate 5212 of the axle housing 521, and the lower plate hole of the upper vertical shaft fork 5222, forming an upper hinge point; the other vertical shaft 5221 is sequentially fitted into the lower plate hole of the lower vertical shaft fork 5223 of the hinge body 522, the joint bearing 5211A or the tapered roller bearing 5211B hole of the lower seat plate 5213A of the axle housing 521, and the upper plate hole of the lower vertical shaft fork 5223, forming a lower hinge point. The upper and lower intersection points hinge the axle housing 521 and the hinge body 522 into the over-bridge component 52. Characterized in that the ring claw groove of the hinge body 522 is rotatably provided with the ring claw 523. Figure 2 As shown in the A-A view, the ring claw 523 is also provided with left and right shaft ears, and the left and right shaft ears of the ring claw 523 are rotatably fitted into the holes of the left and right supports of the hinge seat 525, and the hinge seat 525 is fixedly connected with the front end of the agricultural machinery power box 6. The damping disc or damper 524 is arranged between or outside the ring claw 523 and the hinge seat 525.

[0064] The working principle of the mountainous articulated tractor is as follows:

[0065] The transmission 3 includes a bidirectional cavity 33, a bridge cavity 31, and a transmission cavity 32. The front part of the transmission 3 of the mountainous tractor is fixedly connected with the diesel engine 1 shell, and the rear part is fixedly connected with the front part of the axle housing 521 of the soft hinge over-bridge device 5. The rear part of the hinge seat 525 of the soft hinge over-bridge device 5 is fixedly connected with the agricultural machinery power box 6, and the rear part of the agricultural machinery power box 6 is fixedly connected with the rear axle.

[0066] As Figure 1The front end spline of the clutch shaft tooth 21 is fixedly engaged with the inner spline of the power output interface of the diesel engine 1, the shaft neck of the clutch shaft tooth 21 is mounted on the front end upper portion of the two-way cavity 33 of the transmission 3 through a bearing, and the forward tooth 331 is slidingly mounted on the front end of a shaft 321. The small tooth position of the rear end gear of the clutch shaft tooth 21 is slidingly and internally engaged with the inner tooth of the forward tooth 331 in the two-way cavity 33; and the front shaft head of a shaft 321 is rotatably mounted in the central hole of the rear end of the clutch shaft tooth 21. The input end of the connecting tooth 333 in the two-way cavity 33 is engaged with the large gear of the clutch shaft tooth 21, the output end of the connecting tooth 333 is fixedly and externally engaged with the reverse tooth 332, and the forward tooth 331 is slidingly and externally engaged with the reverse tooth 332. The transmission cavity 32 comprises a shaft 321, a toothed two-shaft 322, a gear tooth 323, a power tooth 325, a hydraulic bevel gear pair 326, a sliding connecting tooth 327, a power shaft 328, and a hollow shaft 329. The rear part of the shaft 321 is fixedly connected with the front shaft head of the toothed two-shaft 322 through a connecting sleeve 5119, and the gear on the toothed two-shaft 322 is slidingly engaged with the gear of the gear tooth 323. The gear tooth 323 is slidingly mounted on the hollow shaft 329, and the outer end of the hollow shaft 329 is axially drivingly connected with the sun gear 41 of the speed regulator 4.

[0067] When the clutch 2 is operated to be engaged, the power flows into the two-way cavity 33 through the clutch shaft tooth 21, and when driving forward, the forward tooth 331 is slidingly and internally engaged with the small tooth of the rear end gear of the clutch shaft tooth 21, at this time, the shaft 321 is driven by the forward tooth 331. The shaft 321 drives the toothed two-shaft 322 through the connecting sleeve 5119. The gear tooth 323 is engaged with any gear on the toothed two-shaft 322, the hollow shaft 329 is driven and drives the sun gear 41 connected therewith.

