CN207612596U - Cotton plots breeding precision planter - Google Patents

Abstract

The utility model discloses a precision seeder for cotton plot breeding, which comprises a seed selection and arrangement device, a monitoring and alarm device, a rolling hole opening seeding device, an identification positioning device, an upper frame and a lower frame, and the seed selection and arrangement device is installed on the On the frame, the rolling hole-opening sowing device is installed on the lower frame, and the identification positioning device is installed on the lower frame near the sowing duckbill of the rolling hole-opening sowing device. The seeding device is connected to the rolling hole seeding device through the seeding pipe, and the monitoring and alarming device is installed on the upper frame and detects the rotation of the seeding shaft of the seed selection device and the rotation of the seeding shaft through the feeding pipe. For the cotton seeds in the seed tube, the rolling hole-opening sowing device is driven and connected with the seeding rotating shaft of the seed selection and metering device through a transmission chain. The utility model can realize continuous opening of holes on the film, precise seeding, monitoring of seeding status, reminder and alarm of missed seeding, identification and positioning of missed seeding points, easy cleaning of seeds after seeding, and avoiding the mouth of the sowing duck from being soiled in the cotton breeding test plot. Blocking and other functions, so as to further improve the convenience, accuracy and reliability of cotton plot breeding and sowing experiments.

Description

Cotton plot breeding precision seeder

technical field

The utility model relates to the technical field of agricultural machinery manufacturing. More specifically, it relates to a precision seeder for cotton plot breeding.

Background technique

Field breeding test is a small-area test on a test plot for the purpose of cultivating new varieties. Compared with field sowing operations, it has special requirements. It not only requires uniform seeding distance, consistent sowing depth, and Seeds are in close contact with the soil, etc., and it is also required to sow a certain amount of different varieties of experimental seeds within the specified plot length, and they must not be mixed.

Cotton is an important economic crop in Xinjiang. With the gradual liberalization of the cotton market and the further deepening of the adjustment of the rural economic structure, the cotton production situation in Xinjiang has undergone major changes, and its cotton planting area and benefits have increased significantly year by year. However, there are many problems in the development process. One of the key solutions is to implement the high-quality seed project and promote high-quality varieties. However, at present, many cotton breeding work in Xinjiang still rely on manual sowing, manual work, etc. to carry out breeding Experiments (i.e. the original operation method of planning plots, marking, ditching, manual sowing or sowing with a simple on-demand device, and covering soil in the experimental field after site preparation), this form of manual sowing is not only labor-intensive and inefficient, but also due to its A large number of human factors exist, which will seriously affect the accuracy of breeding test results. The use of mechanized breeding methods can not only reduce test errors and improve the accuracy of field test results, but also shorten the test cycle and improve breeding work efficiency, thereby realizing the expansion of field breeding scale. However, breeding machinery usually has high technical content and strict manufacturing requirements. Most of the breeding machinery manufacturers come from foreign developed countries. Even if they can be introduced into our country, the situation of "acclimatization" often occurs due to the different agronomic requirements from our country. , especially for Xinjiang cotton community breeding work, the agronomic requirements are more special, and it is necessary to perform on-demand sowing operations on the mulch film, and can achieve precision sowing, generally 1 to 2 seeds per hole, which is very important for foreign community seeders and planters. Some seeders that have been developed in China cannot meet the actual needs.

In addition, the existing manual operation and the breeding operation with the help of a simple on-demand device are not only labor-intensive and inefficient, but also due to the existence of a large number of human factors, it is not known whether the duck mouth will be blocked when sowing, and when it will not be blocked. It is not known whether there is any missing seeding, and the accuracy is poor.

Utility model content

One purpose of this utility model is to develop a method that can realize the continuous opening of holes on the film and the accuracy of precision on the cotton breeding test plot in view of the current situation of high labor intensity, low efficiency and no special mechanical device in the cotton breeding test plot in Xinjiang. Sowing, sowing status monitoring, missed sowing reminder and alarm, missed sowing point identification and positioning, easy to clear the seeds after sowing and avoid the sowing duck mouth being blocked by soil, etc., so as to further improve the convenience and accuracy of cotton breeding and sowing experiments sex, reliability.

In order to achieve the above object, the utility model adopts the following technical solutions:

A precision seeder for cotton plot breeding, including a seed selection device, a monitoring and alarm device, a rolling hole seeding device, a marking positioning device, an upper frame and a lower frame, and the seed selection device is installed on the upper frame , the rolling hole-opening sowing device is installed on the lower frame, the identification positioning device is installed on the lower frame near the ground and the sowing duckbill of the rolling hole-opening sowing device, the The seed selection device and the rolling hole seeding device are connected and conducted through the seed delivery pipe, and the monitoring and alarm device is installed on the upper frame and detects the rotation of the rotation shaft of the seed selection device and passes through the For the cotton seeds in the seed delivery tube, the rolling hole-opening sowing device is driven and connected to the seeding rotating shaft of the seed selection and metering device through a transmission chain; the upper frame and the lower frame are relatively fixedly connected.

The above-mentioned precision seeder for cotton plot breeding, the described seed selection device includes a seed box frame, a seed storage box, an eyelet wheel and a seed row rotating shaft, the seed box frame is installed on the upper frame, and the seed storage The box is clamped and placed on the seed box frame; the outer cylindrical surface of the hole wheel is evenly distributed with a hole structure for only 1-2 cotton seeds to enter each time, and the seed row shaft is located in the seed box The bottom of the frame and the two ends of the seeding rotating shaft are installed on the upper frame through bearings, and the socket wheel is fixedly installed on the seeding rotating shaft through a key; the bottom of the seed storage box is provided with a The seed opening, the socket eye wheel is located directly below the seed outlet, and the gap arc surface fits between the socket eye wheel and the seed storage box; the cotton seeds in the seed storage box flow from the The seed outlet at the bottom of the seed storage box enters into the socket structure.

For the cotton plot breeding precision seeder described above, the seed selection device also includes a device installed between the seed storage box and the eye wheel, and can be placed in the seed storage box along the forward direction perpendicular to the seeder. A push-pull baffle that reciprocates in the gap between the pocket wheel and the eye wheel, the push-pull baffle has an arc-shaped structure, and an opening corresponding to the seed outlet is opened on the arc-shaped structure.

