Square grass bundling machine with gear transmission replacing chain wheel transmission

Abstract

The utility model relates to the technical field of square grass bundling machines, in particular to a square grass bundling machine with gear transmission replacing chain wheel transmission, which comprises a rack, a power device, a transmission device, a grass fork device, a pick-up device and a knotter, the power device, the grass fork device, the pick-up device and the knotter are respectively connected with the rack, and the transmission device is connected with the rack. The grass fork device, an input shaft of the pick-up device and an input handle of the knotter are all arranged in the first direction, the transmission device is arranged on one side of the rack, and an output shaft of the power device is arranged in the first direction and is in driving connection with the transmission device. The transmission device is used for receiving the power of the power device and simultaneously driving the grass fork device, the pick-up device and the knotter to do timing motion. The method has the effect that the timing adjustment step from overload protection to the normal state is omitted.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of square straw bundling machines, in particular to a square straw bundling machine with gear transmission instead of chain wheel transmission. BACKGROUND

[0002] A bundling machine is an important component of agricultural machinery and is widely used for collecting and packing crop straw, pasture and other materials. With the development of modern agriculture, efficient bundling machines not only improve work efficiency, but also reduce labor costs, which is of great significance for promoting the process of agricultural mechanization.

[0003] In the related art of square straw bundling machines, chain transmission is used to achieve high efficiency. This usually requires precise timing synchronization and coordination between components to effectively transmit power from the main power source to key components such as the grass fork device, the picker and the knotter. However, in actual use, due to the characteristics of crop straw, pasture and other materials, the key parts of the square straw bundling machine are easily overloaded and jammed, causing the torque to exceed the shear bolt, which breaks and triggers overload protection. From the overload protection to the normal state, the user needs to adjust the timing, and the timing adjustment steps are tedious. If the operation is not successful, the machine is started without completing the timing adjustment, which can easily cause internal structure interference and damage to the key structure. CONTENT OF THE INVENTION

[0004] In order to eliminate the timing adjustment steps from the overload protection to the normal state, the application provides a square straw bundling machine with gear transmission instead of chain wheel transmission.

[0005] The square straw bundling machine with gear transmission instead of chain wheel transmission provided by the application adopts the following technical solutions:

[0006] The utility model provides a square grass bundling machine which replaces chain wheel transmission with gear transmission, comprising a frame, a power device, a transmission device, a grass fork device, a picker and a knotter, the power device, the grass fork device, the picker and the knotter are connected with the frame respectively, input shafts of the grass fork device and the picker and an input handle of the knotter are arranged along a first direction, the transmission device is arranged on one side of the frame, an output shaft of the power device is arranged along the first direction and is drivingly connected with the transmission device, the transmission device is a fixed transmission ratio transmission, the transmission device has a total input end, a first output end, a second output end and a third output end, the total input end is drivingly connected with the first output end, the second output end and the third output end through gear transmission, the total input end is used for receiving power of the power device, the first output end is used for driving the grass fork device, the second output end is used for driving the picker, the third output end is used for driving the knotter, and the speed ratio of the total input end, the first output end, the second output end and the third output end is fixed.

[0007] By adopting the above technical scheme, effective connection of the output shaft of the power device and the transmission device is realized, and stability and reliability of power transmission are ensured. The design of gear transmission to determine the transmission ratio enables the grass fork device, the picker and the knotter to work cooperatively at the same time, reduces the difficulty of timing adjustment of the equipment when it is delivered, and, since the gear transmission can determine the transmission ratio and the matching state, the step of timing adjustment by the user is saved, the difficulty of re-adjustment and maintenance of the user after overload shutdown is reduced, and the production efficiency is further improved due to the reduction of a large amount of maintenance time.

[0008] Optionally, the transmission device comprises a first gear box, the first gear box comprises a first box body, a first input shaft and a first output shaft, the first input shaft serves as the total input end, the first box body is fixedly connected with the frame, the first input shaft is coaxially arranged with the output shaft of the power device, the first output shaft is perpendicular to the first input shaft, and the first input shaft and the first output shaft are movably connected with the first box body around their own axes, a first bevel gear is arranged on the first input shaft, a second bevel gear meshing with the first bevel gear is arranged on the first output shaft, and the first bevel gear and the second bevel gear are located in the first box body, and the first gear box is lubricated by lubricating oil.

[0009] By adopting the above technical scheme, the first input shaft is coaxially arranged with the output shaft of the power device, thereby ensuring high efficiency and stability of power transmission. The first bevel gear on the first input shaft is engaged with the second bevel gear on the first output shaft, thereby realizing effective transmission of power from the first input shaft to the first output shaft, and thereby transmitting power to subsequent working components. This design not only simplifies the transmission structure, but also fixes the transmission ratio, improves the operation efficiency and reliability of the entire system, reduces mechanical wear caused by chain transmission, and prolongs the service life of the equipment.

