[0024] The following is a further description of the disc-type small-grain crop precision drilling device of the present invention in conjunction with specific examples, so that those skilled in the art can better understand and implement the present invention, but the examples cited are not intended to be a reference to the present invention. The limit.
[0025] A disc type small-grain crop precision drilling device, such as figure 1 As shown, the device includes a bracket 1, a support for fixing the engine 3, a front roller 4, a rear roller 5, a plurality of metering mechanisms 6, and a power supply for the front roller 4, the rear roller 5, and the metering mechanism 6. For the engine 3, the rear end of the support 1 is provided with a handrail 23, and the front end of the support 1 is provided with a horizontal lifting plate 11. The front roller 4 has the function of leveling the ground and suppressing, and the front roller 4 can be lifted by the horizontal lifting plate 11.
[0026] Among them, the front roller 4 and the rear roller 5 are arranged in parallel at the front and rear ends of the bracket 1, and the seed metering mechanism 6 is arranged in the middle of the bracket 1. The bracket 1 is also provided with a first axle 40 and a second axle arranged in parallel with each other. 60. The third axle 50, the front roller 4 and the rear roller 5 are respectively sleeved on the first axle 40 and the third axle 50, and the drive shaft of the engine 3 is sleeved with two sprockets, one of which passes through the chain The sprocket sleeved on the third axle 50 constitutes a closed-loop transmission, and the other sprocket respectively forms a closed-loop transmission with the sprocket sleeved on the first axle 40 and the sprocket sleeved on the second axle 60 through a chain.
[0027] Such as figure 2 As shown, each seeding mechanism 6 includes a sleeve 65, a seeding box 61 for holding seeds, and a seeding box cover 64 for supporting the seeding box 61. The lower end of the sleeve 65 is provided with an opener 7 and a soil cover 8. The upper end of the sleeve 65 is fixedly connected with the seeding box sleeve 64, and the seeding box sleeve 64 is provided with a sleeve opening 66 that penetrates the sleeve 65, and the bracket 1 is also provided with a fixed connecting rod 67 for connecting each sleeve 65; The seeding box 61 is sleeved on the second axle 60. The seeding box 61 is a circular structure formed by butting the first fan-shaped seeding disk 62 and the second fan-shaped seeding disk 63. The outer peripheral surface of the first fan-shaped seeding disk 62 is provided with lower seeds. 孔620. The box cover 64 has an arc structure adapted to the shape of the seeding box 61. Preferably, the two opposite sides of the box cover 64 are provided with upwardly extending rims, which can limit the position of the seeding box 61 on the one hand, and on the other hand, Prevent grains from falling into the floor room due to leakage into the box cover 64.
[0028] One of the armrests 23 is equipped with a throttle gear 27. The throttle gear 27 controls the speed of the entire device. Increase the throttle, the machine has sufficient power, walks fast, and planting efficiency is high; when you reach the ground, reduce the throttle to the lowest point and the machine stops. ; In order to avoid the existing planter in the process of turning the head of the field, the gear will keep the seeding box under the seed state, the present invention is also provided with a clutch, under the two armrests 23 is provided with a clutch gear 26 that controls the clutch, so that the front roller 4 and the rear drum 5 rotate, but the seeding box 61 does not rotate, and the seeds will not be randomly planted in the ground.
[0029] The seeding box 61 is formed by butting the first fan-shaped seeding disk 62 and the second fan-shaped seeding disk 63. Preferably, the two are connected in a concave-convex connection, that is, the two side surfaces of the second fan-shaped seeding disk 63 are convex. The two side surfaces of the seeding tray 62 are correspondingly provided with concave surfaces. After the two are connected, the butting part is detachably connected by screws 25. When seeding different crop seeds, the first fan-shaped seeding tray 62 can be removed and replaced with a different diameter. The seed hole 620 is lowered to realize precise seeding. Preferably, both the first fan-shaped seeding disk 62 and the second fan-shaped seeding disk 63 are made of transparent materials.
[0030] One side of the first fan-shaped seeding disk 62 and the second fan-shaped seeding disk 63 are sealed, and the other side of the first fan-shaped seeding disk 62 and the second fan-shaped seeding disk 63 is provided with a gap. figure 2 The number in the middle is 24, so that the first fan-shaped seeding tray 62 and the second fan-shaped seeding tray 63 are connected to each other, and the seed can be taken out and allowed to pass through. Preferably, the lower seed holes 620 are provided on the outer peripheral surface of the first fan-shaped seeding tray 62 close to the sealing surface thereof, and the diameter and number of the lower seed holes 620 are adjustable.
[0031] The engine 3 drives the seeding box 61 to rotate. When the first fan-shaped seeding disc 62 rotates to the bottom, the lower seed hole 620 faces the sleeve opening 66, and the seeds leak from the sleeve opening 66 and fall into the opener 7 through the sleeve 65. Then, the sealed side of the first fan-shaped seeding tray 62 pushes the seeds in the seeding box 61 upward and continues to rotate. The excess seeds will pass through the gap and fall into the second fan-shaped seeding tray 6; When the second fan-shaped seeding disk 6 is turned over the lowest surface and turned upward, the excess grains will fall back into the first fan-shaped seeding disk 62 from the notch. In this way, the seeds will be between the first fan-shaped seeding disk 62 and the second fan-shaped seeding disk 63. Rotate cyclically, so that the seeds can be kept turned over in the seeding box 61 at all times. While preventing them from blocking the seed hole 620, it can also ensure that the seeds can fall uniformly; the sleeve 65 is close to the opener 7 to ensure that the seeds fall The position into the soil is relatively accurate. Since the seeding box 61 can transmit light, it is convenient to adjust the seeds in the box 61 in real time during sowing.
