阅读说明：本技术 一种乘坐式多功能农用车 (Riding type multifunctional agricultural vehicle ) 是由 夏琪玮 陈勇帅 夏金邦 陈艳华 李忠才 于 2021-08-18 设计创作，主要内容包括：本发明属于农业机械设备技术领域,具体涉及一种乘坐式多功能农用车,其包括车体,所述车体包括底盘和设置在底盘上的行驶系统、动力系统、传动系统、操控台以及乘坐部,传动系统包括变速器、第一输出传动装置和第二输出传动装置,动力系统将动力并列分配给变速器和第二输出传动装置,所述变速器将转速相关联的输出给行驶系统及第一输出传动装置,所述第一输出传动装置和所述第二输出传动装置驱动不同的作业机械。本发明通过改进传动系统,使其具有与行驶系统直接相关联的第一输出传动装置和与发动机工作直接相关联的第二输出传动装置,可以实现耕整、种植一体化,一机多用,极大地提高农用机的使用效率。(The invention belongs to the technical field of agricultural mechanical equipment, and particularly relates to a riding type multifunctional agricultural vehicle which comprises a vehicle body, wherein the vehicle body comprises a chassis, and a running system, a power system, a transmission system, a control platform and a riding part which are arranged on the chassis, the transmission system comprises a speed changer, a first output transmission device and a second output transmission device, the power system distributes power to the speed changer and the second output transmission device in parallel, the speed changer outputs the power to the running system and the first output transmission device in a rotating speed correlation mode, and the first output transmission device and the second output transmission device drive different working machines. The invention improves the transmission system to enable the transmission system to be provided with the first output transmission device directly related to the running system and the second output transmission device directly related to the work of the engine, can realize the integration of cultivation and planting, has multiple functions, and greatly improves the use efficiency of the agricultural machine.)

1. A riding type multifunctional agricultural vehicle comprises a vehicle body (1), wherein the vehicle body (1) comprises a chassis (10), a running system (20), a power system (30), a transmission system (40), a console (50) and a riding part (60) which are arranged on the chassis, the riding type multifunctional agricultural vehicle is characterized in that the transmission system (40) comprises a stepless hydraulic speed changer (401), a first output transmission device (41) and a second output transmission device (42), the power system (30) distributes power to the stepless hydraulic speed changer (401) and the second output transmission device (42) in parallel, the stepless hydraulic speed changer (401) outputs the related rotating speed to the running system (20) and the first output transmission device (41), the running system (20) and the first output transmission device (41) work synchronously, and the second output transmission device (42) can work synchronously with the power system (30), the first output transmission (41) and the second output transmission (42) drive respective work machines.

2. The riding multifunctional agricultural vehicle of claim 1, wherein the first output transmission device (41) comprises a multi-stage gear pair (411) and a first output transmission shaft (412), the power output shaft (405) of the continuously variable hydraulic transmission (401) is in transmission connection with the multi-stage gear pair (411), and the multi-stage gear pair (411) outputs power to the first output transmission shaft (412) after being matched with a speed change gear for speed change.

3. A riding multi-function agricultural vehicle according to claim 2, characterized in that the multi-stage gear pair (411) comprises a first transmission shaft (4112) connected to the power take-off shaft (405), a second transmission shaft (4113) and a third transmission shaft (4114) which are parallel to the first transmission shaft (4112) and are arranged in sequence, a first high-low gear set (416) is fixed on the first transmission shaft (4112), the second transmission shaft (4113) is connected with a first speed change gear set (417) in a sliding manner, and is fixedly connected with a second high-low gear set (418), the third transmission shaft (4114) is connected with a second speed change gear set (419) in a sliding way, the first high-low gear set (416) is meshed with the first speed change gear set (417), the second high-low gear set (418) is meshed with a second speed change gear set (419), the third rotating shaft (4114) transmits power to the first output transmission shaft (412).

4. A riding multifunctional agricultural vehicle according to claim 3, wherein the third transmission shaft (4114) is provided with a first bevel gear (4110), a second bevel gear (4111) is arranged at the end of the first output transmission shaft (412), the first bevel gear (4110) is meshed with the second bevel gear (4111), the transmission direction of the third transmission shaft (4114) is changed by 90 degrees, and the first output transmission shaft (412) extends to the rear of the vehicle body (1).

5. The riding multifunctional agricultural vehicle of claim 2, wherein the first output transmission shaft (412) comprises a first joint (4121), a middle shaft (4122) and a second joint (4123), a first clutch (4124) is arranged at one end of the first joint (4121) and one end of the middle shaft (4122), the other end of the middle shaft (4122) is connected with a universal joint (4123), and the output end of the universal joint (4123) can be connected with the planting part.

6. A riding multi-function agricultural vehicle according to any one of claims 1-5, characterized in that the power system (30) comprises a primary pulley (302), the power input of the continuously variable hydraulic transmission (401) is provided with a first secondary pulley (402), the second output transmission (42) comprises a second secondary pulley (423) of the power input, and the primary pulley (302), the first secondary pulley (402) and the second secondary pulley (423) are in belt transmission connection.

7. The riding multifunctional agricultural vehicle of claim 6, wherein the second output transmission device (42) comprises a fourth transmission shaft (422) with one end fixedly connected with the second driven belt pulley (423), a steering gear set (426) and a second output transmission shaft (421), the fourth transmission shaft (422) is integrally parallel to the continuously variable hydraulic transmission (401), the other end of the fourth transmission shaft (422) is provided with a second clutch (424), the second output transmission shaft (421) extends towards the rear of the vehicle body, and the steering gear set (426) is in transmission connection with the fourth transmission shaft (422) and the second output transmission shaft (421).

8. The riding multifunctional agricultural vehicle of claim 7, wherein the steering gear set (426) comprises a third bevel gear (4261) slidably connected with the fourth transmission shaft (422), a connecting shaft (4262), a fourth bevel gear (4263) and a fifth bevel gear (4264) fixed at two ends of the connecting shaft (4262), a sixth bevel gear (4276) fixed at one end of the second output transmission shaft (421), the third bevel gear (4261) is meshed with the fourth bevel gear (4263), and the fifth bevel gear (4264) is meshed with the sixth bevel gear (4276).

9. The riding multifunctional agricultural vehicle as claimed in claim 6, wherein the second output transmission shaft (421) is provided with a first universal joint (4271) and a second universal joint (4272) at two ends, and the power of the second output transmission shaft (421) is output through a reduction gear pair (428).

10. The riding multifunctional agricultural vehicle of claim 9, wherein the second output transmission shaft (421) comprises a first shaft (4273), a second shaft (4274) and a third shaft (4275), one end of the first shaft (4273) is a sixth bevel gear (4276), two ends of the second shaft (4274) are a first universal joint (4271) and a second universal joint (4272), respectively, the other end of the third shaft (4275) is connected with a reduction gear pair (428), the reduction gear pair (428) comprises a first gear (4281) fixed on the third shaft (4275) and a second gear (4282) of an output end (429) of the tillage part, the two gears are meshed to adjust the output rotation speed, and the output end (429) of the tillage part is provided with a joint matched with the tillage part (2).

Technical Field

The invention belongs to the technical field of agricultural mechanical equipment, and particularly relates to a riding type multifunctional agricultural vehicle.

Background

Rice is the most important grain crop in China, and the planting area, the single yield and the total yield of the rice are high in the top of the grain crop. The mechanized production of rice can obviously improve the yield of rice and effectively save labor, so that the sales of high-speed rice transplanters in recent years are stabilized at about 2 ten thousand per year. The rice can be planted in three seasons at most one year. Usually, the temperature can be higher in three seasons, such as Hainan, Guangdong, Fujian and the like; and subtropical regions can be planted in two seasons for one year, such as Anhui, Zhejiang and Chongqing; in addition, the northeast region is usually only one season for one year. The rice is planted by using the high-speed rice transplanter, the planting time of each season is about 20 days, so the annual service time of the high-speed rice transplanter is about 20-60 days, and most of the annual time is in an idle state.

With the development of agricultural modernization, a large amount of mechanical products are used, and special machines are respectively used for rice management, harvesting and post-harvest land maintenance, so that farmers need the investment of different mechanical equipment, and the production cost is increased.

Chinese patent CN205686173U discloses that "a multifunctional agricultural working vehicle" can travel in worse paddy field through "6-gear speed change, three-wheel drive", and the scheme of setting up "floating plate assembly" and "the flange plates on both sides of the rear wheel can increase a set of traveling system" avoids the drawback that the working vehicle is easy to sink in driving paddy field, so that the working vehicle "has wide application environment. Patent CN111465313A discloses a "paddy field working machine" capable of improving working accuracy of the paddy field working machine "by" providing a speed reduction mechanism downstream of an output portion of the continuously variable transmission. However, the above patents are directed to the improvement of the adaptability or refinement of carrying the rice transplanting operation part or the seeding operation part, and the prior art does not consider and realize that the high-speed paddy field operation vehicle can carry other 'operation parts' for multifunctional operation. In order to reduce the production cost of farmers, increase the income of farmers and fully use the high-speed rice transplanter (increase the service time), the invention urgently needs to develop a riding type multifunctional agricultural machine integrating plowing, planting, managing and collecting.

Disclosure of Invention

The invention aims to solve at least one problem in the prior art and provides a riding type multifunctional agricultural vehicle which can be lapped and suitable for driving different operation parts and is stable in driving, so that the agricultural vehicle can be fully utilized, and the production cost of farmers is reduced.

The invention provides a riding type multifunctional agricultural vehicle, which comprises a vehicle body, wherein the vehicle body comprises a chassis, a running system, a power system, a transmission system, a console and a riding part, wherein the running system, the power system, the transmission system, the console and the riding part are arranged on the chassis.

The invention improves the transmission system to enable the transmission system to be provided with the first output transmission device directly associated with the driving system and the second output transmission device directly associated with the work of the engine, two output shafts can adapt to different operation parts for mounting, and simultaneously, the invention can work on a composite operation part needing two kinds of output kinetic energy, can realize the integration of tillage and planting, can also separately drive different operation parts, has multiple purposes, greatly improves the use efficiency of the agricultural machine, and effectively solves the problems of long idle time and low use rate of the agricultural machine such as high-speed rice transplanting.

Furthermore, the first output transmission device comprises a multi-stage gear pair and a first output transmission shaft, the transmission is a stepless hydraulic transmission, a power output shaft of the stepless hydraulic transmission is in transmission connection with the multi-stage gear pair, and the multi-stage gear pair outputs power to the first output transmission shaft after being matched with a speed change gear for speed change. The first output transmission shaft outputs different rotating speeds, the corresponding work efficiency of the transplanting part can be adjusted, the walking speed of the walking system is cooperated, the walking system is suitable for different environments (such as paddy fields and dry farmlands, rugged or flat), the walking system can be more suitable for different operation parts (such as the transplanting part and the planting part), and the application range is wide.

Further, the multistage gear pair comprises a first transmission shaft connected with the power output shaft, a second transmission shaft and a third transmission shaft which are parallel to the first transmission shaft and are sequentially arranged, a first high-low gear set is fixed on the first transmission shaft, a first speed change gear set is connected to the second transmission shaft in a sliding mode, the second high-low gear set is fixedly connected to the second high-low gear set, the third transmission shaft is connected to the second speed change gear set in a sliding mode, the first high-low gear set is meshed with the first speed change gear set, the second high-low gear set is meshed with the second speed change gear set, and the third rotating shaft is power-transmitted to the first output transmission shaft. Through the cooperation of multistage gear pair, realize the output range of great first output shaft, the parallel arrangement of three transmission shafts for transmission efficiency is high, and the transmission is stable, and occupation space is less.

Furthermore, the third transmission shaft is provided with a first bevel gear, the end part of the first output transmission shaft is provided with a second bevel gear, the first bevel gear is meshed with the second bevel gear, the transmission direction of the third transmission shaft is changed by 90 degrees, and the first output transmission shaft extends to the rear of the vehicle body. The rotation direction is changed through the cooperation of the first bevel gear and the second bevel gear, the first output transmission shaft can be directly extended behind the vehicle body, the extending direction and angle can be correspondingly set according to the requirement situation, and the arrangement of the transmission system and the power system is more flexible.

Further, first output transmission shaft includes first joint, middle part axle and second joint, first joint and middle part axle are provided with first clutch, the other end and the universal joint of middle part axle are connected, and the universal joint output can insert planting portion. Can change the middle part axle through the cooperation of pegging graft, select the first output transmission shaft of different length, solved major axis disalignment, a great deal of problems such as transmission direction disalignment simultaneously through the regulation of universal joint for first output transmission shaft output is rotated and is stabilized with the moment of torsion, and adaptability is wide, can change different length axles according to the demand and be connected easy maintenance with operation portion.

Further, the power system comprises a main belt pulley, a power input end of the continuously variable hydraulic transmission is provided with a first driven belt pulley, the second output transmission device comprises a second driven belt pulley of the power input end, and the main belt pulley, the first driven belt pulley and the second driven belt pulley are in transmission connection through a belt.

Through the mode transmission of belt, with first from belt pulley and second from the belt pulley of power distribution, both are abreast, influence each other is less for second output transmission can be continuous output for operation portion working power, no matter how the agricultural vehicle walking situation, has guaranteed high efficiency, the continuity of operation portion work, makes operation portion (like the rotary cultivator) work effectual.

Further, the second output transmission device comprises a fourth transmission shaft, a steering gear set and a second output transmission shaft, one end of the fourth transmission shaft is fixedly connected with the second driven belt pulley, the fourth transmission shaft is integrally parallel to the speed changer, the other end of the fourth transmission shaft is provided with a second clutch, the second output transmission shaft extends towards the rear of the vehicle body, and the steering gear set is in transmission connection with the fourth transmission shaft and the second output transmission shaft. Through set up steering gear set alone make the second output transmission axle not only can change with the direction of transmission of fourth transmission axle and make the second output transmission axle extend to the automobile body rear, can adjust the spatial position of second output transmission axle moreover for the second output transmission axle is the top or the below of first output transmission axle, avoids both mutual interference, influence, and more importantly this kind of adjustment can make the operation portion that two output shaft connect the difference. The second clutch is arranged on the fourth transmission shaft, so that the operation of the largest part of the structure in the second output transmission device can be disconnected, and the loss of related parts and the loss of power can be reduced.

Furthermore, the steering gear set comprises a third bevel gear fixed at the output end of the second clutch, a connecting shaft, a fourth bevel gear and a fifth bevel gear fixed at two ends of the connecting shaft, and a sixth bevel gear fixed at one end of the second output transmission shaft, wherein the third bevel gear is meshed with the fifth bevel gear, the fifth bevel gear is meshed with the sixth bevel gear, the third bevel gear is in sliding connection with the second clutch, when the second clutch is in a separating action, the third bevel gear rotates, and when the second clutch is not in a combining action, the third bevel gear and the second clutch synchronously rotate. The output position and the direction of the second output shaft are adjusted by the arrangement of the steering gear set, the problem of mutual interference of a front power system of the agricultural vehicle and multi-shaft transmission caused by mounting different operation parts is solved, the position of the power access port of the mounted operation part is more flexible, and the second output shaft is wider in connection adaptability.

Furthermore, two ends of the second output transmission shaft are respectively provided with a first universal joint and a second universal joint, and the power of the second output transmission shaft is output through a reduction gear pair. The reduction gear pair is arranged behind the two universal joints, so that the torque of the shaft transmission on the two universal wheels is reduced, and the two universal joints are further adaptive to different operation parts.

Furthermore, the second output transmission shaft comprises a first shaft, a second shaft and a third shaft, wherein one end of the first shaft is a sixth bevel gear, two ends of the second shaft are respectively a first universal joint and a second universal joint, the other end of the third shaft is connected with a reduction gear pair, the reduction gear pair comprises a first gear fixed on the third shaft and a second gear fixed at the output end of the tillage part, the two gears are meshed to adjust the output rotating speed, and the output end of the tillage part is provided with a joint matched with the tillage part. The reduction gear pair can output required rotating speed and torque as required, and is adjusted according to the power output conditions of different engines, so that the output effect is matched with the power of the engines.

Drawings

FIG. 1 is a schematic view of a riding-type multifunctional agricultural vehicle;

FIG. 2 is a schematic view of the agricultural vehicle hanging on the transplanting part;

FIG. 3 is a schematic illustration of a transmission system configuration;

fig. 4 is a schematic view of a multi-stage gear pair.

The labels in the figures are:

1-a vehicle body, 10-a chassis, 20-a running system, 30-a power system, 40-a transmission system, 50-a console and 60-a seating part;

101-front axle box, 102-rear axle box, 103-hanging part;

3-an insertion part;

302-primary pulley, 303-belt;

401-stepless hydraulic speed changer, 402-first driven belt pulley, 403-input shaft, 405-output shaft;

41-a first output transmission, 411-a multi-stage gear pair, 412-a first output transmission shaft, 4121-a first joint, 4122-a middle shaft, 4123-a second structure, 4124-a first clutch, 413-an implant output, 416-a first high-low gear set, 417-a first speed change gear set, 418-a second high-low gear set, 419-a second speed change gear set, 4110-a first bevel gear, 4111-a second bevel gear, 4112-a first transmission shaft, 4113-a second transmission shaft, 4114-a third transmission shaft;

42-a second output transmission device, 421-a second output transmission shaft, 422-a fourth transmission shaft, 423-a second driven belt pulley, 424-a second clutch, 425-a tension pulley, 426-a steering gear set, 4261-a third bevel gear, 4262-a connecting shaft, 4263-a fourth bevel gear, 4264-a fifth bevel gear, 427-a universal joint, 4271-a first universal joint, 4272-a second universal joint, 4273-a first shaft, 4274-a second shaft, 4275-a third shaft, 4276-a sixth bevel gear, 428-a reduction gear pair, 4281-a first gear, 4282-a second gear and 429-an output end of a tillage part.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention and not limiting.

As shown in fig. 1 to 4, a vehicle body 1 of a riding type multipurpose agricultural vehicle according to the present invention includes a chassis 10, a traveling system 20 mounted on the chassis 10, a power system 30, a transmission system 40, a console 50, and a seat 60. The chassis 10 is a chassis 10 structure of a high-speed rice transplanter, a front axle box 102 and a rear axle box 102 are installed on the chassis 10, the front axle box 101 supports a left-right front traveling system 20, and the rear axle box 102 supports a left-right rear traveling system 20. The chassis 10 has a relatively high ground clearance and can adapt to different working environments. A hanging part 103 is mounted on the rear end of the chassis 10, and the hanging part 103 can be used for carrying a plurality of working machine structures such as cultivation, planting, management, harvesting and assistance. Wherein the agricultural vehicle can be carried with the tillage part mainly has: rotary cultivator, beater for paddy field, field flattening machine, etc. The insertion portion 3 mainly has: transplanter and direct seeder. The management part mainly comprises: weeder, furrow opener, pesticide spreader, fertilizer spreader, etc.; the harvesting part mainly comprises: grain harvesters, sweet potato harvesters, potato harvesters and the like. The auxiliary part mainly has: dump trucks, water pumps, and the like. Different functional parts are hung on the agricultural vehicle to realize the multiple purposes of one machine, thereby increasing the utilization rate of the chassis 10 of the high-speed rice transplanter and reducing the production cost of farmers.

The multi-purpose agricultural vehicle includes a power system 30, the power system 30 is generally an engine, but may be an electric motor in some embodiments, and the power system 30 includes a primary pulley 302. The transmission system 40 comprises a transmission, the power input end of the transmission is a first driven pulley 402 which is a continuously variable hydraulic transmission 401, and the main pulley 302 and the first driven pulley 402 are driven by a belt. The continuously variable hydraulic transmission 401 may also be a transmission of a traveling part of an existing high-speed rice transplanter. The power output shaft 405 of the stepless hydraulic transmission 401 drives the running system 20 to drive the agricultural vehicle to move. The agricultural vehicle adjusts the transmission ratio through the stepless hydraulic transmission 401, and the agricultural vehicle is stable in design, small in occupied space and very convenient to install.

When the agricultural vehicle is hung on the transplanting part 3, a device for driving the transplanting part 3 to work and transmitting the transplanting part 3 is connected with a stepless hydraulic speed changer 401 of the running system 20, and the stepless hydraulic speed changer 401 is connected with an engine through a belt pulley. The rice transplanting or direct seeding speed is related to the walking speed of the agricultural vehicle, namely the transplanting or direct seeding speed is high when the walking part is high in speed, the transplanting or direct seeding speed is low when the walking part is low in speed, and the transplanting or direct seeding work is not carried out when the walking part stops, so that the rice transplanting or direct seeding work is synchronous.

In this embodiment, the power output shaft 405 of the continuously variable hydraulic transmission 401 is further connected to the first output transmission device 41 for driving the insertion portion 3. The first output transmission 41 comprises a gearbox (not shown) in which a multi-stage gear pair 411 is mounted, and a first output drive shaft 412. The output shaft 405 is transmitted to the first output transmission shaft 412 through the multistage gear pair 411, and the transplanting speed and the traveling speed are related, so that the synchronous operation of the traveling system and the first output transmission device is realized. The multi-stage gear pair 411 includes a first transmission shaft 4112 connected to one end of the power output shaft 405, a first high-low gear set 416 is fixed to the first transmission shaft 4112, a first speed change gear set 417 is disposed on the second transmission shaft 4113, and the first speed change gear set 417 slides on the second transmission shaft 4113 such that the speed change gears can respectively mesh with corresponding gears of the first high-low gear set 416. A second high-low speed gear set 418 is fixed on the second transmission shaft 4113, a second speed change gear set 419 is connected to the third transmission shaft 4114 in a sliding manner, and the second speed change gear set 419 slides on the third transmission shaft 4114 and is engaged with a corresponding gear of the second high-low speed gear set 418. The first high-low gear set 416 and the second high-low gear set 418 may be formed by two gears with different numbers of teeth, or may be formed by multiple gears with different numbers of teeth, and the corresponding first and second speed change gear sets have gears matched with them to realize different transmission ratios. One end of the third transmission shaft 4114, which is far away from the continuously variable hydraulic transmission 401, is fixed with a first bevel gear 4110, the end, which is meshed with the first bevel gear 4110, is a second bevel gear 4111 fixed at one end of the first output transmission shaft 412, and the rotation direction of the rotating shaft is turned by 90 degrees through the matching of the two bevel gears, wherein 90 degrees are not absolute angles, and a certain error or a tolerance range can exist. The first output transmission shaft 412 comprises a first joint 4121, a middle shaft 4122 and a second joint 4123, wherein one end of the first joint 4121 and one end of the middle shaft 4122 are provided with a first clutch 4124, the other end of the middle shaft 4122 is connected with a universal joint 4123, and the output end of the universal joint 4123 can be connected with an inserting part. The first output propeller shaft 412 transmits the rotational power to the rear portion of the vehicle body 1, and is connected to a power joint mounted on the insertion portion 3 of the attaching portion 103. The running speed of the agricultural vehicle is controlled by the stepless hydraulic transmission 401, the output shaft 405 of the stepless hydraulic transmission 401 is connected with the multistage gear pair 411, and the output of the first output transmission shaft 412 is linked with the running speed of the running system 20, namely the agricultural vehicle runs fast, the rotating speed of the first output transmission shaft 412 is fast, and the first output transmission shaft 412 and the agricultural vehicle are synchronous, so that the spacing between planted crops is kept basically the same. The working speed of the transplanting part 3 is adjusted through the stepless hydraulic speed changer 401, so that the agricultural vehicle can not only mount the transplanter, but also mount planting parts such as direct seeding machines and the like which need different planting intervals and power requirements from the transplanter due to the output of different rotating speeds. Compared with the prior art, the agricultural vehicle is used for mounting parts suitable for different environments and crops, and is multipurpose. Meanwhile, the multi-stage gear pair 411 is simple and stable in structure. The present invention is applicable to almost all work units that perform work depending on the traveling speed of the traveling system 20, and has a wide range of applications.

The agricultural vehicle of the present invention can mount the planting part 3 and mount the tillage part, and the tillage part (such as a rotary cultivator, a beater, etc.) is required to be always operated no matter how fast the walking part is or whether the vehicle is stopped, and the first output transmission device 41 is related to the driving speed and can not always keep a certain working rotating speed.

Therefore, the transmission system 40 further includes a second output transmission 42 on the side of the continuously variable hydraulic transmission 401, the second output transmission 42 including a second slave pulley 423 disposed between the primary pulley 302 and the first slave pulley 402, the second slave pulley 423 being engaged with a belt. The second driven pulley 423 is fixed at one end of a fourth transmission shaft 422, and the fourth transmission shaft 422 is substantially parallel to the whole body of the continuously variable hydraulic transmission 401 and the multi-stage gear pair 411, the whole body parallel is that the whole arrangement direction of the multi-stage gear pair 411 is substantially parallel, namely, the whole body is substantially the same as the transmission square of the first to third transmission shafts, and the structure arrangement is substantially parallel. The other end of the fourth propeller shaft 422 is connected to a second clutch 424, and the second clutch 424 mainly functions to disconnect the torque transmission of the fourth propeller shaft 422 when the tillage is not used. In order to improve the tight fit between the second slave pulley 423 and the belt, a tension wheel 425 is disposed between the second slave pulley 423 and the main pulley 302 or between the second slave pulley 423 and the first slave pulley 402, and the tension wheel 425 is fitted to the outer side of the belt, that is, the tension wheel 425 and the second slave pulley 423 are located on the upper side and the lower side of the same side of the belt. The tensioner 425 has potential energy to move in the direction of the belt, causing the tensioner 425 to cling to the belt and ensure the belt is tight.

The second output transmission device 42 further comprises a steering gear set 426, the steering gear set 426 comprises a third bevel gear 4261, a connecting shaft 4262, a fourth bevel gear 4263 and a fifth bevel gear 4264, the third bevel gear 4261 and the fourth bevel gear 4263 are fixedly arranged at two ends of the connecting shaft 4262, a sixth bevel gear 4276 is fixedly arranged at one end of the second output transmission shaft 421, the third bevel gear 4261 is meshed with the fourth bevel gear 4263, and the fifth bevel gear 4264 is meshed with the sixth bevel gear 4276. The third bevel gear 4261 is sleeved on the fourth transmission shaft 422, and the clearance is generally large. Third bevel gear 4261 is then connected to second clutch 424, and when second clutch 424 is engaged, third bevel gear 4261 operates with second clutch 424. The power of the second driven pulley 423 is converted into the power in the required direction by the steering gear set 426, which further facilitates the transmission of the power of the front engine 301 to the tilling section 2 at the rear end of the vehicle body 1 through the transmission shaft, and facilitates the installation space of the second output transmission 42 to be more flexible.

The second output transmission shaft 421 is provided with a universal joint 427, in this embodiment, the second output transmission shaft 421 includes a first universal joint 4271 and a second universal joint 4272, the second output transmission shaft 421 is divided into three sections, which are a first shaft 4273, a second shaft 4274 and a third shaft 4275, one end of the first shaft 4273 is a sixth bevel gear 4276, and the other end of the third shaft 4275 is connected with a reduction gear pair 428. The two universal joints 427 are matched to enable the second output transmission shaft 421 to transmit torque for a long distance, and the angle of the transmission shaft can be adjusted, so that the second output transmission shaft is suitable for lifting, placing, jolting and the like of the tillage part 2. Through the cooperation of gear and axle in this patent, on transmitting the power of belt to operation mechanical device, do mechanical work stable, the precision is high.

The reduction gear pair 428 comprises a first smaller gear 4281 fixed on a third shaft 4275 and a second larger gear 4282 of an output end 429, the gears are meshed to adjust the output rotating speed, and a joint matched with the tillage part 2 and the like is installed at the output end 429 of the tillage part.

In the embodiment of the invention, the bearing, the hoop, the bearing seat and the like are not limited, and all the bearing, the hoop, the bearing seat and the like belong to conventional matching modes in mechanical arrangement. The expressions "first", "second", and the like in the present invention are not limited to the order of the structures, nor to the number of the structures, but are merely distinguished from the following terms.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.