Paddy planter

Abstract

The utility model discloses a rice direct seeding machine, which relates to the technical field of agricultural machinery and comprises a machine head, a parallel four-bar hitching device, a complete machine hitching device, a seed metering device, a machine frame, standing trundles, a seeding rate integral adjusting mechanism, a soil touching component, a transmission system and an elevation profiling device, the top end of the machine frame is connected with the complete machine hanging device, the bottom end of the machine frame is connected with a soil touching component, the seed sowing devices are fixed to the machine frame at intervals, one end of the elevation profiling device is rotatably connected with the soil touching component, the other end of the elevation profiling device is connected with a hydraulic cylinder of the machine head, and the transmission system is arranged on the machine frame. The transmission system is in transmission connection with the seed-metering devices, the seeding rate overall adjusting mechanism is connected with the plurality of seed-metering devices, and the standing trundles are fixedly connected to the soil touching part. According to the utility model, a plurality of seed-metering devices can be synchronously adjusted, the seeding rate adjustment consistency is good, and the device can adapt to the landform of small fields in hills and mountains.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and more specifically to a rice direct seeding machine. Background Art

[0002] Compared with manual sowing, direct seeding technology for rice has higher operating efficiency, lower cost and reduced labor intensity. At the same time, the rice direct seeding machine can also achieve precise hole sowing, ensure the consistent planting depth of rice, ensure the row spacing and plant spacing of seeds, and can also adjust the sowing amount of rice seeds according to different varieties of rice seeds; existing rice hole direct seeding machines mostly use single-body sowing amount adjustment, which has problems such as poor consistency of sowing amount adjustment and inconvenient adjustment method, and are equipped with a sowing amount overall adjustment mechanism.

[0003] However, since there are relatively few rice direct seeding machines for small plots in hilly and mountainous areas, there is an urgent need for a rice direct seeding machine that can adapt to various small plots, promote the rapid development of precision rice direct seeding machines in hilly and mountainous areas, improve the labor productivity of rice planting in hilly and mountainous areas, reduce the labor intensity of rice production, reduce costs and increase efficiency, and improve the comprehensive rice production capacity. Utility Model Content

[0004] In view of this, the utility model provides a rice direct seeding machine, which aims to solve one of the problems in the above-mentioned background technology, improve the labor productivity of rice planting in hilly and mountainous areas, and reduce the labor intensity of rice production.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a rice direct seeding machine, comprising: a machine head, a parallel four-bar hanging device, a whole machine hanging device, a seeding device, a frame, a standing caster, a sowing amount overall adjustment mechanism, a soil contact component, a transmission system and an elevation profiling device, wherein the parallel four-bar hanging device is connected to the rear of the machine head, the whole machine hanging device is connected to the parallel four-bar hanging device, the top end of the frame is connected to the whole machine hanging device, the bottom end of the frame is connected to the soil contact component, a plurality of seeding devices are provided, and the plurality of seeding devices are fixed at intervals On the frame, one end of the elevation profiling device is rotatably connected to the soil-contacting component, and the other end of the elevation profiling device is connected to the hydraulic cylinder of the machine head. The driving of the hydraulic cylinder can drive the elevation profiling device to rotate at the connection between the elevation profiling device and the soil-contacting component. The transmission system is arranged on the frame, and the transmission system is connected to the seed metering device. The overall sowing amount adjustment mechanism is connected to multiple seed metering devices, and the overall sowing amount adjustment mechanism is used to adjust the sowing amount of the seed metering device.

[0007] Among them, the soil-contacting parts include a soil-contacting bottom plate, soil-contacting side plates, a ditch opener and a seed ditch opener. The soil-contacting side plates are arranged on both sides of the soil-contacting bottom plate, a plurality of ditch openers are arranged at intervals at the bottom of the soil-contacting bottom plate, and the seed ditch openers are arranged between adjacent ditch openers. The standing casters are fixedly connected to the soil-contacting bottom plate.

[0008] According to the rice direct seeding machine provided by the utility model, the parallel four-bar hanging device includes:

[0009] A parallel four-bar mechanism, one end of which is hinged to the machine head;

[0010] A parallelogram-bar connecting plate, hinged to an end of the parallelogram-bar mechanism away from the machine head;

[0011] A load-bearing bent plate, fixedly connected to one end of the parallel four-bar hanging plate away from the parallel four-bar mechanism, the load-bearing bent plate having an arc-shaped slot for clamping the whole machine hanging device;

[0012] A parallelogram-bar hanging locking plate is fixedly connected to one end of the parallelogram-bar hanging plate away from the parallelogram-bar mechanism. The parallelogram-bar hanging locking plate is located below the load-bearing bending plate. The parallelogram-bar hanging locking plate is used to be fixedly connected to the whole machine hanging device.

[0013] According to the rice direct seeding machine provided by the utility model, the parallel four-bar mounting plate includes:

[0014] A parallelogram-mounted inner plate and a parallelogram-mounted outer plate are arranged at intervals from each other, the parallelogram-mounted inner plate and the parallelogram-mounted outer plate are respectively hinged to the ends of the connecting rods on the corresponding sides of the parallelogram-mounted mechanism, and the load-bearing bending plate and the parallelogram-mounted locking plate are both connected to the ends of the parallelogram-mounted inner plate and the parallelogram-mounted outer plate away from the parallelogram-mounted mechanism;

[0015] A parallelogram-mounted main plate, used to connect the parallelogram-mounted inner plate and the parallelogram-mounted outer plate at one end away from the parallelogram-mounted mechanism;

[0016] The parallelogram-bar suspension support plate is connected between the parallelogram-bar suspension inner plate and the parallelogram-bar suspension outer plate, and is used for supporting the parallelogram-bar suspension inner plate and the parallelogram-bar suspension outer plate.

