CN108702900B - Rice hill-drop quantitative seed metering composite set - Google Patents

Abstract

The invention discloses a rice hole sowing quantitative seed sowing combined device, which comprises a seed sowing shaft, two side baffles, a blank filling wheel, an involute type seed sowing wheel and a transmission chain wheel, wherein the two side baffles, the blank filling wheel and the involute type seed sowing wheel are all arranged on the seed sowing shaft; the sum of the quantity of the involute type seed sowing wheel and the quantity of the blank filling wheels is 8, the involute type seed sowing wheel can be adjusted between 3 and 8, and the disassembled involute type seed sowing wheel is replaced by the blank filling wheels. The rice hole sowing and quantitative seed sowing combined device adopts the mode that the seed sowing holes are in an involute shape, hole sowing and seed sowing are realized through spacing teeth among the seed sowing holes, and simultaneously, rice seeds are charged and thrown; and the structure is simple, the device is suitable for the precise hole sowing of rice, and the working efficiency and the sowing precision can be obviously improved.

Description

Rice hill-drop quantitative seed metering composite set

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to a rice hole sowing quantitative seed discharging combined device for rice centralized sowing.

Background

The rice is an important grain crop in China, and the planting is still a weak link of the whole process mechanization of the rice. The mechanized planting of the rice comprises 2 modes of mechanical transplanting and direct mechanical seeding, the mechanical transplanting has the characteristics of strong tillering capability, complete agricultural technology and stable yield, and is a main mechanized planting mode of the rice in Japan, Korea and China; because of the shortage of rural high-quality labor force, the direct sowing planting mode which is labor-saving, labor-saving and cost-saving is rapidly developed in recent years, and becomes an important mode for mechanized planting of rice. The sowing quality of the machine direct seeding mainly depends on the seeding performance of the seeding apparatus.

At present, most of rice seeding apparatuses are single seeding apparatuses or seeding apparatuses mainly provided with outer grooved wheels, so that precise hole sowing of rice is difficult to realize. In order to improve the rice planting efficiency and the seeding precision, a rice seeding device with stable performance, precise seeding and high efficiency is urgently needed. The existing rice seeding device mainly has the problems of complex structure, poor seeding precision and low efficiency.

Disclosure of Invention

The invention aims to overcome the defects and provides a rice hole sowing quantitative seed metering combination device for rice centralized sowing.

The rice hole sowing quantitative seed sowing combined device comprises a seed sowing shaft, two side baffles, a blank filling wheel, an involute type seed sowing wheel and a transmission chain wheel, wherein the two side baffles, the blank filling wheel and the involute type seed sowing wheel are all arranged on the seed sowing shaft; two ends of the hexagonal shaft structure of the seed shaft are respectively provided with 1 two side baffle plates; a blank filling wheel and an involute type seed sowing wheel are arranged between the 2 side baffles, and the axial lengths of the blank filling wheel and the involute type seed sowing wheel are the same; the sum of the quantity of the involute type seed sowing wheel and the quantity of the blank filling wheels is 8, the involute type seed sowing wheel can be adjusted between 3 and 8, and the disassembled involute type seed sowing wheel is replaced by the blank filling wheels; one end of the seeding shaft is provided with a transmission chain wheel.

Furthermore, the involute type seed sowing wheel comprises a hexagonal hole, a shell, spacing teeth and seed sowing holes, wherein the center of the involute type seed sowing wheel is the hexagonal hole; the outer ring of the shell of the involute type seed sowing wheel is uniformly distributed with 10 spaced teeth and 10 seed sowing holes, and the seed sowing holes are separated by the spaced teeth; the seed-metering type hole comprises a left wall surface and a right wall surface, and the left wall surface is generated according to an involute; the right wall surface is generated from an involute.

Furthermore, the positions of the seed shaft provided with the baffles at two sides, the blank filling wheel and the involute type seed shaft are of a hexagonal shaft structure.

Further, the blank fill wheel is cylindrical, showing a smooth, non-seeded hole pattern.

Furthermore, the seed-metering hole of the involute type seed-metering wheel is in an involute shape, and the track of the involute is in an oblique arc involute shape, so that the rice seeds can be filled; the involute is larger than the involute radian, so that the rice seed throwing-out is facilitated.

The invention has the following beneficial effects:

1. the rice hole sowing and quantitative seed sowing combined device adopts the mode that the seed sowing holes are in an involute shape, and the seed sowing holes are separated by the spacing teeth to realize hole sowing and seed sowing, and simultaneously, rice seeds are charged and thrown.

2. The combination of the blank filling wheel and the involute type seed sowing wheel and the mode of adjusting the seed sowing amount by applying the rotating speed can adapt to the requirements of seeding amounts required by different line numbers, breadth and seed sowing amounts, and the adaptability of the device to different varieties and agricultural requirements is obviously improved.

3. The seed metering device has the advantages of wide seed metering adjusting range and simple structure, is suitable for the precise hole seeding of rice, and can obviously improve the working efficiency and the seeding precision.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view of the involute type seed wheel of the invention.

FIG. 3 is a front view of an involute type seed wheel of the present invention.

Detailed Description

The invention is further described with reference to the following figures and examples.

Example (b): the invention relates to a rice hole sowing quantitative seed sowing combined device, which comprises a seed sowing shaft 1, two side baffles 2, a blank filling wheel 3, an involute type seed sowing wheel 4 and a transmission chain wheel 5. The two side baffles 2, the blank filling wheel 3 and the involute type seed sowing wheel 4 are all arranged on the seed sowing shaft 1, and the seed sowing shaft 1 penetrates through the two side baffles 2, the blank filling wheel 3 and the involute type seed sowing wheel 4 to be combined into a whole. The seed shaft 1 is provided with two side baffles 2, a blank filling wheel 3 and an involute type seed wheel 4, and the positions of the two side baffles 2, the blank filling wheel 3 and the involute type seed wheel 4 are of a hexagonal shaft structure, so that the two side baffles 2, the blank filling wheel 3 and the involute type seed wheel 4 are radially positioned. Two ends of the hexagonal shaft structure of the seeding shaft 1 are respectively provided with 1 two side baffles 2, and the two side baffles 2 separate a blank filling wheel 3 or an involute type seeding wheel 4 from a seeding shell, so that friction damage is avoided. A blank filling wheel 3 and an involute type seed sowing wheel 4 are arranged in the middle of the 2 side baffles 2, and the blank filling wheel 3 and the involute type seed sowing wheel 4 have the same axial length and can be replaced mutually. The involute type seed sowing wheel 4 is a rice seed filling mechanism and is the most key part for determining the seed sowing performance; the involute type seed sowing wheel 4 forms hole-forming seed sowing, thereby forming intermittent hole-forming. The involute type seed sowing wheel 4 can be replaced by a blank filling wheel 3, and the blank filling wheel 3 is cylindrical, is smooth in surface, has no seed filling type hole, and has no functions of seed filling and seed sowing. Therefore, according to the agricultural requirements of seeding time, row number, breadth and the like, the requirement of the seeding quantity of the rice is met, the involute type seed sowing wheel 4 can be adjusted between 3 and 8, and the disassembled involute type seed sowing wheel 4 is replaced by the blank filling wheel 3. One end of the seeding shaft 1 is provided with a transmission chain wheel 5 for receiving power transmitted from the outside and driving the seeding shaft 1 to rotate, so that the involute type seeding wheel 4 rotates to perform hole-forming seeding.

The involute type seed sowing wheel 4 comprises a hexagonal hole 41, a shell 42, spacing teeth 43 and seed sowing holes 44, the hexagonal hole 41 is arranged at the center of the involute type seed sowing wheel 4, the hexagonal hole 41 penetrates through the seed sowing shaft 1, and the hexagonal hole 41 is matched with the seed sowing shaft 1 to realize radial positioning of the involute type seed sowing wheel 4. The outer ring of the shell 42 of the involute type seed sowing wheel 4 is uniformly distributed with 10 spacing teeth 43 and 10 seed sowing type holes 44, and the seed sowing type holes 44 are separated by the spacing teeth 43. The seed discharge type hole 44 is in an involute shape, the seed discharge type hole 44 comprises a left wall surface 45 and a right wall surface 47, and the left wall surface 45 is generated according to a first involute 46; the right wall 47 is generated from a second involute 48. The track of the first involute 46 is in the shape of an oblique arc involute, so that the rice seed filling is facilitated; the track line of the second involute curve 48 is larger than the radian of the first involute curve 46, so that the rice seed throwing is facilitated. The seed-metering hole 44 formed by the first involute 46 and the second involute 48 is in an involute shape, which is beneficial to seed filling and throwing and improves seed-metering performance.

Because the tillering capacity of the rice seeds is strong, the problem that the seedling rate is influenced by the environment is considered, 3-4 seeds are generally sown in each hole, 18-24 seeds are sown according to the sowing requirement of 6 rows, and the rice hole sowing quantitative seed sowing combined device finishes the seed sowing of multiple rows of seeds according to the holes; calculating the number of the involute type seed metering wheels 4 according to the seed metering line number and the seed number of each hole, if 6 rows are seeded, the number of the involute type seed metering wheels 4 is 4, and the number of the blank filling wheels 3 is 4; when 8 rows are sown and the seeding amount is required to be low, the number of the involute type seeding wheels 4 is 5, and the number of the blank filling wheels 3 is 3. The sum of the quantity of the involute type seed sowing wheel 4 and the blank filling wheel 3 is 8, the quantity of the involute type seed sowing wheel 4 and the blank filling wheel 3 can be synchronously adjusted, and the requirement of the rice seed sowing quantity is met.

The working principle of the invention is as follows: according to the mechanical physical characteristics, tillering characteristics and seeding quantity requirements of rice seeds, an involute type seeding wheel 4, a blank filling wheel 3 and a seeding shaft 1 are determined and installed. When the rice hole sowing quantitative seed discharging combined device works, the transmission chain wheel 5 receives external power to drive the seed discharging shaft 1 to rotate, the seed discharging shaft 1 drives the baffles 2 at two sides, the blank filling wheel 3 and the involute type seed discharging wheel 4 to rotate together, and seeds enter the seed discharging holes 44 of the involute type seed discharging wheel 4 which are beneficial to digging and taking the seeds under the combined action of gravity and disturbance in a seed charging area, so that the seed charging process is completed; the left wall surface 45 designed according to the first involute 46 is beneficial to filling rice seeds; the involute type seed sowing wheel 4 rotates to enter the seed feeding area, and the designed right wall surface 47 is beneficial to seed feeding and can not be blocked. In the seeding process, the surfaces of the baffle plates 2 at the two sides and the blank filling wheel 3 are smooth, and the phenomena of seed filling and seed throwing can not occur. The adopted involute type seed sowing wheel 4 leads the rice seeds to be in holes to discharge the quantity of the rice seeds with the required line number (6, 8, 10 lines and the like). After the seeds are thrown, the involute type seed sowing wheel 4 enters the seed filling area again and enters the cycle process of the next stage.

The work flow of the rice hole sowing quantitative seed metering combined device is as follows: an involute type seed discharging wheel 4, a blank filling wheel 3 and a seed discharging shaft 1 are arranged, seed adding, a transmission chain wheel 5 rotates, the seed discharging shaft 1 drives, the involute type seed discharging wheel 4 charges seeds, the involute type seed discharging wheel 4 carries the seeds, the involute type seed discharging wheel 4 feeds the seeds, the involute type seed discharging wheel 4 discharges the cavitation seeds, and a seed discharging cycle, the involute type seed discharging wheel 4 charges the seeds and the cycle seed discharging process are completed. The rice hole sowing quantitative seed metering combination device has the advantages that the fertilization amount adjusting mode and the implementation effect are obvious and innovative and obvious due to the fact that the left wall surface and the right wall surface of the rice hole sowing quantitative seed metering combination device are different in involute type hole structure, the blank filling wheel 3 and the involute type seed metering wheel 4 are combined.

The invention has the following specific implementation effects: the invention solves the problems of complex structure and low seeding precision of the existing single rice seeding device. The results of the seed metering performance of the present invention for different involute type seed metering wheels and rotational speeds are shown in table 1.

TABLE 1 seed metering Performance test results for different Rice varieties

Table 1 shows that the involute type seed sowing wheel and the rotating speed have good seed sowing quantity adjusting effect on seed sowing quantity, the requirements of different operation widths and seed sowing quantity can be met, the variation coefficient is lower than 0.8% when the rotating speed is 20-40 r/min, and the involute type seed sowing wheel has good seed sowing performance; meanwhile, the cavitation performance is also found to be good in the test.

The above embodiments are only for illustrating the technical solutions of the present invention and are not limited, and modifications or equivalent substitutions of the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention should be covered in the claims of the present invention.

Claims (3)

1. A quantitative seed metering combined device for rice hole sowing is characterized in that: comprising a seed metering shaft (1), a baffle plate (2) on both sides, a blank filling wheel (3), an involute type seed metering wheel (4) and The transmission sprocket (5), the side baffles (2), the blank filling wheel (3), and the involute type seed metering wheel (4) are all mounted on the seed metering shaft (1); the seed metering shaft (1) Two side baffles (2) are installed at both ends of the hexagonal shaft structure; a blank filling wheel (3) and an involute seed metering wheel are installed in the middle of the two side baffles (2). (4), the blank filling wheel (3) and the involute type seed metering wheel (4) have the same axial length; the number of the involute type seed metering wheel (4) and the blank filling wheel (3) is the same The sum is 8, the involute type seed metering wheel (4) can be adjusted between 3 and 8, and the disassembled involute type seed metering wheel (4) is replaced with a blank filling wheel (3); the seed metering shaft (1) ) is installed with a transmission sprocket (5) at one end; the baffles (2) on both sides separate the blank filling wheel (3) or the involute seed metering wheel (4) from the seed metering shell; Wherein, the involute type seed metering wheel (4) comprises a hexagonal hole (41), a housing (42), spacer teeth (43), and a seed metering type hole (44). The center of (4) is a hexagonal hole (41); the outer ring of the shell (42) of the involute seed metering wheel (4) is evenly distributed with 10 spacer teeth (43) and 10 seed metering holes (44), the seed metering holes (44) are separated by spacer teeth (43); the seed metering holes (44) include a left wall surface (45) and a right wall surface (47), the left wall surface (45) is generated according to the first involute (46); the right wall surface (47) is generated according to the second involute (48); The seed-metering hole (44) of the involute-type seed-metering wheel (4) is in the shape of an involute, and the trajectory of the first involute (46) is an involute in the shape of an inclined arc; The arc of the second involute (48) is larger than that of the first involute (46). 2. The rice hole-sowing quantitative seed-metering combined device according to claim 1, characterized in that a side baffle plate (2), a blank filling wheel (3) and an involute row are installed on the seed-metering shaft (1). The position of the seed wheel (4) is a hexagonal shaft structure. 3. The rice hole-sowing quantitative seed-metering combined device according to claim 1, characterized in that the blank filling wheel (3) is in the form of a cylinder, which is smooth and has no shaped holes for filling seeds.

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