CN110506473B

CN110506473B - Transmission mechanism, seeding device and seeding method

Info

Publication number: CN110506473B
Application number: CN201910761458.1A
Authority: CN
Inventors: 孙同梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-18
Filing date: 2019-08-18
Publication date: 2024-03-29
Anticipated expiration: 2039-08-18
Also published as: CN110506473A

Abstract

The utility model relates to a transmission mechanism, a seeding device and a seeding method, and belongs to the technical field of agricultural mechanical equipment. The device comprises an intermittent driving mechanism, wherein the intermittent driving mechanism comprises a driving part and a driven part driven by the driving part; the driving part comprises a driving shaft, the driven part comprises a driven shaft, a driving wheel is arranged at one end of the driving shaft, a cam is arranged on the driving wheel, and a driven wheel arranged on the driven shaft is matched with one side of the driving wheel; the driven shaft is composed of a fixed half shaft and a movable half shaft which are mutually independent and have coincident axes; the driven wheel is arranged on the fixed half shaft; the movable half shaft is movably supported by the limiting plate and can axially move relative to the limiting plate, and a baffle and a spring are arranged on the movable half shaft; one side surface of the baffle is attached to the cam. According to the utility model, the cam is adopted to drive the push rod to intermittently press on the baffle plate, so that the baffle plate stops rotating, and the movable half shaft is driven to rapidly stop, thereby realizing accurate discharging and stopping discharging of seeds or fertilizer.

Description

Transmission mechanism, seeding device and seeding method

Technical Field

The utility model relates to the technical field of agricultural mechanical equipment, in particular to a transmission mechanism, a seeding device and a seeding method.

Background

The seeder is used for uniformly seeding crop seeds into seed furrows with a certain depth according to a certain seeding amount or plant hole distance, covering with a proper amount of fine wet soil and properly compacting, so as to provide good conditions for germination of the seeds, thereby achieving the purposes of high yield, stability, improvement of labor productivity of seeding operation and reduction of labor intensity of users.

The existing seeder mainly comprises a main frame, travelling wheels, a ditching device, a seed metering device, a transmission mechanism, a soil covering and compacting device and the like, and is used for continuously seeding or fertilizing, so that the stacking density of seeding or fertilizing along the arrangement direction is high, seeds are wasted, and the arrangement of plants is easy to cause too close, and ventilation is influenced.

The patent of application number 2015200360685, the publication day of this patent is 2015 6 month 24 days, it discloses a novel corn drill, which comprises a frame, seed bucket, transmission, seed discharging device, ditching earthing device, be fixed with the handle in the frame, seed bucket installs in the frame, seed dish is installed to seed bucket lower part, the seeding pipe is relative with the seed hole on the seed dish, the lower extreme of seeding pipe is fixed with ditching plow and earthing plow, transmission includes sprocket and chain, worm wheel and worm, intermittent gear and gear wheel, the wheel passes through transmission with power transmission for the kind sprocket, drive the scraper blade motion by kind sprocket to drive seed motion. The technical scheme disclosed by the utility model has the beneficial effects that the sowing distance is uniform, the sowing is not easy to multicast, the waste of seeds is not easy to cause, the growth of corn is facilitated, and the like.

However, the technical scheme disclosed by the utility model has the following defects: when the intermittent gear is disengaged from the large gear, the large gear and a mechanism driven by the large gear are still in a free state, and tend to still act under the action of inertia, so that intermittent seed sowing and sporadic seed sowing are caused, and grown plants are still continuously arranged, so that the problems of too dense plant arrangement and influence on ventilation are not well solved by the technical scheme.

Disclosure of Invention

1. Problems to be solved

Aiming at the problems that in the prior art, the spacing adjustment effect of sowing or fertilizing is unstable and sporadic sowing is easy to occur, the utility model provides a transmission mechanism, a sowing device and a sowing method. The device adopts a cam axial driving mode to realize intermittent power transmission, and utilizes the friction force between the cam and the baffle plate to realize quick start and stop of the transmission process, thereby realizing accurate intermittent seed sowing, avoiding scattered seed sowing and saving seeds.

2. Technical proposal

In order to solve the problems, the utility model adopts the following technical scheme.

