CN112715098A

CN112715098A - Seeder cylinder and seeder

Info

Publication number: CN112715098A
Application number: CN202011586483.XA
Authority: CN
Inventors: 吴之旺
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-04-30

Abstract

The invention provides a seeder roller and a seeder. The seeder roller comprises a roller wall, a sealing disc, a rotating shaft, a fixed disc, a tongue spoon, a rotating disc, a driving structure and a locking structure, wherein the tongue spoon is driven to move by an arc surface on the rotating disc, so that the seeder roller is simple and stable in structure; it is a plurality of the rolling disc passes through the actuating lever is connected, stirs the actuating lever can once only adjust totally the tongue spoon, and it is high to adjust efficiency.

Description

Seeder cylinder and seeder

Technical Field

The invention relates to agricultural machinery, in particular to a roller of a seeding machine and the seeding machine containing the roller.

Background

The seeder is widely applied to modern agriculture. According to the degree of mechanization, the seeding machine is divided into a manual seeding machine and an automatic seeding machine. For example, patent publication No. CN107155467B discloses a seed sowing machine which belongs to a manual seed sowing machine and has an advantage in that the pitch of seeds when falling down and the number of seeds can be controlled. For another example, the invention patent application with publication number CN111919546A discloses an automatic seeder, which can automatically seed, and conveniently adjust the length of the spoon body and the central rod of the tongue spoon extending out of the roller wall; however, the adjusting mechanism comprises a plurality of components such as a rotating disc, a spiral protrusion, a push rod, a rotating arm, a fixed shaft, a first bevel gear, a second bevel gear, a rotating rod and the like, the structure is complex, the stability is poor, and only the tongue spoon on the same fixed disc can be adjusted each time.

Disclosure of Invention

In order to solve one or more of the problems mentioned in the background, the inventor improves on the background and provides a novel roller of a seeding machine and the seeding machine.

The invention provides a roller of a seeding machine, which comprises:

a drum wall;

the two sealing discs are respectively arranged at two ends of the drum wall and form a hollow cylinder with the drum wall;

the rotating shaft penetrates through the center of the sealing disc;

the fixed disks are arranged on the rotating shaft, and each fixed disk is provided with a plurality of sliding grooves;

the number of the tongue scoops is equal to that of the sliding grooves, inner tubes of the tongue scoops are connected with the fixed disc, and the spoon bodies and the central rods of the tongue scoops respectively penetrate through the wall of the roller; a sliding block and a roller are respectively arranged on an outer sleeve of each tongue spoon, and the sliding block is inserted into the sliding groove;

the number of the rotating discs is equal to that of the fixed discs, and the rotating discs are movably connected with the wall of the roller, so that the rotating discs can rotate; each rotating disc is provided with a plurality of cambered surfaces respectively, and the cambered surfaces are in contact with the rollers;

the driving structure is used for driving the rotating disc to rotate;

a locking structure for holding the rotating disc stationary relative to the drum wall.

Because the rotating disc is provided with the cambered surface, when the rotating disc rotates, the cambered surface can extrude the roller, so that the outer sleeve of the tongue spoon moves relative to the inner tube, and the spoon body and the central rod of the tongue spoon move along with the outer sleeve; when the rotating disc reversely rotates, the position of the outer sleeve of the tongue spoon is restored, and the positions of the spoon body and the center rod of the tongue spoon are restored along with the position of the center rod. Therefore, the effect of adjusting the length of the spoon body and the central rod extending out of the wall of the roller can be achieved only by driving the rotating disc to rotate.

Furthermore, a plurality of adjusting tooth grooves are formed in the edge of the rotating disc, adjusting holes are formed in the wall of the drum, and the adjusting tooth grooves and the adjusting holes form the driving structure; the locking structure is a screw or a brake block. When the rotating disc needs to be rotated, the adjusting tooth grooves are shifted from the adjusting holes, and then the rotating disc can be driven to rotate. When the rotating disc needs to be kept still, the rotating disc is fastened with the wall of the roller by the screw, or the brake block is inserted into the adjusting hole and the adjusting tooth slot.