The above cotton plot breeding precision seeder, the seed selection device also includes an inoculation hopper, and two clamping and fixed connection parts extend downward from the bottom of the seed box frame, and the inoculation hopper is located between the two clamping parts. Between the fixed connection parts and fixedly connected with the two clamping fixed connection parts; with the advance direction of the cotton plot breeding precision seeder as the front, the inoculation bucket is located in front of the socket wheel and the The inoculation hopper receives all the cotton seeds that fly out or fall from the socket structure during the rotation of the socket wheel, the upper end of the inoculation hopper is sealed with the seed storage box, and the lower end of the inoculation hopper is connected with the The seed delivery tube is connected to conduction.

The above-mentioned precision seeder for cotton plot breeding, the monitoring and alarm device includes a programmable controller, a photoelectric sensor, a Hall sensor, a DC power supply and an alarm indicator light; the signal output terminal of the photoelectric sensor and the signal output terminal of the Hall sensor The signal output ends are respectively connected to the signal input ends of the programmable controller, the alarm signal output end of the programmable controller is connected to the input end of the alarm indicator light, and the current output end of the DC power supply is connected to the The current input terminal of the programmable controller is connected, and the DC power supply is a DC24V DC power supply; the programmable controller is a S7-200 type PLC; the photoelectric sensors are respectively installed and arranged at the lower end of the inoculation hopper At the connection with the seed delivery tube, there is a cotton seed channel between the transmitter and the receiver of the photoelectric sensor; the Hall sensor is installed at one end of the seed row shaft; the alarm The indicator light is placed behind the seed box frame; the identification positioning device includes a spraying device mounting frame, a push-pull electromagnet and a paint spray bottle, and the spraying device mounting frame is fixedly connected with the lower frame, and the push-pull electromagnet The paint spray bottle and the paint spray bottle are installed on the spray device mounting frame respectively; the push rod of the push-pull electromagnet is in contact with the press nozzle of the paint spray bottle, and the programmable controller is connected with the intermediate relay, and through the The intermediate relay is used to control the action of the push-pull electromagnet, and the power supply of the push-pull electromagnet is provided by the DC power supply.

In the aforementioned precision planter for cotton plot breeding, the rolling hole opening sowing device includes a rolling hole opening mechanism, a seeding drive mechanism, a seed supply mechanism and an auxiliary sowing mechanism;

The seed supply mechanism includes a fixed plate and a seed introduction tube, the fixed plate and the seed introduction tube are fixedly connected, and the fixed plate is provided with a seed discharge port leading to the cotton seed outlet end of the seed introduction tube. hole; the sowing driving mechanism includes a rotating shaft and a cam, and the cam is fixedly mounted on the rotating shaft; the rolling hole opening mechanism includes a moving disc, a belt disc, a wheel disc, a moving nozzle and a fixed nozzle, and the moving nozzle and The fixed nozzle constitutes the sowing duckbill, and the moving plate is installed on one end of the rotating shaft through a deep groove ball bearing; the auxiliary sowing mechanism includes a seed guide plate, a cylindrical spring, a retaining spring, a push rod and a roller;

The fixed disk is set in the wheel disk, and the fixed disk remains stationary when the wheel disk rotates around the rotating shaft; the wheel disk and the moving disk are fixedly connected, and the belt disk is located at Between the wheel disc and the moving disc, one end of the fixed nozzle is fixedly connected to the belt disc, and one end of the movable nozzle is flexibly connected to the belt disc; the seed guide disc is set on the belt and fixed together with the moving disk (3) and the belt disk. In the space, the cotton seed outlet end of the seed guide tube is in turn connected with the seed hole on the fixed plate and the cotton seed receiving chamber on the seed guide plate, and the cam is located on the seed guide plate In the hollow area, the first end of the ejector rod is located in the hollow area, the roller is mounted on the first end of the ejector rod through a pin shaft, and the second end of the ejector rod is along the guide The seed disk radially passes through the guide hole on the seed guide disk, the cotton seed accommodating cavity and the cotton seed sowing opening on the belt disk in turn, and abuts against the movable nozzle. The cam surface of the cam rolls to make the ejector rod reciprocate in the guide hole, the ejector rod is provided with a boss, the cylindrical spring is sleeved on the ejector rod, and the retaining spring is installed on the ejector rod. In the guide hole, the boss is located between the cylindrical spring and the circlip; the cotton seed sowing opening and the cotton seed accommodating chamber are connected to each other, and the cotton seed sowing opening and the push rod The second ends of both are located between the movable nozzle and the fixed nozzle, the cotton seed accommodating cavity and the cotton seed sowing opening are located on the same side of the push rod, and the fixed nozzle and the push rod There is a cotton seed channel between the second ends of the cotton seed channel, and the cotton seed channel is connected with the cotton seed sowing port.

In the cotton plot breeding precision seeder mentioned above, a hinge is installed on the belt reel, and the first page of the hinge is fixedly installed on the belt reel, the second page of the hinge and the belt reel. A truncated cone spring is fixedly installed between them, and one end of the truncated cone spring close to the second leaf plate passes through the second leaf plate and is fixedly connected with the moving nozzle; the big end of the truncated cone spring is fixedly installed on the On the belt reel, the small end of the truncated cone spring is fixedly connected with the second leaf plate and the movable nozzle in turn, and the movable nozzle is adjacent to the belt reel with the axis of the hinge as the axial direction The truncated cone spring compresses the truncated cone spring together with the second leaf when the direction of rotation is turned.

In the aforementioned precision planter for cotton plot breeding, the moving nozzle is composed of a moving nozzle head and a cotton seed blocking part, the angle between the moving nozzle head and the cotton seed blocking part is 90°, and the cotton seed blocking part The free end of the part abuts against the fixed nozzle, and the second end of the ejector rod is located in the space surrounded by the fixed nozzle and the free end of the cotton seed blocking part;

There is a rectangular opening on the free end of the head of the moving nozzle, and the cotton seed blocking part is a first channel steel with a first side wall, a second side wall and a first bottom wall; The second channel steel of the three side walls, the fourth side wall and the second bottom wall, the first end of the second channel steel is fixedly connected with the belt reel; the opening width of the first channel steel is larger than that of the first channel steel The profile width of the second channel steel;

On the second end of the second channel steel, the second bottom wall extends away from the free end of the hole in the direction away from the belt pan, and the third side wall and the fourth side wall are adjacent to each other. The free end of the hole gradually becomes shorter in the direction away from the free end of the hole; the first end opening of the second channel steel is connected to the cotton seeding opening, and the longitudinal opening of the second channel steel is For and closed by the plate surface of the first leaf plate, the first channel steel is fastened on the second end opening of the second channel steel and closes the second end opening of the second channel steel; The second end of the push rod is cuboid and its width is equal to the opening width of the second channel steel, and the second end of the push rod faces the side of the second bottom wall with a missing edge structure.

In the aforementioned precision seeder for cotton plot breeding, at the joint between the fixed nozzle and the belt reel, the included angle A between the tangent of the belt reel and the fixed nozzle is 60°.

In the cotton plot breeding precision seeder mentioned above, when the cotton seed blocking part is against the fixed nozzle, the included angle B between the cotton seed blocking part and the fixed nozzle is 40°.

In the aforementioned precision seeder for cotton plot breeding, the fixed plate and the wheel are relatively fixed by bolts.

In the cotton plot breeding precision seeder mentioned above, a locking nut is installed on the end of the rotating shaft adjacent to the moving disk.

In the aforementioned precision seeder for cotton plot breeding, a plastic seed protection liner is fixedly installed between the seed guiding disc and the belt disc.

In the aforementioned precision seeder for cotton plot breeding, the cam is connected and fixed to the rotating shaft through a key.

The above-mentioned precision seeder for cotton plot breeding, the seed guide disc, the plastic seed protection liner and the belt disc are fixedly connected by screws; the seed guide disc is composed of a relatively fixed seed guide disc body and a seed guide disc cover Composition, the seed guide plate cover is located between the fixed plate and the seed guide plate body, and an inclined cotton seed sliding channel is opened at the position of the seed guide plate cover corresponding to the cotton seed accommodating cavity, and the cotton seed Enter the seed cotton sliding passage from the seed introducing pipe and the seed discharge port on the fixed plate, and enter the cotton seed accommodating chamber along the seed cotton sliding passage under the action of gravity.

The beneficial effects of the utility model are as follows:

The utility model cotton district breeding precision seeder has greater significance compared with manual operation or simple on-demand device operation, and its specific performance is as follows: (1) It can realize continuous rolling on the film on the cotton district test field film. Hole, precision sowing operation (1-2 seeds per hole), high efficiency, consistent plant spacing, and good sowing depth; (2) Forced sowing can be achieved in each hole during sowing, avoiding the situation that the duck mouth is blocked, no need to worry If the sowing duckbill will be blocked by soil, it can improve the efficiency, accuracy and quality of cotton breeding in the plot; (3) It can realize the functions of sowing status monitoring, missed sowing reminder alarm, missed sowing point identification and location, easy to clear seeds after sowing, etc.; (4) The use of mechanical devices replaces manpower or simple seeding devices, which has low labor intensity and high efficiency, and also plays a certain role in promoting the mechanization of precision seeding devices in cotton plots; (5) solves the current problem of cotton breeding in Xinjiang There is no special device at the time, high labor intensity, low efficiency, and the existing on-demand device cannot solve the problem that the sowing duckbill will be blocked, which makes up for the equipment blank problem of the precision sowing device in the cotton plot.

Description of drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.

Fig. 1 is the structural representation of the rolling opening hole sowing device of the utility model cotton district breeding precision seeder;

Fig. 2 is the sectional structure schematic diagram of the rolling opening hole sowing device of the precision seeder for cotton plot breeding of the utility model;

Fig. 3 is the external structure schematic diagram of the rolling opening hole sowing device of the precision seeder for cotton plot breeding of the utility model;

Fig. 4 is the internal structure schematic diagram after the rolling hole opening seeding device of the utility model cotton plot breeding precision seeder shown in Fig. 3 is removed the fixing plate;

Fig. 5 is a schematic diagram of the external structure of another angle of the rolling hole-opening sowing device of the precision seeder for cotton plot breeding of the utility model;

Fig. 6 is the internal structure schematic diagram of removing the moving plate of the rolling hole opening seeding device of the utility model cotton plot breeding precision seeder;

Fig. 7 is the internal structure schematic diagram of removing the moving disk and the seed guiding disk body of the rolling hole opening seeding device of the cotton plot breeding precision seeder of the utility model;

Fig. 8 is a schematic structural diagram of the cooperation between the movable nozzle and the fixed nozzle of the rolling hole opening seeding device of the utility model cotton plot breeding precision seeder;

Fig. 9 is a structural schematic diagram of another direction in which the movable nozzle and the fixed nozzle of the rolling hole opening seeding device of the utility model cotton plot breeding precision seeder cooperate with each other.

In the figure: 1-fixing bolt; 2-lock nut; 3-moving disc; 4-fixing disc; 5-rotating shaft; Cavity; 73-seed guide plate cover; 731-cotton seed slide channel; 74-seed guide disc body; 8-roller; 9-circlip; 10-cylindrical spring; 11-ejector rod; Edge-missing structure; 12-moving nozzle; 121-moving nozzle head; 1211-rectangular opening; 122-cotton seed blocking part; 13-truncated cone spring; 14-hinge shaft; end; 16-belt disc; 161-cotton seed opening; 18-cam; 19-hinge; 20-cotton channel; 21-roulette; 22-deep groove ball bearing; 23-plastic liner for seed protection; 24 - Seed duckbill.

Fig. 10 is a schematic diagram of the overall structure of the utility model cotton plot breeding precision seeder;

Fig. 11 is a structural schematic diagram of the socket wheel of the utility model cotton district breeding precision seeder;

Fig. 12 is a structural schematic diagram of the push-pull baffle of the utility model cotton plot breeding precision seeder;

Fig. 13 is a schematic diagram of the overall structure of another direction of the precision seeder for cotton plot breeding of the utility model;

Fig. 14 is a schematic diagram of the overall structure of another direction of the precision seeder for cotton plot breeding of the utility model;

Fig. 15 is a schematic diagram of the structure of the precision planter for cotton plot breeding of the utility model without the rotating shaft and the socket wheel;

Fig. 16 is a schematic diagram of the structure of the precision seeder for cotton plot breeding of the utility model without the seed box frame and the seed storage box.

In the figure: 2-1-1-upper frame; 2-1-2-lower frame; 2-2-photoelectric sensor; 2-3-seeding shaft; 2-4-kind box frame; 2-5- Seed storage box; 2-6-drive chain; 2-7-Hall sensor; 2-8-DC power supply; 2-9-alarm indicator light; 2-91-red alarm indicator light; 2-92-green working status Indicator light; 2-93-yellow alarm indicator light; 2-10-inoculation bucket; 2-11-infusion tube; 2-12-socket wheel; Controller; 2-15-identification positioning device; 2-16-rolling hole seeding device; 2-18-socket structure; 2-19-clamping and fixing connection; 2-20-spraying device mounting frame; 21-push-pull electromagnet; 2-22-pigment spray bottle.