A transmission mechanism is an intermittent driving mechanism and comprises a base plate, a driving part and a driven part driven by the driving part; the driving part comprises a driving shaft, the driven part comprises a driven shaft, and the driving shaft and the driven shaft are both arranged on the substrate; a driving wheel is arranged at one end of the driving shaft and is meshed with a driven wheel arranged on the driven shaft, and a cam is arranged at one side of the driving wheel;

the driven shaft is composed of a fixed half shaft and a movable half shaft which are mutually independent and are overlapped in axis; one end of the movable half shaft is connected with one end of the fixed half shaft;

the driven wheel is arranged on the fixed half shaft;

the movable half shaft penetrates through the limiting plate and is limited by the limiting plate, and the movable half shaft can axially move relative to the limiting plate;

the movable half shaft is provided with a baffle and a spring; the baffle is positioned on one side of the cam, which is far away from the base plate, and the baffle is contacted with one end surface of the cam, which is close to the baffle; the spring is positioned between the baffle plate and the limiting plate;

the cam drives the baffle plate, the baffle plate extrudes the spring, and the baffle plate drives the movable half shaft to reciprocate relative to the fixed half shaft under the double functions of the baffle plate and the spring.

Preferably, the cam is an end cam;

the baffle contacts with the cam through the push rod; the cam pushes the push rod to move, and the push rod pushes the baffle plate to enable the baffle plate to reciprocate relative to the fixed half shaft.

Preferably, a roller is arranged at the contact part of the push rod and the cam, so that the push rod is in rolling contact with the cam; the cam pushes the push rod through the roller.

Preferably, the push rod is U-shaped, and the U-shaped push rod is sleeved outside the movable half shaft.

Preferably, the end parts of the fixed half shaft and the movable half shaft, which are connected, are mutually meshed through a tooth structure to realize connection.

Preferably, the tooth structure on the fixed half shaft is teeth inclined along the circumferential direction, and the inclination direction of the teeth is opposite to the rotation direction of the fixed half shaft; adaptively, the tooth structure inclination direction of the movable half shaft is the same as the rotation direction of the fixed half shaft.

Preferably, the driven parts are provided with two sets in total and are respectively and correspondingly positioned at two opposite sides of the driving part;

the free end of the movable half shaft is provided with a stirring wheel, and the periphery of the stirring wheel is provided with a plurality of stirring sheets extending along the radial direction of the stirring wheel.

A seeding device adopts the transmission mechanism.

The sowing method adopts the sowing device and comprises the following steps:

s1, pushing a movable half shaft: the driving wheel drives the driven wheel on one side of the driving wheel to rotate, the cam driven by the driving wheel rotates, and the cam pushes the baffle plate and the movable half shaft to move to one side far away from the cam;

s2, stall of the movable half shaft: the cam is pressed on the baffle plate, so that a spring between the limiting plate and the baffle plate is compressed, the movable half shaft is separated from the fixed half shaft, and the movable half shaft stalls;

s3, stopping seeding and stopping: after the movable half shaft stalls, a cylindrical structure arranged on the movable half shaft plugs the material above a position where the cylindrical structure is used as a transferring center, and the blanking is stopped:

s4, the speed of the movable half shaft is: after the pressure between the cam and the push rod is unloaded, under the reset action of the spring, the baffle plate pushed by the spring moves to one side close to the base plate, and a movable half shaft fixedly connected with the baffle plate moves together, and after the movable half shaft contacts with the fixed half shaft at the side, the fixed half shaft drives the movable half shaft to rotate;

s5, continuing sowing: after the speed of the movable half shaft is obtained, the cylindrical structure at the side is driven to reset, and the materials accumulated in the material conveying channel continuously pass through and fall into the furrow to realize sowing;

s6, repeated interval sowing: repeating the steps to realize alternate sowing in the same furrow.