Furthermore, the driving structure is a driving rod, and the driving rod is connected with the plurality of rotating discs; an avoidance hole and a screw hole are formed in the sealing disc, and one end of the driving rod penetrates out of the avoidance hole; the locking structure comprises a fastening piece and a fastening screw, wherein a limiting hole and a screw groove are formed in the fastening piece, the limiting hole is sleeved at one end of the driving rod, and the fastening screw is screwed into the screw hole from the screw groove and enables the fastening piece to keep static relative to the sealing disc. When the rotating discs need to be rotated, the fastening screws are loosened, and the driving rod is toggled, so that the rotating discs rotate together. When the rotating disc needs to be kept still, the fastening screw is screwed into the screw hole, so that the fastening piece is kept still relative to the sealing disc, and the driving rod is limited in the limiting hole and kept still.

Furthermore, the inner side of the drum wall is provided with mounting grooves with the number equal to that of the fixed discs, the plurality of rotating discs are arranged in the mounting grooves respectively, and the rotating discs can rotate in the mounting grooves.

Further, the roller is arranged on an outer sleeve of the tongue spoon through a roller bracket.

Furthermore, the fixed disk is four in number, and the number of the sliding grooves in each fixed disk is eight.

Furthermore, the number of the cambered surfaces on each rotating disc is eight.

The invention provides a seeding machine, which comprises a seeding machine roller.

The invention has the beneficial effects that: the tongue spoon is driven to move by the cambered surface on the rotating disc, so that the structure is simple and stable; it is a plurality of the rolling disc passes through the actuating lever is connected, stirs the actuating lever can once only adjust totally the tongue spoon, and it is high to adjust efficiency.

Drawings

Fig. 1 is a schematic structural view of a tongue spoon according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of a fixed disk according to an embodiment of the present invention.

Fig. 3 is a schematic view of the tongue scoop mounting of one embodiment of the present invention.

Fig. 4 is a schematic structural view of a rotating disk according to an embodiment of the present invention.

FIG. 5 is a schematic view of a rotating disk installation according to one embodiment of the present invention.

Fig. 6 is a partial cross-sectional view of a drum according to an embodiment of the present invention.

Fig. 7 is a schematic view of a rotary disk mounting according to another embodiment of the present invention.

FIG. 8 is a schematic structural diagram of a sealing plate according to another embodiment of the present invention.

Fig. 9 is a side view schematically showing the structure of the automatic sowing machine according to the embodiment of the present invention (laid out horizontally).

Fig. 10 is a schematic top view (in transverse cross section) of an automatic seed planter according to one embodiment of the present invention.

Fig. 11 is a schematic perspective view (horizontal) of a four-wheel bucket according to an embodiment of the present invention.

Fig. 12 is a front view of a four-wheel bucket according to an embodiment of the present invention (horizontal).

The reference signs explain: 100. a carrier vehicle 101, a frame 102, wheels 103, an engine 104, a transmission shaft 105, a steering handle 106, an oil tank 107, a seat 108 and a mudguard; 200. a transmission system, 201, a first chain, 202, a first gearbox, 203, a second chain, 204, a second gearbox, 205, a third chain, 206, a clutch operating lever; 300. the four-wheel bucket comprises a bucket body, a bucket body 3021, a fixed wall 3022, a movable wall 302303, an adjusting frame 304, a connecting rod 305, a first spring 306, a connecting rod 307, a second spring 308, a guide rod 309, a limiting ring 310, a fixed partition plate 311, a wheel mounting box 312, a cross rod 313, a first guide column 314, a first guide groove 315, a movable partition plate 316, a shaft 313, a bolt 317, a nut 318, a nut 319, a second guide column 320 and a second guide groove; 400. the rotary drum comprises a rotary disc 401, a rotary disc 4011, a central hole of the rotary disc 4012, an arc surface 4013, an adjusting tooth socket, a fixed disc 402, a weight reducing hole 4021, a central hole of the fixed disc 4023, a sliding groove 4024, a drum wall 403, an adjusting hole 4031, an installing groove 4032, an installing groove 404, a tongue spoon 4041, a spoon body 4042, an outer sleeve 4043, an inner tube 4044, a center rod 4046, a fixed plate 4047, a roller bracket 4048, a roller, a 4049 sliding block 405, a fixed seat 415, a sealing disc 4151, a screw hole 4152 and a relief hole; 500. a bearing; 600. a rotating shaft; 700. a drive rod; 800. fastener, 801 screw groove, 802 limit hole, 803 scale.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

