CN203289867U - Small seed precision quantity sowing device - Google Patents

Abstract

The utility model relates to a precision seed metering device for small grain seeds, which comprises a seed storage box, a seed metering box, a seed scraper, a bracket, a seed scraper shell, a seed transfer ejector rod, a crankshaft, a first bevel gear, and a second bevel gear , a rotating shaft, and a connecting rod; the seed metering box is in the shape of a funnel, and the big mouth of the funnel is covered with an iron shell, and the center of the shell has a round hole that is as big as the small mouth of the funnel; the seed storage box is fixedly connected above the seed metering box; The seed injection ejector rod is connected with the crankshaft through the connecting rod, and runs through the small opening at the lower end of the seed metering box and the round hole of the iron shell; above the seed metering box, a rotatable seed scraper is arranged, and the seed scraper is wrapped in the seed scraper shell Here, the seed scraper is fixedly installed on the rotating shaft, the second bevel gear is installed at the end of the rotating shaft, and the first bevel gear is installed at one end of the crankshaft; the first bevel gear meshes with the second bevel gear. The utility model is novel in design, compact in structure, easy to operate, and improves seeding quality and work efficiency.

Description

Small seed seed metering device

technical field

The utility model relates to the field of agricultural machinery, in particular to a precision metering device for small grain seeds.

Background technique

Sowing is an important part of agricultural cultivation. The sowing methods, crop types, and varieties faced by sowing machines vary widely. This requires sowing machines to have strong adaptability and work performance that can meet different planting requirements. The seed meter can be described as the core part of the seeder, usually configured at the bottom of the seed box or in the side wall box. Seed metering device is required to have: stable and reliable seeding rate, uniform seeding; no damage to seeds; good versatility; wide range of seeding rate adjustment; convenient and reliable adjustment, no clogging. The existing external groove wheel type seed metering device has good versatility, but poor discharge accuracy and uniformity; the socket type seed metering device or friction seed metering device has high seed metering accuracy, but poor universality. Thereby research and develop a kind of versatility, the small grain seed precision metering device that sowing rate can control precisely seems particularly important.

Utility model content

The utility model overcomes the disadvantages of the above-mentioned technologies, and provides a precision seed metering device with simple structure, low cost and accurate seed picking, especially a precision seed metering device for small grain seeds.

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

A precision seed metering device for small grain seeds, comprising a seed storage box, a seed metering box, a seed scraper, a bracket, a seed scraper shell, a seed ejector rod, a crankshaft, a first bevel gear, a second bevel gear, a rotating shaft, a connecting Rod; the seed metering box is in the shape of a funnel, the big mouth of the funnel is covered with an iron shell, and the center of the shell is opened with a round hole that is as large as the small mouth of the funnel; the seed storage box is fixedly connected above the seed metering box; the seed delivery ejector rod It is connected with the crankshaft through the connecting rod, and runs through the small opening at the lower end of the seed box and the round hole of the iron shell; a rotatable seed scraper is arranged above the seed box, and the seed scraper is wrapped in the seed scraper shell. The device is fixedly installed on the rotating shaft, the end of the rotating shaft is equipped with a second bevel gear, and one end of the crankshaft is equipped with a first bevel gear; the first bevel gear meshes with the second bevel gear; the scraper shell is circular, and one end is open There is a seeding slot; the bracket supports the seeding box, and supports the crankshaft and the rotating shaft.

The top of the seed delivery push rod is provided with a small groove, and the end is provided with a cylindrical pin hole. The radius of the rod column of the seed transfer push rod is the same as that of the small opening of the seed box and the radius of the round hole of the iron shell.

One end of the seed scraper is provided with a semicircle slot, the radius of the semicircle of the slot is the same as the radius of the small opening of the seed box, and the slot is used for positioning the seeds. The bracket is used to limit the rotating shaft and the crankshaft to install a small bearing seat.

Compared with the prior art, the utility model has the following substantive features and progress:

The utility model is novel in design, compact in structure, and easy to operate. By adjusting the size of the groove at the top of the seed transfer ejector rod, it can realize the precise seeding of seeds of different sizes, has good versatility, and can be accurate to the accuracy of one seed. Fully meet the requirements of precision seeding, improve seeding quality and work efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural front view of the utility model.

Fig. 3 is the structure right view of the present utility model.

Fig. 4 is a top view of the structure of the utility model.

Fig. 5 is a schematic diagram of working condition 1 of the embodiment of the present invention.

Fig. 6 is a schematic diagram of working condition 2 of the embodiment of the present invention.

Fig. 7 is a partially enlarged view of the circled area in Fig. 6 .

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Embodiment one:

See Figure 1~Figure 4, 1. A precision seed metering device for small grain seeds, comprising a seed storage box 1, a seed metering box 2, a seed scraper 3, a bracket 4, a seed scraper shell 5, a seed transfer ejector rod 6, a crankshaft 7, a first bevel gear 8, The second bevel gear 9, the rotating shaft 10, the connecting rod 11; the seed metering box 2 is in the shape of a funnel, the big mouth of the funnel is covered with an iron shell, and the center of the shell has a circular hole as big as the small mouth of the funnel; the seed storage box 1 is solid Connected above the seed box 2; the seed delivery push rod 6 is connected with the crankshaft 7 through the connecting rod 11, and runs through the small opening at the lower end of the seed box 2 and the round hole of the iron shell; the top of the seed box 2 is provided with The seed scraper 3 that can rotate, the seed scraper 3 is wrapped in the seed scraper shell 5, the seed scraper 3 is fixedly installed on the rotating shaft 10, the second bevel gear 9 is installed on the end of the rotating shaft 10, and the second bevel gear 9 is installed on one end of the crankshaft 7. A bevel gear 8; the first bevel gear 8 meshes with the second bevel gear 9; the seed scraping shell 5 is circular, and one end has a seeding groove 14; the support 4 supports the seeding box 2, and supports With crankshaft 7 and rotating shaft 10.

Embodiment two:

This embodiment is basically the same as Embodiment 1, and the special feature is that: a small groove (13) is provided at the top of the seed transfer push rod 6, and a cylindrical pin hole is provided at the end, and the radius of the rod column of the seed transfer push rod 6 and the seed row The rim of box 2 and the circular hole radius of tin shell are identical. One end of the seed scraper 3 has a semicircular slot 12, the semicircle radius of the slot 12 is the same as the radius of the small opening of the seed box 2, and the slot 12 is used for positioning seeds. The support 4 is used to limit the rotating shaft 10 and the crankshaft 7 to install a small bearing seat.

As shown in FIGS. 5 to 7 , one end of the crankshaft 7 is connected to a power shaft, and the other end is installed with a first bevel gear 8 meshing with a second bevel gear 9 . Protruding shaft on crankshaft 7 links to each other with seed delivery push rod 6 by connecting rod 11. When the crankshaft 7 rotated, a part of the power was converted into the reciprocating motion of the seed delivery push rod 6, and a part of the power was converted into the rotation of the seed scraper 3.

As shown in Figure 5, working condition 1 is that the seeds in the seed box 2 are lifted up by the seed transfer jack 6 and sent to the seed scraper shell 5, at this time the slot 12 of the seed scraper 3 is just in the seed box 2 large round holes. Seed is in the closed space surrounded by seed scraper 3 slot 12 and seed scraper shell 5 .

As shown in Fig. 6 and Fig. 7, working condition 2 is that the seed scraper 3 is turned to the other end of the seed scraper housing 5, where a seed trough 14 is provided, from which the seeds can be discharged. At this time, the seed transfer push rod 6 moves to the bottom of the seed box 2, and the next seed slides into the small groove 13 at the top of the seed transfer push rod 6 due to gravity, and is about to be jacked up. the

Claims (4)

1. a fine grain seed precise seeder, comprise seed-storage box (1), seeds discharging box (2), seed scraping device (3), support (4), scrape kind of a shell (5), defeated kind of push rod (6), bent axle (7), the first bevel gear (8), the second bevel gear (9), rotating shaft (10), connecting rod (11); It is characterized in that: described seeds discharging box (2) is funnel shaped, and the large lid of funnel has iron sheet outer casing, and the shell center has the circular hole large with funnel osculum etc.; Described seed-storage box (1) connects firmly in seeds discharging box (2) top; Described defeated kind of push rod (6) is connected with bent axle (7) by connecting rod (11), and runs through the lower end osculum of seeds discharging box (2) and the circular hole of iron sheet outer casing; Described seeds discharging box (2) top is provided with the seed scraping device (3) that can rotate, seed scraping device (3) is wrapped in that to scrape kind of a shell (5) inner, seed scraping device (3) is fixedly mounted in rotating shaft (10), the end of rotating shaft (10) is equipped with the second bevel gear (9), and an end of bent axle (7) is equipped with the first bevel gear (8); The first bevel gear (8) and the second bevel gear (9) engagement; Described to scrape kind of a shell (5) rounded, and the one end has seed distributing groove (14); Described support (4) is supporting seeds discharging box (2), and is supporting bent axle (7) and rotating shaft (10).

2. fine grain seed precise seeder according to claim 1, it is characterized in that: little groove (13) is established on described defeated kind of push rod (6) top, end is provided with cylinder pin hole, and the osculum of the roofbolt radius of defeated kind of push rod (6) and seeds discharging box (2) and the circle hole radius of iron sheet outer casing are identical.

3. fine grain seed precise seeder according to claim 1, it is characterized in that: described seed scraping device (3) one ends have semicircle fluting (12), half radius of circle of fluting (12) is identical with the little port radius of seeds discharging box (2), and fluting (12) is used for locating seed.

4. fine grain seed precise seeder according to claim 1 is characterized in that: being used for spacing rotating shaft (10) and bent axle (7) on described support (4) locates to install small bearing bracket.

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