[0068] As shown in the drawings, Figure 2 The planetary carrier 43 is uniformly distributed with a plurality of second planetary shafts 431 along a graduated circle, and the planetary wheel 42 is rotatably mounted on the second planetary shaft 431. The sun gear 41 is externally engaged with the planetary wheel 42. At this time, the planetary wheel 42 is driven, the planetary wheel 42 drives the gear ring 44 in internal engagement, drives the gear ring carrier 45, and drives the planetary carrier 43 to rotate around the sun gear 41. The planetary carrier 43 drives the connector 5120 connected therewith, and the connector 5120 drives the front seat 514 connected therewith.

[0069] As shown in the drawings, Figure 1 The rear end of the front seat 514 is fixedly connected with the shaft support 518 and the lock seat 519 through bolts, and the three are combined and rotatably mounted in the bridge housing 521 of the bridge member 52 through the bearing set 53. The shaft support 518 is clamped on the abutting end faces of the front seat 514 and the lock seat 519.

[0070] AsFigure 1 The front seat 514 drives the shaft bracket 518 and lock seat 519 fixedly connected to it; the shaft bracket 518 drives the planetary bevel gear 516 through the bevel gear shaft 517 fixedly mounted on it, and the front differential gear 515 and rear differential gear 5110 meshing with the planetary bevel gear 516 rotate accordingly; the front differential gear 515 and rear differential gear 5110 respectively drive the shaft seat 512 and key shaft 5113 meshing with their end face keys. The shaft seat 512 driven by the front differential gear 515 drives the front shaft 511 through the internal spline, and the small bevel gear at the front end of the front shaft 511 then drives the large bevel gear 311 located in the bridge cavity 31 that meshes with it. The key shaft 5113, driven by the key on the end face of the rear differential tooth 5110, drives the locking ring 5112, which is slidably mounted with its external spline. The locking ring 5112 then drives the shaft fork tooth 5117 that meshes with it. The shaft fork tooth 5117 drives the lower constant velocity universal joint 5114, which is fixed in the inner hole. The lower constant velocity universal joint 5114 drives the rear shaft 64, which is fixedly connected to it, through the connecting sleeve 5119. The rear shaft 64 drives the large bevel tooth 71 of the rear axle 7 that meshes with it through the small bevel tooth at the rear end.

[0071] like Figure 1 As shown, the large bevel gear 311 / 71 of the axle cavity 31 / rear axle 7 is coaxially fixed to the differential housing 318 / 71. A transverse shaft 3182 / 7112 is fixedly installed in the central hole of the differential housing 318 / 71. The planetary gears 3184 / 7114 are rotatably mounted on the planetary shafts 3183 / 7113, which are symmetrically fixed to the differential housing 318 / 711. The left and right differential gears 3181 / 7111 are rotatably mounted on the transverse shafts 3182 / 7112 and mesh with the planetary gears 3184 / 7114. Thus, the rotating large bevel gear 311 / 71 drives the differential 318 / 71 while simultaneously driving the transverse shafts 3182 / 7112 and the planetary shafts 3183 / 7113. The planetary shaft 3183 / 7113 then drives the planetary gears 3184 / 7114 to drive the left and right differential gears 3181 / 711 that mesh with it. The driving gear 312 / 72, which meshes with the key at the tail end of the left and right differential gears 3181 / 7111, rotates accordingly. The driving gear 312 / 72 simultaneously drives the driven gear 313 / 73 and the braking gear 314 / 74 that mesh with it. The driven gear 313 / 73 drives the running gear 319 / 79, which is fixed to it, to deliver traveling power, so that the tractor can travel in the forward direction.

[0072] When power flows through the clutch shaft tooth 21 into the two-way cavity 33 of the transmission 3, if the positive tooth 331 engages with the reverse tooth 332. The large tooth position of the rear gear of the clutch shaft tooth 21 is always engaged with the input end gear of the connecting tooth 333, and the reverse tooth 332 is always engaged with the output end gear of the connecting tooth 333. At this time, the positive tooth 331 obtains reverse driving force, and drives a shaft 321, which in turn drives a toothed two shaft 322 through a connecting sleeve 5119. Then, the power flows through the path as described above, and finally the left and right half shafts 316 / 76 deliver reverse walking power to the walking system 319 / 79 to realize the reverse travel of the tractor