Example 1

As shown in fig. 1 to 6, the seeder roller of the present embodiment includes a roller wall 403, a sealing plate 415, a rotating shaft 600, a fixed plate 402, a tongue scoop 404, a rotating plate 401, a driving structure, and a locking structure.

The drum wall 403 is cylindrical, and two seal discs 415 are respectively disposed at two ends of the drum wall 403 to form a hollow cylinder with the drum wall 403. The shaft 600 passes through the center of the cover plate 415. The number of fixed disks 402 may be plural, for example, three, four, five, six, seven, or eight, and the number of fixed disks 402 is four in the present embodiment. The fixed disk 402 is provided with a central hole 4023, the fixed disk 402 is fixedly connected (may be welded) with the rotating shaft 600 through the central hole 4023, and the edge of the fixed disk 402 is fixedly connected with the drum wall 403, so that the fixed disk 402 rotates along with the rotating shaft 600 when the rotating shaft 600 rotates. The fixed plate 402 is further provided with two lightening holes 4021 and eight sliding grooves 4024. The number of tongue scoops 404 is equal to the number of chutes 4024. The inner tube 4043 of the tongue scoop 404 is connected with the fixed disk 402 through the fixed seat 405, that is, the fixed seat 405 is fixedly connected with the fixed disk 402, and the inner tube 4043 is movably connected with the fixed seat 405. The length direction of the tongue spoon 404 is the same as that of the chute 4024, and the spoon body 4041 and the center rod 4044 of the tongue spoon 404 respectively penetrate through the drum wall 403. Each tongue scoop 404 has a sliding block 4049 and a roller 4048 on the outer casing 4042, wherein the sliding block 4049 is inserted into the corresponding sliding groove 4024, and the roller 4048 is fixed on the outer casing 4042 by a roller bracket 4047. When the roller 4048, the spoon 4041 or the central rod 4044 is pressed and moved, the outer sleeve 4042 moves along with the roller, and the sliding block 4049 slides in the sliding groove 4024, so that the outer sleeve 4042 is stabilized. The number of rotating disks 401 is equal to the number of fixed disks 402. The inner side of the drum wall 403 is provided with mounting grooves 4032 equal in number to the fixed disks 402, and the rotating disks 401 are respectively placed in the mounting grooves 4032, so that the rotating disks 401 can rotate in the mounting grooves 4032. Each rotating disc 401 is provided with a central hole 4011, and the rotating shaft 600 penetrates through the central hole 4011; the diameter of the rotating disc center hole 4011 is larger than that of the rotating shaft 600, and the rotating shaft 600 does not affect the rotating disc 401 when rotating. Eight cambered surfaces 4012 are further arranged on each rotating disc 401, and the distance between one end of each cambered surface 4012 and the edge of each rotating disc 401 is larger than the distance between the other end of each cambered surface 4012 and the edge of each rotating disc 401. The arc 4012 may be a side of a lightening hole of the rotary disk 401 (as shown in fig. 4), or may be a side of an arc member separately installed at a side of the rotary disk 401. The arcuate surface 4012 contacts the roller 4048 of the spatula 404, and the arcuate surface 4012 presses against the roller 4048 as the rotatable disk 401 rotates, thereby causing the outer sleeve 4042 to move therewith.

In this embodiment, a plurality of adjusting splines 4013 are disposed on the edge of the rotating disc 401, an adjusting hole 4031 is disposed on the drum wall 403, and the adjusting splines 4013 and the adjusting hole 4031 form a driving structure for driving the rotating disc 401. A tool (e.g., a screwdriver) is inserted through the adjustment hole 4031 to push the adjustment spline 4013, thereby enabling the rotation disc 401 to rotate. The denser the adjustment spline 4013, the higher the adjustment accuracy.