[0010] Optionally, the power device comprises a motor and a speed reducer, an output shaft of the motor is drivingly connected with an input shaft of the speed reducer, an output shaft of the speed reducer serves as the output shaft of the power device, the output shaft of the speed reducer is provided with a first flange plate, the first output shaft is provided with a second flange plate matched with the first flange plate, and the first flange plate and the second flange plate are connected through a first shear bolt.

[0011] By adopting the above technical scheme, the combination of the motor and the speed reducer can provide stable power output, thereby ensuring smooth operation of the entire machine. The output shaft of the motor is drivingly connected with the input shaft of the speed reducer, thereby effectively improving the power transmission efficiency. The output shaft of the speed reducer is provided with the first flange plate, and the first output shaft is provided with the second flange plate matched with the first flange plate, and the two are connected through the first shear bolt. This design not only realizes power transmission, but also protects the equipment from damage in the case of overload by breaking the first shear bolt, thereby prolonging the service life.

[0012] Optionally, the transmission device further comprises a second gear box, the second gear box comprises a second box body, a second input shaft and a second output shaft, the second output shaft serves as the first output end, the second box body is fixedly connected with the rack, the second input shaft is coaxially arranged with the first output shaft, and the second input shaft is drivingly connected with the first output shaft, the second output shaft is coaxially arranged with an input shaft of the grass fork device, and the second output shaft is drivingly connected with the input shaft of the grass fork device through a shaft coupling, the second output shaft is perpendicular to the second input shaft, and the second input shaft and the second output shaft are both connected with the second box body in a rotatable manner about their own axes, the second input shaft is provided with a third bevel gear, the second output shaft is provided with a fourth bevel gear engaged with the third bevel gear, and the third bevel gear and the fourth bevel gear are both located in the second box body. The second gear box is lubricated with lubricating oil.

[0013] By adopting the technical scheme, power is output from the first output shaft, transmitted to the second input shaft through transmission connection, and since the second input shaft is coaxially arranged with the first output shaft, power transmission is efficient and stable. Then, power is transmitted between the third bevel gear on the second input shaft and the fourth bevel gear on the second output shaft through gear meshing for 90-degree turning, so that power can be transmitted vertically to the second output shaft. The bevel gear meshing can realize stable transmission and turning of power on one hand, and fix the transmission ratio on the other hand, improve the operation efficiency and reliability of the whole system, reduce mechanical wear caused by chain transmission, and prolong the service life of the equipment. The second output shaft is connected with the input shaft of the grass fork device through a shaft coupling, so as to transmit power to the grass fork device and drive the grass fork device to work. The shaft coupling is used to connect the second output shaft and the input shaft of the grass fork device, which facilitates installation and disassembly, and improves the reliability and stability of transmission.

[0014] Optionally, the second input shaft and the first output shaft are connected through an adjusting assembly, the adjusting assembly comprises two round waist plates, the round waist plates are coaxially fixedly connected with the second input shaft and the first output shaft respectively, a plurality of waist holes and a plurality of threaded holes are arranged on the round waist plates, the waist holes and the threaded holes are alternately arranged around the center axis of the round waist plate, and the threaded holes of one of the two round waist plates correspond to the waist holes of the other.

[0015] By adopting the technical scheme, the two round waist plates are used as a transmission medium, the waist holes and the threaded holes are alternately arranged and matched, the angular alignment between the shafts is flexibly adjusted, and the compactness of the structure is maintained. The round waist plates are coaxially fixedly connected with the second input shaft and the first output shaft respectively, the coaxiality of transmission is ensured, and the stability and reliability of transmission are improved. The design of the waist holes and the threaded holes facilitates the installation and disassembly of the adjusting assembly, and facilitates the daily maintenance and maintenance of the transmission system.

[0016] Optionally, the transmission device further comprises a third gear box, the third gear box comprises a third output shaft, the third output shaft serves as the second output end, the third output shaft is coaxially arranged with the input shaft of the picker, and the third output shaft is connected with the input shaft of the picker through a shaft coupling, the third output shaft is connected with the second box body in a rotatable manner around the axis of the third output shaft, a first gear is arranged on the second output shaft, a second gear meshing with the first gear is arranged on the third output shaft, the first gear and the second gear are located in the second box body, and the third gear box is lubricated by grease.

[0017] By adopting the technical scheme, the first gear on the second output shaft is engaged with the second gear on the third output shaft, when the second output shaft rotates, the third output shaft is driven to rotate synchronously through gear engagement transmission. Since the third output shaft is coaxially arranged with the input shaft of the picker through the transmission connection of the shaft coupling, the rotation of the third output shaft is directly transmitted to the input shaft of the picker, thereby driving the picker to work. Through gear engagement transmission, the power transmission from the second output shaft to the third output shaft is realized, and the transmission ratio is also fixed, which reduces energy loss, improves the operation efficiency and reliability of the whole system, reduces mechanical wear caused by chain transmission, and prolongs the service life of the equipment.

[0018] Optionally, the transmission device further comprises a fourth gear box, the fourth gear box comprising a third input shaft, a hollow output shaft, a support rod and a connecting rod, the hollow output shaft serving as the third output end, the third input shaft being perpendicular to the second output shaft, the third input shaft being rotatably connected to the second box body about its own axis, the support rod being arranged along the first direction and fixedly connected with the rack, the first helical gear being arranged on the second output shaft, the second helical gear being arranged on the third input shaft and engaged with the first helical gear, the first helical gear and the second helical gear being located in the second box body, the hollow output shaft being sleeved on the support rod, the third helical gear being arranged on the third input shaft, the fourth helical gear being arranged on the hollow output shaft and matched with the third helical gear, the hollow output shaft being drivingly connected with the connecting rod to drive the connecting rod to rotate about the axis direction of the support rod, the end of the connecting rod away from the support rod being drivingly connected with the input handle of the knotter, the fourth gear box being lubricated by grease.

[0019] By adopting the technical scheme, the second output shaft starts to rotate, and the first helical gear arranged thereon rotates accordingly. Since the first helical gear is engaged with the second helical gear on the third input shaft, the rotation of the first helical gear drives the rotation of the second helical gear and the third input shaft. Further, the third helical gear arranged on the third input shaft rotates accordingly and matches with the fourth helical gear on the hollow output shaft, thereby driving the hollow output shaft to rotate about the axis of the support rod. The hollow output shaft is drivingly connected with the connecting rod, so the connecting rod also rotates about the axis direction of the support rod with the rotation of the hollow output shaft. Finally, the end of the connecting rod away from the support rod is drivingly connected with the input handle of the knotter, realizing the power transmission from the second output shaft to the knotter.

[0020] Optionally, the transmission device further comprises a cam, a wheel seat and a second shear bolt, the cam and the wheel seat are sleeved on the support rod, the wheel seat is in transmission connection with the hollow output shaft through a hollow shaft coupling, a positioning hole is arranged on the side of the wheel seat away from the fourth helical gear, a positioning column matched with the positioning hole is arranged on the side of the cam close to the wheel seat, one end of the connecting rod is in rotation connection with the connecting rod, the other end is in rotation connection with the input handle of the knotter, a first positioning hole is arranged on the connecting rod, a second positioning hole is arranged on the cam, and the second shear bolt is connected with the first positioning hole and the second positioning hole.

[0021] By adopting the above technical scheme, the hollow output shaft is in transmission connection with the wheel seat through the hollow shaft coupling, and stable power transmission is realized. The cooperation between the positioning column and the positioning hole between the wheel seat and the cam ensures the stability of the cam in the rotation process. The design of the cam enables it to simulate the running track of the knotter, which greatly facilitates the user to observe and adjust the working state of the knotter. In the transmission process, the connecting rod, as a key component, has one end in rotation connection with the wheel seat and the other end in rotation connection with the input handle of the knotter, realizing effective power transmission and conversion. The first positioning hole on the connecting rod and the second positioning hole on the cam are connected through the second shear bolt. This connection not only realizes power transmission, but also protects the knotter from damage in the case of overload by breaking the second shear bolt, prolongs the service life and improves the maintainability of the equipment.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. Through reasonable structural design, the input shaft of the grass fork device, the input shaft of the picker and the input handle of the knotter are arranged in the first direction, and the grass fork device, the picker and the knotter are driven and connected through the transmission device, and the power device provides power to the transmission device, ensuring the stability and reliability of power transmission;

[0024] 2. The transmission device uses gears for power transmission, realizing a simple and reliable transmission structure, reducing the difficulty of timing adjustment of the equipment when it is delivered, and at the same time, since the gear transmission can determine the transmission ratio and the matching state, the step of timing adjustment by the user is omitted, reducing the difficulty of re-adjustment and maintenance by the user after the equipment is stopped due to overload;

[0025] 3. The design of the adjusting assembly makes the shaft angle between the second input shaft and the first output shaft adjustable, further improving the adaptability and reliability of the equipment, and maintaining good synchronization performance under different working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1A structure schematic diagram of a square straw baler provided by the embodiment of the present application, which replaces chain wheel transmission with gear transmission.

[0027] Figure 2 A structure schematic diagram of a transmission device provided by the embodiment of the present application.

[0028] Figure 3 A structure schematic diagram of an internal structure of a first gear box provided by the embodiment of the present application.

[0029] Figure 4 A structure schematic diagram of an internal structure of the second gear box and the third gear box after assembly provided by the embodiment of the present application.

[0030] Figure 5 A structure schematic diagram of an internal structure of the second gear box and the fourth gear box after assembly provided by the embodiment of the present application.

[0031] Mark number explanation: 1-frame; 2-reducer; 201-first flange plate; 3-first box body; 4-first input shaft; 401-first bevel gear; 402-second flange plate; 403-first shearing bolt; 5-first output shaft; 501-second bevel gear; 6-second box body; 7-second input shaft; 701-third bevel gear; 8-second output shaft; 801-fourth bevel gear; 802-first gear; 803-first helical gear; 9-third output shaft; 901-second gear; 10-third input shaft; 1001-second helical gear; 1002-third helical gear; 11-fourth helical gear; 12-supporting rod; 13-connecting rod; 14-cam; 1401-second shearing bolt; 15-wheel seat; 16-round waist plate; 1601-waist hole; 1602-thread hole. DETAILED DESCRIPTION

[0032] The following will be described in detail in combination with the accompanying Figures 1-5 The present application will be further described in detail.

[0033] The square grass bundling machine in the related art comprises a rack, a power device, a transmission device, a grass fork device, a picker and a knotter, wherein the transmission device realizes the transmission between the components by adopting a chain transmission mode. The square grass bundling machine requires to ensure the precise timing synchronization and coordination between the components during use. If the timing synchronization is absent, interference may occur between the components of the square grass bundling machine, thereby causing damage to the components. However, in actual use, due to the characteristics of crop straw, pasture and other materials, the key part of the square grass bundling machine is easily entangled by plant fibers, thereby causing overload jamming, and the torque exceeds the shear bolt, the shear bolt is broken to trigger the overload protection. From the overload protection to the normal state, the user needs to adjust the timing, and the timing adjustment steps are tedious. Once the operation is failed, the machine is started without completing the timing adjustment, which is easy to cause internal structure interference, thereby causing damage to the key structure.

[0034] The embodiment of the application discloses a square grass bundling machine with gear transmission instead of chain wheel transmission.

[0035] As shown in Figure 1 The square grass bundling machine with gear transmission instead of chain wheel transmission comprises a rack 1, a power device, a transmission device, a grass fork device, a picker and a knotter. The power device, the grass fork device, the picker and the knotter are connected with the rack 1 respectively, and the input shafts of the grass fork device and the picker and the input handle of the knotter are arranged along a first direction. The transmission device is arranged on one side of the rack 1. The output shaft of the power device is arranged along the first direction and is drivingly connected with the transmission device. The transmission device is used for accepting the power of the power device and simultaneously driving the timing movement of the grass fork device, the picker and the knotter.

[0036] The effective connection between the output shaft of the power device and the transmission device ensures the stability and reliability of power transmission. This design enables the grass fork device, the picker and the knotter to work synchronously, avoids mutual interference, and thus improves the working efficiency and operation accuracy of the bundling machine. Especially in complex use environment, the synchronous movement between the components reduces the probability of mechanical failure, thereby prolonging the service life of the equipment.

[0037] As shown in Figure 2 and Figure 3As shown, the transmission device includes a first gear box, which includes a first box body 3, a first input shaft 4 as a total input end, and a first output shaft 5. The first box body 3 is fixedly connected with the rack 1, the first input shaft 4 is coaxially arranged with the output shaft of the power device, the first output shaft 5 is perpendicular to the first input shaft 4, and the first input shaft 4 and the first output shaft 5 are both connected with the first box body 3 in a rotatable manner about their own axes. A first bevel gear 401 is arranged on the first input shaft 4, and a second bevel gear 501 meshing with the first bevel gear 401 is arranged on the first output shaft 5. The first bevel gear 401 and the second bevel gear 501 are both located in the first box body 3, and the first gear box is lubricated by lubricating oil.

[0038] The first input shaft 4 is coaxially arranged with the output shaft of the power device, ensuring efficient and stable power transmission. The first bevel gear 401 on the first input shaft 4 and the second bevel gear 501 on the first output shaft 5 are precisely meshed, achieving efficient transmission of power from the first input shaft 4 to the first output shaft 5, and then transmitting power to subsequent working components. This design not only simplifies the transmission structure, but also establishes a fixed transmission ratio, improves the operating efficiency and reliability of the entire system, reduces mechanical wear caused by chain transmission, and prolongs the service life of the equipment.

[0039] As shown in Figure 2 and Figure 3 The power device includes a motor and a speed reducer 2. The output shaft of the motor is drivingly connected with the input shaft of the speed reducer 2. The output shaft of the speed reducer 2 serves as the output shaft of the power device. A first flange plate 201 is arranged on the output shaft of the speed reducer 2. A second flange plate 402 is arranged on the first output shaft 5 and cooperates with the first flange plate 201. The first flange plate 201 and the second flange plate 402 are connected by a first shear bolt 403. In this embodiment, the side of the first flange plate 201 close to the second flange plate 402 can be coaxially provided with a positioning ring, and the side of the second flange plate 402 close to the first flange plate 201 can be provided with a positioning flange cooperating with the positioning ring.