In the sowing method, two sets of driven wheel transmission systems are arranged and are respectively positioned at two sides of a driving wheel; the operation steps are as follows:

s1, pushing a first side movable half shaft: the driving wheel simultaneously drives driven wheels respectively positioned at two sides of the driving wheel to rotate, the cam driven by the driving wheel rotates, the cam pushes the push rod at the first side to move to the side far away from the cam, and the push rod is gradually pressed on the baffle plate in the moving process of the push rod, so that the baffle plate drives the movable semi-axis to move to the side far away from the cam;

s2, stall of the first side movable half shaft: the push rod is pressed on the baffle plate, the push rod presses the baffle plate to a rotation stopping state by utilizing the gradually increased friction force between the push rod and the baffle plate, simultaneously compresses a spring between the limiting plate and the baffle plate, and the movable half shaft is separated from the fixed half shaft and is pulled to the rotation stopping state by the baffle plate;

s3, stopping seeding at the first side: after the first side movable half shaft stalls, a stirring wheel arranged on the movable half shaft stops rotating, and materials in the side material box are accumulated above a position taking the stirring wheel as a transferring center, so that blanking is stopped:

s4, second side movable half shaft speed obtaining: after the pressure between the cam and the push rod at the second side is unloaded, under the reset action of the spring at the second side, the spring pushes the baffle plate at the second side to move to one side close to the base plate, and a second side movable half shaft fixedly connected with the baffle plate moves together, and after the movable half shaft at the second side is contacted with the fixed half shaft at the second side, the fixed half shaft drives the movable half shaft to rotate;

s5, the second side continues sowing: after the movable half shaft at the second side is driven to get speed, driving a material stirring wheel at the second side to rotate, and enabling the material piled in the material conveying channel to pass through the material stirring wheel and fall into the furrow so as to realize sowing; in the process, only one side of the material conveying channels is always used for discharging, and the material conveying channels are respectively positioned at two sides of the driving shaft;

s6, repeatedly and alternately sowing at intervals: repeating the steps to realize that only one side of each of the two adjacent furrows is always sowed, the other side is suspended, and then the two furrows alternate; the resulting discharge location appears to be "delta-shaped".

3. Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

(1) The utility model adopts the cam to drive the baffle to intermittently move away from or approach to the fixed half shaft, so as to realize the meshing and the separation of the movable half shaft and the fixed half shaft. In the process, the movable half shaft moves axially, the stirring wheel moves away from the material conveying channel, a cylindrical structure on the movable half shaft, which is positioned on one side of the stirring wheel close to the base plate, is used for replacing the stirring wheel to seal the material discharging opening, so that the effects of intermittent seed discharging or fertilizer discharging and stopping discharging are realized, material resources are saved, and spaced planting is ensured.

(2) According to the utility model, the cam is adopted to drive the push rod to intermittently press on the baffle plate, so that the baffle plate intermittently moves axially, and the movable half shaft is further pushed to move axially, so that the engagement and disengagement of the movable half shaft and the fixed half shaft are realized. In the process, the push rod is pressed on the rotating baffle plate, so that the baffle plate stops rotating and drives the movable half shaft to be rapidly stationary, thereby realizing the effects of intermittent seed feeding or fertilizer feeding and stopping feeding in the process of intermittent seed feeding or fertilizer feeding, saving material resources and ensuring spaced planting.

(3) According to the utility model, the helical gear structure is adopted as the connecting structure of the fixed half shaft and the movable half shaft, and when the fixed half shaft starts to contact with or separate from the movable half shaft, the inclined direction of the tooth structure is opposite to the rotation direction of the movable half shaft driven by the fixed half shaft, so that the initial contact process or the separation process is smoother, and the situation that tooth tips between the two parts are mutually impacted is difficult to occur.

(4) The driving shaft can be driven by agricultural machinery in a chain transmission or gear transmission mode, the torque of a power source is large, when the size of a feed box is long, a plurality of stirring wheels (such as a rotating wheel with a 'rice-shaped' stirring piece) can be sequentially arranged on the same movable half shaft, the larger torque can meet the use requirement of the structure, the effect of one-time multi-ridge fertilization or seed sowing is achieved, the planting distance in adjacent furrows is determined in advance by the mechanical size, and the handle control effect of a planting mode is good.

(5) According to the seeder, the two driven wheels are intermittently driven by the driving wheel to rotate, so that the materials in the two feed boxes are sequentially and intermittently released, the seeding can be performed according to the inverted-Y-shaped arrangement structure, the field ventilation performance is good, the plant growth is more stable, the plant diseases and insect pests are less prone to occurrence, and the requirements of the current mainstream planting mode (seed feeding and plant cultivation in inverted-Y-shaped mode) are met.

(6) The utility model can also be used for fertilization. At present, as soil hardening is serious, a plurality of agricultural areas are used for pushing chemical fertilizers and bacterial fertilizers comprehensively, and the soil hardening condition caused by single application of the chemical fertilizers is improved by using the bacterial fertilizers and other fertilizers.