In this embodiment, the locking structure is a brake pad. One end of the brake shoe is shaped to fit into the adjustment spline 4013 and the other end of the brake shoe is shaped to fit into the adjustment hole 4031 so that the brake shoe can be inserted into the adjustment spline 4013 and the adjustment hole 4031 to restrict the rotation of the rotating disc 401.

Example 2

A seeder roller of the present embodiment is substantially the same as the seeder roller of embodiment 1, differing only in the driving structure and the locking structure. As shown in fig. 7 and 8, in the present embodiment, the driving structure is a driving lever 700, and the driving lever 700 is connected to four rotary discs 401. In order to make the structure more stable, the number of the driving levers 700 is four, and the four driving levers are connected to the four rotating disks 401. The seal plate 415 is provided with an avoiding hole 4152 and a screw hole 4151, and one end of the driving lever 700 penetrates through the avoiding hole 4152. The locking structure comprises a fastening piece 800 and a fastening screw, wherein the fastening piece 800 is provided with a limit hole 802 and a screw groove 801, the limit hole 802 is sleeved at one end of the driving rod 700, and the fastening screw is used for being screwed into the screw hole 4151 from the screw groove 801 and keeping the fastening piece 800 static relative to the sealing disc 415. The screw groove 801 is an arc shape having the rotation shaft 600 as a center, and the screw hole 4151 is always located within the range of the screw groove 801 when the fastener 800 is rotated. The side of the screw groove 801 can be provided with a scale 803, so that the adjustment is more accurate. The center of the fastening member 800 is provided with a relief hole for the rotation shaft 600 to pass therethrough, so that the fastening member 800 is not affected when the rotation shaft 600 rotates.

Example 3

As shown in fig. 9 to 12, the automatic seeder of the present embodiment includes:

the vehicle comprises a carrier 100, wherein the carrier 100 comprises a frame 101, an engine 103, a transmission shaft 104 and wheels 102;

the rotating shaft 600, the rotating shaft 600 is installed on the frame 101 of the carrier loader 100 through the bearing 500;

a drum 400, the drum 400 being mounted on the rotation shaft 600;

the four-wheel bucket 300 is connected with the roller 400 in a rolling way through four wheels 301 of the four-wheel bucket 300, and a connecting rod 306 of the four-wheel bucket 300 is movably connected with the frame 101 of the carrying vehicle 100;

the transmission system 200, the transmission system 200 is configured to take power from the transmission shaft 104 of the vehicle 100 and transmit the power to the rotating shaft 600 for driving the rotating shaft 600 to rotate.

The vehicle 100 is known in the art and typically includes a fuel tank 106 for supplying fuel to the engine 103, and a seat 107 for seating a person. An engine 103 of the vehicle 100 generates power and drives wheels 102 through a propeller shaft 104. The vehicle 100 may be a four-wheel vehicle or a three-wheel vehicle, and fig. 9 and 10 show an example in which the vehicle 100 is a three-wheel vehicle. The steering device of the vehicle 100 may be a steering handle 105 or a power steering wheel. A fender 108 may be positioned over the wheel 102 of the cart 100.

Referring to fig. 9 and 10, the transmission system 200 includes a first chain 201, a first gearbox 202, a second chain 203, a second gearbox 204, and a third chain 205, the first gearbox 202 is connected to the transmission shaft 104 of the carrier 100 through the first chain 201, the second gearbox 204 is connected to the first gearbox 202 through the second chain 203, and the rotation shaft 600 is connected to the second gearbox 204 through the third chain 205. The bottoms of the first gearbox 202 and the second gearbox 204 are fixedly connected with the frame 101 of the carrier vehicle 100, a first ring gear is arranged on the outer wall of a transmission shaft 104 of the carrier vehicle 100, one end of a first chain 201 is sleeved on the first ring gear, and the other end of the first chain 201 is sleeved on an input gear of the first gearbox 202. A single-speed flywheel can be mounted on the input shaft of the first gearbox 202, so that the carrier 100 does not drive the drum 400 to rotate when moving backward. One end of the second chain 203 is sleeved on the output gear of the first gearbox 202, and the other end of the second chain 203 is sleeved on the input gear of the second gearbox 204. A second ring gear is arranged on the outer wall of the rotating shaft 600, one end of the third chain 205 is sleeved on the output gear of the second gearbox 204, and the other end of the third chain 205 is sleeved on the second ring gear. The second gearbox 204 is provided with a clutch which cuts off the power supply to the third chain 205 when the clutch is disengaged. A clutch lever 206 is connected to the clutch, and the clutch lever 206 extends beside the seat 107 to control the clutch. Because the rotating speed of the transmission shaft 104 of the carrier loader 100 is high, the first gearbox 202 and the second gearbox 204 both adopt speed reduction gearboxes, so that the rotating speed of the final rotating shaft 600 is suitable for seeding.