[0040] The combination of the motor and the reducer 2 can provide stable power output and ensure smooth operation of the entire machine. The output shaft of the motor is drivingly connected with the input shaft of the reducer 2, effectively improving the power transmission efficiency. The output shaft of the reducer 2 is provided with a first flange plate 201, and the first output shaft 5 is provided with a second flange plate 402 matched with the first flange plate 201, and the two are connected through a first shear bolt 403. This design not only can realize the transmission of power, but also can protect the equipment from being damaged by the fracture of the first shear bolt 403 in the case of overload, thereby prolonging the service life. When the first shear bolt 403 is broken, the power transmission of the motor will be interrupted, because the first shear bolt 403 is the key component connecting the second flange plate 402 on the first output shaft 5 and the first flange plate 201 on the output shaft of the reducer 2. The fracture means that the two parts will no longer be tightly connected, and the power cannot be effectively transmitted from the reducer 2 to the first output shaft 5, so as to make the motor and the reducer 2 run idly, thereby avoiding more serious damage to the motor, the reducer 2 and even the entire transmission device.

[0041] As shown in Figure 4 and Figure 5 The transmission device further comprises a second gear box, the second gear box comprising a second box body 6, a second input shaft 7 and a second output shaft 8, the second output shaft 8 serving as the first output end, the second box body 6 being fixedly connected with the rack 1, the second input shaft 7 being coaxially arranged with the first output shaft 5 and drivingly connected with the first output shaft 5, the second output shaft 8 being coaxially arranged with the input shaft of the grass fork device and drivingly connected with the input shaft of the grass fork device through a shaft coupling, the second output shaft 8 being perpendicular to the second input shaft 7, and the second input shaft 7 and the second output shaft 8 being both rotatably connected with the second box body 6 about their own axes, the second input shaft 7 being provided with a third bevel gear 701, and the second output shaft 8 being provided with a fourth bevel gear 801 engaged with the third bevel gear 701, the third bevel gear 701 and the fourth bevel gear 801 both being located in the second box body 6, and the second gear box being lubricated by lubricating oil.

[0042] The power is transmitted from the first output shaft 5 to the second input shaft 7. Since the second input shaft 7 is coaxially arranged with the first output shaft 5, the power transmission is not only efficient but also stable. Then, the power is transmitted between the third bevel gear 701 on the second input shaft 7 and the fourth bevel gear 801 on the second output shaft 8 through gear meshing to realize 90-degree turning transmission, ensuring that the power is transmitted to the second output shaft 8. The bevel gear meshing not only realizes stable transmission and turning of the power, but also fixes the transmission ratio, thereby improving the operation efficiency and reliability of the entire system, reducing the mechanical wear of chain transmission, and prolonging the service life of the equipment. The second output shaft 8 is connected to the input shaft of the rake device through a shaft coupling, and the power is transmitted to the rake device to drive it to work. The shaft coupling connecting the second output shaft 8 and the input shaft of the rake device facilitates installation and disassembly, and at the same time enhances the reliability and stability of the transmission.

[0043] As shown in Figure 3 and Figure 4 , the second input shaft 7 and the first output shaft 5 are connected by an adjusting assembly, which includes two round waist plates 16, which are coaxially fixedly connected with the second input shaft 7 and the first output shaft 5 respectively. A plurality of waist holes 1601 and a plurality of threaded holes 1602 are provided on the round waist plates 16, the waist holes 1601 and the threaded holes 1602 are alternately arranged around the center axis of the round waist plates 16, and the threaded holes 1602 of one of the two round waist plates 16 correspond to the waist holes 1601 of the other.

[0044] The two round waist plates 16 are used as transmission intermediates, and the alternating arrangement and cooperation of the waist holes 1601 and the threaded holes 1602 realize flexible adjustment of the angle alignment between the shafts, while maintaining the compactness of the structure. The round waist plates 16 are coaxially fixedly connected with the second input shaft 7 and the first output shaft 5 respectively, which ensures the coaxiality of the transmission and improves the stability and reliability of the transmission. The design of the waist holes 1601 and the threaded holes 1602 facilitates the installation and disassembly of the adjusting assembly, and also facilitates the daily maintenance and maintenance of the transmission system.

[0045] As shown in Figure 3 and Figure 4 , the transmission device further comprises a third gear box, the third gear box comprises a third output shaft 9, the third output shaft 9 is coaxially arranged with the input shaft of the picker as a second output end, and the third output shaft 9 is connected with the input shaft of the picker through a shaft coupling, the third output shaft 9 is connected with the second box body 6 rotatably around its own axis, the second output shaft 8 is provided with a first gear 802, and the third output shaft 9 is provided with a second gear 901 meshing with the first gear 802, the first gear 802 and the second gear 901 are located in the second box body 6, and the third gear box is lubricated by grease.

[0046] The first gear 802 on the second output shaft 8 is in meshing engagement with the second gear 901 on the third output shaft 9. When the second output shaft 8 rotates, the third output shaft 9 is able to rotate synchronously through the gear meshing transmission mechanism. Since the third output shaft 9 is connected to the input shaft of the picker through a shaft coupling and is coaxially arranged, the rotation of the third output shaft 9 is directly transmitted to the input shaft of the picker, thereby driving the picker to operate. This gear meshing transmission mode not only realizes the effective transmission of power from the second output shaft 8 to the third output shaft 9, but also ensures the stability of the transmission ratio, reduces energy loss, and improves the operating efficiency and reliability of the entire system. At the same time, it reduces the mechanical wear of chain transmission and prolongs the service life of the equipment.

[0047] As shown in Figure 3 and Figure 5 , the transmission device further comprises a fourth gear box, the fourth gear box comprising a third input shaft 10, a hollow output shaft as a third output end, a support rod 12 and a connecting rod 13, the third input shaft 10 being perpendicular to the second output shaft 8, the third input shaft 10 being rotatably connected to the second box body 6 about its own axis, the support rod 12 being arranged in a first direction and fixedly connected to the rack 1, a first helical gear 803 being arranged on the second output shaft 8, a second helical gear 1001 being arranged on the third input shaft 10 and being in meshing engagement with the first helical gear 803, the first helical gear 803 and the second helical gear 1001 being located in the second box body 6, the hollow output shaft being sleeved on the support rod 12, a third helical gear 1002 being arranged on the third input shaft 10, a fourth helical gear 11 being arranged on the hollow output shaft and being in cooperation with the third helical gear 1002, the hollow output shaft being drivingly connected with the connecting rod 13 to drive the connecting rod 13 to rotate about the axis direction of the support rod 12, the end of the connecting rod 13 away from the support rod 12 being drivingly connected with the input handle of the knotter.

[0048] When the second output shaft 8 starts to rotate, the first helical gear 803 arranged thereon rotates accordingly. Since the first helical gear 803 is in meshing engagement with the second helical gear 1001 on the third input shaft 10, the rotation of the first helical gear 803 drives the rotation of the second helical gear 1001 and the third input shaft 10. Further, the third helical gear 1002 arranged on the third input shaft 10 rotates accordingly and cooperates with the fourth helical gear 11 on the hollow output shaft, thereby driving the hollow output shaft to rotate about the axis of the support rod 12. The hollow output shaft is drivingly connected with the connecting rod 13, so the connecting rod 13 also rotates about the axis direction of the support rod 12 with the rotation of the hollow output shaft. Finally, the end of the connecting rod 13 away from the support rod 12 is drivingly connected with the input handle of the knotter, realizing the transmission of power from the second output shaft 8 to the knotter.

[0049] As shown in Figure 3 and Figure 5As shown, the transmission device further includes a cam 14, a wheel seat 15, and a second shear bolt 1401, the cam 14 and the wheel seat 15 are both sleeved on the support rod 12, the wheel seat 15 is in transmission connection with the hollow output shaft through a hollow shaft coupling, a positioning hole is arranged on the side of the wheel seat 15 away from the fourth helical gear 11, a positioning column is arranged on the side of the cam 14 close to the wheel seat 15, the positioning column is matched with the positioning hole, one end of the connecting rod 13 is in rotation connection with the connecting rod 13, the other end is in rotation connection with the input handle of the knotter, a first positioning hole is arranged on the connecting rod 13, a second positioning hole is arranged on the cam 14, and the second shear bolt 1401 is connected with the first positioning hole and the second positioning hole.

[0050] The hollow output shaft is in transmission connection with the wheel seat 15 through a hollow shaft coupling, so that the stable transmission of power is realized. The cooperation between the positioning column and the positioning hole between the wheel seat 15 and the cam 14 ensures the stability of the cam 14 in the rotation process. The design of the cam 14 enables it to simulate the running track of the knotter, which greatly facilitates the user to observe and adjust the working state of the knotter. In the transmission process, the connecting rod 13, as a key component, has one end in rotation connection with the wheel seat 15 and the other end in rotation connection with the input handle of the knotter, so that the effective transmission and conversion of power are realized. The first positioning hole on the connecting rod 13 and the second positioning hole on the cam 14 are connected through the second shear bolt 1401. This connection mode not only realizes the transmission of power, but also protects the knotter from being damaged in the overload condition through the rupture of the second shear bolt 1401, prolongs the service life, and improves the maintainability of the equipment.

[0051] The implementation principle of the square straw baler of the application embodiment in which the gear transmission replaces the chain wheel transmission is as follows:

[0052] After the power device is started, the power output by the motor is decelerated through the speed reducer 2 and transmitted to the output shaft of the speed reducer 2. The first flange plate 201 on the output shaft of the speed reducer 2 is connected with the second flange plate 402 of the first input shaft 4 through the first shear bolt 403, so as to transmit the power to the first input shaft 4. The first bevel gear 401 on the first input shaft 4 is in precise meshing with the second bevel gear 501 on the first output shaft 5, so as to ensure that the power is efficiently and stably transmitted from the first input shaft 4 to the first output shaft 5. The bevel gear meshing design ensures the fixed transmission ratio, and improves the running efficiency and reliability of the system.

[0053] Then, the power is transmitted from the first output shaft 5 to the second input shaft 7. The second input shaft 7 is coaxially and adjustably connected with the first output shaft 5 through the adjusting assembly, which not only ensures the efficiency of power transmission, but also provides the necessary flexibility. The design of the adjusting assembly facilitates installation, disassembly and daily maintenance, and at the same time ensures the coaxiality and stability of the transmission.

[0054] The power on the third bevel gear 701 of the second input shaft 7 is transmitted through gear engagement between the third bevel gear 701 and the fourth bevel gear 801 on the second output shaft 8 by 90 degrees, so that the power can be transmitted vertically to the second output shaft 8, and then through the engagement between the first gear 802 on the second output shaft 8 and the second gear 901 on the third output shaft 9, the effective transmission of power from the second output shaft 8 to the third output shaft 9 is realized. The second output shaft 8 is drivingly connected with the input shaft of the rake device through a shaft coupling, so as to transmit power to the rake device and drive the rake device to work. The third output shaft 9 is connected with the input shaft of the picker through a shaft coupling, so that the picker can work synchronously. This gear engagement transmission mode ensures the stability of the transmission ratio and minimizes the energy loss.

[0055] Meanwhile, the first helical gear 803 on the second output shaft 8 is engaged with the second helical gear 1001 on the third input shaft 10 to transmit power to the third input shaft 10. The third helical gear 1002 on the third input shaft 10 cooperates with the fourth helical gear 11 on the hollow output shaft to drive the hollow output shaft to rotate around the support rod 12. The hollow output shaft is drivingly connected with the input handle of the knotter through the connecting rod 13, and finally transmits power to the knotter.

[0056] In summary, the square grass bundling machine with gear transmission instead of chain wheel transmission of the embodiment of the application realizes the efficient and stable transmission of power from the power device to each working component through the carefully designed transmission device. The synchronous operation between each component not only improves the work efficiency, but also reduces the occurrence rate of mechanical failure and prolongs the service life of the equipment.

[0057] The above are the preferred embodiments of the application, which do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A square bale baler with a gear drive instead of a sprocket drive, characterised in that, The utility model relates to a mower, which comprises a frame (1), a power device, a transmission device, a rake device, a picker and a knotter, the power device, the rake device, the picker and the knotter are connected with the frame (1) respectively, input shafts of the rake device and the picker and an input handle of the knotter are arranged along a first direction, the transmission device is arranged on one side of the frame (1), an output shaft of the power device is arranged along the first direction and is drivingly connected with the transmission device, the transmission device is a fixed-ratio transmission, the transmission device has a total input end, a first output end, a second output end and a third output end, the total input end is drivingly connected with the first output end, the second output end and the third output end through gear transmission, the total input end is used for receiving power of the power device, the first output end is used for driving the rake device, the second output end is used for driving the picker, the third output end is used for driving the knotter, and the speed ratio of the total input end, the first output end, the second output end and the third output end is fixed. The transmission device comprises a first gear box, the first gear box comprises a first box body (3), a first input shaft (4) and a first output shaft (5), the first input shaft (4) is taken as the total input end, the first box body (3) is fixedly connected with the frame (1), the first input shaft (4) is coaxially arranged with the output shaft of the power device, the first output shaft (5) is perpendicular to the first input shaft (4), and the first input shaft (4) and the first output shaft (5) are connected with the first box body (3) in a rotatable mode about the axes thereof, a first bevel gear (401) is arranged on the first input shaft (4), a second bevel gear (501) is arranged on the first output shaft (5) and is engaged with the first bevel gear (401), and the first bevel gear (401) and the second bevel gear (501) are located in the first box body (3), wherein the first gear box is lubricated by lubricating oil.