[0017] According to the rice direct seeding machine provided by the utility model, the whole machine hanging device includes:

[0018] Machine mounting plate;

[0019] An upper hook rod is fixedly connected to one side of the whole machine mounting plate, and the upper hook rod is used to be clamped in the arc-shaped clamping groove of the load-bearing bending plate;

[0020] A whole machine hooking locking plate, fixedly connected to a side of the whole machine hooking plate connected to the upper hook rod, the whole machine hooking locking plate is located below the upper hook rod, and the whole machine hooking locking plate is used to connect with the parallelogram hooking locking plate;

[0021] The load-bearing shaft has one end connected to the whole machine mounting plate, and the other end connected to the top of the frame through a bearing seat structure.

[0022] According to the rice direct seeding machine provided by the utility model, the whole machine mounting plate includes:

[0023] A whole machine hanging side plate, wherein two whole machine hanging side plates are provided, the two whole machine hanging side plates are arranged at intervals, and the upper hook rod is arranged between the two whole machine hanging side plates;

[0024] A whole machine mounting main board, used to connect two whole machine mounting side panels away from one end of the upper hook rod;

[0025] A whole machine mounting reinforcement plate is located below the whole machine mounting main board, and two ends of the whole machine mounting reinforcement plate are respectively connected to one end of the two whole machine mounting side plates away from the whole machine mounting locking plate;

[0026] A front reinforcement plate for whole machine mounting is arranged below the whole machine mounting locking plate, two ends of the front reinforcement plate for whole machine mounting are respectively connected to the whole machine mounting side plates located on both sides below the whole machine mounting locking plate, and one end of the load-bearing shaft is connected to the front reinforcement plate for whole machine mounting;

[0027] The whole machine hanging upper cover plate is used to connect the tops of the two whole machine hanging side plates.

[0028] According to the rice direct seeding machine provided by the utility model, the frame includes:

[0029] A crossbeam, the bearing seat being arranged on the top of the crossbeam;

[0030] There are two support seats, which are symmetrically arranged at both ends of the beam;

[0031] An upper support tube, both ends of which are respectively connected to the two support seats, and the upper support tube is provided with mounting holes corresponding to the number of the plurality of seeding devices at intervals;

[0032] A lower support tube is arranged below the upper support tube, and both ends of the lower support tube are respectively connected to the two support seats, and the upper support tube and the lower support tube are used to fix the seed metering device;

[0033] There are two limit support springs, which are symmetrically and obliquely arranged at the two ends of the top of the beam, one end of the limit support spring is connected to the top of the beam, and the other end is connected to the whole machine hanging side plate on the corresponding side.

[0034] According to the rice direct seeding machine provided by the utility model, the seed metering device includes:

[0035] The adjusting mechanism comprises a shell and a seeding wheel, one end of the shell is connected to the upper support tube, the other end of the shell is against the lower support tube, the seeding wheel is rotatably arranged in the shell, and the seeding wheel has a circumferential hole;

[0036] A seed box, arranged at the top of the adjusting mechanism, the seed box being in communication with the interior of the adjusting mechanism;

[0037] A depth adjustment spindle is axially movable and penetrates the interior of the adjustment mechanism, and the depth of the mold hole can be adjusted by moving the depth adjustment spindle;

[0038] A power input gear shaft is passed through the adjusting mechanism, a power input gear is arranged on the power input gear shaft, the power input gear is transmission-connected to the transmission system, and the power input gear shaft is transmission-connected to the seeding wheel.

[0039] The rice direct seeding machine provided by the utility model further comprises a connecting square tube, through which the depth adjustment main shafts and the power input gear shafts corresponding to adjacent seeding devices are connected.

[0040] The rice direct seeding machine provided by the utility model further includes a rotating handle, and the rotating handle includes:

[0041] A rotating handle support plate is connected to the support seat;

[0042] A fixed spur internal gear fixedly connected to the rotating handle support plate;

[0043] A handle, one end of which passes through the rotating handle support plate inside the fixed spur internal gear and is connected to the end of the depth adjustment spindle;

[0044] A fixed spur gear is fixed to the handle through a bearing. When one end of the handle close to the depth adjustment spindle is connected to the depth adjustment spindle, the fixed spur gear meshes with the fixed spur internal gear. The handle can drive the depth adjustment spindle to rotate, thereby driving the axial movement of the depth adjustment spindle.

[0045] According to the rice direct seeding machine provided by the utility model, the elevation profiling device comprises:

[0046] A contoured pontoon, the end of which is hinged to the soil contacting component, and a pontoon front mounting frame is provided at the top of the contoured pontoon;

[0047] A pontoon rear connection frame is arranged above the contoured pontoon, and the pontoon rear connection frame is connected to the crossbeam through a contoured support steel plate;

[0048] The middle part of the pontoon middle connecting frame is rotatably connected to the pontoon rear connecting frame, one end of the pontoon middle connecting frame is connected to the pontoon front mounting frame through the pontoon front connecting frame, and the two ends of the pontoon front connecting frame are respectively hinged to the pontoon front mounting frame and the pontoon middle connecting frame, and the other end of the pontoon middle connecting frame is connected to the hydraulic cylinder of the machine head through a hydraulic pull line.