The roller 400 may be a seeder roller in embodiment 1 or embodiment 2, and will not be described herein. The two rollers 400 are mounted on the frame 101 of the carrier 100 by bearings. The two rotating shafts 600 are connected to the second gearbox 204 through

third chains

205a and 205b, respectively.

Referring to fig. 11 and 12, the four-wheel bucket 300 includes wheels 301, a bucket body 302, a first spring 305, a link 304, an adjustment bracket 303, a connecting rod 306, a fixed partition 310, a movable partition 315, a guide rod 308, a limit ring 309, and a second spring 307; the two sides of the bucket body 302 are respectively a fixed wall 3021 and a movable wall 3022 hinged at the bottom, the two sides of the bottom of the bucket body 302 are respectively provided with a wheel 301, and each movable wall 3022 is respectively provided with a wheel 301; six connecting rods 304 are fixed at the rear part of the bucket body 302, a first spring 305 and an adjusting frame 303 are arranged on each connecting rod 304, each adjusting frame 303 is hinged with a connecting rod 306, and each connecting rod 306 is movably connected with the frame 101 of the carrier loader 100, so that the tightness degree of each first spring 305 and each second spring 307 can be conveniently adjusted; two fixed partition plates 310 are arranged in the bucket body 302, the internal space of the bucket body 302 is divided into three small spaces by the fixed partition plates 310, and a movable partition plate 315 is arranged in each small space. The movable partition 315 is used to adjust the seed flow rate to a suitable size, so that the seeding performance is stable and the duration is long. A guide rod 308 is arranged on the outer side of the movable wall 3022, a limiting ring 309 is arranged on the outer side of the fixed wall 3021, one end of the guide rod 308 is movably connected with the outer side of the movable wall 3022, and the other end of the guide rod 308 penetrates through the limiting ring 309 on the outer side of the fixed wall 3021, so that the guide rod 308 is limited to move in the limiting ring 309; the second spring 307 is fitted over the guide rod 308, and the initial state of the second spring 307 is in a compressed state. Wherein, the wheel 301 is arranged outside the movable wall 3022 through a wheel mounting groove 311, and the wheel mounting groove 311 is fixedly connected with the movable wall 3022. The fixed wall 3021 and the movable wall 3022 are hinged to each other through a shaft 316, the movable wall 3022 is provided with a first guide groove 314 (the first guide groove 314 is an arc-shaped groove with the shaft 316 as a center), the fixed wall 3021 is provided with a first guide post 313, and the first guide post 313 is inserted into the first guide groove 314. A cross bar 312 is arranged at the top in the bucket body 302, and a movable partition 315 is movably connected with the cross bar 312 through a bolt 317 and a nut 318 combination; a second guide groove 320 is formed in the movable partition 315, a second guide post 319 is arranged on the inner wall of the bucket body 302, and the second guide post 319 is inserted into the second guide groove 320; thus, the position of the movable partition 315 can be adjusted by adjusting the combination of the bolt 317 and the nut 318.

