A hill crawler tractor

Abstract

The present invention provides a hilly crawler tractor. The hilly crawler tractor includes a transmission system, which includes a diesel engine, a clutch, a transmission, a speed regulator and an agricultural machinery power box; the transmission includes a two-way cavity, a bridge cavity and a speed change cavity arranged in sequence; one end of the two-way cavity away from the bridge cavity is fixedly connected to the housing of the diesel engine, the rear end of the transmission is arranged at the speed regulator arranged adjacent to the speed change cavity, and the rear end of the transmission housing is fixedly connected to the agricultural machinery power box; the clutch includes clutch shaft teeth; the two-way cavity includes forward teeth, reverse teeth, and connecting teeth; the speed change cavity includes one shaft, two shafts with teeth, gear teeth, power take-off shaft teeth, power teeth, power shaft, power sliding teeth, front shaft, hollow shaft, functional teeth, matching teeth, indexing teeth, fixed teeth and power take-off shaft teeth. The present invention solves the defects of the prior art products and resolves the disadvantage that it is difficult to form large-scale production of hilly crawler tractors in hilly and mountainous areas.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a hill crawler tractor. Background Art

[0002] With the deepening of agricultural machinery modernization, the demand for the combination of agricultural machinery and agronomy has become more urgent. The technical disadvantages of existing hill crawler tractors are as follows: (i) low hydraulic transmission efficiency, high-horsepower machines do the work of low-horsepower machines; (ii) high manufacturing and use costs; (iii) low utilization rate of hill crawler tractors throughout the year. These defects are contrary to the policy requirements of energy conservation, consumption reduction and emission reduction. Summary of the invention

[0003] The purpose of the present invention is to provide a hill crawler tractor, strive to improve the cost performance and annual utilization rate of the hill crawler tractor, achieve high efficiency and low cost, and increase the economic and social benefits of production enterprises and users.

[0004] The technical solution of the present invention is: a hill crawler tractor, comprising a transmission system, wherein the transmission system comprises a diesel engine, a clutch, a transmission, a speed governor and an agricultural machinery power box;

[0005] The clutch includes clutch shaft teeth;

[0006] The transmission comprises a bidirectional chamber, a bridge chamber and a speed-changing chamber arranged in sequence; one end of the bidirectional chamber away from the bridge chamber is fixedly connected to the housing of the diesel engine, the rear end of the transmission is arranged on the speed regulator arranged adjacent to the speed-changing chamber, and the rear end of the transmission housing is fixedly connected to the power box of the agricultural machinery;

[0007] The speed regulator includes a sun gear, planetary gears, a planet carrier, a ring gear and a ring gear carrier;

[0008] The bidirectional cavity of the transmission includes forward teeth, reverse teeth, and coupling teeth; the speed change cavity of the transmission includes a first shaft, a second shaft with teeth, a gear position tooth, a power take-off shaft tooth, a power tooth, a power shaft, a power sliding tooth, a front shaft, a hollow shaft, a functional tooth, a matching tooth, a shifting tooth, and a fixed tooth;

[0009] The front end of the clutch shaft teeth of the clutch is meshed with the power output interface of the diesel engine, and the rear end of the clutch shaft teeth is respectively meshed with the forward teeth and the coupling teeth. The forward teeth are slidably arranged at the front end of a shaft and are externally meshed with the reverse teeth; the coupling teeth are externally meshed with the reverse teeth.

[0010] The rear end of one shaft of the transmission chamber is connected to the front end of the second shaft with teeth through a connecting sleeve, and the gears on the second shaft with teeth are slidably engaged with the gear teeth, and the gear teeth are slidably mounted on the hollow shaft;

[0011] The extended end of the hollow shaft of the transmission cavity is drivingly connected to the sun gear of the speed regulator, the planet carrier of the speed regulator is fixed on the wall of the speed regulator cavity, and the hollow shaft is installed on the wall of the speed regulator cavity through a bearing group;

[0012] The rear end of the geared two-shaft of the transmission chamber is fixed with power teeth, and the power sliding teeth are of internal and external tooth structures, the power teeth are externally meshed with the power sliding teeth, and the power sliding teeth are internally meshed with the gear at the rear end of the power take-off shaft teeth; the front end of the power shaft is rotatably mounted in the gear at the rear end of the power take-off shaft teeth, and the power sliding teeth are slidably mounted on the power shaft; the rear end of the power shaft is fixed with indexing teeth, and the functional teeth slide on the input shaft mounted on the power box of the agricultural machinery, so that the indexing teeth, matching teeth, functional teeth and fixed teeth are respectively meshed during the forward sliding process of the functional teeth, and the fixed teeth are fixed on the inner wall of the transmission chamber;

[0013] The planetary carrier of the speed regulator is evenly distributed with multiple second planetary shafts along the pitch circle, and the planetary gears are rotatably mounted on the second planetary shafts; the sun gear is meshed with the planetary gears externally; the planetary gears are meshed with the gear ring internally, and the gear ring is fixedly connected to the gear ring carrier; the front end of the gear ring carrier is rotatably mounted on the outside of the bearing group; the rear shaft extension of the planetary carrier is rotatably mounted on the inner partition of the speed change chamber; the inner hole of the rear shaft extension of the planetary carrier is drivingly connected to the front end of the connector. The rear end of the connector is fixedly connected to the matching gear;

[0014] The front axle of the speed change chamber is rotatably mounted in the hollow shaft, one end of the front axle is drive-connected to the connector, and the other end is connected to the large bevel gear of the bridge chamber to drive the travel system in the bridge chamber.