Drawings

FIG. 1 is a perspective view from one side of the present utility model;

FIG. 2 is a perspective view of the other side of the present utility model;

FIG. 3 is a top view of the present utility model;

FIG. 4 is a schematic illustration of the mating relationship of a fixed half shaft and a movable half shaft of the present utility model;

FIG. 5 is a schematic diagram showing the matching relationship between the feeding channel and the discharging tray of the present utility model;

fig. 6 is a side view of the blanking tray of the present utility model.

In the figure:

1. an active part; 2. a driven part; 3. a driving shaft; 4. a driven shaft; 5. a driving wheel; 6. a cam; 7. driven wheel; 71. fixing a half shaft; 72. a movable half shaft;

8. a limiting plate; 9. a baffle; 10. a spring; 11. a substrate; 12. a support; 13. a push rod; 14. a roller; 15. a tooth structure;

16. a stirring wheel; 161. a pulling piece;

17. a feed box; 171. a material hole;

18. a material conveying channel; 19. a bearing seat; 20. a sprocket; 21. a cylindrical structure; 22. a blanking disc; 23. and a blanking pipeline.

Detailed Description

The utility model is further described with reference to the following examples in order to facilitate the understanding of the technical means, the creation characteristics, the achievement of the objects and the effects achieved by the utility model.

Example 1

As shown in fig. 1 to 3, a transmission mechanism includes a base plate 11 and an intermittent drive mechanism including a driving portion 1 and a driven portion 2 driven by the driving portion 1. Specifically, the driving part 1 includes a driving shaft 3, and the driven part 2 includes a driven shaft 4. Two bearing seats 19 are installed on the base plate 11, and the driving shaft 3 and the driven shaft 4 respectively pass through the corresponding bearing seats 19 and are respectively supported by the bearing seats 19 in a rolling manner.

A driving wheel 5 is mounted at one end of the driving shaft 3, a cam 6 is arranged on the driving wheel 5, and the end face cam of the cam 6 can intermittently and smoothly push the driven part 2 to act. One side of the driving wheel 5 is matched with a driven wheel 7 arranged on the driven shaft 4, and in the embodiment, the driving wheel 5 is meshed with the driven wheel 7 in a gear matching mode for transmission.

The driven shaft 4 is composed of a fixed half shaft 71 and a movable half shaft 72 which are mutually independent, and the axes of the fixed half shaft 71 and the movable half shaft 72 are mutually overlapped and have the same diameter so as to realize the normal driving of the fixed half shaft 71 to the movable half shaft 71. The fixed axle shaft 71 passes through the bearing seat 19 on the base plate 11 and can only rotate relative to the base plate 11, but cannot axially move. One end of the movable half shaft is meshed with one end of the fixed half shaft 71 through a tooth structure 15. The driven wheel 7 is fixedly sleeved on the fixed half shaft 71, and when the driven wheel 7 is used, the driving wheel 5 drives the fixed half shaft 71 to continuously rotate by virtue of the driven wheel 7. In this embodiment, the functions of the support plate for supporting the movable half shaft 72 and the limiting plate 8 for limiting the movable half shaft 72 are intensively realized by the limiting plate 8, that is, the limiting plate 8 is supported while limiting, and when supporting, the limiting plate 8 is required to be provided with a through hole for facilitating the penetration of the movable half shaft 71, and a linear bearing is installed in the through hole, and the inner diameter of the linear bearing is adapted to the inner diameter of the movable half shaft 71. In the case that the movable half shaft 72 can axially move relative to the limiting plate 8, the movable half shaft 72 is provided with a baffle plate 9 and a spring 10, and the baffle plate 9 is stably installed on the movable half shaft 72 in a detachable mode or an integrated forming mode and serves as a specific part for controlling the action of the spring 10 and the cam to control the movable half shaft 72. To realize the control of the cam 6 on the movable half shaft 72, in this embodiment, a side surface of the baffle plate 9 is attached to the cam 6, so that the baffle plate 9 is driven by the cam 6 to periodically reciprocate, the spring 10 is located between the baffle plate 9 and the limiting plate 8, and in the reciprocating motion process of the baffle plate, the limiting plate 8 fixedly connected with the fixed half shaft 71 is driven to move by reciprocally extruding the spring 10, so that the purpose of controlling the combination and separation of the movable half shaft 72 and the fixed half shaft 71 is realized.