In order to improve sowing efficiency, the number of the drum 400 and the four wheel bucket 300 may be increased. Fig. 10 shows an example in which the number of the rollers 400 and the four wheel buckets 300 is two, and the

rollers

400a and 400b are respectively mounted on the frame 101 of the carrier 100 through bearings 500; the four-wheel bucket 300a is in rolling connection with the roller 400a through four wheels 301 of the four-wheel bucket, and a connecting rod 306 of the four-wheel bucket 300a is movably connected with the frame 101 of the carrying vehicle 100; the four-wheel bucket 300b is connected with the roller 400b in a rolling way through four wheels 301 of the four-wheel bucket, and the connecting rod 306 of the four-wheel bucket 300b is movably connected with the frame 101 of the carrying vehicle 100. The number of the third chains 205 and the number of the rotating shafts 600 are also two, and the two rotating shafts 600 and the second transmission case 204 are connected by the third chains 205a and the third chains 205b, respectively.

Of course, a funnel can be arranged below the roller 400, so that the seeds can fall to the ground more accurately. The tongue scoops 404 of the two fixed trays 402 may correspond to one hopper, that is, seeds scooped up by every sixteen tongue scoops 404 fall into the same hopper, so that the rotation speed of the drum 400 may be reduced and the sowing efficiency may be ensured. A collecting tray may be disposed below the four-wheel bucket 300, and the collecting tray is mainly used to facilitate collecting the remaining seeds in the four-wheel bucket 300 when the four-wheel bucket 300 is disassembled. In other embodiments, the four-wheel bucket can also be made into a single movable clapboard and work together with two fixed disks (corresponding to sixteen tongue scoops), so that the four-wheel bucket cannot be easily jacked open by the tongue scoops to leak seeds.

The working principle of the automatic seeder is as follows: a sowing mechanism (a roller, a four-wheel bucket and the like) is carried on the carrier loader 100, and power for driving the sowing mechanism is obtained from the carrier loader 100 by using the transmission system 200; after the engine 103 is started, the wheels 102 are driven to rotate through the transmission shaft 104, meanwhile, the transmission shaft 104 drives the first chain 201, and the first chain 201 drives the input gear of the first gearbox 202; after the first gearbox 202 decelerates, the output gear drives the second chain 203, and the second chain 203 drives the input gear of the second gearbox 204; after the second gearbox 204 decelerates, the output gear drives the rotating shaft 600, and the roller 400 rotates along with the rotating shaft 600; the spatula 404 scoops up the seeds from the four wheel buckets 300 and then pours the seeds to the ground, thereby sowing the seeds (the sowing principle is the same as that of the sowing machine of the invention patent with the publication number of CN107155467B, and the description thereof is omitted).

The above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also fall into the scope of the invention, and the scope of the invention should be defined by the claims.

Claims

1. A planter cylinder comprising:

a drum wall;

the rotating shaft penetrates through the center of the sealing disc;

the driving structure is used for driving the rotating disc to rotate;

2. The seeder drum of claim 1, wherein: a plurality of adjusting tooth grooves are formed in the edge of the rotating disc, adjusting holes are formed in the wall of the drum, and the adjusting tooth grooves and the adjusting holes form the driving structure; the locking structure is a screw or a brake block.

3. The seeder drum of claim 1, wherein: the driving structure is a driving rod, and the driving rod is connected with the plurality of rotating discs; an avoidance hole and a screw hole are formed in the sealing disc, and one end of the driving rod penetrates out of the avoidance hole; the locking structure comprises a fastening piece and a fastening screw, wherein a limiting hole and a screw groove are formed in the fastening piece, the limiting hole is sleeved at one end of the driving rod, and the fastening screw is screwed into the screw hole from the screw groove and enables the fastening piece to keep static relative to the sealing disc.

4. The seeder drum of claim 1, wherein: the inner side of the drum wall is provided with mounting grooves with the number equal to that of the fixed discs, the plurality of rotating discs are arranged in the mounting grooves respectively, and the rotating discs can rotate in the mounting grooves.

5. The seeder drum of claim 1, wherein: the roller is arranged on the outer sleeve of the tongue spoon through a roller bracket.

6. The seeder drum of claim 1, wherein: the fixed disk is four in number, and the number of the sliding grooves in each fixed disk is eight.

7. The seeder drum of claim 6, wherein: the number of the cambered surfaces on each rotating disc is eight.

8. A seeding machine, which is characterized in that: the seeding machine comprises the seeding machine roller of any one of claims 1 to 7.