[0015] Preferably, the bridge cavity of the transmission also includes large bevel gears, driving gears, passive gears, brake gears, half shafts, brakes and differentials; the front end of the front shaft is provided with small bevel gears meshing with the large bevel gears, and the large bevel gears are fixed coaxially with the differential housing; a transverse shaft is provided in the differential, and the driving gears are rotatably mounted on the left and right ends of the transverse shaft; the driving gears are meshed with the passive gears and brake gears at the same time; the passive gears can drive the traveling system fixed thereto to output traveling power; the brake gears are connected to the shaft of the brake; the half shafts are symmetrically arranged on the left and right, and a passive gear is fixed on each side of the half shafts, and the protruding ends of the half shafts are connected to the traveling system.

[0016] Preferably, the bridge cavity further comprises a steering bevel gear pair having input teeth and output teeth, the input teeth are fixedly mounted on the front end of the power take-off shaft teeth, and the output teeth are connected to the shaft of the brake located on the right side; the brake is fixed on the outer shell of the bridge cavity.

[0017] Preferably, the differential of the bridge cavity includes differential teeth, a first planetary shaft and planetary teeth. The planetary teeth are rotatably mounted on the first planetary shaft and two are symmetrically arranged front and back. The first planetary shaft is fixedly mounted on the housing of the differential. The differential teeth are each provided with one in the left and right directions. The differential teeth are rotatably mounted on the horizontal axis, and the differential teeth are meshed with the planetary teeth.

[0018] Preferably, the active tooth of the bridge cavity is engaged with the tail end of the differential tooth by an end face key.

[0019] Preferably, the speed regulator also includes a speed regulating wheel and an electric motor, the ring gear is externally meshed with the speed regulating wheel, and the speed regulating wheel is drivingly connected to the electric motor.

[0020] Preferably, the agricultural machinery power box includes input teeth, output teeth, a fixed shaft, connecting teeth and a power output shaft, the input teeth are fixed on the input shaft, both ends of the fixed shaft are fixed in the agricultural machinery power box, the front end of the connecting teeth is meshed with the input teeth, the rear end of the connecting teeth is meshed with the output teeth, the shaft extension end of the output teeth is installed on the housing of the agricultural machinery power box, and the power output shaft is fixed in the shaft extension hole of the output teeth.

[0021] Preferably, the functional teeth of the speed change chamber are internal and external tooth structures, wherein the external teeth respectively mesh with the indexing teeth, the matching teeth and the functional teeth externally during sliding, and the internal teeth mesh with the fixed teeth internally.

[0022] Compared with the related art, the present invention has the following beneficial effects:

[0023] 1. The transmission system of the present invention breaks the traditional design of hilly crawler tractors, and uses a combination of automobile standard gearbox + functional unit to achieve a multi-type chassis layout. It resolves the problem that enterprises find it difficult to organize large-scale production under the circumstances of large differences in demand for hilly crawler tractors and self-propelled agricultural machinery chassis, small batches, and shortage of product standards, resulting in high manufacturing costs and high use costs.

[0024] Second, the rear power confluence infinitely variable speed technology of the present invention adopts the energy-saving and quality-improving idea of ​​adjusting the output of large power flow with small power flow, which solves the embarrassment of high cost and low working efficiency of power transmission models that have long troubled enterprises; and the technical conflict that the torque of the rear power confluence is small and cannot meet the terminal large torque output of the transmission system of hilly crawler tractors. While improving efficiency and reducing costs, the walking speed of hilly crawler tractors and the working speed of agricultural machinery can be infinitely variable by electric or other power sources.

[0025] 3. The present invention adopts the side-drive on-the-spot steering technology, which is not only direct and efficient, but also greatly reduces the manufacturing cost and use cost of hilly crawler tractors compared to the hydraulic system dual-motor driven on-the-spot steering technology.

