Suspension mechanism of farming machine

Abstract

The utility model discloses a suspension mechanism of a farming machine, which comprises a lifting bracket mechanism arranged at the rear end of a tractor and used for lifting a rotary tillage mechanism, and the lifting bracket mechanism is provided with a fastening quick-assembly frame facilitating quick assembly and disassembly of the rotary tillage mechanism. The lifting bracket mechanism comprises at least four pull rod assemblies arranged between the buckling quick-mounting frame and the tractor, and a lifting lower connecting rod hinged to the buckling quick-mounting frame. The upper lifting connecting rod is hinged to the tractor and movably hinged to the lower lifting connecting rod; and the driving ejector rod is hinged to the tractor, hinged to the upper lifting connecting rod and pushes the upper lifting connecting rod to swing. The four pull rod assemblies are adopted to support the cantilever of the buckling quick-mounting frame, the driving ejector rod pushes the lifting upper connecting rod to drive the lifting lower connecting rod to pull the buckling quick-mounting frame to ascend and descend, and the rotary tillage mechanism is hung and buckled on the buckling quick-mounting frame, so that the rotary tillage mechanism is stably supported by the lifting bracket mechanism.

Description

Technical Field:

[0001] The utility model relates to the field of agricultural machinery, and particularly refers to a suspension mechanism of a farming machine. Background Art:

[0002] Currently, large-scale agricultural tillage machinery mainly consists of two parts: a locomotive and a tillage device. The locomotive generally uses a tractor driven by a diesel internal combustion engine. The tillage device is installed on the locomotive or towed by the locomotive to achieve operations in the farmland. With the continuous development of new energy technologies, currently, small and medium-sized farming machines on the market have gradually started to use electric tractors as the power devices of the farming machines. Compared with traditional tractors, electric tractors not only save energy and are environmentally friendly but also have the advantages of smaller volume, lower noise, lower maintenance costs, simple operation (can be driverless), and high reliability, and are increasingly favored by the market.

[0003] Currently, farming machines using electric tractors on the market are usually in a driverless mode and work by remotely operating the farming machine. For example, a kind of agricultural rotary tiller with the Chinese patent publication number: CN 114271046 A. This patent includes: a traction locomotive 1, a rotary tillage mechanism 2, a traction mechanism 30 for connecting the traction locomotive 1 and the rotary tillage mechanism 2, a flipping drive member 6, and a support mechanism 8. However, this patent solution still has the following deficiencies:

[0004] 1. Since the traction mechanism 30 lacks sufficient support, the entire farming machine will swing left and right due to uneven ground during driving or in the retracted state, unable to maintain balance. If the swing amplitude is too large, it may also cause the vehicle to overturn;

[0005] 2. The rotary tillage mechanism 2 is fixed on the traction locomotive 1 through the traction mechanism 30, but the traction mechanism 30 is fastened with bolts, which is inconvenient for disassembly and assembly, and the rotary tillage mechanism 2 cannot be quickly replaced and maintained, resulting in poor versatility.

[0006] In view of this, the inventor proposes the following technical solutions. Content of the Utility Model:

[0007] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a suspension mechanism of a farming machine.

[0008] To solve the above technical problems, the present utility model adopts the following technical solutions: A suspension mechanism for an agricultural tiller, comprising: a lifting bracket mechanism disposed at the rear end of a tractor and used for lifting and lowering a rotary tillage mechanism, and a snap-fastening frame is disposed on the lifting bracket mechanism to facilitate the quick disassembly and assembly of the rotary tillage mechanism; the lifting bracket mechanism includes at least four tie rod assemblies disposed between the snap-fastening frame and the tractor, a lifting lower connecting rod hingedly installed on the snap-fastening frame, a lifting upper connecting rod hingedly installed on the tractor and movably hinged to the lifting lower connecting rod, and a driving ejector rod hingedly installed on the tractor and hinged to the lifting upper connecting rod to push it to swing.

[0009] Furthermore, in the above technical solution, the tie rod assembly includes a support sleeve, a first fish-eye ball head and a second fish-eye ball head telescopically disposed at both ends of the support sleeve, a first fixing bolt rod for fixing the first fish-eye ball head to the snap-fastening frame, a first fish-eye mounting sleeve and a second fish-eye mounting sleeve sleeved on the first fixing bolt rod and pressing against both sides of the first fish-eye ball head, a first fish-eye ball disposed inside the end of the first fish-eye ball head and used for mating and docking with the first fish-eye mounting sleeve and the second fish-eye mounting sleeve, a second fixing screw rod for fixing the second fish-eye ball head to the tractor, a third fish-eye mounting sleeve and a fourth fish-eye mounting sleeve sleeved on the second fixing screw rod and pressing against both sides of the second fish-eye ball head, and a second fish-eye ball disposed inside the end of the second fish-eye ball head and used for mating and docking with the third fish-eye mounting sleeve and the fourth fish-eye mounting sleeve.

[0010] Furthermore, in the above technical solution, the driving ejector rod and the lifting upper connecting rod are connected through a third fish-eye ball head, a third fixing bolt rod, a fifth fish-eye mounting sleeve and a sixth fish-eye mounting sleeve, and a third fish-eye ball for the third fixing bolt rod to pass through and mating and docking with the fifth fish-eye mounting sleeve and the sixth fish-eye mounting sleeve is further disposed inside the third fish-eye ball head.

[0011] Furthermore, in the above technical solution, the lifting lower connecting rod and the lifting upper connecting rod are connected through a first pin shaft, and a first strip-shaped groove for the first pin shaft to slide is disposed on the lifting lower connecting rod.

[0012] Furthermore, in the above technical solution, the four tie rod assemblies are respectively hinged at the four corners of the snap-fastening frame.

[0013] Furthermore, in the above technical solution, the snap-fastening frame includes an upper support rod and a lower support rod for the rotary tillage mechanism to be snap-fastened, and a left connecting plate and a right connecting plate sleeved at both ends of the upper support rod and the lower support rod and used for pivotally connecting with the lifting bracket mechanism. Upper snap-fastening grooves and lower snap-fastening grooves capable of being snap-fastened to the upper support rod and the lower support rod are respectively disposed at the upper and lower ends on both sides of the rotary tillage mechanism, and the rotary tillage mechanism is locked and fixed to the left connecting plate and the right connecting plate through a bolt group or a pin.

[0014] Furthermore, in the above technical solution, the upper support rod is also provided with a left upper connecting plate and a right upper connecting plate located between the left connecting plate and the right connecting plate and used to cooperate with the installation of the pull rod assembly, and the lower support rod is also provided with a left lower connecting plate and a right lower connecting plate located between the left connecting plate and the right connecting plate and used to cooperate with the installation of the pull rod assembly, and a first hinge seat for hinged connection with the lifting lower link is also provided between the left lower connecting plate and the right lower connecting plate.

[0015] Furthermore, in the above technical solution, left and right support plates for buckling to the upper and lower support rods are provided on both sides of the rotary tillage mechanism, and the upper and lower buckling grooves are respectively located at the upper and lower ends of the left and right support plates.

[0016] Furthermore, in the above technical solution, the left support plate and the right support plate are also respectively provided with a first limit mounting hole and a second limit mounting hole for the bolt group or the pin to pass through, and the first limit mounting hole and the second limit mounting hole are both located between the upper buckle groove and the lower buckle groove; the left connecting plate and the right connecting plate are respectively provided with a third limit mounting hole and a fourth limit mounting hole for docking with the first limit mounting hole and the second limit mounting hole.

[0017] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model adopts four pull rod assemblies to support the cantilever of the buckle quick-loading frame, and the driving top rod pushes the lifting upper connecting rod to drive the lifting lower connecting rod to pull the buckle quick-loading frame to rise and fall, and the rotary tillage mechanism is hooked on the buckle quick-loading frame, thereby realizing the stable support of the rotary tillage mechanism by the lifting bracket mechanism, and when the driving top rod pushes the buckle quick-loading frame to rise, the rotary tillage mechanism will approach the tractor to shorten the swing torque of the rotary tillage mechanism, thereby reducing the excessive swing amplitude of the rotary tillage mechanism during the driving of the tractor, and avoiding the overturning of the vehicle. Secondly, the two ends of the pull rod assembly are respectively connected to the tractor and the buckle quick-loading frame through a live joint, so that a certain amplitude of yaw adjustment can be achieved between the rotary tillage mechanism and the tractor, ensuring that the rotary tillage mechanism can accurately cultivate the land. In the utility model, an upper support rod and a lower support rod are arranged on the buckle quick-install frame to realize quick buckle connection with the support connecting frame of the rotary tillage mechanism, and the support connecting frame is penetrated together with the left connecting plate and the right connecting plate by a bolt group or a latch, so that the rotary tillage mechanism and the buckle quick-install frame are locked and fixed. Description of the drawings:

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a structural diagram of the rotary tillage mechanism in the utility model;

[0020] Figure 3 It is the internal structure diagram of the transmission component in the utility model;

[0021] Figure 4 It is the structure diagram of the transmission component in the present utility model;

[0022] Figure 5 It is the structure diagram of the tractor in the present utility model;

[0023] Figure 6 It is the structure diagram of the lifting bracket mechanism in the present utility model;

[0024] Figure 7 It is the exploded view of the tie rod assembly in the present utility model;

[0025] Figure 8 It is the structure diagram of the snap - on quick - mounting frame in the present utility model;

[0026] Figure 9 It is the structure diagram of the drive module in the present utility model;

[0027] Figure 10 It is the internal structure diagram of the drive module in the present utility model;

[0028] Figure 11 It is the structure diagram of the steering servo in the present utility model. Specific embodiments:

[0029] The present utility model will be further described below in conjunction with specific embodiments and the accompanying drawings.

[0030] See Figures 5 to 8As shown in the figure, a suspension mechanism of a farming machine includes a lifting bracket mechanism 3 disposed at the rear end of a tractor 1 and used for lifting and lowering a rotary tillage mechanism 2. A snap-fastening quick-installation frame 4 for facilitating the quick disassembly and assembly of the rotary tillage mechanism 2 is provided on the lifting bracket mechanism 3. The lifting bracket mechanism 3 includes at least four tie rod assemblies 31 disposed between the snap-fastening quick-installation frame 4 and the tractor 1, a lifting lower connecting rod 32 hinged to the snap-fastening quick-installation frame 4, a lifting upper connecting rod 33 hinged to the tractor 1 and movably hinged to the lifting lower connecting rod 32, and a driving push rod 34 hinged to the tractor 1 and hinged to the lifting upper connecting rod 33 to push it to swing. Four tie rod assemblies 31 are used to cantilever support the snap-fastening quick-installation frame 4, and the driving push rod 34 is used to push the lifting upper connecting rod 33 to drive the lifting lower connecting rod 32 to pull the snap-fastening quick-installation frame 4 to rise and fall. By hanging the rotary tillage mechanism 2 on the snap-fastening quick-installation frame 4, the lifting bracket mechanism 3 can stably support the rotary tillage mechanism 2. When the driving push rod 34 pushes the snap-fastening quick-installation frame 4 to rise, the rotary tillage mechanism 2 will approach the tractor 1, so as to shorten the swing torque of the rotary tillage mechanism 2, thereby reducing the excessive swing amplitude of the rotary tillage mechanism 2 during the driving process of the tractor 1 and avoiding vehicle overturning. Secondly, both ends of the tie rod assembly 31 are respectively connected to the tractor 1 and the snap-fastening quick-installation frame 4 through ball joints, enabling a certain range of yaw adjustment between the rotary tillage mechanism 2 and the tractor 1 to ensure that the rotary tillage mechanism 2 can accurately cultivate the land.

[0031] The tie rod assembly 31 includes a support sleeve 31A, a first ball eye head 31B and a second ball eye head 31C telescopically disposed at both ends of the support sleeve 31A, a first fixing bolt rod 31H for fixing the first ball eye head 31B to the snap-fastening quick-installation frame 4, a first ball eye mounting sleeve 31D and a second ball eye mounting sleeve 31E sleeved on the first fixing bolt rod 31H and pressing against both sides of the first ball eye head 31B, a first ball eye 31I disposed inside the end of the first ball eye head 31B and used for mating and docking with the first ball eye mounting sleeve 31D and the second ball eye mounting sleeve 31E, a second fixing screw 31J for fixing the second ball eye head 31C to the tractor 1, a third ball eye mounting sleeve 31F and a fourth ball eye mounting sleeve 31G sleeved on the second fixing screw 31J and pressing against both sides of the second ball eye head 31C, and a second ball eye 31K disposed inside the end of the second ball eye head 31C and used for mating and docking with the third ball eye mounting sleeve 31F and the fourth ball eye mounting sleeve 31G.

[0032] The driving push rod 34 and the lifting upper connecting rod 33 are connected through a third ball eye head 351, a third fixing bolt rod 352, a fifth ball eye mounting sleeve 353 and a sixth ball eye mounting sleeve 354. A third ball eye for the third fixing bolt rod 352 to pass through and mate with the fifth ball eye mounting sleeve 353 and the sixth ball eye mounting sleeve 354 is further provided inside the third ball eye head 351.

[0033] The lifting lower connecting rod 32 and the lifting upper connecting rod 33 are connected by a first pin shaft 36, and a first strip-shaped groove 321 for the first pin shaft 36 to slide is provided on the lifting lower connecting rod 32.

[0034] The four pull rod assemblies 31 are respectively hinged to the four corners of the snap-fastening frame 4.

[0035] The snap-fastening frame 4 includes an upper support rod 41 and a lower support rod 42 for the rotary tillage mechanism 2 to be snap-fastened, and left and right connecting plates 43 and 44 sleeved on both ends of the upper support rod 41 and the lower support rod 42 and used for pivotally connecting with the lifting bracket mechanism 3. Upper snap-fastening grooves 211 and lower snap-fastening grooves 212 capable of being snap-fastened to the upper support rod 41 and the lower support rod 42 are respectively arranged at the upper and lower ends on both sides of the rotary tillage mechanism 2, and the rotary tillage mechanism 2 is locked and fixed to the left and right connecting plates 43 and 44 through a bolt group or a pin.

[0036] An upper left connecting plate 45 and an upper right connecting plate 46 for cooperatively installing the pull rod assembly 31 are further arranged on the upper support rod 41 between the left and right connecting plates 43 and 44. A lower left connecting plate 47 and a lower right connecting plate 48 for cooperatively installing the pull rod assembly 31 are further arranged on the lower support rod 42 between the left and right connecting plates 43 and 44. A first hinge seat 49 for hinging with the lifting lower connecting rod 32 is further arranged between the lower left connecting plate 47 and the lower right connecting plate 48.

[0037] Left and right support plates 213 and 214 for being snap-fastened to the upper support rod 41 and the lower support rod 42 are arranged on both sides of the rotary tillage mechanism 2, and the upper snap-fastening grooves 211 and the lower snap-fastening grooves 212 are respectively located at the upper and lower ends of the left and right support plates 213 and 214.

[0038] First limit mounting holes 215 and second limit mounting holes 216 for the bolt group or the pin to pass through are respectively arranged on the left and right support plates 213 and 214, and both the first limit mounting holes 215 and the second limit mounting holes 216 are located between the upper snap-fastening grooves 211 and the lower snap-fastening grooves 212. Third limit mounting holes 431 and fourth limit mounting holes 441 for docking with the first limit mounting holes 215 and the second limit mounting holes 216 are respectively arranged on the left and right connecting plates 43 and 44.

[0039] In one embodiment, see Figures 1 to 10As shown in the figure, there is an agricultural tillage machine, which includes a tractor 1, a rotary tillage mechanism 2, and a lifting bracket mechanism 3 arranged at the rear end of the tractor 1 and used for lifting the rotary tillage mechanism 2. A snap-fastening mounting frame 4 for disassembling and assembling the rotary tillage mechanism 2 is arranged on the lifting bracket mechanism 3. The rotary tillage mechanism 2 includes a support connecting frame 21 for snap-fastening on the snap-fastening mounting frame 4, a rotary knife motor 22 arranged on the support connecting frame 21, a transmission component 23 arranged in the middle of the support connecting frame 21 and connecting the rotary knife motor 22 to transmit power, and a left rotary knife 24 and a right rotary knife 25 installed on both sides of the lower end of the transmission component 23. By setting the snap-fastening mounting frame 4 between the lifting bracket mechanism 3 and the rotary tillage mechanism 2, rapid disassembly and assembly are realized, which is convenient for the replacement and maintenance of the rotary tillage mechanism 2, and can realize the rapid replacement of agricultural mechanisms with different functions, such as: lawn mowers, etc. Secondly, in the rotary tillage mechanism 2, the transmission component 23 in the middle transmits the power of the rotary knife motor 22 to the left rotary knife 24 and the right rotary knife 25 at the same time to ensure the synchronization of the left rotary knife 24 and the right rotary knife 25 and avoid the generation of internal stress leading to fracture.

[0040] The snap-fastening mounting frame 4 includes an upper support rod 41 and a lower support rod 42 for the support connecting frame 21 to snap-fasten, and left connecting plates 43 and right connecting plates 44 sleeved at both ends of the upper support rod 41 and the lower support rod 42 and used for pivotally connecting with the lifting bracket mechanism 3. Upper snap-fastening grooves 211 and lower snap-fastening grooves 212 that can be snap-fastened to the upper support rod 41 and the lower support rod 42 are respectively arranged at the upper and lower ends on both sides of the support connecting frame 21, and are locked and fixed by passing a bolt group or a pin through the support connecting frame 21 and the left connecting plates 43 and the right connecting plates 44. By setting the upper support rod 41 and the lower support rod 42 on the snap-fastening mounting frame 4, rapid snap-fastening with the support connecting frame 21 of the rotary tillage mechanism 2 is realized, and the support connecting frame 21, the left connecting plates 43 and the right connecting plates 44 are threaded together by a bolt group or a pin to realize the locking and fixing of the rotary tillage mechanism 2 and the snap-fastening mounting frame 4.

[0041] Left support plates 213 and right support plates 214 for snap-fastening to the upper support rod 41 and the lower support rod 42 are arranged on both sides of the support connecting frame 21, and the upper snap-fastening grooves 211 and the lower snap-fastening grooves 212 are respectively located at the upper and lower ends of the left support plates 213 and the right support plates 214. First limit mounting holes 215 and second limit mounting holes 216 for the bolt group or the pin to pass through are respectively arranged on the left support plates 213 and the right support plates 214, and both the first limit mounting holes 215 and the second limit mounting holes 216 are located between the upper snap-fastening grooves 211 and the lower snap-fastening grooves 212.

[0042] The transmission assembly 23 includes a drive shaft 231 for mounting a left rotary cutter 24 and a right rotary cutter 25, an output bevel gear set 232 sleeved on the drive shaft 231, a bevel gear shaft 233 vertically disposed on one side of the drive shaft 231 and located between the rotary cutter motor 22 and the output bevel gear set 232, and a housing 234 covering the bevel gear shaft 233 and the output bevel gear set 232. One end of the bevel gear shaft 233 meshes with the output bevel gear set 232, and the other end of the bevel gear shaft 233 is connected to the output shaft of the rotary cutter motor 22.

[0043] The lifting bracket mechanism 3 includes four tie rod assemblies 31 disposed between the snap - on quick - mounting frame 4 and the tractor 1, a lifting lower connecting rod 32 hingedly mounted on the snap - on quick - mounting frame 4, a lifting upper connecting rod 33 hingedly mounted on the tractor 1 and movably hinged to the lifting lower connecting rod 32, and a driving push rod 34 hingedly mounted on the tractor 1 and hinged to the lifting upper connecting rod 33 to push it to swing. The four tie rod assemblies 31 are respectively hinged at the four corners of the snap - on quick - mounting frame 4, and movable joints are provided at both ends of the tie rod assemblies 31. The four tie rod assemblies 31 connect the snap - on quick - mounting frame 4 and the tractor 4 together, and the lifting lower connecting rod 32 and the lifting upper connecting rod 33 hold the tractor 1 and the snap - on quick - mounting frame 4. By lifting or lowering the driving push rod 34, the lifting upper connecting rod 33 is lifted or lowered, so that the snap - on quick - mounting frame 4 is lifted or lowered, thereby driving the rotary tillage mechanism 2 to flip, and the rotary tillage mechanism 2 is stably supported by the four tie rod assemblies 31. After the rotary tillage mechanism 2 is lifted, the distance between the rotary tillage mechanism 2 and the tractor 4 can be shortened, and the torque during swinging can be reduced, thereby effectively avoiding vehicle overturning.

[0044] The pull rod assembly 31 includes a support sleeve 31A, a first fish-eye ball head 31B and a second fish-eye ball head 31C telescopically arranged at both ends of the support sleeve 31A, a first fixing bolt rod 31H for fixing the first fish-eye ball head 31B to the snap-fastening mounting bracket 4, a first fish-eye mounting sleeve 31D and a second fish-eye mounting sleeve 31E sleeved on the first fixing bolt rod 31H and pressing against both sides of the first fish-eye ball head 31B, a first fish-eye ball 31I arranged inside the end of the first fish-eye ball head 31B and used for mating and docking with the first fish-eye mounting sleeve 31D and the second fish-eye mounting sleeve 31E, a second fixing screw 31J for fixing the second fish-eye ball head 31C to the tractor 1, a third fish-eye mounting sleeve 31F and a fourth fish-eye mounting sleeve 31G sleeved on the second fixing screw 31J and pressing against both sides of the second fish-eye ball head 31C, and a second fish-eye ball 31K arranged inside the end of the second fish-eye ball head 31C and used for mating and docking with the third fish-eye mounting sleeve 31F and the fourth fish-eye mounting sleeve 31G. Wherein, one end of the first fish-eye ball head 31B is set as a screw part 31B1 extending into the support sleeve 31A, and a first adjusting nut 31B2 for adjusting the telescopic length of the first fish-eye ball head 31B is installed on the screw part 31B1. The other end of the first fish-eye ball head 31B is set as a sleeve part 31B3 for installing the first fish-eye ball 31I and for the first fixing bolt rod 31H to pass through. The second fish-eye ball head 31C has the same structure as the first fish-eye ball head 31B. By arranging fish-eye ball head structures at both ends of the pull rod assembly 31 for connection, through the cooperation of the fish-eye ball and the fish-eye mounting sleeve, the connection at the end of the pull rod assembly 31 can be deflected within a certain angle range, and the elongation and shortening of the pull rod assembly 31 are realized through the telescopable first fish-eye ball head 31B and the second fish-eye ball head 31C, so as to realize the position adjustment of the rotary tillage mechanism 2, so that the rotary tillage mechanism 2 can keep working in a straight line and the tillage depth at each place is kept consistent.

[0045] The driving ejector rod 34 and the lifting upper connecting rod 33 are connected by a third fish-eye ball head 351, a third fixing bolt rod 352, a fifth fish-eye mounting sleeve 353 and a sixth fish-eye mounting sleeve 354. A third fish-eye ball for the third fixing bolt rod 352 to pass through and for mating and docking with the fifth fish-eye mounting sleeve 353 and the sixth fish-eye mounting sleeve 354 is also arranged inside the third fish-eye ball head 351. The lifting lower connecting rod 32 and the lifting upper connecting rod 33 are connected by a first pin shaft 36, and a first strip-shaped groove 321 for the first pin shaft 36 to slide is arranged on the lifting lower connecting rod 32.

[0046] The tractor 1 includes a frame main body A, a left crawler wheel B and a right crawler wheel C arranged on both sides of the frame main body A, a drive module D arranged inside the frame main body A and used to drive the left crawler wheel B and the right crawler wheel C to work, and a battery unit E arranged inside the frame main body A and used to supply electric energy to the drive module D. Among them, the drive module D is located at the front end of the frame main body A, the lifting bracket mechanism 3 is hinged and installed at the rear end of the frame main body A, and the battery unit E is located in the middle of the frame main body A.

[0047] The drive module D includes a speed change gearbox D1, a steering servo D2 arranged on the speed change gearbox D1 and used to control the steering of the tractor 1, a shift servo D3 arranged on the speed change gearbox D1 and used to control the forward and backward movement of the tractor 1, a traveling motor D4 arranged on the speed change gearbox D1, and a transmission pulley group D5 arranged between the traveling motor D4 and the speed change gearbox D1.

[0048] An installation bracket D6 for supporting the traveling motor D4 and the transmission pulley group D5 is arranged on the speed change gearbox D1. The installation bracket D6 includes a support vertical plate D61 fixed on the speed change gearbox D1 and a sliding block D62 slidably arranged on the support vertical plate D61 and used to fix the traveling motor D4. One end of the support vertical plate D61 is provided with an installation groove D63 for the sliding block D62 to move, and a plurality of second strip-shaped grooves D64 for installing and adjusting the position of the sliding block D62 are arranged in the installation groove D63.

[0049] The steering servo D2 includes a servo gearbox D21, a servo rotor D22 swingably arranged at the bottom of the servo gearbox D21, a steering motor D23 arranged on the servo gearbox D21 and used to drive the servo rotor D22 to swing, and a plurality of reduction gear pairs D24 arranged inside the servo gearbox D21 and used to transmit power between the steering motor D23 and the servo rotor D22.

[0050] The speed change gearbox D1 includes a box body D11, an input main shaft D12, a left output shaft D13, a right output shaft D14, a speed change main shaft D15 and a clutch main shaft D16. Among them, a speed change gear set D17 for transmitting power is arranged on the input main shaft D12 and the speed change main shaft D15, a clutch gear set D18 for transmitting power is arranged on the clutch main shaft D16 and the left output shaft D13 and the right output shaft D14, and left and right clutch modules D19 and D100 capable of contacting and pressing against the servo rotor D22 are respectively arranged at both ends of the clutch main shaft D16.

[0051] In summary, when the utility model works, the rotary tillage mechanism 2 is driven by the tractor 1 to move. When tilling the land is required, the rotary tillage mechanism 2 is lowered through the lifting bracket mechanism 3, so that the left rotary cutter group 24 and the right rotary cutter group 25 of the rotary tillage mechanism 2 are inserted into the soil. Driven by the rotary cutter motor 22, the left rotary cutter group 24 and the right rotary cutter group 25 start to work, and at the same time, the tractor 1 pulls the rotary tillage mechanism 2 forward, thus realizing tilling the land. Further, when it is necessary to replace the agricultural mechanism, for example, a weeding machine, it is necessary to first lift the rotary tillage mechanism 2 through the lifting bracket mechanism 3, loosen the bolts or pins between the rotary tillage mechanism 2 and the snap-fastening mounting frame 4, and then manually or with the help of a crane lift the rotary tillage mechanism 2 upward and remove it from the snap-fastening mounting frame 4. Of course, in order to facilitate the removal of the rotary tillage mechanism 2, the rotary tillage mechanism 2 can also be pulled out of the soil and placed on the ground. After removing the locking bolts or pins, it swings downward through the lifting bracket mechanism 3 and disengages from the rotary tillage mechanism 2. Finally, the weeding machine is installed on the snap-fastening mounting frame 4 to complete the replacement of the agricultural mechanism.

[0052] Certainly, the above are only specific embodiments of the utility model, and are not intended to limit the scope of implementation of the utility model. Any equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the utility model shall be included in the scope of the patent application of the utility model.

Claims

1. A suspension mechanism for a farming machine, comprising a lifting bracket mechanism (3) provided at the rear end of a tractor (1) and used for lifting a rotary tillage mechanism (2), characterized in that: A snap-fastening frame (4) for facilitating the quick disassembly and assembly of the rotary tillage mechanism (2) is provided on the lifting bracket mechanism (3); The lifting bracket mechanism (3) includes at least four tie rod assemblies (31) provided between the snap-fastening frame (4) and the tractor (1), a lifting lower connecting rod (32) hinged to the snap-fastening frame (4), a lifting upper connecting rod (33) hinged to the tractor (1) and movably hinged to the lifting lower connecting rod (32), and a driving push rod (34) hinged to the tractor (1) and hinged to the lifting upper connecting rod (33) to push it to swing.

2. The suspension mechanism of a farming machine according to claim 1, characterized in that: The tie rod assembly (31) includes a support sleeve (31A), a first fish-eye ball head (31B) and a second fish-eye ball head (31C) telescopically provided at both ends of the support sleeve (31A), a first fixing bolt rod (31H) for fixing the first fish-eye ball head (31B) to the snap-fastening frame (4), a first fish-eye mounting sleeve (31D) and a second fish-eye mounting sleeve (31E) sleeved on the first fixing bolt rod (31H) and pressing against both sides of the first fish-eye ball head (31B), a first fish-eye ball (31I) provided inside the end of the first fish-eye ball head (31B) and used for mating and docking with the first fish-eye mounting sleeve (31D) and the second fish-eye mounting sleeve (31E), a second fixing screw (31J) for fixing the second fish-eye ball head (31C) to the tractor (1), a third fish-eye mounting sleeve (31F) and a fourth fish-eye mounting sleeve (31G) sleeved on the second fixing screw (31J) and pressing against both sides of the second fish-eye ball head (31C), and a second fish-eye ball (31K) provided inside the end of the second fish-eye ball head (31C) and used for mating and docking with the third fish-eye mounting sleeve (31F) and the fourth fish-eye mounting sleeve (31G).

3. The suspension mechanism of a farming machine according to claim 1, characterized in that: The driving push rod (34) and the lifting upper connecting rod (33) are connected by a third fish-eye ball head (351), a third fixing bolt rod (352), a fifth fish-eye mounting sleeve (353) and a sixth fish-eye mounting sleeve (354), and a third fish-eye ball for allowing the third fixing bolt rod (352) to pass through and mating and docking with the fifth fish-eye mounting sleeve (353) and the sixth fish-eye mounting sleeve (354) is further provided inside the third fish-eye ball head (351).

4. The suspension mechanism of a farming machine according to claim 1, characterized in that: The lifting lower connecting rod (32) and the lifting upper connecting rod (33) are connected by a first pin shaft (36), and a first strip-shaped groove (321) for allowing the first pin shaft (36) to slide is provided on the lifting lower connecting rod (32).

5. The suspension mechanism of a farming machine according to claim 1, characterized in that: The four tie rod assemblies (31) are respectively hinged to the four corners of the snap-fastening frame (4).

6. The suspension mechanism of a farming machine according to any one of claims 1-5, characterized in that: The snap-fastening and quick-installation frame (4) includes an upper support rod (41) and a lower support rod (42) for the rotary tillage mechanism (2) to be snap-fastened to, and left and right connecting plates (43) and (44) sleeved at both ends of the upper support rod (41) and the lower support rod (42) and used for pivotally connecting with the lifting bracket mechanism (3). Upper snap-fastening grooves (211) and lower snap-fastening grooves (212) capable of being snap-fastened to the upper support rod (41) and the lower support rod (42) are respectively arranged at the upper and lower ends on both sides of the rotary tillage mechanism (2), and the rotary tillage mechanism (2) is locked and fixed to the left and right connecting plates (43) and (44) by a bolt group or a pin.

7. The suspension mechanism of a farming machine according to claim 6, characterized in that: On the upper support rod (41), there are also arranged a left upper connecting plate (45) and a right upper connecting plate (46) located between the left and right connecting plates (43) and (44) and used for cooperatively installing the pull rod assembly (31). On the lower support rod (42), there are also arranged a left lower connecting plate (47) and a right lower connecting plate (48) located between the left and right connecting plates (43) and (44) and used for cooperatively installing the pull rod assembly (31). And between the left lower connecting plate (47) and the right lower connecting plate (48), there is also arranged a first hinge seat (49) used for hinging with the lifting lower connecting rod (32).

8. The suspension mechanism of a farming machine according to claim 6, characterized in that: On both sides of the rotary tillage mechanism (2), there are arranged a left support plate (213) and a right support plate (214) for being snap-fastened to the upper support rod (41) and the lower support rod (42), and the upper snap-fastening groove (211) and the lower snap-fastening groove (212) are respectively located at the upper and lower ends of the left support plate (213) and the right support plate (214).

9. The suspension mechanism of a farming machine according to claim 8, characterized in that: On the left support plate (213) and the right support plate (214), there are also respectively arranged a first limit installation hole (215) and a second limit installation hole (216) for the bolt group or the pin to pass through, and both the first limit installation hole (215) and the second limit installation hole (216) are located between the upper snap-fastening groove (211) and the lower snap-fastening groove (212). On the left connecting plate (43) and the right connecting plate (44), there are respectively arranged a third limit installation hole (431) and a fourth limit installation hole (441) for docking with the first limit installation hole (215) and the second limit installation hole (216).

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