In order to improve the power transmission effect of the fixed half shaft 71 and the movable half shaft 72, the following technical scheme is further adopted in this embodiment:

under the natural extension state of the spring 10, the cam 6 drives the baffle plate 9 to press the spring 10, and the spring 10 pushes the movable half shaft 72 to be in close fit with the fixed half shaft 71 based on the limiting plate 8.

Further, as shown in fig. 4, the fixed axle shaft 71 and the movable axle shaft 72 are meshed with each other by adopting a tooth structure 15 at each end, and in this embodiment, the number of teeth is 7, and the diameter of the tooth structure 15 is 25mm.

In order to avoid excessive impact on the tooth top structures of the two parts in relative rotation contact moment, the technical content of the embodiment is that the tooth structures 15 on the fixed half shaft 71 are arranged as teeth inclined along the circumferential direction, and the inclination direction of the teeth is opposite to the rotation direction of the fixed half shaft 71; suitably, the tooth structure 15 of the movable half shaft 72 is inclined in the same direction as the rotation direction of the fixed half shaft 71. Because the fixed half shaft is used as the driving part, when the fixed half shaft 71 is contacted with the movable half shaft 72, the inclined surfaces of the tooth structures 15 on the two parts are contacted with each other, and the impact force of the mutual contact of the two inclined surfaces with larger inclination angles along the axis is greatly reduced relative to the contact impact of the tooth side surfaces with smaller inclination angles along the axis, thereby being beneficial to avoiding equipment damage and ensuring that the equipment has a smoother state and longer service life in the use process. One side of the tooth structure 15 is inclined at 50 ° to the axis of the tooth structure 15 and the other side is inclined at 15 ° to the axis of the tooth structure 15. Too small inclination angle of the tooth structure 15 causes the impact between tooth tips to be increased within the rotating speed range of the existing seed sowing machine material stirring wheel; otherwise, the phenomenon that the power transmission is insufficient due to overlarge inclination angle is caused, and the movable half shaft and the fixed half shaft are easy to slip is caused.

A magazine 17 is mounted on the substrate as a structure to be matched with the intermittent drive mechanism. The feed box 17 is arranged above the intermittent driving mechanism, a feed hole 171 is arranged at the bottom of the feed box 17, the feed hole 171 is arranged above the stirring wheel 16, and a feed channel 18 is connected below the feed hole 171 and used for conveying materials in the feed box 17 to the rear of a plow externally connected below. Specifically, the other end of the movable half shaft 72 is provided with a stirring wheel 16, the periphery of the stirring wheel 16 is provided with a plurality of stirring sheets 161 extending along the radial direction of the stirring wheel 16, so that the stirring wheel 16 has a side view similar to a Chinese character 'mi', and one side of the stirring wheel 16, which is close to the base plate 11, is provided with a cylindrical structure with the diameter identical to that of the stirring wheel 16. The movable half shaft 72 passes through the material conveying channel 18, and the material stirring wheel 16 is positioned in the material conveying channel 18 and is used for rotating stirring materials. When the material stirring wheel 16 does not rotate, materials are accumulated between two adjacent stirring sheets 161 to form short-term accumulation, and when the material stirring wheel 16 axially moves relative to the material conveying channel, the materials can be accumulated at the cylindrical structure after the cylindrical structure replaces the position of the material stirring wheel 16.

In operation, the driving wheel 1 rotates, driving the fixed half shaft with the driven wheel 2 to rotate 71. The cam 6 on the driving wheel 1 drives the baffle plate 9, so that the baffle plate 9 rapidly compresses the spring 10, the movable half shaft 72 is separated from the fixed half shaft 71, the movable half shaft 72 axially moves, the cylindrical structure is used for blocking the material conveying channel 18, and the intermittent stage is ensured to be used for sowing or discharging fertilizer as little as possible.

A seeder adopts the transmission mechanism.

The apparatus mechanism of the planter further comprises: the intermittent drive mechanism top is equipped with workbin 17, the bottom of workbin 17 is equipped with the material hole 171, and the material hole 171 below is connected with the material conveying passageway 18, the driving wheel 16 is located the material conveying passageway 18 for rotate the driving.