[0026] 4. The bidirectional driving function of the present invention improves the ability of hilly crawler tractors to adapt to agronomic needs:

[0027] 5. The implementation of the above technologies gives the hilly crawler tractor the ability to perform mechanized operations throughout the entire process, greatly improving the annual utilization rate of agricultural machinery and equipment. The technology of the present invention focuses on energy saving, consumption reduction and emission reduction throughout the entire process, so that the hilly crawler tractor can be used with high efficiency and low consumption, and the entire life cycle is green. It has good economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of the transmission system of the hilly crawler tractor provided by the present invention;

[0029] Figure 2 for Figure 1 An enlarged schematic diagram of the speed regulator 4 in FIG. DETAILED DESCRIPTION

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0031] like Figure 1 As shown, a hill crawler tractor provided in this embodiment includes a transmission system, and the transmission system includes a diesel engine 1, a clutch 2, a transmission 3, a speed governor 4 and an agricultural machinery power box 5.

[0032] The clutch 2 includes clutch shaft teeth 21 .

[0033] The transmission 3 includes a bidirectional chamber 33, a bridge chamber 31 and a speed change chamber 32 arranged in sequence. One end of the bidirectional chamber 33 away from the bridge chamber 31 is fixedly connected to the housing of the diesel engine 1, the rear end of the transmission 3 is arranged at the speed regulator 4 arranged adjacent to the speed change chamber 32, and the rear end of the housing of the transmission 3 is fixedly connected to the agricultural machinery power box 5.

[0034] The bidirectional cavity 33 of the transmission 3 includes forward teeth 331, reverse teeth 332, and coupling teeth 333, wherein the forward teeth 331 are internal and external teeth. The speed change cavity 32 of the transmission 3 includes a shaft 321, a second shaft 322 with teeth, a gear position tooth 323, a power take-off shaft tooth 324, a power tooth 325, a power shaft 326, a power sliding tooth 327, a front shaft 328, a hollow shaft 329, a bearing group 3210, a connector 3211, a functional tooth 3212, a matching tooth 3213, a shifting tooth 3214, and a fixed tooth 3215.

[0035] The speed regulator 4 includes a sun gear 41 , planetary gears 42 , a planet carrier 43 , a ring gear 44 , a ring gear carrier 45 , a speed regulating wheel 46 and an electric motor 47 .

[0036] The agricultural machinery power box 5 includes an input shaft 51 , input teeth 52 , output teeth 53 , a fixed shaft 54 ​​, coupling teeth 55 , and a power output shaft 56 .

[0037] The specific structure of the hill crawler tractor is as follows:

[0038] 1. Power input:

[0039] The hill crawler tractor is equipped with a "speed regulator", "side drive structure" and "bidirectional structure". The hill crawler tractor includes a diesel engine 1, a clutch 2, a clutch shaft gear 21, a transmission 3 and an agricultural machinery power box 5. The transmission 3 is composed of a bidirectional cavity 33, a bridge cavity 31 and a speed change cavity 32. Figure 1 As shown, the front part of the transmission 3 of the hill crawler tractor is fixedly connected to the housing of the diesel engine 1, the rear end of the transmission 3 is equipped with a speed regulator 4, and the rear part of the housing of the transmission 3 is fixedly connected to the agricultural machinery power box 5. The front spline of the clutch shaft gear 21 is meshed with the internal spline of the power output interface of the diesel engine 1, and the journal of the clutch shaft gear 21 is installed on the front upper part of the two-way cavity 33 of the transmission 3 through a bearing. The rear end gear of the clutch shaft gear 21 is a large and small coupling gear, and its small teeth are slidably meshed with the internal teeth of the forward teeth 331 in the two-way cavity 33. The forward teeth 331 are slidably mounted on the front end of a shaft 321. The front shaft head of the shaft 321 is rotatably mounted in the center hole at the rear end of the clutch shaft gear 21, and the large teeth of the rear end gear of the clutch shaft gear 21 are externally meshed with the input end gear of the coupling gear 333. The output end gear of the coupling gear 333 is externally meshed with the reverse teeth 332. The reverse teeth 332 are also slidably meshed with the forward teeth 331.

[0040] 2. Power diversion:

[0041] The rear part of the first shaft 321 is fixedly connected to the front shaft head of the second shaft with gears 322 through a connecting sleeve 5119, and the gear on the second shaft with gears 322 is slidably meshed with the gear of the gear gear 323. The gear gear 323 is slidably mounted on the hollow shaft 329, and the outer end of the hollow shaft 329 is axially fixedly connected to the sun gear 41 of the speed regulator 4. The hollow shaft 329 is mounted on the wall of the speed change chamber 32 through a bearing group 3210.

[0042] The rear end shaft extension of the toothed second shaft 322 is fixed with a power tooth 325, which meshes with the outer teeth of the power sliding tooth 327, and the power sliding tooth 327 is an inner and outer tooth structure. The power sliding tooth 327 is slidably mounted on the power shaft 326, and the front end of the power shaft 326 is rotatably mounted in the inner hole of the rear gear of the power take-off shaft tooth 324. The power sliding gear 327 is pushed forward, and the inner teeth at the front end thereof mesh with the inner gear of the rear part of the power take-off shaft gear 324; a shifting tooth 3214 is fixedly installed at the rear part of the power shaft 326, and the shifting tooth 3214 is slidingly meshed with the outer teeth of the functional tooth 3212; the functional tooth 3212 is an inner and outer tooth structure, and is slidably installed on the input shaft 51 of the agricultural machinery power box 5; the functional tooth 3212 is pushed forward, and the outer teeth thereof are displaced and meshed with the matching teeth 3213; the functional tooth 3212 is pushed forward again, and the inner teeth thereof mesh with the fixed teeth 3215; the fixed teeth 3215 are fixedly installed on the inner wall of the transmission cavity 32.