[0049] Through the above technical solutions, it can be known that compared with the prior art, the utility model discloses a rice direct seeding machine. The overall sowing amount adjustment mechanism of the utility model can synchronously adjust multiple seeding devices, and the sowing amount adjustment has good consistency and convenient adjustment method; the elevation profiling device can adapt to paddy fields with large surface height differences, and can effectively reduce the mud at the front end of the soil-contacting bottom plate, and reduce the resistance to the advancement of the machine; the rice direct seeding machine of the utility model is light, simplified and miniaturized, and can adapt to the terrain of small plots in hilly and mountainous areas; the soil-entering angle of the soil-contacting bottom plate can adapt to different paddy fields, and the curvature of the front end of the soil-contacting bottom plate has a stronger stubble pressing ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0051] Figure 1 A schematic diagram of the structure of the rice direct seeding machine provided by the utility model;

[0052] Figure 2 A schematic diagram of the structure of the frame provided by the utility model;

[0053] Figure 3 A schematic diagram of the structure of the whole machine hooking device provided by the utility model;

[0054] Figure 4 A schematic diagram of the connection structure between the whole machine hooking device and the bearing seat structure provided by the utility model;

[0055] Figure 5 A schematic diagram of the structure of the support base provided by the utility model;

[0056] Figure 6 A schematic diagram of the structure of the parallel four-bar hitch provided by the utility model;

[0057] Figure 7 A schematic diagram of the structure of the overall sowing amount adjustment mechanism provided by the utility model;

[0058] Figure 8 A schematic diagram of the structure of the rotating handle provided by the utility model;

[0059] Fig. 9 A schematic diagram of the structure of the soil contact component provided by the utility model;

[0060] Fig.10 The utility model is a schematic structural diagram of the elevation profiling device provided by the utility model.

[0061] In the figure: 1 is the machine head; 2 is the parallel four-bar hanging device; 3 is the whole machine hanging device; 4 is the seeding device; 5 is the frame; 6 is the standing caster; 7 is the overall sowing amount adjustment mechanism; 8 is the soil contact component; 9 is the elevation profiling device; 10 is the open-body flower basket screw; 11 is the limit support spring; 12 is the crossbeam; 13 is the support seat; 14 is the bevel gear transmission; 15 is the lower support tube; 16 is the upper support tube; 17 is the hexagonal slotted nut; 18 is the bearing seat structure; 19 is the whole machine hanging upper cover plate; 20 is the upper hook rod; 21 is the whole machine hanging Locking plate; 22 is the front reinforcement plate for the whole machine mounting; 23 is the bearing shaft pin; 24 is the bearing shaft; 25 is the side plate for the whole machine mounting; 26 is the main board for the whole machine mounting; 27 is the reinforcement plate for the whole machine mounting; 28 is a tapered roller bearing; 29 is a bearing seat; 30 is a retaining ring; 31 is a support seat connecting plate; 32 is a support seat round tube; 33 is a support seat inclined cover plate; 34 is a support seat side plate; 35 is a support seat reinforcement plate; 36 is a flange travel bearing; 37 is a rotating handle support plate; 38 is a plate rib; 39 is a support seat upper cover plate; 40 is a parallel Four-bar hanging inner plate; 41 is parallel four-bar hanging main plate; 42 is load-bearing bending plate; 43 is parallel four-bar hanging outer plate; 44 is parallel four-bar hanging locking plate; 45 is parallel four-bar hanging support plate; 46 is seed box; 47 is depth adjustment spindle; 48 is seed wheel adjustment support end cover; 49 is power input gear; 50 is connecting square tube; 51 is power input gear shaft; 52 is rotating handle; 53 is fixed spur gear; 54 is fixed nut; 55 is handle cover; 56 is handle; 57 is fixed spur gear; 58 The bottom plate that touches the soil; 59 is the rib plate; 60 is the side fender; 61 is the side plate that touches the soil; 62 is the ditch opener; 63 is the seed ditch opener; 64 is the angle iron of the bottom plate that touches the soil; 65 is the standing foot; 66 is the elevation profiling wire installation plate; 67 is the rear connecting frame of the pontoon; 68 is the middle connecting frame of the pontoon; 69 is the front connecting frame of the pontoon; 70 is the front mounting frame of the pontoon; 71 is the profiling pontoon; 72 is the hydraulic pull wire; 73 is the profiling support steel plate; 74 is the pontoon hinged fixing plate; 75 is the pontoon hinged plate; 76 is the hinge; 77 is the pontoon connecting round pipe. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0063] See also Figure 1-10The utility model discloses a rice direct seeding machine, comprising: a machine head 1, a parallel four-bar hanging device 2, a whole machine hanging device 3, a seeding device 4, a frame 5, a standing caster 6, a sowing amount overall adjustment mechanism 7, a soil contact component 8, a transmission system and an elevation profiling device 9, the parallel four-bar hanging device 2 is connected to the rear of the machine head 1, the parallel four-bar hanging device 2 is connected to the whole machine hanging device 3, the top end of the frame 5 is connected to the whole machine hanging device 3, the bottom end of the frame 5 is connected to the soil contact component 8, and the seeding device 4 is provided with a plurality of seeding devices 4, and the plurality of seeding devices 4 are spaced apart. Fixed on the frame 5, one end of the elevation profiling device 9 is rotatably connected to the soil-contacting component 8, and the other end of the elevation profiling device 9 is connected to the hydraulic cylinder of the machine head 1. The driving of the hydraulic cylinder can drive the elevation profiling device 9 to rotate at the connection between the elevation profiling device 9 and the soil-contacting component 8. The transmission system is arranged on the frame 5, and the transmission system is connected to the seeding device 4. The overall sowing amount adjustment mechanism 7 is connected to multiple seeding devices 4, and the overall sowing amount adjustment mechanism 7 is used to adjust the sowing amount of the seeding device 4. The standing caster 6 is fixedly connected below the soil-contacting component 8.

[0064] The soil contact component 8 includes a soil contact bottom plate 58, a soil contact side plate 61, a ditch opener 62 and a seed ditch opener 63. The soil contact side plates 61 are arranged on both sides of the soil contact bottom plate 58. A plurality of ditch openers 62 are arranged at intervals at the bottom of the soil contact bottom plate 58. A seed ditch opener 63 is arranged between adjacent ditch openers 62. The casters 6 are fixedly connected to the soil contact bottom plate 58.

[0065] It should be noted that, in the present embodiment, preferably, four seed-metering devices 4 are provided, and the four seed-metering devices 4 are evenly distributed on the frame 5. The four seed-metering devices 4 can form a small rice direct seeding machine, so that the rice direct seeding machine of the utility model is light, simplified, and miniaturized, and can adapt to the terrain of small plots in hilly and mountainous areas; the four seed-metering devices 4 are all connected to the overall sowing amount adjustment mechanism 7, and the four seed-metering devices 4 can be synchronously adjusted through the overall sowing amount adjustment mechanism 7, so that the sowing amount adjustment consistency is good and the adjustment method is convenient; the elevation profiling device 9 can adapt to paddy fields with a large height difference on the paddy field surface, and can effectively reduce the mud at the front end of the soil-contacting bottom plate 58, and reduce the resistance to the advancement of the machine; the soil-entering angle of the soil-contacting bottom plate 58 can adapt to different paddy fields, and the curvature of the front end of the soil-contacting bottom plate 58 has a stronger stubble pressing ability.

[0066] In this embodiment, the parallelogram hook device 2 includes: a parallelogram mechanism, a parallelogram hook plate, a load-bearing bent plate 42 and a parallelogram hook locking plate 44 .

[0067] One end of the parallel four-bar mechanism is hinged to the machine head 1 .

[0068] The parallelogram connecting plate is hinged to one end of the parallelogram mechanism away from the machine head 1 .

[0069] The load-bearing bent plate 42 is fixedly connected to one end of the parallelogram-bar hanging plate away from the parallelogram-bar mechanism, and the load-bearing bent plate 42 has an arc-shaped groove for clamping the whole machine hanging device 3 .

[0070] The parallelogram-bar hooking locking plate 44 is fixedly connected to one end of the parallelogram-bar hooking plate away from the parallelogram-bar mechanism, and the parallelogram-bar hooking locking plate 44 is located below the load-bearing bent plate 42. The parallelogram-bar hooking locking plate 44 is used to be fixedly connected to the whole machine hooking device 3. The parallelogram-bar hooking locking plate 44 has bolt holes for installing the whole machine hooking device 3.

[0071] In this embodiment, the parallelogram mounting plate includes: a parallelogram mounting inner plate 40 and a parallelogram mounting outer plate 43 which are spaced apart from each other, a parallelogram mounting main plate 41 , and a parallelogram mounting support plate 45 .

[0072] The parallel four-bar hanging inner plate 40 and the parallel four-bar hanging outer plate 43 are respectively hinged to the ends of the connecting rods on the corresponding sides of the parallel four-bar mechanism, and the load-bearing bent plate 42 and the parallel four-bar hanging locking plate 44 are both connected to the ends of the parallel four-bar hanging inner plate 40 and the parallel four-bar hanging outer plate 43 away from the parallel four-bar mechanism. In other words, the load-bearing bent plate 42 and the parallel four-bar hanging locking plate 44 are jointly borne by the parallel four-bar hanging inner plate 40 and the parallel four-bar hanging outer plate 43.

[0073] The parallelogram mounting main board 41 is used to connect the parallelogram mounting inner side plate 40 and the parallelogram mounting outer side plate 43 away from the end of the parallelogram mounting mechanism. The parallelogram mounting main board 41 is used to ensure the strength of the parallelogram mounting inner side plate 40 and the parallelogram mounting outer side plate 43 away from the end of the parallelogram mounting mechanism.

[0074] The parallelogram support plate 45 is connected between the parallelogram inner plate 40 and the parallelogram outer plate 43, and is used to support the parallelogram inner plate 40 and the parallelogram outer plate 43. The parallelogram support plate 45 can improve the strength between the parallelogram inner plate 40 and the parallelogram outer plate 43.

[0075] In this embodiment, the whole machine mounting device 3 includes: a whole machine mounting plate, an upper hook rod 20 , a whole machine mounting locking plate 21 and a load-bearing shaft 24 .

[0076] The upper hook rod 20 is fixedly connected to one side of the whole machine mounting plate, and the upper hook rod 20 is used to be clamped in the arc-shaped clamping groove of the load-bearing bent plate 42.

[0077] The whole machine hooking locking plate 21 is fixedly connected to the side of the whole machine hooking plate connected to the upper hook rod 20, and the whole machine hooking locking plate 21 is located below the upper hook rod 20. The whole machine hooking locking plate 21 is used to connect with the parallelogram hooking locking plate 44. In other words, the whole machine hooking device 3 and the parallelogram hooking device 2 are not only connected by the arc-shaped slot of the upper hook rod 20 and the load-bearing bent plate 42, but also connected by bolts through the whole machine hooking locking plate 21 and the parallelogram hooking locking plate 44, so as to achieve a fixed connection between the two.

[0078] One end of the load-bearing shaft 24 is connected to the whole machine mounting plate, and the other end of the load-bearing shaft 24 is connected to the top end of the frame 5 through the bearing seat structure 18.

[0079] In this embodiment, the bearing seat structure 18 includes a bearing seat 29, two tapered roller bearings 28, a retaining ring 30 and a hexagonal slotted nut 17. Two tapered roller bearings 28 are arranged in the bearing seat 29. A shoulder is arranged near the end position at the end of the load-bearing shaft 24 away from the whole machine mounting plate. The end of the load-bearing shaft 24 away from the whole machine mounting plate extends out of the bearing seat 29 from the two tapered roller bearings 28, and the shoulder rests on the tapered roller bearings 28 near the end of the whole machine mounting plate. A retaining ring 30 and a hexagonal slotted nut 17 are sequentially sleeved on the portion of the load-bearing shaft 24 extending out of the bearing seat 29. Since a pin hole is arranged at the end of the load-bearing shaft 24 away from the whole machine mounting plate, after the hexagonal slotted nut 17 is installed, an open pin is inserted into the pin hole to achieve axial restriction of the load-bearing shaft 24. A bolt hole is arranged at the bottom of the bearing seat 29, and the bolt hole is used to install the bearing seat 29 on the frame 5.

[0080] In this embodiment, the whole machine mounting plate includes: a whole machine mounting side plate 25 , a whole machine mounting main plate 26 , a whole machine mounting reinforcement plate 27 , a whole machine mounting front reinforcement plate 22 and a whole machine mounting upper cover plate 19 .

[0081] There are two whole machine hanging side plates 25, the two whole machine hanging side plates 25 are arranged at intervals, and the upper hook rod 20 is arranged between the two whole machine hanging side plates 25. The whole machine hanging locking plate 21 is connected to the two whole machine hanging side plates 25, and the whole machine hanging locking plate 21 and the upper hook rod 20 are located on the same side of the whole machine hanging side plates 25, and the whole machine hanging locking plate 21 is located below the upper hook rod 20.

[0082] The whole machine mounting main board 26 is used to connect the two whole machine mounting side plates 25 away from one end of the upper hook rod 20. The connection of the whole machine mounting main board 26 can improve the strength of the two whole machine mounting side plates 25 ends.

[0083] The whole machine mounting reinforcement plate 27 is located below the whole machine mounting main board 26, and both ends of the whole machine mounting reinforcement plate 27 are respectively connected to one end of the two whole machine mounting side plates 25 away from the whole machine mounting locking plate 21, and one end of the bearing shaft 24 is connected to the whole machine mounting reinforcement plate 27. Specifically, the bearing shaft 24 is connected to the whole machine mounting reinforcement plate 27 through the bearing shaft pin 23.

[0084] The whole machine mounting front reinforcing plate 22 is arranged below the whole machine mounting locking plate 21 , and both ends of the whole machine mounting front reinforcing plate 22 are respectively connected to the whole machine mounting side plates 25 located on both sides below the whole machine mounting locking plate 21 .

[0085] The whole machine hanging upper cover plate 19 is used to connect the tops of the two whole machine hanging side plates 25 .

[0086] In this embodiment, the frame 5 includes: a crossbeam 12 , a support seat 13 , an upper support tube 16 , a lower support tube 15 and a limit support spring 11 .

[0087] The bearing seat 29 is arranged on the top of the cross beam 12 .

[0088] Two support seats 13 are provided, and the two support seats 13 are symmetrically arranged at two ends of the crossbeam 12 .

[0089] Both ends of the upper support tube 16 are connected to the two support seats 13 respectively, and mounting holes corresponding to the number of the plurality of seed metering devices 4 are arranged at intervals on the upper support tube 16 .

[0090] The lower support tube 15 is disposed below the upper support tube 16 . Both ends of the lower support tube 15 are respectively connected to the two support seats 13 . The upper support tube 16 and the lower support tube 15 are used to fix the seed metering device 4 .

[0091] There are two limit support springs 11, which are symmetrically and obliquely arranged at the two ends of the top of the beam 12, one end of the limit support spring 11 is connected to the top of the beam 12, and the other end is connected to the corresponding side of the whole machine hanging side plate 25.

[0092] It should be noted that lifting rings are provided on both of the two whole machine hanging side plates 25, and lifting rings are also installed at the top of the cross beam 12 near its two ends. The lifting rings at the ends of the cross beam 12 are connected to the lifting rings on the corresponding side whole machine hanging side plates 25 through limit support springs 11. Preferably, an open-body basket screw 10 is also provided between the limit support spring 11 and the whole machine hanging side plates 25. The open-body basket screw 10 is adjusted to maintain the horizontal state of the cross beam 12. When the rice direct seeding machine is operating in the field, it tilts due to the uneven surface of the paddy field. The whole machine hanging device 3 swings left and right, thereby changing the range of the limit support spring 11 and generating tension on the cross beam 12. Since the soil-contacting bottom plate 58 and the mud surface generate interaction force, the cross beam 12 maintains a torque balance, so that the soil-contacting bottom plate 58 can operate close to the paddy field surface, ensuring the consistency of the trenching depth of the ditch opener 62 and the seed ditch opener 63.

[0093] Specifically, in the above embodiment, the support seat 13 includes a support seat side plate 34, a support seat inclined cover plate 33, a support seat reinforcement plate 35, a support seat circular tube 32, a support seat connecting plate 31 and a support seat upper cover plate 39, wherein two support seat side plates 34 are provided, the two support seat side plates 34 are arranged opposite to each other, and the support seat side plates 34 are of a triangular structure, the support seat inclined cover plate 33 is arranged at the front end of the two support seat side plates 34, and is used to connect the two support seat side plates 34, the support seat reinforcement plate 35 is arranged below the support seat inclined cover plate 33, the support seat connecting plate 31 is arranged at the rear end of the two support seat side plates 34, and the two ends of the support seat connecting plate 31 extend out of the two support seat side plates 34, Bolt holes are provided on the support seat connecting plate 31, and the support seat connecting plate 31 is used to connect with the cross beam 12. The support seat upper cover plate 39 is arranged on the top of the two support seat side plates 34. There are two support seat circular tubes 32, and the two support seat circular tubes 32 are both arranged through the two support seat side plates 34. The support seat circular tubes 32 are used to respectively penetrate the upper support tube 16 and the lower support tube 15. Pin holes are provided on the support seat circular tube 32, and pin holes are also provided on the upper support tube 16 and the lower support tube 15. When the upper support tube 16 and the lower support tube 15 are penetrated in the support seat circular tube 32, a cotter pin is inserted in the pin hole to realize the axial fixing effect on the upper support tube 16 and the lower support tube 15.

[0094] In this embodiment, the seed metering device 4 includes: an adjustment mechanism, a seed box 46 , a depth adjustment spindle 47 and a power input gear shaft 51 .

[0095] The adjusting mechanism includes a shell and a seeding wheel, one end of the shell is connected to the upper support tube 16, and the other end of the shell is against the lower support tube 15. The seeding wheel is rotatably arranged in the shell, and has a circular hole on the seeding wheel. In this embodiment, the specific structure and working principle of the adjusting mechanism can be referred to a diameter and depth adjustable hole type rice seeding device disclosed in the prior art application publication number CN114503812A.

[0096] The seed box 46 is disposed at the top end of the adjusting mechanism, and the seed box 46 is communicated with the interior of the adjusting mechanism.

[0097] The depth adjustment spindle 47 is axially movable and penetrates the inside of the adjustment mechanism, and the depth of the mold hole is adjusted by the movement of the depth adjustment spindle 47. The size of the sowing amount is adjusted by adjusting the depth of the mold hole.

[0098] The power input gear shaft 51 is passed through the adjustment mechanism, and the power input gear shaft 51 is provided with a power input gear 49, which is connected to the transmission system, and the power input gear shaft 51 is connected to the sowing wheel. A bevel gear gearbox 14 is provided on the crossbeam 12, and the output shaft of the bevel gear gearbox 14 is connected to the power input gear 49.

[0099] It should be noted that a seed wheel adjustment support end cover 48 is provided on one side of the shell, and a threaded hole is provided on the seed wheel adjustment support end cover 48. One end of the depth adjustment main shaft 47 is provided with a threaded section adapted to the threaded hole on the seed wheel adjustment support end cover 48. The axial movement of the depth adjustment main shaft 47 can be achieved through the screwing length of the threaded section of the depth adjustment main shaft 47 and the threaded hole on the seed wheel adjustment support end cover 48, thereby realizing the depth adjustment of the mold hole.

[0100] In this embodiment, preferably, the rice direct seeding machine further includes a connecting square tube 50, and the depth adjustment spindles 47 and the power input gear shafts 51 corresponding to adjacent seeding devices 4 are connected through the connecting square tube 50. By connecting the depth adjustment spindles 47 on adjacent seeding devices 4 through the connecting square tube 50, the sowing amount of multiple seeding devices 4 can be adjusted, and the power input gear shaft 51 can be connected through the connecting square tube 50 to achieve synchronous driving of the sowing wheels of multiple seeding devices 4, ensuring that each seeding device 4 sows seeds at the same time.

[0101] In this embodiment, preferably, the rice direct seeding machine further includes a rotating handle 52 , and the rotating handle 52 includes: a rotating handle support plate 37 , a fixed spur internal gear 53 , a handle 56 and a fixed spur gear 57 .

[0102] The rotating handle support plate 37 is connected to the support seat.

[0103] The fixed spur internal gear 53 is fixedly connected to the rotating handle support plate 37;

[0104] One end of the handle 56 passes through the rotating handle support plate 37 inside the fixed spur internal gear 53 and is connected to the end of the depth adjustment spindle 47;

[0105] The fixed spur gear 57 is fixed to the handle 56 through a bearing. When one end of the handle 56 close to the depth adjustment spindle 47 is connected to the depth adjustment spindle 47, the fixed spur gear 57 meshes with the fixed spur internal gear 53. The handle 56 can drive the depth adjustment spindle 47 to rotate, thereby driving the axial movement of the depth adjustment spindle 47.

[0106] It should be noted that the rotating handle support plate 37 is fixed on the supporting seat inclined cover plate 33, the rotating handle support plate 37 is an L-shaped structure, and a plate rib 38 is arranged at the bending part of the L-shaped structure. The arrangement of the plate rib 38 can improve the strength of the rotating handle support plate 37, and a through hole is arranged on the rotating handle support plate 37, a flange stroke bearing 36 is arranged on one side of the through hole, and a fixed spur gear 53 is arranged on the other side. The handle 56 is also an L-shaped structure, and the end of the handle 56 away from the depth adjustment spindle 47 has a 90° bend, and a handle cover 55 is sleeved on the bent part of the handle 56, and the handle 56 is provided with a threaded section at one end of the handle cover 55, and a fixing nut 54 is connected to the threaded section, and the fixing nut 54 limits the handle cover 55.

[0107] In this embodiment, the elevation profiling device 9 includes: a profiling pontoon 71 , a pontoon rear connecting frame 67 and a pontoon middle connecting frame 68 .

[0108] The end of the contoured pontoon 71 is hinged to the soil contacting component 8 , and a pontoon front mounting frame 70 is provided at the top of the contoured pontoon 71 .

[0109] The pontoon rear connecting frame 67 is arranged above the contoured pontoon 71 , and the pontoon rear connecting frame 67 is connected to the cross beam 12 through the contoured support steel plate 73 .

[0110] The middle part of the pontoon middle connecting frame 68 is rotatably connected to the pontoon rear connecting frame 67, one end of the pontoon middle connecting frame 68 is connected to the pontoon front mounting frame 70 through the pontoon front connecting frame 69, and the two ends of the pontoon front connecting frame 69 are respectively hinged to the pontoon front mounting frame 70 and the pontoon middle connecting frame 68, and the other end of the pontoon middle connecting frame 68 is connected to the hydraulic cylinder of the machine head 1 through the hydraulic cable 72. Specifically, an elevation profiling cable mounting plate 66 is provided on the pontoon rear connecting frame 67, and a through hole for the hydraulic cable 72 to pass through is provided on the elevation profiling cable mounting plate 66.

[0111] It should be noted that there are two contoured pontoons 71, and the two contoured pontoons 71 are connected by a pontoon connecting circular tube 77. The front end bottom of the contoured pontoon 71 has an arc, and the rear end of the contoured pontoon 71 is hinged to the soil contact component 8 by a hinge 76. Specifically, a pontoon hinge plate 75 is provided on the soil contact component 8, and the rear end of the contoured pontoon 71 is connected to the pontoon hinge plate 75 by a hinge 76, thereby realizing the rotational connection between the contoured pontoon 71 and the soil contact component 8. At the same time, a pontoon hinged fixing plate 74 is provided between the pontoon hinge plate 75 and the soil contact component 8 to enhance the connection strength between the pontoon hinge plate 75 and the soil contact component 8. With such arrangement, when the contoured pontoon 71 encounters an undulating surface, the contoured pontoon 71 rotates counterclockwise, pushing the front connecting frame 69 of the pontoon to rotate, and then pushing the middle connecting frame 68 of the pontoon to rotate clockwise, thereby stretching the hydraulic pull line 72, causing the hydraulic cylinder to fill with oil, and lifting the entire machine's hanging part; after the contoured pontoon 71 passes over the undulating surface, the contoured pontoon 71 returns to its initial state by its own weight, the hydraulic cylinder discharges oil, and the entire machine's hanging part descends to its original position.

[0112] In the above embodiment, the front end bottom of the soil-contacting bottom plate 58 has an arc, and the pontoon hinged plate 75 is installed at the upper edge of the front end of the soil-contacting bottom plate 58. Preferably, five ditch openers 62 are provided, and four seed ditch openers 63 are provided. A rib plate 59 is provided inside the soil-contacting bottom plate 58. The setting of the rib plate 59 can improve the strength of the soil-contacting bottom plate 58. A soil-contacting bottom plate angle iron 64 is provided at the end inside the soil-contacting bottom plate 58. Standing feet 65 are provided at both ends of the soil-contacting bottom plate angle iron 64. The setting of the standing feet 65 is used to install the standing caster 6. At the same time, side fenders 60 are provided on the soil-contacting side plates 61 at both ends of the soil-contacting bottom plate 58. The side fenders 60 can prevent the mud at the front end of the soil-contacting bottom plate 58 from flowing to the two sides of the rice direct seeding machine, ensuring that the mud will not cover the seeds. Three rib plates 59 are welded on the inner side of the soil-contacting bottom plate 58 to support the curvature of the front end of the soil-contacting bottom plate 58.

[0113] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0114] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rice direct seeding machine, characterized in that: include: A machine head, a parallel four-bar hanging device, a whole machine hanging device, a seeding device, a frame, a standing caster, an overall sowing amount adjustment mechanism, a soil contact component, a transmission system and an elevation profiling device, the parallel four-bar hanging device is connected to the rear of the machine head, the whole machine hanging device is connected to the parallel four-bar hanging device, the top of the frame is connected to the whole machine hanging device, the bottom of the frame is connected to the soil contact component, a plurality of seeding devices are provided, and a plurality of the seeding devices are fixed on the frame at intervals, one end of the elevation profiling device is rotatably connected to the soil contact component, and the other end of the elevation profiling device is connected to the hydraulic cylinder of the machine head, and the elevation profiling device can be driven by the drive of the hydraulic cylinder to rotate at the connection between the elevation profiling device and the soil contact component, the transmission system is arranged on the frame, the transmission system is transmission-connected to the seeding device, the overall sowing amount adjustment mechanism is connected to a plurality of the seeding devices, and the overall sowing amount adjustment mechanism is used to adjust the sowing amount of the seeding device; Among them, the soil-contacting parts include a soil-contacting bottom plate, soil-contacting side plates, a ditch opener and a seed ditch opener. The soil-contacting side plates are arranged on both sides of the soil-contacting bottom plate, a plurality of ditch openers are arranged at intervals at the bottom of the soil-contacting bottom plate, and the seed ditch openers are arranged between adjacent ditch openers. The standing casters are fixedly connected to the soil-contacting bottom plate.

2. The rice direct seeding machine according to claim 1, characterized in that: The parallel four-bar hitch device comprises: A parallel four-bar mechanism, one end of which is hinged to the machine head; A parallel four-bar mounting plate, hinged to an end of the parallel four-bar mechanism away from the machine head; A load-bearing bent plate, fixedly connected to one end of the parallel four-bar hanging plate away from the parallel four-bar mechanism, the load-bearing bent plate having an arc-shaped slot for clamping the whole machine hanging device; A parallelogram-bar hanging locking plate is fixedly connected to one end of the parallelogram-bar hanging plate away from the parallelogram-bar mechanism. The parallelogram-bar hanging locking plate is located below the load-bearing bending plate. The parallelogram-bar hanging locking plate is used to be fixedly connected to the whole machine hanging device.

3. The rice direct seeding machine according to claim 2, characterized in that: The parallel four-bar mounting plate comprises: A parallelogram-mounted inner plate and a parallelogram-mounted outer plate are arranged at intervals from each other, the parallelogram-mounted inner plate and the parallelogram-mounted outer plate are respectively hinged to the ends of the connecting rods on the corresponding sides of the parallelogram-mounted mechanism, and the load-bearing bending plate and the parallelogram-mounted locking plate are both connected to the ends of the parallelogram-mounted inner plate and the parallelogram-mounted outer plate away from the parallelogram-mounted mechanism; A parallelogram-mounted main plate, used to connect the parallelogram-mounted inner plate and the parallelogram-mounted outer plate at one end away from the parallelogram-mounted mechanism; The parallelogram-bar suspension support plate is connected between the parallelogram-bar suspension inner plate and the parallelogram-bar suspension outer plate, and is used for supporting the parallelogram-bar suspension inner plate and the parallelogram-bar suspension outer plate.

4. The rice direct seeding machine according to claim 3, characterized in that: The whole machine mounting device comprises: Machine mounting plate; An upper hook rod is fixedly connected to one side of the whole machine mounting plate, and the upper hook rod is used to be clamped in the arc-shaped clamping groove of the load-bearing bending plate; A whole machine hooking locking plate, fixedly connected to a side of the whole machine hooking plate connected to the upper hook rod, the whole machine hooking locking plate is located below the upper hook rod, and the whole machine hooking locking plate is used to connect with the parallelogram hooking locking plate; The load-bearing shaft has one end connected to the whole machine mounting plate, and the other end connected to the top of the frame through a bearing seat structure.

5. The rice direct seeding machine according to claim 4, characterized in that: The whole machine mounting plate comprises: A whole machine hanging side plate, wherein two whole machine hanging side plates are provided, the two whole machine hanging side plates are arranged at intervals, and the upper hook rod is arranged between the two whole machine hanging side plates; A whole machine mounting main board, used to connect two whole machine mounting side panels away from one end of the upper hook rod; A whole machine mounting reinforcement plate is located below the whole machine mounting main board, and two ends of the whole machine mounting reinforcement plate are respectively connected to one end of the two whole machine mounting side plates away from the whole machine mounting locking plate; A front reinforcement plate for whole machine mounting is arranged below the whole machine mounting locking plate, two ends of the front reinforcement plate for whole machine mounting are respectively connected to the whole machine mounting side plates located on both sides below the whole machine mounting locking plate, and one end of the load-bearing shaft is connected to the front reinforcement plate for whole machine mounting; The whole machine hanging upper cover plate is used to connect the tops of the two whole machine hanging side plates.

6. The rice direct seeding machine according to claim 5, characterized in that: The frame comprises: A crossbeam, the bearing seat being arranged on the top of the crossbeam; There are two support seats, which are symmetrically arranged at both ends of the beam; An upper support tube, both ends of which are respectively connected to the two support seats, and the upper support tube is provided with mounting holes corresponding to the number of the plurality of seeding devices at intervals; A lower support tube is arranged below the upper support tube, and both ends of the lower support tube are respectively connected to the two support seats, and the upper support tube and the lower support tube are used to fix the seed metering device; There are two limit support springs, which are symmetrically and obliquely arranged at the two ends of the top of the beam, one end of the limit support spring is connected to the top of the beam, and the other end is connected to the whole machine hanging side plate on the corresponding side.

7. The rice direct seeding machine according to claim 6, characterized in that: The seed metering device comprises: The adjusting mechanism comprises a shell and a seeding wheel, one end of the shell is connected to the upper support tube, the other end of the shell is against the lower support tube, the seeding wheel is rotatably arranged in the shell, and the seeding wheel has a circumferential hole; A seed box, arranged at the top of the adjusting mechanism, the seed box being in communication with the interior of the adjusting mechanism; A depth adjustment spindle is axially movable and penetrates the interior of the adjustment mechanism, and the depth of the mold hole can be adjusted by moving the depth adjustment spindle; A power input gear shaft is passed through the adjusting mechanism, a power input gear is arranged on the power input gear shaft, the power input gear is transmission-connected to the transmission system, and the power input gear shaft is transmission-connected to the seeding wheel.

8. The rice direct seeding machine according to claim 7, characterized in that: It also includes a connecting square tube, through which the depth adjustment spindles and power input gear shafts corresponding to adjacent seeding devices are connected.

9. The rice direct seeding machine according to claim 8, characterized in that: Also included is a rotating handle, the rotating handle comprising: A rotating handle support plate is connected to the support seat; A fixed spur internal gear fixedly connected to the rotating handle support plate; A handle, one end of which passes through the rotating handle support plate inside the fixed spur internal gear and is connected to the end of the depth adjustment spindle; A fixed spur gear is fixed to the handle through a bearing. When one end of the handle close to the depth adjustment spindle is connected to the depth adjustment spindle, the fixed spur gear meshes with the fixed spur internal gear. The handle can drive the depth adjustment spindle to rotate, thereby driving the axial movement of the depth adjustment spindle.

10. The rice direct seeding machine according to claim 9, characterized in that: The elevation profiling device comprises: A contoured pontoon, the end of which is hinged to the soil contacting component, and a pontoon front mounting frame is provided at the top of the contoured pontoon; A pontoon rear connection frame is arranged above the contoured pontoon, and the pontoon rear connection frame is connected to the crossbeam through a contoured support steel plate; The middle part of the pontoon middle connecting frame is rotatably connected to the pontoon rear connecting frame, one end of the pontoon middle connecting frame is connected to the pontoon front mounting frame through the pontoon front connecting frame, and the two ends of the pontoon front connecting frame are respectively hinged to the pontoon front mounting frame and the pontoon middle connecting frame, and the other end of the pontoon middle connecting frame is connected to the hydraulic cylinder of the machine head through a hydraulic pull line.

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