A seeding method comprises the following steps:

s5, continuing sowing: after the speed of the movable half shaft is reached, the cylindrical structure is reset, and the materials accumulated in the material conveying channel are transferred and pass through and fall into the furrow, so that sowing is realized;

The parts not described in the utility model can be realized by adopting or referring to the prior art.

Example 2

On the basis that the basic technical scheme of the embodiment 1 remains unchanged, the driven part 2 is provided with two sets, and is respectively and correspondingly positioned at two opposite sides of the driving part 1. When the driving wheel 1 rotates, the driving wheel 1 can alternately drive the driven parts 2 at two sides to act respectively, and finally, the blanking process control of the driven parts on the two feed boxes is realized.

The support 12 has an L-shaped structure, i.e. includes the support in embodiment 1 (as a part of the support 12 in this embodiment) and a limiting plate (as two parts of the support 12 in this embodiment, and one part is perpendicular to the two parts), and the push rod 13 is hinged to the support 12 in this embodiment. Specifically, for the control of the movable half shaft 72, the following technical scheme is further adopted in this embodiment:

a supporting member 12 is installed on the base plate 11, one part of the supporting member 12 is vertically and fixedly connected with the base plate 11, and the other part of the supporting member is used as a limiting plate 8 for supporting and limiting the movable half shaft 72. A cylinder structure 21 is provided in the middle of the support 12, by means of which cylinder structure 21 the support 12 is articulated with the push rod 13. The push rod 13 is of a frame structure, the push rod 13 is sleeved on the outer side of the movable half shaft 72, the push rod 13 is located on one side, close to the fixed half shaft 71, of the baffle plate 9, and the upper portion and the lower portion of the push rod 13 are in contact with the baffle plate 9, so that the contact area of the push rod 13 on the baffle plate 9 is increased, and the pressing control effect on the baffle plate 9 is improved. One end of the push rod 13 near the cam extends to the side of the cam 6 near the spring 10, so that the cam 6 contacts and drives the push rod 13, the push rod 13 pushes the baffle 9 to act, and the push rod 13 rapidly presses the rotating baffle 9.

In order to reduce the friction between the push rod 13 and the cam 6, a roller 14 is provided at the end of the push rod 13 that contacts the cam 6.

For the application of the above mechanism:

when the fertilizer is applied, the fertilizer and the bacterial fertilizer need to be applied simultaneously, so that the fertilizer can be uniformly sown under the alternate intermittent conditions, the soil hardening caused by concentrated fertilizer is avoided, and the influence of uneven sowing of the bacterial fertilizer on the plant growth is also avoided.

When in planting, the planting patterns in two adjacent furrows can be completely staggered by adopting the alternate intermittent planting mode, so that the planting layout in the shape of a Chinese character 'pin' is finally realized, and the current planting requirement is met.

A seeding method comprises the following steps:

Example 3

On the basis that the basic technical scheme of the embodiment 1 is kept unchanged, the embodiment installs the chain wheel 20 on the fixed half shaft 71, arranges another set of driven parts on the base plate 11, uses the chain wheel 20 as a driving transmission piece to drive the other set of driven parts to move, and installs the feed box on the newly added other set of driven parts in a matched manner, thereby realizing the common fertilization or seeding of a plurality of sets of feed boxes. Specifically, in the embodiment, chemical fertilizers are placed in one set of feed boxes, and bacterial fertilizers are placed in the other set of feed boxes, so that even further fertilizer sowing is formed.

Of course, more driven parts and bins can be provided based on the above principle, including synchronous sowing of seeds with the bins.

Example 4

As shown in fig. 5, on the basis that the basic technical solution of embodiment 1 remains unchanged, in this embodiment, a ploughshare for ditching is fixedly installed at the lower part of the feed box 17, the lower end of the feed channel 18 extends to the rear side of the ploughshare, and a seeding tray 22 is movably connected to the lower end of the feed channel 18, specifically, the lower end of the feed channel 18 is movably sleeved on the side end surface of the seeding tray 22, so that the seeding tray 22 can rotate relative to the feed channel 18, but cannot axially move relative to the feed channel 18. Referring to fig. 6, the seeding tray 22 has a disc-shaped structure with a cavity, and seeding pipes 23 are uniformly distributed around the seeding tray 22 along the circumferential direction of the seeding tray, and the seeding pipes 23 are communicated with the cavity of the seeding tray 22.

