Transmission device and riding type agricultural management machine

Abstract

The invention discloses a transmission device and a riding type agricultural management machine. The transmission device comprises a front gearbox, a rear gearbox and a transmission shaft, the transmission shaft comprises a transmission shaft body, a first universal joint and a second universal joint, a hydraulic steering mechanism is arranged on the front gearbox, and the front gearbox comprises a first rotating shaft with a first bevel gear arranged at the end and a power assembly used for driving the first rotating shaft to rotate. A second bevel gear is arranged on the power output shaft, and the axial direction of the first rotating shaft and the axial direction of the power output shaft are arranged in an inclined mode. According to the transmission device, the agricultural management machine can adapt to operation in different working scenes; and when the agricultural management machine steers, time and labor are wasted, and the convenience of steering operation of the agricultural management machine is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of agricultural machinery, and in particular relates to a transmission device and a riding agricultural management machine. Background Art

[0002] Agricultural management machines have the characteristics of light weight, small size and simple structure. They are widely used in dry land, paddy fields, orchards, etc. in plains, mountainous areas and hills.

[0003] When performing tillage operations, conventional agricultural management machines mount tillage implements on the axles of the travel wheels in the front gearbox. A power mechanism drives the implements for tillage, while a transmission mechanism drives the travel wheels in the rear gearbox for movement. When a riding agricultural management machine needs to turn during use, the deflection of the rear wheels in the rear gearbox is transmitted to the travel wheels in the rear gearbox via mechanical transmission.

[0004] However, the current transmission mechanism of agricultural management machines makes the front and rear gearboxes of the agricultural management machines relatively fixed, and cannot adapt to operations in different working scenarios; and when the agricultural management machines are turned, a large amount of manpower is required to achieve steering, which is time-consuming and labor-intensive, reducing the convenience of the steering operation of the agricultural management machines. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a transmission device, aiming to solve the technical problems of the existing riding agricultural management machines that are unable to adapt to operations in different working scenarios and the time-consuming and labor-intensive steering.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a transmission device comprising a front gearbox, a rear gearbox, and a transmission shaft for connecting the front gearbox and the rear gearbox, the transmission shaft comprising a transmission shaft body, a first universal joint arranged at one end of the transmission shaft body and connected to the power output shaft in the front gearbox, and a second universal joint arranged at the other end of the transmission shaft body and connected to the power input shaft in the rear gearbox, the front gearbox being provided with a hydraulic steering mechanism, the front gearbox comprising a first rotating shaft having a first bevel gear at an end thereof, and a power assembly for driving the first rotating shaft to rotate, the power output shaft being provided with a second bevel gear meshing with the first bevel gear, and the axial direction of the first rotating shaft being inclined to the axial direction of the power output shaft.

[0007] Furthermore, the angle between the axial direction of the first rotating shaft and the axial direction of the power output shaft is 6-15°.

[0008] Furthermore, the hydraulic steering mechanism includes a steering column arranged on the front gearbox, a steering wheel installed on one end of the steering column, a hydraulic pump installed on the frame, and hydraulic cylinders with two ends respectively arranged on the front gearbox and the rear gearbox. The other end of the steering column is provided with a hydraulic steering gear connected to the hydraulic cylinder, and the hydraulic pump is connected to the hydraulic steering gear.

[0009] Furthermore, a first support plate is provided on the front gearbox, a pair of first lugs are provided on the first support plate at intervals and relative to each other, one end of the hydraulic cylinder is inserted between the pair of first lugs, and one end of the hydraulic cylinder is hinged to the pair of first lugs through a first pin shaft.

[0010] Furthermore, the power assembly includes an engine, a drive shaft connected to the engine, and a plurality of shift gears sleeved on the drive shaft and arranged at intervals, and the power output shaft is provided with a rotating gear meshing with the shift gears.

[0011] Furthermore, a third universal joint is provided on the power output shaft, and the first universal joint and the third universal joint are connected via a cross shaft.

[0012] The present application also provides a riding agricultural management machine, comprising:

[0013] frame;

[0014] A front gearbox and a rear gearbox are arranged on the frame at intervals.

[0015] a transmission shaft for connecting the front gearbox and the rear gearbox in transmission; and

[0016] a brake pedal mechanism, disposed on the frame, for braking the rotation of the power output shaft in the rear gearbox;

[0017] The transmission shaft is the transmission shaft described above.

[0018] Furthermore, the brake pedal mechanism includes a pedal provided on the frame, a brake drum installed on the power input shaft in the rear gearbox, and a cable for connecting the pedal and the brake drum.

[0019] Furthermore, the pedal includes a base plate, a pedal hinged to the base plate at one end, and a connecting plate hinged to the pedal through a first hinge shaft at one end. A connecting shaft is provided at the other end of the connecting plate. A pair of slide openings are provided on the base plate along its length direction for the two ends of the connecting shaft to pass through. Bearings are respectively provided at both ends of the connecting shaft, and each bearing is respectively arranged in each slide opening. One end of the cable is connected to the brake drum, and the other end of the cable is connected to the connecting shaft.

[0020] Furthermore, a first retaining ring and a second retaining ring are respectively sleeved on both ends of the connecting shaft, and a pin hole is provided at one end of the connecting shaft, wherein a positioning pin is inserted into the pin hole.

[0021] The beneficial effects of the present invention are:

[0022] (1) By configuring the transmission shaft as a transmission shaft body, a first universal joint, and a second universal joint, on the one hand, the power of the front gearbox can be transmitted to the rear gearbox, thereby realizing four-wheel drive; on the other hand, since the transmission shaft is movably connected to the front gearbox and the rear gearbox respectively through the first universal joint and the second universal joint, the upper and lower positions of the front gearbox and the rear gearbox can be relatively adjusted to adapt to operations in different working scenarios, and at the same time, the steering can be realized by bending the waist;

[0023] (2) By providing a hydraulic steering mechanism on the front gearbox, after the hydraulic steering mechanism receives a steering command, the hydraulic steering mechanism drives the front gearbox and the rear gearbox to rotate relative to each other, thereby realizing the steering of the riding agricultural management machine, greatly reducing the operator's physical exertion and improving the flexibility and convenience of steering;

[0024] (3) Power is transmitted to the first rotating shaft through the power assembly in the front gearbox, and the first rotating shaft is engaged with the second bevel gear through the first bevel gear, thereby transmitting power to the power output shaft, and the power output shaft transmits power to the power input shaft in the rear gearbox through the transmission shaft; the current gearbox is provided with a plowing blade, and the axial direction of the first rotating shaft and the axial direction of the power output shaft are inclined, so that the plowing blade is subjected to a greater center of gravity force, so that the plowing blade can penetrate deeper into the ground, achieving a better plowing effect.

[0025] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention provides the following drawings for illustration:

[0027] Figure 1 This is a schematic structural diagram from a first-view perspective of a riding agricultural management machine proposed in one embodiment of the present invention;

[0028] Figure 2 This is a schematic structural diagram of a riding agricultural management machine from a second perspective according to an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of the partial structure of a riding agricultural management machine proposed in one embodiment of the present invention;

[0030] Figure 4 An embodiment of the present invention is proposed Figure 3 A magnified view of middle A;

[0031] Figure 5 This is a schematic structural diagram of a transmission device for a riding agricultural management machine according to one embodiment of the present invention;

[0032] Figure 6 An embodiment of the present invention is proposed Figure 5 Enlarged view of middle B;

[0033] Figure 7 This is a schematic diagram of a pedaling structure proposed in one embodiment of the present invention;

[0034] Figure 8 An exploded view of a pedal according to an embodiment of the present invention;

[0035] Figure 9 This is a structural diagram of a pedal removal method according to an embodiment of the present invention.

[0036] Figure Number:

[0037] 1- rack;

[0038] 2-front gearbox; 21-power output shaft; 22-first rotating shaft; 23-first bevel gear; 24-power assembly; 241-engine; 242-drive shaft; 243-shift gear; 244-rotating gear; 25-second bevel gear; 26-first support plate; 27-first lug; 28-first pin; 29-third universal joint;

[0039] 3-rear gearbox; 31-power input shaft; 32-second support plate; 33-second lug; 34-second pin; 35-fourth universal joint;

[0040] 4- transmission shaft; 41- transmission shaft body; 42- first universal joint; 43- second universal joint; 44- cross shaft;

[0041] 5-Hydraulic steering mechanism; 51-Steering column; 52-Steering wheel; 53-Hydraulic cylinder; 54-Hydraulic pump; 55-Hydraulic steering gear;

[0042] 6-brake pedal mechanism; 61-stepping pedal; 611-base plate; 612-pedal; 6121-first lifting lug; 6122-second lifting lug; 613-connecting plate; 6131-vertical plate; 6132-connecting block; 6133-baffle; 614-connecting shaft; 6141-first retaining ring; 6142-second retaining ring; 6143-locating pin; 615-slideway opening; 616-first hinge axis; 617-bearing; 618-fixing plate; 62-brake drum; 63-cable; 631-rope; 632-cable noose; 633-locating nut; 64-ring;

[0043] 7-seats. DETAILED DESCRIPTION

[0044] like Figures 1 to 6 As shown, this embodiment proposes a transmission device, including a front gearbox 2, a rear gearbox 3, and a transmission shaft 4. The transmission shaft 4 can be used to connect the front gearbox 2 and the rear gearbox 3. The transmission shaft 4 includes a transmission shaft body 41, a first universal joint 42, and a second universal joint 43. The first universal joint 42 is provided at one end of the transmission shaft body 41, and the first universal joint 42 is connected to the power output shaft 21 in the front gearbox 2. The second universal joint 43 is provided at the other end of the transmission shaft body 41. The section 43 is in transmission connection with the power input shaft 31 in the rear gearbox 3. The front gearbox 2 is provided with a hydraulic steering mechanism 5. The front gearbox 2 includes a first rotating shaft 22 and a power assembly 24. The first rotating shaft 22 is provided with a first bevel gear 23. The power assembly 24 can be used to drive the first rotating shaft 22 to rotate. The power output shaft 31 is provided with a second bevel gear 25. The second bevel gear 25 is engaged with the first bevel gear 23. The axial direction of the first rotating shaft 22 is inclined to the axial direction of the power output shaft 31.

[0045] In the application, by configuring the transmission shaft 4 to comprise a transmission shaft body 41, a first universal joint 42, and a second universal joint 43, on the one hand, the power of the front gearbox 2 can be transmitted to the rear gearbox 3, thereby realizing four-wheel drive; on the other hand, since the transmission shaft 4 is movably connected to the front gearbox 2 and the rear gearbox 3 respectively through the first universal joint 42 and the second universal joint 43, the upper and lower positions between the front gearbox 2 and the rear gearbox 3 can be relatively adjusted to adapt to operations in different working scenarios, while also realizing waist-bending steering; by arranging a hydraulic steering mechanism 5 on the front gearbox 2, after the hydraulic steering mechanism 5 receives a steering command, the hydraulic steering mechanism 5 drives the relative rotation of the front gearbox 2 and the rear gearbox 3, thereby realizing The steering of the riding agricultural management machine greatly reduces the operator's physical exertion and improves the flexibility and convenience of steering; the power is transmitted to the first rotating shaft 22 through the power assembly 24 in the front gearbox 2, and the first rotating shaft 22 is engaged with the second bevel gear 25 through the first bevel gear 23, thereby transmitting the power to the power output shaft 21, and the power output shaft 21 transmits the power to the power input shaft 31 in the rear gearbox 3 through the transmission shaft 4; the current gearbox 2 is provided with a plowing knife, and the axial direction of the first rotating shaft 22 is inclined to the axial direction of the power output shaft 31, so that the plowing knife is subjected to a greater center of gravity force, so that the plowing knife can penetrate deeper into the ground to achieve better plowing effect.

[0046] Preferably, the angle between the axial direction of the first rotating shaft 22 and the axial direction of the power output shaft 21 is 6-15 degrees. Specifically, the angle can be 6 degrees, 8 degrees, 10 degrees, 12 degrees, 14 degrees, 15 degrees, etc. This tilted arrangement allows the tilling blade to penetrate the soil more effectively and deeply, thereby improving tillage efficiency and quality.

[0047] Further, see Figure 3 and Figure 4As shown, the hydraulic steering mechanism 5 includes a steering column 51, which is arranged on the front gearbox 2. A steering wheel 52 is installed at one end of the steering column 51. The front gearbox 2 is provided with a hydraulic pump 54 connected to the steering column 51; in addition, the hydraulic steering mechanism 5 also includes a hydraulic cylinder 53 and a hydraulic steering gear 55. The two ends of the hydraulic cylinder 53 are respectively arranged on the front gearbox 2 and the rear gearbox 3. The arrangement of the hydraulic cylinder 53 enables the steering process to be driven by hydraulic force, which greatly enhances the ease and accuracy of steering. The hydraulic steering gear 55 is arranged on the steering column 51 and is connected to the oil circuit of the hydraulic cylinder 53 through an oil pipe. In this way, a hydraulic cylinder 53 is provided on the front gearbox 2 and the rear gearbox 3, and a hydraulic steering gear 55 is provided on the steering column 51. Therefore, during the steering process of the hydraulic steering mechanism, the hydraulic pump 54 provides the necessary hydraulic power to ensure that the hydraulic steering gear 55 can work normally. After the hydraulic steering gear 55 receives the steering instruction, the hydraulic steering gear 55 controls the hydraulic cylinder 53 to perform telescopic movement. The telescopic movement of the hydraulic cylinder 53 drives the relative rotation of the front gearbox 2 and the rear gearbox 3, thereby realizing the steering of the riding agricultural management machine, greatly reducing the operator's physical exertion and improving the flexibility and convenience of steering.

[0048] Further, see Figure 3 and Figure 4 The front transmission case 2 is provided with a first support plate 26, on which a pair of first lugs 27 are spaced apart and opposed to each other. One end of the hydraulic cylinder 53 is inserted between the pair of first lugs 27, and one end of the hydraulic cylinder 53 is hingedly connected to the pair of first lugs 27 via a first pin 28. Thus, the coordinated arrangement of the first support plate 26 and the first lug 27 provides good support and position limiting for one end of the hydraulic cylinder 53, ensuring the stability of the hydraulic cylinder 53 during extension and retraction. Furthermore, the hinged connection between one end of the hydraulic cylinder 53 and the first lug 27 provides a good steering foundation for the riding agricultural machine, making steering more stable and reliable.

[0049] Further, see Figure 3 The rear transmission case 3 is provided with a second support plate 32, on which a pair of second lugs 33 are spaced apart and opposed to each other. The other end of the hydraulic cylinder 53 is inserted between the pair of second lugs 33, and the other end of the hydraulic cylinder 53 is hingedly connected to the pair of second lugs 33 via a second pin 34. Thus, the coordinated arrangement of the second support plate 32 and the second lugs 33 also provides good support and position limiting for the other end of the hydraulic cylinder 53, further enhancing the stability of the transmission device. Furthermore, the hinged connection between the other end of the hydraulic cylinder 53 and the second lugs 33 enables the hydraulic cylinder 53 to drive the rear transmission case 3 to rotate relative to the front transmission case 2 during extension and retraction, thereby achieving steering of the ride-on agricultural machine and saving manpower.

[0050] Further, see Figure 3 and Figure 4 The first support plate 26 and / or the second support plate 32 are arranged in an L-shape. Thus, by configuring the first support plate 26 and / or the second support plate 32 in an L-shape, the support plates can be made more durable and more sturdy, and can better support and limit the hydraulic cylinder 53, thereby improving the reliability and stability of the transmission device. Of course, in the present application, the first support plate 26 and the second support plate 32 can also be configured as other structures, and this is not a limitation here.

[0051] Further, see Figure 3 and Figure 4 The first lug 27 and / or the second lug 33 are arranged in a triangular shape. Thus, by arranging the first lug 27 and / or the second lug 33 in a triangular shape, the lugs can be made stronger and can be better articulated with the hydraulic cylinder 53, thereby improving the stability and reliability of the transmission device.

[0052] Further, see Figure 5 As shown, the power assembly 24 includes an engine 241, a drive shaft 242, and a plurality of shift gears 243. The drive shaft 242 is connected to the engine 241 by transmission. The plurality of shift gears 243 are sleeved on the drive shaft 242 and arranged at intervals. The power output shaft 21 is provided with a rotating gear 244, which meshes with the shift gears 243. In this way, the engine 241 drives the drive shaft 242 to rotate, and the drive shaft 242 drives the plurality of shift gears 243 to rotate. The operator can select different shift gears 243 to mesh with the rotating gears 244 on the power output shaft 21 through the shifting operation, thereby adjusting the power output of the agricultural management machine. This design enables the agricultural management machine to adapt to different farming needs and soil conditions, improving the applicability and flexibility of the agricultural management machine.

[0053] Further, see Figure 5 and Figure 6 As shown, the power output shaft 21 is provided with a third universal joint 29, and the first universal joint 42 is connected to the third universal joint 29 via a cross shaft 44. By adopting the cross shaft 44 to connect the first universal joint 42 and the third universal joint 29, the power transmission can be made more stable and reliable, avoiding power loss or transmission failure caused by unstable universal joint connection. The design of the cross shaft 44 connection allows the first universal joint 42 and the third universal joint 29 to rotate relative to each other, adapting to the power transmission requirements at different angles, and further improving the flexibility and adaptability of the transmission device. At the same time, the cross shaft 44 connection also has good strength and durability, and can withstand large torque and load, ensuring the stability and reliability of the agricultural management machine under long-term, high-intensity operation.

[0054] Preferably, in the present application, a fourth universal joint 35 is provided on the power input shaft 31, and the fourth universal joint 35 is connected to the second universal joint 43 via a cross shaft 44. In this way, the first universal joint 42 is connected to the third universal joint 29 via the cross shaft 44, and the second universal joint 43 is connected to the fourth universal joint 35 via the cross shaft 44, so that the transmission shaft body 41 can be movably connected to the front gearbox 2 and the rear gearbox 3 respectively, so that the vertical position between the front gearbox 2 and the rear gearbox 3 can be relatively adjusted to adapt to different working scenarios, and at the same time, it can also achieve bending and steering.

[0055] This application also provides a riding agricultural management machine, please refer to Figures 1 to 9 As shown, it specifically includes a frame 1, a front gearbox 2, a rear gearbox 3, and a transmission shaft 4. The front gearbox 2 and the rear gearbox 3 are arranged on the frame 1 at an interval. The transmission shaft 4 can be used to transmit and connect the front gearbox 2 and the rear gearbox 3. In addition, a brake pedal device 6 is also provided on the frame 1. The brake pedal device 6 can be used to brake the rotation of the power input shaft 31 in the rear gearbox 3. The specific structure of the transmission shaft 4 is the transmission shaft 4 structure as described above, which is not the only limitation here.

[0056] Further, see Figure 7 As shown, the brake pedal mechanism 6 includes a pedal 61, a brake drum 62, and a cable 63. The pedal 61 is provided on the frame 1, and the brake drum 62 is mounted on the power input shaft 31 in the rear gearbox 3. The cable 63 can be used to connect the pedal 61 and the brake drum 62. In this way, by stepping on the pedal 61, the cable 63 pulls the brake drum 62, and the brake drum 62 brakes the power input shaft 31, thereby realizing the braking function of the riding agricultural management machine.

[0057] Further, see Figures 7 to 9As shown, the pedal 61 includes a base plate 611, a pedal 612, and a connecting plate 613. One end of the pedal 612 is hinged to the base plate 611, and one end of the connecting plate 613 is connected to the pedal 612 through a first hinge shaft 616. The other end of the connecting plate 613 is provided with a connecting shaft 614. A pair of slide openings 615 are opened on the base plate 611 along its length direction. The pair of slide openings 615 can be used for the two ends of the connecting shaft 614 to pass through. In addition, bearings 617 are respectively provided at both ends of the connecting shaft 614, and each bearing 617 is respectively arranged in each slide opening 615. The base plate 611 is also provided with a cable 63 connected to the connecting shaft 614. The pedal 612 is hinged to one end of the base plate 611, so that the pedal 612 can rotate relative to the base plate 611; a pair of slide openings 615 are opened on the base plate 611 along its length direction, and bearings 617 are sleeved on both ends of the connecting shaft 614, and the bearings 617 are set in the slide openings 615. When the pedal 612 is stepped on, the connecting shaft 614 can slide along the slide openings 615 through the bearings 617. When the pedal 612 is rotated to a certain threshold angle, the sliding resistance during the sliding process is greatly reduced due to the coordinated design of the slide openings 615 and the bearings 617, making pedaling more labor-saving and effectively improving the comfort and stability of the vehicle.

[0058] Preferably, the threshold angle is a rotation to the 10 o'clock direction.

[0059] In the present application, by stepping on the pedal 612, the pedal 612 can push the connecting shaft 614 to slide along the slide mouth 615 through the connecting plate 613, and the slide mouth 615 can then drive the cable 63 to move to achieve braking; when the foot leaves the pedal 612, the reset reaction force of the cable 63 can restore the connecting shaft 614 to its original position, and then restore the pedal 612 to its original position, thereby completing a complete pedal 612 operation.

[0060] Further, see Figure 7 and Figure 8 As shown, the connecting shaft 614 is provided with a first retaining ring 6141 and a second retaining ring 6142 at both ends, respectively. One end of the connecting shaft 614 is provided with a latch hole, into which a positioning pin 6143 is inserted. Thus, the provision of the first retaining ring 6141 and the second retaining ring 6142 prevents the bearing 617 from falling out of the slideway opening 615. The provision of the latch hole and the positioning pin 6143 allows the connecting shaft 614 to be positioned, while preventing the connecting shaft 614 from moving within the slideway opening 615, further improving the stability of the structure.

[0061] Further, see Figure 7As shown, the cable 63 is provided with a collar 64 that fits tightly around the connecting shaft 614, thereby ensuring a secure connection between the cable 63 and the connecting shaft 614. Thus, one end of the cable 63 is fixedly connected to the connecting shaft 614, while the other end can be connected to the brake system of the agricultural machinery. Thus, when the pedal 612 is stepped on, the pedal pushes the connecting shaft 614 along the slideway 615 via the connecting plate 613, and the cable 63 is simultaneously pulled, triggering the brake system to apply the brakes. When the foot leaves the pedal 612, the brake system returns the cable 63 to its original position via its return spring or other reset mechanism, thereby returning the connecting shaft 614 and the pedal 612 to their initial positions, ready for the next pedal 612 operation.

[0062] Preferably, the slideway opening 615 is a long strip through hole. Of course, according to actual conditions and specific needs, the slideway opening 615 can also be set to other shapes, which is not limited here.

[0063] Further, see Figure 7 As shown, the connecting plate 613 includes a pair of vertical plates 6131 spaced apart from each other, a connecting block 6132 being provided on the vertical plates 6131, and a baffle 6133 being provided on the bottom plate 611, the baffle 6133 being capable of abutting the connecting block 6132. By providing the baffle 6133, when the connecting block 6132 moves to abut against the baffle 6133, the movement of the connecting block 6132 is limited, thereby limiting the rotation angle of the pedal 612, preventing damage to the structure caused by excessive rotation of the pedal 612, and further improving the stability and durability of the structure.

[0064] Preferably, the baffle 6133 is U-shaped, which not only makes the structure of the baffle 6133 more stable, but also can be easily connected and fixed to the bottom plate 611. Of course, according to actual conditions and specific needs, the baffle 611 can also be set to other shapes, which is not limited here.

[0065] Further, see Figure 7 As shown, the pedal 612 is provided with a pair of first lifting ears 6121, which are hinged to a pair of upright plates 6131 on the connecting plate 613 via a first hinge shaft. This design not only ensures a stable connection between the pedal 612 and the connecting plate 613, but also makes the pedal 612 rotate more smoothly and reduces rotational resistance.

[0066] Also, see Figure 8As shown, the pedal 612 is further provided with a pair of second lifting ears 6122, which are hinged to the base plate 611 via a second hinge shaft. This not only enhances the connection strength between the pedal 612 and the base plate 611, but also provides a certain buffering effect during the rotation of the pedal 612, reducing the impact force generated by the pedal 612 on the base plate 611, thereby improving the comfort and stability of the agricultural machinery.

[0067] In this embodiment, in order to position the cable 63 and prevent the cable 63 from deflecting or shaking during the pulling process, a fixing plate 618 is further provided on the bottom plate 611. The fixing plate 618 is provided with a positioning hole adapted to the cable 63, so that the cable 63 can be positioned and fixed.

[0068] Preferably, in this embodiment, see Figure 9 As shown, the cable 63 includes a rope 631 and a noose 632 that is sleeved on the rope 632. The noose 632 is provided with a positioning nut 633. On the one hand, the position of the noose 632 on the rope 631 can be adjusted by rotating the positioning nut 633, thereby adjusting the length of the cable. On the other hand, the positioning nut 633 abuts against the fixing plate 618, thereby fixing the noose 632 and allowing the rope 631 to move relative to the noose 632.

[0069] Further, see Figure 1 As shown, the riding agricultural management machine further includes a seat 7, which is arranged on the frame 1. The setting of the seat 7 provides a comfortable riding environment for the operator, making it less likely for the operator to feel tired during long-term operation, thereby improving the operating comfort and humanized design of the riding agricultural management machine.

[0070] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A transmission device, characterized in that: It includes a front gearbox, a rear gearbox, and a transmission shaft for connecting the front gearbox and the rear gearbox, the transmission shaft includes a transmission shaft body, a first universal joint arranged at one end of the transmission shaft body and connected to the power output shaft in the front gearbox, and a second universal joint arranged at the other end of the transmission shaft body and connected to the power input shaft in the rear gearbox. The front gearbox is provided with a hydraulic steering mechanism, the front gearbox includes a first rotating shaft with a first bevel gear at the end, and a power assembly for driving the first rotating shaft to rotate, the power output shaft is provided with a second bevel gear meshing with the first bevel gear, and the axial direction of the first rotating shaft is inclined to the axial direction of the power output shaft.

2. A transmission device according to claim 1, characterized in that: The angle between the axial direction of the first rotating shaft and the axial direction of the power output shaft is 6-15°.

3. A transmission device according to claim 1, characterized in that: The hydraulic steering mechanism includes a steering column arranged on the front gearbox, a steering wheel installed on one end of the steering column, a hydraulic pump installed on the frame, and hydraulic cylinders with two ends respectively arranged on the front gearbox and the rear gearbox. The other end of the steering column is provided with a hydraulic steering gear connected to the hydraulic cylinder, and the hydraulic pump is connected to the hydraulic steering gear.

4. A transmission device according to claim 3, characterized in that: The front gearbox is provided with a first support plate, on which a pair of first lugs are provided at intervals and opposite to each other. One end of the hydraulic cylinder is inserted between the pair of first lugs, and one end of the hydraulic cylinder is hinged to the pair of first lugs through a first pin shaft.

5. A transmission device according to claim 3, characterized in that: The power assembly includes an engine, a drive shaft connected to the engine, and a plurality of shift gears sleeved on the drive shaft and arranged at intervals. The power output shaft is provided with a rotating gear meshing with the shift gears.

6. A transmission device according to claim 1, characterized in that: The power output shaft is provided with a third universal joint, and the first universal joint is connected to the third universal joint via a cross shaft.

7. A riding agricultural management machine, characterized in that: include: frame; A front gearbox and a rear gearbox are arranged on the frame at intervals. a transmission shaft for connecting the front gearbox and the rear gearbox in transmission; and a brake pedal mechanism, disposed on the frame, for braking the rotation of the power output shaft in the rear gearbox; The transmission shaft is the transmission shaft according to any one of claims 1 to 6.

8. The riding agricultural management machine according to claim 7, characterized in that: The brake pedal mechanism includes a pedal arranged on the frame, a brake drum installed on the power input shaft in the rear gearbox, and a cable for connecting the pedal and the brake drum.

9. The riding agricultural management machine according to claim 8, characterized in that: The pedal includes a base plate, a pedal hinged to the base plate at one end, and a connecting plate hinged to the pedal through a first hinge shaft at one end. A connecting shaft is provided at the other end of the connecting plate. A pair of slide openings are provided on the base plate along its length direction for the two ends of the connecting shaft to pass through. Bearings are respectively provided at both ends of the connecting shaft, and each bearing is correspondingly arranged in each slide opening. One end of the cable is connected to the brake drum, and the other end of the cable is connected to the connecting shaft.

10. The riding agricultural management machine according to claim 9, characterized in that: The two ends of the connecting shaft are respectively sleeved with a first retaining ring and a second retaining ring. One end of the connecting shaft is provided with a pin hole, and a positioning pin is inserted into the pin hole.

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