Detailed ways

In order to illustrate the utility model more clearly, the utility model will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present utility model.

As shown in Figure 10 to Figure 12, the precision seeder for cotton plot breeding includes a seed selection device, a monitoring and alarm device, a rolling hole seeding device, a marking positioning device, an upper frame 2-1-1 and a lower frame 2- 1-2, the seed selection device is installed on the upper frame 2-1-1, the rolling hole seeding device is installed on the lower frame 2-1-2, and the identification positioning device Installed on the lower frame 2-1-2 near the ground and the sowing duckbill 24 of the rolling hole-opening sowing device, the seed selection device and the rolling hole-opening sowing device pass through the seed delivery pipe 2-11 is connected and conducted, the monitoring and alarm device is installed on the upper frame 2-1-1 and detects the rotation of the seeding rotating shaft 2-3 of the seed selection device and the rotation of the seeding tube 2 -11 cotton seeds, the rolling hole-opening sowing device is driven and connected with the seeding rotating shaft 2-3 of the seed selection device through a transmission chain 2-6; the upper frame 2-1-1 and the lower frame The frame 2-1-2 is relatively fixedly connected.

The seed selection device includes a seed box frame 2-4, a seed storage box 2-5, a socket wheel 2-12 and a seed row shaft 2-3, and the seed box frame 2-4 is installed on the upper frame 2-1-1, the seed storage box 2-5 is clamped and placed on the seed box frame 2-4; the outer cylindrical surface of the socket wheel 2-12 is evenly distributed with only 1- The socket structure 2-18 where 2 cotton seeds enter, the seeding rotating shaft 2-3 is located under the seed box frame 2-4 and the two ends of the seeding rotating shaft 3 are installed on the upper machine through bearings On the frame 2-1-1, the socket eye wheel 2-12 is fixedly installed on the seed row shaft 2-3 through a key; the bottom of the seed storage box 2-5 is provided with a seed outlet, and the socket The eye wheel 2-12 is located directly below the seed outlet, and the gap between the eye wheel 2-12 and the seed storage box 2-5 fits; The cotton seeds enter the socket structure 2-18 from the seed outlet at the bottom of the seed storage box 2-5.

The seed selection and arrangement device is also installed between the seed storage box 2-5 and the eye wheel 2-12, and can be placed between the seed storage box 2-5 along the forward direction perpendicular to the seeder. A push-pull baffle 2-13 that reciprocates in the gap between the socket wheel 2-12, the push-pull baffle 2-13 has an arc-shaped structure, and the arc-shaped structure is provided with a The opening corresponding to the seed outlet. The seed selection device also includes an inoculation hopper 2-10, and two clamping and fixed connection parts 2-19 extend downward from the bottom of the seed box frame 2-4, and the inoculation hopper 2-10 is located at two places. Between the clamping and fixing connecting parts 2-19 and fixedly connecting with the two clamping and fixing connecting parts 2-19; with the advance direction of the cotton plot breeding precision seeder as the front, the inoculation bucket 2- 10 is located in front of the socket wheel 2-12 and the inoculation hopper 2-10 receives all the cotton seeds that fly out or fall from the socket structure 2-18 during the rotation of the socket wheel 2-12 The upper end of the inoculation hopper 2-10 is sealed and connected to the seed storage box 2-5, and the lower end of the inoculation hopper 2-10 is connected to the seed delivery pipe 2-11. Described monitoring alarm device comprises programmable logic controller 2-14, photoelectric sensor 2-2, Hall sensor 2-7, DC power supply 2-8 and warning indicator light 2-9; The signal of described photoelectric sensor 2-2 The output terminal and the signal output terminal of the Hall sensor 2-7 are respectively connected to the signal input terminal of the programmable controller 2-14, and the alarm signal output terminal of the programmable controller 2-14 is connected to the signal input terminal of the programmable controller 2-14. The input terminal of the alarm indicator light 2-9 is connected, the current output terminal of the DC power supply 2-8 is connected with the current input terminal of the programmable controller 2-14, and the DC power supply 2-8 is DC24V direct current Power supply; the programmable logic controller 2-14 is S7-200 type PLC; the photoelectric sensor 2-2 is installed and arranged at the connection guide between the lower end of the inoculation hopper 2-10 and the inoculation tube 2-11 Pass, between the transmitter and receiver of the photoelectric sensor 2-2 is a cotton channel; the Hall sensor 2-7 is installed at one end of the seeding rotating shaft 2-3; the alarm Indicator light 2-9 is placed on described kind of box frame 2-4 rear; Described mark positioning device comprises spraying device mounting frame 2-20, push-pull type electromagnet 2-21 and paint spraying bottle 2-22, and described spraying device The mounting frame 2-20 is fixedly connected with the lower frame 2-1-2, and the push-pull electromagnet 2-21 and the paint spray bottle 2-22 are respectively installed on the spraying device mounting frame 2-20 ; The push rod of the push-pull electromagnet 2-21 is in contact with the press nozzle of the paint spray bottle 2-22, and the programmable controller 2-14 is connected with the intermediate relay, and controls the described intermediate relay The action of the push-pull electromagnet 2-21, the power supply of the push-pull electromagnet 2-21 is provided by the DC power supply 2-8.

As shown in Figures 1 to 9, the rolling hole-opening sowing device includes a rolling hole-opening mechanism, a sowing drive mechanism, a seed supply mechanism and an auxiliary sowing mechanism;

The seed supply mechanism includes a fixed plate 4 and a seed introducing tube 6, the fixed plate 4 and the seed introducing tube 6 are fixedly connected, and the fixed plate 4 is provided with a cotton seed outlet connected to the seed introducing tube 6 The seeding hole that is connected at the end; the sowing drive mechanism includes a rotating shaft 5 and a cam 18, and the cam 18 is fixedly installed on the rotating shaft 5; the rolling hole opening mechanism includes a moving disc 3, a belt disc 16, a wheel 21. And twelve groups of moving nozzles 12 and fixed nozzles 15, the moving nozzles 12 and the fixed nozzles 15 form the sowing duckbill 24, and the moving plate 3 is installed on the rotating shaft 5 through a deep groove ball bearing 22 one end; the auxiliary seeding mechanism includes a seed guide disc 7, a cylindrical spring 10, a retaining ring 9, a push rod 11 and a roller 8;

The fixed plate 4 is set in the wheel 21, and the fixed plate 4 remains stationary when the wheel 21 rotates around the rotating shaft 5; the wheel 21 and the moving plate 3 are fixed connected, the belt reel 16 is located between the roulette 21 and the moving disk 3, one end of the fixed nozzle 15 is fixedly connected with the belt reel 16, and one end of the moving nozzle 12 is connected with the belt reel 16 is movably connected; the seed introducing disc 7 is sleeved in the belt disc 16 and relatively fixed together with the moving disc 3 and the belt disc 16, and the seed introducing disc 7 is located at the belt disc 16, the belt disc 16 and the belt disc 16. In the space surrounded by the fixed disk 4, the wheel disk 21 and the moving disk 3, the cotton seed outlet end of the seed guide tube 6 is sequentially connected with the seed hole on the fixed disk 4 and the The cotton seed accommodation chamber 72 on the seed guide disc 7 is connected, the cam 18 is located in the hollow area 71 of the seed guide disc 7, the first end of the push rod 11 is located in the hollow area 71, the The roller 8 is mounted on the first end of the push rod 11 through a pin shaft, and the second end of the push rod 11 passes through the guide holes on the seed guide disc 7 in sequence along the radial direction of the seed guide disc 7 , the cotton seed accommodating chamber 72 and the cotton seed sowing opening 161 on the belt reel 16 are abutted against the moving mouth 12, and the roller 8 rolls on the cam surface of the cam 18 so that the The ejector rod 11 reciprocates in the guide hole, the ejector rod 11 is provided with a boss 111, the cylindrical spring 10 is sleeved on the ejector rod 11, and the clamp spring 9 is installed in the guide hole , the boss 111 is located between the cylindrical spring 10 and the circlip 9; the cotton seed sowing opening 161 and the cotton seed accommodating cavity 72 are in communication with each other, and the cotton seed sowing opening 161 and the cotton seed sowing opening 161 are connected to each other. The second end of the push rod 11 is located between the movable nozzle 12 and the fixed nozzle 15, the cotton seed accommodating chamber 72 and the cotton seed sowing opening 161 are located on the same side of the push rod 11, and the There is a cotton seed passage 20 between the fixed nozzle 15 and the second end of the push rod 11 , and the cotton seed passage 20 is in communication with the cotton seed sowing opening 161 .

A hinge 19 is installed on the belt reel 16, the first leaf plate of the hinge 19 is fixedly installed between the belt reel 16, the second leaf plate of the hinge 19 and the belt reel 16 are fixed A truncated cone spring 13 is installed, and one end of the truncated cone spring 13 near the second leaf plate passes through the second leaf plate and is fixedly connected with the moving nozzle 12; the large end of the truncated cone spring 13 is fixedly installed On the belt reel 16, the small end of the truncated cone spring 13 is fixedly connected with the second leaf plate and the moving nozzle 12 in turn, and the moving nozzle 12 takes the axis of the hinge 19 as the axis The truncated cone spring 13 is compressed together with the second leaf plate when turning in a direction adjacent to the belt reel 16 .

Described moving chew 12 is made up of moving chew head 121 and cotton seed blocking portion 122, and the included angle of described moving chewing head 121 and described cotton seed blocking portion 122 is 90 °, and the free of described cotton seed blocking portion 122 end against the fixed nozzle 15, and the second end of the ejector rod 11 is located in the space surrounded by the fixed nozzle 15 and the free end of the cotton blocking part 122;

There is a rectangular opening 1211 on the free end of the moving nozzle head 121, and the cotton seed blocking portion 122 is a first channel steel with a first side wall, a second side wall and a first bottom wall; 15 is a second channel steel with a third side wall, a fourth side wall and a second bottom wall, the first end of the second channel steel is fixedly connected with the belt tray 16; the opening of the first channel steel The width is greater than the profile width of the second channel steel;

On the second end of the second channel steel, the second bottom wall extends a hole free end 151 in a direction away from the belt pan 16, and the third side wall and the fourth side wall From the free end 151 close to the opening of the hole gradually shortens to the direction away from the free end 151 of the opening; The longitudinal opening of the channel steel is directly facing the surface of the first leaf plate and is closed by it, and the first channel steel is buckled on the second end opening of the second channel steel and closes the second channel steel The second end of the push rod 11 is open; the second end of the push rod 11 is cuboid and its width is equal to the opening width of the second channel steel, and the second end of the push rod 11 faces the second One side of the bottom wall is a missing edge structure 112, which is beneficial for the cotton seeds to pass through the cotton seed channel 20 smoothly without being blocked here.

At the joint between the fixed nozzle 15 and the belt reel 16, the included angle A between the tangent line of the belt reel 16 and the fixed nozzle 15 is 60°. When the cotton seed blocking portion 122 abuts against the fixed nozzle 15 , the included angle B between the cotton seed blocking portion 122 and the fixed nozzle 15 is 40°.

The fixed plate 4 and the wheel plate 21 are relatively fixed by bolts 1 . A locking nut 2 is installed on the end of the rotating shaft 5 adjacent to the moving disk 3 . A plastic seed protection liner 23 is fixedly installed between the seed introducing disc 7 and the belt disc 16 . The cam 18 is fixed to the rotating shaft 5 through a key connection.

The seed introducing disc 7, the plastic seed protecting liner 23 and the belt disc 16 are fixedly connected by screws; the seed introducing disc 7 is composed of a relatively fixed seed introducing disc body 73 and a seed introducing disc cover 73. The seed introduction plate cover 73 is located between the fixed plate 4 and the seed introduction plate body 73, and an inclined cotton seed sliding channel 731 is opened at the position of the seed introduction plate cover 73 corresponding to the cotton seed accommodation chamber 72 , the cotton seeds enter the cotton seed sliding passage 731 from the seed introduction pipe 6 and the seed discharge port on the fixed plate 4, and enter the cotton seed sliding passage 731 along the cotton seed under the action of gravity. Accommodating cavity 72 .

As shown in Figure 2, when the rolling hole-opening sowing device starts to work, the tractor provides power so that the hole-opening sowing device advances along the X direction on the mulch, the moving disk 3, the seed guide disk 7, the Belt disc 16 and described wheel disc 21 roll together (shown in Fig. 2 and roll along rotating shaft 5 clockwise), and the parts installed on them also roll together; The rotating shaft 5 does not roll together. Because the moving disc 3 and the belt disc 16 can drive the seed guide disc 7 to rotate together when rolling forward, and then drive each push rod 11 in the seed guide disc 7 to rotate together, because the cam 18 does not move when rotating, so each push rod 11 rotates together. The roller 8 of the rod 11 will cooperate with the cam 18 in turn and move on the outer circular surface of the cam 18, thereby driving the push rod 11 to move together; The seed discharge port on the disc 4, the cotton seed sliding passage 731, the cotton seed accommodation cavity 72 on the described seed guide disc body 74, the cotton seed sowing port 161, and the cotton seed channel 20 enter into the The space enclosed by the end of the push rod 11 , the first bottom wall of the first channel steel and the second bottom wall of the second channel steel is just below the push rod 11 .

As shown in Figure 2, at first the opening free end 151 of a certain group of fixed nozzles 15 and the cotton seed blocking part 122 of the movable nozzle 12 contact the mulch film first, and the two puncture the mulch film together and penetrate into the soil to a certain depth. The continuation of rolling, this moment, the moving chewing head 121 top end (concave part) of described moving chewing 12 touches the mulch film on the ground, and moving chewing 12 is axis rotation with hinge shaft 14 (hinge shaft shown in Fig. 2 14 counterclockwise) and extrude the truncated cone spring 13, so that the cotton seed blocking part 122 moves a certain distance along the X direction, so that the opening free end 151 of the fixed nozzle 15 and the cotton seed blocking part 122 of the moving nozzle 12 are together A small hole is opened in the soil, and at the same time, the cotton seeds at the top of the push rod 11 slide down into the small hole by gravity, and the push rod 11 protrudes under the action of the cam 18, and cannot fall freely by gravity The cotton seeds are forcibly pushed into the small holes, so that the cotton seeds cannot be completely dropped into the small holes due to clogging and other reasons, which solves the problem of missing seeding due to the clogging of duckbills in the prior art, and realizes single hole Forced sowing, don't worry about the situation that the sowing duck mouth will be blocked by mud.

After the sowing work is completed, the ejector rod 11 will immediately reset to the normal state, and the movable nozzle 12 will also reset accordingly. So far, a complete sowing cycle consisting of hole opening, seed dropping, top seeding, and reset actions is completed, and subsequent actions are repeated in sequence. Just can realize the function of continuous rolling hole opening and single hole forced sowing. Owing to when cotton seed falls in the cavity in the soil by gravity, plus cam 18 promotes described push rod 11 and exerts a forced pushing effect to cotton seed, thereby there is no situation of missed sowing; and when sowing No clogging will occur, and the accuracy is good.

The rolling hole-opening seeding device in the utility model has greater significance compared with manual operation or simple on-demand device mode operation, and its specific performance is as follows: 1. The device can realize continuous rolling hole-opening and sowing operations, with high efficiency and high efficiency. Good consistency of plant distance and sowing depth; 2. Compulsory sowing in each hole can be realized during sowing, avoiding the situation that the sowing duck mouth is blocked, and the accuracy is high; 3. The use of mechanical devices replaces manpower or simple sowing devices, and the labor intensity is low , the efficiency is high, and it also plays a certain role in promoting the mechanization process of the precision seeding device in the cotton plot; 4, the plastic seed protection liner 23 can prevent the cotton seed from being damaged by direct frictional contact with the belt disc 16 made of metal.

When the precision seeder for cotton plot breeding of the utility model works, its advancing power is provided by a tractor. Carry out hole-opening operation on the drive shaft 16, and simultaneously drive the seeding shaft 3 on both sides to rotate through the sprocket on the driving shaft 16 and the transmission chain 2-6, and then drive the socket wheel 2-12 on it to rotate to realize the storage box The cotton seeds in 5 are selected, and then enter the seeding link as the rotation continues. The cotton seeds in the described seed storage box 2-5 are in contact with the outer cylindrical surface of the socket wheel 2-12 through the seed outlet provided at the bottom (at this moment, the opening on the push-pull baffle plate 2-13 is in contact with the The seed outlet provided at the bottom of the seed storage box 2-5 is facing, when no need to sow, adjusting the push-pull baffle 2-13 can make the push-pull baffle 2-13 close the described seed outlet), cotton The seeds sequentially pass through the socket structure 2-18 evenly distributed on the outer cylindrical surface of the socket wheel 2-12, the inoculation bucket 2-10 and the seed delivery tube 2-11 and fall into the rolling hole seeding device in the seed tube 12.

During the sowing process, the sowing state is monitored by the control system formed by the programmable controller 2-14. , the photoelectric sensor 2-2 detects whether the cotton seeds pass through the state of the area, so as to determine whether there is an abnormal problem of missed sowing, if there is no abnormal situation, then the normal sowing, if no seed is detected, the photoelectric sensor 2 -2 Send a signal to the programmable controller 2-14, and the programmable controller 2-14 controls the alarm indicator light 2-9 to send a yellow light alarm, and simultaneously controls the identification and positioning device to appear The position of missed seeding is carried out real-time positioning mark (by the push rod of described push-pull electromagnet 2-21, presses the press nozzle of described paint spray bottle 2-22, thereby can spray paint as mark at the missed seeding position), for manual inspection Or replant to provide convenience, and then continue to perform normal sowing; if the seeding rotating shaft 2-3 is stuck by cotton seeds or the ground wheel slides too much relative to the ground during the sowing process, the Hall sensor 2-7 sends a signal to the programmable controller 2-14, and the programmable controller 2-14 controls the alarm indicator light 2-9 to issue a red light warning, and then stop the operation immediately.

The utility model cotton district breeding precision seeder has greater significance compared with manual operation or simple on-demand device operation, and its specific performance is as follows: (1) It can realize continuous rolling on the film on the cotton district test field film. Hole, precision sowing operation (1-2 cotton seeds per hole), high efficiency, consistent plant spacing, and good sowing depth; (2) Forced sowing can be realized in each hole during sowing, avoiding the situation that the duck mouth is blocked. , don’t worry about the situation that the sowing duckbill will be blocked by the soil, and improve the efficiency, accuracy and quality of cotton breeding in the plot; (3) It can realize the monitoring of the sowing status, the reminder and alarm of the missed sowing, the identification and positioning of the missed sowing point, and easy to clear the seeds after sowing (4) The use of mechanical devices replaces manpower or simple sowing devices, which has low labor intensity and high efficiency, and also plays a certain role in promoting the mechanization of precision sowing devices in cotton plots; (5) solves the current problem in Xinjiang There is no special device for breeding in cotton plots, high labor intensity, low efficiency, and the existing on-demand device cannot solve the problem of clogging of the sowing duckbill, which makes up for the blank problem of precision seeding devices in cotton plots.

Obviously, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation of the present utility model. For those of ordinary skill in the art, on the basis of the above description It is also possible to make other changes or changes in different forms. All the implementation modes cannot be exhausted here. All obvious changes or changes that belong to the technical solutions of the present invention are still within the scope of protection of the present invention. .

Claims (10)

1. The precision seeder for cotton plot breeding is characterized in that it comprises a seed selection device, a monitoring and alarm device, a rolling hole seeding device, a marking positioning device, an upper frame (2-1-1) and a lower frame (2 -1-2), the seed selection device is installed on the upper frame (2-1-1), and the rolling hole seeding device is installed on the lower frame (2-1-2) The identification positioning device is installed on the lower frame (2-1-2) near the ground and the sowing duckbill (24) of the rolling hole-opening sowing device at the same time, and the seed selection device is connected with the The rolling hole seeding device is connected and conducted through the seed delivery pipe (2-11), and the monitoring and alarm device is installed on the upper frame (2-1-1) and detects the seeding of the seed selection device. The rotation of the rotating shaft (2-3) and the cotton seeds passing through the seed delivery pipe (2-11), the rolling hole sowing device and the seeding rotating shaft (2-3) of the seed selection device passing through the transmission chain (2-6) driving connection; the upper frame (2-1-1) and the lower frame (2-1-2) are relatively fixedly connected. 2. the precision seeder of cotton plot breeding according to claim 1, is characterized in that, described seed selection device comprises seed box frame (2-4), seed storage box (2-5), eyelet wheel ( 2-12) and the seeding shaft (2-3), the seed box frame (2-4) is installed on the upper frame (2-1-1), and the seed storage box (2-5) clamped and placed on the seed box frame (2-4); the seed row shaft (2-3) is located below the seed box frame (2-4) and the seed row shaft (2-3) The two ends of each are mounted on the upper frame (2-1-1) through bearings, and the eyelet wheel (2-12) is fixedly mounted on the seeding shaft (2-3) through a key; The outer cylindrical surface of the eyelet wheel (2-12) is evenly distributed with an eyelet structure (2-18) that only enters 1-2 cotton seeds at a time, and the bottom of the seed storage box (2-5) is provided with The seed outlet, the eyelet wheel (2-12) is located directly below the seed outlet, and there is a gap between the eyelet wheel (2-12) and the seed storage box (2-5) The arc surface fits; the cotton seeds in the seed storage box (2-5) enter the socket structure (2-18) from the seed outlet at the bottom of the seed storage box (2-5). 3. The precision seeder for cotton plot breeding according to claim 2, characterized in that, said seed selection and arrangement device also includes a device installed between said seed storage box (2-5) and said pocket wheel (2-5). 12), and a push-pull baffle that can reciprocate in the gap between the seed storage box (2-5) and the eye wheel (2-12) along the forward direction perpendicular to the seeder (2-13), the push-pull baffle (2-13) has an arc structure, and an opening corresponding to the seed outlet is opened on the arc structure. 4. the precision seeder for cotton plot breeding according to claim 3, is characterized in that, the described seed selection device also includes an inoculation bucket (2-10), and the bottom of the seed box frame (2-4) faces Two clamping and fixed connecting parts (2-19) extend downward, and the inoculation bucket (2-10) is located between the two clamping and fixed connecting parts (2-19) and is connected to the two clamping and fixed connecting parts (2-19). The fixed connection part (2-19) is fixedly connected; with the advancement direction of the cotton plot breeding precision seeder as the front, the inoculation bucket (2-10) is located in front of the socket wheel (2-12) and The inoculation hopper (2-10) receives all the cotton seeds that fly out or fall from the socket structure (2-18) during the rotation of the socket wheel (2-12), and the inoculation hopper (2-10) The upper end of -10) is sealed and connected with the seed storage box (2-5), and the lower end of the inoculation hopper (2-10) is connected and conducted with the seed delivery pipe (2-11). 5. the precision seeder of cotton district breeding according to claim 4, is characterized in that, described monitoring alarm device comprises programmable logic controller (2-14), photoelectric sensor (2-2), hall sensor ( 2-7), a DC power supply (2-8) and an alarm indicator light (2-9); the signal output terminal of the photoelectric sensor (2-2) and the signal output terminal of the Hall sensor (2-7) respectively connected with the signal input of the programmable controller (2-14), the alarm signal output of the programmable controller (2-14) and the input of the alarm indicator light (2-9) The current output terminal of the DC power supply (2-8) is connected to the current input terminal of the programmable controller (2-14), and the DC power supply (2-8) is a DC24V DC power supply; The programmable controller (2-14) is a S7-200 type PLC; the photoelectric sensor (2-2) is installed and arranged at the lower end of the inoculation hopper (2-10) and the inoculation tube (2-10) 11) at the connection conduction place, between the transmitter and receiver of the photoelectric sensor (2-2) is a cotton channel; the Hall sensor (2-7) is installed on the seeding shaft (2- 3) at the end of one end; the alarm indicator light (2-9) is placed behind the seed box frame (2-4); the identification positioning device includes a spraying device installation frame (2-20), An electromagnet (2-21) and a paint spray bottle (2-22), the spraying device installation frame (2-20) is fixedly connected to the lower frame (2-1-2), and the push-pull electromagnet (2-21) and the paint spray bottle (2-22) are installed on the spray device installation frame (2-20) respectively; the push rod of the push-pull electromagnet (2-21) and the paint spray bottle (2-22) the press mouth contacts, and described programmable logic controller (2-14) is connected with intermediate relay, and controls the action of described push-pull electromagnet (2-21) through described intermediate relay, so The power supply of the push-pull electromagnet (2-21) is provided by the DC power supply (2-8). 6. The precision seeder for cotton plot breeding according to claim 1, wherein said rolling hole-opening sowing device comprises a rolling hole-opening mechanism, a sowing drive mechanism, a seed supply mechanism and an auxiliary sowing mechanism; The seed supply mechanism includes a fixed plate (4) and a seed introducing tube (6), the fixed plate (4) and the described seed introducing tube (6) are fixedly connected, and the fixed plate (4) is provided with a The seeding hole that the cotton seed outlet end of the described seed guide pipe (6) conducts; the described sowing drive mechanism includes a rotating shaft (5) and a cam (18), and the cam (18) is fixedly mounted on the rotating shaft (5) ); the rolling hole opening mechanism includes a moving disc (3), a belt disc (16), a roulette (21), a moving nozzle (12) and a fixed nozzle (15), and the moving nozzle (12) and the The fixed nozzle (15) forms the sowing duckbill (24), and the moving disc (3) is installed on one end of the rotating shaft (5) through a deep groove ball bearing (22); the auxiliary sowing mechanism includes a seed guide disc (7), cylindrical spring (10), jump ring (9), push rod (11) and roller (8); The fixed plate (4) is sleeved in the roulette (21), and the fixed plate (4) remains motionless when the roulette (21) rotates around the rotating shaft (5); The wheel disc (21) is fixedly connected with the moving disc (3), the belt disc (16) is located between the wheel disc (21) and the moving disc (3), and the fixed nozzle (15) One end is fixedly connected with the belt tray (16), and one end of the moving nozzle (12) is flexibly connected with the belt tray (16); the seed introduction tray (7) is set in the belt tray (16) And it is relatively fixed with the moving disk (3) and the belt disk (16), and the seed introduction disk (7) is located at the belt disk (16), the fixed disk (4), the wheel In the space surrounded by the four moving discs (21) and the moving disc (3), the cotton seed outlet end of the seed introduction pipe (6) is in turn connected with the seed hole on the fixed disc (4) and the The cotton seed accommodation cavity (72) on the seed guide disc (7) is conducted, the cam (18) is located in the hollow area (71) of the seed guide disc (7), and the first pin of the push rod (11) One end is located in the hollow area (71), the roller (8) is installed on the first end of the push rod (11) through a pin shaft, and the second end of the push rod (11) is along the The seed guide disc (7) radially passes through the guide hole on the seed guide disc (7), the cotton seed accommodating chamber (72) and the cotton seed sowing opening (161) on the belt disc (16). ) and against the moving nozzle (12), the roller (8) rolls on the cam surface of the cam (18) so that the push rod (11) reciprocates in the guide hole, The push rod (11) is provided with a boss (111), the cylindrical spring (10) is sleeved on the push rod (11), the snap ring (9) is installed in the guide hole, and the The boss (111) is located between the cylindrical spring (10) and the clip spring (9); the cotton seed sowing opening (161) and the cotton seed accommodating chamber (72) communicate with each other, and the The cotton seed sowing port (161) and the second end of the push rod (11) are all located between the movable nozzle (12) and the fixed nozzle (15), and the cotton seed accommodating chamber (72) and the The cotton seed sowing port (161) is located on the same side of the push rod (11), and there is a cotton seed passage (20) between the fixed nozzle (15) and the second end of the push rod (11), The cotton seed channel (20) is in communication with the cotton seed sowing port (161). 7. The precision seeder for cotton plot breeding according to claim 6, wherein a hinge (19) is installed on the belt disc (16), and the first leaf plate of the hinge (19) is fixed A truncated cone spring (13) is fixedly installed between the belt pan (16), the second page of the hinge (19) and the belt pan (16), and the truncated cone spring (13) One end close to the second leaf plate passes through the second leaf plate and is fixedly connected with the moving nozzle (12); the big end of the truncated cone spring (13) is fixedly installed on the belt reel (16) , the small end of the truncated cone spring (13) is fixedly connected with the second leaf plate and the moving mouth (12) successively, and the moving mouth (12) is fixed with the axis of the hinge (19) The truncated cone spring (13) is compressed together with the second leaf when rotated axially adjacent to the belt reel (16). 8. The precision seeder for cotton plot breeding according to claim 7, characterized in that, the moving nozzle (12) is composed of a moving nozzle head (121) and a cotton seed blocking portion (122), and the moving nozzle The included angle between the head (121) and the cotton seed blocking portion (122) is 90°, the free end of the cotton seed blocking portion (122) abuts against the fixed nozzle (15), and the push rod The second end of (11) is located in the space surrounded by the free end of the fixed nozzle (15) and the cotton seed blocking part (122); There is a rectangular opening (1211) on the free end of the moving nozzle head (121), and the cotton seed blocking portion (122) is a first groove with a first side wall, a second side wall and a first bottom wall Steel; the fixed nozzle (15) is a second channel steel with a third side wall, a fourth side wall and a second bottom wall, and the first end of the second channel steel is fixed with the belt disc (16) connection; the opening width of the first channel steel and the width of the rectangular opening (1211) are both larger than the profile width of the second channel steel; On the second end of the second channel steel, the second bottom wall extends a hole free end (151) in a direction away from the belt pan (16), and the third side wall and the The fourth side wall is gradually shortened from the direction close to the free end of the opening (151) to the direction away from the free end of the opening (151); the first end opening of the second channel steel is connected with the cotton seed sowing opening (161) conduction, the longitudinal opening of the second channel steel is facing the plate surface of the first leaf plate and is closed by it, and the first channel steel is fastened to the second end of the second channel steel On the opening and close the second end opening of the second channel steel; the second end of the push rod (11) is cuboid and its width is equal to the opening width of the second channel steel, the push rod The side of the second end of (11) facing the second bottom wall is a rib-cut structure (112). 9. The precision seeder for cotton plot breeding according to claim 8, characterized in that, at the junction of the fixed mouth (15) and the belt disc (16), the tangent line of the belt disc (16) is connected to the belt disc (16). The angle A of the fixed nozzle (15) is 60 °; The angle B between (15) is 40°; the fixed plate (4) and the wheel plate (21) are relatively fixed by bolts (1); Lock nut (2) is installed on the end of (3); Plastic seed protection liner (23) is fixedly installed between described seed guide disc (7) and described belt disc (16); Described cam ( 18) It is connected and fixed with the rotating shaft (5) through a key. 10. The precision seeder for cotton plot breeding according to claim 9, characterized in that, the seed guide disc (7), the plastic seed protection liner (23) and the belt disc (16) are connected by screws fixedly connected; the seed introducing disc (7) is made up of a relatively fixed seed introducing disc body (74) and a seed introducing disc cover (73), and the seed introducing disc cover (73) is positioned at the fixed plate (4) and Between the seed introducing trays (74), an inclined cotton seed sliding channel (731) is opened at the position of the seed introducing tray cover (73) corresponding to the cotton seed accommodating cavity (72), and the cotton seeds fall from the The seed introduction pipe (6) and the seed opening on the fixed plate (4) enter the cotton seed sliding channel (731), and enter the cotton seed sliding channel (731) under the action of gravity. A kind of accommodating cavity (72).