[0032] The present invention can adjust the seeding depth: the two ends of the first axle 40 are connected with adjusting rods 12 sleeved in the horizontal lifting plate 11, and the adjusting rods 12 on the upper and lower sides of the horizontal lifting plate 11 are screwed with nuts. Except for the front roller 4, the entire device and the opener 7 will move up and down along with the length of the adjusting rod 12 extending from the horizontal lifting plate 11, which can adjust the planting depth of the device. In order to achieve the purpose of precise adjustment, a scale ruler is also provided on the adjustment rod 12 to adjust and calibrate the sowing depth.
[0033] The second embodiment for adjusting the seeding depth: the sleeve 65 and the fixed connecting rod 67 are fixed by screws. Since the fixed connecting rod 67 is fixed on the support 1, adjustment is achieved by adjusting the height of the sleeve 65 under the fixed connecting rod 67 The purpose of the height of the opener 7 is to adjust the seeding depth, or the opener post of the opener 7 is marked with a scale for adjusting the seeding depth. Preferably, the fixed connecting rod 67 and the second axle 60 are correspondingly provided with graduated scales, and the positions of each sleeve 65 and each seeding box 61 on the fixed connecting rod 67 and the second axle 60 are adjusted correspondingly, so as to realize the line spacing. Adjustment, wherein the spacing between the seeding boxes 61 is adjustable, and the spacing between the openers 7 is also adjustable. The number of gears and gear diameters of the sprocket set on the second axle 60 have been calculated and calibrated in advance, and the purpose of plant spacing adjustment can be achieved by replacing the sprocket with different specifications.
[0034] One of the means of the present invention to achieve the purpose of suppression is: the rear end of the support 1 is provided with a suppression mechanism at a position outside the rear roller 5, the suppression mechanism includes a fourth axle 13, a plurality of suppression wheels 14 sleeved on the fourth axle 13, Corresponding to the two rear connecting rods 15 provided on both sides of the rear end of the bracket 1 and the fixing plate 16 connected to the two rear connecting rods 15, there are also scrapers 17, scraping plates 17 between the two rear connecting rods 15 The bottom edge of the rear drum 5 is arranged tangentially to the outer circumferential surface of the rear drum 5 to ensure that the rear drum 5 does not stain soil and keep the drum surface clean and flat. Each suppressing wheel 14 is arranged corresponding to each seeding mechanism 6, and the suppressing wheel 14 and the opener 7 provided in the front must be kept in a straight line to ensure that it can press on the seeds and ensure the emergence of seedlings. The fixed plate 16 is provided with a spring mechanism for adjusting the ballast pressure of the ballast wheel 14. Such as image 3 As shown, the spring mechanism includes a connecting rod 18, a compression spring 19, a vertical rod 20, and a limiting plate 21. One end of the connecting rod 18 is fixedly connected to the fourth axle 13 and the other end is hinged on the fixed plate 16; One end of the straight rod 20 is fixed in the middle of the connecting rod 18, and the other end is inserted into the through hole provided on the limit plate 21 in a clearance fit. The compression spring 19 is sleeved in the vertical position between the connecting rod 18 and the limit plate 21. On the rod 20, because the connecting rod 18 is hinged on the fixed plate 16, the angle between the connecting rod 18 and the limit plate 21 is adjustable, so that the suppression wheel 14 can be cushioned when the surface is uneven, ensuring the suppression quality and suppressing There are no cracks on the rear surface; there are multiple spring mechanisms, and each spring mechanism is arranged corresponding to each pressing wheel 14;
[0035] The second method of the present invention to achieve the purpose of suppression is: a plurality of suppression strips 51 are sheathed on the rear drum 5, and each suppression strip 51 is arranged corresponding to each metering mechanism 6, the suppression strip 51 is detachable, and the suppression strip The width of 51 is the same as that of the opener 7; each pressing strip 51 can be made of rubber or hard plastic.
[0036] The method of the present invention to achieve the purpose of preventing skidding is as follows: both ends of the front roller 4 and the rear roller 5 are provided with annular flanges, and the outer peripheral surface of the front roller 4 is vertically connected with a plurality of iron resistance pieces 41; 41 are evenly spaced on the outer circumferential surface of the front drum 41, the connecting line between each resistance piece 41 and the outer circumferential surface of the front drum 4 is arranged parallel to the central axis of the front drum 4, and several resistance pieces 41 are on the same outer circumference with the same radius. The outer circumference of the drum 4 is provided with 4 to 6 outer circumferences. Preferably, the height of the annular flange is 3~5cm, and the height of the resistance piece 41 is 0.5cm lower than that of the annular flange, so that when the device is running on hard ground or roads, the front roller 4, the rear roller 5 and the resistance piece 41 do not directly contact the ground The height of the resistance piece 41 is 3~5cm, which increases the friction and ground force, and the friction resistance between the roller and the ground prevents the roller from slipping.