2. The square bale baler with a gear drive in place of a sprocket drive as claimed in claim 1, characterized in that, The power device comprises a motor and a speed reducer (2), an output shaft of the motor is drivingly connected with an input shaft of the speed reducer (2), an output shaft of the speed reducer (2) is taken as the output shaft of the power device, a first flange plate (201) is arranged on the output shaft of the speed reducer (2), a second flange plate (402) is arranged on the first output shaft (5) and is matched with the first flange plate (201), and the first flange plate (201) and the second flange plate (402) are connected through a first shear bolt (403).

3. The square bale baler with gear drive in place of sprocket drive as claimed in claim 2, wherein, ​ 4. The square bale baler with gear drive in place of sprocket drive of claim 2, wherein, The transmission device further comprises a second gear box, the second gear box comprising a second box body (6), a second input shaft (7) and a second output shaft (8), the second output shaft (8) serving as the first output end, the second box body (6) being fixedly connected with the frame (1), the second input shaft (7) being coaxially arranged with the first output shaft (5) and being in transmission connection with the first output shaft (5), the second output shaft (8) being coaxially arranged with the input shaft of the fork device and being in transmission connection with the input shaft of the fork device through a shaft coupling, the second output shaft (8) being perpendicular to the second input shaft (7), and the second input shaft (7) and the second output shaft (8) are both connected with the second box body (6) in a rotatable manner about their own axes, a third bevel gear (701) being arranged on the second input shaft (7), and a fourth bevel gear (801) being arranged on the second output shaft (8) and being in meshing connection with the third bevel gear (701), the third bevel gear (701) and the fourth bevel gear (801) being located in the second box body (6), and the second gear box being lubricated by lubricating oil.

5. The square bale baler with gear drive in place of sprocket drive as claimed in claim 4, wherein, The second input shaft (7) is in transmission connection with the first output shaft (5) through an adjusting assembly, the adjusting assembly comprising two round waist plates (16), the round waist plates (16) being coaxially and fixedly connected with the second input shaft (7) and the first output shaft (5) respectively, a plurality of waist holes (1601) and a plurality of threaded holes (1602) being arranged on the round waist plates (16), the waist holes (1601) and the threaded holes (1602) being alternately arranged around the central axis of the round waist plates (16), the threaded holes (1602) of one of the two round waist plates (16) corresponding to the waist holes (1601) of the other.

6. The square bale baler with gear drive in place of sprocket drive of claim 4 wherein, The transmission device further comprises a third gear box, the third gear box comprising a third output shaft (9), the third output shaft (9) serving as the second output end, the third output shaft (9) being coaxially arranged with the input shaft of the picker and being in transmission connection with the input shaft of the picker through a shaft coupling, the third output shaft (9) being connected with the second box body (6) in a rotatable manner about its own axis, a first gear (802) being arranged on the second output shaft (8), and a second gear (901) being arranged on the third output shaft (9) and being in meshing connection with the first gear (802), the first gear (802) and the second gear (901) being located in the second box body (6), and the third gear box being lubricated by lubricating grease.

7. The square bale baler with gear drive in place of sprocket drive of claim 4 wherein, The transmission device further comprises a fourth gear box, the fourth gear box comprising a third input shaft (10), a hollow output shaft, a support rod (12) and a connecting rod (13), the hollow output shaft serving as the third output end, the third input shaft (10) being connected to the second box body (6) rotatably about its own axis, the support rod (12) being arranged along the first direction and fixedly connected to the rack (1), the second output shaft (8) being provided with a first helical gear (803), the third input shaft (10) being provided with a second helical gear (1001) engaged with the first helical gear (803), the first helical gear (803) and the second helical gear (1001) being located in the second box body (6), the hollow output shaft being sleeved on the support rod (12), the third input shaft (10) being provided with a third helical gear (1002), the hollow output shaft being provided with a fourth helical gear (11) matched with the third helical gear (1002), the hollow output shaft being drivingly connected to the connecting rod (13) to drive the connecting rod (13) to rotate about the axis of the support rod (12), one end of the connecting rod (13) away from the support rod (12) being drivingly connected to the input handle of the knotter, the fourth gear box being lubricated by grease.

8. The square bale baler with gear drive in place of sprocket drive of claim 7, wherein, The transmission device further comprises a cam (14), a wheel seat (15) and a second shear bolt (1401), the cam (14) and the wheel seat (15) being sleeved on the support rod (12), the wheel seat (15) being drivingly connected to the hollow output shaft through a hollow shaft coupling, one side of the wheel seat (15) away from the fourth helical gear (11) being provided with a positioning hole, one side of the cam (14) close to the wheel seat (15) being provided with a positioning column matched with the positioning hole, one end of the connecting rod (13) being rotatably connected to the connecting rod (13) and the other end being rotatably connected to the input handle of the knotter, the connecting rod (13) being provided with a first positioning hole, the cam (14) being provided with a second positioning hole, the second shear bolt (1401) being connected to the first positioning hole and the second positioning hole simultaneously.

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