[0073] As shown in Figure 1 , because the outer teeth of the gear ring 44 are engaged with the speed regulating wheel 46, the speed regulating wheel 46 is fixed on the output shaft of the electric motor or other power driver 47. After removing the braking force f, starting the electric motor or other power driver 47, the speed regulating wheel 46 is driven by the output shaft of the electric motor or other power driver 47, and drives the planetary gear 42 through the engagement with the gear ring 44. The planetary gear 42 driven by the sun gear 41 is driven by the gear ring 44 at this time, and simultaneously drives the planet carrier 43; when the two power flows introduced by the sun gear 41 and the gear ring 44 rotate in the same direction, the planet carrier 43 rotates at an increased speed, and when the two power flows rotate in opposite directions, the planet carrier 43 rotates at a reduced speed. The planet carrier 43 in turn drives the connector 5120 connected thereto, and the front seat 514 connected to the connector 5120. Subsequently, the power flows through the path as described above, and finally realizes the stepless variable speed travel of the tractor. Because the gear ring 44 is in floating transmission in the above structure, it bears small torque, and can realize the purpose of changing large power flow with small power flow. When the motor or other power driver 47 is stopped, and the braking force f is applied to the output shaft or the speed regulating wheel 46, the gear ring 44 is locked by the speed regulating wheel 46, and the planet carrier 43 returns to normal mechanical transmission.

[0074] As shown in Figure 1 , the brake 317 / 77 is applied with the force F, and the brake tooth 314 / 74 fixed on the shaft spline in the brake 317 / 77 is subjected to the braking force applied by the spline, and is slowed down or braked, and through the engagement with the driving tooth 312 / 72, the driven tooth 313 / 73 is braked with the half shaft 316 / 76, so that the walking system 319 / 79 fixed on the half shaft 316 / 76 realizes the speed reduction or braking of the tractor.

[0075] As shown in Figure 1As shown, the shaft extension of the left drive gear 72 of the rear axle 7 is splinedly engaged with the differential lock 75. When one wheel of the tractor slips, the differential lock 75 is moved towards the large bevel gear 71, and the locking pins 751 distributed on it are inserted into the pin holes on the back of the bevel gear 71. At this time, the large bevel gear 71 drives the left drive gear 72, which is engaged with it in the spline, through the locking pins 751. The left drive gear 72 then drives the planetary gear 7114, which is engaged with it, through the left differential gear 7111, which is engaged with it in the tail key. The planetary gear 7114 then drives the right drive gear 72, which is engaged with it in the right differential gear 7111, to rotate at the same speed, thereby eliminating the slippage of a single wheel and improving the overall passability of the machine.

[0076] like Figure 1 As shown, when the resistance torque experienced by the front and rear travel systems mounted on the left and right half-shafts 316 / 76 differs, this feedback to the front differential gear 515 and rear differential gear 5110 of the axle 5 causes a change in rotational resistance torque. The side with the greater resistance torque will experience a decrease in speed. At this time, the planetary bevel gear 516 of the axle 5 maintains a constant speed, and the differential gear with relatively less resistance is then driven by the planetary bevel gear 516 to increase its speed, causing the system to tend towards balance, thereby achieving differential rotation between the front and rear axles. This structure eliminates the internal power flow between the transmission 3 and the rear axle 7.

[0077] like Figures 1-5 As shown, when the fork 5116 of the bridge 5 is moved, the locking ring 5112, which is slidably mounted on the key shaft 5113, moves toward the lock seat 519. Several locking pins 5111 fixed on the front end face of the locking ring 5112 are inserted into the lock hole on the rear end face of the lock seat 519. At this time, the locking ring 5112 rotates at the same speed as the lock seat 319; the rear end protruding key of the rear differential tooth 5110 engages with the key on the end face of the keyway at the front end of the key shaft 5113, and is simultaneously rotatably mounted on the rear part of the central shaft 513; the locking ring 5112 is slidably mounted on the external spline of the key shaft 5113, so the locking ring 5112 simultaneously drives the rear differential tooth 5110, which engages with its end face key, to rotate at the same speed. The rear differential gear 5110, through the planetary bevel gear 516, causes the front differential gear 515, which meshes with it, to rotate at the same speed. The bearing seat 512, which meshes with the end face key of the front differential gear 515, drives the front axle 511, which meshes with it, to rotate at the same speed. The system is restored to the same speed four-wheel drive condition, which can solve the problem of the front or rear tires of the tractor slipping and causing driving obstruction.

[0078] like Figure 1 As shown, when the clutch 2 is engaged, power flows through the clutch shaft teeth 21 into the bidirectional cavity 33 of the transmission 3, causing the forward teeth 331 to engage with the small teeth of the rear gear of the clutch shaft teeth 21. At this time, the shaft 321 is driven by the forward teeth 331. Figure 1The one shaft 321 drives the toothed second shaft 322 through the connecting sleeve 5119. The toothed second shaft 322 drives the power tooth 325 fixed at the rear end, which is in mesh with the pinion of the sliding gear 327. The sliding gear 327 is installed on the power shaft 328. The power shaft 328 is provided with the hydraulic bevel gear pair 326. The rear end of the power shaft 328 is fixedly connected with the input tooth of the indexing gear pair 5121. The output tooth of the indexing gear pair 5121 is fixedly connected with the front axle fork of the upper constant velocity universal shaft 5114. When the sliding gear 327 is moved to mesh the pinion at the front end with the power tooth 325, the power shaft 328 is driven and drives the indexing gear pair 5121 fixed thereon. The indexing gear pair 5121 drives the upper constant velocity universal shaft 5114 fixed thereon, which drives the input shaft 61 of the agricultural machine power box 6 through the connecting sleeve 5119. The input shaft 61 drives the gear 65 through the input tooth 62 fixed thereon, which drives the output tooth 63 in mesh therewith, which drives the power output shaft 78 fixed in the shaft hole. Figure 1 The power flows through the same path to finally drive the power output shaft 78, which provides the working torque for the agricultural machine at the standard speed.

[0079] As shown in Figures 1-5 The bridge housing 521 and the hinge body 522 of the soft hinge bridge 5 are hinged as a whole, which not only obtains the torsion angle and the folding steering angle, but also adds the bending angle. The embodiment is shown in Figure Three The embodiment is shown in

[0080] As shown in Figures 1-9As shown, the front end of the axle housing 521 is fastened to the rear end of the transmission 3, and the rear end of the axle housing 521 is provided with an upper seat plate 5212 and a lower seat plate 5213. The two sides of the upper seat plate 5212 are respectively provided with a vertical rod 5224, and a steering oil cylinder 5225 is installed on the vertical rod 5224. The upper seat plate 5212 and the lower seat plate 5213 are respectively provided with bearing holes on the same vertical axis on the symmetry center line, and a joint bearing 5211A or a tapered roller bearing 5211B is installed in the hole. The front end of the hinge body 522 is provided with an upper vertical shaft fork 5222 and a lower vertical shaft fork 5223, and the vertical shaft fork is respectively provided with a vertical shaft hole on the same vertical axis on the symmetry center line. One of the vertical shafts 5221 is sequentially installed in the upper plate hole of the upper vertical shaft fork 5222, the joint bearing 5211A or the tapered roller bearing 5211B hole of the upper seat plate 5212 of the axle housing 521, and the lower plate hole of the upper vertical shaft fork 5222, forming an upper hinge point. The other vertical shaft 5221 is sequentially installed in the lower plate hole of the lower vertical shaft fork 5223, the joint bearing 5211A or the tapered roller bearing 5211B hole of the lower seat plate 5213A of the axle housing 521, and the upper plate hole of the lower vertical shaft fork 5223, forming a lower hinge point. The axle housing 521 and the hinge body 522 are hinged together through the upper hinge point and the lower hinge point. As shown in the figure, Figure 4 As shown, when the tractor is driving and steering, the steering oil cylinder 5225 is operated to push and pull the hinge body 522 through the left and right vertical rods 5224, so that the hinge body 522 swings left and right in the driving process, and the rear vehicle body swings left and right around the vertical shaft 5221 at the upper and lower hinge points as the center, so as to generate a left and right folding steering angle, and realize the steering requirement of the tractor.

[0081] The rear end of the hinge body 522 is a hollow shaft body, and a groove is formed in the shaft body along the diameter direction. A ring claw 523 is rotatably installed in the groove of the hinge body 522. As shown in the figure, Figure 4 The ring claw 523 is also provided with left and right shaft ears, and the left and right shaft ears of the ring claw 523 are rotatably installed in the holes of the left and right supports of the hinge seat 525, and the hinge seat 525 is fixedly installed at the front end of the agricultural machinery power box 6. The damping disc or damper 524 is installed between the ring claw 523 and the hinge seat 525. As shown in the figure, Figure 3 As shown, when the tractor is driving in the mountain area, climbing and passing through the valley, under the a working condition, the tractor is affected by gravity and is pressed at the hinged upper part of the axle housing 521 and the hinge body 522, so that the left and right shaft ears of the ring claw 523 rotate between the holes of the left and right supports of the hinge seat 525, and a bending angle is generated. At this time, the elastic element 5241 at the upper part of the damping disc or damper 524 is compressed by the extrusion force applied by the axle housing 521 and the hinge seat 525, and the lower part is stretched by the stretching force of the axle housing 521 and the hinge seat 525, so that the tractor generates a "+" bending angle. Similarly, as shown in the figure, Figure 5 Under the b working condition, a "-" bending angle is generated. This makes the front and rear vehicles of the tractor run freely on the ground in the mountain area, and has good terrain simulation characteristics. Further, the reliability of the four-wheel drive of the tractor in the mountain area is ensured.Figure 6 As shown, when the tractor is running in the mountain, the height difference between the left and right wheels appears, and the torque is generated between the left and right wheels due to the displacement of the center of gravity, and acts on the axle housing 521 and the hinge seat 525. At this time, the hinge body 522 and the ring claw 523 bear opposite torsion, so that the ring claw 523 rotates relatively in the groove of the hinge body 522. Figure 6 As shown, the hinge body 522 drives the transmission 3 through the transmission body 4 or the hinge seat 525 drives the rear axle 7 through the agricultural power box 6 to twist, and a torsion angle is generated to meet the requirement of full ground contact of the left and right wheels.

[0082] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A mountain articulated tractor, comprising a transmission system, characterized in that, The transmission system includes a diesel engine (1), a clutch (2), a gearbox (3), a speed governor (4), a flexible hinge bridge (5), an agricultural machinery power box (6), and a rear axle (7). The clutch (2) includes clutch shaft teeth (21); The transmission (3) includes a bidirectional cavity (33), a bridge cavity (31) and a shift cavity (32) arranged in sequence. The speed regulator (4) includes a sun gear (41), planet gears (42), a planet carrier (43), a gear ring (44), and a gear ring carrier (45). The soft hinge bridge (5) includes a transmission component (51) and a bridge component (52). The bridge component (52) includes a bridge shell (521), a hinge body (522), a ring claw (523), a damper (524), and a hinge seat (525). The front section of the transmission (3) is fixedly connected to the housing of the diesel engine (1), and the rear end is fixedly connected to the front end of the flexible hinge bridge (5). The rear end of the flexible hinge bridge (5) is fixedly connected to the agricultural machinery power box (6), and the rear end of the agricultural machinery power box (6) is fixedly connected to the rear axle (7). The transmission (3) has a shaft (321) connected to the clutch (2) in its bidirectional cavity (33) and axle cavity (31). The shaft (321) is connected to the toothed shaft (322) through a connecting sleeve (5119). The toothed shaft (322) is located in the transmission cavity (32). A hollow shaft (329) is rotatably arranged in the transmission cavity (32). The extended end of the hollow shaft (329) inside the transmission chamber (32) is driven and connected to the sun gear (41) of the speed regulator (4). The hollow shaft (329) is mounted on the cavity of the transmission chamber (32) through a bearing assembly (53). The planet carrier (43) has multiple second planet shafts (431) evenly distributed along the pitch circle. The planet gears (42) are rotatably mounted on the second planet shafts (431). The sun gear (41) and the planet gears (42) are externally meshed. The planetary gear (42) meshes internally with the gear ring (44), and the gear ring (44) is fixedly connected to the gear ring carrier (45); the front end of the gear ring carrier (45) is rotatably mounted on the outside of the bearing assembly (53); the rear axle extension of the planetary carrier (43) is rotatably mounted on the partition of the bridge housing (521); the inner hole of the rear axle extension of the planetary carrier (43) is driven to connect with the front end of the connector (5120); the rear end of the connector (5120) is driven to connect with the front seat (514). The hollow shaft (329) is rotatably equipped with a front shaft (511). One end of the front shaft (511) is driven to be connected to the bearing seat (512), and the other end is connected to the first large bevel tooth (311) of the bridge cavity (31) to drive the movement of the walking system (319) in the bridge cavity (31). The front end of the bridge housing (521) of the soft hinge bridge (5) is connected to the rear end of the transmission (3). The rear end of the bridge housing (521) is provided with an upper seat plate (5212) and a lower seat plate (5213). The upper seat plate (5212) and the lower seat plate (5213) are respectively provided with bearing holes on the same vertical axis located on the center line of symmetry. The bearing holes are provided with spherical bearings. The front end of the hinge body (522) is provided with an upper vertical shaft fork (5222) and a lower vertical shaft fork (5223). The upper vertical shaft fork (5222) and the lower vertical shaft fork (5223) are respectively provided with vertical shaft holes on the same vertical axis located on the center line of symmetry. The bearing holes are aligned with the vertical shaft holes and connected by vertical shafts (5221) to form the upper hinge point and the lower hinge point respectively. The outer teeth of the gear ring (44) mesh with the speed regulating wheel (46), which is fixed on the output shaft of the power drive (47).

2. The mountain articulated tractor according to claim 1, characterized in that, The bidirectional chamber (33) of the transmission (2) includes forward gears (331), reverse gears (332), and connecting gears (333); the shift chamber (32) includes gear teeth (323). The front end of the clutch shaft tooth (21) meshes with the power output interface of the diesel engine (1). The rear end gear of the clutch shaft tooth (21) is a combination of large and small teeth. Its small teeth slide and mesh with the internal teeth of the forward teeth (331). The forward teeth (331) are slidably disposed at the front end of a shaft (321). The front end of the shaft (321) is rotatably mounted in the center hole of the small teeth of the clutch shaft tooth (21). The input end of the connecting tooth (333) meshes with the large teeth at the rear end of the clutch shaft tooth (21). The output end of the connecting tooth (333) meshes with the reverse teeth (332). The gear on the toothed shaft (322) in the gearbox (32) slides into engagement with the gear of the gear position tooth (323), and the gear position tooth (323) slides on the hollow shaft (329).

3. The mountain articulated tractor according to claim 1, characterized in that, The transmission chamber (32) of the transmission (2) also includes a power gear (325), a hydraulic bevel gear pair (326), a sliding coupling gear (327), and a power shaft (328). The agricultural machinery power box (6) includes an input gear (62), an output gear (63), a rear axle (64), and a connecting gear (65). The power gear (325) is fixedly mounted on the rear end extension of the toothed double shaft (322) in the transmission chamber (32). The power gear (325) meshes with the small teeth of the sliding coupling gear (327). The sliding coupling gear (327) is slidably mounted on the power shaft (328). The sliding coupling gear (327) is a combination of large and small teeth. The sliding coupling gear (327) is slidably mounted on the power shaft (328). The power shaft (328) is equipped with a hydraulic bevel gear pair (326) that provides working power to the tractor hydraulic system. A rotary gear pair (5) is fixed at the rear end of the power shaft (328). 121), the indexing gear pair (5121) includes an input tooth and an output tooth. The input tooth is connected to the rear end of the power shaft (328), and the output tooth is mounted on the front axle fork of the upper constant velocity universal joint (5114). The constant velocity universal joint (5114) has two shafts, one upper and one lower. The rear axle fork is rotatably mounted on the front end of the shaft hole of the hinge body (522). The rear axle fork of the constant velocity universal joint (5114) passes through the shaft hole of the hinge body (522) and is connected to the upper input shaft (61) of the agricultural machinery power box (6) via the connecting sleeve (5119). The other shaft is connected to the lower rear axle (64) of the agricultural machinery power box (6). The input gear (62) of the agricultural machinery power box (6) is fixedly mounted on the input shaft (61) and meshes with the front large gear of the connecting gear (65); the rear shaft (64) is rotatably mounted on the agricultural machinery power box (6), and its rear small bevel gear extends into the rear axle (7); the connecting gear (65) is rotatably mounted on the rear shaft (64), and its rear small gear meshes with the output gear (63); the shaft extension of the output gear (63) is mounted on the housing of the agricultural machinery power box (6) through a bearing; and the power output shaft (78) is fixedly mounted in the shaft extension hole of the output gear (63) through the rear axle (7).

4. The mountain articulated tractor according to claim 1, characterized in that, The axle cavity (31) of the transmission (3) includes a first large bevel gear (311), a first driving gear (312), a first driven gear (313), a first brake gear (314), a first half-shaft (316), a first brake (317), a first differential (318), and a first running gear (319); the front end of the front axle (511) is provided with a small bevel gear that meshes with the first large bevel gear (311), and the first large bevel gear (311) is coaxially fixed to the housing of the first differential (318); the first differential (318) is provided with a first transverse shaft (3182), and the first driving gear (312) The first drive gear (312) is rotatably mounted on the left and right ends of the first horizontal shaft (3182); the first drive gear (312) meshes with the first driven gear (313) and the first brake gear (314) at the same time; the first driven gear (313) can drive the first travel system (319) fixed thereto to output travel power; the first brake gear (314) is connected to the shaft of the first brake (317); the first half shaft (316) is symmetrically arranged on the left and right, and a first driven gear (313) is fixed on each side of the first half shaft (316), and the extended end of the first half shaft (316) is connected to the first travel system (319).

5. The mountain articulated tractor according to claim 4, characterized in that, The first differential (318) of the bridge cavity (31) includes a first differential tooth (3181), a first planetary shaft (3183), and a first planetary tooth (3184). The first planetary tooth (3184) is rotatably mounted on the first planetary shaft (3183) and there are two of them arranged symmetrically in front and behind. The first planetary shaft (3183) is fixed on the housing of the first differential (318). There is one first differential tooth (3181) in the left and right directions. The first differential tooth (3181) is rotatably mounted on the first horizontal shaft (3182). The first differential tooth (3181) meshes with the first planetary tooth (3184).

6. The mountain articulated tractor according to claim 1, characterized in that, The rear axle (7) includes a second large bevel gear (71), a second active gear (72), a second passive gear (73), a second brake gear (74), a second half-shaft (76), a second brake (77), a second travel system (79), and a second differential (711); the second large bevel gear (71) is coaxially fixed to the housing of the second differential (711); the second differential (711) is provided with a second horizontal shaft (7112), and the second active gear (72) is rotatably mounted on the left and right ends of the second horizontal shaft (7112); the second active gear (72) simultaneously meshes with the second passive gear (73) and the second brake gear (74); the second passive gear (73) can drive the second travel system (79) fixed to it to output travel power; the second brake gear (74) is axially connected to the second brake (77); the output end of the agricultural machinery power box (6) is provided with a small bevel gear that meshes with the second large bevel gear (71).

7. The mountain articulated tractor according to claim 6, characterized in that, The second differential (711) of the rear axle (7) includes a second differential gear (7111), a second planetary shaft (7113), and a second planetary gear (7114). The second planetary gear (7114) is rotatably mounted on the second planetary shaft (7113) and there are two of them arranged symmetrically in front and behind. The second planetary shaft (7113) is fixedly mounted on the housing of the second differential (711). There is one second differential gear (7111) in each of the left and right directions. The second differential gear (7111) is rotatably mounted on the second transverse shaft (7112). The second differential gear (7111) meshes with the second planetary gear (7114).

8. The mountain articulated tractor according to claim 6, characterized in that, The rear axle (7) also includes a differential lock (75), on which the shaft extension of the second drive tooth (72) arranged on the left side is slidably engaged with the differential lock (75).

9. The mountain articulated tractor according to claim 3, characterized in that, The transmission component (51) includes a front axle (511), a bearing seat (512), a central axle (513), a front seat (514), a front differential gear (515), a planetary bevel gear (516), a bevel gear shaft (517), a shaft bracket (518), a lock seat (519), a rear differential gear (5110), a locking pin (5111), a locking ring (5112), a key shaft (5113), an outer spherical bearing (5115), a shift fork (5116), a shaft fork gear (5117), a bridge gear (5118), and a connector (5120). The connector (5120) connects the speed regulator (4) and the front seat (514). The front seat (514) has a bridge tooth (5118) fixed at its front end and the rear end connected to the shaft bracket (518) and the lock seat (519). The front seat (514), shaft bracket (518), and lock seat (519) are connected as a whole and rotatably mounted in the bridge housing (521) via a bearing assembly (53). The lock seat (519) has two mating points at the front and rear positions, and the shaft bracket (518) is clamped on the mating end face of the lock seat (519). The outer radius of the shaft bracket (518) is... Multiple bevel gear shafts (517) are symmetrically mounted in the direction of the bevel gear shaft (517), and planetary bevel gears (516) are rotatably mounted on the bevel gear shaft (517). The left and right sides of the planetary bevel gears (516) simultaneously mesh with the front differential gear (515) and the rear differential gear (5110). The central hole of the shaft frame (518) is fitted with a central shaft (513), and the shaft seat (512) is rotatably mounted in the shaft extension hole of the front seat (514) through a bearing assembly (53). The shaft seat (512) meshes with the rear end of the front shaft (511), and the front end of the front shaft (511) is provided with a large... A small bevel tooth (311) meshes with a bevel tooth; the front shaft (511) is rotatably mounted in a hollow shaft (329) via a bearing assembly (53); the rear end of the differential tooth (5110) meshes with the front end face of the key shaft (5113) and is rotatably mounted on the rear part of the central shaft (513); the locking ring (5112) is slidably mounted on the key shaft (5113), and multiple locking pins (5111) are evenly distributed on the pitch circle of the front end face of the locking ring (5112); a shift fork (5116) is installed inside the locking ring (5112); the rear end of the lock seat (519) corresponds to the locking pin (5111). Multiple locking holes for sliding insertion of locking pins (5111) are provided at the pitch circle position of 111; the locking ring (5112) meshes with the shaft fork tooth (5117); there are two constant velocity universal joints (5114), the front shaft fork of the other constant velocity universal joint (5114) is fixed in the shaft fork tooth (5117), and the rear shaft fork passes through the shaft hole of the outer spherical bearing (5115) and the hinge (522) and is connected to the rear shaft on the agricultural machinery power box (6) through the connecting sleeve (5119). The outer spherical bearing (5115) is located at the front end of the hinge (522).

10. The mountain articulated tractor according to claim 1, characterized in that, The axle housing (521) includes a spherical bearing (5211A), an upper seat plate (5212) and a lower seat plate (5213), and the hinge (522) includes a vertical rod (5224) and a steering cylinder (5225). The upper seat plate (5212) and the lower seat plate (5213) are connected on both sides by a vertical rod (5224). A steering cylinder (5225) is installed on the vertical rod (5224). The vertical rod (5224) pushes and pulls the hinge (522) so that the vertical shaft (5221) on the upper and lower hinge points of the rear vehicle body is the rotation center and swings left and right during the movement.

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