In use, after the material in the material conveying channel 18 enters the sowing tray 22, the material is inserted into the soil ditch formed by the ploughshare through each sowing pipe 23 under the action of gravity. The seeding pipe 23 around the seeding tray 22 is contacted with soil, and in the running process of the device, the soil which moves relative to the seeding tray 22 pushes the seeding pipe 23 to rotate, so that the seeding is realized. Since the distance between the individual sowing tubes 23 is constant, the sowing pitch is relatively constant, which is advantageous for achieving standardized planting.

In addition, a belt wheel is arranged on the driving shaft and is connected with an engine power output part of the external agricultural vehicle and used for receiving and transmitting kinetic energy.

In the description of this patent, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "front," "rear," "clockwise," "counterclockwise," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the patent.

In this patent, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is to be limited to the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A transmission mechanism is an intermittent driving mechanism and comprises a base plate (11), a driving part (1) and a driven part (2) driven by the driving part (1); the driving part (1) comprises a driving shaft (3), the driven part (2) comprises a driven shaft (4), and the driving shaft (3) and the driven shaft (4) are both arranged on the substrate (11); one end of the driving shaft (3) is provided with a driving wheel (5), and is characterized in that:

the driving wheel (5) is meshed with a driven wheel (7) arranged on the driven shaft (4), and a cam (6) is arranged on one side of the driving wheel (5);

the driven shaft (4) is composed of a fixed half shaft (71) and a movable half shaft (72) which are mutually independent and are overlapped in axis; one end of the movable half shaft (72) is connected with one end of the fixed half shaft (71);

the driven wheel (7) is arranged on the fixed half shaft (71);

the movable half shaft (72) passes through the limiting plate (8) and is limited by the limiting plate (8), and the movable half shaft (72) can axially move relative to the limiting plate (8);

a baffle (9) and a spring (10) are arranged on the movable half shaft (72); the baffle (9) is positioned on one side of the cam (6) far away from the base plate (11), and the baffle (9) is contacted with one end face of the cam (6) close to the baffle (9); the spring (10) is positioned between the baffle (9) and the limiting plate (8);

the cam (6) drives the baffle (9), the baffle (9) extrudes the spring (10), and under the double functions of the baffle (9) and the spring (10), the baffle (9) drives the movable half shaft (72) to reciprocate relative to the fixed half shaft (71);

the cam (6) is an end cam;

the baffle (9) is contacted with the cam (6) through a push rod (13); the cam (6) pushes the push rod (13) to move, and the push rod (13) pushes the baffle plate (9) to enable the baffle plate (9) to reciprocate relative to the fixed half shaft (71);

the end parts of the fixed half shaft (71) and the movable half shaft (72) which are connected are mutually meshed through a tooth structure (15).

2. A transmission according to claim 1, wherein: a roller (14) is arranged at the contact position of the push rod (13) and the cam (6), so that the push rod (13) and the cam (6) are in rolling contact; the cam (6) pushes the push rod (13) through the roller (14).

3. A transmission according to claim 1, wherein: the push rod (13) is U-shaped, and the U-shaped push rod (13) is sleeved on the outer side of the movable half shaft (72).

4. A transmission according to claim 1, wherein: the tooth structure (15) on the fixed half shaft (71) is a tooth inclined along the circumferential direction, and the inclination direction of the tooth is opposite to the rotation direction of the fixed half shaft (71); suitably, the tooth structure (15) of the movable half shaft (72) is inclined in the same direction as the rotation direction of the fixed half shaft (71).

5. A transmission according to any one of claims 1-4, wherein: the driven parts (2) are provided with two sets, and are respectively and correspondingly positioned at two opposite sides of the driving part (1);

the free end of the movable half shaft (72) is provided with a stirring wheel (16), and the periphery of the stirring wheel (16) is provided with a plurality of stirring sheets (161) which are arranged along the radial extension of the stirring wheel (16).

6. A seeding apparatus, characterized in that: use of a transmission according to any one of claims 1-5.

7. A sowing method, characterized in that: the sowing device as claimed in claim 6, comprising the steps of:

8. A seeding method according to claim 7, wherein: the driven wheel transmission systems are arranged in two sets and are respectively positioned at two sides of the driving wheel; the operation steps are as follows: