Multifunctional self-propelled double-row bean seeder

Abstract

The utility model belongs to the technical field of agricultural mechanical equipment, and particularly relates to a multifunctional self-propelled double-row bean seeder which comprises a chassis frame, a plough leg lifting mechanism, two seed metering and discharging mechanisms and a synchronous belt power transmission mechanism, the chassis frame is of a rectangular frame structure and comprises a first front support, a first rear support, a first left support and a first right support, wherein the first front support and the first rear support extend leftwards and rightwards in the horizontal direction, and the first left support and the first right support extend forwards and backwards in the horizontal direction. The first front support is located in front of the first rear support, and the first left support is located on the left of the first right support. According to the utility model, the two seed-metering devices are arranged side by side, so that the seeds can be prevented from being overlapped and connected in the falling process, meanwhile, the seeds can accurately fall into double-row grooves ploughed by a plough leg lifting mechanism of the seeder, and the seeds can be accurately thrown by controlling the falling speed of the seeds and avoiding the bounce of the seeds.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery and equipment, and specifically relates to a multifunctional self-propelled double-row bean seeder. Background Art

[0002] Sowing is a basic link in agriculture, and the quality of sowing will directly affect the emergence rate in the future. With the continuous updating and iteration of seeders, there are more and more seeders. A precision seeder is a device for precise sowing. It not only has the advantages of saving good varieties, uniform distribution of plants in the field, reasonable density planting, and conducive to seedling growth, but also has the performance of saving time, saving labor and increasing production. For precision seeders, the key component is the seed meter. The function and seeding efficiency of the seed meter directly affect the sowing performance of the seeder.

[0003] A variety of self-propelled seeding equipment are disclosed in the prior art, all of which use seeding devices to achieve seeding. For example, Chinese patent No. CN107094402A discloses a self-propelled full-film double-furrow seeder, which can achieve self-propelled movement on the film and adjustment of seeding depth, wheel spacing, etc. by setting a self-propelled chassis and a seeding device assembly. However, in this patent, since the seeding device in the seeding device assembly is vertically arranged and rotated vertically, double-row seeding cannot be achieved, and only single-row seeding can be achieved.

[0004] Therefore, on the basis of the prior art, the utility model designs a multifunctional self-propelled double-row bean seeder, which, by arranging two side-by-side seeding devices, can achieve the accurate falling of seeds into the double-row grooves opened by the plow leg lifting mechanism of the seeder, and can achieve efficient and accurate operation during the sowing process, with the characteristics of precision and efficiency. Utility Model Content

[0005] The utility model provides a multifunctional self-propelled double-row bean seeder. By arranging two side-by-side seeding devices, it is possible to prevent overlapping and entanglement of seeds during the falling process, and at the same time, the seeds can be accurately dropped into the double-row grooves opened by the plow leg lifting mechanism of the seeder. The seed falling speed can also be controlled to avoid seed bouncing, thereby achieving accurate seed placement.

[0006] Based on the above purpose, the utility model adopts the following technical solutions:

[0007] A multifunctional self-propelled double-row bean seeder comprises a chassis frame, a plow leg lifting mechanism, two seed row and seed placement mechanisms and a synchronous belt power transmission mechanism;

[0008] The chassis frame is a rectangular frame structure, and includes a first front bracket and a first rear bracket extending left and right in the horizontal direction, and a first left bracket and a first right bracket extending front and back in the horizontal direction; the first front bracket is located in front of the first rear bracket, and the first left bracket is located on the left side of the first right bracket;

[0009] The chassis frame is formed by interconnecting a first front bracket, a first rear bracket, a first left bracket and a first right bracket;

[0010] The four corners at the bottom of the chassis frame are all provided with inverted U-shaped wheel brackets; the bottom of the wheel brackets are provided with running wheels;

[0011] A first storage box is provided at the rear side of the top end of the chassis frame, and a rectangular second support frame is provided above the first storage box;

[0012] The bottom end of the second support frame is connected to the top end of the chassis frame through a vertical connecting rod;

[0013] A seed box and a medicine box are mounted on the top of the second support frame; the medicine box is located on the left side of the seed box;

[0014] A seeding mechanism fixing frame is also provided in the middle of the chassis frame. The seeding mechanism fixing frame is arranged in front of the second reinforcing bracket, and the seeding mechanism fixing frame extends left and right in the horizontal direction. The left end of the seeding mechanism fixing frame is fixedly connected to the first left bracket, and the right end of the seeding mechanism fixing frame is fixedly connected to the first right bracket.

[0015] Two seeding and placing mechanisms are arranged on the top of the seeding mechanism fixing frame;

[0016] The left seed placement mechanism corresponds to the left and right positions of the medicine box, and the right seed placement mechanism corresponds to the left and right positions of the seed box;

[0017] A first discharge port is provided at the bottom of the medicine box, and the first discharge port is connected to a first discharge pipe. A second discharge port is provided at the bottom of the seed box, and the second discharge port is connected to a second discharge pipe. Both the first discharge pipe and the second discharge pipe extend downwardly in a front-to-back direction. The bottom opening of the first discharge pipe is located above the left seed placement mechanism, and the bottom opening of the second discharge pipe is located above the right seed placement mechanism.

[0018] Both seeding and placing mechanisms include a seeding device; the diameter of the seeding device is greater than the front-to-back width of the seeding mechanism fixing frame;

[0019] The two seeding mechanisms also include a seeding device support block and a seeding device rotating shaft arranged below the seeding device;

[0020] The seed metering device can be rotated relative to the seed metering mechanism fixing frame through the seed metering device rotating shaft;

[0021] The synchronous belt power transmission mechanism includes a transmission motor and a transmission belt, and the transmission motor is fixedly arranged at the front end of the seeding mechanism fixing frame;

[0022] The synchronous belt power transmission mechanism can drive the rotating shaft of the seed metering device to rotate relative to the seed metering mechanism fixing frame;

[0023] The plow leg lifting mechanism is located at the front side of the seeding mechanism fixing frame; the plow leg lifting mechanism comprises a first lifting seat, a second lifting seat, a first horizontal connecting rod, a first plow leg, and a second plow leg;

[0024] The plow leg lifting mechanism can plow double-row furrows on the forward route of the multifunctional self-propelled double-row bean seeder, and seeds can be sent into the furrows plowed by the plow leg lifting mechanism for sowing through two seeding devices arranged side by side.

[0025] Furthermore, the specific connection method of the first front bracket, the first rear bracket, the first left bracket and the first right bracket is:

[0026] The left end of the first front bracket is connected to the front end of the first left bracket, the right end of the first front bracket is connected to the front end of the first right bracket, the left end of the first rear bracket is connected to the rear end of the first left bracket, and the right end of the first rear bracket is connected to the rear end of the first right bracket.

[0027] Furthermore, in order to increase the connection strength of the chassis frame and prevent deformation during use, a first reinforcing bracket and a second reinforcing bracket are provided between the first left bracket and the first right bracket, and the first reinforcing bracket and the second reinforcing bracket both extend left and right in the horizontal direction.

[0028] Furthermore, the first reinforcement bracket is located close to the first front bracket, and the second reinforcement bracket is located close to the first rear bracket.

[0029] Furthermore, each inverted U-shaped wheel bracket includes a horizontally arranged fixed surface and two vertical support plates fixedly connected to the bottom end of the fixed surface; the running wheel is arranged between the two vertical support plates, and the running wheel is rotatably connected to the two vertical support plates; that is, each wheel bracket corresponds to a running wheel, and each wheel bracket and its corresponding running wheel constitute a running mechanism;

[0030] The fixing surfaces of the wheel brackets are respectively fixedly connected to the four corners of the bottom end of the chassis frame to achieve the installation of each walking mechanism.

[0031] Furthermore, the first storage box extends left and right in the horizontal direction, the front side of the bottom end of the first storage box is arranged at the top end of the second reinforcing bracket, and the rear side of the bottom end of the first storage box is arranged at the top end of the first rear bracket.

[0032] Furthermore, the second support frame includes a second left bracket and a second right bracket extending forward and backward in the horizontal direction, and a second front bracket and a second rear bracket extending left and right in the horizontal direction; the second left bracket is located above the first left bracket, the second right bracket is located above the first right bracket, the second front bracket is located above the second reinforcing bracket, and the second rear bracket is located above the first rear bracket.

[0033] Furthermore, there are 6 vertical connecting rods, wherein the top ends of the two vertical connecting rods on the left side are respectively connected to the front end and the rear end of the second left bracket, and the bottom ends of the two vertical connecting rods on the left side are respectively connected to the front end and the rear end of the first left bracket;

[0034] The top ends of the two vertical connecting rods on the right side are respectively connected to the front end and the rear end of the second right bracket, and the bottom ends of the two vertical connecting rods on the right side are respectively connected to the front end and the rear end of the first right bracket;

[0035] The top end of a vertical connecting rod on the front side is connected to the middle of the second front bracket, and the bottom end is connected to the middle of the second reinforcement bracket. The top end of a vertical connecting rod on the rear side is connected to the middle of the second rear bracket, and the bottom end is connected to the middle of the first rear bracket; that is, the second support frame is fixed above the first storage box by 6 vertical connecting rods.

[0036] Furthermore, a second storage box is arranged on the top ends of the first front bracket and the first reinforcing bracket.

[0037] Furthermore, the vertical distance between the two seed placement mechanisms and the chassis frame is smaller than the vertical distance between the seed box (or medicine box) and the chassis frame.

[0038] Furthermore, both the first feed pipe and the second feed pipe are provided with manual valves for starting or stopping the falling of the medicine in the first feed pipe or the seeds in the second feed pipe.

[0039] Furthermore, each seed meter includes a seed plate, a seed screening plate, and a circular seed retaining ring;

[0040] The top of the seeding disc is open, and the seeding disc includes a first annular rotating bottom plate and a conical second rotating bottom plate. The conical second rotating bottom plate is a conical structure that is thick in the middle and gradually becomes thinner toward the outer circumference, so that the seeds falling into the second rotating bottom plate can fall from the outer circumference of the second rotating bottom plate.

[0041] There is a circular feeding channel in the middle of the annular first rotating bottom plate, and the conical second rotating bottom plate is arranged at the feeding channel in the middle of the annular first rotating bottom plate, and the diameter of the second rotating bottom plate is smaller than the outer diameter of the feeding channel, that is, a circular gap for seeds to fall is formed between the second rotating bottom plate and the first rotating bottom plate.

[0042] A circular vertical side wall is arranged at the top outer peripheral edge of the circular first rotating bottom plate; a plurality of first connecting strips are arranged at the edge of the top end of the second rotating bottom plate, and the second rotating bottom plate is connected to the circular vertical side wall through the first connecting strips.

[0043] Specifically, three first connecting strips are provided, and the three first connecting strips are evenly distributed at the edge of the top end of the second rotating base plate, and the annular gap between the second rotating base plate and the first rotating base plate for seeds to fall is evenly divided into a first arc-shaped gap on the left side, a second arc-shaped gap on the front side, and a third arc-shaped gap on the rear side.

[0044] Further preferably, in order to facilitate the falling of seeds, a downwardly bent arc ramp is also provided on the inner side of the circular vertical side wall near the second rotating bottom plate, the top of the arc ramp is connected to the inner side of the vertical side wall, and the bottom end of the arc ramp is connected to the inner edge of the first rotating bottom plate near the second rotating bottom plate; by arranging the arc ramp on the circular vertical side wall and the conical structure of the second rotating bottom plate, the seeds falling into the seed tray can fall from the circular gap between the second rotating bottom plate and the first rotating bottom plate, and the seeds falling into the seed tray can be gathered in the designated working area, thereby promoting the accuracy of the seed screening process.

[0045] Furthermore, a first stopper and a second stopper are provided in the seeding disc, wherein the first stopper is an arc-shaped block structure; and the second stopper is an arc-shaped sheet structure;

[0046] The first stopper and the second stopper are both arranged above the annular gap between the second rotating bottom plate and the first rotating bottom plate for seeds to fall. Specifically, the first stopper is located above the first arc-shaped gap, and the first stopper can block the first arc-shaped gap.

[0047] A connecting protrusion is provided on one side of the first stopper close to the annular vertical side wall, and a connecting notch is provided on the arc ramp close to the first arc gap. The connecting protrusion on the first stopper can be embedded in the connecting notch and detachably connected to the connecting notch.

[0048] Specifically, threaded holes are provided at positions of the first rotating base plate corresponding to the connection notches and on the connection protrusions. Bolts are inserted into the threaded holes to achieve threaded connection between the connection protrusions on the first stopper and the connection notches.

[0049] Furthermore, the second baffle is located above the third arc-shaped gap, and a connecting piece is provided on one side of the second baffle close to the annular vertical side wall, and the second baffle is detachably connected to the annular vertical side wall via the connecting piece.

[0050] Specifically, threaded holes are provided on the annular vertical side wall and the connecting piece, and threaded connection between the connecting piece on the second baffle and the annular vertical side wall can be achieved by inserting bolts into the threaded holes.

[0051] Furthermore, the left end of the second baffle is detachably connected to the first connecting strip between the first arc-shaped gap and the third arc-shaped gap, and the right end of the second baffle is detachably connected to the first connecting strip between the third arc-shaped gap and the second arc-shaped gap; through the detachable connection between the second baffle and the two first connecting strips, an inclined gap for seeds to fall is formed between the second baffle and the second rotating base plate; the specific detachable connection can be achieved by bolt connection.

[0052] Furthermore, the seed screen is arranged at the bottom end of the seeding plate, and the seed retaining ring is arranged at the bottom end of the seed screen;

[0053] The seed sieve plate comprises an annular sieve ring and a circular sieve plate rotating shaft; the outer diameter of the sieve ring is smaller than the inner diameter of the first rotating bottom plate, and the inner diameter of the sieve ring is larger than the outer diameter of the second rotating bottom plate; that is, the position of the sieve ring corresponds to the position of the annular gap between the second rotating bottom plate and the first rotating bottom plate;

[0054] The middle of the annular sieve ring is a rotating gap, the diameter of the sieve plate rotating shaft is smaller than the diameter of the sieve ring rotating gap, the sieve plate rotating shaft is arranged in the rotating gap in the middle of the sieve ring, and the sieve plate rotating shaft is connected to the sieve ring through a plurality of second connecting strips.

[0055] Specifically, the rotating shaft of the sieve plate is connected to the sieve ring through four second connecting bars.

[0056] Furthermore, the sieve ring is provided with two circles of sieve holes opened according to the seed size, and the seeds falling from the annular gap between the second rotating bottom plate and the first rotating bottom plate on the seeding disc can pass through the sieve holes on the sieve ring;

[0057] A rotation clamping groove is also arranged at the top of the rotating shaft of the sieve plate, and a rotation clamping protrusion is also arranged at the position corresponding to the rotation clamping groove at the bottom end of the second rotating bottom plate, and the rotation clamping protrusion can be embedded in the rotation clamping groove.

[0058] Further, the seed retaining ring includes an inner ring and an outer ring arranged at the bottom end of the inner ring, the inner diameter of the outer ring is consistent with the inner diameter of the inner ring; the outer diameter of the outer ring is greater than the outer diameter of the sieve ring, and the outer diameter of the outer ring is consistent with the outer diameter of the first rotating bottom plate; the outer diameter of the inner ring is consistent with the outer diameter of the sieve ring, that is, the position of the outer ring corresponds to the position of the first rotating bottom plate;

[0059] An arc-shaped long hole is provided on the inner ring of the seed retaining ring, and the arc-shaped long hole passes through the inner ring and the outer ring downward in sequence; the arc-shaped long hole corresponds to the positions of several sieve holes, and the arc-shaped long hole corresponds to the upper and lower positions of the third arc-shaped gap; by arranging the arc-shaped long hole on the seed retaining ring, the seeds falling from the sieve holes can enter the arc-shaped long hole, and fall to the bottom of the seed meter through the arc-shaped long hole.

[0060] Furthermore, an outer ring threaded hole is provided on the outer ring of the seed retaining ring, and a first rotating bottom plate threaded hole is provided at a position corresponding to the outer ring threaded hole on the first rotating bottom plate; two outer ring threaded holes are symmetrically provided on the outer ring of the seed retaining ring;

[0061] When assembling the seed metering device, the first stopper is first installed above the first arc-shaped gap, and the connecting protrusion of the first stopper is embedded in the connecting notch, and the connecting protrusion on the first stopper and the connecting notch are threadedly connected by inserting bolts into the connecting protrusion and the threaded holes on the first rotating bottom plate;

[0062] The connecting piece on the second baffle plate and the annular vertical side wall can be threadedly connected by inserting bolts into the threaded holes on the annular vertical side wall and the connecting piece;

[0063] Then, the rotating clamping protrusion at the bottom end of the second rotating bottom plate is embedded into the rotating clamping groove at the top end of the sieve plate rotating shaft, so that the seed sieve plate is installed to the bottom end of the seeding plate. At this time, the position of the sieve hole on the sieve ring corresponds to the position of the annular gap between the second rotating bottom plate and the first rotating bottom plate;

[0064] Then fit the inner ring of the seed retaining ring to the bottom end of the sieve ring, and pass the bolts through the threaded holes of the outer ring and the threaded holes of the first rotating bottom plate in sequence, so that the seed plate, seed sieve plate, and seed retaining ring can be assembled together.

[0065] Furthermore, since the bottom end of the first feed pipe extends above the opening at the top of the left seed tray, and the bottom end of the second feed pipe extends above the opening at the top of the right seed tray, during the entire sowing process, the first feed pipe and the second feed pipe can be used to allow the seeds in the seed box or the medicine in the medicine box to enter the opening at the top of the seed tray, and allow the seeds to fall into a specific area in the seed tray, thereby ensuring a continuous supply of seeds.

[0066] Furthermore, the two seeding device support blocks are fixedly arranged on the top of the seeding mechanism fixing frame, the two seeding devices are respectively located above the two seeding device support blocks, and the two seeding devices are rotatably connected to the two seeding device support blocks through two seeding device rotating shafts.

[0067] Furthermore, a rotating through hole is provided at the center of the rotating shaft of the sieve plate, and a rotating groove is provided at the position of the rotating clamping protrusion at the bottom end of the second rotating bottom plate corresponding to the rotating through hole at the center of the rotating shaft of the sieve plate; the top end of the rotating shaft of the seed meter passes through the rotating through hole in the middle of the rotating shaft of the sieve plate, and penetrates into the rotating groove at the bottom end of the second rotating bottom plate, and is fixedly connected with the rotating shaft of the sieve plate and the second rotating bottom plate;

[0068] A first rotating gear is also fixedly arranged on the rotating shaft of the seed metering device.

[0069] Furthermore, the output shaft of the transmission motor extends upward, a second rotating gear is fixedly provided at the top end of the output shaft of the transmission motor, an inner gear tooth is provided on one side of the transmission belt, and both the first rotating gear and the second rotating gear are provided with outer gear teeth;

[0070] The transmission belt is sleeved on the outer periphery of the first rotating gear and the second rotating gear, and the internal gear teeth on the transmission belt are meshed with the gear teeth of the first rotating gear and the second rotating gear, so as to realize the transmission connection between the transmission belt and the first rotating gear and the second rotating gear.

[0071] Further preferably, the synchronous belt power transmission mechanism further comprises two guide rotating bearings and two bearing rotating shafts, the two bearing rotating shafts are arranged at the top of the seeding mechanism fixing frame, and the two guide rotating bearings are rotatably connected to the two bearing rotating shafts respectively;

[0072] The side of the transmission belt without the internal gear teeth passes around two guide rotating bearings, and the transmission belt is tightened through the two guide rotating bearings;

[0073] By starting the transmission motor, the output shaft of the transmission motor rotates, thereby driving the second rotating gear to rotate, and the meshing of the outer gear on the second rotating gear with the inner gear on the transmission belt, and the meshing of the outer gear on the first rotating gear with the inner gear on the transmission belt, thereby driving the first rotating gear to rotate, and the rotation of the first rotating gear drives the rotating shaft of the seed metering device to rotate, and the rotation of the rotating shaft of the seed metering device drives the rotating shaft of the sieve plate and the second rotating bottom plate to rotate, thereby realizing the rotation of the seed metering device, and achieving that the seeds falling into the seed metering plate can be continuously and evenly distributed to the sieve holes, and finally the seeds are accurately delivered.

[0074] Further, the first lifting seat and the second lifting seat both extend in the vertical direction, the first lifting seat is located on a side close to the first left bracket (specifically the right side), and the second lifting seat is located on a side close to the first right bracket (specifically the left side); the first horizontal connecting rod extends left and right in the horizontal direction; the left end of the first horizontal connecting rod is connected to the right end of the first lifting seat, and the right end of the first horizontal connecting rod is connected to the left end of the second lifting seat;

[0075] The first plow leg and the second plow leg are both arranged at the bottom end of the first horizontal connecting rod, and the first plow leg and the second plow leg both extend in the vertical direction, and the first plow leg is close to the connection between the left end of the first horizontal connecting rod and the first lifting seat, and the second plow leg is close to the connection between the right end of the first horizontal connecting rod and the second lifting seat.

[0076] Furthermore, the plow leg lifting mechanism also includes a third plow leg, a fourth plow leg, a first extension rod, a second extension rod and a second horizontal connecting rod;

[0077] The first extension rod and the second extension rod both extend forward and backward in the horizontal direction, and the third plow leg and the fourth plow leg both extend in the vertical direction; the front end of the first extension rod is connected to the middle of the first plow leg, the top end of the third plow leg is connected to the rear end of the first extension rod, the front end of the second extension rod is connected to the middle of the second plow leg, and the top end of the fourth plow leg is connected to the rear end of the second extension rod;

[0078] The second horizontal connecting rod extends left and right along the horizontal direction; the left end of the second horizontal connecting rod is connected to the middle part of the first extension rod, and the right end of the second horizontal connecting rod is connected to the middle part of the second extension rod.

[0079] Further preferably, the top of the first lifting seat and the top of the second lifting seat are both provided with a lifting structure; the lifting structure at the top of the first lifting seat is a first lifting cylinder, and the lifting structure at the top of the second lifting seat is a second lifting cylinder;

[0080] The first lifting cylinder is fixed on the right side of the first left bracket, and the second lifting cylinder is fixed on the left side of the first right bracket; the cylinder rod of the first lifting cylinder and the cylinder rod of the second lifting cylinder both extend downward; the cylinder rod of the first lifting cylinder is connected to the top of the first lifting seat, and the cylinder rod of the second lifting cylinder is connected to the top of the second lifting seat; by starting the first lifting cylinder and the second lifting cylinder, and utilizing the rise or fall of the cylinder rods, the rise or fall of the first lifting seat and the second lifting seat can be driven, thereby driving the rise or fall of the first plow leg, the second plow leg, the third plow leg and the fourth plow leg.

[0081] Furthermore, the first plow leg is arranged at a position close to the right side of the left seed meter, and the third plow leg is arranged at a position close to the left side of the left seed meter; the second plow leg is arranged at a position close to the right side of the right seed meter, and the fourth plow leg is arranged at a position close to the left side of the right seed meter; through such an arrangement, the left and right positions of the grooves opened by the first plow leg and the third plow leg can correspond to the left seed meter, and the left and right positions of the grooves opened by the second plow leg and the fourth plow leg can correspond to the right seed meter.

[0082] The beneficial effects of the utility model are:

[0083] The utility model can reduce labor costs and optimize land use; the multifunctional self-propelled double-row bean seeder of the utility model can be intelligently planned according to land characteristics and crop requirements, optimize land use to the greatest extent, and improve the output efficiency of farmland.

[0084] The utility model is composed of key components such as chassis frame, plow leg lifting mechanism, seed placement mechanism and synchronous belt power transmission mechanism, which can complete sowing and fertilizing at one time, and can also adjust the depth of cultivated land according to different environments and different seed materials, and perform digging and covering operations. The utility model has high operating efficiency and provides technical support for the structural improvement and operating performance optimization of self-propelled agricultural seeders. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] Figure 1 is a stereoscopic diagram of the multifunctional self-propelled double-row bean seeder described in Example 1;

[0086] Figure 2 yes Figure 1 A partial enlarged view of the

[0087] Figure 3 is a top view of the multifunctional self-propelled double-row bean seeder described in Example 1;

[0088] Figure 4 It is a left view of the multifunctional self-propelled double-row bean seeder described in Example 1;

[0089] Figure 5 is a rear view of the multifunctional self-propelled double-row bean seeder described in Example 1;

[0090] Figure 6 It is a left side view of the seed metering device;

[0091] Figure 7 is a bottom view of the seed metering device;

[0092] Figure 8 is a schematic diagram of the disassembled structure of the seed meter;

[0093] Fig. 9 yes Figure 8 Schematic diagram of the first stopper and the second stopper after being disassembled. DETAILED DESCRIPTION

[0094] In order to make the technical means, technical features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0095] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0096] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense; for ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0097] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0098] Example 1

[0099] like Figure 1-9 As shown, a multifunctional self-propelled double-row bean seeder includes a chassis frame, a plow leg lifting mechanism, two seed row and seed placement mechanisms and a synchronous belt power transmission mechanism;

[0100] The chassis frame is a rectangular frame structure, specifically, the chassis frame includes a first front bracket 11 and a first rear bracket 12 extending left and right in the horizontal direction, and a first left bracket 14 and a first right bracket 13 extending front and back in the horizontal direction; the first front bracket 11 is located in front of the first rear bracket 12, and the first left bracket 14 is located on the left side of the first right bracket 13.

[0101] The chassis frame is formed by interconnecting a first front bracket 11, a first rear bracket 12, a first left bracket 14 and a first right bracket 13, and the specific connection method is:

[0102] The left end of the first front bracket 11 is connected to the front end of the first left bracket 14 , the right end of the first front bracket 11 is connected to the front end of the first right bracket 13 , the left end of the first rear bracket 12 is connected to the rear end of the first left bracket 14 , and the right end of the first rear bracket 12 is connected to the rear end of the first right bracket 13 .

[0103] In order to increase the connection strength of the chassis frame and prevent deformation during use, a first reinforcing bracket 21 and a second reinforcing bracket (not shown in the figure) are further provided between the first left bracket 14 and the first right bracket 13. The first reinforcing bracket 21 and the second reinforcing bracket both extend left and right in the horizontal direction.

[0104] Specifically, the first reinforcement bracket 21 is located close to the first front bracket 11 , and the second reinforcement bracket is located close to the first rear bracket 12 .

[0105] An inverted U-shaped wheel bracket 15 is provided at the four corners of the bottom end of the chassis frame, and each inverted U-shaped wheel bracket 15 includes a horizontally arranged fixed surface and two vertical support plates fixedly connected to the bottom end of the fixed surface; a running wheel 16 is provided between the two vertical support plates, and the running wheel 16 is rotatably connected to the two vertical support plates; that is, each wheel bracket 15 corresponds to a running wheel 16, and each wheel bracket and its corresponding running wheel 15 constitute a running mechanism. For the convenience of marking, only the wheel bracket 15 and the running wheel 16 at the right rear position are marked in the figure.

[0106] The fixing surfaces of the wheel brackets 15 are respectively fixedly connected to the four corners of the bottom end of the chassis frame to achieve the installation of each traveling mechanism.

[0107] A first storage box 31 is provided at the rear side of the top of the chassis frame, and the first storage box 31 extends left and right in the horizontal direction. Specifically, the front side of the bottom end of the first storage box 31 is provided at the top of the second reinforcing bracket, and the rear side of the bottom end of the first storage box 31 is provided at the top of the first rear bracket 12;

[0108] A rectangular second support frame 32 is provided above the first storage box 31; the second support frame 32 includes a second left bracket and a second right bracket extending forward and backward in the horizontal direction, and a second front bracket and a second rear bracket extending left and right in the horizontal direction; the second left bracket is located above the first left bracket 14, the second right bracket is located above the first right bracket 13, the second front bracket is located above the second reinforcing bracket, and the second rear bracket is located above the first rear bracket 12;

[0109] The bottom end of the second support frame 32 is connected to the top end of the chassis frame through a vertical connecting rod 33. Specifically, in this embodiment, six vertical connecting rods 33 are provided, wherein the top ends of the two vertical connecting rods 33 on the left side are respectively connected to the front end and the rear end of the second left bracket, and the bottom ends of the two vertical connecting rods 33 on the left side are respectively connected to the front end and the rear end of the first left bracket 14;

[0110] The top ends of the two right vertical connecting rods 33 are respectively connected to the front end and the rear end of the second right bracket, and the bottom ends of the two right vertical connecting rods 33 are respectively connected to the front end and the rear end of the first right bracket 13.

[0111] In addition, the top of a vertical connecting rod 33 on the front side is connected to the middle of the second front bracket, and the bottom is connected to the middle of the second reinforcing bracket. The top of a vertical connecting rod 33 on the rear side is connected to the middle of the second rear bracket, and the bottom is connected to the middle of the first rear bracket 12; that is, the second support frame 32 is fixedly arranged above the first storage box 31 by six vertical connecting rods 33;

[0112] A seed box 34 and a medicine box 35 are mounted on the top of the second support frame 32; the medicine box 35 is located on the left side of the seed box 34;

[0113] Furthermore, a second storage box 18 is provided on the top ends of the first front bracket 11 and the first reinforcing bracket 21 .

[0114] A seeding mechanism fixing frame 17 is also provided in the middle of the chassis frame. The seeding mechanism fixing frame 17 is arranged in front of the second reinforcing bracket, and the seeding mechanism fixing frame 17 extends left and right in the horizontal direction. The left end of the seeding mechanism fixing frame 17 is fixedly connected to the first left bracket 14, and the right end of the seeding mechanism fixing frame 17 is fixedly connected to the first right bracket 13.

[0115] Two seeding and placing mechanisms are arranged at the top of the seeding mechanism fixing frame 17, and the vertical distance between the two seeding and placing mechanisms and the chassis frame is smaller than the vertical distance between the seed box 34 (or the medicine box 35) and the chassis frame;

[0116] The left seed discharging mechanism corresponds to the left and right position of the medicine box 35, and the right seed discharging mechanism corresponds to the left and right position of the seed box 34;

[0117] A first discharge port is provided at the bottom of the medicine box 35, and the first discharge port is connected to a first discharge pipe 351. A second discharge port is provided at the bottom of the seed box 34, and the second discharge port is connected to a second discharge pipe 341. Both the first discharge pipe 351 and the second discharge pipe 341 extend downwardly in an inclined manner in the front-rear direction. The bottom opening of the first discharge pipe 351 is located above the left seed discharging and placing mechanism, and the bottom opening of the second discharge pipe 341 is located above the right seed discharging and placing mechanism.

[0118] Furthermore, both the first feeding pipe 351 and the second feeding pipe 341 are provided with manual valves for opening or stopping the falling of the medicine in the first feeding pipe 351 or the seeds in the second feeding pipe 341;

[0119] The two seeding mechanisms both include a seeding device 4 ; the diameter of the seeding device 4 is larger than the front-to-back width of the seeding mechanism fixing frame 17 .

[0120] like Figure 6-9 As shown, each seed meter 4 includes a seed metering disc, a seed screening disc, and an annular seed retaining ring 61;

[0121] The seeding disk has an open top and includes a first annular rotating bottom plate 41 and a conical second rotating bottom plate 42. The conical second rotating bottom plate 42 is a conical structure that is thick in the middle and gradually becomes thinner toward the outer circumference, so that the seeds that fall into the second rotating bottom plate 42 can fall from the outer circumference of the second rotating bottom plate 42.

[0122] There is a circular feeding channel in the middle of the annular first rotating bottom plate 41, and the conical second rotating bottom plate 42 is arranged at the feeding channel in the middle of the annular first rotating bottom plate 41, and the diameter of the second rotating bottom plate 42 is smaller than the outer diameter of the feeding channel, that is, a circular gap for seeds to fall is formed between the second rotating bottom plate 42 and the first rotating bottom plate 41.

[0123] A circular vertical side wall 43 is provided at the top outer peripheral edge of the circular first rotating bottom plate 41; a plurality of first connecting strips 44 are provided at the top edge of the second rotating bottom plate 42, and the second rotating bottom plate 42 is connected to the circular vertical side wall 43 through the first connecting strips 44;

[0124] Specifically, Figure 8 , 9 As shown, in this embodiment, three first connecting strips 44 are provided, and the three first connecting strips 44 are evenly distributed at the edge of the top end of the second rotating base plate 42, and the annular gap between the second rotating base plate 42 and the first rotating base plate 41 for seeds to fall is evenly divided into a first arc gap 45 on the left side, a second arc gap on the front side (not marked in the figure), and a third arc gap 47 on the rear side.

[0125] Further preferably, in order to facilitate the falling of seeds, a downwardly bent arc ramp 421 is also provided on the inner side of the circular vertical side wall 43 near the second rotating bottom plate 42, and the top of the arc ramp 421 is connected to the inner side of the vertical side wall 43, and the bottom end of the arc ramp 421 is connected to the inner edge of the first rotating bottom plate 41 near the second rotating bottom plate 42; by arranging the arc ramp 421 on the circular vertical side wall 43 and the conical structure of the second rotating bottom plate 42, the seeds falling into the seed tray can fall from the circular gap between the second rotating bottom plate 42 and the first rotating bottom plate 41, and the seeds falling into the seed tray can be gathered in the designated working area, thereby promoting the accuracy of the seed screening process.

[0126] like Figure 8 , 9 As shown, a first stopper 411 and a second stopper 412 are further provided in the seeding disc, wherein the first stopper 411 is a circular arc block structure; and the second stopper 412 is a circular arc sheet structure;

[0127] The first stopper 411 and the second stopper 412 are both disposed above the annular gap between the second rotating bottom plate 42 and the first rotating bottom plate 41 for seeds to fall. Specifically, the first stopper 411 is located above the first arc-shaped gap 45, and the first stopper 411 can block the first arc-shaped gap 45.

[0128] A connecting protrusion 413 is provided on one side of the first stopper 411 close to the circular vertical side wall 43, and a connecting notch is provided at a position of the arc ramp 421 close to the first arc gap 45. The connecting protrusion 413 on the first stopper 411 can be embedded in the connecting notch and be detachably connected to the connecting notch; specifically, threaded holes are provided at the position of the first rotating base plate 41 corresponding to the connecting notch and on the connecting protrusion 413, and threaded connection between the connecting protrusion 413 on the first stopper 411 and the connecting notch can be achieved by inserting bolts into the threaded holes.

[0129] The second baffle 412 is located above the third arc-shaped gap 47. A connecting piece 414 is provided on the side of the second baffle 412 close to the circular vertical side wall 43. The second baffle 412 is detachably connected to the circular vertical side wall 43 through the connecting piece 414. Specifically, threaded holes are provided on the circular vertical side wall 43 and the connecting piece 414. By inserting bolts into the threaded holes, the connecting piece 414 on the second baffle 412 can be threadedly connected to the circular vertical side wall 43.

[0130] Further, the left end of the second baffle 412 is detachably connected to the first connecting strip 44 between the first arc-shaped gap 45 and the third arc-shaped gap 47, and the right end of the second baffle 412 is detachably connected to the first connecting strip 44 between the third arc-shaped gap 47 and the second arc-shaped gap; through the detachable connection between the second baffle 412 and the two first connecting strips 44, an inclined gap for seeds to fall is formed between the second baffle 412 and the second rotating bottom plate 42; the specific detachable connection can be in the form of bolt connection;

[0131] The seeds dropped into the seed tray can pass through the inclined gap between the second baffle 412 and the second rotating bottom plate 42 , and then fall from the third arc-shaped gap 47 .

[0132] like Figure 6-9 As shown, the seed screen plate is arranged at the bottom end of the seed plate, and the seed retaining ring 61 is arranged at the bottom end of the seed screen plate;

[0133] The seed sieve plate includes an annular sieve ring 51 and a circular sieve plate rotating shaft 52; the outer diameter of the sieve ring 51 is smaller than the inner diameter of the first rotating bottom plate 41, and the inner diameter of the sieve ring 51 is larger than the outer diameter of the second rotating bottom plate 42; that is, the position of the sieve ring 51 corresponds to the position of the annular gap between the second rotating bottom plate 42 and the first rotating bottom plate 41;

[0134] The middle of the annular sieve ring 51 is a rotating gap, the diameter of the sieve plate rotating shaft 52 is smaller than the diameter of the rotating gap of the sieve ring 51, the sieve plate rotating shaft 52 is arranged at the rotating gap in the middle of the sieve ring 51, and the sieve plate rotating shaft 52 is connected to the sieve ring 51 through a plurality of second connecting bars 53. Specifically, in this embodiment, the sieve plate rotating shaft 52 is connected to the sieve ring 51 through four second connecting bars 53;

[0135] The sieve ring 51 is provided with two circles of sieve holes 54 opened according to the seed size, and the seeds falling from the annular gap between the second rotating bottom plate 42 and the first rotating bottom plate 41 on the seeding disk can pass through the sieve holes 54 on the sieve ring 51;

[0136] A rotating clamping groove 55 is also provided at the top of the sieve plate rotating shaft 52, and a rotating clamping protrusion (not shown in the figure) is also provided at the bottom end of the second rotating bottom plate 42 corresponding to the rotating clamping groove 55, and the rotating clamping protrusion can be embedded in the rotating clamping groove 55;

[0137] The seed retaining ring 61 includes an inner ring and an outer ring arranged at the bottom end of the inner ring, the inner diameter of the outer ring is consistent with the inner diameter of the inner ring; the outer diameter of the outer ring is greater than the outer diameter of the sieve ring 51, and the outer diameter of the outer ring is consistent with the outer diameter of the first rotating bottom plate 41; the outer diameter of the inner ring is consistent with the outer diameter of the sieve ring 51, that is, the position of the outer ring corresponds to the position of the first rotating bottom plate 41;

[0138] An arc-shaped long hole 62 is provided on the inner ring of the seed retaining ring 61, and the arc-shaped long hole 62 passes through the inner ring and the outer ring downward in sequence; the arc-shaped long hole 62 corresponds to the positions of several sieve holes 54, and the arc-shaped long hole 62 corresponds to the upper and lower positions of the third arc-shaped gap 47; by arranging the arc-shaped long hole 62 on the seed retaining ring 61, the seeds falling from the sieve holes 54 can enter the arc-shaped long hole 62, and fall to the bottom of the seed metering device 4 through the arc-shaped long hole 62.

[0139] Further preferably, the outer ring of the seed retaining ring 61 is further provided with an outer ring threaded hole 63, and the first rotating bottom plate 41 is further provided with a first rotating bottom plate threaded hole (not shown in the figure) at a position corresponding to the outer ring threaded hole 63; specifically, in this embodiment, two outer ring threaded holes 63 are symmetrically provided on the outer ring of the seed retaining ring 61;

[0140] When assembling the seed metering device 4, the first stopper 411 is first installed above the first arc-shaped gap 45, and the connecting protrusion 413 of the first stopper 411 is embedded in the connecting notch, and the connecting protrusion 413 on the first stopper 411 can be threadedly connected to the connecting notch by inserting bolts into the connecting protrusion 413 and the threaded holes on the first rotating bottom plate 41;

[0141] Then, the second baffle 412 is installed above the third arc-shaped gap 47, and bolts are inserted into the threaded holes on the annular vertical side wall 43 and the connecting piece 414, so that the connecting piece 414 on the second baffle 412 can be threadedly connected to the annular vertical side wall 43;

[0142] Then, the rotating clamping protrusion at the bottom end of the second rotating bottom plate 42 is embedded into the rotating clamping groove 55 at the top end of the sieve plate rotating shaft 52, so that the seed sieve plate is installed to the bottom end of the seed plate. At this time, the position of the sieve hole 54 on the sieve ring 51 corresponds to the position of the annular gap between the second rotating bottom plate 42 and the first rotating bottom plate 41;

[0143] Then fit the inner ring of the seed retaining ring 61 to the bottom end of the screen ring 51, and the bolts pass through the outer ring threaded holes 63 and the threaded holes of the first rotating base plate 41 in sequence, so that the seed plate, seed screen plate, and seed retaining ring 61 can be assembled together.

[0144] Since the bottom end of the first feed pipe 351 extends above the opening at the top of the left seed tray, and the bottom end of the second feed pipe 341 extends above the opening at the top of the right seed tray 41, during the entire sowing process, the first feed pipe 351 and the second feed pipe 341 can be used to allow the seeds in the seed box 34 or the medicine in the medicine box 35 to enter the opening at the top of the seed tray, and allow the seeds to fall into a specific area in the seed tray, thereby ensuring a continuous supply of seeds.

[0145] When the seeds fall from the second feeding pipe 341 into the right seeding plate, the seeds first fall from the gap of the seeding plate, then pass through the gap in the middle of the sieve ring 51, and finally pass through the sieve hole 54, so that the seeds can accurately fall into the grooves plowed by the plow leg lifting mechanism of the seeder. The seed falling speed can also be controlled to avoid seed bouncing and achieve accurate seed delivery.

[0146] In order to avoid overlapping and entanglement of seeds (or drugs) during the falling process, during the rotation of the seed disc, the seeds will first fall from the second arc-shaped gap or pass through the inclined gap between the second baffle 412 and the second rotating bottom plate 42 to enter the third arc-shaped gap 47, thereby forming an intermittent falling method, which can prevent the aggregation of seeds from stacking and enable the seeds to fall into the sieve holes 54 on the seed sieve disc; the present application greatly improves the accuracy of seed screening by designing the first baffle 411 and the second baffle 412.

[0147] Further, such as Figure 1-5 As shown, the two seeding mechanisms further include a seeding device support block 81 and a seeding device rotating shaft 82 disposed below the seeding device 4;

[0148] The two seeding device support blocks 81 are fixedly arranged on the top of the seeding mechanism fixing frame 17 , the two seeding devices 4 are respectively located above the two seeding device support blocks 81 , and the two seeding devices 4 are rotatably connected to the two seeding device support blocks 81 via two seeding device rotating shafts 82 .

[0149] Furthermore, a rotation through hole 56 is provided at the center of the sieve plate rotating shaft 52, and a rotation groove (not shown in the figure) is provided at the rotation clamping protrusion at the bottom end of the second rotating bottom plate 42 corresponding to the position of the rotation through hole 56 at the center of the sieve plate rotating shaft 52; the top end of the seed metering device rotating shaft 82 passes through the rotation through hole 56 in the middle of the sieve plate rotating shaft 52, and penetrates into the rotation groove at the bottom end of the second rotating bottom plate 42, and is fixedly connected to the sieve plate rotating shaft 52 and the second rotating bottom plate 42;

[0150] A first rotating gear 83 is also fixedly provided on the seed metering device rotating shaft 82 .

[0151] like Figure 1-5 As shown, the synchronous belt power transmission mechanism includes a transmission motor 7 and a transmission belt 71. The transmission motor 7 is fixedly arranged at the front end of the seeding mechanism fixed frame 17. The output shaft of the transmission motor 7 extends upward. The top end of the output shaft of the transmission motor 7 is fixedly provided with a second rotating gear 72. One side of the transmission belt 71 is provided with internal gear teeth. The first rotating gear 83 and the second rotating gear 72 are both provided with external gear teeth.

[0152] The transmission belt 71 is sleeved on the outer periphery of the first rotating gear 83 and the second rotating gear 72, and the internal gear teeth on the transmission belt 71 are meshed with the gear teeth of the first rotating gear 83 and the second rotating gear 72, so as to realize the transmission connection between the transmission belt 71 and the first rotating gear 83 and the second rotating gear 72.

[0153] Further preferably, the synchronous belt power transmission mechanism further includes two guide rotating bearings 73 and two bearing rotating shafts 74, the two bearing rotating shafts 74 are arranged at the top of the seeding mechanism fixing frame 17, and the two guide rotating bearings 73 are respectively rotatably connected to the two bearing rotating shafts 74;

[0154] The side of the transmission belt 71 without the internal gear teeth passes around two guide rotating bearings 73 , and the transmission belt 71 is tightened by the two guide rotating bearings 73 .

[0155] By starting the transmission motor 7, the output shaft of the transmission motor 7 rotates, thereby driving the second rotating gear 72 to rotate, and the meshing of the outer gear on the second rotating gear 72 with the inner gear on the transmission belt 71, and the meshing of the outer gear on the first rotating gear 83 with the inner gear on the transmission belt 71, thereby driving the first rotating gear 83 to rotate, and the rotation of the first rotating gear 83 drives the seed metering device rotating shaft 82 to rotate, and the rotation of the seed metering device rotating shaft 82 drives the sieve plate rotating shaft 52 and the second rotating bottom plate 42 to rotate, thereby realizing the rotation of the seed metering device 4, and realizing that the seeds falling into the seed metering plate can be continuously and evenly distributed to the sieve holes 54, and finally the seeds are accurately delivered.

[0156] like Figure 1-5 As shown, the plow leg lifting mechanism is located at the front side of the seeding mechanism fixing frame 17; the plow leg lifting mechanism includes a first lifting seat 92, a second lifting seat (not shown in the figure), a first horizontal connecting rod 93, a first plow leg 94, and a second plow leg 95;

[0157] The first lifting seat 92 and the second lifting seat are both extended in the vertical direction, the first lifting seat 92 is located on a side close to the first left bracket 14 (specifically, the right side), and the second lifting seat is located on a side close to the first right bracket 13 (specifically, the left side); the first horizontal connecting rod 93 extends left and right in the horizontal direction; the left end of the first horizontal connecting rod 93 is connected to the right end of the first lifting seat 92, and the right end of the first horizontal connecting rod 93 is connected to the left end of the second lifting seat;

[0158] The first plow leg 95 and the second plow leg 94 are both arranged at the bottom end of the first horizontal connecting rod 93, and the first plow leg 95 and the second plow leg 94 extend in the vertical direction. The first plow leg 95 is close to the connection between the left end of the first horizontal connecting rod 93 and the first lifting seat 92, and the second plow leg 94 is close to the connection between the right end of the first horizontal connecting rod 93 and the second lifting seat.

[0159] Furthermore, the plow leg lifting mechanism further includes a third plow leg 97, a fourth plow leg 96, a first extension rod 951, a second extension rod 941 and a second horizontal connecting rod 98;

[0160] The first extension rod 951 and the second extension rod 941 both extend forward and backward in the horizontal direction, and the third plow leg 97 and the fourth plow leg 96 both extend in the vertical direction; the front end of the first extension rod 951 is connected to the middle of the first plow leg 95, the top end of the third plow leg 97 is connected to the rear end of the first extension rod 951, the front end of the second extension rod 941 is connected to the middle of the second plow leg 94, and the top end of the fourth plow leg 96 is connected to the rear end of the second extension rod 941;

[0161] The second horizontal connecting rod 98 extends horizontally to the left and right; the left end of the second horizontal connecting rod 98 is connected to the middle of the first extension rod 951, and the right end of the second horizontal connecting rod 98 is connected to the middle of the second extension rod 941.

[0162] Further preferably, the top of the first lifting seat 92 and the top of the second lifting seat are both provided with a lifting structure; the lifting structure at the top of the first lifting seat is a first lifting cylinder 921, and the lifting structure at the top of the second lifting seat is a second lifting cylinder 911;

[0163] The first lifting cylinder 921 is fixed on the right side of the first left bracket 14, and the second lifting cylinder 911 is fixed on the left side of the first right bracket 13; the cylinder rod of the first lifting cylinder 921 and the cylinder rod of the second lifting cylinder 911 both extend downward; the cylinder rod of the first lifting cylinder 921 is connected to the top of the first lifting seat 92, and the cylinder rod of the second lifting cylinder 911 is connected to the top of the second lifting seat; by starting the first lifting cylinder 921 and the second lifting cylinder 911, and using the rise or fall of the cylinder rod, the first lifting seat 92 and the second lifting seat can be driven to rise or fall, thereby driving the first plow leg 95, the second plow leg 94, the third plow leg 97 and the fourth plow leg 96 to rise or fall.

[0164] Furthermore, the first plow leg 95 is arranged at a position close to the right side of the left seed-metering device 4, and the third plow leg 97 is arranged at a position close to the left side of the left seed-metering device 4; the second plow leg 94 is arranged at a position close to the right side of the right seed-metering device 4, and the fourth plow leg 96 is arranged at a position close to the left side of the right seed-metering device 4; through such an arrangement, the left and right positions of the grooves opened by the first plow leg 95 and the third plow leg 97 can correspond to the left seed-metering device 4, and the left and right positions of the grooves opened by the second plow leg 94 and the fourth plow leg 96 can correspond to the right seed-metering device 4.

[0165] Specifically, the first lifting cylinder 921 and the second lifting cylinder 911 in the present invention both adopt common equipment in the prior art, and their structures are not the inventive point of the present invention, so they are not described in detail.

[0166] Further preferably, the utility model can also be provided with a drive motor on each traveling wheel 16, and the driving motor adopts the transmission method commonly used in the prior art to drive the traveling wheel 16 to rotate, thereby driving the entire multifunctional self-propelled double-row bean planter to move forward or backward; the specific connection method between the drive motor and the traveling wheel 16 can adopt conventional means in the prior art, and is not the invention point of the utility model, so it will not be repeated.

[0167] The working principle of the utility model is:

[0168] Before planting, first fill the seed box 34 and medicine box 35;

[0169] When working, a tractor is used in front of the multifunctional self-propelled double-row bean planter to tow and move, or a driving motor is arranged on each traveling wheel 16, and the driving motor drives the traveling wheel 16 to rotate, thereby driving the entire multifunctional self-propelled double-row bean planter to move forward or backward;

[0170] When the multifunctional self-propelled double-row bean planter moves to the position to be sown, the first lifting cylinder 921 and the second lifting cylinder 911 are first started, and the first lifting seat 92 and the second lifting seat are driven to descend by the descending of the cylinder rod, thereby driving the first plow leg 95, the second plow leg 94, the third plow leg 97 and the fourth plow leg 96 to descend, and during the walking process of the multifunctional self-propelled double-row bean planter, a furrow to be cultivated can be opened in front;

[0171] Then, the transmission motor 7 is started to rotate the output shaft of the transmission motor 7, thereby driving the second rotating gear 72 to rotate, and the outer gear on the second rotating gear 72 is meshed with the inner gear on the transmission belt 71, and the outer gear on the first rotating gear 83 is meshed with the inner gear on the transmission belt 71, thereby driving the first rotating gear 83 to rotate, and the seed metering device rotating shaft 82 is driven to rotate by the rotation of the first rotating gear 83, and the sieve plate rotating shaft 52 and the second rotating bottom plate 42 are driven to rotate by the rotation of the seed metering device rotating shaft 82, thereby realizing the rotation of the seed metering device 4;

[0172] Then, the manual valve on the first feeding pipe 351 (or the second feeding pipe 341) is opened, and the seeds in the seed box 34 (or the medicine in the medicine box 35) immediately fall into the seed metering device 4 through the first feeding pipe 351 (or the second feeding pipe 341), and then the seeds first fall into the top of the second rotating bottom plate 42, and due to the conical structure of the second rotating bottom plate 42 and the centrifugal force during the rotation of the seed metering device 4, the seeds immediately fall into the annular gap formed between the second rotating bottom plate 42 and the first rotating bottom plate 41;

[0173] In order to avoid overlapping and entanglement of seeds (or drugs) during the falling process, during the rotation of the seed disc, the seeds will first fall from the second arc-shaped gap or enter the third arc-shaped gap 47 through the inclined gap between the second baffle 412 and the second rotating bottom plate 42, thereby forming an intermittent falling method, and then the falling seeds pass through the sieve holes 54 on the seed sieve disc and enter the arc-shaped long holes 62, and fall to the bottom of the seed metering device 4 through the arc-shaped long holes 62, so that the seeds can accurately fall into the grooves plowed by the plow leg lifting mechanism of the seeder. The seed falling speed can also be controlled to avoid seed bouncing and achieve accurate seed delivery.

[0174] The utility model can realize the multi-functions of sowing and fertilizing, deepening soil tillage, automatic walking and the like.

[0175] During the sowing process, the seeds will be accurately placed. After the seeds in the seed meter 4 fall, they will be sent to the grooves opened by the plow leg lifting mechanism according to the set spacing and depth requirements.

[0176] The utility model belongs to a precision multi-crop adjustment seeder, which can realize accurate sowing amount, plant spacing and depth for sowing, and has the advantages of saving seeds, eliminating the need for thinning operations after seedling emergence, and making the nutritional area of ​​each crop uniform.

[0177] In general, the utility model realizes accurate seed placement by setting the seed box 34, the medicine box 35, the first feeding pipe 351, the second feeding pipe 341, the seed arrangement and placement mechanism, the plow leg lifting mechanism and the synchronous belt power transmission mechanism. The utility model has an efficient, fast and accurate sowing effect, greatly improves the production efficiency and quality of crops, and brings more convenience and benefits to agricultural production.

[0178] The utility model can complete the actions of sowing and fertilizing at one time, and can also adjust the depth of cultivated land according to different environments and different seed materials, and perform digging and covering operations. The utility model has high operation efficiency and provides technical support for the structural improvement and operation performance optimization of self-propelled agricultural seeders.

[0179] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A multifunctional self-propelled double-row bean seeder, characterized in that: It includes a chassis frame, a plow leg lifting mechanism, two seed rowing and seed placement mechanisms and a synchronous belt power transmission mechanism; The chassis frame is a rectangular frame structure, and includes a first front bracket and a first rear bracket extending left and right in the horizontal direction, and a first left bracket and a first right bracket extending front and back in the horizontal direction; the first front bracket is located in front of the first rear bracket, and the first left bracket is located on the left side of the first right bracket; The chassis frame is formed by interconnecting a first front bracket, a first rear bracket, a first left bracket and a first right bracket; The four corners at the bottom of the chassis frame are all provided with inverted U-shaped wheel brackets; the bottom of the wheel brackets are provided with running wheels; A first storage box is provided at the rear side of the top end of the chassis frame, and a rectangular second support frame is provided above the first storage box; The bottom end of the second support frame is connected to the top end of the chassis frame through a vertical connecting rod; A seed box and a medicine box are mounted on the top of the second support frame; the medicine box is located on the left side of the seed box; A seeding mechanism fixing frame is also provided in the middle of the chassis frame. The seeding mechanism fixing frame is arranged in front of the second reinforcing bracket, and the seeding mechanism fixing frame extends left and right in the horizontal direction. The left end of the seeding mechanism fixing frame is fixedly connected to the first left bracket, and the right end of the seeding mechanism fixing frame is fixedly connected to the first right bracket. Two seeding and placing mechanisms are arranged on the top of the seeding mechanism fixing frame; The left seed placement mechanism corresponds to the left and right positions of the medicine box, and the right seed placement mechanism corresponds to the left and right positions of the seed box; A first discharge port is provided at the bottom of the medicine box, and the first discharge port is connected to a first discharge pipe. A second discharge port is provided at the bottom of the seed box, and the second discharge port is connected to a second discharge pipe. Both the first discharge pipe and the second discharge pipe extend downwardly in a front-to-back direction. The bottom opening of the first discharge pipe is located above the left seed placement mechanism, and the bottom opening of the second discharge pipe is located above the right seed placement mechanism. Both seeding and placing mechanisms include a seeding device; the diameter of the seeding device is greater than the front-to-back width of the seeding mechanism fixing frame; The two seeding mechanisms also include a seeding device support block and a seeding device rotating shaft arranged below the seeding device; The seed metering device can be rotated relative to the seed metering mechanism fixing frame through the seed metering device rotating shaft; The synchronous belt power transmission mechanism includes a transmission motor and a transmission belt, and the transmission motor is fixedly arranged at the front end of the seeding mechanism fixing frame; The synchronous belt power transmission mechanism can drive the rotating shaft of the seed metering device to rotate relative to the seed metering mechanism fixing frame; The plow leg lifting mechanism is located at the front side of the seeding mechanism fixing frame; the plow leg lifting mechanism comprises a first lifting seat, a second lifting seat, a first horizontal connecting rod, a first plow leg, and a second plow leg; The plow leg lifting mechanism can plow double-row furrows on the forward route of the multifunctional self-propelled double-row bean seeder, and seeds can be sent into the furrows plowed by the plow leg lifting mechanism for sowing through two seeding devices arranged side by side.

2. The multifunctional self-propelled double-row bean seeder according to claim 1, characterized in that: Each inverted U-shaped wheel bracket includes a horizontally arranged fixing surface and two vertical support plates fixedly connected to the bottom end of the fixing surface; the running wheel is arranged between the two vertical support plates, and the running wheel is rotatably connected to the two vertical support plates.

3. The multifunctional self-propelled double-row bean seeder according to claim 1, characterized in that: The vertical distances between the two seed placement mechanisms and the chassis frame are smaller than the vertical distance between the seed box or the medicine box and the chassis frame.

4. The multifunctional self-propelled double-row bean seeder according to claim 1, characterized in that: Manual valves are provided on the first material discharge pipeline and the second material discharge pipeline.

5. The multifunctional self-propelled double-row bean seeder according to claim 1, characterized in that: Each seed meter includes a seed metering disc, a seed screening disc, and a circular seed retaining ring; The top of the seeding disc is open, and the seeding disc includes a first annular rotating bottom plate and a conical second rotating bottom plate. The conical second rotating bottom plate is a conical structure that is thick in the middle and gradually becomes thinner toward the outer circumference, so that the seeds falling into the second rotating bottom plate can fall from the outer circumference of the second rotating bottom plate. The middle of the annular first rotating bottom plate is a circular material discharge channel, and the conical second rotating bottom plate is arranged at the material discharge channel in the middle of the annular first rotating bottom plate, and the diameter of the second rotating bottom plate is smaller than the outer diameter of the material discharge channel, that is, a circular gap for seeds to fall is formed between the second rotating bottom plate and the first rotating bottom plate; A circular vertical side wall is provided at the top outer peripheral edge of the circular first rotating bottom plate; a plurality of first connecting strips are provided at the edge of the top end of the second rotating bottom plate, and the second rotating bottom plate is connected to the circular vertical side wall through the first connecting strips; A downwardly bent arc ramp is also provided on the inner side of the annular vertical side wall near the second rotating bottom plate, the top of the arc ramp is connected to the inner side of the vertical side wall, and the bottom of the arc ramp is connected to the inner edge of the first rotating bottom plate near the second rotating bottom plate.

6. The multifunctional self-propelled double-row bean seeder according to claim 1, characterized in that: The seeding disc is also provided with a first stopper and a second stopper, wherein the first stopper is an arc-shaped block structure; the second stopper is an arc-shaped sheet structure; The first stopper and the second stopper are both arranged above the annular gap between the second rotating bottom plate and the first rotating bottom plate for seeds to fall; A connecting protrusion is provided on one side of the first stopper close to the annular vertical side wall, and a connecting notch is provided at a position of the arc-shaped ramp close to the first arc-shaped gap, and the connecting protrusion on the first stopper can be embedded in the connecting notch and detachably connected to the connecting notch; A connecting piece is provided on one side of the second blocking piece close to the annular vertical side wall, and the second blocking piece is detachably connected to the annular vertical side wall via the connecting piece.

7. The multifunctional self-propelled double-row bean seeder according to claim 1, characterized in that: The seed screen plate is arranged at the bottom end of the seed plate, and the seed retaining ring is arranged at the bottom end of the seed screen plate; The seed sieve plate comprises an annular sieve ring and a circular sieve plate rotating shaft; the outer diameter of the sieve ring is smaller than the inner diameter of the first rotating bottom plate, and the inner diameter of the sieve ring is larger than the outer diameter of the second rotating bottom plate; The middle of the annular sieve ring is a rotating gap, the diameter of the sieve plate rotating shaft is smaller than the diameter of the sieve ring rotating gap, the sieve plate rotating shaft is arranged at the rotating gap in the middle of the sieve ring, and the sieve plate rotating shaft is connected to the sieve ring through a plurality of second connecting bars; The sieve ring is provided with two circles of sieve holes opened according to the seed size; A rotating clamping groove is also provided at the top of the rotating shaft of the sieve plate, and a rotating clamping protrusion is also provided at the bottom end of the second rotating bottom plate at a position corresponding to the rotating clamping groove, and the rotating clamping protrusion can be embedded in the rotating clamping groove; The seed retaining ring includes an inner ring and an outer ring arranged at the bottom end of the inner ring, the inner diameter of the outer ring is consistent with the inner diameter of the inner ring; the outer diameter of the outer ring is greater than the outer diameter of the sieve ring, and the outer diameter of the outer ring is consistent with the outer diameter of the first rotating bottom plate; the outer diameter of the inner ring is consistent with the outer diameter of the sieve ring; An arc-shaped long hole is arranged on the inner ring of the seed retaining ring, and the arc-shaped long hole passes through the inner ring and the outer ring downward in sequence; the arc-shaped long hole corresponds to the positions of several sieve holes, and the arc-shaped long hole corresponds to the upper and lower positions of the third arc-shaped gap.

8. The multifunctional self-propelled double-row bean seeder according to claim 1, characterized in that: The two seeding device support blocks are fixedly arranged on the top of the seeding mechanism fixed frame, the two seeding devices are respectively located above the two seeding device support blocks, and the two seeding devices are rotatably connected to the two seeding device support blocks through two seeding device rotating shafts; A rotating through hole is also provided at the center of the rotating shaft of the sieve plate, and a rotating groove is provided at the rotating clamping protrusion at the bottom end of the second rotating bottom plate corresponding to the position of the rotating through hole at the center of the rotating shaft of the sieve plate; the top end of the rotating shaft of the seed meter passes through the rotating through hole in the middle of the rotating shaft of the sieve plate, and penetrates into the rotating groove at the bottom end of the second rotating bottom plate, and is fixedly connected with the rotating shaft of the sieve plate and the second rotating bottom plate; A first rotating gear is also fixedly provided on the rotating shaft of the seed metering device; The output shaft of the transmission motor extends upward, a second rotating gear is fixedly provided at the top end of the output shaft of the transmission motor, an inner gear is provided at one side of the transmission belt, and both the first rotating gear and the second rotating gear are provided with outer gear teeth; The transmission belt is sleeved on the outer circumference of the first rotating gear and the second rotating gear, and the internal gear teeth on the transmission belt are meshed with the gear teeth of the first rotating gear and the second rotating gear, so as to realize the transmission connection between the transmission belt and the first rotating gear and the second rotating gear; By starting the transmission motor, the output shaft of the transmission motor rotates, thereby driving the second rotating gear to rotate, and the meshing of the external gear on the second rotating gear with the internal gear on the transmission belt, and the meshing of the external gear on the first rotating gear with the internal gear on the transmission belt, thereby driving the first rotating gear to rotate, and the rotation of the first rotating gear drives the seed metering device rotating shaft to rotate, and the rotation of the seed metering device rotating shaft drives the sieve plate rotating shaft and the second rotating bottom plate to rotate, thereby realizing the rotation of the seed metering device.

9. The multifunctional self-propelled double-row bean seeder according to claim 1, characterized in that: The first lifting seat and the second lifting seat both extend in the vertical direction, the first lifting seat is located on a side close to the first left bracket, and the second lifting seat is located on a side close to the first right bracket; the first horizontal connecting rod extends left and right in the horizontal direction; the left end of the first horizontal connecting rod is connected to the right end of the first lifting seat, and the right end of the first horizontal connecting rod is connected to the left end of the second lifting seat; The first plow leg and the second plow leg are both arranged at the bottom end of the first horizontal connecting rod, and the first plow leg and the second plow leg both extend in the vertical direction, and the first plow leg is close to the connection between the left end of the first horizontal connecting rod and the first lifting seat, and the second plow leg is close to the connection between the right end of the first horizontal connecting rod and the second lifting seat.

10. The multifunctional self-propelled double-row bean seeder according to claim 1, characterized in that: The plow leg lifting mechanism also includes a third plow leg, a fourth plow leg, a first extension rod, a second extension rod and a second horizontal connecting rod; The first extension rod and the second extension rod both extend forward and backward in the horizontal direction, and the third plow leg and the fourth plow leg both extend in the vertical direction; the front end of the first extension rod is connected to the middle of the first plow leg, the top end of the third plow leg is connected to the rear end of the first extension rod, the front end of the second extension rod is connected to the middle of the second plow leg, and the top end of the fourth plow leg is connected to the rear end of the second extension rod; The second horizontal connecting rod extends left and right in the horizontal direction; the left end of the second horizontal connecting rod is connected to the middle part of the first extension rod, and the right end of the second horizontal connecting rod is connected to the middle part of the second extension rod; The top of the first lifting seat and the top of the second lifting seat are both provided with lifting structures; the lifting structure at the top of the first lifting seat is a first lifting cylinder, and the lifting structure at the top of the second lifting seat is a second lifting cylinder; The first lifting cylinder is fixed on the right side of the first left bracket, and the second lifting cylinder is fixed on the left side of the first right bracket; the cylinder rod of the first lifting cylinder and the cylinder rod of the second lifting cylinder both extend downward; the cylinder rod of the first lifting cylinder is connected to the top of the first lifting seat, and the cylinder rod of the second lifting cylinder is connected to the top of the second lifting seat.

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