[0043] The input gear 52 of the agricultural machinery power box 5 is fixedly mounted on the input shaft 51 and meshes with the front large gear of the coupling gear 55. The coupling gear 55 is rotatably mounted on the fixed shaft 54, and the fixed shaft 54 ​​is fixedly mounted on the box body of the agricultural machinery power box 5. The small gear at the rear end of the coupling gear 55 meshes with the output gear 53. The shaft extension of the output gear 53 is mounted on the housing of the agricultural machinery power box 5 through a bearing. The power output shaft 56 is fixedly mounted in the shaft extension hole of the output gear 53. The front part of the power take-off shaft gear 324 is fixedly mounted with the input gear of the steering cone gear pair 3110.

[0044] 3. Power convergence and speed change: fixed connection;

[0045] The planetary carrier 43 is evenly distributed and fixed with several planetary shafts 431 along the pitch circle. The planetary shafts 431 are rotatably mounted with planetary gears 42. The sun gear 41 is externally meshed with the planetary gears 42, and the planetary gears 42 are internally meshed with the ring gear 44. The ring gear 44 is fixedly connected to the ring gear carrier 45, and the front end of the ring gear carrier 45 is rotatably mounted on the outside of the bearing group 3210. The rear axle extension of the planetary carrier 43 is rotatably mounted on the inner partition of the speed change chamber 32. The inner hole of the rear axle extension of the planetary carrier 43 is drivingly connected to the front end of the connector 3211. The rear end of the connector 3211 is fixedly connected to the matching teeth 3213. The shaft tail of the front shaft 328 is drivingly connected in the hole of the connector 3211. The shaft body of the front shaft 328 is rotatably mounted in the body of the hollow shaft 329 through the bearing group 3210. The small bevel teeth of the front shaft 328 are meshed with the large bevel teeth 311 in the bridge chamber 31.

[0046] The outer teeth of the gear ring 44 mesh with the outer side of the speed regulating wheel 46 , and the speed regulating wheel 46 is fixedly mounted on the output shaft of the electric motor or other power driver 47 .

[0047] 4. Driving terminal:

[0048] The large bevel gear 311 of the bridge cavity 31 is fixedly mounted coaxially with the differential 318 housing. A transverse shaft 3182 is fixedly mounted in the center hole of the differential 318 housing. The planetary gear 3184 is rotatably mounted on the planetary shaft 3183, which is symmetrically fixedly mounted on the differential 318 housing. The left and right differential gears 3181 are rotatably mounted on the transverse shaft 3182 and mesh with the planetary gears 3184. The active gear 312 is rotatably mounted on the left and right ends of the transverse shaft 3182 and meshes with the end face key of the tail end of the left and right differential gears 3181; the passive gear 313 is fixedly mounted on the left and right half shafts 316 and meshes with the active gear 312, and the extended end of the half shaft 316 is connected to the running system 319. The active gear 312 also meshes with the brake gear 314 of the brake 317, and the brake gear 314 is fixedly mounted on the shaft of the brake 317. The inner end of the shaft extension of the right brake 317 is also provided with output teeth of the steering bevel gear pair 3110. The brake 317 is fixedly mounted on the outer shell of the bridge chamber 31.

[0049] The function principle of the hill crawler tractor is as follows:

[0050] The hill crawler tractor is equipped with a "speed governor", "side drive structure" and "bidirectional structure". The hill crawler tractor includes a diesel engine 1, a clutch 2, a clutch shaft gear 21, a transmission 3, a speed governor 4 and an agricultural machinery power box 5. The "speed governor" is used to realize the stepless speed change of the hill crawler tractor; the "side drive structure" is used to realize the on-site steering of the hill crawler tractor; the "bidirectional structure" is used to realize the bidirectional driving of the hill crawler tractor and other functions. The following is a description in conjunction with the accompanying drawings:

[0051] like Figure 1 As shown, the transmission 3 includes a bidirectional chamber 33, a bridge chamber 31, and a speed change chamber 32. Figure 1 As shown, the front part of the transmission 3 of the hill crawler tractor is fixedly connected to the housing of the diesel engine 1, the rear end of the transmission 3 is equipped with a speed regulator 4, the rear part of the housing of the transmission 3 is fixedly connected to the agricultural machinery power box 5, the front end spline of the clutch shaft gear 21 is meshed with the internal spline of the power output interface of the diesel engine 1, and the shaft neck of the clutch shaft gear 21 is installed on the front end upper part of the two-way cavity 33 of the transmission 3 through a bearing. The rear end gear of the clutch shaft gear 21 is a large and small coupling gear, and its small teeth are slidably meshed with the internal teeth of the forward teeth 331 in the two-way cavity 33, and its large teeth are externally meshed with the input end gear of the coupling gear 333. The forward teeth 331 are slidably mounted on the front end of a shaft 321. The front shaft head of the shaft 321 is rotatably mounted in the center hole at the rear end of the clutch shaft gear 21. The output end gear of the coupling gear 333 is externally meshed with the reverse teeth 332, and the reverse teeth 332 are also slidably meshed with the forward teeth 331.

[0052] The rear part of the first shaft 321 is fixedly connected to the front shaft head of the second shaft 322 with teeth through the connecting sleeve 3111, and the gear on the second shaft 322 with teeth is slidably meshed with the gear of the gear gear 323. The gear gear 323 is slidably mounted on the hollow shaft 329, and the outer end of the hollow shaft 329 is axially fixedly connected to the sun gear 41 of the speed regulator 4. The hollow shaft 329 is mounted on the wall of the speed change chamber 32 through the bearing group 3210.

[0053] 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. When driving in the forward direction, the forward teeth 331 are moved to slide and mesh with the small teeth of the rear end gear of the clutch shaft teeth 21. At this time, a shaft 321 is driven by the forward teeth 331.

[0054] The first shaft 321 drives the second shaft 322 with teeth through the connecting sleeve 3111. The gear teeth 323 are meshed with any gear on the second shaft 322 with teeth, and the hollow shaft 329 is driven, and drives the sun gear 41 axially fixedly mounted thereon. Figure 2 The planet carrier 43 is evenly distributed and fixed with several planet shafts 431 along the pitch circle. The planetary gears 42 are rotatably mounted on the planetary shafts 431. The sun gear 41 is meshed with the planetary gears 42 externally, and the planetary gears 42 are driven. The planetary gears 42 in turn drive the ring gear 44 meshed with the sun gear 41 internally, driving the ring gear carrier 45 while causing the planetary carrier 43 to rotate around the centerline of the sun gear 41 axis; the planetary carrier 43 then drives the connector 3211 connected to it, and the connector 3211 in turn drives the front seat 328 connected to it. Figure 1 As shown, the small bevel gear at the front end of the front axle 328 then drives the large bevel gear 311 in the bridge cavity 31 that is meshed with it. The large bevel gear 311 in the bridge cavity 31 is fixedly mounted coaxially with the differential 318 housing. A transverse shaft 3182 is fixedly mounted in the center hole of the differential 318 housing. The planetary gear 3184 is rotatably mounted on the planetary shaft 3183, and the planetary shaft 3183 is symmetrically fixedly mounted on the differential 318 housing. The left and right differential gears 3181 are rotatably mounted on the transverse shaft 3182 and meshed with the planetary gear 3184. The rotating large bevel gear 311 simultaneously drives the transverse shaft 3182, the differential 318, and the planetary shaft 3183, and the planetary shaft 3183 drives the planetary gear 3184 to drive the left and right differential gears 3181 that are meshed with it. The active gear 312 that is meshed with the tail key of the left and right differential gears 3181 rotates accordingly. As shown Figure 1 As shown, the driving gear 312 is rotatably mounted on the left and right ends of the horizontal shaft 3182, and the driving gear 312 meshing with the end face key of the left and right differential teeth 3181 rotates accordingly. The driving gear 312 simultaneously drives the passive gear 313 and the brake gear 314 meshing with it. The passive gear 313 in turn drives the travel system 319 fixed thereto to deliver travel power, so as to realize the forward travel of the hill crawler tractor;

[0055] When the power flows through the clutch shaft gear 21 and enters the bidirectional cavity 33 of the transmission 3, the forward gear 331 is moved to mesh with the reverse gear 332. Because the rear end large gear of the clutch shaft gear 21 is constantly meshed with the input end gear of the coupling gear 333, and the reverse gear 332 is constantly meshed with the output end gear of the coupling gear 333. In other words: the forward gear 331 obtains the reverse driving torque through the engagement of the reverse gear 332 with the coupling gear 333, and drives the first shaft 321, and the first shaft 321 drives the second gear 322 with teeth through the connecting sleeve 3111. Afterwards, the power flows through the same path as described above, and finally the left and right half shafts 316 transmit reverse walking power to the walking system 319, realizing the reverse travel of the hill crawler tractor.

[0056] like Figure 1 , Figure 2 As shown, the outer teeth of the gear ring 44 mesh with the outer gear wheel 46, and the gear wheel 46 is fixed on the output shaft of the electric motor or other power driver 47. Remove the braking force f, start the electric motor or other power driver 47, and the gear 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 meshing with the gear ring 44. The planetary gear 42 driven by the sun gear 41 is driven by the gear ring 44, and at the same time, the planetary carrier 43 is driven; when the two power flows introduced by the sun gear 41 and the gear ring 44 rotate in the same direction, the planetary carrier 43 rotates faster, and when the two power flows rotate in opposite directions, the planetary carrier 43 rotates slower. The planetary carrier 43 drives the connector 5120 connected to it, and the connector 3211 drives the front axle 328 connected to it. Subsequently, the power flows through the same path as above, and finally realizes the stepless speed change of the hill crawler tractor. Because the gear ring 44 is in floating transmission in the above structure, it bears little torque, and can achieve the purpose of changing the large power flow with a small power flow. When the motor or other power driver 47 is stopped and a braking force f is applied to its output shaft or the speed regulating wheel 46, the ring gear 44 is locked by the speed regulating wheel 46, and the planet carrier 43 resumes normal mechanical speed change.

[0057] When force F is applied to the brake 317, the brake teeth 314 fixed on the spline of the inner shaft of the brake 317 are acted upon by the braking force applied by the spline and are decelerated or braked. The active teeth 312 meshing therewith constrain the passive teeth 313 to brake the half shaft 316, so that the traveling system 319 fixedly mounted on the half shaft 316 can achieve deceleration or braking of the hilly crawler tractor.

[0058] like Figure 1 As shown, when the clutch 2 is engaged, the power flows through the clutch shaft gear 21 into the bidirectional cavity 33 of the transmission 3, and the forward gear 331 is driven to slide and mesh with the small teeth of the rear end gear of the clutch shaft gear 21. At this time, the first shaft 321 is driven by the forward gear 331. Figure 1As shown, the first shaft 321 drives the second shaft 322 with teeth through the connecting sleeve 3111.

[0059] like Figure 1 As shown, a power tooth 325 is fixedly mounted on the rear end shaft extension of the toothed two-shaft 322. The power tooth 325 driven by the toothed two-shaft 322 then drives the power sliding tooth 327 meshing with its external teeth, and the power sliding tooth 327 in turn drives the power shaft 326 slidably mounted thereon. The power shaft 326 in turn drives the hydraulic bevel gear pair 3216 fixedly mounted thereon and the indexing tooth 3214 fixedly mounted at the rear thereof, and the indexing tooth 3214 in turn drives the functional tooth 3212 meshing with its external teeth. Since the functional tooth 3212 is an internal and external tooth structure and is slidably mounted on the input shaft 51 of the agricultural machinery power box 5, it can be seen that the input shaft 51 of the agricultural machinery power box 5 is driven and drives the input tooth 52 fixed thereon, and the input tooth 52 in turn drives the front end large tooth of the coupling tooth 55 meshing therewith. Since the coupling gear 55 is rotatably mounted on the fixed shaft 54, the coupling gear 55 rotates on the fixed shaft 54 ​​and drives the output gear 53 meshing with it through the pinion at its rear end, and the output gear 53 drives the power output shaft 56 fixed in its inner hole, thereby providing the agricultural implement with working torque at a standard speed.

[0060] like Figure 1 As shown, the functional tooth 3212 is moved forward to shift its outer tooth to engage with the matching tooth 3213. When the speed regulator drives the connector 3211, the matching tooth 3213 fixed thereto is immediately driven and drives the functional tooth 3212 engaged therewith. The functional tooth 3212 is slidably mounted on the input shaft 51 of the agricultural machinery power box 5, and then the power flows through the same path as above to be transmitted to the power output shaft 56. Finally, the working torque that changes synchronously with the driving speed is provided to the agricultural machinery.

[0061] like Figure 1 As shown, the forward tooth 331 is moved to mesh with the reverse tooth 332. The large tooth position of the rear end gear of the clutch shaft gear 21 meshes with the input end gear of the coupling gear 333, and the reverse tooth 332 meshes with the output end gear of the coupling gear 333. At this time, the forward tooth 331 obtains the reverse driving force and drives the first shaft 321, and the first shaft 321 drives the second shaft 322 with teeth through the connecting sleeve 3111. The power tooth 325 driven by the second shaft 322 with teeth then drives the power sliding tooth 327 meshing with its external teeth, and the power sliding tooth 327 drives the power shaft 326 slidably mounted therewith. Afterwards, the power flows through the same path as described above, and finally provides the hill crawler tractor with reverse working torque when driving in reverse.

[0062] like Figure 1As shown, keep the functional tooth 3212 engaged with the matching tooth 3213, and move the functional tooth 3212 forward a small distance, so that the inner tooth of the functional tooth 3212 is engaged with the inner part of the fixed tooth 3215, because the fixed tooth 3215 is fixedly mounted on the inner wall of the speed change chamber 32. At this time, the stationary fixed tooth 3215 locks the matching tooth 3213 engaged with the outside thereof through the functional tooth 3212. The matching tooth 3213 in turn locks the connector 3211 fixed thereto, because the front axle 328 is fixed in the hole of the connector 3211, and the front axle 328 is locked. The front axle 328 in turn locks the large bevel tooth 311 engaged therewith through its small bevel tooth, causing the left and right active teeth to stagnate due to lack of power. As shown in FIG. Figure 1 As shown, the front part of the power take-off shaft gear 324 is fixedly provided with the input teeth of the steering bevel gear pair 3110. When the power sliding gear 327 is toggled to mesh with the small teeth of the power take-off shaft gear 324, the steering bevel gear pair 3110 is driven, because the inner end of the shaft extension of the right brake 317 is also provided with the output teeth of the steering bevel gear pair 3110, and the output end bevel teeth of the steering bevel gear pair 3110 are fixedly installed on the inner shaft of the brake 317 together with the right brake gear 314. The right brake gear 314 is then driven and drives the right active gear 312, and the right active gear 312 then drives the right differential gear 3181 meshed with the end face key of the rear end thereof. Because the large bevel gear 311 is fixedly installed coaxially with the housing of the differential 318. It can be seen that the housing of the differential 318 is locked at this time. Therefore, the right differential gear 3181 drives the planetary gear 3184 meshed with it to rotate on the planetary shaft 3183. The self-rotating planetary gear 3184 drives the meshing left differential gear 3181 to rotate in the opposite direction, and the left differential gear 3181 drives the left driving gear 312 meshing with the end face key of the tail end to rotate in the opposite direction. At this point, the left and right driving gears regain power. The left and right driving gears 312 and 312 rotate in opposite directions, and drive the left and right walking systems 319 to rotate in opposite directions through the meshing passive gear 313, until the left and right crawlers rotate as shown in the figure. Figure 1 Drive in the direction indicated by the arrow to achieve "on-the-spot turning" of the hilly crawler tractor.

[0063] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hill crawler tractor, comprising a transmission system, characterized in that: The transmission system comprises a diesel engine (1), a clutch (2), a transmission (3), a speed regulator (4) and an agricultural machinery power box (5); The clutch (2) comprises clutch shaft teeth (21); The transmission (3) comprises a bidirectional chamber (33), a bridge chamber (31) and a speed change chamber (32) which are arranged in sequence; one end of the bidirectional chamber (33) away from the bridge chamber (31) is fixedly connected to the housing of the diesel engine (1); the rear end of the transmission (3) is arranged on the speed regulator (4) which is arranged adjacent to the speed change chamber (32); and the rear end of the housing of the transmission (3) is fixedly connected to the agricultural machinery power box (5); The speed regulator (4) comprises a sun gear (41), planetary gears (42), a planet carrier (43), a ring gear (44) and a ring gear carrier (45); The bidirectional cavity (33) of the transmission (3) comprises forward teeth (331), reverse teeth (332), and first connecting teeth (333); the speed change cavity (32) of the transmission (3) comprises a shaft (321), a second shaft with teeth (322), a gear position tooth (323), a power take-off shaft tooth (324), a power tooth (325), a power shaft (326), a power sliding tooth (327), a front shaft (328), a hollow shaft (329), a bearing group (3210), a connector (3211), a functional tooth (3212), a matching tooth (3213), a shifting tooth (3214), and a fixed tooth (3215); The front end of the clutch shaft tooth (21) of the clutch (2) is meshed with the power output interface of the diesel engine (1), and the rear end of the clutch shaft tooth (21) is respectively meshed with the forward tooth (331) and the first connecting tooth (333); the forward tooth (331) is slidably arranged at the front end of a shaft (321) and is externally meshed with the reverse tooth (332); the first connecting tooth (333) is externally meshed with the reverse tooth (332); The rear end of a shaft (321) of the transmission chamber (32) of the transmission (3) is connected to the front end of a second shaft with teeth (322) via a connecting sleeve (3111), the gears on the second shaft with teeth (322) are slidably engaged with the gear teeth (323), and the gear teeth (323) are slidably mounted on a hollow shaft (329); The outer end of the hollow shaft (329) of the transmission cavity (32) is drivingly connected to the sun gear (41) of the speed regulator (4); the planet carrier (43) of the speed regulator (4) is fixedly mounted on the wall of the transmission cavity (32); and the hollow shaft (329) is mounted on the wall of the transmission cavity (32) via a bearing assembly (3210); The rear end of the toothed second shaft (322) of the transmission chamber (32) of the transmission (3) is fixedly provided with a power tooth (325); the power sliding tooth (327) is an internal and external tooth structure; the power tooth (325) is externally meshed with the power sliding tooth (327); the power sliding tooth (327) is internally meshed with the rear end gear of the power take-off shaft tooth (324); the front end of the power shaft (326) is rotatably mounted in the rear end gear of the power take-off shaft tooth (324); the power sliding tooth (327) is slidably mounted in the rear end gear of the power take-off shaft tooth (324); The power shaft (326) is mounted on the power shaft (326); a shifting tooth (3214) is fixedly mounted on the rear end of the power shaft (326); the functional tooth (3212) slides on an input shaft (51) mounted on the power box (5) of the agricultural machine, so that the shifting tooth (3214), the matching tooth (3213), the functional tooth (3212) and the fixed tooth (3215) are respectively meshed during the forward sliding process of the functional tooth (3212); the fixed tooth (3215) is fixedly mounted on the inner wall of the speed change chamber (32); The planet carrier (43) of the speed regulator (4) has a plurality of second planet shafts (431) evenly distributed along a pitch circle, and the planet gears (42) are rotatably mounted on the second planet shafts (431); the sun gear (41) is externally meshed with the planet gears (42); the planet gears (42) are internally meshed with the ring gear (44), and the ring gear (44) is fixedly connected to the ring gear carrier (45); the front end of the ring gear carrier (45) is rotatably mounted on the outside of the bearing group (3210); the rear shaft extension of the planet carrier (43) is rotatably mounted on the inner partition of the speed change chamber (32); the inner hole of the rear shaft extension of the planet carrier (43) is drivingly connected to the front end of the connector (3211); the rear end of the connector (3211) is fixedly connected to the matching gear (3213); The front shaft (328) of the speed change chamber (32) is rotatably mounted in the hollow shaft (329); one end of the front shaft (328) is drivingly connected to the inner hole of the connector (3211), and the other end is connected to the large bevel gear (311) of the bridge chamber (31) to drive the travel system (319) in the bridge chamber (31) to move.

2. The hill crawler tractor according to claim 1, characterized in that: The bridge chamber (31) of the transmission (3) further comprises a driving tooth (312), a driven tooth (313), a brake tooth (314), a half shaft (316), a brake (317) and a differential (318); a front end of the front shaft (328) is provided with a small bevel tooth meshing with the large bevel tooth (311); the large bevel tooth (311) is fixedly mounted coaxially with the housing of the differential (318); a transverse shaft (3182) is provided in the differential (318); the driving tooth (312) rotates The driving gear (312) is arranged at the left and right ends of the horizontal axis (3182); the driving gear (312) is meshed with the passive gear (313) and the brake gear (314) at the same time; the passive gear (313) can drive the walking system (319) fixed thereto to output walking power; the brake gear (314) is connected to the shaft of the brake (317); the half shaft (316) is arranged symmetrically on the left and right, and a passive gear (313) is fixed on each side of the half shaft (316), and the extended end of the half shaft (316) is connected to the walking system (319).

3. The hill crawler tractor according to claim 2, characterized in that: The bridge chamber (31) further comprises a steering cone gear pair (3110) having an input gear and an output gear. The input gear is fixedly mounted on the front end of the power take-off shaft gear (324). The output gear is connected to the shaft of the brake (317) located on the right side. The brake (317) is fixed on the outer shell of the bridge chamber (31).

4. The hill crawler tractor according to claim 2, characterized in that: The differential (318) of the bridge chamber (31) comprises a differential tooth (3181), a first planetary shaft (3183) and a planetary tooth (3184); the planetary tooth (3184) is rotatably mounted on the first planetary shaft (3183) and two planetary teeth (3184) are symmetrically arranged front and rear; the first planetary shaft (3183) is fixedly mounted on the housing of the differential (318); one differential tooth (3181) is arranged in the left and right directions; the differential tooth (3181) is rotatably mounted on the transverse shaft (3182); and the differential tooth (3181) is meshed with the planetary teeth (3184).

5. The hill crawler tractor according to claim 4, characterized in that: The active tooth (312) of the bridge cavity (31) is engaged with the tail end of the differential tooth (3181) by an end face key.

6. The hill crawler tractor according to claim 1, characterized in that: The speed regulator (4) further comprises a speed regulating wheel (46) and an electric motor (47), the gear ring (44) is externally meshed with the speed regulating wheel (46), and the speed regulating wheel (46) is drivingly connected to the electric motor (47).

7. The hill crawler tractor according to claim 1, characterized in that: The agricultural machinery power box (5) comprises an input tooth (52), an output tooth (53), a fixed shaft (54), a second coupling tooth (55) and a power output shaft (56); the input tooth (52) is fixedly mounted on the input shaft (51); both ends of the fixed shaft (54) are fixedly mounted in the agricultural machinery power box (5); the front end of the second coupling tooth (55) meshes with the input tooth (52); the rear end of the second coupling tooth (55) meshes with the output tooth (53); the shaft extension end of the output tooth (53) is mounted on the housing of the agricultural machinery power box (5); and the power output shaft (56) is fixedly mounted in the shaft extension hole of the output tooth (53).

8. The hill crawler tractor according to claim 1, characterized in that: The functional teeth (3212) of the speed change chamber (32) are of an internal and external tooth structure, wherein the external teeth respectively mesh with the indexing teeth (3214), the matching teeth (3213), and the functional teeth (3212) when sliding, and the internal teeth mesh with the fixed teeth (3215).

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